CN201965078U - Temperature-controllable triaxial permeability test device for soil body - Google Patents

Temperature-controllable triaxial permeability test device for soil body Download PDF

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Publication number
CN201965078U
CN201965078U CN2010206937123U CN201020693712U CN201965078U CN 201965078 U CN201965078 U CN 201965078U CN 2010206937123 U CN2010206937123 U CN 2010206937123U CN 201020693712 U CN201020693712 U CN 201020693712U CN 201965078 U CN201965078 U CN 201965078U
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CN
China
Prior art keywords
confined pressure
gas
liquid
axial compression
water tank
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CN2010206937123U
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Chinese (zh)
Inventor
薛强
陈亿军
冯夏庭
李江山
刘磊
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中国科学院武汉岩土力学研究所
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Priority to CN2010206937123U priority Critical patent/CN201965078U/en
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Publication of CN201965078U publication Critical patent/CN201965078U/en

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Abstract

The utility model relates to a temperature-controllable triaxial permeability test device for a soil body, which comprises a sealed chamber formed by a confining pressure chamber and a confining pressure chamber upper cover, wherein the confining pressure chamber is a transparent interlayer, an exhaust valve is arranged on the confining pressure chamber upper cover, an axial pressure device is positioned inside the sealed chamber which is formed by the confining pressure chamber and the confining pressure chamber upper cover, a piston stroke brake is arranged on the axial pressure device, a pipe that is arranged on the axial pressure device passes through the confining pressure chamber upper cover and is fixed below the confining pressure chamber upper cover through sealing nuts, the pipe that is arranged on the axial pressure device is connected with a vacuum exhaustion device, and a water-level display device and a gas solenoid valve are arranged in sequence on the pipe. The temperature-controllable triaxial permeability test device for the soil body ensures the truth and the uniformity of pressure on the test sample, improves the sealing property, increases the saturation speed, keeps constant temperature, makes the test process visualized, and achieves the real-time monitoring of test data and the automatic control on the test process.

Description

A kind of controllable temperature soil body three-axis infiltration experiment device

Technical field

The utility model relates to a kind of controllable temperature soil body three-axis infiltration experiment device, is mainly used in testing different temperatures, different axial compression and the interaction of confined pressure condition soil body penetration experimental Research on Characteristics down in the environmental geotechnical, belongs to the environmental geotechnical field.

Background technology

Be accompanied by quickening of urbanization process, the Geotechnical Engineering particularly development of environmental geotechnical is very fast, this all has higher requirement to prospecting, design and construction, definite security for disposal engineerings such as quantitative evaluation mud, mud and pollution soil of Geotechnical Engineering parameter test method has important engineering significance, wherein infiltration coefficient is an important index of concentrated expression soil body penetration ability, the correctness of its value has material impact to the calculating and the various mechanical property of infiltration capacity, and earthwork engineering design and construction are had important directive significance.

Temperature is to the soil body, the infiltrative important influence of mud, mud and pollution soil etc. particularly is mainly reflected in: along with the rising of temperature, the skeleton of discarded object produces thermal expansion, make and itself further to dwindle, thereby cause the decline of permeability with regard to narrow venturi; The rising of temperature promotes and has aggravated the dispersion of soil body particle on the other hand, the soil body particle plugging after the dispersion pore constriction, thereby reduced the permeability of the soil body largely.

At present, the soil body three-axis penetration instrument equipment of controllable temperature and the variation of consideration process of the test sample voidage still lacks.There are the following problems for existing surveying instrument: the normal direction inequality of exerting pressure, and the sample border is compressed, the pressure that causes the pressure of sample boundary member to be subjected to greater than center section; Most of instruments adopt elevated tanks that pressure head is provided, and pressure is limited, is difficult to carry out the permeability test of big pressure reduction, and manual modulation valve regulates pressure, the pressure reduction instability in the permeameter, and the confidence level of test reduces greatly; Used permeameter mostly is the copper material instrument, and the operation engineering is black-box operation, is not easy in the process of the test observe and control; Problems such as existing sclerine permeameter exists sidewall seepage and the slow problem of sample saturated velocity, causes test period long, and precision is not high; Sample can deform when being subjected to axle pressure, the sample factor of porosity changes, the permeance property of sample changes, and existing most instrument is being done the variation of not considering sample factor of porosity in the process of the test when infiltration coefficient calculates, causes the precision as a result measured not high.At present the experimental test means be difficult to geotechnological sample particularly the permeance property of the geotechnological sample of environmental geotechnical (mud, mud and pollution soil etc.) carry out precisely, measure fast.

Some environmental geotechnical, Seepage problems as refuse landfill antiseepage and self rubbish soil body, the hot repair of polluting the soil body is multiple, mud landfill and modification engineering are used (antiseepage lining, refuse landfill closing etc.) and the desilting of lake rivers etc. all relate to the soil body in different temperatures, different axial compressions, permeance property problem under operating modes such as different confined pressures interact, at these practical problemss in the engineering, press for and develop the permeability test instrument that is applicable to engineering reality, that is: specimen temperature is controlled, saturated velocity is fast, the monitoring of porosity space-time, the permeameter of axial compression confined pressure steady solves the problems referred to above.

Summary of the invention

At the problem of above-mentioned existence, the purpose of this utility model is to provide a kind of controllable temperature soil body three-axis infiltration experiment device that the permeance property of the soil body is measured under conditions such as different temperatures, different axial compression, different confined pressures interact.

To achieve these goals, its technical solution is: the confined pressure cavity of controllable temperature soil body three-axis infiltration experiment device and confined pressure cavity loam cake constitute seal chamber, the confined pressure cavity is the transparent sandwich shape, confined pressure cavity loam cake is provided with vent valve, the axial compression device is positioned at the confined pressure cavity and confined pressure cavity loam cake constitutes seal chamber, the axial compression device is provided with the throw of poston braking, pipeline on the axial compression device passes confined pressure cavity loam cake and is fixed in the below of confined pressure cavity loam cake by sealing nut, pipeline on the axial compression device is connected with vacuum suction device, be provided with water level display and gas solenoid valve on the pipeline successively, axial compression device below is provided with permeable headkerchief, go up between permeable headkerchief and the axial compression device and be provided with O-ring seal, go up and have upward seal groove of annular on the permeable headkerchief sidewall, permeable headkerchief is positioned at the bottom of confined pressure cavity down, pipeline on the permeable headkerchief passes the bottom of confined pressure cavity and seals by sealing nut down, have annular lower seal groove cavity on the permeable headkerchief sidewall down, constant temperature water bath apparatus by pipeline respectively with following permeable headkerchief on pipeline, be respectively arranged with liquid control valve on confined pressure pressurized water tank inlet and connection of axial compression pressurized water tank inlet and the pipeline, between pipeline that descends permeable headkerchief and liquid control valve, be disposed with liquid electromagnetic valve and flow measurement device, liquid electromagnetic valve is connected with the liquid volume measurement instrument, the axial compression device, permeable headkerchief was on same axial line under upward permeable headkerchief reached, the pressed gas device by gas pipe line respectively with the first gas-liquid variable valve, be respectively equipped with gas solenoid valve on the air intake opening connection of the second gas-liquid variable valve and the gas pipe line, the first gas-liquid variable valve, the gas outlet of the second gas-liquid variable valve by gas pipe line respectively with the axial compression pressurized water tank, the air intake opening of confined pressure pressurized water tank connects, the axial compression pressurized water tank, the top of confined pressure pressurized water tank is respectively arranged with vent valve, the liquid storehouse of the first gas-liquid variable valve is connected with pipeline between the vacuum suction device with the liquid outlet of axial compression pressurized water tank and axial compression device respectively by aqueduct, and the pipeline connection port between axial compression device and the vacuum suction device is between water level display and gas solenoid valve, the liquid storehouse of the second gas-liquid variable valve is connected with the liquid outlet of confined pressure pressurized water tank and the inlet of confined pressure cavity respectively by aqueduct, the aqueduct that connects the axial compression pressurized water tank and the first gas-liquid variable valve is provided with pressure measurer, pressure measurer is positioned at the plane at the place, bottom of permeable headkerchief, is disposed with flow measurement device on the aqueduct of the connection confined pressure cavity and the second gas-liquid variable valve, liquid control valve and pressure measurer and flow measurement device, liquid control valve is between confined pressure cavity and confined pressure pressurized water tank.

Described axial compression pressurized water tank and confined pressure pressurized water tank are outside equipped with heat-insulation layer.

Described aqueduct is outside equipped with heat-insulation layer.

Owing to adopted above technical scheme, the pressed gas device that controllable temperature soil body three-axis infiltration experiment device of the present utility model adopts provides the pressure of satisfied experiment needs, the gas-liquid variable valve can the designed pressure of stability test, axial compression device and confined pressure cavity can provide the authenticity and the homogeneity of axial compression and confined pressure and assurance sample pressurized for sample under the pressurized water tank effect, constant temperature water bath apparatus can be preheating to experimental sample different temperature and can provide the test water identical with specimen temperature for experimental provision, vacuum suction device energy test sample is saturated fast, the vacuum transparent design of confined pressure cavity can guarantee constant and process of the test visual of test sample temperature in the cavity, sealing nut, O-ring seal, band, sealing bag and gasket seal have guaranteed the sealing of whole test, the throw of poston braking can be adjusted the active state with the Control Shaft pressure device, considered that the real-time change of sample porosity in the experimentation and various valve and device feature are by by computer control, the real-time monitoring of test figure and the robotization of experimentation control have been realized, make things convenient for the record and the processing of data, the whole test device can be according to the actual condition of adopting soil sample, measure the different temperatures of the soil body, different axial compressions, infiltration coefficient under different confined pressures and the interaction condition, test findings can reflect the Penetration Signature of the soil body really.

Description of drawings

Accompanying drawing is the structural representation of the utility model test unit

Embodiment

Below in conjunction with accompanying drawing the utility model is explained in further detail: see accompanying drawing

A kind of controllable temperature soil body three-axis infiltration experiment device, the confined pressure cavity 14 of test unit and confined pressure cavity loam cake 9 constitute seal chamber, confined pressure cavity 14 is the transparent sandwich shape, interlayer is a vacuum, play insulation effect, confined pressure cavity loam cake 9 is provided with vent valve, axial compression device 10 is positioned at confined pressure cavity 14 and confined pressure cavity loam cake 9 constitutes seal chamber, axial compression device 10 is provided with throw of poston braking 11, throw of poston braking 11 is opened, the axial deformation that test unit will be measured sample in real time causes the variation of sample porosity, throw of poston braking 11 is closed, guarantee that then sample axially under the head effect axial deformation is not taking place, pipeline on the axial compression device 10 passes confined pressure cavity loam cake 9 and is fixed in the below of confined pressure cavity loam cake 9 by sealing nut, pipeline on the axial compression device 10 is connected with vacuum suction device 5, be provided with water level display 6 and gas solenoid valve on the pipeline successively, axial compression device 10 belows are provided with permeable headkerchief 12, go up between permeable headkerchief 12 and the axial compression device 10 and be provided with O-ring seal, go up and have upward seal groove 13 of annular on permeable headkerchief 12 sidewalls, permeable headkerchief 16 is positioned at the bottom of confined pressure cavity 14 down, pipeline on the permeable headkerchief 16 passes the bottom of confined pressure cavity 14 and seals by sealing nut down, have annular lower seal groove cavity 15 on permeable headkerchief 16 sidewalls down, constant temperature water bath apparatus 7 by pipeline respectively with following permeable headkerchief 16 on pipeline, be respectively arranged with liquid control valve on confined pressure pressurized water tank 4 inlets and connection of axial compression pressurized water tank 1 inlet and the pipeline, axial compression pressurized water tank 1 and confined pressure pressurized water tank 4 are outside equipped with heat-insulation layer, between pipeline that descends permeable headkerchief 16 and liquid control valve, be disposed with liquid electromagnetic valve and flow measurement device, liquid electromagnetic valve is connected with liquid volume measurement instrument 17, axial compression device 10, permeable headkerchief 16 was on same axial line under upward permeable headkerchief 12 reached, pressed gas device 18 by gas pipe line respectively with the first gas-liquid variable valve 2, be respectively equipped with gas solenoid valve on the air intake opening connection of the second gas-liquid variable valve 3 and the gas pipe line, the first gas-liquid variable valve 2, the gas outlet of the second gas-liquid variable valve 3 by gas pipe line respectively with axial compression pressurized water tank 1, the air intake opening of confined pressure pressurized water tank 4 connects, axial compression pressurized water tank 1, the top of confined pressure pressurized water tank 4 is respectively arranged with vent valve, the liquid storehouse of the first gas-liquid variable valve 2 is connected with pipeline between the vacuum suction device 5 with the liquid outlet of axial compression pressurized water tank 1 and axial compression device 10 respectively by aqueduct, and the pipeline connection port between axial compression device 10 and the vacuum suction device 5 is between water level display 6 and gas solenoid valve, the liquid storehouse of the second gas-liquid variable valve 3 is connected with the liquid outlet of confined pressure pressurized water tank 4 and the inlet of confined pressure cavity 14 respectively by aqueduct, the aqueduct that connects the axial compression pressurized water tank 1 and the first gas-liquid variable valve 2 is provided with pressure measurer, pressure measurer is positioned at the plane at the place, bottom of permeable headkerchief 12, be disposed with flow measurement device on the aqueduct of the connection confined pressure cavity 14 and the second gas-liquid variable valve 3, liquid control valve and pressure measurer and flow measurement device, liquid control valve is between confined pressure cavity 14 and confined pressure pressurized water tank 4, and all aqueducts are outside equipped with heat-insulation layer.

The principle of work of the utility model test unit:

During experiment, inspection apparatus equipment is to guarantee gas solenoid valve, liquid electromagnetic valve, liquid control valve, pressure measurer, flow measurement device, vent valve, water level display 6, vacuum suction device 5, the Data Control line of constant temperature water bath apparatus 7 and liquid volume measurement instrument 17 is connected with computing machine, at this moment, sealing nut, gasket seal, band, O-ring seal, sealing bag, confined pressure cavity loam cake 9, axial compression device 10, go up permeable headkerchief 12, permeable headkerchief 16 is parts to be installed down, other parts all connect complete, energized and open computing machine, guarantee all gas and liquid electromagnetic valve, each parts of liquid control valve and device are in closed condition, with last permeable headkerchief 12 and down permeable headkerchief 16 place the two ends of test sample respectively and put sealing bag and sealing bag is sealed in the last seal groove 13 of permeable headkerchief 12 and the lower seal groove cavity 15 of time permeable headkerchief 16 with O-ring seal, start constant temperature water bath apparatus 7 and regulate experimental temperature, be loaded on the sample of good seal in the large size sealing bag and put into thermostatted water bathing pool 8, until the temperature of constant temperature water bath apparatus 7 arrives the temperature that test is set; Gasket seal places confined pressure cavity 14 bottoms, place permeable headkerchief 16 down then successively, the sample of good seal, band, axial compression device 10 (is braked 11 folding conditions according to experiment needs control piston stroke, throw of poston braking 11 is opened, the axial deformation of measuring sample is in real time caused the variation of sample porosity, throw of poston braking 11 is closed, guarantee that then sample axially under the head effect axial deformation is not taking place), the pipeline of axial compression device 10 passes confined pressure cavity loam cake 9 and is fixed in the below of confined pressure cavity loam cake 9 by sealing nut, the confined pressure of screwing on cavity loam cake 9, on computers the pressure of the first gas-liquid variable valve 2 and the second gas-liquid variable valve 3 is adjusted to the force value of test design, open the liquid control valve on the vent valve of axial compression pressurized water tank 1 and the pipeline that links to each other with axial compression pressurized water tank 1 inlet, test water in the constant temperature water bath apparatus 7 is injected axial compression pressurized water tank 1 by pipeline, when water level arrives vent valve, vent valve and liquid control valve are closed automatically, open the liquid control valve on the vent valve on the confined pressure pressurized water tank 4 and the pipeline that links to each other with confined pressure pressurized water tank 4 inlets, test water in the constant temperature water bath apparatus 7 is injected confined pressure pressurized water tank 4 by pipeline, when water level arrives vent valve, vent valve and liquid control valve will be closed automatically, open connector at the liquid control valve that reaches on the pipeline between water level display 6 and the gas solenoid valve on the aqueduct that connects the confined pressure cavity 14 and the second gas-liquid variable valve 3, starting pressure gas device 18 is also opened pressed gas device 18 and the first gas-liquid variable valve 2, the second gas-liquid variable valve, 3 air intake openings connect the gas solenoid valve on the gas pipe line and regulate the speed of gas in the gas solenoid valve, with pressed gas the water drive in axial compression pressurized water tank 1 and the confined pressure pressurized water tank 4 is gone into pipeline, when water reaches connector between water level display 6 and gas solenoid valve on the pipeline and when connecting liquid control valve on the aqueduct of the confined pressure cavity 14 and the second gas-liquid variable valve 3, liquid control valve will cut out automatically, open the liquid control valve on the pipeline connecting tube on constant temperature water bath apparatus 7 and the following permeable headkerchief 16, when water reaches liquid control valve, liquid control valve will cut out automatically, air in all water pipes of experimental apparatus is all discharged at this moment, water level display 6 is connected with seal for pipe joints on the axial compression device 10, open between axial compression device 10 and the vacuum suction device 5 gas solenoid valve on the pipeline and start vacuum suction device 5 sample, go up permeable headkerchief 12, following permeable headkerchief 16, axial compression device 10, state is evacuated in water level display 6 and the pipeline, close gas solenoid valve and vacuum suction device 5 then, open the liquid control valve on the pipeline between constant temperature water bath apparatus 7 and the following permeable headkerchief 16, when test water arrives the indicating positions of water level display 6, liquid control valve between constant temperature water bath apparatus 7 and the following permeable headkerchief 16 on the pipeline will cut out automatically, open the vent valve on the confined pressure cavity loam cake 9 and connect confined pressure cavity 14 and the aqueduct of the second gas-liquid variable valve 3 on liquid control valve, when water reaches vent valve on the confined pressure cavity loam cake 9, liquid control valve and vent valve will be closed automatically, the closure of all solenoid valves is all controlled by the relative program in the computing machine in the aforesaid operations, at this moment, ready and all gas electromagnetism liquid electromagnetic valve of all preliminary works and liquid control valve all are in closed condition, the test software that starts in the computing machine is tested, in the process of the test device all parts startup or close by the test software controlled in the computing machine, computing machine is with the real-time discharge of real time record flow measurement device and liquid volume measurement instrument 17, and with flow measurement device, the water yield of liquid volume measurement instrument and the first gas-liquid variable valve 2, the force value of the second gas-liquid variable valve 3 is converted into the real-time porosity of test sample automatically, the head difference at sample two ends and the infiltration coefficient of sample, and finish the storage and the processing of test figure automatically, after test finishes, open and close experimental provision, clearance test sample and cleaning experiment equipment, guarantee the clean and dry of all pipelines, to guarantee carrying out smoothly of test next time, close all power supplys, guarantee the safety of test apparatus.

Claims (3)

1. controllable temperature soil body three-axis infiltration experiment device, it is characterized in that: the confined pressure cavity (14) of test unit and confined pressure cavity loam cake (9) constitute seal chamber, confined pressure cavity (14) is the transparent sandwich shape, confined pressure cavity loam cake (9) is provided with vent valve, axial compression device (10) is positioned at confined pressure cavity (14) and confined pressure cavity loam cake (9) constitutes seal chamber, axial compression device (10) is provided with throw of poston braking (11), pipeline on the axial compression device (10) passes confined pressure cavity loam cake (9) and is fixed in the below of confined pressure cavity loam cake (9) by sealing nut, pipeline on the axial compression device (10) is connected with vacuum suction device (5), be provided with water level display (6) and gas solenoid valve on the pipeline successively, axial compression device (10) below is provided with permeable headkerchief (12), go up between permeable headkerchief (12) and the axial compression device (10) and be provided with O-ring seal, go up and have upward seal groove (13) of annular on permeable headkerchief (12) sidewall, permeable headkerchief (16) is positioned at the bottom of confined pressure cavity (14) down, pipeline on the permeable headkerchief (16) passes the bottom of confined pressure cavity (14) and seals by sealing nut down, have annular lower seal groove cavity (15) on permeable headkerchief (16) sidewall down, constant temperature water bath apparatus (7) by pipeline respectively with following permeable headkerchief (16) on pipeline, be respectively arranged with liquid control valve on confined pressure pressurized water tank (4) inlet and connection of axial compression pressurized water tank (1) inlet and the pipeline, between pipeline that descends permeable headkerchief (16) and liquid control valve, be disposed with liquid electromagnetic valve and flow measurement device, liquid electromagnetic valve is connected with liquid volume measurement instrument (17), axial compression device (10), permeable headkerchief (16) was on same axial line under upward permeable headkerchief (12) reached, pressed gas device (18) by gas pipe line respectively with the first gas-liquid variable valve (2), be respectively equipped with gas solenoid valve on the air intake opening connection of the second gas-liquid variable valve (3) and the gas pipe line, the first gas-liquid variable valve (2), the gas outlet of the second gas-liquid variable valve (3) by gas pipe line respectively with axial compression pressurized water tank (1), the air intake opening of confined pressure pressurized water tank (4) connects, axial compression pressurized water tank (1), the top of confined pressure pressurized water tank (4) is respectively arranged with vent valve, the liquid storehouse of the first gas-liquid variable valve (2) is connected with pipeline between the vacuum suction device (5) with the liquid outlet of axial compression pressurized water tank (1) and axial compression device (10) respectively by aqueduct, and the pipeline connection port between axial compression device (10) and the vacuum suction device (5) is positioned between water level display (6) and the gas solenoid valve, the liquid storehouse of the second gas-liquid variable valve (3) is connected with the liquid outlet of confined pressure pressurized water tank (4) and the inlet of confined pressure cavity (14) respectively by aqueduct, the aqueduct that connects the axial compression pressurized water tank (1) and the first gas-liquid variable valve (2) is provided with pressure measurer, pressure measurer is positioned at the plane at the place, bottom of permeable headkerchief (12), is disposed with flow measurement device on the aqueduct of the connection confined pressure cavity (14) and the second gas-liquid variable valve (3), liquid control valve and pressure measurer and flow measurement device, liquid control valve is positioned between confined pressure cavity (14) and the confined pressure pressurized water tank (4).
2. a kind of controllable temperature soil body three-axis infiltration experiment device as claimed in claim 1 is characterized in that: described axial compression pressurized water tank (1) and confined pressure pressurized water tank (4) are outside equipped with heat-insulation layer.
3. a kind of controllable temperature soil body three-axis infiltration experiment device as claimed in claim 1, it is characterized in that: described aqueduct is outside equipped with heat-insulation layer.
CN2010206937123U 2010-12-31 2010-12-31 Temperature-controllable triaxial permeability test device for soil body CN201965078U (en)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102175583A (en) * 2010-12-31 2011-09-07 中国科学院武汉岩土力学研究所 Temperature-controllable three-axis soil permeability test device
CN102621043A (en) * 2012-03-31 2012-08-01 中联煤层气有限责任公司 Device for testing corrosion performance of carbon dioxide injection to coal rocks and detection method
CN104990856A (en) * 2015-07-16 2015-10-21 中国石油大学(华东) Apparatus for measuring permeability of low permeation rock core, and method thereof
CN105628574A (en) * 2014-10-29 2016-06-01 中国石油天然气股份有限公司 Rock sample porosity measurement method
CN110186831A (en) * 2019-06-04 2019-08-30 上海理工大学 Controllable and simulated atmosphere natural environment atmosphere-vegetation-soil body pilot system
CN110501272A (en) * 2019-07-25 2019-11-26 中国科学院武汉岩土力学研究所 The method for testing porous rock porosity and permeability simultaneously under the conditions of triaxial stress and pore pressure

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102175583A (en) * 2010-12-31 2011-09-07 中国科学院武汉岩土力学研究所 Temperature-controllable three-axis soil permeability test device
CN102175583B (en) * 2010-12-31 2012-11-07 中国科学院武汉岩土力学研究所 Temperature-controllable three-axis soil permeability test device
CN102621043A (en) * 2012-03-31 2012-08-01 中联煤层气有限责任公司 Device for testing corrosion performance of carbon dioxide injection to coal rocks and detection method
CN102621043B (en) * 2012-03-31 2014-04-09 中联煤层气有限责任公司 Device for testing corrosion performance of carbon dioxide injection to coal rocks and detection method
CN105628574A (en) * 2014-10-29 2016-06-01 中国石油天然气股份有限公司 Rock sample porosity measurement method
CN105628574B (en) * 2014-10-29 2019-04-09 中国石油天然气股份有限公司 The measurement method of rock sample porosity
CN104990856A (en) * 2015-07-16 2015-10-21 中国石油大学(华东) Apparatus for measuring permeability of low permeation rock core, and method thereof
CN104990856B (en) * 2015-07-16 2018-02-27 中国石油大学(华东) Measure the device and method of flow in low permeability core permeability
CN110186831A (en) * 2019-06-04 2019-08-30 上海理工大学 Controllable and simulated atmosphere natural environment atmosphere-vegetation-soil body pilot system
CN110501272A (en) * 2019-07-25 2019-11-26 中国科学院武汉岩土力学研究所 The method for testing porous rock porosity and permeability simultaneously under the conditions of triaxial stress and pore pressure

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