CN113026827A - Model barrel device for indoor vacuum preloading model test - Google Patents
Model barrel device for indoor vacuum preloading model test Download PDFInfo
- Publication number
- CN113026827A CN113026827A CN201911347395.1A CN201911347395A CN113026827A CN 113026827 A CN113026827 A CN 113026827A CN 201911347395 A CN201911347395 A CN 201911347395A CN 113026827 A CN113026827 A CN 113026827A
- Authority
- CN
- China
- Prior art keywords
- model
- vacuum
- flanging
- hole
- pressure sensor
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A model barrel device for an indoor vacuum preloading model test comprises a barrel cover, a bottom plate and a model barrel body made of transparent materials, wherein the upper port and the lower port of the model barrel body are respectively provided with a first flanging and a second flanging, the first flanging is connected with the barrel cover, and the second flanging is hermetically connected with the bottom plate; the bottom plate and the model barrel body form a cavity for accommodating soil; a vacuum film is arranged at the upper end of the model barrel body, and the outer edge of the vacuum film is tightly pressed between the first flanging and the barrel cover; a vacuum gauge hole, a pore water pressure sensor hole and a vacuum pump connecting pipe hole are arranged on the upper wall surface of the model barrel body in a penetrating manner, a first rubber plug and a second rubber plug are respectively arranged in the vacuum gauge hole and the pore water pressure sensor hole, and a vacuum measuring head and a pore water pressure sensor are respectively inserted from the outside; a drainage plate, a vacuum measuring head and a pore water pressure sensor are arranged in the soil body, and the drainage plate is connected with a vacuum pumping system through a steel wire hose. The invention adopts a mode of opening the side surface and vacuumizing, thereby improving the precision of test data.
Description
Technical Field
The invention relates to the technical field of vacuum preloading in soft foundation treatment, in particular to a model barrel device for an indoor vacuum preloading model test.
Background
With the national economic development, in some coastal economically developed areas, the land use amount is continuously increased, the contradiction between land supply and demand is prominent, and the artificial dredger fill of tidal marsh sludge as land areas is an effective method for relieving the shortage of land resources. However, the foundation formed by the dredger fill has the characteristics of high water content, high compressibility, certain fluidity and elasticity, almost no engineering unfavorable characteristics such as bearing capacity and the like, and the requirement of subsequent engineering construction can be met after reinforcement measures are taken. The vacuum preloading method is an effective method for treating soft soil foundations, and is characterized in that a vertical drainage plate is arranged in soft clay in a beating mode, a sand layer is paved on the soft clay, a geomembrane is covered on the soft clay for sealing, and a vacuumizing system is used for discharging water in soil bodies to enable the soil bodies to be solidified.
When the vacuum preloading model test is carried out indoors, the drainage plate is connected with an external vacuumizing system through the hand-shaped joint and the steel wire hose, negative pressure generated by the vacuum pump discharges water in a soil body in the vacuumizing process, the soil body is solidified, and the discharged water is collected by the water-vapor separation bottle. When the sample soil is vacuumized, the air tightness of the model barrel can directly influence the subsequent test and the accuracy of data acquisition. The used model bucket of indoor vacuum preloading model test at tradition generally is plastics model bucket or iron drum, is unfavorable for experimental observation, and in sensor, vacuum gauge head, vacuum tube adopted the mode of top rupture of membranes let in the model bucket, the mode concrete implementation of this kind of top rupture of membranes got up complicacy, and the misoperation can lead to the model bucket the gas leakage phenomenon to appear, causes very big error to the test result.
Disclosure of Invention
In order to overcome the problems, the invention provides a model barrel device suitable for an indoor vacuum preloading model test.
The technical scheme adopted by the invention is as follows: a model barrel device for an indoor vacuum preloading model test comprises a circular barrel cover 10, a circular base plate 11 and a cylindrical model barrel body 1 made of transparent materials, wherein an outward first flanging 3a is arranged at the upper end opening of the model barrel body 1, and the first flanging 3a is fixedly connected with the barrel cover 10 through a first fastening bolt 13 a; the lower port of the model barrel body 1 is provided with an outward second flanging 3b, and the second flanging 3b is fixedly connected with the bottom plate 11 through a second fastening bolt 13 b; the model barrel body 1 and the bottom plate 11 enclose a cavity for containing soil, and geotextile covers the soil; a first sealing washer 5a is arranged between the first flanging 3a and the barrel cover 10, and a second sealing washer 5b is arranged between the second flanging 3b and the bottom plate 11; a first fixed triangular support 2a is arranged between the first flanging 3a and the model barrel body 1, and second fixed triangular supports 2b are arranged between the second flanging 3b and the model barrel body 1;
the upper port of the model barrel body 1 is covered with a vacuum film, and the outer edge of the vacuum film is tightly pressed between the first flanging 3a and the barrel cover 10; the upper wall surface of the model barrel body 1 is provided with a vacuum gauge hole 7, a pore water pressure sensor hole 8 and a vacuum pump connecting pipe hole 6 in a penetrating way;
the outer end of the vacuum pump connecting pipe hole 6 is provided with a first reinforcing ring 9a, an inlet and outlet water pipe 14 is arranged in the vacuum pump connecting pipe hole 6, one end of the inner side of the inlet and outlet water pipe 14 is connected with a steel wire hose 16, and one end of the outer side of the inlet and outlet water pipe 14 is connected with a vacuum pumping system; the upper surface of the bottom plate 11 is provided with a drainage plate bracket 20, and a drainage plate 19 is vertically fixed on the drainage plate bracket 20 and is buried in the soil body; the top end of the drainage plate 19 is provided with a hand-shaped joint 18, and the hand-shaped joint 18 is connected with a steel wire hose 16; the drainage plate 19 is connected with a vacuum pumping system through a hand joint 18 and a steel wire hose 16;
the outer end of the vacuum gauge hole 7 is provided with a second reinforcing ring 9b, a first rubber plug 15a is tightly arranged in the vacuum gauge hole 7, a first fine hole penetrates through the first rubber plug 15a, the first fine hole is inserted into a vacuum measuring head from the outside, and the vacuum measuring head is embedded in a soil body;
a third reinforcing ring 9c is arranged at the outer end of the pore water pressure sensor hole 8, a second rubber plug 15b is tightly arranged in the pore water pressure sensor hole 8, a second fine hole penetrates through the second rubber plug 15b, the second fine hole is inserted into the pore water pressure sensor from the outside, and the pore water pressure sensor is embedded in a soil body;
a graduated scale 12 for recording the displacement change of the soil body is arranged on the outer wall of the model barrel body 1; the upper surface of the barrel cover 10 is provided with a displacement sensor fixing support 21, and the displacement sensor fixing support is provided with an LVDT displacement sensor for fixedly measuring the displacement change of the soil body.
Further, the number of the pore water pressure sensor holes 8 is 5, and the number of the vacuum gauge holes 7 is 2; pore water pressure sensor holes 8 and vacuum gauge holes 7 are arranged in an array on the upper wall surface of the model barrel body 1.
Further, a first clamp 17 is arranged at the joint of the hand-shaped joint 18 and the steel hose 16, and the first clamp 17 is used for clamping.
The invention has the beneficial effects that:
1. the model barrel is made of organic glass and is integrally injection-molded, so that the test and observation are facilitated.
2. This model bucket adopts the form of side trompil evacuation, can solve the gas leakage problem that causes by the membrane is gone out at the pipeline top among the traditional indoor vacuum preloading test procedure well, and the gas tightness is better, has improved experimental accuracy.
3. The testing device is simple in structure and relatively simple to operate, and the model barrel can be repeatedly used, so that the working efficiency of vacuum preloading is effectively improved.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a left side view of the present invention.
Fig. 3 is a schematic view of the internal structure of the present invention.
Fig. 4 is a top view of the present invention.
Fig. 5 is a schematic structural view of the tub cover of the present invention.
Fig. 6 is a schematic structural view of the base plate of the present invention.
