CN104596817A - Pneumatic type coupling system for preparing large remolded clay and performing one-dimensional consolidation test - Google Patents
Pneumatic type coupling system for preparing large remolded clay and performing one-dimensional consolidation test Download PDFInfo
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- CN104596817A CN104596817A CN201510013848.2A CN201510013848A CN104596817A CN 104596817 A CN104596817 A CN 104596817A CN 201510013848 A CN201510013848 A CN 201510013848A CN 104596817 A CN104596817 A CN 104596817A
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Abstract
The invention discloses a pneumatic type coupling system for preparing large remolded clay and performing one-dimensional consolidation test, which can be used for preparing a large-size cylindrical sample or hollow cylindrical sample of remolded clay in geotechnical engineering, and also can be used for performing one-dimensional consolidation test of a large clay sample. The pneumatic type coupling system comprises a displacement measuring system, a combined pressure cavity, a pore-pressure measuring system, a discharged-water volume measuring system, a pneumatic loading system and an axial tightening member. The pneumatic type coupling system disclosed by the invention has the advantages that the loading is carried out by a pneumatic mode, the pressurization is stable, uniform, measurable and controllable, the loading pressure can be more than 1.6MPa and the defect of difficult application of high pressure in weight loading is effectively overcome; a vertical metal permeable stone is embedded into a rigid and transparent sleeve to form a vertical water discharging channel, so that the defects of single water discharging channel and slow consolidation speed of traditional consolidation equipment are overcome; the pressure cavity of the pneumatic type coupling system is the rigid and transparent sleeve, so that the pneumatic type coupling system has visibility and overcomes the defect of invisibility of a traditional consolidometer.
Description
Technical field
The present invention relates to the large-scale reshaped clay of a kind of vapour-pressure type to make and one-dimensional consolidation test coupled system, this device is Geotechnical Engineering sample preparation device, belong to Geotechnical Engineering surveying instrument manufacturing technology field, be applicable to make large-scale reshaped clay sample, the hollow cylinder clay sample in especially hollow torsion shear test.
Background technology
Geotechnical testament is the Main Means obtaining soil body physical and mechanical parameter, and National Standard of the People's Republic of China's " Standard for test methods of earthworks " (GB/T 50123-1999) is the guide specifications about geotechnical testament in China's prospecting, design field.In geotechnical testament, the acquisition of sample and preparation are the first steps of geotechnical testament, also be a most important step simultaneously, if sample prepares not science, specification, the various physical and mechanical parameters recorded then just lack credibility, and likely play misleading effect to further prospecting, design, construction.Meanwhile, in scientific research, the test of the indoor unit of the soil body is higher to the requirement of sample, the sample successful half of experimental study often of preparation science, superior, specification.
Soil body sample generally comprises undisturbed sample, disturbed soil sample and remolding soil specimens.The method for making of undisturbed sample and disturbed soil sample is just described in " Standard for test methods of earthworks " (GB/T 50123-1999).Manipulated soil is a kind of soil sample between undisturbed soil and disturbed soil, and it is by disturbed soil, by the test soil of artificial.Its specific definition can be expressed as: manipulated soil is through manually autotelic moulding, and having the disturbed soil structure of emulation undisturbed soil soil body outward appearance fundamental characteristics, is a kind of test soil body being applied to certain test purpose.At present, based on the reason of following two aspects, manipulated soil uses more and more frequent in geotechnical testament: first, in some cases, be difficult to obtain undisturbed soil, or procurement cost is too high, if use complete disturbed soil to replace undisturbed soil to carry out geotechnical testament, excessive test error can be caused; Secondly, in scientific research, often need to contrast test result, therefore require that test soil sample has good homogeneity and comparability, and the homogeneity of remolding soil specimens and comparability are obviously better than undisturbed sample and disturbed soil sample.
Meanwhile, along with the development of geotechnological instrument, the sample of more and more geotechnological appliance requires special shape, wherein most is representational is hollow cylinder sample required in hollow torsion shear test.This volume of sample is larger, if made by undisturbed soil, very loaded down with trivial details and one-tenth sample difficulty, the requirement being then difficult to meet the aspect such as saturation degree, homogeneity is made by hitting of advising in the specification method such as to smash, therefore a kind of instrument that directly can make hollow cylinder sample is needed badly, to meet the hollow torsion shear test requirement increasingly increased.
