CN109100487A - The loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis and experiment of machanics system - Google Patents
The loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis and experiment of machanics system Download PDFInfo
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Abstract
The present invention provides a kind of loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis and experiment of machanics systems, including gas pressurization system, pressure-measuring system, core holding unit, triaxial pressure control system.The present invention can simulate the creep seepage flow and mechanics evolutionary process of coal and rock under true formation condition low temperature environment, a kind of experiment porch of three axis analog simulations is provided for the anti-reflection coal and rock mash gas extraction of low temperature fracturing or shale gas, scientific experimental data and theoretical foundation can be provided with the physical parameter of coal and rock in situ under quantitative study freezing condition, the field application for the anti-reflection coal seam of low temperature fracturing.
Description
Technical field
Present invention relates particularly to a kind of loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis and experiment of machanics systems.
Background technique
With carrying out in a deep going way for the anti-reflection technology in coal seam, anhydrous coal seam low temperature fracturing technology is increasingly becoming a kind of important cause
Cleft hand section mainly includes liquid nitrogen fracturing technology, liquid carbon dioxide fracturing technology.Low temperature fracturing be a fracture mechanics and it is non-
The process and a multiphase of even radial flow coupling complicate dynamic process, how to predict that this dynamic process is entire work
The key of Cheng Yingyong.
For current low temperature fracturing technology, both at home and abroad to the research dynamics of coal body low temperature fracturing process under three axis confining pressures
It is quite insufficient, especially low temperature environment containing under three axis loaded condition of gas seepage flow creep and mechanical characteristics research do not send out even more
It is existing.Seepage flow creep and mechanical property of the true stratum Coal Under rock mass in low temperature environment is simulated to develop, it can be to low temperature fracturing
Anti-reflection gas drainage from coal seam engineer application provides scientific basis and theoretical basis.Therefore, the loaded coal containing methane gas rock mass of three axis is realized
Seepage flow creep and Mechanics Performance Testing are current urgent problems to be solved in low temperature environment.
Summary of the invention
It is an object of the present invention to solve the deficiency of the existing technology and provide a kind of loaded coal containing methane gas Rock At Low Temperatures of three axis
The creep of environment seepage flow and experiment of machanics system.
The purpose of the present invention is what is be achieved through the following technical solutions:
The loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis of one kind and experiment of machanics system, including gas boosting system
System, pressure-measuring system, core holding unit, triaxial pressure control system；
The gas pressurization system includes air compressor machine, booster pump, gas bomb, high pressure gas storage tank, the air compressor machine, gas
Body steel cylinder is connected with the import of the booster pump respectively, and the high pressure gas storage tank is connected with the outlet of the booster pump,
And valve is respectively equipped on the pipeline of above-mentioned connection；The external pressure reducing valve of the high pressure gas storage tank, pressure regulation pressure gauge and decompression
Valve outlet valve；
The pressure-measuring system includes pressure sensor one, with reference to cylinder, pressure sensor two, the pressure sensor
One, it is connected with reference to cylinder, pressure sensor two with the pressure reducing valve outlet valve, the pressure sensor one is passed with reference to cylinder, pressure
Sensor two is connected by intake valve with the core holding unit；
The triaxial pressure control system includes SERVO CONTROL press machine and automatic ring pressure tracking pump, and rock core plug is upper on one
End is fixed on the crossbeam on SERVO CONTROL press machine top, the upper rock core plug and lower end be mounted on the rock core and clamp
In device；Once rock core plug is mounted in the lower carrier of the SERVO CONTROL press machine, is moved up by the lower carrier
Carry out application axial compressive force；It is equipped with gas inlet manifold in the upper rock core plug, goes out in the lower rock core plug equipped with gas
Mouth pipeline；
The core holding unit includes shell, is equipped with rock core colloid set, the rock core colloid set in the inside of the shell
It is arranged on the outside of the upper rock core plug；Ring, which is equipped with, in the outside of rock core colloid set presses water storage chamber, the automatic ring pressure
Tracking pump is connected with ring pressure water storage chamber.
Further, driving pressure regulator valve is equipped on the pipeline that the air compressor machine is connected with the booster pump；In the gas
The pipeline that steel cylinder is connected with the booster pump is equipped with gas cylinder on/off valve；It is connected with the booster pump in the high pressure gas storage tank
Pipeline be equipped with high pressure gas outlet valve.
Further, the upper end connection ring of the ring pressure water storage chamber presses water inlet, and lower end connection ring presses water drain.
Further, it is equipped with temperature control system in the outside of the core holding unit, the temperature control system includes temperature
Controller, heating coil and insulating layer are spent, the periphery of the core holding unit is arranged in the heating coil, and the insulating layer setting exists
The periphery of the heating coil, the temperature controller are connected with the heating coil.
It further, further include gas flowmeter, drier, the gas flowmeter is connected with the drier, described
Drier is connected with the lower rock core plug, and gas vent is equipped on the pipeline that the drier is connect with the lower rock core plug
Valve.Drier can remove the impurity such as the moisture in gas, it is ensured that the accuracy of gas flow test.
Further, an air inlet pipeline is equipped with before the intake valve, the end of the air inlet pipeline is connected to described
Before gas vent valve；The gentle body valve of sensor valve is equipped on the air inlet pipeline.
Further, it is equipped with air inlet on the gas inlet tube road, gas outlet is equipped on the gas outlet tube road；
The intake valve is connected with the air inlet, and the intake valve and gas outlet valve are connected with the gas outlet.
Further, the automatic ring pressure tracking pump is connected with ring hydraulic fluid and pressure sensor three respectively, described automatic
The pipeline that ring pressure tracking pump is connect with ring pressure water storage chamber is equipped with ring pressure control valve.Rock core is connected to by ring pressure control valve
Ring in clamper presses water storage chamber, and axis presses the load that 100Mpa can be achieved, and ring presses the load that 80MPa can be achieved, and creep is seeped
The time is flowed up to 2 months durations.
Further, at least one gas bomb, the gas bomb include methane gas cylinder, nitrogen gas cylinder, helium gas cylinder
Deng.
It further, further include computer, the computer and the gas pressurization system, pressure-measuring system, rock core press from both sides
Holder, triaxial pressure control system are connected.
It connects booster pump by gas bomb, the air compressor machine in gas pressurization system and is pressurized, then booster pump connects
High pressure gas storage tank carries out pressure control by pressure reducing valve and pressure regulation pressure gauge, and core holding unit inner cryogenic environment lower limit is-
196℃.Temperature controller and insulating layer are provided with outside core holding unit, the clamper external high temperature upper limit is 120 DEG C.Cause
This, the present invention is pressurized gas by gas bomb, air compressor machine, booster pump and high pressure gas storage tank, pressure regulation.
The present invention controls machine, coal petrography sample by core holding unit, servo pressure, carries out rock core folder with reference to cylinder and computer
The calibration of holder internal volume；Sample under different triaxial pressures, different temperatures environment is carried out by gas piping, cryogenic media pipeline
Porosity, permeability determination, gas adsorption desorption experiment and mechanics parameter test.
The operating pressure of system of the invention, temperature are equipped with limiting value, it is ensured that test is safe and reliable, and operation indicating is with anti-error
Operation.Booster pump and automatic ring pressure tracking pump design limit protect pressure, the pump trip when pump pressure, which reaches capacity, protects pressure
Protection, while the valve being connected can automatically turn on, unloading pressure.Temperature controller design limit protects temperature, when rock core presss from both sides
Temperature reaches capacity in holder when protecting temperature, and each instrument is automatically cut off the power.
The present invention can simulate the creep seepage flow and mechanics evolutionary process of coal and rock under true formation condition low temperature environment, be
Low temperature fracturing is anti-reflection coal and rock mash gas extraction or shale gas provide a kind of experiment porch of three axis analog simulations, can be with quantitative study
The physical parameter of in situ coal and rock under freezing condition, for the anti-reflection coal seam of low temperature fracturing field application provide scientific experimental data with
Theoretical foundation.Therefore, experimental system provided by the invention has breakthrough and innovation and experiment urgency.It is opened respectively using the present invention
Seepage flow and the experiment of machanics research for opening up coal sample porosity test, loaded coal containing methane gas sample desorption properties and coal containing methane gas sample, pass through
The experimental verification diversity of the system functionally and the accuracy in test, reliability.
Detailed description of the invention
Fig. 1 is connection schematic diagram of the invention；
Fig. 2 is the cross-sectional view of the structure of core holding unit of the present invention；
Fig. 3 is the cross-sectional view of the structure of core holding unit of the present invention and temperature control system.
Mark explanation: 1, air compressor machine；2, pressure regulator valve is driven；3, booster pump；4, gas bomb；5, upper rock core plug；6, gas cylinder
Switch valve；7, lower rock core plug；8, high pressure gas outlet valve；9, high pressure gas storage tank；10, pressure reducing valve；11, pressure regulation pressure gauge；12,
Pressure reducing valve outlet valve；13, pressure sensor one；14, with reference to cylinder；15, pressure sensor two；16, sensor valve；17, air inlet
Valve；18, SERVO CONTROL press machine；19, temperature controller；20, core holding unit；21, foil gauge；22, coal petrography sample；23, gas
Body valve；24, gas vent valve；25, drier；26, gas flowmeter；27, ring pressure control valve；28, pressure sensor three；29,
Automatic ring pressure tracking pump；30, ring hydraulic fluid；31, heating coil；32, insulating layer；20-1, shell；20-2, rock core colloid set；20-3,
Ring presses water storage chamber；20-4, ring press water inlet；20-5, ring press water drain；20-6, air inlet；20-7, gas outlet；20-8, sample
Product room.
Specific embodiment
A specific embodiment of the invention is further described in detail with reference to the accompanying drawing.
Referring to Figure 1~3, the present invention provides a kind of loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis and power
Learn experimental system, including gas pressurization system, pressure-measuring system, core holding unit 20, triaxial pressure control system.
Gas pressurization system includes air compressor machine 1, booster pump 3, gas bomb 4, high pressure gas storage tank 9, at least one gas
Body steel cylinder 4, gas bomb 4 include methane gas cylinder, nitrogen gas cylinder, helium gas cylinder etc..Air compressor machine 1, gas bomb 4 respectively with pressurization
The import of pump 3 is connected, and high pressure gas storage tank 9 is connected with the outlet of booster pump 3, and sets respectively on the pipeline of above-mentioned connection
There is valve.
Specifically, being equipped with driving pressure regulator valve 2 on the pipeline that air compressor machine 1 is connect with booster pump 3；In gas bomb 4 and increase
The pipeline that press pump 3 connects is equipped with gas cylinder on/off valve 6；High pressure is equipped on the pipeline that high pressure gas storage tank 9 is connect with booster pump 3
Gas vent valve 8.The external pressure reducing valve 10 of high pressure gas storage tank 9, pressure regulation pressure gauge 11 and pressure reducing valve outlet valve 12.
Pressure-measuring system includes pressure sensor 1, with reference to cylinder 14, pressure sensor 2 15, pressure sensor one
13, it is connected with reference to cylinder 14, pressure sensor 2 15 with pressure reducing valve outlet valve 12, pressure sensor 1, with reference to cylinder 14, pressure
Sensor 2 15 is connected by intake valve 17 with core holding unit 20.
Triaxial pressure control system includes SERVO CONTROL press machine 18 and automatic ring pressure tracking pump 29, rock core plug 5 on one
Upper end is fixed on the crossbeam on 18 top of SERVO CONTROL press machine, upper rock core plug 5 and lower end be mounted in core holding unit 20.
Once rock core plug 7 is mounted in the lower carrier of SERVO CONTROL press machine 18, is moved up by lower carrier and is carried out application axis
To pressure, sample room 20-8 is formed between upper rock core plug 5 and lower rock core plug 7.Gas inlet manifold is equipped in upper rock core plug 5,
Gas exit line is equipped in lower rock core plug 7.
Core holding unit 20 includes shell 20-1, is equipped with rock core colloid in the inside of shell 20-1 and covers 20-2, rock core colloid
Set 20-2 is arranged on the outside of upper rock core plug 5.Ring, which is equipped with, in the outside of rock core colloid set 20-2 presses water storage chamber 20-3, automatic ring
Pressure tracking pump 29 is connected with ring pressure water storage chamber 20-3.Ring presses the upper end connection ring of water storage chamber 20-3 to press water inlet 20-4, lower end
Connection ring presses water drain 20-5.
It further include gas flowmeter 26, drier 25, gas flowmeter 26 is connected with drier 25, and drier 25 is under
Rock core plug 7 is connected, and gas vent valve 24 is equipped on the pipeline that drier 25 is connect with lower rock core plug 7.Drier 25 can be with
Remove the impurity such as the moisture in gas, it is ensured that the accuracy of gas flow test.
An air inlet pipeline is equipped with before intake valve 17, before the end of air inlet pipeline is connected to gas vent valve 24
Face；Sensor valve 16 and gas trap 23 are equipped on air inlet pipeline.
It is equipped with air inlet 20-6 on gas inlet tube road, gas outlet 20-7 is equipped on gas outlet tube road；Intake valve
17 are connected with air inlet 20-6, and intake valve 17 and gas outlet valve 24 are connected with gas outlet 20-7.
Automatic ring pressure tracking pump 29 is connected with ring hydraulic fluid 30 and pressure sensor 3 28 respectively, presses tracking pump in automatic ring
29 are equipped with ring pressure control valve 27 with the ring pressure water storage chamber 20-3 pipeline connecting.Rock core clamping is connected to by ring pressure control valve 27
Ring in device 20 presses water storage chamber 20-3, and axis presses the load that 100Mpa can be achieved, and ring presses the load that 80MPa can be achieved, creep
Seepage flow time was up to 2 months durations.
It is equipped with temperature control system in the outside of core holding unit 20, temperature control system includes temperature controller 19, adds
The periphery of core holding unit 20 is arranged in gas ket 31 and insulating layer 32, heating coil 31, and the outer of heating coil 31 is arranged in insulating layer 32
It encloses, temperature controller 19 is connected with heating coil 31.
The invention also includes computer, computer and above-mentioned gas pressure charging system, pressure-measuring system, core holding unit
20, triaxial pressure control system is connected.
The present invention can carry out related experiment by following steps:
A, pore volume verification is carried out, specifically includes the following steps:
(1) machine is controlled by servo pressure to lift core holding unit 20, coal petrography sample is placed on lower rock core plug 7.It is logical
It crosses servo pressure control machine 18 slowly to put down core holding unit 20, lower rock core plug 7 is made to enter rock from 20 bottom end of core holding unit
In heart clamp holder 20, when upper rock core plug 5 at the top of coal petrography sample 22 close to it is concordant when stop.Continue to decline core holding unit 20,
If lower rock core plug 7 deviates, can with it is hand steered just, when coal petrography sample 22 and upper rock core plug 5 contact, stopping is acted.According to experiment
Ring pressure value is set on tracking pump 29 it is required that pressing in automatic ring, by giving ring to press water storage chamber 20-3 pressurization, rock core colloid set can be allowed
20-2 fits closely rock core plug 5 and lower rock core plug 7, plays the role of better seal.
(2) the air inlet 20-6 of the gas inlet manifold end in upper rock core plug 5 will be located at, in lower rock core plug 7
The gas outlet 20-7 of gas exit line end is connected with pipeline, opens sensor valve 16.Open pressure reducing valve outlet valve 12
It inflates into reference cylinder 14, according to one 13 numerical value of pressure sensor adjustment pressure reducing valve 10 to outlet pressure 100KPa, is closed after balance
Close pressure reducing valve outlet valve 12.
Intake valve 17, gas trap 23 are opened, pressure is spread into core holding unit 20, and after pressure balance, record pressure is passed
Sensor that 2 15 shows pressure value Ps 1；Checking parameter is calculated automatically by computer.Open gas vent valve 24, emptying calibration gas
Body.
B, porosity determination is carried out, specifically includes the following steps:
(1) tested coal petrography sample 22 is packed into vertical clamper 20, by automatic ring press tracking pump 29 operating procedures according to
Requirement of experiment sets ring pressure value.
(2) clamper air inlet 20-6, gas outlet 20-7 are connected with pipeline, opens sensor valve 16.Open folder
Pressure reducing valve outlet valve 12 is inflated to reference cylinder 14, adjusts pressure reducing valve 10 to outlet pressure according to one 13 numerical value of pressure sensor
100KPa closes pressure reducing valve outlet valve 12 after balance.
Intake valve 17, gas trap 23 are opened, pressure is spread into vertical clamper 20, and after pressure balance, record pressure is passed
Sensor 2 15 shows pressure value P 2；Computer calculates checking parameter automatically.Gas vent valve 24 is opened, marked gas is vented.It is real
After testing, the gaseous porosity of sample is calculated according to porosity formula.
C, gas needed for permeability is connected on gas pressurization system, machine is controlled for core holding unit by servo pressure
20 lift, and are placed on lower rock core plug 7 and stick foil gauge 21 for coal petrography sample, and foil gauge 21 is drawn with flat wire, uses thermal shrinkable sleeve
Coal petrography sample 22 and lower rock core plug 7 are connected.
Machine 18 is controlled by servo pressure slowly to put down core holding unit 20, makes lower rock core plug 7 from core holding unit 20
Bottom end enters in core holding unit 20, when upper rock core plug 5 at the top of coal petrography sample 22 close to it is concordant when stop.Continue to decline rock core
Clamper 20, if lower rock core plug 7 deviates, can with it is hand steered just, stop moving when coal petrography sample 22 and upper rock core plug 5 contact
Make.Tracking pump 29 plus ring pressure are pressed with automatic ring, the ring first unclamped on clamper 20 presses water drain 20-5, is pressed and is tracked with automatic ring
Ring pressure water drain 20-5 is closed after pumping 29 topped up with water, the automatic tracking loop pressure pressure when ring pressure reaches setting value.
D, cryogenic media freezes coal sample sample, comprising: the connecting pipeline on sensor valve 16 and gas trap 23 is removed,
Sensor valve 16 is connected into cryogenic media storage tank, opens sensor valve 16 and gas trap 23, opens cryogenic media storage tank, it is low
Warm medium passes through coal petrography sample 22, and the freeze samples time is set as needed.After freezing, closure sensor valve 16 is gentle
Body valve 23 opens gas vent valve 24.
E, gas permeability measures, comprising: opens computer, setting experiment required temperature, leads on relevant calculation software
19 temperature control of excess temperature controller.Pressure charging system outlet pressure is adjusted according to requirement of experiment, opens pressure reducing valve outlet valve 12, is opened
Intake valve 17, regulating gas outlet valve 24 control gas flow.After pressure, temperature, flow indication value are stablized, calculated passing through
Machine acquires data, and computer calculates sample (22) according to pressure, flow, rock core size, atmospheric pressure, gas viscosity, temperature etc. and seeps
Saturating rate.Meter method surveys computing permeability formula are as follows:
In formula: μ-nitrogen viscosity, MPa.s；L- rock core length, cm；P0Same day atmospheric pressure, KPa；D- core diameter, cm；P
Out-rock core outlet pressure, KPa；K- permeability, 10-3 μm2；T- temperature, DEG C.
F, gas adsorption desorption test, comprising: the pipeline of connection gas bomb 4 closes other pipes to core holding unit 20
Road valve adjusts required experimental temperature by temperature controller 19, controls machine 18 and automatic ring pressure tracking by servo pressure
29 control triaxial pressure of pump, opens methane gas pipeline pressure reducing valve 10 and pressure reducing valve outlet valve 12 is adjusted to required pressure, methane
Gas by coal petrography sample 22 carry out adsorption-desorption, the adsorption-desorption time is set as needed, after open gas vent valve
Door 24 acquires data by drier 25 and gas flowmeter 26 and calculates sample to the adsorption-desorption amount of methane.
G, mechanics performance determining, comprising: after creep Seepage Experiment is finished, different temperatures environment under three axis/single shaft can be carried out
The mechanical strength of lower coal petrography sample is tested, and controls machine 18 to the sample under different pressures environment and temperature environment by servo pressure
Compression failure experiment is carried out, and obtains the load-deformation curve of coal petrography sample 22.
Above step is only a kind of Optimization Steps, to introduce based on experimental system function, can be carried out according to experiment condition
Optimum organization and adjustment testing procedure.
Experimental system of the invention can realize the development and research to work below:
1. coal petrography sample porosity, permeability under different temperatures (high temperature and low temperature), pressure condition under three axis loading environments
Test；
2. coal petrography sample inhales the gases such as methane under different temperatures (high temperature and low temperature), pressure condition under three axis loading environments
Attached desorption test；
3. the long-term load of coal petrography creep-seepage flow etc. and mechanical property tests under three axis loading environments.
Meanwhile in conjunction with various assistant analysis test equipments, as scanning electron microscope, X diffraction analysis instrument, aperture Particle Size Analyzer,
MRI system obtains unconventional gas reservoir sample pore structure, diagenesis component and other mechanical properties ginseng
Number, provides more full and accurate basic data for theory analysis, adsorption/desorption procedural test.
Embodiment described above is merely to illustrate technical idea and feature of the invention, in the art its object is to make
Technical staff can understand the content of the present invention and implement it accordingly, patent model of the invention only cannot be limited with the present embodiment
It encloses, i.e., it is all according to same changes or modifications made by disclosed spirit, it still falls in the scope of the patents of the invention.
Claims (10)
1. the loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis of one kind and experiment of machanics system, which is characterized in that including
Gas pressurization system, pressure-measuring system, core holding unit, triaxial pressure control system；
The gas pressurization system includes air compressor machine, booster pump, gas bomb, high pressure gas storage tank, the air compressor machine, gas steel
Bottle is connected with the import of the booster pump respectively, and the high pressure gas storage tank is connected with the outlet of the booster pump, and
Valve is respectively equipped on the pipeline of above-mentioned connection；The external pressure reducing valve of the high pressure gas storage tank, pressure regulation pressure gauge and pressure reducing valve go out
Mouth valve；
The pressure-measuring system includes pressure sensor one, with reference to cylinder, pressure sensor two, the pressure sensor one, ginseng
Examine cylinder, pressure sensor two is connected with the pressure reducing valve outlet valve, the pressure sensor one, with reference to cylinder, pressure sensor
Two are connected by intake valve with the core holding unit；
The triaxial pressure control system includes SERVO CONTROL press machine and automatic ring pressure tracking pump, and the upper end of rock core plug is solid on one
Be scheduled on the crossbeam on SERVO CONTROL press machine top, the upper rock core plug and lower end be mounted on the core holding unit
It is interior；Once rock core plug is mounted in the lower carrier of the SERVO CONTROL press machine, in the upper rock core plug be equipped with gas into
Mouth pipeline, is equipped with gas exit line in the lower rock core plug；
The core holding unit includes shell, is equipped with rock core colloid set, the rock core colloid set setting in the inside of the shell
On the outside of the upper rock core plug；Ring, which is equipped with, in the outside of rock core colloid set presses water storage chamber, the automatic ring pressure tracking
Pump is connected with ring pressure water storage chamber.
2. the loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis according to claim 1 and experiment of machanics system,
It is characterized in that, being equipped with driving pressure regulator valve on the pipeline that the air compressor machine is connected with the booster pump；In the gas bomb
The pipeline being connected with the booster pump is equipped with gas cylinder on/off valve；In the pipe that the high pressure gas storage tank is connected with the booster pump
Road is equipped with high pressure gas outlet valve.
3. the loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis according to claim 1 and experiment of machanics system,
It is characterized in that, the upper end connection ring of the ring pressure water storage chamber presses water inlet, lower end connection ring presses water drain.
4. the loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis according to claim 1 and experiment of machanics system,
It is characterized in that, being equipped with temperature control system in the outside of the core holding unit, the temperature control system includes temperature control
The periphery of the core holding unit is arranged in device, heating coil and insulating layer processed, the heating coil, and the insulating layer is arranged described
The periphery of heating coil, the temperature controller are connected with the heating coil.
5. the loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis according to claim 1 and experiment of machanics system,
It is characterized in that, further including gas flowmeter, drier, the gas flowmeter is connected with the drier, the drying
Device is connected with the lower rock core plug, and gas vent valve is equipped on the pipeline that the drier is connect with the lower rock core plug.
6. the loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis according to claim 5 and experiment of machanics system,
It is characterized in that, being equipped with an air inlet pipeline before the intake valve, the end of the air inlet pipeline is connected to the gas
Before outlet valve；The gentle body valve of sensor valve is equipped on the air inlet pipeline.
7. the loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis according to claim 1 and experiment of machanics system,
It is characterized in that, being equipped with air inlet on the gas inlet tube road, gas outlet is equipped on the gas outlet tube road；It is described
Intake valve is connected with the air inlet, and the intake valve and gas outlet valve are connected with the gas outlet.
8. the loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis according to claim 1 and experiment of machanics system,
It is characterized in that, the automatic ring pressure tracking pump is connected with ring hydraulic fluid and pressure sensor three respectively, in the automatic ring pressure
The pipeline that tracking pump is connect with ring pressure water storage chamber is equipped with ring pressure control valve.
9. the loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis according to claim 2 and experiment of machanics system,
It is characterized in that, at least one gas bomb, the gas bomb includes methane gas cylinder, nitrogen gas cylinder, helium gas cylinder.
10. the loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis according to claims 1 to 9 and experiment of machanics system
System, which is characterized in that further include computer, the computer and the gas pressurization system, pressure-measuring system, rock core clamp
Device, triaxial pressure control system are connected.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810883560.4A CN109100487A (en) | 2018-08-06 | 2018-08-06 | The loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis and experiment of machanics system |
| PCT/CN2018/120536 WO2020029497A1 (en) | 2018-08-06 | 2018-12-12 | A seepage-creep and mechanical experimental system for coal and rock mass containing gas under triaxial loading in low-temperature environment |
| ZA2019/03965A ZA201903965B (en) | 2018-08-06 | 2019-06-19 | A seepage-creep and mechanical experimental system for coal and rock mass containing gas under triaxial loading in low-temperature environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810883560.4A CN109100487A (en) | 2018-08-06 | 2018-08-06 | The loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis and experiment of machanics system |
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| CN109100487A true CN109100487A (en) | 2018-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810883560.4A Pending CN109100487A (en) | 2018-08-06 | 2018-08-06 | The loaded coal containing methane gas Rock At Low Temperatures environment seepage flow creep of three axis and experiment of machanics system |
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| Country | Link |
|---|---|
| CN (1) | CN109100487A (en) |
| WO (1) | WO2020029497A1 (en) |
| ZA (1) | ZA201903965B (en) |
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| CN109459313A (en) * | 2018-12-29 | 2019-03-12 | 四川大学 | The mechanical behavior and seepage characteristic home position testing method and system of coal and rock under the influence of true mining induced stress |
| CN111650031A (en) * | 2020-06-08 | 2020-09-11 | 长安大学 | Simulation and simulation experiment method for detection device for accurately measuring gas content of shale |
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| WO2020029497A1 (en) | 2020-02-13 |
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