Fig. 7 is a schematic diagram of the pore structure of the pore water pressure sensor of the present invention.
Fig. 8 is a schematic view showing the structure of the hole of the vacuum pump connecting tube according to the present invention.
Description of reference numerals: 1. a model barrel body; 2a, a first fixed triangular support; 2b, a second fixed triangular support; 3a, a first flanging; 3b, second flanging; 4a, a first bolt hole; 4b, a second bolt hole; 5a, a first sealing gasket; 5b, a second sealing gasket; 6. the vacuum pump is connected with the pipe hole; 7. vacuum gauge holes; 8. pore water pressure sensor pores; 9a, a first reinforcing ring; 9b, a second reinforcing ring; 9c, a third reinforcing ring; 10. a barrel cover; 11. a base plate; 12. a graduated scale; 13a, a first fastening bolt; 13b, a second fastening bolt 14, an inlet and outlet water pipe; 15a, a first rubber plug; 15b, a second rubber plug; 16. a steel wire hose; 17. a first clamp; 18. a hand joint; 19. a drain plate; 20. a drain plate support; 21. and a displacement sensor fixing support.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto:
referring to the attached drawings, the model barrel device for the indoor vacuum preloading model test comprises a circular barrel cover 10, a circular plate-shaped bottom plate 11 made of a thick steel plate and a cylindrical model barrel body 1 made of organic glass, wherein the thickness of the model barrel body 1 is 15mm, the width of the barrel cover 10 is 65mm, an outward first flanging 3a is arranged at the upper end opening of the model barrel body 1, and 24 first bolt holes 4a with the diameter of 10mm are formed in the positions, corresponding to the barrel cover 10, of the first flanging 3 a; the first bolt holes 4a are distributed at equal intervals along the circumferential direction of the first flanging 3a, and the first flanging 3a is fixedly connected with the barrel cover 10 through first fastening bolts 13 a;
the lower port of the model barrel body 1 is provided with an outward second flanging 3b, 24 second bolt holes 4b with the diameter of 10mm are arranged at the positions of the second flanging 3b corresponding to the bottom plate 11, the second bolt holes 4b are distributed at equal intervals along the circumferential direction of the second flanging 3b, and the second flanging 3b is fixedly connected with the bottom plate 11 through second fastening bolts 13 b; the widths of the first turnup 3a and the second turnup 3b are both 50mm, the thickness of the first turnup 3a is 20mm, and the thickness of the second turnup 3b is 30 mm;
the model barrel body 1 and the bottom plate 11 enclose a cavity for containing soil, and geotextile covers the soil; a first sealing washer 5a is arranged between the first flanging 3a and the barrel cover 10, and a second sealing washer 5b is arranged between the second flanging 3b and the bottom plate 11; a first fixed triangular support 2a is arranged between the first flanging 3a and the model barrel body 1, and a second fixed triangular support 2b is arranged between the second flanging 3b and the model barrel body 1;
the upper port of the model barrel body 1 is covered with a vacuum film, and the outer edge of the vacuum film is tightly pressed between the first flanging 3 and the barrel cover 10; the upper wall surface of the model barrel body 1 is provided with a vacuum gauge hole 7, a pore water pressure sensor hole 8 and a vacuum pump connecting pipe hole 6 in a penetrating way; the number of the pore water pressure sensor holes 8 is 5, and the number of the vacuum gauge holes 7 is 2; pore water pressure sensor holes 8 and vacuum gauge holes 7 are arranged on the upper wall surface of the model barrel body 1 in an array manner;
the outer end of the vacuum pump connecting pipe hole 6 is provided with a first reinforcing ring 9a, an inlet and outlet water pipe 14 is arranged in the vacuum pump connecting pipe hole 6, one end of the inner side of the inlet and outlet water pipe 14 is connected with a steel wire hose 16, and one end of the outer side of the inlet and outlet water pipe 14 is connected with a vacuum pumping system; the upper surface of the bottom plate 11 is provided with a drainage plate bracket 20, and a drainage plate 19 is vertically fixed on the drainage plate bracket 20 and is buried in the soil body; the top end of the drainage plate 19 is provided with a hand-shaped joint 18, and the hand-shaped joint 18 is connected with a steel wire hose 16; a first clamp 17 is arranged at the joint of the hand joint 18 and the steel wire hose 16 and is clamped by the first clamp 17; the drainage plate 19 is connected with a vacuum pumping system through a steel wire hose 16;
the outer end of the vacuum gauge hole 7 is provided with a second reinforcing ring 9b, a first rubber plug 15a is tightly arranged in the vacuum gauge hole 7, a first fine hole penetrates through the first rubber plug 15a, the first fine hole is inserted into a vacuum measuring head from the outside, and the vacuum measuring head is embedded in a soil body;
a third reinforcing ring 9c is arranged at the outer end of the pore water pressure sensor hole 8, a second rubber plug 15b is tightly arranged in the pore water pressure sensor hole 8, a second fine hole penetrates through the second rubber plug 15b, the second fine hole is inserted into the pore water pressure sensor from the outside, and the pore water pressure sensor is embedded in a soil body;
a graduated scale 12 for recording the displacement change of the soil body is arranged on the outer wall of the model barrel body 1; the upper surface of the barrel cover 10 is provided with a displacement sensor fixing support 21, the displacement sensor fixing support 21 comprises a horizontally arranged plate-shaped fixing plate and two tubular supporting cylinders vertically arranged in the middle of the plate-shaped fixing plate, screw holes are formed in the positions, corresponding to the first bolt holes 4a in the barrel cover 10, of the two ends of the displacement sensor fixing support 21 and fixed through first bolts 13a, and the displacement sensor fixing support is provided with an LVDT displacement sensor for fixing and measuring the displacement change of the soil body.
The working steps of this embodiment are:
checking whether a test device, a model barrel device and each part are normal or not, and testing whether each sensor works normally, whether a vacuum film is damaged or not and the like;
secondly, connecting the top end of a drainage plate 19 with a hand-type joint 18, arranging a drainage plate support 20 on a bottom plate, respectively bonding the interface of the drainage plate 19 and the hand-type joint 18 and the bottom of the drainage plate 19 by using AB glue, vertically binding the drainage plate 19 into the drainage plate support 20, respectively perforating a first rubber plug 15a and a second rubber plug 15b, entering a vacuum measuring head and a connecting line thereof, a pore water pressure sensor and a data line thereof into a model barrel body through corresponding rubber plugs, respectively fixing the vacuum measuring head and the pore water pressure sensor on the drainage plate support 20, tightly plugging holes on the side wall by using rubber plugs, and sealing by setting glass cement;
thirdly, inlet and outlet water pipes 14 are arranged in the vacuum pump connecting pipe holes 6, the inner ends of the inlet and outlet water pipes 14 are connected with a hand-shaped joint 18 through a steel wire hose 16, the outer ends of the inlet and outlet water pipes 14 are connected with a vacuum pumping system through the steel wire hose 16, and joints of all the pipelines are clamped and fixed by clamps; adding a test soil sample, namely a soil body, into the model barrel body 1, attaching geotextile to the top of the soil body, laying a vacuum membrane with a large enough area above the geotextile, placing a first sealing washer 5a on the outer edge of the vacuum membrane, placing the barrel cover 10 on the first sealing washer 5a, arranging a displacement sensor support 21 on the barrel cover 10, aligning with a first bolt hole 4a, fixing the displacement sensor support 21 by using a first bolt 13a, and then fixing the rest first bolt 13 a;
step four, arranging other test instruments; and (3) opening a vacuum pumping system, starting data acquisition software on a computer, discharging water in the soil body by negative pressure generated by the vacuum system through a drainage plate 19, acquiring the pore water pressure and the soil body settlement amount in the soil body during a vacuum preloading test through data acquisition, and recording the change of the vacuum degree of the soil body.
The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but rather by the equivalents thereof as may occur to those skilled in the art upon consideration of the present inventive concept.
Claims (3)
1. The utility model provides a model barreled is put for experimental model of indoor vacuum preloading model which characterized in that: the barrel cover comprises a circular barrel cover (10), a circular-plate-shaped bottom plate (11) and a cylindrical model barrel body (1) made of transparent materials, wherein an outward first flanging (3a) is arranged at the upper port of the model barrel body (1), and the first flanging (3a) is fixedly connected with the barrel cover (10) through a first fastening bolt (13 a); the lower port of the model barrel body (1) is provided with an outward second flanging (3b), and the second flanging (3b) is fixedly connected with the bottom plate (11) through a second fastening bolt (13 b); the model barrel body (1) and the bottom plate (11) enclose a cavity for containing soil, and geotechnical cloth covers above the soil; a first sealing washer (5a) is arranged between the first flanging (3a) and the barrel cover (10), and a second sealing washer (5b) is arranged between the second flanging (3b) and the bottom plate (11); a first fixed triangular support (2a) is arranged between the first flanging (3a) and the model barrel body (1), and second fixed triangular supports (2b) are arranged between the second flanging (3b) and the model barrel body (1);
a vacuum film covers the upper port of the model barrel body (1), and the outer edge of the vacuum film is tightly pressed between the first flanging (3a) and the barrel cover (10); a vacuum gauge hole (7), a pore water pressure sensor hole (8) and a vacuum pump connecting pipe hole (6) are arranged on the upper wall surface of the model barrel body (1) in a penetrating manner;
a first reinforcing ring (9a) is arranged at the outer end of the vacuum pump connecting pipe hole (6), an inlet and outlet water pipe (14) is arranged in the vacuum pump connecting pipe hole (6), one end of the inner side of the inlet and outlet water pipe (14) is connected with a steel wire hose (16), and one end of the outer side of the inlet and outlet water pipe (14) is connected with a vacuum pumping system; a drainage plate bracket (20) is arranged on the upper surface of the bottom plate (11), and a drainage plate (19) is vertically fixed on the drainage plate bracket (20) and is buried in a soil body; the top end of the drainage plate (19) is provided with a hand-shaped joint (18), and the hand-shaped joint (18) is connected with the steel wire hose (16); the drainage plate (19) is connected with a vacuum pumping system through a hand-shaped joint (18) and a steel wire hose (16);
a second reinforcing ring (9b) is arranged at the outer end of the vacuum gauge hole (7), a first rubber plug (15a) is tightly arranged in the vacuum gauge hole (7), a first fine hole penetrates through the first rubber plug (15a), the first fine hole is inserted into a vacuum measuring head from the outside, and the vacuum measuring head is embedded in a soil body;
a third reinforcing ring (9c) is arranged at the outer end of the pore water pressure sensor hole (8), a second rubber plug (15b) is tightly arranged in the pore water pressure sensor hole (8), a second fine hole penetrates through the second rubber plug (15b), the second fine hole is inserted into the pore water pressure sensor from the outside, and the pore water pressure sensor is embedded in a soil body;
a graduated scale (12) for recording the displacement change of the soil body is arranged on the outer wall of the model barrel body (1); the upper surface of the barrel cover (10) is provided with a displacement sensor fixing support (21), and the displacement sensor fixing support (21) is provided with an LVDT displacement sensor for fixedly measuring the displacement change of the soil body.
2. The model barrel device for the indoor vacuum preloading model test as claimed in claim 1, wherein: the number of the pore water pressure sensor holes (8) is 5, and the number of the vacuum gauge holes (7) is 2; pore water pressure sensor holes (8) and vacuum gauge holes (7) are arranged on the upper wall surface of the model barrel body (1) in an array manner.
3. The model barrel device for the indoor vacuum preloading model test as claimed in claim 1, wherein: the joint of the hand-shaped joint (18) and the steel wire hose (16) is provided with a first clamp (17) and is clamped through the first clamp (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911347395.1A CN113026827A (en) | 2019-12-24 | 2019-12-24 | Model barrel device for indoor vacuum preloading model test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911347395.1A CN113026827A (en) | 2019-12-24 | 2019-12-24 | Model barrel device for indoor vacuum preloading model test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113026827A true CN113026827A (en) | 2021-06-25 |
Family
ID=76451694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911347395.1A Pending CN113026827A (en) | 2019-12-24 | 2019-12-24 | Model barrel device for indoor vacuum preloading model test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113026827A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113640128A (en) * | 2021-06-28 | 2021-11-12 | 浙江工业大学 | Indoor variable-depth vacuum preloading model barrel device and test method thereof |
| CN114112700A (en) * | 2021-11-12 | 2022-03-01 | 广州环投南沙环保能源有限公司 | Method for performing vacuum preloading experiment by using model barrel |
| CN115305902A (en) * | 2022-08-25 | 2022-11-08 | 中国电建集团华东勘测设计研究院有限公司 | Drawer type multi-working-condition vacuum prepressing model box |
-
2019
- 2019-12-24 CN CN201911347395.1A patent/CN113026827A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113640128A (en) * | 2021-06-28 | 2021-11-12 | 浙江工业大学 | Indoor variable-depth vacuum preloading model barrel device and test method thereof |
| CN114112700A (en) * | 2021-11-12 | 2022-03-01 | 广州环投南沙环保能源有限公司 | Method for performing vacuum preloading experiment by using model barrel |
| CN115305902A (en) * | 2022-08-25 | 2022-11-08 | 中国电建集团华东勘测设计研究院有限公司 | Drawer type multi-working-condition vacuum prepressing model box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113026827A (en) | Model barrel device for indoor vacuum preloading model test | |
| CN110208115B (en) | Seepage module of embeddable interface ring shear apparatus considering soil body seepage corrosion | |
| CN102707034B (en) | Indoor model testing device and testing method employing air-pressure splitting vacuum preloading method | |
| CN104790442B (en) | The full-scale model test test device of vacuum method soft soil foundation and its method for experimental test | |
| CN108008116B (en) | Vacuum preloading and electroosmosis combined test device | |
| CN101413261B (en) | Double-layer low-position vacuum preload consolidation device and soft soil foundation reinforcing method | |
| CN211773953U (en) | Model barrel device for indoor vacuum preloading model test | |
| CN105258669A (en) | Simulation test device of sedimentation post-treatment of rain pipe in sea silt and method | |
| CN104596853A (en) | Multifunctional vacuum preloading consolidation experiment apparatus and method for performing closed type vacuum preloading experiment | |
| CN201534973U (en) | Pre-embedded type vacuum consolidating yard | |
| CN111270859A (en) | Air exhaust system for assembled concrete grouting sleeve and construction method of air exhaust system | |
| CN110514572A (en) | A kind of concrete for construction engineering Anti-leakage instrument | |
| CN204536146U (en) | The total suction field measurement apparatus of a kind of soil based on filter paper method | |
| CN207498991U (en) | A kind of exhaust valve pit | |
| CN216586691U (en) | Bored concrete pile slip casting acoustic survey device | |
| CN110206016A (en) | A kind of soft foundation treatment process using vacuum preloading | |
| CN113640128A (en) | Indoor variable-depth vacuum preloading model barrel device and test method thereof | |
| CN102605795B (en) | Waterproof sleeve for repairing concrete surface of water table fluctuation region and application method of waterproof sleeve | |
| CN103175664A (en) | Model test device and test method for sealing performance of joints of check valves | |
| CN205102823U (en) | Aftertreatment analogue test device is subsided to downspout in sea silt soil | |
| CN204021618U (en) | A kind of subterranean reservoir structure | |
| CN204389351U (en) | A kind of geosynthetics draining material filter membrane horizontal penetration clogging reduction proving installation | |
| CN211553427U (en) | Collect soil and drench integration infiltration pond device of dissolving water | |
| CN114112700A (en) | Method for performing vacuum preloading experiment by using model barrel | |
| CN112431184A (en) | Device and method for embedding and installing soil pressure cell through drilling and grouting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |