WO2020124555A1 - Rock core holder and rock core test apparatus - Google Patents

Rock core holder and rock core test apparatus Download PDF

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Publication number
WO2020124555A1
WO2020124555A1 PCT/CN2018/122679 CN2018122679W WO2020124555A1 WO 2020124555 A1 WO2020124555 A1 WO 2020124555A1 CN 2018122679 W CN2018122679 W CN 2018122679W WO 2020124555 A1 WO2020124555 A1 WO 2020124555A1
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WO
WIPO (PCT)
Prior art keywords
core
probe
detection part
electrode
signal
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PCT/CN2018/122679
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French (fr)
Chinese (zh)
Inventor
张平松
李圣林
程桦
欧元超
刘畅
Original Assignee
安徽理工大学
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Application filed by 安徽理工大学 filed Critical 安徽理工大学
Priority to PCT/CN2018/122679 priority Critical patent/WO2020124555A1/en
Publication of WO2020124555A1 publication Critical patent/WO2020124555A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/04—Housings; Supporting members; Arrangements of terminals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant

Definitions

  • the invention relates to the technical field of rock mechanics, in particular to a core holder and core testing equipment.
  • the invention provides a core holder and core testing equipment, which is used for testing the parameters of the core.
  • the present invention provides a core holder, including:
  • a base with a groove, the groove is used to accommodate a rock core
  • a first detection part and a second detection part are provided on opposite side walls of the groove oppositely, wherein when the first detection part and the second detection part respectively contact the two end surfaces of the core , Can transmit a signal to one end of the core and receive a signal transmitted through the core at the other end; the first detection part can move in the propagation direction of the signal;
  • a distance measuring part provided on the base, the distance measuring part being arranged parallel to the propagation direction of the signal.
  • the base further includes a core bracket provided on the bottom surface of the groove, and the core bracket is used for placing the core.
  • the ends of the first detection part and the second detection part for contacting the surface of the core are tapered.
  • the core holder further includes: an elastic member
  • One end of the elastic member is disposed on one of the side walls, and the other end of the elastic member is connected to the first detection portion.
  • the elastic member is used to push the first detection portion so that the The first detection section is movable in the propagation direction of the signal.
  • the first detection part includes: a core push rod, a first electrode probe for transmitting/receiving current signals, and an excitation probe for transmitting ultrasonic signals/a receiving probe for receiving ultrasonic signals;
  • the other end of the elastic member is connected to one end of the core push rod;
  • the first end of the core push rod is provided with the first electrode probe and the excitation probe/reception probe;
  • the second detection part includes: a core mandrel, a second electrode probe for receiving/transmitting current signals, and a receiving probe for receiving ultrasonic signals/an excitation probe for transmitting ultrasonic signals;
  • One end of the core jack is provided on the other side wall;
  • the second end of the core rod is provided with the second electrode probe and the receiving probe/excitation probe.
  • the core push rod is hollow inside, or the core push rod is provided with a through hole; the core push rod is hollow inside, or the core push rod There are through holes inside.
  • the distance measuring component is provided on the bottom surface of the groove, or the top end of the core bracket includes a downwardly concave surface and a flat surface, and the downwardly concave surface is used to place the core ,
  • the distance measuring component is provided on the plane.
  • the present invention provides a core testing device, including: a test host and any core holder of the first aspect;
  • the test host is respectively connected to the first detection part and the second detection part of the core holder, and is used to test the core according to the signal, wherein when the first detection part and the second detection When the two parts contact the surfaces of both ends of the core, they can transmit the signal to one end of the core and receive the signal transmitted through the core at the other end.
  • test host includes: a voltage supply module, a voltage measurement module, a current measurement module, a first storage module, and a resistivity calculation module;
  • the positive and negative poles of the voltage supply module are connected to the first electrode probe in the first detection part and the second electrode probe in the second detection part, respectively, to the first electrode probe and the first Two electrode probes provide different voltages;
  • the voltage measurement module is respectively connected to two electrode components provided on the core, and is used to measure the voltage difference ⁇ U between the two electrode components, wherein the first electrode probe is connected to one electrode component The distance is equal to the distance from the second electrode probe to the other electrode part;
  • the current measurement module is used to measure the power supply current I between the first electrode probe and the second electrode probe;
  • the resistivity calculation module is configured to calculate the rock based on the voltage difference ⁇ U measured by the voltage measurement module, the power supply current I measured by the current measurement module, and formula 1 in the first storage module
  • test host includes: a pulse transmitter, a signal receiver, a conversion module, a second storage module, and a wave speed test module;
  • the pulse transmitter is connected to the excitation probe in the first detection part/second detection part, and the signal receiver is connected to the reception probe in the second detection part/first detection part;
  • the pulse transmitter is configured to send a high-voltage pulse to the excitation probe to excite the excitation probe to emit an ultrasonic signal through the high-voltage pulse;
  • the signal receiver is configured to receive the ultrasonic signal transmitted from the receiving probe
  • the conversion module is configured to perform analog-to-digital conversion processing on the ultrasonic signal received by the signal receiver to determine the time T when the first wave in the ultrasonic signal reaches the receiving probe;
  • the invention provides a core holder and a core testing device.
  • the core holder includes a base provided with a groove, and the groove is used for accommodating a core.
  • the second detection part and the movable first detection part are provided to utilize the movability of the first detection part, so that the first detection part and the second detection part are in close contact with the surface of both ends of the core When in contact, it can send a signal to one end of the core and receive the signal transmitted through the core at the other end of the core, so as to pass the signal transmission between the first detection part and the second detection part and the distance set on the base
  • the measuring component tests the parameters of the core.
  • FIG. 1 is a schematic structural diagram of a core holder provided by Embodiment 1 of the present invention.
  • FIG. 2 is a schematic structural diagram of a core holder provided by Embodiment 2 of the present invention.
  • FIG. 3 is a top view of a core holder provided in Embodiment 2 of the present invention.
  • FIG. 4 is a schematic structural diagram of a core testing device according to Embodiment 3 of the present invention.
  • FIG. 5 is a schematic structural diagram 1 of a core testing device according to Embodiment 4 of the present invention.
  • FIG. 6 is a second schematic structural diagram of a core testing device according to Embodiment 4 of the present invention.
  • FIG. 7 is a schematic structural diagram 1 of a core testing device according to Embodiment 5 of the present invention.
  • FIG. 8 is a second schematic structural diagram of a core testing device according to Embodiment 5 of the present invention.
  • FIG. 9 is a schematic diagram of an ultrasonic signal output by a conversion module in a core testing device according to Embodiment 5 of the present invention.
  • FIG. 1 is a schematic structural diagram of a core holder provided in Embodiment 1 of the present invention; referring to FIG. 1, it can be seen that this embodiment provides a core holder, which is used to align a core The parameters are tested.
  • the core holder includes:
  • a base 1 provided with a groove, which is used to accommodate a rock core
  • a first detection part 11 and a second detection part 12 are provided on opposite side walls of the groove opposite to each other, wherein the first detection part 11 and the second detection part 12 respectively contact the core When the surfaces at both ends can transmit signals to one end of the core and receive signals transmitted through the core at the other end; the first detection part 11 can move in the propagation direction of the signal;
  • a distance measuring part 10 provided on the base 1 is arranged parallel to the propagation direction of the signal.
  • the core holder provided in this application can be suitable for testing various parameters of the core.
  • various parameters include but are not limited to wave speed, resistivity, acoustic emission, etc., and for different parameters, the types of signals transmitted to the core may be different.
  • the parameter is wave speed
  • the above signal may be an ultrasonic signal
  • the parameter is resistivity
  • the above signal may be a current signal. Therefore, in one embodiment, the first detection part or the second detection part can only emit a single type of signal.
  • the structure of the first detection part or the second detection part is relatively simple, and in another implementation In the method, the first detection part or the second detection part can emit a variety of different types of signals through integration. This embodiment can realize the joint test of at least two parameters, which is convenient and fast, and saves costs.
  • the core holder in this solution supports cores of any shape, that is, there is no need to cut the core into a special regular shape, thereby shortening the overall test time and improving test efficiency and user experience.
  • the bottom surface of the groove can be used to place a core, or, to facilitate testing and aesthetics
  • the base further includes a core bracket provided on the bottom surface of the groove, the core bracket is used to place the core, wherein the core support
  • the material, quantity and shape of the rack can be set according to actual needs.
  • the top of the core bracket can be set as a downwardly hemispherical surface.
  • the surface is used to place the core, and the movability of the first detection part is used so that the first detection part and the second detection part respectively contact the surfaces of both ends of the core, so as to pass through the base, the first detection part and the second detection The part realizes the clamping of the core.
  • the first detection section can move in the signal propagation direction includes two cases, one of which is that the first detection section moves along the signal propagation direction, and the other is that A detection part moves in the opposite direction of the signal propagation direction, so that the movement of the two situations cooperates with the second detection part to achieve effective contact with the core.
  • the second detection part can be fixedly arranged on a side wall
  • the second detection part may be arranged to be movable in the propagation direction of the signal according to the arrangement similar to the first detection part.
  • the end surfaces of the first detection part and the second detection part for contacting the surface of the core are vertebral bodies, wherein
  • the shape of the body is not limited, and it may be a regular vertebral body or an irregular vertebral body, for example, it may be a cone, a regular triangular pyramid, an irregular triangular pyramid, a regular quadrangular pyramid, etc.
  • a distance measuring component with scales is also provided on the base, wherein the material of the distance measuring component is not limited, for example, it may be a plastic scale.
  • the distance measuring component may be provided on the bottom surface of the groove.
  • the scaled surface of the distance measuring component faces upward, as shown by reference numeral 10 in FIG. 3, or the core bracket
  • the top of the is provided with a downwardly concave surface and a flat surface, wherein the downwardly concave surface is used to place the core, and the distance measuring component is provided on the flat surface.
  • the first detection portion and the second detection portion can be controlled Send a signal to the core, and receive the signal transmitted through the core through the second detection part or the first detection part, and then based on the transmitted signal and the distance measurement component, the information required to calculate the relevant parameters can be collected, so that according to the collection The relevant parameters are calculated to complete the relevant parameter test.
  • the power supply current between the first detection part and the second detection part can be collected by a multimeter and other instruments and collected
  • the voltage difference between the two electrodes on the core, where the distance from one electrode to the end where the first detection part contacts the core is equal to the distance from the other electrode to the end where the second detection part contacts the core, then Based on the distance measurement component, the target distance between the end of the first detection part contacting the core and the end of the second detection part contacting the core is collected, so that the core holder based on this solution can collect the above Power supply current, voltage difference and target distance, and calculate the resistivity of the core, therefore, the test of resistivity is realized.
  • the core holder includes a base provided with a groove.
  • the groove is used to accommodate a core.
  • Opposite side walls of the groove are provided with opposing Two detection sections and a movable first detection section to utilize the mobility of the first detection section so that the first detection section and the second detection section are in close contact with the surfaces of both ends of the core, and when in close contact, the Sending a signal to one end of the core and receiving the signal transmitted through the core at the other end of the core, through the signal transmission between the first detection part and the second detection part and the distance measurement component provided on the base to the core
  • the parameters are provided.
  • FIG. 2 is Embodiment 2 of the present invention A schematic structural diagram of a core holder provided.
  • FIG. 3 is a top view of a core holder provided in Embodiment 2 of the present invention; referring to FIGS. 2 and 3, it can be seen that on the basis of Embodiment 1 ,
  • the core holder includes: a base with a groove 1, a core bracket 2 provided on the bottom of the groove, an elastic member 3, and a distance measuring member 10;
  • One end of the elastic member 3 is disposed on a side wall, and the other end of the elastic member 3 is connected to the first detection portion 11.
  • the elastic member 3 is used to push the first detection portion 11 so that the first detection portion 11 can Move in the direction of propagation;
  • the first detection part 11 includes: a core push rod 4, a first electrode probe for transmitting/receiving current signals, and an excitation probe for transmitting ultrasonic signals/receiving probe for receiving ultrasonic signals; elastic members The other end of 3 is connected to one end of the core push rod 4; the other end of the core push rod 4 is provided with a first electrode probe and an excitation probe/reception probe;
  • the second detection part 12 includes: a core jack 5, a second electrode probe for receiving/transmitting current signals, and a receiving probe for receiving ultrasonic signals/an excitation probe for transmitting ultrasonic signals; a core jack One end of 5 is provided on the other side wall; the other end of the core jack 5 is provided with a second electrode probe and a receiving probe/excitation probe.
  • both the first detection part and the second detection part integrate two different types of probes at the same time.
  • the probes 9 at A and B are integrated by different types of probes. In order to achieve rapid testing of two parameters such as wave speed and resistivity.
  • the forms of the integrated probes of the first detection section and the second detection section may include the following types: First, the first detection section integrates the first electrode probe and the excitation probe for transmitting current signals, and the second detection section integrates the A second electrode probe and a receiving probe that receive current signals; Second, the second detection section integrates a first electrode probe and a receiving probe for transmitting a current signal, and a second detection section integrates a second electrode probe and an excitation for receiving a current signal Probe; three, the first detection part is integrated with a first electrode probe and excitation probe for receiving current signals, the second detection part is integrated with a second electrode probe and receiving probe for transmitting current signals; fourth, the first detection part is integrated and useful The first electrode probe, the receiving probe, and the second detection part that receive the current signal integrate a second electrode probe and an excitation probe for transmitting the current signal.
  • the core bracket 2 is used to place the core 8 and the elastic member 3 is pushed against the core push rod 4 to provide horizontal thrust for the core push rod 4 to promote the core push rod 4 and the core push
  • the rods 5 cooperate with each other so that the probes 9 at both ends are in close contact with both ends of the core 8, and after close contact, the probe 9 at one end transmits a signal to one end of the core, and the probe 9 at the other end receives the signal transmitted through the core, To test the parameters of the clamped core.
  • the elastic member 3 includes but is not limited to a spring.
  • the first electrode probe and the excitation probe/reception probe integrated in the probe 9 at point A are respectively connected to different transmission lines, and the second electrode probe and the reception probe/excitation probe integrated in the probe 9 at point B are also different from the different The connection of the transmission line, then in order to increase the aesthetics and avoid the messy problem caused by the external installation of the transmission line, the inside of the core push rod 4 is hollow, or the inside of the core push rod 4 is provided with a through hole; The inside is hollow, or the core jack 5 is provided with a through hole, so that different transmission lines 6 can be deployed in the core push rod 4 and the core jack 5 respectively, and different transmission lines can be arranged One end of 6 is connected with the corresponding probe integrated in the probe 9.
  • the elastic member can be used to push the core push rod, so that the end of the core push rod and the end of the core jack The surfaces of the two ends of the core are in close contact; in addition, by setting the inside of the core push rod and the core jack to be hollow or through holes, it is convenient to deploy the transmission line inside and increase the aesthetics.
  • FIG. 4 is a schematic structural diagram of a core testing device according to Embodiment 3 of the present invention; referring to FIG. 4, it can be seen that this embodiment provides a core testing device.
  • the core testing device is used to automatically implement Parameter testing, specifically, the core testing equipment includes:
  • the test host 13 is respectively connected to the first detection part 11 and the second detection part 12 of the core holder 14 for testing the core according to the signal, wherein when the first detection part 11 and the second detection part 12 are respectively When touching the surfaces of both ends of the core, a signal can be transmitted to one end of the core and received at the other end through the core.
  • the test host may include a plurality of different test units, each test unit corresponds to a parameter test, and each test unit may control the first detection part or the second detection part to emit a corresponding one to one end of the core The signal is used to automatically test the parameters of the core through the transmitted signal.
  • the core testing device is composed of a test host and a core holder. Using the movability of the first detection section of the core holder, the first detection section and The second detection part is in close contact with both ends of the core, and when in close contact, it can transmit a signal to one end of the core and receive a signal transmitted through the core at the other end to pass between the first detection part and the second detection part The signals transmitted between them automatically test the parameters of the core, which improves the test efficiency.
  • FIG. 5 is a schematic structural diagram 1 of a core testing device according to Embodiment 4 of the present invention.
  • the test host 13 includes: a voltage supply module 15 and a voltage measurement module 16, Current measurement module 17, first storage module 18 and resistivity calculation module 19;
  • the positive and negative poles of the voltage supply module 15 are respectively connected to the first electrode probe in the first detection part 11 and the second electrode probe in the second detection part 12 to provide different voltages to the first electrode probe and the second electrode probe ;
  • the voltage measuring module 16 is respectively connected to the two electrode components provided on the core, and is used to measure the voltage difference ⁇ U between the two electrode components, wherein the distance from the first electrode probe to one electrode component is equal to the second electrode probe to the other The distance of an electrode part;
  • the current measurement module 17 is used to measure the power supply current I between the first electrode probe and the second electrode probe;
  • the positive electrode of the voltage supply module 15 is connected to the first electrode probe for transmitting current signals or the second electrode probe for transmitting current signals, and the negative electrode of the voltage providing module 15 is connected to the second electrode probe for receiving current signals or A first electrode probe connection for receiving current signals.
  • the electrode part may be an electrode clip, an electrode sheet, or the like.
  • FIG. 6 is a schematic structural diagram 2 of a core testing device provided in Embodiment 4 of the present invention.
  • a symmetric four-pole method is used to implement resistivity testing.
  • the positions of the two electrode components (refer to the two electrode components 7 in FIG. 2) can be adjusted according to the distance measuring component 10 provided on the base 1 so that the distance between the electrodes AM is equal to the distance between BN.
  • the power supply used by the voltage supply module 15 is a voltmeter used by the voltage measurement module
  • the current measurement module 17 can be an ammeter (not shown in the figure) and can be provided between the power supply and the core 8. Link.
  • the first electrode probe integrated in the probe 9 at point A transmits a current signal to one end of the core
  • the second electrode probe integrated in the probe 9 at point B receives the current signal transmitted through the core
  • the first electrode probe and the second electrode probe are used to automatically load the measured core with a continuous current
  • the voltage difference module ⁇ U and the power supply current I are collected by the voltage supply module 15 and the current measurement module 17 respectively to pass the resistance
  • the rate calculation module 19 calculates the resistivity of the measured core based on the collected voltage difference ⁇ U and the supply current I.
  • a symmetrical four-pole method is used, and the first and second electrode probes are used to apply a continuous current to the core to be measured, based on the collected power supply current between the first and second electrode probes.
  • the voltage difference between the two electrode components provided on the core realizes the test of the resistivity of the core, and the circuit is simple, and some conventional components are adopted, which can effectively save costs.
  • test host 13 includes: a pulse transmitter 20, a signal receiver 21, a conversion module 22, and a second storage module 23 and wave speed test module 24;
  • the pulse transmitter 20 is connected to the excitation probe in the first detection section 11/second detection section 12, and the signal receiver 21 is connected to the reception probe in the second detection section 11/first detection section 12;
  • the pulse transmitter 20 is used to send a high-voltage pulse to the excitation probe to excite the excitation probe to emit an ultrasonic signal through the high-voltage pulse;
  • the signal receiver 21 is used to receive the ultrasonic signal transmitted from the receiving probe;
  • the conversion module 22 is used to perform analog-to-digital conversion processing on the ultrasonic signal received by the signal receiver 21 to determine the time T when the first wave in the ultrasonic signal reaches the receiving probe;
  • FIG. 8 is a schematic structural diagram 2 of a core testing device according to Embodiment 5 of the present invention.
  • 9 is a schematic diagram of an ultrasonic signal output by a conversion module in a core testing device according to Embodiment 5 of the present invention.
  • the ultrasonic signal is transmitted to the conversion module 22 through the transmission line 6 .
  • the conversion module 22 performs analog-to-digital conversion on the received ultrasonic signal, and after the analog-to-digital conversion, the ultrasonic signal can be presented in the form of a graph in FIG. 9, where the vertical coordinate of the graph is amplitude and the horizontal coordinate is time, from In the graph, the time when the first wave of the ultrasonic signal reaches the receiving probe can be determined, so that the wave speed can be calculated by the wave speed test module 24 or manually.
  • This embodiment realizes the test of the wave speed by exciting the probe and receiving the probe, and has a simple structure and is easy to implement.
  • This solution realizes the joint test of the resistivity and wave speed of the rock core, improves the work efficiency, and can meet the needs of modern society to solve the problems of geological disasters and rock engineering safety. .

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Abstract

Disclosed are a rock core holder and a rock core test apparatus. The rock core holder comprises: a base (1) provided with a groove used for accommodating a rock core; a first detection portion (11) and a second detection portion (12), which are arranged opposite each other on two opposite side walls of the groove, wherein when respectively in contact with surfaces of two ends of the rock core, the first detection portion (11) and the second detection portion (12) can transmit a signal to one end of the rock core and receive, at the other end, the signal, which is transferred through the rock core, and the first detection portion (11) can move in a signal propagation direction; and a distance measurement part (10) arranged on the base (1), the distance measurement part (10) being arranged parallel to the signal propagation direction. The rock core holder and the rock core test apparatus are used for testing parameters of the rock core.

Description

岩芯夹持器和岩芯测试设备Core holder and core testing equipment 技术领域Technical field
本发明涉及岩石力学技术领域，尤其涉及一种岩芯夹持器和岩芯测试设备。The invention relates to the technical field of rock mechanics, in particular to a core holder and core testing equipment.
背景技术Background technique
随着西部大开发战略的实施和资源开采向深部发展，岩体工程将越来越多，其中，一切依托于岩石或岩体进行的工程活动都属于岩体工程范畴。With the implementation of the Western Development Strategy and the deeper development of resource exploitation, there will be more and more rock mass projects. Among them, all engineering activities that rely on rocks or rock masses fall into the category of rock mass engineering.
而岩石的物理力学参数，例如波速、电阻率等等，则是设计一切岩体工程的重要依据，是评价岩体工程安全性的重要指标。因此，为保障岩体工程的安全性等，亟需对从岩体工程中取得的岩芯的参数进行测试。The physical and mechanical parameters of rock, such as wave speed, resistivity, etc., are an important basis for designing all rock mass engineering and an important index for evaluating the safety of rock mass engineering. Therefore, in order to ensure the safety of rock mass engineering, it is urgent to test the parameters of the core obtained from rock mass engineering.
发明内容Summary of the invention
本发明提供一种岩芯夹持器和岩芯测试设备，用于对岩芯的参数进行测试。The invention provides a core holder and core testing equipment, which is used for testing the parameters of the core.
第一方面，本发明提供一种岩芯夹持器，包括：In a first aspect, the present invention provides a core holder, including:
设有凹槽的底座，所述凹槽用于容置岩芯；A base with a groove, the groove is used to accommodate a rock core;
所述凹槽的相对两侧壁上对向设置有第一探测部和第二探测部，其中，所述第一探测部和所述第二探测部分别接触所述岩芯的两端表面时，可向所述岩芯的一端发射信号并在另一端接收通过所述岩芯传输的信号；所述第一探测部可在所述信号的传播方向上移动；A first detection part and a second detection part are provided on opposite side walls of the groove oppositely, wherein when the first detection part and the second detection part respectively contact the two end surfaces of the core , Can transmit a signal to one end of the core and receive a signal transmitted through the core at the other end; the first detection part can move in the propagation direction of the signal;
设置在所述底座上的距离测量部件，所述距离测量部件与所述信号的传播方向平行设置。A distance measuring part provided on the base, the distance measuring part being arranged parallel to the propagation direction of the signal.
进一步地，所述底座还包括设置在所述凹槽底面上的岩芯托架，所述岩芯托架用于放置所述岩芯。Further, the base further includes a core bracket provided on the bottom surface of the groove, and the core bracket is used for placing the core.
进一步地，所述第一探测部和所述第二探测部的用于接触所述岩芯表面的端部呈锥体。Further, the ends of the first detection part and the second detection part for contacting the surface of the core are tapered.
进一步地，所述岩芯夹持器，还包括：弹性件；Further, the core holder further includes: an elastic member;
所述弹性件的一端设置在一个所述侧壁上，所述弹性件的另一端与所述第一探测部连接，所述弹性件用于抵推所述第一探测部，以使所述第一探测部可在所述信号的传播方向移动。One end of the elastic member is disposed on one of the side walls, and the other end of the elastic member is connected to the first detection portion. The elastic member is used to push the first detection portion so that the The first detection section is movable in the propagation direction of the signal.
进一步地，所述第一探测部，包括：岩芯推杆、用于发射/接收电流信号的第一电极探头、以及用于发射超声波信号的激发探头/用于接收超声波信号的接收探头；Further, the first detection part includes: a core push rod, a first electrode probe for transmitting/receiving current signals, and an excitation probe for transmitting ultrasonic signals/a receiving probe for receiving ultrasonic signals;
所述弹性件的另一端与所述岩芯推杆的一端连接；The other end of the elastic member is connected to one end of the core push rod;
所述岩芯推杆的另一端设置有所述第一电极探头和所述激发探头/接收探头；The first end of the core push rod is provided with the first electrode probe and the excitation probe/reception probe;
所述第二探测部，包括：岩芯顶杆、用于接收/发射电流信号的第二电极探头、以及用于接收超声波信号的接收探头/用于发射超声波信号的激发探头；The second detection part includes: a core mandrel, a second electrode probe for receiving/transmitting current signals, and a receiving probe for receiving ultrasonic signals/an excitation probe for transmitting ultrasonic signals;
所述岩芯顶杆的一端设置在另一个所述侧壁上；One end of the core jack is provided on the other side wall;
所述岩芯顶杆的另一端设置有所述第二电极探头和所述接收探头/激发探头。The second end of the core rod is provided with the second electrode probe and the receiving probe/excitation probe.
进一步地，所述岩芯推杆的内部呈空心状，或者，所述岩芯推杆的内部设置有通孔；所述岩芯顶杆的内部呈空心状，或者，所述岩芯顶杆的内部设置有通孔。Further, the core push rod is hollow inside, or the core push rod is provided with a through hole; the core push rod is hollow inside, or the core push rod There are through holes inside.
进一步地，所述距离测量部件设置在所述凹槽底面上，或者，所述岩芯托架的顶端包括向下凹陷的面和平面，所述向下凹陷的面用于放置所述岩芯，所述距离测量部件设置在所述平面上。Further, the distance measuring component is provided on the bottom surface of the groove, or the top end of the core bracket includes a downwardly concave surface and a flat surface, and the downwardly concave surface is used to place the core , The distance measuring component is provided on the plane.
第二方面，本发明提供一种岩芯测试设备，包括：测试主机和第一方面中任一岩芯夹持器；In a second aspect, the present invention provides a core testing device, including: a test host and any core holder of the first aspect;
所述测试主机分别与所述岩芯夹持器的第一探测部和第二探测部连接，用于根据信号对岩芯进行测试，其中，当所述第一探测部和所述第二探测部分别接触所述岩芯的两端表面时，可向所述岩芯的一端发射所述信号并在另一端接收通过所述岩芯传输的所述信号。The test host is respectively connected to the first detection part and the second detection part of the core holder, and is used to test the core according to the signal, wherein when the first detection part and the second detection When the two parts contact the surfaces of both ends of the core, they can transmit the signal to one end of the core and receive the signal transmitted through the core at the other end.
进一步地，所述测试主机包括：电压提供模块、电压测量模块，电流测量模块、第一存储模块和电阻率计算模块；Further, the test host includes: a voltage supply module, a voltage measurement module, a current measurement module, a first storage module, and a resistivity calculation module;
所述电压提供模块的正负极分别连接至所述第一探测部中的第一电极探 头和所述第二探测部中的第二电极探头，以向所述第一电极探头和所述第二电极探头提供不同的电压；The positive and negative poles of the voltage supply module are connected to the first electrode probe in the first detection part and the second electrode probe in the second detection part, respectively, to the first electrode probe and the first Two electrode probes provide different voltages;
所述电压测量模块分别与所述岩芯上设置的两个电极部件连接，用于测量所述两个电极部件之间的电压差ΔU，其中，所述第一电极探头到一个所述电极部件的距离等于所述第二电极探头到另一个所述电极部件的距离；The voltage measurement module is respectively connected to two electrode components provided on the core, and is used to measure the voltage difference ΔU between the two electrode components, wherein the first electrode probe is connected to one electrode component The distance is equal to the distance from the second electrode probe to the other electrode part;
所述电流测量模块，用于测量所述第一电极探头和所述第二电极探头之间的供电电流I；The current measurement module is used to measure the power supply current I between the first electrode probe and the second electrode probe;
所述电阻率计算模块，用于根据所述电压测量模块测得的所述电压差ΔU、所述电流测量模块测得的所述供电电流I、第一存储模块中的公式一计算所述岩芯的电阻率，其中，所述公式一为：ρ s＝[2π/(2/AM-2/AN)]*(ΔU/I)，其中，ρ s为所述岩芯的电阻率，AM为所述第一电极探头或所述第二电极探头到一个电极部件的距离，AN为所述第一电极探头或所述第二电极探头到另一个电极部件的距离，且AM小于AN。 The resistivity calculation module is configured to calculate the rock based on the voltage difference ΔU measured by the voltage measurement module, the power supply current I measured by the current measurement module, and formula 1 in the first storage module The resistivity of the core, where the formula one is: ρ s =[2π/(2/AM-2/AN)]*(ΔU/I), where ρ s is the resistivity of the core, AM Is the distance from the first electrode probe or the second electrode probe to one electrode part, AN is the distance from the first electrode probe or the second electrode probe to the other electrode part, and AM is less than AN.
进一步地，所述测试主机包括：脉冲发射器、信号接收器、转换模块、第二存储模块和波速测试模块；Further, the test host includes: a pulse transmitter, a signal receiver, a conversion module, a second storage module, and a wave speed test module;
所述脉冲发射器与所述第一探测部/第二探测部中的激发探头连接，所述信号接收器与所述第二探测部/第一探测部中的接收探头连接；The pulse transmitter is connected to the excitation probe in the first detection part/second detection part, and the signal receiver is connected to the reception probe in the second detection part/first detection part;
所述脉冲发射器，用于向所述激发探头发送高压脉冲，以通过所述高压脉冲激发所述激发探头发射超声波信号；The pulse transmitter is configured to send a high-voltage pulse to the excitation probe to excite the excitation probe to emit an ultrasonic signal through the high-voltage pulse;
所述信号接收器，用于接收从所述接收探头传输的所述超声波信号；The signal receiver is configured to receive the ultrasonic signal transmitted from the receiving probe;
所述转换模块，用于对所述信号接收器接收到的所述超声波信号进行模数转换处理，以确定所述超声波信号中的首波到达所述接收探头的时间T；The conversion module is configured to perform analog-to-digital conversion processing on the ultrasonic signal received by the signal receiver to determine the time T when the first wave in the ultrasonic signal reaches the receiving probe;
所述波速测试模块，用于根据所述时间T、第二存储模块中的公式二计算波速，其中，所述公式二为：V＝L/T，其中，V为所述波速，L为所述岩芯的长度。The wave speed test module is used to calculate the wave speed according to the time T and the formula 2 in the second storage module, wherein the formula 2 is: V=L/T, where V is the wave speed and L is Describe the length of the core.
本发明提供了一种岩芯夹持器和岩芯测试设备，该岩芯夹持器包括设有凹槽的底座，该凹槽用于容置岩芯，凹槽的相对两侧壁上对向设置有第二探测部和可移动的第一探测部，以利用第一探测部的可移动性，使得第一探测部和第二探测部与岩芯的两端表面紧密接触，且在紧密接触时，可向岩芯的一端发射信号并在岩芯的另一端接收通过岩芯传输的信号，以此通过第一探 测部和第二探测部之间的信号传输和设置在底座上的距离测量部件对岩芯的参数进行测试。The invention provides a core holder and a core testing device. The core holder includes a base provided with a groove, and the groove is used for accommodating a core. The second detection part and the movable first detection part are provided to utilize the movability of the first detection part, so that the first detection part and the second detection part are in close contact with the surface of both ends of the core When in contact, it can send a signal to one end of the core and receive the signal transmitted through the core at the other end of the core, so as to pass the signal transmission between the first detection part and the second detection part and the distance set on the base The measuring component tests the parameters of the core.
附图说明BRIEF DESCRIPTION
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。The drawings herein are incorporated into and constitute a part of this specification, show embodiments consistent with this disclosure, and are used together with the specification to explain the principles of this disclosure.
图1为本发明实施例一提供的一种岩芯夹持器的结构示意图；1 is a schematic structural diagram of a core holder provided by Embodiment 1 of the present invention;
图2为本发明实施例二提供的一种岩芯夹持器的结构示意图；2 is a schematic structural diagram of a core holder provided by Embodiment 2 of the present invention;
图3为本发明实施例二提供的一种岩芯夹持器的俯视图；3 is a top view of a core holder provided in Embodiment 2 of the present invention;
图4为本发明实施例三提供的一种岩芯测试设备的结构示意图；4 is a schematic structural diagram of a core testing device according to Embodiment 3 of the present invention;
图5为本发明实施例四提供的一种岩芯测试设备的结构示意图一；FIG. 5 is a schematic structural diagram 1 of a core testing device according to Embodiment 4 of the present invention;
图6为本发明实施例四提供的一种岩芯测试设备的结构示意图二；6 is a second schematic structural diagram of a core testing device according to Embodiment 4 of the present invention;
图7为本发明实施例五提供的一种岩芯测试设备的结构示意图一；7 is a schematic structural diagram 1 of a core testing device according to Embodiment 5 of the present invention;
图8为本发明实施例五提供的一种岩芯测试设备的结构示意图二；8 is a second schematic structural diagram of a core testing device according to Embodiment 5 of the present invention;
图9为本发明实施例五提供的一种岩芯测试设备中转换模块输出的超声波信号的示意图。9 is a schematic diagram of an ultrasonic signal output by a conversion module in a core testing device according to Embodiment 5 of the present invention.
附图标记：Reference mark:
1-底座1-Base 2-岩芯托架2-core bracket 3-弹性件3-Elastic
4-岩芯推杆4-Core push rod 5-岩芯顶杆5-core jack 6-传输线6-Transmission line
7-电极部件7-electrode parts 8-岩芯8-core 9-探头9-probe
10-距离测量部件10-Distance measurement components 11-第一探测部11-First Detection Department 12-第二探测部12-Second Detection Department
13-测试主机13-Test host 14-岩芯夹持器14-Core Holder 15-电压提供模块15-Voltage supply module
16-电压测量模块16-Voltage measurement module 17-电流测量模块17-Current measurement module 18-第一存储模块18-First storage module
19-电阻率计算模块19- Resistivity calculation module 20-脉冲发射器20-pulse transmitter 21-信号接收器21-signal receiver
22-转换模块22-Conversion module 23-第二存储模块23-Second storage module 24-波速测试模块24-wave speed test module
具体实施方式detailed description
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述， 显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本申请保护的范围。To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the protection scope of the present application.
本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。在不冲突的情况下，下述的实施例及实施例中的特征可以相互组合。需要说明的是，本文中的“第一”、“第二”仅用于区分，其并未对先后顺序进行限定。The terminology used in the specification of the present application herein is for the purpose of describing specific embodiments only, and is not intended to limit the present application. In the case of no conflict, the following embodiments and the features in the embodiments can be combined with each other. It should be noted that the "first" and "second" in this article are only used for distinction, and do not limit the order.
图1为本发明实施例一提供的一种岩芯夹持器的结构示意图；参考附图1可知，本实施例提供了一种岩芯夹持器，该岩芯夹持器用于对岩芯的参数进行测试，具体的，该岩芯夹持器包括：FIG. 1 is a schematic structural diagram of a core holder provided in Embodiment 1 of the present invention; referring to FIG. 1, it can be seen that this embodiment provides a core holder, which is used to align a core The parameters are tested. Specifically, the core holder includes:
设有凹槽的底座1，所述凹槽用于容置岩芯；A base 1 provided with a groove, which is used to accommodate a rock core;
所述凹槽的相对两侧壁上对向设置有第一探测部11和第二探测部12，其中，所述第一探测部11和所述第二探测部12分别接触所述岩芯的两端表面时，可向所述岩芯的一端发射信号并在另一端接收通过所述岩芯传输的信号；所述第一探测部11可在所述信号的传播方向上移动；A first detection part 11 and a second detection part 12 are provided on opposite side walls of the groove opposite to each other, wherein the first detection part 11 and the second detection part 12 respectively contact the core When the surfaces at both ends can transmit signals to one end of the core and receive signals transmitted through the core at the other end; the first detection part 11 can move in the propagation direction of the signal;
设置在所述底座1上的距离测量部件10，所述距离测量部件10与所述信号的传播方向平行设置。A distance measuring part 10 provided on the base 1 is arranged parallel to the propagation direction of the signal.
本申请提供的岩芯夹持器能够适用于对岩芯多种参数的测试。实际应用中，多种参数包括但不限于波速、电阻率、声发射等等，而针对不同的参数，向岩芯所发射的信号的类型可能并不相同，举例来说，若参数为波速，则上述信号可为超声波信号，若参数为电阻率，则上述信号可为电流信号。因此，在一种实施方式中，第一探测部或第二探测部只能发射单一类型的信号，该实施方式中第一探测部或第二探测部的结构设置较简单，在另一种实施方式中，第一探测部或第二探测部通过集成可发射多种不同类型的信号，该实施方式可实现至少两种参数的联合测试，方便快捷，且节约成本。The core holder provided in this application can be suitable for testing various parameters of the core. In practical applications, various parameters include but are not limited to wave speed, resistivity, acoustic emission, etc., and for different parameters, the types of signals transmitted to the core may be different. For example, if the parameter is wave speed, Then, the above signal may be an ultrasonic signal, and if the parameter is resistivity, the above signal may be a current signal. Therefore, in one embodiment, the first detection part or the second detection part can only emit a single type of signal. In this embodiment, the structure of the first detection part or the second detection part is relatively simple, and in another implementation In the method, the first detection part or the second detection part can emit a variety of different types of signals through integration. This embodiment can realize the joint test of at least two parameters, which is convenient and fast, and saves costs.
本方案中的岩芯夹持器支持任意形状的岩芯，也即无需将岩芯切割成特别规则的形状，从而缩短了整体的测试时间，提高了测试效率和用户体验度。具体的，凹槽底面可用于放置岩芯，或者，为便于测试和美观，底座还包括设置在凹槽底面上的岩芯托架，岩芯托架用于放置岩芯，其中，岩芯托架的 材料、数量和形状可根据实际需求进行设置，作为一种示例，为增加岩芯放置的稳定性，岩芯托架的顶端可以设置为向下凹陷的半球面，该向下凹陷的半球面用于放置岩芯，并利用第一探测部的可移动性，使得第一探测部和第二探测部分别接触岩芯的两端表面，以此通过底座、第一探测部和第二探测部实现岩芯的夹持。The core holder in this solution supports cores of any shape, that is, there is no need to cut the core into a special regular shape, thereby shortening the overall test time and improving test efficiency and user experience. Specifically, the bottom surface of the groove can be used to place a core, or, to facilitate testing and aesthetics, the base further includes a core bracket provided on the bottom surface of the groove, the core bracket is used to place the core, wherein the core support The material, quantity and shape of the rack can be set according to actual needs. As an example, in order to increase the stability of the core placement, the top of the core bracket can be set as a downwardly hemispherical surface. The surface is used to place the core, and the movability of the first detection part is used so that the first detection part and the second detection part respectively contact the surfaces of both ends of the core, so as to pass through the base, the first detection part and the second detection The part realizes the clamping of the core.
以实际场景举例来说：第一探测部可在信号的传播方向上移动包括两种情形，其中，一种情形是，第一探测部沿信号的传播方向进行移动，另一种情形是，第一探测部沿信号的传播方向的反方向进行移动，从而通过这两种情形的移动与第二探测部相互配合实现与岩芯的有效接触，另外，第二探测部可固定设置在一个侧壁上，也可按照类似第一探测部的设置，将第二探测部设置为可在信号的传播方向上移动。为进一步使得第一探测部和第二探测部均与岩芯有效接触，提高测试的准确性，第一探测部和第二探测部的用于接触岩芯表面的端面呈椎体，其中，椎体的形状不限，可以是规则椎体，也可以是不规则椎体，例如，可以是圆锥体、正三棱锥体、不规则的三棱锥体、正四棱锥体等等。Taking an actual scenario as an example: the first detection section can move in the signal propagation direction includes two cases, one of which is that the first detection section moves along the signal propagation direction, and the other is that A detection part moves in the opposite direction of the signal propagation direction, so that the movement of the two situations cooperates with the second detection part to achieve effective contact with the core. In addition, the second detection part can be fixedly arranged on a side wall In the above, the second detection part may be arranged to be movable in the propagation direction of the signal according to the arrangement similar to the first detection part. In order to further make the first detection part and the second detection part effectively contact with the core and improve the accuracy of the test, the end surfaces of the first detection part and the second detection part for contacting the surface of the core are vertebral bodies, wherein The shape of the body is not limited, and it may be a regular vertebral body or an irregular vertebral body, for example, it may be a cone, a regular triangular pyramid, an irregular triangular pyramid, a regular quadrangular pyramid, etc.
为实现测试过程中对于距离测量的需求，底座上还设置有带刻度的距离测量部件，其中，距离测量部件的材料不限，例如，可以是塑料标尺。具体的，距离测量部件可设置在凹槽底面上，作为一种示例，距离测量部件中带刻度的面朝上，可参照附图3中的附图标记10所示，或者，岩芯托架的顶端设置有向下凹陷的面和平面，其中，向下凹陷的面用于放置岩芯，距离测量部件设置在平面上。In order to meet the requirement for distance measurement during the test, a distance measuring component with scales is also provided on the base, wherein the material of the distance measuring component is not limited, for example, it may be a plastic scale. Specifically, the distance measuring component may be provided on the bottom surface of the groove. As an example, the scaled surface of the distance measuring component faces upward, as shown by reference numeral 10 in FIG. 3, or the core bracket The top of the is provided with a downwardly concave surface and a flat surface, wherein the downwardly concave surface is used to place the core, and the distance measuring component is provided on the flat surface.
具体的，将岩芯放置在凹槽内或者岩芯托架上，且第一探测部和第二探测部分别与岩芯的两端紧密接触时，可控制第一探测部和第二探测部向岩芯发射信号，并通过第二探测部或第一探测部接收通过岩芯传输的信号，然后可基于传输的信号和距离测量部件，可采集到计算相关参数所需的信息，从而根据采集的信息计算出相关参数，完成相关参数的测试。以测试电阻率举例来说，控制第一探测部或第二探测部向岩芯发射电流信号之后，可通过万用表等仪器采集到第一探测部和第二探测部之间的供电电流，并采集岩芯上两个电极之间的电压差，其中，一个电极到第一探测部与岩芯接触的端部的距离等于另一个电极到第二探测部与岩芯接触的端部的距离，然后再基于距 离测量部件采集第一探测部与岩芯接触的端部到第二探测部与岩芯接触的端部之间的目标距离，从而基于本方案中的岩芯夹持器能够采集到上述供电电流、电压差和目标距离，并计算出岩芯的电阻率，因此，实现了电阻率的测试。Specifically, when the core is placed in the groove or on the core bracket, and the first detection portion and the second detection portion are in close contact with both ends of the core, the first detection portion and the second detection portion can be controlled Send a signal to the core, and receive the signal transmitted through the core through the second detection part or the first detection part, and then based on the transmitted signal and the distance measurement component, the information required to calculate the relevant parameters can be collected, so that according to the collection The relevant parameters are calculated to complete the relevant parameter test. Taking the test resistivity as an example, after controlling the first detection part or the second detection part to emit a current signal to the core, the power supply current between the first detection part and the second detection part can be collected by a multimeter and other instruments and collected The voltage difference between the two electrodes on the core, where the distance from one electrode to the end where the first detection part contacts the core is equal to the distance from the other electrode to the end where the second detection part contacts the core, then Based on the distance measurement component, the target distance between the end of the first detection part contacting the core and the end of the second detection part contacting the core is collected, so that the core holder based on this solution can collect the above Power supply current, voltage difference and target distance, and calculate the resistivity of the core, therefore, the test of resistivity is realized.
本实施例提供了一种岩芯夹持器，该岩芯夹持器包括设有凹槽的底座，该凹槽用于容置岩芯，凹槽的相对两侧壁上对向设置有第二探测部和可移动的第一探测部，以利用第一探测部的可移动性，使得第一探测部和第二探测部与岩芯的两端表面紧密接触，且在紧密接触时，可向岩芯的一端发射信号并在岩芯的另一端接收通过岩芯传输的信号，以通过第一探测部和第二探测部之间的信号传输和设置在底座上的距离测量部件对岩芯的参数进行测试。This embodiment provides a core holder. The core holder includes a base provided with a groove. The groove is used to accommodate a core. Opposite side walls of the groove are provided with opposing Two detection sections and a movable first detection section to utilize the mobility of the first detection section so that the first detection section and the second detection section are in close contact with the surfaces of both ends of the core, and when in close contact, the Sending a signal to one end of the core and receiving the signal transmitted through the core at the other end of the core, through the signal transmission between the first detection part and the second detection part and the distance measurement component provided on the base to the core The parameters.
进一步的，为实现第一探测部在信号的传播方向上可移动，以使得第一探测部和第二探测部与岩芯的两端紧密接触，可选的，图2为本发明实施例二提供的一种岩芯夹持器的结构示意图，图3为本发明实施例二提供的一种岩芯夹持器的俯视图；参考附图2和附图3可知，在实施例一的基础上，岩芯夹持器包括：设有凹槽的底座1、设置在凹槽底面上的岩芯托架2、弹性件3和距离测量部件10；Further, in order to realize that the first detection part is movable in the signal propagation direction, so that the first detection part and the second detection part are in close contact with both ends of the core, optionally, FIG. 2 is Embodiment 2 of the present invention A schematic structural diagram of a core holder provided. FIG. 3 is a top view of a core holder provided in Embodiment 2 of the present invention; referring to FIGS. 2 and 3, it can be seen that on the basis of Embodiment 1 , The core holder includes: a base with a groove 1, a core bracket 2 provided on the bottom of the groove, an elastic member 3, and a distance measuring member 10;
弹性件3的一端设置在一个侧壁上，弹性件3的另一端与第一探测部11连接，弹性件3用于抵推第一探测部11，以使第一探测部11可在信号的传播方向移动；One end of the elastic member 3 is disposed on a side wall, and the other end of the elastic member 3 is connected to the first detection portion 11. The elastic member 3 is used to push the first detection portion 11 so that the first detection portion 11 can Move in the direction of propagation;
其中，第一探测部11，包括：岩芯推杆4、用于发射/接收电流信号的第一电极探头、以及用于发射超声波信号的激发探头/用于接收超声波信号的接收探头；弹性件3的另一端与岩芯推杆4的一端连接；岩芯推杆4的另一端设置有第一电极探头和激发探头/接收探头；Among them, the first detection part 11 includes: a core push rod 4, a first electrode probe for transmitting/receiving current signals, and an excitation probe for transmitting ultrasonic signals/receiving probe for receiving ultrasonic signals; elastic members The other end of 3 is connected to one end of the core push rod 4; the other end of the core push rod 4 is provided with a first electrode probe and an excitation probe/reception probe;
第二探测部12，包括：岩芯顶杆5、用于接收/发射电流信号的第二电极探头、以及用于接收超声波信号的接收探头/用于发射超声波信号的激发探头；岩芯顶杆5的一端设置在另一个侧壁上；岩芯顶杆5的另一端设置有第二电极探头和接收探头/激发探头。The second detection part 12 includes: a core jack 5, a second electrode probe for receiving/transmitting current signals, and a receiving probe for receiving ultrasonic signals/an excitation probe for transmitting ultrasonic signals; a core jack One end of 5 is provided on the other side wall; the other end of the core jack 5 is provided with a second electrode probe and a receiving probe/excitation probe.
在本实施例中，第一探测部和第二探测部均同时集成了两种不同类型的探头，参考附图2，也即A、B两处的探头9是由不同类型的探头集成得到的， 以此实现如波速和电阻率两种参数的快速测试。具体的，第一探测部和第二探测部集成探头的形式可包括如下几种：一，第一探测部集成有用于发射电流信号的第一电极探头和激发探头、第二探测部集成有用于接收电流信号的第二电极探头和接收探头；二，第二探测部集成有用于发射电流信号的第一电极探头和接收探头、第二探测部集成有用于接收电流信号的第二电极探头和激发探头；三，第一探测部集成有用于接收电流信号的第一电极探头和激发探头、第二探测部集成有用于发射电流信号的第二电极探头和接收探头；四，第一探测部集成有用于接收电流信号的第一电极探头和接收探头、第二探测部集成有用于发射电流信号的第二电极探头和激发探头。In this embodiment, both the first detection part and the second detection part integrate two different types of probes at the same time. Refer to FIG. 2, that is, the probes 9 at A and B are integrated by different types of probes. In order to achieve rapid testing of two parameters such as wave speed and resistivity. Specifically, the forms of the integrated probes of the first detection section and the second detection section may include the following types: First, the first detection section integrates the first electrode probe and the excitation probe for transmitting current signals, and the second detection section integrates the A second electrode probe and a receiving probe that receive current signals; Second, the second detection section integrates a first electrode probe and a receiving probe for transmitting a current signal, and a second detection section integrates a second electrode probe and an excitation for receiving a current signal Probe; three, the first detection part is integrated with a first electrode probe and excitation probe for receiving current signals, the second detection part is integrated with a second electrode probe and receiving probe for transmitting current signals; fourth, the first detection part is integrated and useful The first electrode probe, the receiving probe, and the second detection part that receive the current signal integrate a second electrode probe and an excitation probe for transmitting the current signal.
以实际场景举例来说：岩芯托架2用于放置岩芯8，弹性件3抵推岩芯推杆4，为岩芯推杆4提供水平推力，促使岩芯推杆4和岩芯推杆5相互配合，使得两端的探头9与岩芯8的两端紧密接触，且在紧密接触后，一端的探头9向岩芯一端发射信号，另一端的探头9接收通过岩芯传输的信号，以对夹持的岩芯进行参数测试。其中，弹性件3包括但不限于弹簧。Take the actual scene as an example: the core bracket 2 is used to place the core 8 and the elastic member 3 is pushed against the core push rod 4 to provide horizontal thrust for the core push rod 4 to promote the core push rod 4 and the core push The rods 5 cooperate with each other so that the probes 9 at both ends are in close contact with both ends of the core 8, and after close contact, the probe 9 at one end transmits a signal to one end of the core, and the probe 9 at the other end receives the signal transmitted through the core, To test the parameters of the clamped core. Wherein, the elastic member 3 includes but is not limited to a spring.
另外，A处探头9中所集成的第一电极探头和激发探头/接收探头分别与不同的传输线连接，B处探头9中所集成的第二电极探头和接收探头/激发探头也分别与不同的传输线连接，那么为增加美观度，避免传输线设置在外部造成的杂乱无章问题，岩芯推杆4的内部呈空心状，或者，岩芯推杆4的内部设置有通孔；岩芯顶杆5的内部呈空心状，或者，岩芯顶杆5的内部设置有通孔，这样，可在岩芯推杆4的内部和岩芯顶杆5的内部分别部署不同的传输线6，并将不同的传输线6的一端与探头9中集成的相应探头进行连接。In addition, the first electrode probe and the excitation probe/reception probe integrated in the probe 9 at point A are respectively connected to different transmission lines, and the second electrode probe and the reception probe/excitation probe integrated in the probe 9 at point B are also different from the different The connection of the transmission line, then in order to increase the aesthetics and avoid the messy problem caused by the external installation of the transmission line, the inside of the core push rod 4 is hollow, or the inside of the core push rod 4 is provided with a through hole; The inside is hollow, or the core jack 5 is provided with a through hole, so that different transmission lines 6 can be deployed in the core push rod 4 and the core jack 5 respectively, and different transmission lines can be arranged One end of 6 is connected with the corresponding probe integrated in the probe 9.
值得说明的是，岩芯8并不属于岩芯夹持器的一部分，附图2、附图3以及后续相关的附图只是为了便于理解结构而示出的。It is worth noting that the core 8 is not a part of the core holder, and Figures 2, 3 and subsequent related drawings are only shown to facilitate understanding of the structure.
本实施例通过在侧壁和岩芯推杆之间设置弹性件，从而可以利用弹性件对岩芯推杆的抵推作用，使得岩芯推杆的端部和岩芯顶杆的端部与岩芯两端的表面紧密接触；另外，通过将岩芯推杆和岩芯顶杆的内部设置为空心状或通孔，以此便于在内部部署传输线，增加了美观度。In this embodiment, by providing an elastic member between the side wall and the core push rod, the elastic member can be used to push the core push rod, so that the end of the core push rod and the end of the core jack The surfaces of the two ends of the core are in close contact; in addition, by setting the inside of the core push rod and the core jack to be hollow or through holes, it is convenient to deploy the transmission line inside and increase the aesthetics.
图4为本发明实施例三提供的一种岩芯测试设备的结构示意图；参考附图4可知，本实施例提供了一种岩芯测试设备，该岩芯测试设备用于自动实 现对多种参数的测试，具体的，该岩芯测试设备包括：FIG. 4 is a schematic structural diagram of a core testing device according to Embodiment 3 of the present invention; referring to FIG. 4, it can be seen that this embodiment provides a core testing device. The core testing device is used to automatically implement Parameter testing, specifically, the core testing equipment includes:
测试主机13和如前述任一实施方式所述的岩芯夹持器14； Test host 13 and the core holder 14 as described in any of the foregoing embodiments;
测试主机13分别与岩芯夹持器14的第一探测部11和第二探测部12连接，用于根据信号对岩芯进行测试，其中，当第一探测部11和第二探测部12分别接触岩芯的两端表面时，可向岩芯的一端发射信号并在另一端接收通过岩芯传输的信号。The test host 13 is respectively connected to the first detection part 11 and the second detection part 12 of the core holder 14 for testing the core according to the signal, wherein when the first detection part 11 and the second detection part 12 are respectively When touching the surfaces of both ends of the core, a signal can be transmitted to one end of the core and received at the other end through the core.
在本实施例中，测试主机可包括多个不同的测试单元，每一个测试单元对应一种参数的测试，每一个测试单元可控制第一探测部或第二探测部向岩芯的一端发射相应的信号，以通过发射的信号对岩芯进行参数的自动测试。In this embodiment, the test host may include a plurality of different test units, each test unit corresponds to a parameter test, and each test unit may control the first detection part or the second detection part to emit a corresponding one to one end of the core The signal is used to automatically test the parameters of the core through the transmitted signal.
本实施例提供了一种岩芯测试设备，该岩芯测试设备由测试主机和岩芯夹持器组成，利用岩芯夹持器的第一探测部的可移动性，使得第一探测部和第二探测部与岩芯的两端紧密接触，且在紧密接触时，可向岩芯一端发射信号且在另一端接收通过岩芯传输的信号，以通过第一探测部和第二探测部之间传输的信号对岩芯的参数进行自动测试，提高了测试效率。This embodiment provides a core testing device. The core testing device is composed of a test host and a core holder. Using the movability of the first detection section of the core holder, the first detection section and The second detection part is in close contact with both ends of the core, and when in close contact, it can transmit a signal to one end of the core and receive a signal transmitted through the core at the other end to pass between the first detection part and the second detection part The signals transmitted between them automatically test the parameters of the core, which improves the test efficiency.
图5为本发明实施例四提供的一种岩芯测试设备的结构示意图一，如图5所示，在实施例四的基础上，测试主机13包括：电压提供模块15、电压测量模块16，电流测量模块17、第一存储模块18和电阻率计算模块19；FIG. 5 is a schematic structural diagram 1 of a core testing device according to Embodiment 4 of the present invention. As shown in FIG. 5, on the basis of Embodiment 4, the test host 13 includes: a voltage supply module 15 and a voltage measurement module 16, Current measurement module 17, first storage module 18 and resistivity calculation module 19;
电压提供模块15的正负极分别连接至第一探测部11中的第一电极探头和第二探测部12中的第二电极探头，以向第一电极探头和第二电极探头提供不同的电压；The positive and negative poles of the voltage supply module 15 are respectively connected to the first electrode probe in the first detection part 11 and the second electrode probe in the second detection part 12 to provide different voltages to the first electrode probe and the second electrode probe ;
电压测量模块16分别与岩芯上设置的两个电极部件连接，用于测量两个电极部件之间的电压差ΔU，其中，第一电极探头到一个电极部件的距离等于第二电极探头到另一个电极部件的距离；The voltage measuring module 16 is respectively connected to the two electrode components provided on the core, and is used to measure the voltage difference ΔU between the two electrode components, wherein the distance from the first electrode probe to one electrode component is equal to the second electrode probe to the other The distance of an electrode part;
电流测量模块17，用于测量第一电极探头和第二电极探头之间的供电电流I；The current measurement module 17 is used to measure the power supply current I between the first electrode probe and the second electrode probe;
电阻率计算模块19，用于根据电压测量模块16测得的电压差ΔU、电流测量模块17测得的供电电流I、第一存储模块18中的公式一计算岩芯的电阻率，其中，公式一为：ρ s＝[2π/(2/AM-2/AN)]*(ΔU/I)，其中，ρ s为岩芯的电阻率，AM为第一电极探头或第二电极探头到一个电极部件的距离，AN为 第一电极探头或第二电极探头到另一个电极部件的距离，且AM小于AN。 The resistivity calculation module 19 is used to calculate the resistivity of the core according to the voltage difference ΔU measured by the voltage measurement module 16, the power supply current I measured by the current measurement module 17, and the formula one in the first storage module 18, where the formula One is: ρ s =[2π/(2/AM-2/AN)]*(ΔU/I), where ρ s is the resistivity of the core and AM is the first electrode probe or the second electrode probe to one The distance of the electrode part, AN is the distance from the first electrode probe or the second electrode probe to another electrode part, and AM is less than AN.
其中，电压提供模块15的正极与用于发射电流信号的第一电极探头或用于发射电流信号的第二电极探头连接，电压提供模块15的负极与用于接收电流信号的第二电极探头或用于接收电流信号的第一电极探头连接。电极部件可以是电极夹或者是电极片等等。The positive electrode of the voltage supply module 15 is connected to the first electrode probe for transmitting current signals or the second electrode probe for transmitting current signals, and the negative electrode of the voltage providing module 15 is connected to the second electrode probe for receiving current signals or A first electrode probe connection for receiving current signals. The electrode part may be an electrode clip, an electrode sheet, or the like.
可选的，可参照附图6所示，附图6为本发明实施例四提供的一种岩芯测试设备的结构示意图二，本实施例采用对称四极方式实现电阻率的测试。其中，可根据底座1上设置的距离测量部件10调节两个电极部件(参考附图2中的两个电极部件7)位置，以使得电极AM之间的距离等于BN之间的距离。另，参考附图6可知，电压提供模块15采用的电源，电压测量模块采用的电压表，而电流测量模块17可采用电流表(图中未示出)且可设置在电源与岩芯8组成的链路中。Optionally, reference may be made to FIG. 6, which is a schematic structural diagram 2 of a core testing device provided in Embodiment 4 of the present invention. In this embodiment, a symmetric four-pole method is used to implement resistivity testing. Wherein, the positions of the two electrode components (refer to the two electrode components 7 in FIG. 2) can be adjusted according to the distance measuring component 10 provided on the base 1 so that the distance between the electrodes AM is equal to the distance between BN. In addition, referring to FIG. 6, it can be seen that the power supply used by the voltage supply module 15 is a voltmeter used by the voltage measurement module, and the current measurement module 17 can be an ammeter (not shown in the figure) and can be provided between the power supply and the core 8. Link.
以实际场景举例来说：A点处探头9中所集成的第一电极探头向岩芯的一端发射电流信号，B点处探头9中所集成的第二电极探头接收通过岩芯传输的电流信号，以此通过第一电极探头和第二电极探头自动对被测的岩芯加载连续电流，并通过电压提供模块15和电流测量模块17分别进行电压差ΔU和供电电流I的采集，以通过电阻率计算模块19根据采集到的电压差ΔU和供电电流I计算被测的岩芯的电阻率。Take the actual scenario as an example: the first electrode probe integrated in the probe 9 at point A transmits a current signal to one end of the core, and the second electrode probe integrated in the probe 9 at point B receives the current signal transmitted through the core In this way, the first electrode probe and the second electrode probe are used to automatically load the measured core with a continuous current, and the voltage difference module ΔU and the power supply current I are collected by the voltage supply module 15 and the current measurement module 17 respectively to pass the resistance The rate calculation module 19 calculates the resistivity of the measured core based on the collected voltage difference ΔU and the supply current I.
本实施例采用对称四极方式，通过第一电极探头和第二电极探头对被测的岩芯加载连续电流，以此根据采集到的第一电极探头和第二电极探头之间的供电电流和岩芯上设置的两个电极部件之间的电压差实现对岩芯的电阻率的测试，而且，电路简单，采用一些常规元器件，能够有效节省成本。In this embodiment, a symmetrical four-pole method is used, and the first and second electrode probes are used to apply a continuous current to the core to be measured, based on the collected power supply current between the first and second electrode probes. The voltage difference between the two electrode components provided on the core realizes the test of the resistivity of the core, and the circuit is simple, and some conventional components are adopted, which can effectively save costs.
图7为本发明实施例五提供的一种岩芯测试设备的结构示意图一，参考附图7可知，测试主机13包括：脉冲发射器20、信号接收器21、转换模块22、第二存储模块23和波速测试模块24；7 is a schematic structural diagram 1 of a core testing device according to Embodiment 5 of the present invention. Referring to FIG. 7, it can be seen that the test host 13 includes: a pulse transmitter 20, a signal receiver 21, a conversion module 22, and a second storage module 23 and wave speed test module 24;
脉冲发射器20与第一探测部11/第二探测部12中的激发探头连接，信号接收器21与第二探测部11/第一探测部12中的接收探头连接；The pulse transmitter 20 is connected to the excitation probe in the first detection section 11/second detection section 12, and the signal receiver 21 is connected to the reception probe in the second detection section 11/first detection section 12;
脉冲发射器20，用于向激发探头发送高压脉冲，以通过高压脉冲激发激发探头发射超声波信号；The pulse transmitter 20 is used to send a high-voltage pulse to the excitation probe to excite the excitation probe to emit an ultrasonic signal through the high-voltage pulse;
信号接收器21，用于接收从接收探头传输的超声波信号；The signal receiver 21 is used to receive the ultrasonic signal transmitted from the receiving probe;
转换模块22，用于对信号接收器21接收到的超声波信号进行模数转换处理，以确定超声波信号中的首波到达接收探头的时间T；The conversion module 22 is used to perform analog-to-digital conversion processing on the ultrasonic signal received by the signal receiver 21 to determine the time T when the first wave in the ultrasonic signal reaches the receiving probe;
波速测试模块24，用于根据时间T、第二存储模块23中的公式二计算波速，其中，公式二为：V＝L/T，其中，V为波速，L为岩芯的长度。The wave speed test module 24 is used to calculate the wave speed according to the time T and the formula 2 in the second storage module 23, where the formula 2 is: V=L/T, where V is the wave speed and L is the length of the core.
具体的，激发探头发射的超声波信号在岩芯中的传输可参照附图8所示，附图8为本发明实施例五提供的一种岩芯测试设备的结构示意图二。附图9为本发明实施例五提供的一种岩芯测试设备中转换模块输出的超声波信号的示意图，接收探头接收到通过岩芯传输的超声波信号之后，超声波信号通过传输线6传输至转换模块22，由转换模块22对接收到的超声波信号进行模数转换，经过模数转换后可以附图9中曲线图的形式呈现超声波信号，其中，曲线图的纵坐标为振幅、横坐标为时间，从曲线图中能够确定超声波信号中的首波到达接收探头的时间，以此通过波速测试模块24或者是人工方式计算出波速。Specifically, the transmission of the ultrasonic signal emitted by the excitation probe in the core may be shown in FIG. 8, which is a schematic structural diagram 2 of a core testing device according to Embodiment 5 of the present invention. 9 is a schematic diagram of an ultrasonic signal output by a conversion module in a core testing device according to Embodiment 5 of the present invention. After the receiving probe receives the ultrasonic signal transmitted through the core, the ultrasonic signal is transmitted to the conversion module 22 through the transmission line 6 , The conversion module 22 performs analog-to-digital conversion on the received ultrasonic signal, and after the analog-to-digital conversion, the ultrasonic signal can be presented in the form of a graph in FIG. 9, where the vertical coordinate of the graph is amplitude and the horizontal coordinate is time, from In the graph, the time when the first wave of the ultrasonic signal reaches the receiving probe can be determined, so that the wave speed can be calculated by the wave speed test module 24 or manually.
本实施例通过激发探头和接收探头实现了对于波速的测试，结构简单，易于实现。This embodiment realizes the test of the wave speed by exciting the probe and receiving the probe, and has a simple structure and is easy to implement.
本方案实现了对岩芯的电阻率和波速的联合测试，提高了工作效率，可以满足现代社会解决地质灾害与岩石工程安全问题的需要。。This solution realizes the joint test of the resistivity and wave speed of the rock core, improves the work efficiency, and can meet the needs of modern society to solve the problems of geological disasters and rock engineering safety. .

Claims (10)

  1. 一种岩芯夹持器，其特征在于，包括：A core holder is characterized in that it includes:
    设有凹槽的底座，所述凹槽用于容置岩芯；A base with a groove, the groove is used to accommodate a rock core;
    所述凹槽的相对两侧壁上对向设置有第一探测部和第二探测部，其中，所述第一探测部和所述第二探测部分别接触所述岩芯的两端表面时，可向所述岩芯的一端发射信号并在另一端接收通过所述岩芯传输的信号；所述第一探测部可在所述信号的传播方向上移动；A first detection part and a second detection part are provided on opposite side walls of the groove oppositely, wherein when the first detection part and the second detection part respectively contact the two end surfaces of the core , Can transmit a signal to one end of the core and receive a signal transmitted through the core at the other end; the first detection part can move in the propagation direction of the signal;
    设置在所述底座上的距离测量部件，所述距离测量部件与所述信号的传播方向平行设置。A distance measuring component provided on the base, the distance measuring component being arranged parallel to the propagation direction of the signal.
  2. 根据权利要求1所述的岩芯夹持器，其特征在于，所述底座还包括设置在所述凹槽底面上的岩芯托架，所述岩芯托架用于放置所述岩芯。The core holder according to claim 1, wherein the base further comprises a core bracket provided on the bottom surface of the groove, and the core bracket is used for placing the core.
  3. 根据权利要求1所述的岩芯夹持器，其特征在于，所述第一探测部和所述第二探测部的用于接触所述岩芯表面的端部呈锥体。The core holder according to claim 1, wherein the ends of the first detection portion and the second detection portion for contacting the surface of the core are tapered.
  4. 根据权利要求1至3任一项所述的岩芯夹持器，其特征在于，所述岩芯夹持器，还包括：弹性件；The core holder according to any one of claims 1 to 3, wherein the core holder further comprises: an elastic member;
    所述弹性件的一端设置在一个所述侧壁上，所述弹性件的另一端与所述第一探测部连接，所述弹性件用于抵推所述第一探测部，以使所述第一探测部可在所述信号的传播方向移动。One end of the elastic member is disposed on one of the side walls, and the other end of the elastic member is connected to the first detection portion. The elastic member is used to push the first detection portion so that the The first detection section is movable in the propagation direction of the signal.
  5. 根据权利要求4所述的岩芯夹持器，其特征在于，The core holder according to claim 4, wherein:
    所述第一探测部，包括：岩芯推杆、用于发射/接收电流信号的第一电极探头、以及用于发射超声波信号的激发探头/用于接收超声波信号的接收探头；The first detection part includes: a core push rod, a first electrode probe for transmitting/receiving current signals, and an excitation probe for transmitting ultrasonic signals/a receiving probe for receiving ultrasonic signals;
    所述弹性件的另一端与所述岩芯推杆的一端连接；The other end of the elastic member is connected to one end of the core push rod;
    所述岩芯推杆的另一端设置有所述第一电极探头和所述激发探头/接收探头；The first end of the core push rod is provided with the first electrode probe and the excitation probe/reception probe;
    所述第二探测部，包括：岩芯顶杆、用于接收/发射电流信号的第二电极探头、以及用于接收超声波信号的接收探头/用于发射超声波信号的激发探头；The second detection part includes: a core mandrel, a second electrode probe for receiving/transmitting current signals, and a receiving probe for receiving ultrasonic signals/an excitation probe for transmitting ultrasonic signals;
    所述岩芯顶杆的一端设置在另一个所述侧壁上；One end of the core jack is provided on the other side wall;
    所述岩芯顶杆的另一端设置有所述第二电极探头和所述接收探头/激发探头。The second end of the core rod is provided with the second electrode probe and the receiving probe/excitation probe.
  6. 根据权利要求5所述的岩芯夹持器，其特征在于，The core holder according to claim 5, wherein:
    所述岩芯推杆的内部呈空心状，或者，所述岩芯推杆的内部设置有通孔；The inside of the core push rod is hollow, or the inside of the core push rod is provided with a through hole;
    所述岩芯顶杆的内部呈空心状，或者，所述岩芯顶杆的内部设置有通孔。The inside of the core jack is hollow, or the inside of the core jack is provided with a through hole.
  7. 根据权利要求1至3任一项所述的岩芯夹持器，其特征在于，The core holder according to any one of claims 1 to 3, characterized in that
    所述距离测量部件设置在所述凹槽底面上，或者，所述岩芯托架的顶端设置有向下凹陷的面和平面，所述向下凹陷的面用于放置所述岩芯，所述距离测量部件设置在所述平面上。The distance measuring component is provided on the bottom surface of the groove, or the top end of the core bracket is provided with a downwardly concave surface and a flat surface, and the downwardly concave surface is used for placing the core. The distance measuring part is provided on the plane.
  8. 一种岩芯测试设备，其特征在于，包括：测试主机和如权利要求1-7任一项所述的岩芯夹持器；A core testing device, comprising: a test host and a core holder according to any one of claims 1-7;
    所述测试主机分别与所述岩芯夹持器的第一探测部和第二探测部连接，用于根据信号对岩芯进行测试，其中，当所述第一探测部和所述第二探测部分别接触所述岩芯的两端表面时，可向所述岩芯的一端发射所述信号并在另一端接收通过所述岩芯传输的所述信号。The test host is respectively connected to the first detection part and the second detection part of the core holder, and is used to test the core according to the signal, wherein when the first detection part and the second detection When the two parts contact the surfaces of both ends of the core, they can transmit the signal to one end of the core and receive the signal transmitted through the core at the other end.
  9. 根据权利要求8所述的岩芯测试设备，其特征在于，所述测试主机包括：电压提供模块、电压测量模块，电流测量模块、第一存储模块和电阻率计算模块；The core testing equipment according to claim 8, wherein the test host includes: a voltage supply module, a voltage measurement module, a current measurement module, a first storage module, and a resistivity calculation module;
    所述电压提供模块的正负极分别连接至所述第一探测部中的第一电极探头和所述第二探测部中的第二电极探头，以向所述第一电极探头和所述第二电极探头提供不同的电压；The positive and negative poles of the voltage supply module are connected to the first electrode probe in the first detection part and the second electrode probe in the second detection part, respectively, to the first electrode probe and the first Two electrode probes provide different voltages;
    所述电压测量模块分别与所述岩芯上设置的两个电极部件连接，用于测量所述两个电极部件之间的电压差ΔU，其中，所述第一电极探头到一个所述电极部件的距离等于所述第二电极探头到另一个所述电极部件的距离；The voltage measurement module is respectively connected to two electrode components provided on the core, and is used to measure the voltage difference ΔU between the two electrode components, wherein the first electrode probe is connected to one electrode component The distance is equal to the distance from the second electrode probe to the other electrode part;
    所述电流测量模块，用于测量所述第一电极探头和所述第二电极探头之间的供电电流I；The current measurement module is used to measure the power supply current I between the first electrode probe and the second electrode probe;
    所述电阻率计算模块，用于根据所述电压测量模块测得的所述电压差ΔU、所述电流测量模块测得的所述供电电流I、第一存储模块中的公式一计算所述岩芯的电阻率，其中，所述公式一为：ρ s＝[2π/(2/AM-2/AN)]*(ΔU/I)，其中，ρ s为所述岩芯的电阻率，AM为所述第一电极探头或所述第二电极探头到一个电极部件的距离，AN为所述第一电极探头或所述第二电极探头到另一个电极部件的距离，且AM小于AN。 The resistivity calculation module is configured to calculate the rock based on the voltage difference ΔU measured by the voltage measurement module, the power supply current I measured by the current measurement module, and formula 1 in the first storage module The resistivity of the core, where the formula one is: ρ s =[2π/(2/AM-2/AN)]*(ΔU/I), where ρ s is the resistivity of the core, AM Is the distance from the first electrode probe or the second electrode probe to one electrode part, AN is the distance from the first electrode probe or the second electrode probe to the other electrode part, and AM is less than AN.
  10. 根据权利要求8所述的岩芯测试设备，其特征在于，所述测试主机包括：脉冲发射器、信号接收器、转换模块、第二存储模块和波速测试模块；The core test equipment according to claim 8, wherein the test host includes: a pulse transmitter, a signal receiver, a conversion module, a second storage module, and a wave speed test module;
    所述脉冲发射器与所述第一探测部/第二探测部中的激发探头连接，所述信号接收器与所述第二探测部/第一探测部中的接收探头连接；The pulse transmitter is connected to the excitation probe in the first detection part/second detection part, and the signal receiver is connected to the reception probe in the second detection part/first detection part;
    所述脉冲发射器，用于向所述激发探头发送高压脉冲，以通过所述高压脉冲激发所述激发探头发射超声波信号；The pulse transmitter is configured to send a high-voltage pulse to the excitation probe to excite the excitation probe to emit an ultrasonic signal through the high-voltage pulse;
    所述信号接收器，用于接收从所述接收探头传输的所述超声波信号；The signal receiver is configured to receive the ultrasonic signal transmitted from the receiving probe;
    所述转换模块，用于对所述信号接收器接收到的所述超声波信号进行模数转换处理，以确定所述超声波信号中的首波到达所述接收探头的时间T；The conversion module is configured to perform analog-to-digital conversion processing on the ultrasonic signal received by the signal receiver to determine the time T when the first wave in the ultrasonic signal reaches the receiving probe;
    所述波速测试模块，用于根据所述时间T、第二存储模块中的公式二计算波速，其中，所述公式二为：V＝L/T，其中，V为所述波速，L为所述岩芯的长度。The wave speed test module is used to calculate the wave speed according to the time T and the formula 2 in the second storage module, wherein the formula 2 is: V=L/T, where V is the wave speed and L is Describe the length of the core.
PCT/CN2018/122679 2018-12-21 2018-12-21 Rock core holder and rock core test apparatus WO2020124555A1 (en)

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