CN111189702A - Device for researching clay characteristics by using static triaxial electrical method - Google Patents
Device for researching clay characteristics by using static triaxial electrical method Download PDFInfo
- Publication number
- CN111189702A CN111189702A CN202010024564.4A CN202010024564A CN111189702A CN 111189702 A CN111189702 A CN 111189702A CN 202010024564 A CN202010024564 A CN 202010024564A CN 111189702 A CN111189702 A CN 111189702A
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- triaxial
- electrode
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- sample
- electrostatic
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- 230000003068 static effect Effects 0.000 title claims abstract description 16
- 239000004927 clay Substances 0.000 title claims abstract description 13
- 238000010291 electrical method Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052802 copper Inorganic materials 0.000 claims abstract description 11
- 239000010949 copper Substances 0.000 claims abstract description 11
- 238000004080 punching Methods 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 claims description 14
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 14
- 239000002689 soil Substances 0.000 abstract description 14
- 230000006378 damage Effects 0.000 abstract description 10
- 238000012669 compression test Methods 0.000 abstract description 8
- 238000004458 analytical method Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/066—Special adaptations of indicating or recording means with electrical indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0256—Triaxial, i.e. the forces being applied along three normal axes of the specimen
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0284—Bulk material, e.g. powders
Abstract
The invention discloses a device for researching clay characteristics by an electrostatic triaxial electrical method, which comprises an electrostatic triaxial instrument, an electrical testing host, a multi-way electrode converter, a large wire, electrode interfaces, measuring wires and a sample to be tested, wherein the top of the electrostatic triaxial instrument is annularly provided with wire passing holes around a pressurizing column, a plurality of electrode interfaces are connected with the large wire through a circuit, a plurality of measuring wires connected with copper sheets sequentially penetrate out of a punching rubber film and are independently connected to one electrode interface, the copper sheets are distributed on the surface of a sample body, the large wire is connected to the multi-way electrode converter through the circuit, and the multi-way electrode converter is connected to a data interface of the electrical testing host through the circuit. The device is combined with electrical prospecting equipment to monitor the resistivity of the surface of the sample in the static triaxial test process in real time, so that the problem that the loose soil material is difficult to monitor in real time due to low strength is solved, and the three-dimensional inversion of the damage process of the triaxial compression test of the loose soil material sample is realized.
Description
The technical field is as follows:
the invention relates to a device for researching the characteristics of clay by an electrostatic triaxial electrical method.
Background art:
the static triaxial test of soil is one of important test means in modern geotechnical engineering, and because of the inherent characteristics of the instrument, the static triaxial test of soil can accurately provide mechanical property indexes of soil samples. For static triaxial experiments of soil, researchers have made a lot of experimental research and data comparison, but with the proposal of new ideas, an experiment based on resistivity change of a soil sample measured by an electrical method in the static triaxial experiment process is difficult to operate due to the fact that the clay and gravel soil bulk materials are low in strength and easy to damage, and the implementation of the idea of measuring the resistivity of the soil sample by the electrical method is greatly restricted. In the triaxial compression test, the discrete material cannot be used for monitoring the potential, resistivity, strain and the like of the surface of a sample in the sample destruction process in real time by a method of sticking a sensor, a strain gauge and the like on the surface of the sample like a hard rock mass material, so that the clay compression test is limited to the analysis of macroscopic phenomena, the data processing analysis and the like, the three-dimensional destruction process analysis depends on numerical software, and the three-dimensional destruction process analysis has great error.
In tests such as compression and tension of rock mass materials, a technology for monitoring potential, potential and strain on the surface of a rock mass in real time is widely used, and the method is difficult to apply to samples of discrete materials such as clay and the like and is not easy to realize. The research and analysis of the triaxial compression test of the discrete material are limited to the analysis of the macroscopic damage phenomenon of the sample, the scanning of an electron microscope, the processing of test data and the like, the three-dimensional inversion analysis for realizing the triaxial compression test of the discrete material depends on numerical simulation, and the numerical simulation method has great errors and cannot truly reflect the actual damage process of the sample to a certain extent.
The invention content is as follows:
the technical problem to be solved by the invention is as follows: the device is combined with electrical prospecting equipment to monitor the resistivity of the surface of the sample in the static triaxial test process in real time, so that the problem that the loose soil material is difficult to monitor in real time due to low strength is solved, and the three-dimensional inversion of the damage process of the triaxial compression test of the loose soil material sample is realized.
In order to solve the technical problems, the invention is realized by the following technical scheme: a device for researching clay characteristics by an electrostatic triaxial method comprises an electrostatic triaxial instrument, an electrical measurement host, a multi-way electrode converter, a large wire, an electrode interface, a measurement wire and a sample to be measured, the top of the static triaxial apparatus is annularly provided with a line passing hole around the pressurizing column, a plurality of measuring lines pass through the line passing holes one by one, the wire through hole is sealed by an adhesive, the sample to be tested consists of a sample body and a punched rubber film, the sample body is arranged in the punching rubber film, a plurality of electrode interfaces are connected with a large wire through a circuit, a plurality of measuring wires connected with copper sheets sequentially penetrate out of the punching rubber film and are independently connected to one electrode interface, the copper sheets are distributed on the surface of the sample body, the large wire is connected to a multi-way electrode converter through a circuit, and the multi-way electrode converter is connected to a data interface of an electric measurement host through the circuit.
Preferably, the measuring line is a measuring line with an insulating film outside.
Preferably, the large wire is a main wire of a high-density electrical method.
Preferably, the part of the perforated rubber film, which is contacted with the measuring line, is sealed by flexible glue.
Compared with the prior art, the invention has the advantages that: the device is combined with electrical prospecting equipment to monitor the resistivity of the surface of the sample in the static triaxial test process in real time, so that the problem that the loose soil material is difficult to monitor in real time due to low strength is solved, and the three-dimensional inversion of the damage process of the triaxial compression test of the loose soil material sample is realized.
Description of the drawings:
the invention is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic view of a sample to be measured.
Fig. 3 is a schematic diagram of the structure of a static triaxial apparatus.
The specific implementation mode is as follows:
the present invention will be described in detail with reference to specific embodiments below:
as shown in fig. 1 to 3, the device for studying clay characteristics by an electrostatic triaxial electrical method comprises an electrostatic triaxial apparatus 1, an electrical measurement host 2, a multi-way electrode converter 31, a large wire 32, an electrode interface 33, a measurement wire 4 and a sample to be measured, wherein the top of the electrostatic triaxial apparatus 1 is annularly provided with a wire through hole 12 around a pressure column 11, the arranged wire through hole 12 avoids an exhaust hole valve 7, a plurality of measurement wires 4 pass through the wire through hole 12 one by one, in order to ensure the tightness of the device, the wire through hole 12 is sealed by an adhesive, the sample to be measured comprises a sample body 51 and a perforated rubber film 52, the sample body 51 is arranged in the perforated rubber film 52, the plurality of electrode interfaces 33 are connected with the large wire 32 through a circuit, the plurality of measurement wires connected with copper sheets 6 sequentially pass through the perforated rubber film 52 and are individually connected to one electrode interface 33, the copper sheets 6 are distributed on the surface of the sample body 51, and the copper sheet 6 is closely arranged on the surface of the sample body 51, the copper sheet 6 can collect the information on the surface of the sample body 51, the large wire 32 is connected to the multi-way electrode converter 31 through a circuit, and the multi-way electrode converter 31 is connected to the data interface of the electric measurement host machine 2 through a circuit. The large wire 32 is a main wire of a high-density electrical method. The measuring line 4 is a measuring line with an insulating film outside, and data acquisition and confining pressure application are not influenced. In order to prevent water from entering the inside of the perforated rubber film 52 during the test, the portion of the perforated rubber film 52 in contact with the measuring line 4 is sealed with a flexible glue.
The working process is as follows: the static triaxial apparatus 1 is a conventional static triaxial apparatus, the static triaxial apparatus 1 is used for pressurizing and testing a sample to be tested, an electrical prospecting principle is adopted, copper sheets 6 distributed on the surface of a sample body 51 transmit collected data to a large wire 32 and transmit the data to a multi-path electrode converter 31 through a circuit, the electrode converter 31 transmits the data to an electrical logging host machine 2, three-dimensional inversion of the triaxial compression test damage process of the loose soil material sample is realized through a screen of the electrical logging host machine 2 after the data is processed, the electrical logging host machine 2 adopts a DUK-2A high-density electrical method measuring system produced by a Chongqing geological instrument factory, the system consists of a DZD-6A multifunctional current electrical method instrument and a multi-path electrode converter, and high-resolution ZD, CT and CT are performed by utilizing the power supply of the multi-path converter and the automatic conversion of measuring electrodes based on the conventional resistivity prospecting principle and combining the conventional resistivity, High efficiency electrical prospecting. The DZD-6A multifunctional direct current electrical method instrument can be used by a single machine, so that resistivity method exploration under a conventional mode can be realized, more than 14 wiring working modes and 9 electrode arrangement modes can be directly displayed during high-density measurement, the maximum power supply voltage is 1000V, the maximum power supply current is 6A, the apparent polarizability measurement precision is +/-1% +/-1 word, the total number of the convertible electrodes of the multi-way electrode converter is 120, and the maximum current is 2A.
It is to be emphasized that: it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (4)
1. An apparatus for studying clay characteristics by an electrostatic triaxial method is characterized in that: the device comprises a static triaxial instrument (1), an electrical measurement host (2), a multi-channel electrode converter (31), a large wire (32), electrode interfaces (33), measurement wires (4) and a test sample to be measured, wherein the top of the static triaxial instrument (1) is annularly provided with wire through holes (12) around a pressurizing column (11), a plurality of measurement wires (4) pass through the wire through holes (12) one by one, the wire through holes (12) are sealed by an adhesive, the test sample to be measured consists of a sample body (51) and a punching rubber film (52), the sample body (51) is arranged in the punching rubber film (52), a plurality of electrode interfaces (33) are arranged on the large wire (32) through circuit connection, a plurality of measurement wires connected with copper sheets (6) sequentially pass through the punching rubber film (52) and are individually connected to one electrode interface (33), and the copper sheets (6) are distributed on the surface of the sample body (51), the large wire (32) is connected to the multi-electrode converter (31) through a circuit, and the multi-electrode converter (31) is connected to a data interface of the electric measurement host (2) through the circuit.
2. The device for studying the characteristics of clay by the electrostatic triaxial method according to claim 1, wherein: the measuring line (4) is a measuring line with an insulating film outside.
3. The device for studying the characteristics of clay by the electrostatic triaxial method according to claim 1, wherein: the large wire (32) is a main wire of a high-density electrical method.
4. The device for studying the characteristics of clay by the electrostatic triaxial method according to claim 1, wherein: and the part of the perforated rubber film (52) in contact with the measuring line (4) is sealed by flexible glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010024564.4A CN111189702A (en) | 2020-01-10 | 2020-01-10 | Device for researching clay characteristics by using static triaxial electrical method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010024564.4A CN111189702A (en) | 2020-01-10 | 2020-01-10 | Device for researching clay characteristics by using static triaxial electrical method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111189702A true CN111189702A (en) | 2020-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010024564.4A Pending CN111189702A (en) | 2020-01-10 | 2020-01-10 | Device for researching clay characteristics by using static triaxial electrical method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111189702A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485302A (en) * | 2020-11-17 | 2021-03-12 | 中国科学院武汉岩土力学研究所 | Method and device for measuring anisotropy in soil body compression process |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743787A (en) * | 2013-12-23 | 2014-04-23 | 石家庄铁道大学 | Tri-axial testing device for testing water content distribution of soil sample |
| CN105277439A (en) * | 2015-11-19 | 2016-01-27 | 中国矿业大学 | Geotechnical triaxial test sample radial deformation testing device and method |
| CN106680304A (en) * | 2016-06-22 | 2017-05-17 | 湖南大学 | Method for testing moisture content of unsaturated soil triaxial specimen in real time |
| CN206479579U (en) * | 2017-03-03 | 2017-09-08 | 安徽理工大学 | A kind of axle sample resistivity experimental provision of temperature control three |
| US9880081B1 (en) * | 2017-03-07 | 2018-01-30 | Ramesh Chandra Gupta | Expandable jacket for triaxial, unconfined and uniaxial compression tests and test device for three-dimensional consolidation and settlement tests |
| CN208223954U (en) * | 2018-01-23 | 2018-12-11 | 江苏科技大学 | The device of resistivity measurement is realized in dynamic triaxial |
| CN109323925A (en) * | 2018-09-25 | 2019-02-12 | 西南科技大学 | A kind of method and system for testing name consolidation pressure mud shale early period |
-
2020
- 2020-01-10 CN CN202010024564.4A patent/CN111189702A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743787A (en) * | 2013-12-23 | 2014-04-23 | 石家庄铁道大学 | Tri-axial testing device for testing water content distribution of soil sample |
| CN105277439A (en) * | 2015-11-19 | 2016-01-27 | 中国矿业大学 | Geotechnical triaxial test sample radial deformation testing device and method |
| CN106680304A (en) * | 2016-06-22 | 2017-05-17 | 湖南大学 | Method for testing moisture content of unsaturated soil triaxial specimen in real time |
| CN206479579U (en) * | 2017-03-03 | 2017-09-08 | 安徽理工大学 | A kind of axle sample resistivity experimental provision of temperature control three |
| US9880081B1 (en) * | 2017-03-07 | 2018-01-30 | Ramesh Chandra Gupta | Expandable jacket for triaxial, unconfined and uniaxial compression tests and test device for three-dimensional consolidation and settlement tests |
| CN208223954U (en) * | 2018-01-23 | 2018-12-11 | 江苏科技大学 | The device of resistivity measurement is realized in dynamic triaxial |
| CN109323925A (en) * | 2018-09-25 | 2019-02-12 | 西南科技大学 | A kind of method and system for testing name consolidation pressure mud shale early period |
Non-Patent Citations (1)
| Title |
|---|
| 王锺琦 等: "《岩土工程测试技术》", 中国建筑工业出版社, pages: 68 - 69 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485302A (en) * | 2020-11-17 | 2021-03-12 | 中国科学院武汉岩土力学研究所 | Method and device for measuring anisotropy in soil body compression process |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Ping Inventor after: Chang Wenbin Inventor after: Ma Jinlian Inventor after: Wang Huijuan Inventor after: Xu Shiyang Inventor after: Chai Shaofeng Inventor after: Yu Yifan Inventor after: Li Xudong Inventor before: Chang Wenbin Inventor before: Wang Ping Inventor before: Ma Jinlian Inventor before: Wang Huijuan Inventor before: Xu Shiyang Inventor before: Chai Shaofeng Inventor before: Yu Yifan Inventor before: Li Xudong |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200522 |
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| RJ01 | Rejection of invention patent application after publication |