CN104374895B - The device and method that isotope tracing study of rocks microscopic damage develops in real time - Google Patents
The device and method that isotope tracing study of rocks microscopic damage develops in real time Download PDFInfo
- Publication number
- CN104374895B CN104374895B CN201410643393.8A CN201410643393A CN104374895B CN 104374895 B CN104374895 B CN 104374895B CN 201410643393 A CN201410643393 A CN 201410643393A CN 104374895 B CN104374895 B CN 104374895B
- Authority
- CN
- China
- Prior art keywords
- rock sample
- pressure vessel
- cable wire
- rocks
- real time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention discloses the device and method that a kind of isotope tracing study of rocks microscopic damage develops in real time, comprise stationary installation and permeability experimental facility, stationary installation comprises cable wire, screw coupling, aluminum ring, rock sample is positioned at aluminum ring, the two ends of aluminum ring are connected with screw coupling respectively, the middle part of each screw coupling is connected with cable wire, and the head of cable wire is provided with level ball; Permeability experimental facility comprises the first pressure vessel for the radioisotopic chemical test solution of splendid attire and the second pressure vessel, one end of rock sample is connected with the first pressure vessel, the other end of rock sample is connected with the second pressure vessel, first pressure vessel and the second pressure vessel have permeable pressure head, and the first pressure vessel is connected with supercharging device with the second pressure vessel simultaneously.The present invention can the propagation of internal cracks situation of study of rocks more accurately, avoids a large amount of to repeat experiment simultaneously, improves work efficiency.
Description
Technical field
The present invention relates to the device and method that a kind of isotope tracing study of rocks microscopic damage develops in real time, belong to rock field.
Background technology
The destruction of the large-scale Practical Project that rock mass is correlated with, often due to the germinating of a large amount of micro-and meso-cracks of its inner rock mass, development, through and cause the appearance of macroscopic cracking and cause.Therefore, the crack initiation studying micro-crack in rock mass is developed and has important use value and engineering significance with the mutual relationship of lesion development.
See angle from thin, the destructive process under the effect of rock outer load is from the microscopical structure internal injury of rock, comprises the crack initiation of crackle, formation, development, through and macroscopic cracking form several process.In the mesoscopic numerical test of rock, a lot of valuable achievement in research has been made since the twenties in 20th century plays lot of domestic and international scholar.But the main acoustic emission of research method experimentally, scanning electron-microscopy and CT technology.Acoustic emission can continuously, the generation of hard brittle material internal tiny crack and expansion under monitors load effect in real time, but fail to reflect rock interior microcrack initiation in whole loading procedure, expansion, nucleation and through three dimensions evolutionary process.Scanning electron-microscopy is a kind of very vivid and study the instrument of crack initiation and propagation intuitively, but deficiency to observe the crackle of surface of test piece; Adopt x-ray ct technology lossless detection rock interior structure and Cracks Evolution process, but it is visual in image not, domestic research mainly concentrates in the analysis of CT number and theoretical research, although can set up the Cracks Evolution reconstruct of rock failure mechanism of rock process, reconstruction model is different actual conditions after all.And to great many of experiments and data analysis be carried out, to closer to actual conditions.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides the device and method that a kind of isotope tracing study of rocks microscopic damage develops in real time, can the propagation of internal cracks situation of study of rocks more accurately, avoid simultaneously and a large amount of repeat experiment, improve work efficiency.
Technical scheme: for solving the problems of the technologies described above, the device that isotope tracing study of rocks microscopic damage of the present invention develops in real time, comprise stationary installation and permeability experimental facility, stationary installation comprises cable wire, screw coupling, aluminum ring, rock sample is positioned at aluminum ring, and the two ends of aluminum ring are connected with screw coupling respectively, and the middle part of each screw coupling is connected with cable wire, cable wire is by driving screw coupling thus stretching rock sample, and the head of cable wire is provided with level ball; Permeability experimental facility comprises the first pressure vessel for the radioisotopic chemical test solution of splendid attire and the second pressure vessel, one end of rock sample is connected with the first pressure vessel, the other end of rock sample is connected with the second pressure vessel, first pressure vessel and the second pressure vessel have permeable pressure head, and the first pressure vessel is connected with supercharging device with the second pressure vessel simultaneously.
As preferably, described rock sample is bonded on aluminum ring by dung, and the both sides of rock sample are provided with band.
As preferably, described dung and band are epoxy resin.
Based on an experimental technique for the device that above-mentioned isotope tracing study of rocks microscopic damage develops in real time, comprise the following steps:
(1) rock sample of fine texture is first prepared, by cementing agent and band, rock sample is firmly fixed on aluminum ring, by applying pulling force at cable wire, the axle center of cable wire and rock sample is located along the same line, and permeability experimental facility is connected;
(2) supercharging device is passed through, under certain pressure, add the radioisotopic chemical test solution with fixed concentration to rock sample, through after a period of time, measure radioisotopic position and quantizating index, to determine the Crack Extension situation in corresponding moment rock sample;
(3) pressure of supercharging device is changed, repeat experimental procedure (2), the radioisotopic chemical test solution with fixed concentration is added to rock sample, through after a period of time, measure radioisotopic position and quantizating index, to determine the Crack Extension situation in corresponding moment rock sample.
As preferably, the order of the pressure change of described supercharging device is 0Mpa, 1MPa, 2MPa, 4MPa, 4.5MPa, 5MPa, 6MPa.
Beneficial effect: the device that isotope tracing study of rocks microscopic damage of the present invention develops in real time, by cementing agent, rock sample is firmly fixed on aluminum ring, by the real-time adjustment of level ball by the pulling force of cable wire and rock sample concentric, apparatus structure is ingenious; The method of the device that isotope tracing study of rocks microscopic damage develops in real time, adopt radioactivity determination not by the interference of other non-radioactive substance, the separating substances step of many complexity can be omitted, radioactive isotope is utilized to discharge the strong r ray of penetration power, result is obtained at rock sample outer surface measuring, method is easy, and efficiency is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is crack of the present invention passage prototype figure;
Accompanying drawing: 1. cable wire, 2. screw coupling, 3. ring, 4. rock sample, 5. band, 6. dung, 7. voltage table, 8. fills the container of isotope chemistry reagent, 9. supercharging device.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As depicted in figs. 1 and 2, the device that isotope tracing study of rocks microscopic damage of the present invention develops in real time, comprise stationary installation and permeability experimental facility, stationary installation comprises cable wire 1, screw coupling 2, aluminum ring 3, rock sample 4 is positioned at aluminum ring 3, and the two ends of aluminum ring 3 are connected with screw coupling 2 respectively, and the middle part of each screw coupling 2 is connected with cable wire 1, cable wire 1 is by driving screw coupling 2 thus stretching rock sample 4, and the head of cable wire 1 is provided with level ball; Permeability experimental facility comprises the first pressure vessel 8 and the second pressure vessel 10 for the radioisotopic chemical test solution of splendid attire, one end of rock sample 4 is connected with the first pressure vessel 8, the other end of rock sample 4 is connected with the second pressure vessel 10, first pressure vessel 8 and the second pressure vessel 10 have permeable pressure head, first pressure vessel 8 and the second pressure vessel 10 are connected with supercharging device 9 simultaneously, the first pressure vessel 8 and be provided with multiple tensimeter 7 between the second pressure vessel 10 and supercharging device 9.
In the present invention, described rock sample is bonded on aluminum ring 3 by dung 6, and the both sides of rock sample are provided with band 5, and described dung 6 and band 5 are ring 3 epoxy resins.
Based on an experimental technique for the device that above-mentioned isotope tracing study of rocks microscopic damage develops in real time, comprise the following steps:
(1) rock sample of fine texture is first prepared, by cementing agent and band 5, rock sample is firmly fixed on aluminum ring 3, by applying pulling force at cable wire 1, cable wire 1 is located along the same line with the axle center of rock sample 4, and permeability experimental facility is connected;
(2) by supercharging device 9, under 0Mpa pressure, add the radioisotopic chemical test solution with fixed concentration to rock sample, through after a period of time, measure radioisotopic position and quantizating index, to determine the Crack Extension situation in corresponding moment rock sample 4;
(3) pressure 1MPa, 2MPa, 4MPa, 4.5MPa, 5MPa, 6MPa of supercharging device 9 is changed successively, repeat experimental procedure (2), the radioisotopic chemical test solution with fixed concentration is added to rock sample, through after a period of time, measure radioisotopic position and quantizating index, to determine the Crack Extension situation in corresponding moment rock sample 4.
In the present invention, fill isotope in first pressure vessel 8 and the second pressure vessel 10 and follow the tracks of chemical test solution, conventional reagent of following the tracks of has carbon containing 14 (14C), S35 (35S), P 32 (32P), iodine 131 (131I), hydrogen 3 (3H) etc.Theoretical foundation of the present invention is radioelement decay principle, mass conservation theorem and the seepage principle of water in rock.Because the seepage flow of liquid mainly carries out in the crack and space of rock mass, the flowing especially in crack is more concentrated, determines the initial damage situation of rock with this.The concentration of tracer isotope in the first pressure vessel 8 and the second pressure vessel 10 solution will be kept in experimentation constant, in different loading procedures, every certain hour, measure radioisotopic position and quantizating index, to determine the Crack Extension situation in corresponding moment rock sample 4, from the thin damage evolution law seeing angle analysis rock.Radioactivity determination is not by the interference of other non-radioactive substance, the separating substances step of many complexity can be omitted, utilize some radioactive isotope to discharge the strong r ray of penetration power, obtain result at rock sample 4 outer surface measuring, this just enormously simplify experimentation.
The key point of the present invention's experiment is: will have good cohesive force between a rock sample and fixture, two pulling force applied by cable wire 1 must with rock sample concentric.This step be by cable wire 1 below level ball control, adjust shaft core position before applying acting force and make bubble centering balance in level ball, apply in acting force process, as found, in level ball, bubble departs from equilibrium position, adjustment make the pulling force that applied by cable wire 1 must with rock sample concentric.The pressure differential at adjustment rock sample two ends, adds with radioisotopic chemical test solution to rock sample, then tests radioelement in the distribution situation of rock interior, comprises radioisotopic position finding and radioisotopic quantitative determination.Because the rock sample 4 that physical property is good, the inside packing of its original state is high, microfissure is little, depends primarily on the size of microfissure in loading procedure, shape and be communicated with situation containing the perviousness of radioisotopic chemical test solution in rock medium.Because liquid seepage mainly carries out in the crack and space of rock mass, especially relatively concentrate as shown in Figure 2 in the flowing in crack.The initial damage situation of rock is determined with this.The concentration of tracer isotope in solution will be kept in experimentation constant, take a morsel before adding osmotic pressure at every turn and such as measure 5ml test solution with graduated cylinder, by liquid flashing counting measuring wherein content of radioactive isotopes, during concentration change, suitably increase or reduce solute or solution.In different loading procedures, every certain hour, measure radioisotopic position and quantizating index, to determine the Crack Extension situation in rock, such as measure radioisotopic position and quantizating index when stress is at 0Mpa, 1MPa, 2MPa, 4MPa, 4.5MPa, 5MPa, 6MPa, to determine the Crack Extension situation in corresponding moment rock sample 4, from the thin damage evolution law seeing angle analysis rock.Radioactivity determination by the interference of other non-radioactive substance, can not omit the separating substances step of many complexity, utilize radioactive isotope to discharge the strong r ray of penetration power, obtain result at rock sample 4 outer surface measuring.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. the device that develops in real time of an isotope tracing study of rocks microscopic damage, it is characterized in that: comprise stationary installation and permeability experimental facility, stationary installation comprises cable wire, screw coupling, aluminum ring, rock sample is positioned at aluminum ring, the two ends of aluminum ring are connected with screw coupling respectively, the middle part of each screw coupling is connected with cable wire, and cable wire is by driving screw coupling thus stretching rock sample, and the head of cable wire is provided with level ball; Permeability experimental facility comprises the first pressure vessel for the radioisotopic chemical test solution of splendid attire and the second pressure vessel, one end of rock sample is connected with the first pressure vessel, the other end of rock sample is connected with the second pressure vessel, first pressure vessel and the second pressure vessel have permeable pressure head, and the first pressure vessel is connected with supercharging device with the second pressure vessel simultaneously.
2. the device that develops in real time of isotope tracing study of rocks microscopic damage according to claim 1, is characterized in that: described rock sample is bonded on aluminum ring by dung, and the both sides of rock sample are provided with band.
3. the device that develops in real time of isotope tracing study of rocks microscopic damage according to claim 2, is characterized in that: described dung and band are epoxy resin.
4. an experimental technique for the device developed in real time based on the isotope tracing study of rocks microscopic damage described in any one of claims 1 to 3, is characterized in that, comprise the following steps:
(1) rock sample of fine texture is first prepared, by cementing agent and band, rock sample is firmly fixed on aluminum ring, by applying pulling force at cable wire, the axle center of cable wire and rock sample is located along the same line, and permeability experimental facility is connected;
(2) supercharging device is passed through, under certain pressure, add the radioisotopic chemical test solution with fixed concentration to rock sample, through after a period of time, measure radioisotopic position and quantizating index, to determine the Crack Extension situation in corresponding moment rock sample;
(3) pressure of supercharging device is changed, repeat experimental procedure (2), the radioisotopic chemical test solution with fixed concentration is added to rock sample, through after a period of time, measure radioisotopic position and quantizating index, to determine the Crack Extension situation in corresponding moment rock sample.
5. the experimental technique of device that develops in real time of isotope tracing study of rocks microscopic damage according to claim 4, is characterized in that: the order of the pressure change of described supercharging device is 0Mpa, 1MPa, 2MPa, 4MPa, 4.5MPa, 5MPa, 6MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410643393.8A CN104374895B (en) | 2014-11-13 | 2014-11-13 | The device and method that isotope tracing study of rocks microscopic damage develops in real time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410643393.8A CN104374895B (en) | 2014-11-13 | 2014-11-13 | The device and method that isotope tracing study of rocks microscopic damage develops in real time |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104374895A CN104374895A (en) | 2015-02-25 |
| CN104374895B true CN104374895B (en) | 2015-11-18 |
Family
ID=52553940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410643393.8A Expired - Fee Related CN104374895B (en) | 2014-11-13 | 2014-11-13 | The device and method that isotope tracing study of rocks microscopic damage develops in real time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104374895B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823715A (en) * | 2016-03-18 | 2016-08-03 | 山东大学 | Rock mass seepage path observation device based on isotopic tracing technology and application method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2452023Y (en) * | 2000-11-29 | 2001-10-03 | 中国科学院武汉岩土力学研究所 | Digital real-time multi-direction observation recording analyzer during the whole process of crack propagation |
| CN102589672A (en) * | 2012-01-12 | 2012-07-18 | 中国科学院地质与地球物理研究所 | Method for continuously measuring acoustic wave velocity in rock compressed crack propagation measurement process |
| CN102879476A (en) * | 2012-10-11 | 2013-01-16 | 中山大学 | Multi-scale measurement system for rock rheological damages |
| CN103439189A (en) * | 2013-08-22 | 2013-12-11 | 中国科学院武汉岩土力学研究所 | Rock biaxial compression micromechanics testing device under stress-water current-chemical coupling actions |
-
2014
- 2014-11-13 CN CN201410643393.8A patent/CN104374895B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2452023Y (en) * | 2000-11-29 | 2001-10-03 | 中国科学院武汉岩土力学研究所 | Digital real-time multi-direction observation recording analyzer during the whole process of crack propagation |
| CN102589672A (en) * | 2012-01-12 | 2012-07-18 | 中国科学院地质与地球物理研究所 | Method for continuously measuring acoustic wave velocity in rock compressed crack propagation measurement process |
| CN102879476A (en) * | 2012-10-11 | 2013-01-16 | 中山大学 | Multi-scale measurement system for rock rheological damages |
| CN103439189A (en) * | 2013-08-22 | 2013-12-11 | 中国科学院武汉岩土力学研究所 | Rock biaxial compression micromechanics testing device under stress-water current-chemical coupling actions |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823715A (en) * | 2016-03-18 | 2016-08-03 | 山东大学 | Rock mass seepage path observation device based on isotopic tracing technology and application method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104374895A (en) | 2015-02-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203502388U (en) | Rock damage and penetration testing device | |
| CN104729948B (en) | Coal containing methane gas aqueous vapor two phase fluid flow experimental system and method | |
| CN109827848B (en) | Oil and gas reservoir fracturing fracture expansion simulation dynamic monitoring system and method | |
| CN106323841A (en) | Device for measuring permeability of ultra-low permeability rocks under action of triaxial stress | |
| CN103592186A (en) | Device and experimental method for researching shale hydraulic-fracturing damage evolution under true triaxial loading condition | |
| CN202975005U (en) | Rock core holder | |
| CN105403505A (en) | Cementing interface bonding strength testing device and method | |
| CN111579464A (en) | Seepage anisotropy test device and method suitable for triaxial testing machine | |
| CN105043891B (en) | A kind of muddy water cleavage fracture stress test device and method for shield tunnel | |
| CN107255700B (en) | Coal bed gas well discharge and production process pulverized coal output simulation test device and test method thereof | |
| CN103868799A (en) | Rock mechanical characteristic analyzer for non-conventional oil-gas reservoir stratum | |
| CN108051643A (en) | Multipair dynamic monitoring displacement system of multi-functional long cores radial direction | |
| CN105424505B (en) | A kind of apparatus and method for meeting different sized samples triaxial shear tests | |
| CN108844850A (en) | Shale adsorption-desorption and decompression exploitation simulator and method based on dynamic equilibrium | |
| CN105486843A (en) | Soil body permeation-adsorption tester and testing method thereof | |
| CN207164042U (en) | Coal bed gas well mining process coal dust output simulating test device | |
| CN203869959U (en) | Analysis meter for rock mechanics characteristics of unconventional oil and gas reservoir | |
| CN207662827U (en) | A kind of clamper based on neutron photography study of platform stand under load rock unsaturated seepage | |
| CN105004509A (en) | Water and mud outburst test device for tectonic fracture filling structure | |
| CN105547831A (en) | Model test method for measuring deformation property of rock mass containing complex structural faces | |
| CN206161492U (en) | Can realize becoming penetrant unit of water pressure effect | |
| CN107121354A (en) | A kind of device and its application method for testing Karst grouting material dispersion resistance matter under water | |
| CN110219625A (en) | Flood pot test system based on 3D printing three-dimensional fracture-pore reservoir model | |
| CN104964880A (en) | Industrial computer tomograghy (CT)-based heating seepage true-triaxial test box | |
| CN104374895B (en) | The device and method that isotope tracing study of rocks microscopic damage develops in real time |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20181113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |