CN110487586B - Soft soil sampling device for indoor model test - Google Patents
Soft soil sampling device for indoor model test Download PDFInfo
- Publication number
- CN110487586B CN110487586B CN201910762126.5A CN201910762126A CN110487586B CN 110487586 B CN110487586 B CN 110487586B CN 201910762126 A CN201910762126 A CN 201910762126A CN 110487586 B CN110487586 B CN 110487586B
- Authority
- CN
- China
- Prior art keywords
- thin
- wall
- sampling
- inner tube
- sample
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
Landscapes
- 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)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention provides a soft soil sampling device for an indoor model test, which consists of a thin-wall sampling outer pipe and a thin-wall sampling inner pipe, wherein the thin-wall sampling outer pipe is provided with a sliding track, a first sliding block and a second sliding block are arranged in the sliding track, the first sliding block and the second sliding block are respectively welded with corresponding screw rods, and the two thin-wall sampling inner pipes can rotate in the thin-wall sampling outer pipe through welding to a handle or a driving motor of a connecting steel plate; when the soft soil sampling device penetrates, the thin-wall sampling inner tube is contracted in the thin-wall sampling outer tube, so that the contact area with the soft soil is reduced, and the disturbance to the soft soil is reduced. After the soft soil sampling device is penetrated, the thin-wall sampling inner tube can be rotated by a handle or a driving motor to cut the soft soil; and finally, taking out the soft soil sampling device by lifting the handle. After the soil sample is taken out, the nut can be disassembled, the screw rod, the first sliding block and the second sliding block are taken out, the thin-wall sampling outer tube and the thin-wall sampling inner tube are disassembled, and disturbance to the soil sample is reduced.
Description
Technical Field
The invention belongs to the technical field of geotechnical engineering, and particularly relates to a soft soil sampling device for an indoor model test.
Background
With the rapid development of geotechnical engineering construction in China, the amount of the engineering construction is larger and more difficult nowadays, great challenges are provided for the geotechnical engineering industry, and many problems to be solved exist. Many times, the existing standard provisions can not effectively design and guide geotechnical engineering, and an indoor model test needs to be developed to research specific engineering and specific working conditions.
In the southeast coastal areas, particularly in the coastal areas of Zhejiang, more sludge, mucky soil, clay and silty clay are distributed on the shallow layer, and the soft soil has the characteristics of strong structure, low strength, high sensitivity, high compressibility and the like.
The engineering characteristics of soft soil are important for the stability of building structures, and indoor unit tests and indoor model tests are commonly adopted for the research on the engineering characteristics of soft soil. How to obtain the strength index of the model test soil is a problem which troubles geotechnical engineers. Currently, for obtaining the strength index of the indoor model test soil, an indoor in-situ test method is often adopted, for example: evaluating the soil body strength by methods such as a micro cross plate shearing test, a micro penetrometer test, a T-shaped penetrometer test, a spherical penetrometer test and the like; or theoretical analysis and laboratory unit test. The indoor unit test method is used for testing the remolded soft soil, and the strength index of the real soil after the indoor model test cannot be reflected.
Therefore, the method is a more accurate method by sampling the soft soil after the indoor model test and reflecting the strength index of the in-situ soft soil through the indoor unit test, and has stronger feasibility. Therefore, the development of the simple soft soil sampling device for the indoor model test has important scientific research significance and engineering value.
Disclosure of Invention
The invention aims to provide a soft soil sampling device for an indoor model test, which is simple and convenient to operate, strong in practicability and small in soft soil disturbance.
For this reason, the above object of the present invention is achieved by the following technical solutions:
the soft soil sampling device for the indoor model test comprises a thin-wall sampling outer pipe and a thin-wall sampling inner pipe, wherein the inner diameter of the thin-wall sampling outer pipe is the same as the outer diameter of the thin-wall sampling inner pipe, blade feet are arranged at the lower parts of the thin-wall sampling outer pipe and the thin-wall sampling inner pipe, both ends of the thin-wall sampling outer pipe and the thin-wall sampling inner pipe are in a penetrating mode, the side wall of the thin-wall sampling outer pipe is an arc surface exceeding 180 degrees, the thin-wall sampling inner pipe comprises a first thin-wall sampling inner pipe and a second thin-wall sampling inner pipe, the first thin-wall sampling inner pipe and the second thin-wall sampling inner pipe can rotate along the circumferential direction of the inner side wall of the thin-wall sampling outer pipe and enable the side wall of the thin-wall sampling outer pipe and the side wall of the thin-wall sampling inner pipe to form a closed cylinder shape, and the side wall of the thin-wall sampling inner pipe formed by splicing the first thin-wall sampling inner pipe and the second thin-wall sampling inner pipe is an arc surface of 180 degrees, when the side wall of the thin-wall sampling outer pipe and the side wall of the thin-wall sampling inner pipe form a closed cylinder shape, two opposite overlapped redundant parts are formed between the side wall of the thin-wall sampling outer pipe and the side wall of the thin-wall sampling inner pipe; the end parts of the first thin-wall sampling inner tube and the second thin-wall sampling inner tube which are spliced when the side wall of the thin-wall sampling outer tube and the side wall of the thin-wall sampling inner tube form a closed cylinder shape respectively have a first section and a second section, and the first section of the first thin-wall sampling inner tube and the second section of the second thin-wall sampling inner tube form a sample cutting to soft soil when the first thin-wall sampling inner tube and the second thin-wall sampling inner tube rotate along the circumferential direction of the inner side wall of the thin-wall sampling outer tube.
The invention can adopt or combine the following technical scheme while adopting the technical scheme:
as a preferred technical scheme of the invention, when the side wall of the thin-wall sampling outer tube and the side wall of the thin-wall sampling inner tube form a closed cylinder shape, a first section of a first thin-wall sampling inner tube and a second section of a second thin-wall sampling inner tube are overlapped front and back.
As a preferred technical scheme of the present invention, the sidewall of the thin-wall sampling outer tube of the soft soil sampling device is a 225-degree arc surface, the sidewalls of the first and second thin-wall sampling inner tubes are both 112.5-degree arc surfaces, and the sidewall of the thin-wall sampling inner tube spliced after the first and second cut surfaces are overlapped front and back is a 180-degree arc surface.
As a preferred technical solution of the present invention, the upper portion of the thin-walled sampling outer tube is provided with a sliding track circumferentially arranged along a circumferential wall of the thin-walled sampling outer tube, the sliding track is internally provided with a first slider and a second slider, both the first slider and the second slider can slide in the sliding track, the first slider and the second slider are respectively provided with a screw rod penetrating through the first thin-walled sampling inner tube and the second thin-walled sampling inner tube, the other end of the screw rod respectively penetrates through an upwardly extending connecting steel plate, and the end of the screw rod penetrating through the connecting steel plate is provided with a fixing nut.
As a preferred technical scheme of the present invention, a handle is disposed at an upper end of the connecting steel plate, a hand-held portion of the handle faces an outer circumference of the thin-wall sampling outer tube, and the handle is configured to drive the first thin-wall sampling inner tube or the second thin-wall sampling inner tube to form a first section of the first thin-wall sampling inner tube and a second section of the second thin-wall sampling inner tube to cut the soft soil sample and lift the soft soil sampling device upward.
As a preferred technical scheme of the invention, a driving motor is arranged at the upper end of the connecting steel plate, and the driving motor is used for driving the first thin-wall sampling inner tube or the second thin-wall sampling inner tube to form a first section of the first thin-wall sampling inner tube and a second section of the second thin-wall sampling inner tube to cut the soft soil.
The invention provides a soft soil sampling device for an indoor model test, which has the following beneficial effects:
the soft soil sampling device consists of a thin-wall sampling outer pipe and a thin-wall sampling inner pipe, wherein the thin-wall sampling outer pipe is provided with a sliding track, a first sliding block and a second sliding block are arranged in the sliding track, the first sliding block and the second sliding block are respectively welded with corresponding screw rods, the screw rods penetrate through the thin-wall sampling inner pipe and a connecting steel plate and are fixed by fixing nuts, and the two thin-wall sampling inner pipes can rotate in the thin-wall sampling outer pipe through welding to a handle or a driving motor of the connecting steel plate; when the soft soil sampling device penetrates, the thin-wall sampling inner tube is contracted in the thin-wall sampling outer tube, so that the contact area with the soft soil is reduced, and the disturbance to the soft soil is reduced. After the soft soil sampling device is penetrated, the thin-wall sampling inner tube can be rotated by a handle or a driving motor to cut the soft soil; and finally, taking out the soft soil sampling device by lifting the handle. After the soil sample is taken out, the nut can be disassembled, the screw rod, the first sliding block and the second sliding block are taken out, the thin-wall sampling outer tube and the thin-wall sampling inner tube are disassembled, and disturbance to the soil sample is reduced. The soft soil sampling device is simple and convenient to operate, small in disturbance to soft soil, and guaranteed in sampling quality, and can provide accurate undisturbed soil sample parameters for an indoor model test.
Drawings
Fig. 1 is a perspective view of a soft soil sampling device for an indoor model test provided by the invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3a is a cross-sectional view at the handle in the open state of the soft soil sampling device.
Fig. 3b is a cross-sectional view at the handle in the closed state of the soft soil sampling device.
Fig. 4a is a cross-sectional view of the connection steel plate in the open state of the soft soil sampling device.
Fig. 4b is a cross-sectional view of the connection steel plate in the closed state of the soft soil sampling device.
Fig. 5a cross-sectional view of the lower part of the soft soil sampling device in the open state of the soft soil sampling device.
Fig. 5b is a cross-sectional view of the lower part of the soft soil sampling device in the closed state of the soft soil sampling device.
Detailed Description
The present invention is described in further detail below with reference to specific examples.
A soft soil sampling device for an indoor model test comprises a thin-wall sampling outer tube 1 and a thin-wall sampling inner tube 2, wherein the inner diameter of the thin-wall sampling outer tube 1 is the same as the outer diameter of the thin-wall sampling inner tube 2, blade feet 3 are arranged at the lower parts of the thin-wall sampling outer tube 1 and the thin-wall sampling inner tube 2, both ends of the thin-wall sampling outer tube 1 and the thin-wall sampling inner tube 2 are in a penetrating mode, the side wall of the thin-wall sampling outer tube 1 is an arc surface which is more than 180 degrees, the thin-wall sampling inner tube 2 comprises a first thin-wall sampling inner tube 21 and a second thin-wall sampling inner tube 22, the first thin-wall sampling inner tube 21 and the second thin-wall sampling inner tube 22 can rotate along the circumferential direction of the inner side wall of the thin-wall sampling outer tube 1 to enable the side wall of the thin-wall sampling outer tube 1 and the side wall of the thin-wall sampling inner tube 2 to form a closed cylinder shape, the side wall of the thin-wall sampling inner tube 2 formed by splicing the first thin-wall sampling inner tube 21 and the second thin-wall sampling inner tube 22 is an arc surface which is 180 degrees, when the side wall of the thin-wall sampling outer tube 1 and the side wall of the thin-wall sampling inner tube 2 form a closed cylinder shape, two opposite overlapped redundant parts are formed between the side wall of the thin-wall sampling outer tube 1 and the side wall of the thin-wall sampling inner tube 2, and refer to fig. 5 b; the first thin-walled sampling inner tube 21 and the second thin-walled sampling inner tube 22 respectively have a first section 211 and a second section 221 at the end portions spliced when the side wall of the thin-walled sampling outer tube 1 and the side wall of the thin-walled sampling inner tube 2 form a closed cylinder shape, and the first section 211 of the first thin-walled sampling inner tube 21 and the second section 221 of the second thin-walled sampling inner tube 22 form a soft soil sample cutting under the rotation of the first thin-walled sampling inner tube 21 and the second thin-walled sampling inner tube 22 along the circumferential direction of the inner side wall of the thin-walled sampling outer tube 1.
When the side wall of the thin-walled sampling outer tube 1 and the side wall of the thin-walled sampling inner tube 2 form a closed cylinder, the first cut surface 211 of the first thin-walled sampling inner tube 21 and the second cut surface 221 of the second thin-walled sampling inner tube 22 are overlapped in front and back. Of course, in other embodiments, the first cut surface 211 of the first thin-walled sampling inner tube 21 and the second cut surface 221 of the second thin-walled sampling inner tube 22 can be in contact with each other without being overlapped, and these variations are within the scope of the present invention.
The side wall of the thin-wall sampling outer pipe 1 of the soft soil sampling device is an arc surface of 225 degrees, the side walls of the first and second thin-wall sampling inner pipes are both arc surfaces of 112.5 degrees, and the side wall of the thin-wall sampling inner pipe 2 formed by splicing the first tangent plane 211 and the second tangent plane 221 after being overlapped front and back is an arc surface of 180 degrees.
The upper portion of thin wall sample outer tube 1 is equipped with the slip track 6 that the circumference wall hoop of thin wall sample outer tube 1 was arranged, be equipped with first slider 71 and second slider 72 in the slip track 6, first slider and second slider all can slide in slip track 6, first slider and second slider are equipped with the screw rod 8 that passes first piece thin wall sample inner tube 21 and second piece thin wall sample inner tube 22 respectively, this one end that the other end of screw rod 8 passed a connecting steel plate 4 that upwards extends respectively and screw rod 8 passed connecting steel plate 4 is equipped with fixation nut 9.
The upper end of the connecting steel plate 4 is provided with a handle 5, the hand-held part of the handle 5 faces the outer circumference of the thin-wall sampling outer tube 1, and the handle 5 is used for driving the first thin-wall sampling inner tube 21 or the second thin-wall sampling inner tube 22 to form a first section 211 of the first thin-wall sampling inner tube 21 and a second section 221 of the second thin-wall sampling inner tube 22 so as to cut the soft soil and lift the soft soil sampling device upwards.
In other embodiments, the upper end of the connecting steel plate 4 may further be provided with a driving motor, and the driving motor is configured to drive the first thin-walled sampling inner tube 21 or the second thin-walled sampling inner tube 22 to form the first cut surface 211 of the first thin-walled sampling inner tube 21 and the second cut surface 221 of the second thin-walled sampling inner tube 22 to cut the soft soil. Of course, in other embodiments, other variations are possible and fall within the scope of the invention.
Placing the first and second thin-wall sampling inner tubes 21 and 22 of the two 112.5-degree arc surfaces into the thin-wall sampling outer tube 1 of the 225-degree arc surface; the first sliding block 71 and the second sliding block 72 are respectively welded with the screw 8 and are placed in the sliding track 6 of the thin-wall sampling outer tube 1, and the screw 8 penetrates through the thin-wall sampling outer tube 1 and the thin-wall sampling inner tube 2; the handle 5 is welded on the connecting steel plate 4, and the connecting steel plate 4 is fastened on the thin-wall sampling inner pipe 2 through a nut 9. When in use, the thin-wall sampling inner tube 2 is put into the thin-wall sampling outer tube 1, and the handle 5 vertically and slowly penetrates the thin-wall sampling inner tube 2 and the blade 3 of the thin-wall sampling outer tube 1 into the soft soil; slowly penetrating into the soft soil sampling device to a specified distance, rotating the handle 5 to cut the soft soil by rotating the two thin-wall sampling inner tubes, closing the two thin-wall sampling inner tubes after rotating for 90 degrees, and finishing cutting; lifting the handle 5, and taking out the whole soft soil sampling device; after the soft soil sampling device is taken out, the nut 9 is disassembled, the first sliding block 71, the second sliding block 72 and the screw 8 are pulled out, the thin-wall sampling outer pipe 1 slides out, the first thin-wall sampling inner pipe 21 and the second thin-wall sampling inner pipe 22 slide out, and sampling of the soft soil is completed. And (3) cutting different shapes of the soft soil sample to perform a physical property test, a one-dimensional compression test, a direct shear test, a triaxial test and the like of the basic soil body. The physical and mechanical property index parameters of indoor undisturbed soft soil can be provided for an indoor model test.
The above-described embodiments are intended to illustrate the present invention, but not to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit of the present invention and the scope of the claims fall within the scope of the present invention.
Claims (4)
1. The utility model provides an indoor model test's weak soil sampling device, a serial communication port, indoor model test's weak soil sampling device includes thin wall sample outer tube and thin wall sample inner tube, the internal diameter of thin wall sample outer tube is the same with the external diameter of thin wall sample inner tube, the lower part of thin wall sample outer tube and thin wall sample inner tube all has the sword foot, the both ends of thin wall sample outer tube and thin wall sample inner tube are the form of running through, and the lateral wall of thin wall sample outer tube is for being the arc surface that surpasses 180 degrees, and thin wall sample inner tube includes first thin wall sample inner tube and second piece thin wall sample inner tube, first piece thin wall sample inner tube and second piece thin wall sample inner tube all can rotate and make the lateral wall of thin wall sample outer tube and the lateral wall of thin wall sample inner tube form closed tube-shape along the circumferencial direction of thin wall sample outer tube inside wall, and the lateral wall of thin wall sample inner tube that second piece thin wall sample inner tube formed by the concatenation is the circular arc that is 180 degrees When the side wall of the thin-wall sampling outer pipe and the side wall of the thin-wall sampling inner pipe form a closed cylinder shape, two opposite overlapped redundant parts are formed between the side wall of the thin-wall sampling outer pipe and the side wall of the thin-wall sampling inner pipe; the end parts of the first thin-wall sampling inner tube and the second thin-wall sampling inner tube which are spliced when the side wall of the thin-wall sampling outer tube and the side wall of the thin-wall sampling inner tube form a closed cylinder shape respectively have a first section and a second section, and the first section of the first thin-wall sampling inner tube and the second section of the second thin-wall sampling inner tube form a sample cutting to soft soil under the rotation of the first thin-wall sampling inner tube and the second thin-wall sampling inner tube along the circumferential direction of the inner side wall of the thin-wall sampling outer tube;
when the side wall of the thin-wall sampling outer pipe and the side wall of the thin-wall sampling inner pipe form a closed cylinder shape, a first section of a first thin-wall sampling inner pipe and a second section of a second thin-wall sampling inner pipe are overlapped front and back;
the upper portion of thin wall sample outer tube is equipped with the slip track of arranging along the circumference wall ring of thin wall sample outer tube, be equipped with first slider and second slider in the slip track, first slider and second slider are equipped with the screw rod that passes first piece thin wall sample inner tube and second piece thin wall sample inner tube respectively, the other end of screw rod passes the connecting steel plate of an upward extension respectively and this one end that the screw rod passed connecting steel plate is equipped with fixation nut.
2. A soft soil sampling device for an indoor model test as claimed in claim 1, wherein the side wall of the thin-walled outer sampling tube of the soft soil sampling device is a 225 degree arc surface, the side walls of the first and second thin-walled inner sampling tubes are both 112.5 degree arc surfaces, and the side wall of the thin-walled inner sampling tube spliced after the first and second cut surfaces are overlapped in front and back is a 180 degree arc surface.
3. The soft soil sampling device for the indoor model test of claim 1, wherein a handle is arranged at the upper end of the connecting steel plate, a hand-held part of the handle faces the outer circumference side of the thin-wall sampling outer pipe, and the handle is used for driving the first thin-wall sampling inner pipe or the second thin-wall sampling inner pipe to form a first section of the first thin-wall sampling inner pipe and a second section of the second thin-wall sampling inner pipe to cut the soft soil and lift the soft soil sampling device upwards.
4. A soft soil sampling device for an indoor model test according to claim 1, wherein a driving motor is arranged at the upper end of the connecting steel plate, and the driving motor is used for driving the first thin-wall sampling inner tube or the second thin-wall sampling inner tube to form a first cut surface of the first thin-wall sampling inner tube and a second cut surface of the second thin-wall sampling inner tube to cut a soft soil sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910762126.5A CN110487586B (en) | 2019-08-19 | 2019-08-19 | Soft soil sampling device for indoor model test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910762126.5A CN110487586B (en) | 2019-08-19 | 2019-08-19 | Soft soil sampling device for indoor model test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110487586A CN110487586A (en) | 2019-11-22 |
| CN110487586B true CN110487586B (en) | 2021-09-14 |
Family
ID=68552080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910762126.5A Active CN110487586B (en) | 2019-08-19 | 2019-08-19 | Soft soil sampling device for indoor model test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110487586B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358392A (en) * | 2020-03-06 | 2021-09-07 | 靳职锋 | Mechanical device for taking undisturbed sample in exploratory well on ground |
| CN112179703B (en) * | 2020-10-14 | 2022-09-09 | 张秋吉 | Sampling device for soil remediation |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749220B (en) * | 2012-06-28 | 2016-04-27 | 苏州国环环境检测有限公司 | Wet soil sampler |
| CN103792106B (en) * | 2012-10-26 | 2016-03-23 | 中国农业大学 | Original state frozen soil sampler |
| JP6868263B2 (en) * | 2016-11-22 | 2021-05-12 | 鉱研工業株式会社 | Sampling method and sampling device |
| CN106769177B (en) * | 2016-11-25 | 2019-03-05 | 吉林大学 | Portable shallow layer soft soil original state sampling device and sampling method |
| CN108426734B (en) * | 2018-03-26 | 2020-10-02 | 中山大学 | Layered weak disturbance undisturbed soft soil sampler and sampling method |
| CN108801687B (en) * | 2018-08-09 | 2024-01-12 | 江苏鸿基水源科技股份有限公司 | Portable undisturbed soft soil sampler and working method thereof |
| CN211122048U (en) * | 2019-08-19 | 2020-07-28 | 中国电建集团华东勘测设计研究院有限公司 | Soft soil sampling device for indoor model test |
-
2019
- 2019-08-19 CN CN201910762126.5A patent/CN110487586B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110487586A (en) | 2019-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110487586B (en) | Soft soil sampling device for indoor model test | |
| CN107367412B (en) | Sample preparation and sampling combination unit and method suitable for soil test standard sample | |
| CN203101097U (en) | Direct-pushing-type columnar soil sampler with scales | |
| CN100491959C (en) | Portable semi-automatic rotary undisturbed soil sampler | |
| CN103174122B (en) | Lateral stress pore pressure probe used for testing soil static lateral pressure coefficient | |
| CN103115832A (en) | Tester for soil pressure bearing and shearing test | |
| CN107063895B (en) | A kind of rock mass interlayer weak intercalated layer field direct shear test method | |
| CN211122048U (en) | Soft soil sampling device for indoor model test | |
| CN111650085A (en) | Portable soil body normal position density tester | |
| CN102590476A (en) | Vertisol expansion coefficient measurement device and application thereof | |
| CN204514650U (en) | A kind of rotary sampling device of in-site measurement soil body dry density | |
| CN205483639U (en) | Novel original state soil geotome | |
| CN202401448U (en) | Novel soil sampling device | |
| CN217585684U (en) | Engine connecting rod small end special-shaped hole detection equipment | |
| CN106092809A (en) | A kind of unsaturated soil suction field measurement apparatus based on filter paper method | |
| CN107655740B (en) | Device and method for manufacturing test piece capable of testing shear strength of joint surfaces of different anchoring angles | |
| CN111103168A (en) | Layered sampling equipment for soil detection | |
| CN214747663U (en) | Soil thickness measuring device for soil surveying and mapping | |
| CN111549747A (en) | Soil sampling device and method for roadbed compactness detection | |
| CN212060013U (en) | Bored concrete pile reaming interior concrete quality detection device based on concrete hydration heat | |
| CN212646386U (en) | Portable soil body normal position density tester | |
| CN107024373A (en) | A kind of three axle soil-cutter devices | |
| CN211735334U (en) | Intelligent miniature T-shaped sounding instrument | |
| CN102854070A (en) | Concrete core simple-shear device | |
| CN209311238U (en) | A kind of littoral facies soft clay slurry-Soil Interface shear parameters measuring instrument |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |