CN108181149B - Preparation device and method of gas-containing soil - Google Patents
Preparation device and method of gas-containing soil Download PDFInfo
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- CN108181149B CN108181149B CN201810014580.8A CN201810014580A CN108181149B CN 108181149 B CN108181149 B CN 108181149B CN 201810014580 A CN201810014580 A CN 201810014580A CN 108181149 B CN108181149 B CN 108181149B
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- 239000002689 soil Substances 0.000 title claims abstract description 74
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title description 5
- 239000004677 Nylon Substances 0.000 claims abstract description 75
- 229920001778 nylon Polymers 0.000 claims abstract description 75
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 26
- 238000006073 displacement reaction Methods 0.000 claims description 18
- 239000004575 stone Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 229920006395 saturated elastomer Polymers 0.000 claims description 16
- 229920001971 elastomer Polymers 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000004927 clay Substances 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to the technical field of indoor geotechnical tests and relates to a preparation device and a preparation method of gas-containing soil.A nylon pipe interface is respectively arranged on the same side of a lower sample base and an upper sample base and is respectively connected with a fourth nylon pipe and a third nylon pipe through the nylon pipe interface; the fourth nylon pipe is connected with the first three-way valve through the first valve, the first nylon pipe is connected with the third nylon pipe and the second three-way valve respectively, the second three-way valve is connected with the first gas-liquid displacer pipeline after being communicated with the first three-way valve, the second nylon pipe is connected to the top of the sandy soil sample, the second nylon pipe is connected with the second gas-liquid displacer pipeline through the third valve, the preparation process of the gas-containing soil sample is simple, the operation is convenient, and the cost is saved.
Description
The technical field is as follows:
the invention belongs to the technical field of indoor geotechnical tests and relates to a device and a method for preparing gas-containing soil.
Background art:
a large amount of natural gas hydrate (commonly called as combustible ice) resources are stored in the frozen soil areas of the south China sea, the east China sea and the land, the natural gas hydrate is very sensitive to temperature and pressure conditions, a large amount of natural gas can be decomposed by slight disturbance, the gas is distributed in pores in a free bubble form, soil layers are changed into gas-containing soil, mechanical properties are changed, particularly the rigidity and the strength of the soil layers are reduced, the property deterioration can cause disastrous accidents such as landslide, liquefaction, foundation subsidence and the like, and serious security threats are brought to ocean engineering.
At present, the research on the gas-containing soil is less at home and abroad, the research on the mechanical property of the gas-containing soil is rarely related, the research is limited by the difficulties and the defects of the field coring and in-situ experimental technology, and the research on the mechanical property of the gas-containing soil energy is generally carried out by utilizing an indoor geotechnical test. The triaxial testing machine has extensive application in indoor geotechnical test, and the preparation of current air-bearing soil sample is realized through reforming transform triaxial testing machine mostly, but prior art has following problem: firstly, the equipment is large in modification amount, and generally requires a heater, a constant temperature device, a reaction kettle and the like; secondly, the required test materials are more, such as sodium bicarbonate, tetrahydrofuran, zeolite particles and the like; thirdly, the steps are complex; fourthly, the requirement on the operation level of experimenters is high. Therefore, a novel device and a method for preparing the gas-containing soil are urgently needed to be designed.
The invention content is as follows:
the invention aims to overcome the defects in the prior art, and provides a device and a method for preparing gas-containing soil, which are designed and provided, so that quantitative control of different gas contents is realized by modifying the traditional triaxial test system, and a gas-containing soil sample meeting the experimental requirements is prepared.
In order to achieve the purpose, the main structure of the gas-containing soil preparation device comprises a first gas-liquid displacer, a heat shrinkable tube, a first three-way valve, a first valve, a second three-way valve, a back pressure controller interface, a third valve, a second gas-liquid displacer, a first nylon tube, a geotechnical triaxial tester base, a geotechnical triaxial tester, an axial displacement bracket, a displacement sensor, a pressure chamber base, a first confining pressure controller interface, a second confining pressure controller interface, a pressure chamber pull rod, a screw rod screw, a force transmission rod, a second nylon tube, a third nylon tube, a fourth nylon tube, a sandy soil sample, an upper permeable stone, a lower permeable stone, a sample lower base, a sample upper base, a pressure chamber top seat, an O-shaped ring groove, a nylon tube interface, a first rubber gasket, a clay plate and a second rubber gasket; the bottom of the geotechnical triaxial tester is provided with a geotechnical triaxial tester base, the side surface of the geotechnical triaxial tester is provided with a second confining pressure controller interface, the upper part of the geotechnical triaxial tester is provided with an axial displacement bracket, the axial displacement bracket is provided with a displacement sensor, the displacement sensor is right opposite to the pressure chamber base, and the bottom of the pressure chamber base is provided with a first confining pressure controller interface; a lower sample base is arranged in the middle of the top of the pressure chamber base, an upper sample base is arranged above the lower sample base, nylon pipe interfaces are arranged on the same sides of the lower sample base and the upper sample base, the lower sample base and the upper sample base are respectively connected with a fourth nylon pipe and a third nylon pipe through the nylon pipe interfaces, an O-shaped ring groove is formed in the upper portion of the upper sample base, a first rubber pad and a second rubber pad are sealed between the upper sample base and the lower sample base to form a core cavity, and a clay plate is arranged in the core cavity; the top of the upper sample base is provided with a lower permeable stone, the top of the lower permeable stone is provided with a sandy soil sample, the top of the sandy soil sample is provided with an upper permeable stone, the upper part of the upper permeable stone is sequentially provided with a force transmission rod and a pressure chamber top seat from bottom to top, the pressure chamber top seat is connected with the pressure chamber base through a pressure chamber pull rod, and the top of the pressure chamber top seat is provided with a screw rod screw; the fourth nylon pipe is connected with the first three-way valve through a first valve, the third nylon pipe is connected with one end of the first nylon pipe through a second valve, the other end of the first nylon pipe is connected with the second three-way valve, a back pressure controller interface is connected to the second three-way valve, the second three-way valve is connected with the first gas-liquid displacer pipeline after being communicated with the first three-way valve, and the pipeline between the first gas-liquid displacer and the first three-way valve is in sealing connection through a heat shrink pipe; the top of the sandy soil sample is connected with a second nylon pipe, the second nylon pipe is connected with a second gas-liquid displacer pipeline through a third valve, and the pipeline between the third valve and the second gas-liquid displacer is in sealing connection through a heat-shrinkable tube.
The pipeline connecting the third valve and the second gas-liquid displacer and the pipeline connecting the first gas-liquid displacer and the first three-way valve are high-pressure hoses with the diameter of 3mm or nylon tubes, and the pressure-resistant limit of the high-pressure hoses is larger than the water pressure in a sandy soil sample.
The invention can prepare saturated samples and gas-containing soil samples by adopting the gas-containing soil preparation device, and the specific preparation process comprises the following steps:
(1) preparing a saturated sample: sequentially connecting a back pressure controller interface, a first nylon pipe, a second valve and a third nylon pipe, preparing a saturated sample by adopting a standard GBT 50123-1999 geotechnical test method, screwing a screw rod to be tightly connected with a pressure chamber base, injecting water and keeping the confining pressure of 5-30kPa to enable the sandy soil sample to be upright, wherein the specific numerical value is determined according to the upright condition of the sandy soil sample; the external back pressure controller and confining pressure controller are arranged for initial saturation, when the pore water pressure coefficient B of the sandy soil sample is more than or equal to 0.90, the saturation of the sample is further improved through back pressure saturation, and when the pore water pressure coefficient B is more than or equal to 0.98, the preparation of the saturated sandy soil sample is finished; when the prepared saturated sandy soil sample is tested, the backpressure controller interface, the second three-way valve, the first nylon pipe and the third nylon pipe are sequentially connected through the control valve, and the test is carried out;
(2) preparing a sample containing air soil: closing the second valve, opening the third valve and the first valve, turning the first three-way valve to be connected with the first gas-liquid displacer, slowly pushing the second gas-liquid displacer to enable nitrogen in the second gas-liquid displacer to sequentially pass through the heat shrink tube, the third valve and the second nylon tube to enter the sandy soil sample, simultaneously discharging water with the same volume in the sandy soil sample, enabling the discharged water to enter the first gas-liquid displacer through the fourth nylon tube, the first valve, the first three-way valve and the heat shrink tube to complete preparation of the gas-containing soil sample, and performing geotechnical test on the prepared gas-containing soil sample according to a preset stress path.
Compared with the prior art, the invention adopts the modified assembled sample base, is assisted by pipeline connection and valve control, has simple preparation process of the sample containing gas-soil, is convenient to operate, saves the cost, can quickly prepare the sample containing gas-soil by using less materials, and can simultaneously prepare the saturated sample and the sample containing gas-soil.
Description of the drawings:
FIG. 1 is a schematic diagram of the main structure of the apparatus for preparing gas-containing soil according to the present invention.
Fig. 2 is a schematic cross-sectional structure diagram of the upper and lower sample bases according to the present invention.
Fig. 3 is a schematic diagram of a split structure of an upper base and a lower base of a sample according to the present invention.
The specific implementation mode is as follows:
the invention is further illustrated by the following examples in conjunction with the accompanying drawings.
Example (b):
the main structure of the gas-containing soil preparation device in this embodiment includes a first gas-liquid displacer 1, a heat shrink tube 2, a first three-way valve 3, a first valve 4, a second valve 5, a second three-way valve 6, a back pressure controller interface 7, a third valve 8, a second gas-liquid displacer 9, a first nylon tube 10, a triaxial geotechnical tester base 11, a triaxial geotechnical tester 12, an axial displacement bracket 13, a displacement sensor 14, a pressure chamber base 15, a first confining pressure controller interface 16, and a second confining pressure controller interface 17, a pressure chamber pull rod 18, a screw rod screw 19, a dowel bar 20, a second nylon tube 21, a third nylon tube 22, a fourth nylon tube 23, a sandy soil sample 24, an upper permeable stone 25, a lower permeable stone 26, a sample lower base 27, a sample upper base 28, a pressure chamber top base 29, an O-shaped ring groove 30, a nylon tube interface 31, a first rubber pad 32, a clay plate 33 and a second rubber pad 34; the bottom of the geotechnical triaxial tester 12 is provided with a geotechnical tester base 11, the side surface of the geotechnical triaxial tester 12 is provided with a second confining pressure controller interface 17, the upper part of the geotechnical triaxial tester 12 is provided with an axial displacement bracket 13, the axial displacement bracket 13 is provided with a displacement sensor 14, the displacement sensor 14 is over against a pressure chamber base 15, and the bottom of the pressure chamber base 15 is provided with a first confining pressure controller interface 16; a lower sample base 27 is arranged in the middle of the top of the pressure chamber base 15, an upper sample base 28 is arranged above the lower sample base 27, nylon tube interfaces 31 are arranged on the same sides of the lower sample base 27 and the upper sample base 28, the lower sample base 27 and the upper sample base 28 are respectively connected with a fourth nylon tube 23 and a third nylon tube 22 through the nylon tube interfaces 31, an O-shaped ring groove 30 is formed in the upper portion of the upper sample base 28, a first rubber pad 32 and a second rubber pad 34 are sealed between the upper sample base 28 and the lower sample base 27 to form a core cavity, and a clay plate 33 is arranged in the core cavity; a lower permeable stone 26 is arranged on the top of the sample upper base 28, a sandy soil sample 24 is arranged on the top of the lower permeable stone 26, an upper permeable stone 25 is arranged on the top of the sandy soil sample 24, a dowel bar 20 and a pressure chamber top seat 29 are sequentially arranged on the upper part of the upper permeable stone 25 from bottom to top, the pressure chamber top seat 29 is connected with a pressure chamber base 15 through a pressure chamber pull rod 18, and a screw rod screw 19 is arranged on the top of the pressure chamber top seat 29; a fourth nylon pipe 23 is connected with a first three-way valve 3 through a first valve 4, a third nylon pipe 22 is connected with one end of a first nylon pipe 10 through a second valve 5, the other end of the first nylon pipe 10 is connected with a second three-way valve 6, a back pressure controller interface 7 is connected on the second three-way valve 6, the second three-way valve 6 is connected with the first three-way valve 3 and then is connected with a first gas-liquid displacer 1 through a pipeline, and the pipeline between the first gas-liquid displacer 1 and the first three-way valve 3 is in sealing connection through a heat shrink tube 2; the top of the sandy soil sample 24 is connected with a second nylon pipe 21, the second nylon pipe 2 is connected with a second gas-liquid displacer 9 through a third valve 8, and the pipeline between the third valve 8 and the second gas-liquid displacer 9 is hermetically connected by a heat shrink tube 2.
The pipeline connecting the valve and the gas-liquid displacer in the embodiment is a high-pressure hose with the diameter of 3mm or a nylon pipe high-pressure hose, and the pressure-resistant limit of the hose is larger than the water pressure in the sandy soil sample 24.
This embodiment adopts contain gas soil preparation facilities can prepare saturated sample and contain the gas soil sample, and specific preparation process is:
(1) preparing a saturated sample: sequentially connecting a back pressure controller interface 7, a first nylon pipe 10, a second valve 5 and a third nylon pipe 22, preparing a saturated sample by adopting a standard GBT 50123-1999 of a geotechnical test method, tightly connecting a screw rod screw 19 with a pressure chamber base 15, injecting water and keeping the confining pressure of 5-30kPa to enable a sandy soil sample 24 to be upright, wherein the specific numerical value is determined according to the upright condition of the sandy soil sample 24; the external back pressure controller and confining pressure controller are arranged for initial saturation, when the pore water pressure coefficient B of the sandy soil sample 24 is larger than or equal to 0.90, the saturation of the sample is further improved through back pressure saturation until B is larger than or equal to 0.98, and the preparation of the saturated sandy soil sample is finished; when the prepared saturated sandy soil sample is tested, the backpressure controller interface 7, the second three-way valve 6, the first nylon pipe 10 and the third nylon pipe 22 are sequentially connected through the control valve, and the test is carried out;
(2) preparing a sample containing air soil: closing the second valve 5, opening the third valve 8 and the first valve 4, turning the first three-way valve 3 to be connected with the first gas-liquid displacer 1, slowly pushing the second gas-liquid displacer 9, enabling nitrogen in the second gas-liquid displacer to sequentially pass through the heat-shrinkable tube 2, the third valve 8 and the second nylon tube 21 to enter the sandy soil sample 24, simultaneously discharging water with the same volume in the sandy soil sample 24, enabling the discharged water to enter the first gas-liquid displacer 1 through the fourth nylon tube 23, the first valve 4, the first three-way valve 3 and the heat-shrinkable tube 2, completing preparation of the gas-containing soil sample, and carrying out a geotechnical test on the prepared gas-containing soil sample according to a preset stress path.
Claims (2)
1. A device for preparing gas-containing soil is characterized in that a main body structure comprises a first gas-liquid displacer, a heat shrink tube, a first three-way valve, a first valve, a second three-way valve, a back pressure controller interface, a third valve, a second gas-liquid displacer, a first nylon tube, a geotechnical three-axis tester base, a geotechnical three-axis tester, an axial displacement bracket, a displacement sensor, a pressure chamber base, a first confining pressure controller interface, a second confining pressure controller interface, a pressure chamber pull rod, a screw rod screw, a force transmission rod, a second nylon tube, a third nylon tube, a fourth nylon tube, a sandy soil sample, an upper permeable stone, a lower permeable stone, a sample lower base, a sample upper base, a pressure chamber top seat, an O-shaped ring groove, a nylon tube interface, a first rubber gasket, a clay plate and a second rubber gasket; the bottom of the geotechnical triaxial tester is provided with a geotechnical triaxial tester base, the side surface of the geotechnical triaxial tester is provided with a second confining pressure controller interface, the upper part of the geotechnical triaxial tester is provided with an axial displacement bracket, the axial displacement bracket is provided with a displacement sensor, the displacement sensor is right opposite to the pressure chamber base, and the bottom of the pressure chamber base is provided with a first confining pressure controller interface; a lower sample base is arranged in the middle of the top of the pressure chamber base, an upper sample base is arranged above the lower sample base, nylon tube interfaces are arranged on the same sides of the lower sample base and the upper sample base, the lower sample base is connected with a fourth nylon tube through the nylon tube interface, the upper sample base is connected with a third nylon tube through the nylon tube interface, an O-shaped ring groove is formed in the upper portion of the upper sample base, a first rubber gasket and a second rubber gasket are sealed between the upper sample base and the lower sample base to form a core cavity, and a clay plate is arranged in the core cavity; the top of the upper sample base is provided with a lower permeable stone, the top of the lower permeable stone is provided with a sandy soil sample, the top of the sandy soil sample is provided with an upper permeable stone, the upper part of the upper permeable stone is sequentially provided with a force transmission rod and a pressure chamber top seat from bottom to top, the pressure chamber top seat is connected with the pressure chamber base through a pressure chamber pull rod, and the top of the pressure chamber top seat is provided with a screw rod screw; the fourth nylon pipe is connected with the first three-way valve through a first valve, the third nylon pipe is connected with one end of the first nylon pipe through a second valve, the other end of the first nylon pipe is connected with the second three-way valve, a back pressure controller interface is connected to the second three-way valve, the second three-way valve is connected with the first gas-liquid displacer pipeline after being communicated with the first three-way valve, and the pipeline between the first gas-liquid displacer and the first three-way valve is in sealing connection through a heat shrink pipe; the top of the sandy soil sample is connected with a second nylon pipe, the second nylon pipe is connected with a second gas-liquid displacer pipeline through a third valve, and the pipeline between the third valve and the second gas-liquid displacer is in sealing connection by adopting a heat-shrinkable tube; the device can be used for preparing saturated samples and gas-containing soil samples, and the specific preparation process comprises the following steps:
(1) preparing a saturated sample: sequentially connecting a back pressure controller interface, a first nylon pipe, a second valve and a third nylon pipe, preparing a saturated sample by adopting a standard GBT 50123-1999 geotechnical test method, screwing a screw rod to be tightly connected with a pressure chamber base, injecting water and keeping the confining pressure of 5-30kPa to enable the sandy soil sample to be upright, wherein the specific numerical value is determined according to the upright condition of the sandy soil sample; the external back pressure controller and confining pressure controller are arranged for initial saturation, when the pore water pressure coefficient B of the sandy soil sample is more than or equal to 0.90, the saturation of the sample is further improved through back pressure saturation, and when the pore water pressure coefficient B is more than or equal to 0.98, the preparation of the saturated sandy soil sample is finished; when the prepared saturated sandy soil sample is tested, the backpressure controller interface, the second three-way valve, the first nylon pipe and the third nylon pipe are sequentially connected through the control valve, and the test is carried out;
(2) preparing a sample containing air soil: closing the second valve, opening the third valve and the first valve, turning the first three-way valve to be connected with the first gas-liquid displacer, slowly pushing the second gas-liquid displacer to enable nitrogen in the second gas-liquid displacer to sequentially pass through the heat shrink tube, the third valve and the second nylon tube to enter the sandy soil sample, simultaneously discharging water with the same volume in the sandy soil sample, enabling the discharged water to enter the first gas-liquid displacer through the fourth nylon tube, the first valve, the first three-way valve and the heat shrink tube to complete preparation of the gas-containing soil sample, and performing geotechnical test on the prepared gas-containing soil sample according to a preset stress path.
2. The apparatus according to claim 1, wherein the pipeline connecting the third valve and the second gas-liquid displacer and the pipeline connecting the first gas-liquid displacer and the first three-way valve are all pipelines
The pressure resistance limit of the high-pressure hose is larger than the water pressure in the sandy soil sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810014580.8A CN108181149B (en) | 2018-01-08 | 2018-01-08 | Preparation device and method of gas-containing soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810014580.8A CN108181149B (en) | 2018-01-08 | 2018-01-08 | Preparation device and method of gas-containing soil |
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| Publication Number | Publication Date |
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| CN108181149A CN108181149A (en) | 2018-06-19 |
| CN108181149B true CN108181149B (en) | 2020-11-06 |
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| CN111337337B (en) * | 2020-03-20 | 2024-05-31 | 中国科学院武汉岩土力学研究所 | Device and method for preparing variable-density gas-containing soil sample based on zeolite displacement reaction |
| CN111474022B (en) * | 2020-03-20 | 2024-05-31 | 中国科学院武汉岩土力学研究所 | Sample preparation device and method capable of quantitatively preparing gas-containing soil samples with different densities |
| CN115126009B (en) * | 2022-06-10 | 2023-05-23 | 河海大学 | Device for reducing relative compactness of saturated sand field and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2539170Y (en) * | 2001-07-16 | 2003-03-05 | 香港理工大学 | Triaxial tester |
| CN102175539B (en) * | 2011-03-11 | 2012-12-26 | 北京交通大学 | Temperature-control pressure chamber system for unsaturated soil tri-axial apparatus |
| CN102944476B (en) * | 2012-12-05 | 2014-08-06 | 重庆交通大学 | Method for triaxial compression test in soil body water saturation-drainage cycle and device |
| CN103091173B (en) * | 2013-01-14 | 2015-07-15 | 桂林理工大学 | Triaxial test apparatus of soil under water-soil chemical action and method thereof |
| US9453829B2 (en) * | 2013-12-23 | 2016-09-27 | Shijiazhuang Tiedao University | Soil property test device |
| CN103792118B (en) * | 2014-01-21 | 2016-03-23 | 中国科学院武汉岩土力学研究所 | High pressure solution gas saturation testing device and the application in gassiness soil sample is manually prepared thereof |
| CN203719988U (en) * | 2014-01-21 | 2014-07-16 | 中国科学院武汉岩土力学研究所 | High-pressure dissolved gas saturation testing device |
| CN103969422B (en) * | 2014-05-08 | 2016-04-06 | 同济大学 | A kind of matric suction control methods of roadbed wetting-drying test |
| CN104155427A (en) * | 2014-08-08 | 2014-11-19 | 王平 | Low back pressure saturation method for loess liquidation experiment |
| CN104614256B (en) * | 2015-02-06 | 2017-05-24 | 河海大学 | Temperature-controlled cold-hot cyclic unsaturated soil triaxial instrument |
| CN104833579A (en) * | 2015-04-24 | 2015-08-12 | 河海大学 | Test device and test method for testing strength change of soil body after occurrence of seepage deformation of dykes and dams |
| CN106124275B (en) * | 2016-08-11 | 2019-06-14 | 浙江大学 | A kind of production method and device of seabed gassiness bury |
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