CN102410976A - Rapid testing device of permeability of rocks - Google Patents
Rapid testing device of permeability of rocks Download PDFInfo
- Publication number
- CN102410976A CN102410976A CN2011102197595A CN201110219759A CN102410976A CN 102410976 A CN102410976 A CN 102410976A CN 2011102197595 A CN2011102197595 A CN 2011102197595A CN 201110219759 A CN201110219759 A CN 201110219759A CN 102410976 A CN102410976 A CN 102410976A
- Authority
- CN
- China
- Prior art keywords
- loop
- pressure
- permeameter
- cylinder barrel
- rock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to a rapid testing device of permeability of rocks. The rapid testing device comprises an axial loading mechanism, at least one permeameter mounted on the axial loading mechanism, a permeation loop and a confining pressure loop, wherein the permeation loop and the confining pressure loop are connected with the permeameter; the permeameter comprises a cylinder barrel, a piston, a bottom plate, a pressure head, a porous disc and a rock sample; and the axial loading mechanism comprises a support, a screw rod, a dial indicator and a cushion block with a thrust bearing. The device provides confining pressure for the permeameter by virtue of a second plunger pump, and the plunger pump and/or a hand-operated pump and/is used for providing permeation pressure difference for the permeameter. The testing device can simultaneously perform permeability test on a plurality of rock samples, reduce the testing time and further reduce the testing cost. The device is simple to operate and reliable in performances and can be carried to a designated place by a vehicle to carry out test, thereby having extensive practicality.
Description
Technical field
The present invention relates to a kind of test unit of rock permeability characteristic, be used for testing fast the permeance property parameter of rock.
Background technology
The test of ground class material Penetration Signature is divided into on-the-spot test and laboratory examination two big classes.Although there is significant difference in the Penetration Signature of rock sample and rock mass, the infiltrative laboratory examination of rock sample is still the main method of present test rock mass Penetration Signature.The test that now current rock sample perviousness laboratory test methods and existing patented technology all are conceived to monolithic rock sample Penetration Signature, the Penetration Signature that can not test the polylith rock sample simultaneously, it is longer to accomplish the required permeability test cycle of Geotechnical Engineering.
In the test of present rock sample Penetration Signature, supercharger is generally adopted in the injection of permeation liquid.Because the restriction of the stroke of supercharger, time of penetration is shorter, and pressure reduction did not reach stationary value yet when permeability test finished sometimes.
Summary of the invention
The purpose of this invention is to provide a kind of rock permeability characteristic short-time test device, simultaneously the polylith rock sample is carried out testing permeability.
Rock permeability characteristic short-time test device of the present invention is by an axial load maintainer, is installed at least one permeameter on the said axial load maintainer and the infiltration loop and the confined pressure loop that are connected on the permeameter constitute.
Said permeameter is made up of cylinder barrel, piston, base plate, pressure head, porous disc and rock sample, and the cylinder barrel upper end is provided with piston, and base plate is fixedly connected on the bottom of cylinder barrel; Two ends are fixed with respectively between rock sample and the inner wall of cylinder of porous disc and pressure head and keep certain annular gap to be placed in the cylinder barrel; The internal diameter of said rock sample is coaxial with the internal diameter of cylinder barrel, and two pressure heads that are positioned at the rock sample two ends contact with the base plate face with piston respectively, and base plate is provided with penetrating fluid pipe that leads to pressure head and the confined pressure liquid pipe that leads to annular gap in the cylinder barrel; Rising pipe is located on the piston; Be communicated with the pressure head of contact piston, said penetrating fluid pipe connects the infiltration loop, and confined pressure liquid pipe is connected with the confined pressure loop.
Further, on base plate, be provided with the groove that matees with said pressure head, pressure head is placed in the said groove.Simultaneously, on the surface of contact of surface of contact, pressure head and the piston of surface of contact, base plate and the cylinder barrel of piston and cylinder barrel and base plate, be equipped with the O RunddichtringO of rubber material.
Said axial load maintainer is made up of support, screw rod, clock gauge and the cushion block that has a thrust bearing; Be provided with the boss that is used to place permeameter in the support bottom, screw rod be positioned at boss directly over, be movably connected on the support; Be connected with cushion block in the screw rod lower end, clock gauge is connected on the cushion block.
Preferably, said cushion block adopts sphere to contact with the lower end of screw rod, and is stressed evenly to guarantee permeameter.
Described infiltration loop comprises stop valve, pressure transducer, flow sensor, the diverting valve on the penetrating fluid pipe that is connected each permeameter in order and is connected in parallel on low-pressure permeability loop and the high-pressure osmosis loop on the diverting valve; Described low-pressure permeability loop is connected and composed by ram pump, surplus valve, tensimeter and filtrator; Be used for the infiltration of high osmosis rock sample; Utilize ram pump seepage pressure (poor) to be provided to the rock sample in the permeameter; It is stable that surplus valve is used to keep-up pressure, and filtrator is used to keep the permeation liquid cleaning, and tensimeter is used to observe seepage pressure (poor).Described high-pressure osmosis loop is connected to form by wobble pump and voltage stabilizer, is used for the infiltration of low-permeability rock sample, utilizes wobble pump to the rock sample in the permeameter seepage pressure (poor) to be provided, and voltage stabilizer is used to keep seepage pressure.
Further, be respectively equipped with retaining valve, be used for low-pressure permeability loop and high-pressure osmosis loop are isolated in the junction of low-pressure permeability loop and high-pressure osmosis loop and diverting valve.
Described confined pressure loop is connected to form by second ram pump, second surplus valve and second tensimeter, and described second surplus valve is used for keeping the constant of confined pressure.
Among the present invention, a plurality of permeameters shared same low-pressure permeability loop and high-pressure osmosis loop, while shared same confined pressure loop, the confined pressure loop provides pressure to a plurality of permeameters simultaneously with the infiltration loop, can test the penetration property of a plurality of rock samples simultaneously.
During test, porous disc, pressure head and rock sample are wrapped up in thermal contractible plastic cover and electrical adhesive tape envelope, with base plate, piston, cylinder barrel is coaxial is installed in the permeameter, piston moves with respect to cylinder barrel and makes rock sample bear axle pressure and distortion.Between rock sample and cylinder barrel, the annular gap is arranged, inject liquid during this time in the crack, rock sample is applied confined pressure by the confined pressure loop.The highly pressurised liquid that ram pump and/or wobble pump produce in the infiltration loop is transported to each permeameter lower end through diverting valve, and permeameter upper end and atmosphere apply the generation permeable pressure head in two ends up and down at rock sample.Axially load maintainer can be installed a plurality of permeameters, respectively permeameter is applied axial load by screw rod.
Rock permeability characteristic short-time test device of the present invention can integral installation on onboard control console, carry out the rock sample testing permeability in the place of user's appointment.
The beneficial effect of rock permeability characteristic short-time test device of the present invention comprises:
1) simultaneously the polylith rock sample is carried out permeability test, reduce test period, and reduce testing expenses;
2) by ram pump or wobble pump permeation liquid is provided continuously, permeable pressure head can reach stationary value;
3) this apparatus structure is simple, easy to operate, with low cost, can vehicle-mountedly make an experiment to the appointed place;
4) axially be provided with thrust bearing in the cushion block of load maintainer, can prevent that dial indicators rack from rotating, screw rod adopts sphere to contact with cushion block, can guarantee that the permeameter piston contacts with the close of cushion block in the screw rod rotation process.
Description of drawings
Fig. 1 is the structural representation of the said rock permeability characteristic of embodiment of the invention short-time test device.
Fig. 2 is the structural representation of permeameter among Fig. 1.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is the structural representation of axial load maintainer among Fig. 1.
The vertical view of Fig. 5 Fig. 4.
Among the figure: 1-permeameter, the axial load maintainer of 2-, 3-second ram pump, 4-stop valve, 5-flow sensor, 6-pressure transducer, 7-diverting valve; The 8-retaining valve, 9-voltage stabilizer, 10-tensimeter, 11-wobble pump, 12-surplus valve, 13-filtrator, 14-ram pump; 15-second surplus valve, 16-second tensimeter, 20-rising pipe, 21-piston, 22-pressure head, 23-cylinder barrel; The 24-porous disc, 25-rock sample, 26-annular gap, 27-O RunddichtringO, 28-base plate, 29-penetrating fluid pipe; 30-confined pressure liquid pipe, 31-support, 32-screw rod, 33-cushion block, 34-clock gauge, 35-boss.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are done further to describe.
The structure of rock permeability characteristic short-time test device is as shown in Figure 1, mainly is made up of permeameter 1, axial load maintainer 2, infiltration loop, confined pressure loop four major parts, and whole device is installed on the onboard control console.
The structure of permeameter 1 such as Fig. 2 are made up of cylinder barrel 23, piston 21, base plate 28, porous disc 24 and pressure head 22.Rock sample 25 two ends are stacked together with porous disc 24, pressure head 22 coaxial lines successively, with thermal contractible plastic tube, electrical adhesive tape parcel.Rock sample 25 behind the parcel is put into the groove on cylinder barrel 23 inner bottom platings 28, and piston 21 is pressed in the cylinder barrel 23, between rock sample 25 and cylinder barrel 23, forms annular gap 26.Between base plate 28, piston 21 and cylinder barrel 23, pressure head 22, seal with O RunddichtringO 27.As shown in Figure 3, on base plate 28, be provided with penetrating fluid pipe 29 and confined pressure liquid pipe 30, piston 21 is provided with rising pipe 20.
The structure of axial load maintainer 2 such as Fig. 4, Fig. 5; Be made up of support 31, screw rod 32, clock gauge 34 and the cushion block 33 that has a thrust bearing, be laid with 6 poles on the said support 31, each pole is gone up activity chain and is connected to a screw rod 32; Screw rod 32 lower end spheres are connected with cushion block 33; 33 times connection clock gauges 34 of cushion block are provided with the boss 35 that is used to place permeameter 1 on the bracket base below the pole, this axial load maintainer 2 can be placed 6 permeameters simultaneously.
The infiltration loop is connected to form by ram pump 14, wobble pump 11, surplus valve 12, retaining valve 8, diverting valve 7, pressure transducer 6, flow sensor 5, stop valve 4, voltage stabilizer 9, filtrator 13 and tensimeter 10, and ram pump 14 and wobble pump 11 are respectively applied for the infiltration of high osmosis and low-permeability rock sample.The liquid of ram pump 14 outputs provides low-pressure and big flow liquid through filtrator 13, retaining valve 8, diverting valve 7, pressure transducer 6, flow sensor 5, stop valve 4 to permeameter 1; Wobble pump 11 provides high pressure and low flow rate liquid through retaining valve 8, diverting valve 7, pressure transducer 6, flow sensor 5, stop valve 4 to permeameter 1.Between filtrator 13 and retaining valve 8, surplus valve 12 is set, avoids low excessively ram pump 14 overloads that cause of rock sample perviousness.The confined pressure loop is connected to form by second ram pump 3, second surplus valve 15 and second tensimeter 16, and second surplus valve 15 is used for keeping the constant of confined pressure.
Infiltration loop and confined pressure loop provide pressure to a plurality of permeameters simultaneously, test the penetration property of a plurality of rock samples simultaneously.
The course of work of rock permeability characteristic short-time test device is: rock sample, porous disc, pressure head with thermal contractible plastic cover and electrical adhesive tape sealing, are put into O property O-ring seal in the groove of pressure head.After in the groove of piston, putting into O property O-ring seal; Piston is inserted cylinder barrel; Put into cylinder barrel to packaged rock sample, the relative position of adjustment piston and cylinder barrel makes following pressure head concordant with the lower surface of cylinder barrel; And the annular gap between adjustment rock sample and the cylinder barrel, make the external diameter of rock sample coaxial with the internal diameter of cylinder barrel.After in the groove of base plate, putting into O property O-ring seal, cylinder barrel and base plate are coupled together with bolt, nut, plain washer and spring washer.On base plate, install penetrating fluid pipe and confined pressure liquid pipe.
Permeameter is placed on the boss of support, cushion block is placed on the permeameter, and rotating screw bolt makes the lower surface of cushion block contact with the upper surface of permeameter, and the clock gauge reading is returned to zero.Cushion block is provided with thrust bearing, so only with hand is helped clock gauge gently, can protect the clock gauge thimble.
Be rotated further screw rod, when the clock gauge reading stops operating during for preset value.
A plurality of permeameters according to after as above step is installed, are connected with the infiltration loop with the confined pressure loop respectively.Open stop valve, second ram pump that starts the confined pressure loop applies confined pressure to rock sample.After second surplus valve has liquid outflow and confined pressure to keep stablizing, start the ram pump in infiltration loop, to rock sample permeable pressure head is provided.Have or not liquid to flow out in the observation permeameter,, rock sample is continued pressurization with wobble pump if there is not liquid to flow out.The infiltration loop is provided with filtrator, can guarantee that permeation liquid impurity particle diameter is very little and does not influence the perviousness of rock sample.The infiltration loop is provided with voltage stabilizer, prevents the significantly vibration of permeable pressure head.The infiltration loop is provided with diverting valve, guarantees that ram pump and wobble pump are transported to the flow approximately equal of each permeameter.The confined pressure loop all is provided with stop valve with the infiltration loop, if when once the rock sample quantity of test is less than the permeameter quantity that load maintainer can install, can close corresponding stop valve.
The signal of infiltration loop upward pressure sensor and flow sensor is connected to computing machine through A/D converter and signal amplifier; And record permeable pressure head and flow; According to permeable pressure head and the flow sample gathered; Obtain the Penetration Signature of rock sample through linear regression, comprise that permeability, non-Darcy flow
factor and acceleration factor.
Rotating screw bolt makes the clock gauge reading reach next predetermined value respectively, repeats as above step, can test out the Penetration Signature of rock sample under the various deformation states.
Claims (9)
1. rock permeability characteristic short-time test device is characterized in that by an axial load maintainer, is installed at least one permeameter on the said axial load maintainer and the infiltration loop and the confined pressure loop that are connected on the permeameter constitute;
Said permeameter is made up of cylinder barrel, piston, base plate, pressure head, porous disc and rock sample, and the cylinder barrel upper end is provided with piston, and base plate is fixedly connected on the bottom of cylinder barrel; Two ends are fixed with respectively between rock sample and the inner wall of cylinder of porous disc and pressure head and keep certain annular gap to be placed in the cylinder barrel; The internal diameter of said rock sample is coaxial with the internal diameter of cylinder barrel, and two pressure heads that are positioned at the rock sample two ends contact with the base plate face with piston respectively, and base plate is provided with penetrating fluid pipe that leads to pressure head and the confined pressure liquid pipe that leads to annular gap in the cylinder barrel; Rising pipe is located on the piston; Be communicated with the pressure head of contact piston, said penetrating fluid pipe connects the infiltration loop, and confined pressure liquid pipe is connected with the confined pressure loop;
Said axial load maintainer is made up of support, screw rod, clock gauge and the cushion block that has a thrust bearing; Be provided with the boss that is used to place permeameter in the support bottom, screw rod be positioned at boss directly over, be movably connected on the support; Be connected with cushion block in the screw rod lower end, clock gauge is connected on the cushion block.
2. rock permeability characteristic short-time test device according to claim 1; It is characterized in that described infiltration loop comprises stop valve, pressure transducer, flow sensor, the diverting valve that is connected in order on the penetrating fluid pipe and is connected in parallel on low-pressure permeability loop and the high-pressure osmosis loop on the diverting valve; Described low-pressure permeability loop is connected and composed by ram pump, surplus valve, tensimeter and filtrator, and described high-pressure osmosis loop is connected to form by wobble pump and voltage stabilizer.
3. rock permeability characteristic short-time test device according to claim 2 is characterized in that being respectively equipped with retaining valve in the junction of low-pressure permeability loop and high-pressure osmosis loop and diverting valve.
4. rock permeability characteristic short-time test device according to claim 2 is characterized in that permeameter shared same low-pressure permeability loop and high-pressure osmosis loop.
5. rock permeability characteristic short-time test device according to claim 1 is characterized in that described confined pressure loop is connected to form by second ram pump, second surplus valve and second tensimeter.
6. rock permeability characteristic short-time test device according to claim 5 is characterized in that the shared same confined pressure of permeameter loop.
7. rock permeability characteristic short-time test device according to claim 1 is characterized in that on base plate, being provided with the groove that matees with said pressure head, and pressure head is placed in the said groove.
8. rock permeability characteristic short-time test device according to claim 1 is characterized in that described cushion block contacts with screw rod lower end sphere.
9. rock permeability characteristic short-time test device according to claim 1 is characterized in that on the surface of contact of surface of contact, pressure head and the piston of surface of contact, base plate and the cylinder barrel of piston and cylinder barrel and base plate, being equipped with the O RunddichtringO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102197595A CN102410976A (en) | 2011-08-03 | 2011-08-03 | Rapid testing device of permeability of rocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102197595A CN102410976A (en) | 2011-08-03 | 2011-08-03 | Rapid testing device of permeability of rocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102410976A true CN102410976A (en) | 2012-04-11 |
Family
ID=45913179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102197595A Pending CN102410976A (en) | 2011-08-03 | 2011-08-03 | Rapid testing device of permeability of rocks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102410976A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149341A (en) * | 2013-02-04 | 2013-06-12 | 辽宁工程技术大学 | Consolidation and penetration measuring device |
| CN103760088A (en) * | 2014-01-23 | 2014-04-30 | 西安科技大学 | Broken rock three-axis seepage testing system and method |
| CN102854130B (en) * | 2012-08-23 | 2015-05-13 | 铁道第三勘察设计院集团有限公司 | Combined type loading assembly for rock lateral confined expansion test |
| CN106353238A (en) * | 2016-10-31 | 2017-01-25 | 贵州大学 | Auxiliary device for permeability test of shale sample |
| CN109765161A (en) * | 2019-01-25 | 2019-05-17 | 中国矿业大学 | It is a kind of to utilize permeability test method and device that bucket offer osmotic pressure and confining pressure are provided |
| CN110160938A (en) * | 2019-06-24 | 2019-08-23 | 辽宁工程技术大学 | A kind of frequency conversion permeability apparatus for fragmented rock body water sand two phase fluid flow |
| CN116973291A (en) * | 2023-09-21 | 2023-10-31 | 石家庄铁道大学 | Rock stratum water pressure in-situ stability and transient integrated permeability measurement device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1661627A1 (en) * | 1989-04-24 | 1991-07-07 | Ярославский политехнический институт | Method for determining ground filtration coefficient |
| US20020029615A1 (en) * | 2000-06-23 | 2002-03-14 | Roland Lenormand | Method of evaluating physical parameters of an underground reservoir from fock cuttings taken therefrom |
| CN201188081Y (en) * | 2008-01-29 | 2009-01-28 | 成都理工大学 | Rock high voltage infiltration experiment system |
| CN101387598A (en) * | 2008-10-08 | 2009-03-18 | 中国科学院武汉岩土力学研究所 | Rock porosity real-time test device under action of Chemosmosis and creep coupling |
| CN202166597U (en) * | 2011-08-03 | 2012-03-14 | 山西潞安环保能源开发股份有限公司 | Rapid testing device for permeability of rock |
-
2011
- 2011-08-03 CN CN2011102197595A patent/CN102410976A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1661627A1 (en) * | 1989-04-24 | 1991-07-07 | Ярославский политехнический институт | Method for determining ground filtration coefficient |
| US20020029615A1 (en) * | 2000-06-23 | 2002-03-14 | Roland Lenormand | Method of evaluating physical parameters of an underground reservoir from fock cuttings taken therefrom |
| CN201188081Y (en) * | 2008-01-29 | 2009-01-28 | 成都理工大学 | Rock high voltage infiltration experiment system |
| CN101387598A (en) * | 2008-10-08 | 2009-03-18 | 中国科学院武汉岩土力学研究所 | Rock porosity real-time test device under action of Chemosmosis and creep coupling |
| CN202166597U (en) * | 2011-08-03 | 2012-03-14 | 山西潞安环保能源开发股份有限公司 | Rapid testing device for permeability of rock |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854130B (en) * | 2012-08-23 | 2015-05-13 | 铁道第三勘察设计院集团有限公司 | Combined type loading assembly for rock lateral confined expansion test |
| CN103149341A (en) * | 2013-02-04 | 2013-06-12 | 辽宁工程技术大学 | Consolidation and penetration measuring device |
| CN103760088A (en) * | 2014-01-23 | 2014-04-30 | 西安科技大学 | Broken rock three-axis seepage testing system and method |
| CN103760088B (en) * | 2014-01-23 | 2016-01-27 | 西安科技大学 | Fractured rock three axle seepage tests system and method |
| CN106353238A (en) * | 2016-10-31 | 2017-01-25 | 贵州大学 | Auxiliary device for permeability test of shale sample |
| CN109765161A (en) * | 2019-01-25 | 2019-05-17 | 中国矿业大学 | It is a kind of to utilize permeability test method and device that bucket offer osmotic pressure and confining pressure are provided |
| CN110160938A (en) * | 2019-06-24 | 2019-08-23 | 辽宁工程技术大学 | A kind of frequency conversion permeability apparatus for fragmented rock body water sand two phase fluid flow |
| CN110160938B (en) * | 2019-06-24 | 2024-05-03 | 辽宁工程技术大学 | Variable-frequency infiltration device for breaking rock mass water-sand two-phase seepage |
| CN116973291A (en) * | 2023-09-21 | 2023-10-31 | 石家庄铁道大学 | Rock stratum water pressure in-situ stability and transient integrated permeability measurement device |
| CN116973291B (en) * | 2023-09-21 | 2023-12-19 | 石家庄铁道大学 | Rock stratum water pressure in-situ stability and transient integrated permeability measurement device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202166597U (en) | Rapid testing device for permeability of rock | |
| CN102410976A (en) | Rapid testing device of permeability of rocks | |
| CN104596905B (en) | Device and method for measuring permeability of rock in fracturing process | |
| CN110749497B (en) | Rock creep triaxial test system and method for continuous water environment effect | |
| CN105158144B (en) | A kind of matrix of coal deformation mechanics parameter test method | |
| CN201716254U (en) | Concrete permeability testing device | |
| CN104964878A (en) | Triaxial test system and method for unsaturated soil multi-field coupling | |
| CN204789158U (en) | Triaxial test device of many field couplings of unsaturated soil | |
| CN102324202B (en) | Self-circulation axial-radial seepage Darcy law experimental apparatus | |
| CN103616279B (en) | For the hoop pressue device of large-diameter Hopkinson pressure bar | |
| CN103776979A (en) | Simulation test method and device for inhibiting methane desorption effect by coal seam water injection | |
| CN103712740B (en) | Flat pressure sensor dynamic high-pressure calibrating installation | |
| CN105866000A (en) | Seepage testing apparatus and method for rock with single fracture | |
| CN104483202A (en) | Test system for rock breaking mode at high ground stress and osmotic pressure | |
| CN205103247U (en) | Real triaxial rock core holder | |
| CN114965077A (en) | Automatic high-precision rock expansion test device and application method thereof | |
| CN104020092A (en) | Consolidation pore water pressure combined test device and method | |
| CN105699202B (en) | A kind of hydraulic device measuring Mechanics Parameters of Rock Mass | |
| CN109060504A (en) | Soil and structure interface testing machine | |
| CN105486843A (en) | Soil body permeation-adsorption tester and testing method thereof | |
| CN103091160B (en) | Geotechnical compression test hydraulic system and testing method | |
| CN216208442U (en) | Permeameter | |
| CN107300507B (en) | Axial-loading and axial-unloading dual-purpose triaxial seepage experiment box and using method | |
| CN205138906U (en) | A test device for measuring rock shear creep characteristic | |
| CN102854073B (en) | Embankment deformation monitoring model experiment device based on displacement tracing technology, and method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20120411 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |