CN113447302A - Underground coal seam gas content measuring device and method - Google Patents
Underground coal seam gas content measuring device and method Download PDFInfo
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- CN113447302A CN113447302A CN202110819447.1A CN202110819447A CN113447302A CN 113447302 A CN113447302 A CN 113447302A CN 202110819447 A CN202110819447 A CN 202110819447A CN 113447302 A CN113447302 A CN 113447302A
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- 239000003245 coal Substances 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000005553 drilling Methods 0.000 claims abstract description 33
- 238000005070 sampling Methods 0.000 claims abstract description 16
- 238000005065 mining Methods 0.000 claims description 18
- 238000005259 measurement Methods 0.000 claims description 17
- 238000004364 calculation method Methods 0.000 claims description 11
- 238000000691 measurement method Methods 0.000 claims description 7
- 239000011435 rock Substances 0.000 claims description 5
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- 238000012544 monitoring process Methods 0.000 abstract description 8
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- 238000003795 desorption Methods 0.000 description 3
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- 206010024796 Logorrhoea Diseases 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
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Abstract
The invention discloses an underground coal seam gas content measuring device and a measuring method thereof, wherein the underground coal seam gas content measuring device comprises the following working steps: firstly, the method comprises the following steps: and (2) formulating a scheme, II: sampling by equipment, and III: measuring the gas quantity, IV: in contrast, the sampling of the second device mainly comprises: workstation, spacing seat, mount and drilling rod subassembly, spacing seat is installed at the top of workstation, the mount is installed to the inner wall of spacing seat. According to the invention, through the arrangement of the workbench and the servo motor, when the coal seam drilling device is used by a worker, samples are collected by drilling the coal seam, the limiting drill bit is provided with the pressure sensing module and the temperature sensing module, the temperature and the pressure in the coal seam are detected while drilling is carried out, the detected temperature and pressure are transmitted to an external display device, and after the monitoring of the temperature and the pressure is connected with the limiting drill bit, the practicability of the device is increased by facilitating the better monitoring of the internal condition of the coal seam.
Description
Technical Field
The invention relates to the technical field of gas content measuring equipment, in particular to an underground coal seam gas content measuring device and a measuring method thereof.
Background
The development of the coal mining industry enables the mining area to be larger and larger, most of the coal mining industry is underground mining, and the underground operation has serious potential safety hazard, so that underground environment approach detection is needed during mining work, for example, the gas content in a coal seam is measured, and the exceeding of the gas content can influence the mining work of the coal seam.
The coal bed gas content underground determination device and the determination method thereof in the prior art have the defects that:
1. the comparison document CN212228649U discloses a coal bed gas content underground measuring device, which comprises a device body and a measuring and controlling unit; the device body comprises a coal sample tank and a device shell, a power switch is arranged on the side surface of the device shell, and a key, an indicator lamp, a touch display screen and a coal sample tank interface are arranged at the top of the device shell; the measurement and control unit is arranged in the device shell and comprises a controller and a power supply module, the touch display screen is connected with the controller, the input end of the controller is connected with a gas desorption detector, an air pressure detection module, a temperature detection module and a key control module, the output end of the controller is connected with an indicator lamp control module, and the indicator lamp is connected with the output end of the indicator lamp control module. The device has the advantages of simple structure, reasonable design and convenient realization, can be effectively applied to the measurement of the gas content of the coal bed, reduces the measurement test links of natural desorption amount and crushing desorption amount on the ground, improves the detection efficiency of the gas content of the coal bed, has good use effect and is convenient to popularize and use, but the device has simpler measurement mode of the gas content in the coal bed, and lacks practical operation structures for the sample exploitation and sampling of the coal bed and the measurement of pressure and temperature;
2. in the prior art, a coal seam gas content underground determination device and a determination method thereof are provided; when the device is used for measuring the gas quantity, the measuring mode is simple, the gas quantity measuring accuracy is not enough, and the measuring structure is influenced.
3. In the prior art, when a coal seam is sampled, most coal samples in the coal seam are extracted in a drilling mode, so that the working stability of the device needs to be increased during sampling.
Disclosure of Invention
The invention aims to provide an underground coal seam gas content measuring device and an underground coal seam gas content measuring method, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme that the underground coal bed gas content measuring device and the underground coal bed gas content measuring method comprise the following working steps:
firstly, the method comprises the following steps: making a scheme;
II, secondly: sampling by equipment;
thirdly, the method comprises the following steps: measuring the gas quantity;
fourthly, the method comprises the following steps: and (6) comparing and summarizing.
Preferably, according to the device and the method for determining the gas content in the coal seam downhole as claimed in claim 1, the content of the scheme formulated in the first step mainly includes: when the drilling position is selected, influence ranges such as a geological structure fracture zone, mining and the like are avoided, and the influence ranges of the drilling hole visible point and the geological structure fracture zone and mining are at least more than 40 m; when the position of the pressure measuring hole is selected in the same body, influence ranges such as a geological structure fracture zone, mining and the like are avoided, and the influence ranges of the pressure measuring hole, the coal point and the geological structure fracture zone and the mining are at least more than 40 m; when 2 pressure measuring holes are arranged at the same place, the distance between the coal observing points of the two pressure measuring holes is more than 20 m.
Preferably, the step two device sampling mainly comprises: workstation, spacing seat, mount and drilling rod subassembly, spacing seat is installed at the top of workstation, the mount is installed to the inner wall of spacing seat, servo motor is installed through the mount to the inner wall of spacing seat, servo motor's output is connected with the drilling rod subassembly, the bottom of drilling rod subassembly is provided with spacing drill bit.
Preferably, the gas amount determination in the third step comprises: after the sampling work is completed through the second step, the method can be divided into two types of determination methods, one type is a direct determination method, namely, a special closed rock core sampler or a common sampler is used for extracting a coal sample after encountering a coal seam in the drilling process, gas contained in the coal sample is extracted in a laboratory, the gas dissipated in the drilling and sampling processes is added, and the quality of the sample is divided by the mass of the sample, so that the gas content of the coal seam is obtained, and the other type is a calculation method, namely, the sum of the free gas content and the adsorbed gas content of the coal seam is calculated according to the measured gas pressure and temperature of the coal seam and by combining the test of the laboratory, so that the gas content of the coal seam is obtained.
Preferably, the comparative summary in the fourth step mainly includes: comparing the two measured results of the direct measurement method and the calculation method in the third step, and judging whether the measurement of the measurement mode on the gas quantity is accurate or not according to the difference ratio between the two results.
Preferably, the connecting block is installed to the bottom of workstation, the diaphragm is installed to the inboard of connecting block, and spacing drill bit run through with the inside of diaphragm, the surface of spacing drill bit is provided with forced induction module and temperature-sensing module.
Preferably, the connecting rod is installed in the outside of connecting block, the locating lever is installed at the top of connecting rod, and the top of locating lever is connected in the bottom of workstation, the outer end of connecting rod is connected with the sliding seat, the front of sliding seat is connected with spacing slider, spacing pipe has been cup jointed to spacing slider's surface, and spacing slider sliding connection in the inner wall of spacing pipe, the base is installed to the bottom of spacing pipe.
Preferably, the interior roof and the interior diapire of spacing pipe all are connected with telescopic link assembly, telescopic link assembly's inside all is provided with spacing spring, reciprocating motor is installed to the top gomphosis of base, reciprocating motor's output is connected with the location drilling rod subassembly.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the arrangement of the workbench and the servo motor, when the coal seam drilling device is used by a worker, samples are collected by drilling the coal seam, the limiting drill bit is provided with the pressure sensing module and the temperature sensing module, the temperature and the pressure in the coal seam are detected while drilling is carried out, the detected temperature and pressure are transmitted to an external display device, and after the monitoring of the temperature and the pressure is connected with the limiting drill bit, the practicability of the device is increased by facilitating the better monitoring of the internal condition of the coal seam.
2. According to the invention, through the arrangement of the direct measurement method and the calculation method, when the coal seam gas quantity measuring device is used by a worker, the gas content of the coal seam is monitored, the two measured results are compared through the direct measurement method and the calculation method, and whether the measurement of the gas quantity by the measurement mode is accurate or not is judged through the difference ratio between the two results, so that the high-efficiency measurement efficiency of the gas is increased, and the accuracy of the measurement structure is increased.
3. According to the invention, through the arrangement of the limiting pipe and the base, when a worker uses the device, the relative connecting blocks are connected through the transverse plate, and the arrangement of the positioning rod increases the installation stability of the connecting rod and the connecting blocks.
Drawings
FIG. 1 is a perspective view of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of a structure of a spacing block according to the present invention;
FIG. 3 is a schematic cross-sectional view of a stopper tube configuration of the present invention;
FIG. 4 is a schematic flow chart of the present invention.
In the figure: 1. a work table; 2. a limiting seat; 3. a fixed mount; 4. a drill rod assembly; 5. a servo motor; 6. a limiting drill bit; 7. connecting blocks; 8. a transverse plate; 9. a pressure sensing module; 10. a temperature sensing module; 11. a connecting rod; 12. positioning a rod; 13. a sliding seat; 14. a limiting slide block; 15. a limiting pipe; 16. a base; 17. a telescopic rod assembly; 18. a limiting spring; 19. a reciprocating motor; 20. a drill rod assembly is positioned.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, fig. 2 and fig. 4, according to an embodiment of the present invention, an apparatus for downhole measuring a gas content in a coal seam and a method for measuring the gas content in the coal seam include the following steps:
firstly, the method comprises the following steps: making a scheme;
II, secondly: sampling by equipment;
thirdly, the method comprises the following steps: measuring the gas quantity;
fourthly, the method comprises the following steps: and (6) comparing and summarizing.
The content of the scheme formulated in the first step mainly comprises the following steps: when the drilling position is selected, influence ranges such as a geological structure fracture zone, mining and the like are avoided, and the influence ranges of the drilling hole visible point and the geological structure fracture zone and mining are at least more than 40 m; when the position of the pressure measuring hole is selected in the same body, influence ranges such as a geological structure fracture zone, mining and the like are avoided, and the influence ranges of the pressure measuring hole, the coal point and the geological structure fracture zone and the mining are at least more than 40 m; when 2 pressure taps are arranged at the same place, the distance between the coal-seeing points of the two pressure taps is larger than 20m, and the sampling of the second equipment mainly comprises the following steps: the drilling machine comprises a workbench 1, a limiting seat 2, a fixing frame 3 and a drilling rod assembly 4, wherein the limiting seat 2 is installed at the top of the workbench 1, the fixing frame 3 is installed on the inner wall of the limiting seat 2, a servo motor 5 is installed on the inner wall of the limiting seat 2 through the fixing frame 3, the output end of the servo motor 5 is connected with the drilling rod assembly 4, a limiting drill bit 6 is arranged at the bottom end of the drilling rod assembly 4, a connecting block 7 is installed at the bottom of the workbench 1, a transverse plate 8 is installed on the inner side of the connecting block 7, the limiting drill bit 6 penetrates through the inner part of the transverse plate 8, and a pressure sensing module 9 and a temperature sensing module 10 are arranged on the outer surface of the limiting drill bit 6;
through the setting of workstation 1 and servo motor 5, thereby the staff when using, thereby carry out the collection of sample through boring garrulous coal seam, set up through pressure sensing module 9 and temperature sensing module 10 on the spacing drill bit 6, also detect the temperature and the pressure of the inside in coal seam when boring the work, transmit to external display device on, through being connected the back with the monitoring of temperature and pressure with spacing drill bit 6, thereby be convenient for the inside condition in better monitoring coal seam increases the practicality of device.
Referring to fig. 1, 2 and 4, an embodiment of the invention provides a coal seam gas content underground measuring device and a measuring method thereof, including a connecting block 7, a limiting pipe 15 and a reciprocating motor 19, wherein an outer side of the connecting block 7 is provided with a connecting rod 11, a top of the connecting rod 11 is provided with a positioning rod 12, a top end of the positioning rod 12 is connected to a bottom of a workbench 1, an outer end of the connecting rod 11 is connected with a sliding seat 13, a front surface of the sliding seat 13 is connected with a limiting slider 14, an outer surface of the limiting slider 14 is sleeved with the limiting pipe 15, the limiting slider 14 is slidably connected to an inner wall of the limiting pipe 15, an inner top wall and an inner bottom wall of the limiting pipe 15 are both connected with a telescopic rod assembly 17, a limiting spring 18 is arranged inside the telescopic rod assembly 17, the top of a base 16 is provided with a reciprocating motor 19 in an embedded manner, an output end of the reciprocating motor 19 is connected with a positioning drill rod assembly 20, the bottom of the limiting pipe 15 is provided with a base 16;
through spacing pipe 15 and base 16's setting, the staff is when using, connect through diaphragm 8 between the relative connection piece 7, and through the setting of locating lever 12, thereby add the stability of linking pole 11 and the installation of connecting block 7, when the device drills and gets the during operation, the work of accessible reciprocating motor 19, its output drives the activity of location drilling rod subassembly 20 after the 19 circular telegram work of reciprocating motor, the messenger plays the positioning action to the holistic work of device, through limiting spring 18's setting in the telescopic link subassembly 17, rock certain cushioning effect from top to bottom to the device through its resilience, thereby add the stability of device work.
Referring to fig. 4, in an embodiment of the present invention, an apparatus and a method for downhole measuring a gas content in a coal seam are provided, where the gas content measurement in the third step includes: after the sampling work is completed through the second step, the method can be divided into two types of determination methods, one type is a direct determination method, namely, in the drilling process, a special closed rock core sampler or a common sampler is used for extracting a coal sample after encountering a coal bed, gas contained in the coal sample is extracted in a laboratory, and the gas dissipated in the drilling and sampling processes is added, and the quality of the sample is divided by the mass of the sample, so that the gas content of the coal bed is obtained, the other type is a calculation method, namely, the sum of the free gas content and the adsorbed gas content of the coal bed is calculated according to the measured gas pressure and temperature of the coal bed and by combining the test of the laboratory, so that the sum is the gas content of the coal bed, and the comparison and summary in the fourth step mainly comprises the following steps: comparing the two measured results of the direct measurement method and the calculation method in the third step, and judging whether the measurement of the measurement mode on the gas quantity is accurate or not according to the difference ratio between the two results;
through the setting of direct measurement method and calculation method, the staff monitors the gas content in coal seam when using to through to direct measurement method and calculation method, two kinds of results that record contrast, through the gap proportion between two kinds of results, judge whether above-mentioned measuring mode is accurate to the survey of gas volume, thereby add the efficiency of survey to the gas efficient, add the precision of surveying the structure
In the invention, the working steps of the device are as follows: through the arrangement of the workbench 1 and the servo motor 5, the connection of the fixing frame 3 in the limiting seat 2 and the servo motor 5 plays a stabilizing role in the work of the servo motor 5, the output end of the servo motor 5 drives the movement of the drill rod component 4 after the power-on work, and then drives the movement of the limiting drill bit 6, so as to drill the coal bed, the sample is collected by drilling and crushing the coal bed, the limiting drill bit 6 is provided with a pressure sensing module 9 and a temperature sensing module 10, the temperature and the pressure in the coal bed are detected while the drilling work is carried out, the temperature and the pressure are transmitted to an external display device, the monitoring of the temperature and the pressure are connected with the limiting drill bit 6, so that the practicability of the device is increased by better monitoring the internal condition of the coal bed, the gas content of the coal bed is monitored through a direct measuring method and a calculation method, the two measured results are compared, whether the gas quantity is accurately measured by the measuring mode is judged according to the difference proportion between the two results, so that the high-efficiency measuring efficiency of the gas is increased, the accuracy of the measuring structure is increased, the opposite connecting blocks 7 are connected through the transverse plates 8 by the arrangement of the limiting pipes 15 and the base 16, the installation stability of the connecting rods 11 and the connecting blocks 7 is increased by the arrangement of the positioning rods 12, when the device performs drilling operation, the output end of the reciprocating motor 19 drives the positioning drill rod assembly 20 to move after the reciprocating motor 19 is electrified to work, so that the positioning drill rod assembly 20 is drilled into a coal bed, the positioning effect is realized on the whole work of the device, the sliding performance of the telescopic rod assembly 17 and the limiting slide block 14 is realized in the limiting pipes 15, when the device performs drilling operation, the swinging of the workbench 1 can limit the movement of the slide block 14, make its collision telescopic link assembly 17, through limiting spring 18's setting in the telescopic link assembly 17, rock the device from top to bottom through its resilience and play certain cushioning effect to add the stability of device work.
The detailed description of the known functions and the known components is omitted in the embodiment of the disclosure, and in order to ensure the compatibility of the equipment, the adopted operation means are consistent with the parameters of the instruments on the market.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A coal seam gas content underground determination device and a determination method thereof comprise the following working steps:
firstly, making a scheme;
secondly, sampling by equipment;
thirdly, measuring the gas quantity;
fourthly, comparing and summarizing.
2. The underground coal seam gas content measuring device and the underground coal seam gas content measuring method according to claim 1, wherein the underground coal seam gas content measuring device is characterized in that: the content of the scheme formulated in the first step mainly comprises the following steps: when the drilling position is selected, influence ranges such as a geological structure fracture zone, mining and the like are avoided, and the influence ranges of the drilling hole visible point and the geological structure fracture zone and mining are at least more than 40 m; when the position of the pressure measuring hole is selected in the same body, influence ranges such as a geological structure fracture zone, mining and the like are avoided, and the influence ranges of the pressure measuring hole, the coal point and the geological structure fracture zone and the mining are at least more than 40 m; when 2 pressure measuring holes are arranged at the same place, the distance between the coal observing points of the two pressure measuring holes is more than 20 m.
3. The underground coal seam gas content measuring device and the underground coal seam gas content measuring method according to claim 1, wherein the underground coal seam gas content measuring device is characterized in that: the sampling of the second device mainly comprises the following steps: workstation (1), spacing seat (2), mount (3) and drill rod subassembly (4), spacing seat (2) are installed at the top of workstation (1), mount (3) are installed to the inner wall of spacing seat (2), servo motor (5) are installed through mount (3) to the inner wall of spacing seat (2), the output of servo motor (5) is connected with drill rod subassembly (4), the bottom of drill rod subassembly (4) is provided with spacing drill bit (6).
4. The underground coal seam gas content measuring device and the underground coal seam gas content measuring method according to claim 1, wherein the underground coal seam gas content measuring device is characterized in that: the gas quantity measurement in the third step comprises the following steps: after the sampling work is completed through the second step, the method can be divided into two types of determination methods, one type is a direct determination method, namely, a special closed rock core sampler or a common sampler is used for extracting a coal sample after encountering a coal seam in the drilling process, gas contained in the coal sample is extracted in a laboratory, the gas dissipated in the drilling and sampling processes is added, and the quality of the sample is divided by the mass of the sample, so that the gas content of the coal seam is obtained, and the other type is a calculation method, namely, the sum of the free gas content and the adsorbed gas content of the coal seam is calculated according to the measured gas pressure and temperature of the coal seam and by combining the test of the laboratory, so that the gas content of the coal seam is obtained.
5. The underground coal seam gas content measuring device and the underground coal seam gas content measuring method according to claim 1, wherein the underground coal seam gas content measuring device is characterized in that: the comparative summary in the fourth step mainly comprises the following steps: comparing the two measured results of the direct measurement method and the calculation method in the third step, and judging whether the measurement of the measurement mode on the gas quantity is accurate or not according to the difference ratio between the two results.
6. The underground coal seam gas content measuring device and the underground coal seam gas content measuring method according to claim 3, wherein the underground coal seam gas content measuring device is characterized in that: connecting block (7) are installed to the bottom of workstation (1), diaphragm (8) are installed to the inboard of connecting block (7), and spacing drill bit (6) run through with the inside of diaphragm (8), the surface of spacing drill bit (6) is provided with forced induction module (9) and temperature-sensing module (10).
7. The underground coal seam gas content measuring device and the underground coal seam gas content measuring method according to claim 6, wherein the underground coal seam gas content measuring device is characterized in that: the utility model discloses a spacing pipe (15) of connecting piece (7), connecting rod (11) is installed in the outside of connecting block (7), locating lever (12) are installed at the top of connecting rod (11), and the top of locating lever (12) is connected in the bottom of workstation (1), the outer end of connecting rod (11) is connected with sliding seat (13), the front of sliding seat (13) is connected with spacing slider (14), spacing pipe (15) have been cup jointed to the surface of spacing slider (14), and spacing slider (14) sliding connection is in the inner wall of spacing pipe (15), base (16) are installed to the bottom of spacing pipe (15).
8. The underground coal seam gas content measuring device and the underground coal seam gas content measuring method according to claim 7, wherein the underground coal seam gas content measuring device is characterized in that: the interior roof and the interior diapire of spacing pipe (15) all are connected with telescopic link subassembly (17), the inside of telescopic link subassembly (17) all is provided with spacing spring (18), reciprocating motor (19) are installed to the top gomphosis of base (16), the output of reciprocating motor (19) is connected with location drill rod subassembly (20).
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Citations (9)
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