The research of overconsolidated soil is at present just increasing.Natural overconsolidated soil, with very large contingency and region, is difficult to obtain, therefore needs manual manufacture overconsolidated soil.Manual manufacture overconsolidated soil needs to carry out in testing tool before, cost plenty of time, and poor effect.
Summary of the invention
technical matters to be solved by this invention be to provide a kind of draining more smooth and easy, there is visuality and the large-scale reshaped clay of the higher vapour-pressure type of experimental precision makes and one-dimensional consolidation test coupled system.
The invention provides the large-scale reshaped clay of a kind of vapour-pressure type to make and one-dimensional consolidation test coupled system, comprise rigid transparent sleeve, base and top cover, described rigid transparent ferrule configuration has the vertical vertical permeable stone arranged, and the upper bush groove grafting that the upper end of described rigid transparent sleeve and the lower surface of top cover are offered also is sealed and matched, is sealed and matched in lower sleeve groove that lower end embeds on base upper surface; The space that top cover, rigid transparent sleeve and base surround is divided into the air chamber on top and the loading room of bottom by trapping end board, is configured with horizontal permeable stone below described trapping end board; Described trapping end board is fixedly connected with a rigid link, and rigid link protrudes upward described top cover by the rigid link through hole on top cover, and the part that described rigid link protrudes upward installs upper end board, and vertical rigid link coordinates with through hole motive seal; The surrounding of described outer rigid transparent sleeve is provided with axial grip component, and axial grip component accommodates clamping force to top cover and base to be impelled rigid transparent sleeve to be clamped by top cover and base and fixes; Described top cover upper surface is provided with fixed displacement meter and air admission hole, and the measuring junction of described fixed displacement meter is against on the board of described upper end, and described air admission hole is connected with pressue device by valve; Described top cover is also provided with vent port and pressure tap, pressure tap is connected with air pressure measuring apparatus by valve, described base is initial point is distributed with multiple circular row tank from inside to outside successively with axle center, circular row tank is separated into four parts by right-angled intersection drain groove, described base sidepiece is provided with hole pressure measured hole, base plate osculum and base plate hole for subsequent use, described hole is pressed described in measured hole, base plate osculum and base plate Kong Junyu for subsequent use and is loaded room conducting, and described base plate osculum is by the external aqueduct of valve and pore water volume measurement device; Described hole pressure measured hole is by valve external hole water-pressure survey device, and the circular row tank of described base and right-angled intersection drain groove and described base plate osculum connect.
The large-scale reshaped clay of vapour-pressure type provided by the invention makes and one-dimensional consolidation test coupled system is loaded by air pressure, pressurization is stable, evenly, can survey, controlled, avoid traditional counterweight load mode and be subject to the shortcomings such as external interference, loaded down with trivial details, poor controllability, and on-load pressure can reach 1.6 more than MPa, efficiently solve counterweight and load the shortcoming being difficult to apply high pressure; This instrument as vertical drainage passage, overcomes the shortcoming that traditional consolidation device drainage channel is single, consolidation rate is slow by embedded vertical metal permeable stone on rigid transparent sleeve; The pressure chamber rigid transparent sleeve of this instrument, has visuality, overcomes the shortcoming that traditional consolidometer is not visible.
accompanying drawing illustrates:
The large-scale reshaped clay of the vapour-pressure type that Fig. 1 provides for the first embodiment of the present invention makes and the structural representation of one-dimensional consolidation test coupled system
Fig. 2 is that the large-scale reshaped clay in Fig. 1 makes and one-dimensional consolidation tests the cross-sectional schematic of coupled system along base plate center line.
Fig. 3 for large-scale reshaped clay that the second embodiment of the present invention provides make and one-dimensional consolidation test coupled system along the cross-sectional schematic of base plate center line.
Fig. 4 is the structural representation of the base in Fig. 1.
Fig. 5 is the structural representation of the top cover in Fig. 1.
Fig. 6 is the structural representation at the back side of Fig. 5.
Fig. 7 is the structural representation of the trapping end board with rigid link in Fig. 2.
Fig. 8 is the structural representation of the trapping end board with rigid link in Fig. 3.
Fig. 9 is the assembled state perspective view of outer sleeve, middle sleeve and inner sleeve in Fig. 2.
Figure 10 is the structural representation of the horizontal permeable stone of toroidal in Fig. 2.
Figure 11 is the structural representation of the horizontal permeable stone of ring-shaped in Fig. 3.
Embodiment
Details are as follows by reference to the accompanying drawings for preferred example of the present invention:
The present invention is that the large-scale reshaped clay of a kind of vapour-pressure type makes and one-dimensional consolidation test coupled system, implements the sample that can make difformity, size in process of the test as requested.The present invention can make large scale cylinder sample, and can be used for the sample making reduced size further, as the rectangular parallelepiped sample in true triaxial test, and the cylinder sample etc. in Dynamic triaxial test.The present invention simultaneously can be used for making hollow cylinder sample, and can carry out cylinder torsional shear experiment through simple cutting.The embodiment of the present invention one is the making of large scale cylinder sample, and embodiment two is that hollow cylinder sample makes.
embodiment one
See Fig. 1, Fig. 2, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 9, shown in Figure 10, the large-scale reshaped clay of a kind of vapour-pressure type provided by the invention makes and one-dimensional consolidation test coupled system, comprise rigid transparent sleeve, base 1 and top cover 2, described rigid transparent ferrule configuration has the vertical vertical permeable stone 3 arranged, upper bush groove 4 grafting that the upper end of described rigid transparent sleeve and the lower surface of top cover 2 are offered also is sealed and matched, lower end to embed in the lower sleeve groove 5 on base 1 upper surface and is sealed and matched, upper bush groove 4 is toroidal cavity, rubber band is laid in groove, described lower sleeve groove 5 is toroidal cavity, rubber band is laid in groove, the space that top cover 2, rigid transparent sleeve and base 1 surround is divided into the air chamber on top and the loading room of bottom by trapping end board 6, horizontal permeable stone 7 is configured with below described trapping end board 6, in the present embodiment, rigid transparent sleeve is be in peripheral outer sleeve 8, and described trapping end board 6 and horizontal permeable stone 7 are all in the circle of mating with outer sleeve, described trapping end board 6 is fixedly connected with a rigid link 9, rigid link 9 protrudes upward described top cover 2 by the rigid link through hole 10 on top cover 2, the part that described rigid link 9 protrudes upward installs upper end board 11, and rigid link 9 coordinates with rigid link through hole 10 motive seal, the surrounding of described outer rigid transparent sleeve is provided with axial grip component 12, axial grip component 12 accommodates clamping force to top cover 2 and base 1 and impels rigid transparent sleeve clamped by top cover 2 and base 1 and fix, described axial grip component 12 comprises four hands and twists screw rod, and screw rod is threaded through the screw that top cover 2 is corresponding with on described base 1, described top cover 2 upper surface is provided with fixed displacement meter 13 and air admission hole 14, the measuring junction of described fixed displacement meter 13 is against on described upper end board 11, top cover fixed bar 15 is provided with above top cover 2, top cover fixed bar 15 is laterally fixed with horizontal bars, described fixed displacement meter 13 is arranged in horizontal bars, described air admission hole 14 is connected with pressue device by valve, described pressue device comprises air compressor machine 17 and voltage stabilizer 18, air compressor machine 17 is connected with voltage stabilizer 18 by pipeline, voltage stabilizer 18 is connected with valve by pipeline, valve installation is on the air admission hole 14 of top cover 2, valve is the stop valve with rotary knob, the making and truncation state of air-flow can be controlled, described top cover 2 is also provided with vent port 19 and pressure tap, pressure tap is connected with air pressure measuring apparatus 30 by valve, described base 1 is initial point is distributed with multiple circular row tank 21 from inside to outside successively with axle center, circular row tank 21 is separated into four parts by right-angled intersection drain groove 22, described base 1 sidepiece arranges porose pressure measured hole 23, base plate osculum 24 and base plate hole for subsequent use, described hole pressure measured hole 23, room conducting is loaded described in base plate osculum 24 and base plate Kong Junyu for subsequent use, base plate hole for subsequent use can be used as the vent port accelerating exhaust, also another air admission hole of two air admission hole can be used as, described base plate osculum 24 is by the external aqueduct of valve and pore water volume measurement device, described hole pressure measured hole 23 is by valve external hole water-pressure survey device, circular row tank 21 and the right-angled intersection drain groove 22 of described base 1 connect with described base plate osculum 24, described pore water volume measurement device is a wide range graduated cylinder, range is 1000 ML, described base plate osculum 24 connects aqueduct, the end of aqueduct puts into graduated cylinder, and the height and position of graduated cylinder is lower than the aperture of bottom drain holes.
The large-scale reshaped clay of the vapour-pressure type that embodiment one provides makes and one-dimensional consolidation test coupled system, can be used for the making of the large-scale consolidation sample making high 450 mm, diameter 250 mm, carries out one-dimensional consolidation test simultaneously, draws
e-
pcurve, obtains the compression index such as compression index, compressibility coefficient of clay.
embodiment two
Embodiment two is hollow cylinder sample making, and substantially identical with first embodiment, institute's difference is:
See Fig. 3, Fig. 8, Figure 11, the trapping end board 6 of embodiment one large-scale consolidation sample production experiment is circular load plate, this circular load plate is solid steel plate, and the trapping end board 6 that the present embodiment two uses is annular load plate, it is arranged annular load plate bolt hole, be connected with rigid link 9 screw thread, what directly contact with annular load plate is annular permeable stone, and annular permeable stone is then positioned over above hollow cylinder soil sample.Annular load plate thickness 13 mm, external diameter 100 mm, internal diameter 60 mm.
See Fig. 4, Fig. 8, Figure 11, the present embodiment two is with second difference of embodiment one, described rigid transparent sleeve comprises outer sleeve 8, middle sleeve 28 and inner sleeve 29, outer sleeve 8, middle sleeve 28 and inner sleeve 29 all circumferentially evenly arrange eight permeable stone grooves vertically distributed, and are placed with vertical permeable stone 3 in described permeable stone groove; Described trapping end board 6 and horizontal permeable stone 7 all in middle sleeve 28 and inner sleeve 29 surround that the Space Cross Section that formed mates circular, outer sleeve 8 plays the effect of stable experimental apparatus, and three sleeves are placed in base 1 sleeve groove corresponding with top cover 2 respectively; Height 470 mm of outer sleeve 8, internal diameter 250 mm, external diameter 270 mm, its vertical permeable stone 3 height 470 mm, thickness 3 mm, width is arc 15 degree of angles.Height 470 mm of middle sleeve 28, internal diameter 100 mm, external diameter 120 mm, its vertical permeable stone 3 thickness height 470 mm, thickness 3 mm, width is arc 15 degree of angles, the height 470mm of inner sleeve 29, internal diameter 40mm, external diameter 60mm, the thickness height 470mm of its vertical permeable stone 3, thickness 3mm, width is arc 15 degree of angles.
In practical operation, rigid transparent sleeve includes outer sleeve 8, middle sleeve 28 and inner sleeve 29, if make large solid cylindrical sample just remove middle sleeve 28 and inner sleeve 29, only surrounds sample die cavity with outer sleeve 8; If make little solid cylindrical sample with regard in reservation outer sleeve 8 and middle sleeve 28 and inner sleeve 29, wherein outer sleeve 8 is as supporting stabilizer effect, and middle sleeve 28 or inner sleeve 29 surround sample die cavity; If make hollow cylinder sample just all retain outer sleeve 8, middle sleeve 28 and inner sleeve 29, wherein middle sleeve 28 and inner sleeve 29 surround sample die cavity.
Claims (10)
1. the large-scale reshaped clay of vapour-pressure type makes and one-dimensional consolidation test coupled system, comprise rigid transparent sleeve, base and top cover, described rigid transparent ferrule configuration has the vertical vertical permeable stone arranged, and the upper bush groove grafting that the upper end of described rigid transparent sleeve and the lower surface of top cover are offered also is sealed and matched, is sealed and matched in lower sleeve groove that lower end embeds on base upper surface; The space that top cover, rigid transparent sleeve and base surround is divided into the air chamber on top and the loading room of bottom by described trapping end board, is configured with horizontal permeable stone below trapping end board; Described trapping end board is fixedly connected with a rigid link, and rigid link protrudes upward described top cover by the rigid link through hole on top cover, and the part that described rigid link protrudes upward installs upper end board, and vertical rigid link coordinates with through hole motive seal; The surrounding of described outer rigid transparent sleeve is provided with axial grip component, and axial grip component accommodates clamping force to top cover and base to be impelled rigid transparent sleeve to be clamped by top cover and base and fixes; Described top cover upper surface is provided with fixed displacement meter and air admission hole, and the measuring junction of described fixed displacement meter is against on the board of described upper end, and described air admission hole is connected with pressue device by valve; Described top cover is also provided with vent port and pressure tap, pressure tap is connected with air pressure measuring apparatus by valve, described base is initial point is distributed with multiple circular row tank from inside to outside successively with axle center, circular row tank is separated into four parts by right-angled intersection drain groove, described base sidepiece is provided with hole pressure measured hole, base plate osculum and base plate hole for subsequent use, described hole is pressed described in measured hole, base plate osculum and base plate Kong Junyu for subsequent use and is loaded room conducting, and described base plate osculum is by the external aqueduct of valve and pore water volume measurement device; Described hole pressure measured hole is by valve external hole water-pressure survey device, and the circular row tank of described base and right-angled intersection drain groove and described base plate osculum connect.
2. the large-scale reshaped clay of vapour-pressure type according to claim 1 makes and one-dimensional consolidation test coupled system, it is characterized in that: described rigid transparent sleeve is be in peripheral outer sleeve, and described trapping end board and horizontal permeable stone are all in the circle of mating with outer sleeve.
3. the large-scale reshaped clay of vapour-pressure type according to claim 1 makes and one-dimensional consolidation test coupled system, it is characterized in that: described rigid transparent sleeve comprises outer sleeve, middle sleeve and inner sleeve, outer sleeve, middle sleeve and inner sleeve all circumferentially evenly arrange eight permeable stone grooves vertically distributed, and are placed with vertical permeable stone in described permeable stone groove; Described trapping end board and horizontal permeable stone all in middle sleeve and inner sleeve surround that the Space Cross Section that formed mates circular.
4. according to claim 1 or 2 or 3, the large-scale reshaped clay of vapour-pressure type makes and one-dimensional consolidation test coupled system, it is characterized in that: described upper bush groove is toroidal cavity, lay rubber band in toroidal cavity, described lower sleeve groove is toroidal cavity, lays rubber band in toroidal cavity.
5. according to claim 1 or 2 or 3, the large-scale reshaped clay of vapour-pressure type makes and one-dimensional consolidation test coupled system, it is characterized in that: described pressue device comprises air compressor machine and voltage stabilizer, air compressor machine is connected with voltage stabilizer by pipeline, voltage stabilizer is connected with valve by pipeline, valve installation is on the air admission hole of top cover, valve is the stop valve with rotary knob, can control the making and truncation state of air-flow.
6. the large-scale reshaped clay of vapour-pressure type makes and one-dimensional consolidation test coupled system according to claim 4, it is characterized in that: described pressue device comprises air compressor machine and voltage stabilizer, air compressor machine is connected with voltage stabilizer by pipeline, voltage stabilizer is connected with valve by pipeline, valve installation is on the air admission hole of top cover, valve is the stop valve with rotary knob, can control the making and truncation state of air-flow.
7. according to claim 1 or 2 or 3, the large-scale reshaped clay of vapour-pressure type makes and one-dimensional consolidation test coupled system, and it is characterized in that: described axial grip component comprises four hands and twists screw rod, screw rod is threaded through the screw that top cover is corresponding with on described base.
8. the large-scale reshaped clay of vapour-pressure type makes and one-dimensional consolidation test coupled system according to claim 6, and it is characterized in that: described axial grip component comprises four hands and twists screw rod, screw rod is threaded through the screw that top cover is corresponding with on described base.
9. according to claim 1 or 2 or 3, the large-scale reshaped clay of vapour-pressure type makes and one-dimensional consolidation test coupled system, it is characterized in that: above described top cover, be provided with top cover fixed bar, top cover fixed bar is laterally fixed with horizontal bars, and described fixed displacement meter is arranged in horizontal bars.
10. the large-scale reshaped clay of a kind of vapour-pressure type according to claim 1 or 2 or 3 makes and one-dimensional consolidation test coupled system, it is characterized in that: described pore water volume measurement device is a wide range graduated cylinder, range is 1000 ML, described osculum connects aqueduct, the end of aqueduct puts into graduated cylinder, and the height and position of graduated cylinder is lower than the aperture of bottom drain holes.
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| CN105203361A (en) * | 2015-09-25 | 2015-12-30 | 同济大学 | Remolded soil consolidation method and consolidation device |
| CN105424907A (en) * | 2015-11-09 | 2016-03-23 | 立方通达实业（天津）有限公司 | Air pressure consolidation apparatus with air pressure cavity and water feeding/discharging pipe arranged on same side |
| CN105445106A (en) * | 2015-11-09 | 2016-03-30 | 立方通达实业（天津）有限公司 | Atmospheric pressure consolidation instrument for different soil sample sizes |
| CN106198144A (en) * | 2016-07-19 | 2016-12-07 | 温州大学 | Manipulated soil vacuum load associating sample preparation device |
| CN106525104A (en) * | 2016-10-10 | 2017-03-22 | 河海大学 | Solid sample upper pedestal of GDS torsion shear apparatus |
| CN106596229A (en) * | 2017-01-23 | 2017-04-26 | 浙江大学 | Device and method capable of preparing triaxial kaolin sample by use of externally connected gas pump |
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| CN107907392A (en) * | 2017-11-13 | 2018-04-13 | 武汉轻工大学 | The sample preparation device and method for making sample of vapour-pressure type manipulated soil |
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| CN105203361A (en) * | 2015-09-25 | 2015-12-30 | 同济大学 | Remolded soil consolidation method and consolidation device |
| CN105424907A (en) * | 2015-11-09 | 2016-03-23 | 立方通达实业（天津）有限公司 | Air pressure consolidation apparatus with air pressure cavity and water feeding/discharging pipe arranged on same side |
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| CN105424907B (en) * | 2015-11-09 | 2018-05-11 | 立方通达实业（天津）有限公司 | Atmospheric pressure cavity and the gas pressure consolidation instrument set into/discharge pipe line homonymy |
| CN106198144A (en) * | 2016-07-19 | 2016-12-07 | 温州大学 | Manipulated soil vacuum load associating sample preparation device |
| CN106525104A (en) * | 2016-10-10 | 2017-03-22 | 河海大学 | Solid sample upper pedestal of GDS torsion shear apparatus |
| CN106525104B (en) * | 2016-10-10 | 2019-07-12 | 河海大学 | A kind of solid sample upper bed-plate of GDS torsion shear apparatus |
| CN106596229A (en) * | 2017-01-23 | 2017-04-26 | 浙江大学 | Device and method capable of preparing triaxial kaolin sample by use of externally connected gas pump |
| CN107387481A (en) * | 2017-06-27 | 2017-11-24 | 北京航天动力研究所 | A kind of air pressure loading device for low temperature environment |
| CN107907392A (en) * | 2017-11-13 | 2018-04-13 | 武汉轻工大学 | The sample preparation device and method for making sample of vapour-pressure type manipulated soil |
| CN108106896B (en) * | 2017-12-20 | 2020-08-11 | 宁波诺丁汉大学 | Sand hollow cylinder sample preparation device easy to operate and sample preparation method thereof |
| CN108106896A (en) * | 2017-12-20 | 2018-06-01 | 宁波诺丁汉大学 | It is a kind of to operate easy sand hollow cylinder sample sample preparation device and its method for making sample |
| CN108362567A (en) * | 2018-01-08 | 2018-08-03 | 中山大学 | A kind of fully transparent balancing gate pit of multiple load sharing |
| CN110082217A (en) * | 2019-04-26 | 2019-08-02 | 温州大学 | Embedded earthwork triaxial apparatus and its experimental working technique |
| CN110487988A (en) * | 2019-08-16 | 2019-11-22 | 合肥工业大学 | A kind of air pressure-loading type one-dimensional consolidation infiltration joint test device |
| CN112362551A (en) * | 2020-10-29 | 2021-02-12 | 中国三峡建设管理有限公司 | Indoor convenient determination method and system for permeability of compact rock |
| CN112362551B (en) * | 2020-10-29 | 2024-03-08 | 中国三峡建设管理有限公司 | Indoor convenient determination method and system for permeability of tight rock |
| CN112665958A (en) * | 2021-01-18 | 2021-04-16 | 郑州大学 | Sample preparation device and sample preparation method for preparing sample for geotechnical true triaxial test |
| CN112924261A (en) * | 2021-01-19 | 2021-06-08 | 四川省建筑科学研究院有限公司 | Hydraulic multi-angle layered triaxial sample preparation device and sample preparation method thereof |
| CN112924261B (en) * | 2021-01-19 | 2023-09-19 | 四川省建筑科学研究院有限公司 | Hydraulic multi-angle layering triaxial sample preparation device and sample preparation method thereof |
| CN112985934A (en) * | 2021-01-28 | 2021-06-18 | 浙江工业大学 | Remolded soil sample preparation device and sample preparation method thereof |
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