CN102809574B - Coal petrography multiple physical field coupling proving installation and using method thereof - Google Patents
Coal petrography multiple physical field coupling proving installation and using method thereof Download PDFInfo
- Publication number
- CN102809574B CN102809574B CN201210268641.6A CN201210268641A CN102809574B CN 102809574 B CN102809574 B CN 102809574B CN 201210268641 A CN201210268641 A CN 201210268641A CN 102809574 B CN102809574 B CN 102809574B
- Authority
- CN
- China
- Prior art keywords
- gas
- coal
- plunger
- cylindrical shell
- test specimen
- 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.)
- Active
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of coal petrography multiple physical field coupling proving installation and using method thereof, it forms an airtight cylindrical shell by top cover, cylindrical shell and chassis; Post chamber and temperature sensor is provided with in top cover; Post is provided with plunger in chamber, is furnished with head tank in cylindrical shell, and head tank inside is provided with air bag and convex rubber piston; Air bag is connected with external high pressure source of the gas; The gas line for inflating to cylindrical shell is provided with in plunger; Install calibrate AE sensor in rubber piston, calibrate AE sensor is connected with external acoustic emission acquisition system; Exhausr port is established on chassis and connects gas differential pressure transmitter, mass-flow gas meter and gas data Acquisition Instrument; Heating wire is arranged in chassis.The present invention not only can be recorded in real time at coal test piece deformation and acoustic emission activity thereof under different temperatures, stress state, can also carry out the attached and desorption process of coal-aspiration, and by the coal test specimen microscopical structure feature of CT technology quantitative visualization.
Description
Technical field
The present invention relates to a kind of proving installation meeting the grand microscopical structure change of rock, particularly relate to coal petrography multiple physical field coupling proving installation.
Background technology
High-ground stress on deepen coal resource recovery process medium and deep stratum, high-temperature and high pore pressure are the principal elements affecting mine safety exploitation, are particularly in minery territory rock mass and are always subject to temperature field, seepage field and stress field coupling impact.Be embodied in that coal body is converted into bidirectional stress from triaxial stress state, the porosity of coal body, permeability, thermal conduction capability change thereupon.After excavation, coal-bed gas can flow to minery territory simultaneously, not only changes the initial pore pressure in coal seam, also changes coal seam pore texture.In addition the change of gas porous flow field also can affect stratum heat flow field, affects Stress Field Distribution with temperature stress form, can affect gas porous flow field again simultaneously.It should be noted that, Complicated Pore Structures in coal also adsorbs a large amount of gas, adsorption gas desorb all can be made to become free state after the rising of environment temperature or the reduction of coal pore pressure, this process not only makes matrix of coal Surface Physical Chemistry change of properties, also cause pore pressure again to raise, further affect coal pore texture, also can change free gas seepage field.Deep coal mining must destroy the mobile equilibrium system that Coalbed Gas Seepage field, Temperature Field and stress field form, and only in certain hour and spatial dimension, whole coal-gas system just can be made again to reach mobile equilibrium new between multiple physical field by quality and energy exchange processes.
Therefore, the special mechanical behavior that research deep fractures shows under multi-field coupling effects in complicated geological environment, see clearly mutual relationship and the temporal and spatial evolution thereof of Excavation damage zone coal body physico-mechanical properties and digging process, the multiple physical field coupling effect analyzing excavation damage zone, coal seam causes calamity response, is the key problem solving coal and gas prominent accident in deep mining.
At present, most of research method normally evaluates coal test specimen outside surface deflection and macroscopical permeability variation in physical coupling mechanism.Macroscopic physical character by means of only coal is difficult to explaination coal petrography anisotropy deformation rule, opening with closed especially for crack in matrix of coal regional area.CT technology relies on lossless decomposition feature can quantitatively reconstruct the advantages such as scanning object microscopical structure in recent years, has been widely used in the rock-fluid coupled problem in research coal safe working and coal-seam gas industrial circle.Be not difficult to find that these CT pick-up units only consider that coal test specimen is in static pressure adsorbed gas, fail to consider that coupling of multiple physics effect affects texture of coal.Workplace is in the change of mining influence stress in coal bed state and Coalbed Gas Seepage field and thermo parameters method zone-transfer to be changed, and all will significantly impact the mechanical property of coal.Therefore design a kind of Appropriate application CT scan technology, in laboratory, realize coal body microscopical structure damage development and extraction relevant information in simulation coal seam macroscopic destruction, gas migration process is the subject matter that the present invention will solve.
Summary of the invention
The present invention seeks to invent a kind of coal petrography multiple physical field coupling proving installation, this device is pressing close to Appropriate application CT scan technology under working condition as far as possible, coal-gas train can be tested under temperature field, seepage field and stress field coupling, coal body microscopical structure change procedure, meets the acquisition function of many physical parameters data in coal-gas system change process.
A kind of coal petrography multiple physical field coupling proving installation, is characterized in that, it forms an airtight cylindrical shell by top cover, cylindrical shell and chassis; Be provided with post chamber in described top cover, install one in post chamber for applying the plunger of axle pressure to coal test specimen, be arranged symmetrically with four head tanks in inner barrel, each head tank inside all arranges an air bag and a convex rubber piston; Four air bags are equipped with the gas line be connected with external high pressure source of the gas; The gas line for inflating to cylindrical shell is provided with in plunger; The two ends of described rubber piston are provided with hole, are provided with calibrate AE sensor in hole, and the FPDP on the wire connecting base plate of calibrate AE sensor is transferred to external acoustic emission acquisition system; Exhausr port is established on described chassis, exhausr port installs emptying valve, and connect gas differential pressure transmitter, mass-flow gas meter and gas data Acquisition Instrument; Heating wire is arranged in chassis; In addition, in top cover, temperature sensor is provided with; Top cover and chassis outside surface are provided with heat-insulation layer.
Head tank in above-described cylindrical shell and cylindrical shell adopts x-ray when can meet CT scan to penetrate coal test specimen and requires, has again enough rigidity to meet the carbon fibre material of mechanical test.
In order to confined pressure in plunger energy automatic compensating cylindrical shell can be made to raise the out-of-balance force caused, the structure of above-mentioned plunger is made up of three, upper, middle and lower variable diameters right cylinder, and plunger stage casing diameter is greater than epimere and hypomere diameter.Wherein, the cross-sectional area of plunger hypomere equal stage casing sectional area deduct epimere sectional area after remaining annular cross-sectional area, stage casing part forms piston in post chamber, makes post chamber form upper and lower two annuluses, ring cavity and lower ring cavity on abbreviation; The lower diameter in post chamber and upper diameter respectively with hypomere diameter and the epimere diametric fit of plunger, plunger axis position is provided with the gas line being communicated with cylinder lumen and the second high-pressure air source, be provided with the airway that cylindrical hypomere bottom surface is communicated with upper ring cavity on the cylinder, this airway is communicated with the inner chamber of cylindrical shell and upper ring cavity; In addition, also have pipeline to run through plunger stage casing and hypomere, be communicated with cylinder lumen and upper ring cavity.
For the ease of installing, top cover upper prop chamber diameter and plunger stage casing equal diameters, install a ring set on top, post chamber after loading plunger.After plunger inserts top cover post chamber, a ring set is nested in plunger epimere, and is fixed on top cover upper prop chamber.
In order to ensure the impermeability of top cover and plunger, in the middle part of plunger, on ring set and lower prop chamber wall, be provided with O-ring seal.
The using method of above-mentioned coal petrography multiple physical field coupling proving installation is:
The first step: coal cinder is processed into design size, and surface smoothness meets the rectangular parallelepiped test specimen of ISRM's proposed standard; Respectively along parallel, vertical coal test specimen axis direction at its surface mount foil gauge and temperature compensation sheet, foil gauge wire is connected to chassis-date interface, forms this electric bridge of 1/4 Huitong with peripheral hardware strain data Acquisition Instrument; Coal test specimen is placed in the center on chassis, seal group cartridge chassis and cylindrical shell;
Second step: connect temperature sensor and temperature display watch in top cover, installs top cover temperature sensor, its wire is connected external temperature indicator; Respectively four air bags are inserted in head tank; The pipeline of peripheral hardware source of the gas connects each air bag through top cover; By nested for rubber piston protruding end enter in head tank, and with the balloon contacts of inside; Again calibrate AE sensor is arranged in the hole at each convex rubber piston two ends; Finally by four head tank symmetrical placement between coal test specimen and cylindrical shell;
3rd step: be tightly connected top cover and cylindrical shell, and plunger is connected to hydraulic hand-pump; And at top cover and chassis outer wrap heat-insulation layer;
4th step: device is fixed on CT scan platform; First CT scan is carried out along coal test specimen axis from bottom to top full-scale; Writing scan data;
And then to giving chassis heating wire energising, open acoustic emission system and strain acquisition system, Real-time Collection monitoring coal test piece deformation amount and acoustic emission activity situation thereof simultaneously;
When top cover temperature sensor displays temperature value is equal with chassis temperature, coal test specimen temperature reaches setting value; According to coal test specimen cubic deformation situation, then CT full-size scanning is carried out to coal test specimen; Writing scan data;
5th step: the high pressure peripheral hardware source of the gas opening cylindrical shell, closing high-pressure air source after making to reach setting value with reference to cylinder pressure, after gas in the jar is in stable condition, injecting cylindrical shell with reference to gas in the jar by regulating reduction valve; Through after a period of time, after coal test specimen cubic deformation amount and gas pressure transmitter monitor cylindrical shell internal gas pressure value change balance and stability, illustrate that coal test specimen has been in adsorption equilibrium state;
6th step: simultaneously open the high-pressure air source connecting air bag, regulates reduction valve respectively to two groups of air bag gas injections, promotes convex rubber piston and apply two to unequal intermediate principal stress and least principal stress to coal test specimen after air bag dilatational strain;
When keeping gasbag pressure constant, manual adjustments hydraulic pump adopts step load mode, applies axial stress to coal test specimen; After coal test piece deformation and cylindrical shell gas pressure change are stablized, full-scale CT scan is carried out to coal test specimen; Writing scan data;
7th step: according to different tests test request, opens emptying valve under different stress level and temperature conditions, gas in release cylindrical shell; Gas differential pressure transmitter and mass-flow gas meter real time record gas discharge process in the process.
Central idea of the present invention is the geologic condition according to resample area, coal test specimen after adsorption gas balance is applied to three-dimensional stress and the temperature of corresponding coal seam reservoirs, it is made to return to original occurrence status, by changing the stress state excavation simulation uninstall process of coal test specimen, the grand microscopical structure change information of real time record coal body.
This proving installation not only can be recorded in real time at coal test piece deformation and acoustic emission activity thereof under different temperatures, stress state, can also carry out the attached and desorption process of coal-aspiration, and by the coal test specimen microscopical structure feature of CT technology quantitative visualization.Be particularly useful for excavation simulation to country rock bulk damage destructive process.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A-A view of Fig. 1.
Fig. 3 is inner barrel 1/4 structural upright schematic diagram of the present invention.
In figure: 1-coal test specimen; 2-foil gauge; 3-rubber piston; 4-heating wire; 5-cylindrical shell; 6-head tank; 7-calibrate AE sensor; 8-air bag; 9-chassis; 10-mass-flow gas meter; 11-air valve; 12-gas differential pressure transmitter; 13-temperature controller; 14-first high-pressure air source; 15-reduction valve; 16-plunger; 17-gas reference cylinder; 18-second high-pressure air source; 19-temperature sensor; 20-temperature display watch, 21-strain data Acquisition Instrument; 22-acoustic emission acquisition system; 23-heat-insulation layer; 24-third high pressurized air source; 25-top cover; 26-support; 27-gas data Acquisition Instrument; 28-ring set; 29-O-ring seal.
Embodiment
A kind of coal petrography multiple physical field coupling proving installation as shown in Figure 1, it forms an airtight cylindrical shell by top cover 25, cylindrical shell 5 and chassis 9; Be provided with post chamber in described top cover 25, install one in post chamber for applying the plunger 16 of axle pressure to coal test specimen, arrange four head tanks 6 at cylindrical shell 5 internal symmetry, each head tank 6 inside all arranges an air bag 8 and a convex rubber piston 3; Each air bag 8 is equipped with the gas line be connected with external high pressure source of the gas, and wherein symmetrical air bag 8 connects third high pressurized air source 24, and the air bag 8 of front and back symmetry connects the first high-pressure air source 14, and source outlet pressure controls by reduction valve 15, as shown in Figure 2; Be provided with for the gas line to the gas injection of cylindrical shell 5 inner chamber in plunger 16, this gas line be communicated with extraneous gas with reference to cylinder 17 and the second high-pressure air source 18; The two ends of described rubber piston 3 are provided with circular opening, are provided with calibrate AE sensor 7 in hole, and the wire of calibrate AE sensor 7 is connected to the FPDP on chassis 9, and acoustic emission data are transferred to external acoustic emission acquisition system 22; The exhausr port on described chassis 9 installs emptying valve 11, and connects gas differential pressure transmitter 12, mass-flow gas meter 10 and gas data Acquisition Instrument 27; Also be furnished with heating wire 4 in chassis 9, heating wire 4 connects external temperature controller 13; In addition, be provided with temperature sensor 19 in top cover 25, temperature sensor 19 connects external temperature display watch 20; Top cover 25 and chassis 9 outside surface are provided with heat-insulation layer 23.
In order to confined pressure in plunger 16 energy automatic compensating cylindrical shell can be made to raise the out-of-balance force caused, the structure of above-mentioned plunger 16 is made up of three, upper, middle and lower variable diameters right cylinder, and plunger stage casing diameter is greater than epimere and hypomere diameter.Wherein, the cross-sectional area of plunger 16 hypomere equal stage casing sectional area deduct epimere sectional area after remaining annular cross-sectional area, stage casing part forms piston in post chamber, makes post chamber form upper and lower two annuluses, ring cavity and lower ring cavity on abbreviation; The lower diameter in post chamber and upper diameter respectively with hypomere diameter and the epimere diametric fit of plunger 16, plunger 16 axial location is provided with the gas line being communicated with cylindrical shell 5 inner chamber and the second high-pressure air source 18, be provided with the airway that cylindrical hypomere bottom surface is communicated with upper ring cavity on the cylinder, this airway is communicated with the inner chamber of cylindrical shell 5 and upper ring cavity; In addition, also have pipeline to run through plunger 16 stage casing and hypomere, be communicated with cylindrical shell 5 inner chamber and upper ring cavity.When the second high-pressure air source 18 is in cylindrical shell 5 during gas injection, cylindrical shell 5 inner chamber is equal with pressed on ring intracavity gas pressure, again because plunger 16 hypomere sectional area is equal with its top, stage casing annular cross-sectional area, ensure that plunger 16 is in stress balance state, both there will not be cylindrical shell 5 internal gas pressure to raise and plunger 16 had been ejected cylindrical shell 5, and also met and axle pressure is applied to coal test specimen 1; When applying axle pressure, connect hydraulic hand-pump on plunger 16 top, the contact of plunger 16 bottom surface is on coal test specimen 1 top.
For the ease of installing, plunger 16 hypomere being embedded the lower prop chamber of top cover 25, installing a ring set 28 at plunger 16 epimere, sealing is fixed on the upper prop chamber wall of top cover 25.
In order to ensure the impermeability of top cover 25, be equipped with O-ring seal 29 in piston 16 stage casing and upper and lower ring cavity.
As seen from the figure, this proving installation is also provided with support 26, plays a supportive role when transverse horizontal is placed in CT scanner.
Head tank 6 in above-described cylindrical shell 5 and cylindrical shell should adopt x-ray when can meet CT scan to penetrate coal test specimen, have enough rigidity to meet mechanical test requirement again, such as carbon fibre material.
The using method of above-mentioned coal petrography multiple physical field coupling proving installation is:
The first step: coal cinder is processed into size is suitable, surfacing, meets the rectangular parallelepiped test specimen that ISRM recommends.Respectively along parallel, vertical coal test specimen 1 axis direction at its surface mount foil gauge 2 and temperature compensation sheet, foil gauge wire connects peripheral hardware strain data Acquisition Instrument 21 by chassis-date interface and forms this electric bridge of 1/4 Huitong.Coal test specimen 1 is placed in the center on chassis 9, assemble chassis 9 and cylindrical shell 5, guarantee connecting portion good seal.
Second step: the temperature sensor 19 of connection top cover, is connected to external temp indicator gauge 20 by its wire.Respectively four air bags 8 are inserted in head tank 6.The pipeline of the first high-pressure air source 14 connects each air bag 8 through top cover 25.By nested for rubber piston 3 enter in head tank 6, and to contact with the air bag 8 of inside, then calibrate AE sensor 7 be arranged in the hole at each convex rubber piston 3 two ends.Finally by four head tank 6 symmetrical placement between coal test specimen 1 and cylindrical shell 5.
3rd step: be tightly connected top cover 25 and cylindrical shell 5, and plunger 16 is connected to hydraulic hand-pump;
4th step: after above-mentioned assembling parts, at top cover 25 and chassis 9 outer wrap heat-insulation layer 23.Device is fixed on CT scan platform.First to the full-scale CT scan that coal test specimen 1 carries out from bottom to top; And then heating wire 4 is energized, open acoustic emission acquisition system 22 and strain data Acquisition Instrument 21, Real-time Collection monitoring coal test specimen 1 (thermal expansion) deflection and its acoustic emission activity simultaneously; When temperature sensor 19 displays temperature value is identical with temperature controller 13 temperature, can think that coal test specimen 1 now reaches setting value.According to coal test specimen 1 cubic deformation different phase, then CT full-size scanning is carried out to it.
5th step: close emptying valve 11, open the second high-pressure air source 18, regulates reduction valve 15 to make gaseous tension in gas reference cylinder 17 close the second high-pressure air source 18 after reaching setting value.Gas reference cylinder 17 gas is injected cylindrical shell 5 inner chamber by plunger 16 gut line.After coal test specimen 1 cubic deformation amount and gas differential pressure transmitter 12 monitor cylindrical shell internal gas pressure value stabilization, can think that coal test specimen 1 has been in adsorption equilibrium state.
6th step: simultaneously open the first high-pressure air source 14 and third high pressurized air source 24, adjustment reduction valve 15 gives the gas injection of two groups of air bags 8 respectively according to setting value, promotes convex rubber piston 3 pairs of coal test specimens 1 and apply two to unequal intermediate principal stress and least principal stress after air bag 8 dilatational strain.Keep air bag 8 pressure constant, manual adjustments hydraulic pump adopts step load mode, applies axial stress to coal test specimen 1.After coal test specimen 1 is out of shape and cylindrical shell 5 gas pressure change is stable, full-scale CT scan is carried out to coal test specimen 1.
7th step: according to test request, emptying valve 11 can be opened under different stress level and temperature conditions, discharge cylindrical shell 5 and coal test specimen 1 internal gas, gaseous tension and data on flows in gas differential pressure transmitter 12 and mass-flow gas meter 10 Real-time Collection stress-relief process.
Claims (5)
1. a coal petrography multiple physical field coupling proving installation, is characterized in that, it forms a closed barrel by top cover, cylindrical shell and chassis; Wherein: in described top cover, be provided with post chamber, install one in post chamber for applying the plunger of axle pressure to coal test specimen, be arranged symmetrically with four head tanks in inner barrel, each head tank inside all arranges an air bag and a convex rubber piston; Four air bags are equipped with the gas line be connected with external high pressure source of the gas; The gas line for inflating to cylindrical shell is provided with in plunger; The two ends of described rubber piston are provided with hole, are provided with calibrate AE sensor in hole, and the FPDP on the wire connecting base plate of calibrate AE sensor is transferred to external acoustic emission acquisition system; Exhausr port is established on described chassis, exhausr port installs emptying valve, and connect gas differential pressure transmitter, mass-flow gas meter and gas data Acquisition Instrument; Heating wire is arranged in chassis; In addition, in top cover, temperature sensor is provided with; Top cover and chassis outside surface are provided with heat-insulation layer;
The head tank of above-mentioned cylindrical shell and cylindrical shell adopts x-ray when can meet CT scan to penetrate coal test specimen and requires, has again enough rigidity to meet the carbon fibre material of mechanical test.
2. coal petrography multiple physical field coupling proving installation as claimed in claim 1, it is characterized in that, the structure of above-mentioned plunger is made up of three, upper, middle and lower variable diameters right cylinder, and plunger stage casing diameter is greater than epimere and hypomere diameter; Wherein, the cross-sectional area of plunger hypomere equal stage casing sectional area deduct epimere sectional area after remaining annular cross-sectional area, stage casing part forms piston in post chamber, makes post chamber form upper and lower two annuluses, ring cavity and lower ring cavity on abbreviation; The lower diameter in post chamber and upper diameter respectively with hypomere diameter and the epimere diametric fit of plunger, plunger axis position is provided with the gas line being communicated with cylinder lumen and the second high-pressure air source, be provided with the airway that cylindrical hypomere bottom surface is communicated with upper ring cavity on the cylinder, this airway runs through plunger stage casing and hypomere, is communicated with cylinder lumen and upper ring cavity.
3. coal petrography multiple physical field coupling proving installation as claimed in claim 1, it is characterized in that, the structure of above-mentioned plunger is made up of three, upper, middle and lower variable diameters right cylinder, and plunger stage casing diameter is greater than epimere and hypomere diameter; Wherein, the cross-sectional area of plunger hypomere equal stage casing sectional area deduct epimere sectional area after remaining annular cross-sectional area, stage casing part forms piston in post chamber, makes post chamber form upper and lower two annuluses, ring cavity and lower ring cavity on abbreviation; Ring cavity diameter and plunger stage casing equal diameters on top cover, after plunger inserts top cover post chamber, on top, post chamber, a ring set is installed, ring set is nested in plunger epimere, and being fixed in the upper ring cavity of top cover, plunger axis position is provided with the gas line being communicated with cylinder lumen and the second high-pressure air source, is provided with the airway that cylindrical hypomere bottom surface is communicated with upper ring cavity on the cylinder, this airway runs through plunger stage casing and hypomere, is communicated with cylinder lumen and upper ring cavity.
4. coal petrography multiple physical field coupling proving installation as claimed in claim 3, is characterized in that, in the middle part of plunger, on ring set and lower ring cavity wall, be equipped with O-ring seal.
5. the using method of the proving installation as described in as arbitrary in claim 1-4, is characterized in that,
The first step: coal cinder is processed into design size, and surface smoothness meets the rectangular parallelepiped test specimen of ISRM's proposed standard; Respectively along parallel, vertical coal test specimen axis direction at its surface mount foil gauge and temperature compensation sheet, foil gauge wire is connected to chassis-date interface, forms 1/4 Wheatstone bridge with peripheral hardware strain data Acquisition Instrument; Coal test specimen is placed in the center on chassis, seal group cartridge chassis and cylindrical shell;
Second step: connect temperature sensor and temperature indicator in top cover, installs top cover temperature sensor, its wire is connected external temperature indicator; Respectively four air bags are inserted in head tank; The pipeline of peripheral hardware source of the gas connects each air bag through top cover; By nested for rubber piston protruding end enter in head tank, and with the balloon contacts of inside; Again calibrate AE sensor is arranged in the hole at each convex rubber piston two ends; Finally by four head tank symmetrical placement between coal test specimen and cylindrical shell;
3rd step: be tightly connected top cover and cylindrical shell, and plunger is connected to hydraulic hand-pump; And at top cover and chassis outer wrap heat-insulation layer;
4th step: device is fixed on CT scan platform; First CT scan is carried out along coal test specimen axis from bottom to top full-scale; Writing scan data;
And then to giving chassis heating wire energising, open acoustic emission system and strain data Acquisition Instrument, Real-time Collection monitoring coal test piece deformation amount and acoustic emission activity situation thereof simultaneously;
When top cover temperature sensor displays temperature value is equal with chassis temperature, coal test specimen temperature reaches setting value; According to coal test specimen cubic deformation situation, then CT full-size scanning is carried out to coal test specimen; Writing scan data;
5th step: the high pressure peripheral hardware source of the gas opening cylindrical shell, closing high-pressure air source after making to reach setting value with reference to cylinder pressure, after gas in the jar is in stable condition, injecting cylindrical shell with reference to gas in the jar by regulating reduction valve; Through after a period of time, after coal test specimen cubic deformation amount and gas pressure transmitter monitor cylindrical shell internal gas pressure value change balance and stability, illustrate that coal test specimen has been in adsorption equilibrium state;
6th step: simultaneously open the high-pressure air source connecting air bag, regulates reduction valve respectively to two groups of air bag gas injections, promotes convex rubber piston and apply two to unequal intermediate principal stress and least principal stress to coal test specimen after air bag dilatational strain;
When keeping gasbag pressure constant, manual adjustments hydraulic pump adopts step load mode, applies axial stress to coal test specimen; After coal test piece deformation and cylindrical shell gas pressure change are stablized, full-scale CT scan is carried out to coal test specimen; Writing scan data;
7th step: according to different tests test request, opens emptying valve under different stress level and temperature conditions, gas in release cylindrical shell; Gas differential pressure transmitter and mass-flow gas meter real time record gas discharge process in the process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210268641.6A CN102809574B (en) | 2012-07-18 | 2012-07-18 | Coal petrography multiple physical field coupling proving installation and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210268641.6A CN102809574B (en) | 2012-07-18 | 2012-07-18 | Coal petrography multiple physical field coupling proving installation and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102809574A CN102809574A (en) | 2012-12-05 |
| CN102809574B true CN102809574B (en) | 2015-09-16 |
Family
ID=47233334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210268641.6A Active CN102809574B (en) | 2012-07-18 | 2012-07-18 | Coal petrography multiple physical field coupling proving installation and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102809574B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353177A (en) * | 2015-07-21 | 2017-01-25 | 中国矿业大学(北京) | Industrial CT (Computed Tomography) scanning test system and synchronous rotating device |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163059A (en) * | 2013-04-09 | 2013-06-19 | 中国矿业大学 | Coal rock porosity, permeability and electroacoustic stress-strain combined measuring device under overburden pressure and heating |
| CN104614251B (en) * | 2015-02-10 | 2017-02-22 | 太原理工大学 | Testing apparatus and testing method for rock breaking representation by acoustic emission |
| CN104749044B (en) * | 2015-04-02 | 2017-06-20 | 北京科技大学 | Temperature seepage stress (THM) coupling simulation test system and its application method |
| CN106370675B (en) * | 2015-07-21 | 2019-02-19 | 中国矿业大学(北京) | A kind of industry CT scan test system |
| CN106353347A (en) * | 2015-07-21 | 2017-01-25 | 中国矿业大学(北京) | Industrial CT (Computed Tomography) scanning test system and fluid pressure loading device |
| CN105510143B (en) * | 2016-01-16 | 2018-01-30 | 黑龙江科技大学 | For the experimental provision of coal body in-situ mechanical characteristic and the Gas Hydrate saturation degree monitoring device based on the device and method |
| CN105738255A (en) * | 2016-02-04 | 2016-07-06 | 上海隧道工程有限公司 | Testing device and method for permeation of slurry in soil layer |
| CN105806762A (en) * | 2016-03-09 | 2016-07-27 | 中国矿业大学(北京) | True triaxial coal rock three-dimensional deformation and permeability holder |
| CN106370822B (en) * | 2016-11-29 | 2018-09-04 | 河南工程学院 | Enhanced Coalbed Methane Recovery by Injecting Gas experimental system and its experimental method with CT real time scans |
| CN106526094B (en) * | 2016-12-27 | 2018-07-13 | 西安科技大学 | A kind of coal and gas prominent analogue experiment installation and experimental method |
| CN107121695B (en) * | 2017-06-23 | 2019-11-08 | 四川大学 | Fluid pressure type acoustic monitoring system |
| CN107121696B (en) * | 2017-06-23 | 2019-11-05 | 四川大学 | Coupling pressure rock rupture acoustic monitoring system |
| CN107121498B (en) * | 2017-06-23 | 2019-12-13 | 四川大学 | Hydraulic acoustic emission sensor device |
| CN107817202A (en) * | 2017-10-23 | 2018-03-20 | 泉州装备制造研究所 | Rock mass characteristic Experiment Parameter device and application method under microwave radiation |
| CN107907421A (en) * | 2017-11-01 | 2018-04-13 | 中国电建集团华东勘测设计研究院有限公司 | The lower country rock response test system of Thermal-mechanical Coupling effect |
| CN107764659B (en) * | 2017-11-24 | 2024-01-05 | 河南理工大学 | Coal rock mechanical testing device and method under low-temperature liquid nitrogen impact |
| CN108398370B (en) * | 2018-04-25 | 2024-03-22 | 山东科技大学 | Test device and test method for measuring deformation process of coal body during gas flow |
| CN108458950B (en) * | 2018-05-03 | 2021-02-12 | 辽宁工程技术大学 | Device and method for measuring gas adsorption/desorption amount in coal rock loading and cracking process |
| CN108827785B (en) * | 2018-05-03 | 2020-12-08 | 辽宁工程技术大学 | Constant-volume triaxial loading device for coal rock containing gas |
| CN110018057B (en) * | 2019-04-17 | 2022-11-11 | 山东科技大学 | Microseismic-shear-seepage coupling testing device and testing method |
| CN110631937A (en) * | 2019-09-02 | 2019-12-31 | 中国矿业大学 | Testing arrangement that circulation absorption expansion deformation is anti-reflection to coal body fatigue damage |
| CN113155200B (en) * | 2021-05-16 | 2022-09-23 | 天地科技股份有限公司 | Coal mine underground reservoir coal pillar dam body damage and damage determination device and method |
| CN113863400B (en) * | 2021-12-02 | 2022-02-15 | 中建安装集团有限公司 | Cement-soil composite pile deformation detection system and detection method |
| CN114942119B (en) * | 2022-04-21 | 2023-10-03 | 北京理工大学 | High-temperature high-speed rotating impeller machinery transient flow field test system |
| CN117168987B (en) * | 2023-11-01 | 2024-02-02 | 煤炭科学研究总院有限公司 | Loading test system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949802A (en) * | 2010-09-16 | 2011-01-19 | 重庆大学 | Mesoscopic shearing test unit for gas containing coal rock |
| CN201876389U (en) * | 2010-10-27 | 2011-06-22 | 中国矿业大学(北京) | Remote controllable loading device with function of fluid CT scanning |
| CN102353608A (en) * | 2011-07-08 | 2012-02-15 | 中国矿业大学 | Device and method for measuring prediction index critical value of coal and gas outburst |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7224475B2 (en) * | 2004-04-29 | 2007-05-29 | Battelle Energy Alliance, Llc | Methods and apparatus for measurement of a dimensional characteristic and methods of predictive modeling related thereto |
-
2012
- 2012-07-18 CN CN201210268641.6A patent/CN102809574B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949802A (en) * | 2010-09-16 | 2011-01-19 | 重庆大学 | Mesoscopic shearing test unit for gas containing coal rock |
| CN201876389U (en) * | 2010-10-27 | 2011-06-22 | 中国矿业大学(北京) | Remote controllable loading device with function of fluid CT scanning |
| CN102353608A (en) * | 2011-07-08 | 2012-02-15 | 中国矿业大学 | Device and method for measuring prediction index critical value of coal and gas outburst |
Non-Patent Citations (2)
| Title |
|---|
| Experimental study on permeability of coal sample subjected to triaxial stresses;Kaihua Zeng et al.;《Procedia Engineering》;20111231;第26卷;1051-1057 * |
| 单轴应力–温度作用下煤中吸附瓦斯解吸特征;何满潮等;《岩石力学与工程学报》;20100531;第29卷(第5期);865-872 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353177A (en) * | 2015-07-21 | 2017-01-25 | 中国矿业大学(北京) | Industrial CT (Computed Tomography) scanning test system and synchronous rotating device |
| CN106353177B (en) * | 2015-07-21 | 2019-02-26 | 中国矿业大学(北京) | A kind of industry CT scan test system and synchronous rotating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102809574A (en) | 2012-12-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102809574B (en) | Coal petrography multiple physical field coupling proving installation and using method thereof | |
| CN202770787U (en) | Coal and gas acting testing device in true triaxial states | |
| CN108060903B (en) | Coal-bed gas pressure measures dynamic self-balance pressurization hole sealing device and method | |
| CN102735548B (en) | Multifunctional true triaxial flow solid coupling test system | |
| CN102735547B (en) | Coal-rock hydraulic fracturing testing method under true triaxial state | |
| CN102735549B (en) | Multifunctional true triaxial flow solid coupling pressure chamber | |
| CN102735600B (en) | Method for testing coal sample seepage under true triaxial state | |
| CN107576774B (en) | Coal seam containing gas mechanical characteristic analogue experiment method under uniaxial compression | |
| CN104596909B (en) | Multidimensional adds the close coupling of unloading multiphase porous media to damage Seepage Experiment method | |
| CN103868799B (en) | Rock mechanical characteristic analyzer for non-conventional oil-gas reservoir stratum | |
| CN108051307A (en) | Rock disturbance creep test test system and method under seepage water pressure effect | |
| CN104865176A (en) | Seepage experiment system and method for gas-containing coal under action of impact load | |
| CN105334142B (en) | A kind of experimental provision formed for simulating shield mud film | |
| CN105067494A (en) | Permeability testing method and device based on radial percolation experiment | |
| CN210863474U (en) | Visual true triaxial loading and unloading seepage test equipment for clay rock | |
| CN105823854A (en) | Gas-solid coupling test device and method for deep coal gas borehole drainage effect | |
| CN106370576A (en) | Simulation apparatus and method for researching permeability of coal rock | |
| WO2022161137A1 (en) | System for measuring dynamic physical properties of rock | |
| CN105784559A (en) | True triaxial fluid-structure interaction coal body seepage test device | |
| CN108412472A (en) | Fractured-cavernous carbonate reservoir solid note adopts model, simulation system and experimental method | |
| CN108709815A (en) | Measure the experimental provision and method of Fracture Toughness of Rocks under low temperature | |
| CN104374684A (en) | System for testing permeability of unloading coal and rock mass in mining process and application thereof | |
| CN109239310A (en) | A kind of seepage force size and its measuring device and method that stratum effective stress is influenced | |
| CN104914122A (en) | Nuclear magnetic resonance core measurement apparatus capable of simulating reservoir conditions | |
| CN110284922A (en) | A kind of CO2Geological storage strengthens gas drainage and induces prominent method for testing risk |
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 |