CN211697524U - A survey device that is used for contrast electroosmosis viscosity-reducing effect under local discontinuous state of soil body - Google Patents
A survey device that is used for contrast electroosmosis viscosity-reducing effect under local discontinuous state of soil body Download PDFInfo
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- CN211697524U CN211697524U CN201921701030.XU CN201921701030U CN211697524U CN 211697524 U CN211697524 U CN 211697524U CN 201921701030 U CN201921701030 U CN 201921701030U CN 211697524 U CN211697524 U CN 211697524U
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Abstract
The utility model discloses a survey device that is used for contrast electroosmosis visbreaking effect under local discontinuous state of soil body, by a glass section of thick bamboo, rings, the stopper, the wooden frame, miniature camera head, the wiring wooden plug, the suspender, the electrode paster, concave type conducting groove, the circular telegram line, the conductive plug, the soil body, the soil box, a power supply, plate electrode and tensiometer constitute jointly, at glass bobbin base symmetrical arrangement electrode paster, insert experimental required concave type conducting groove with the conductive plug of circular telegram line one end before experimental beginning, the other end is connected in the power negative pole, and connect the plate electrode in the positive pole of power supply, after certain circular telegram time, pulling force through tensiometer application makes a glass section of thick bamboo and soil body separation, survey soil body adhesion size under the electroosmosis. The electrode patches symmetrically arranged at the bottom of the glass cylinder can facilitate comparison of differences of electroosmosis viscosity-reducing effects in discontinuous soil, and the method is an effective means for researching influence of electroosmosis on soil adhesion force in a local discontinuous state of soil.
Description
Technical Field
The utility model belongs to the technical field of tunnel and underground works test instrument, in particular to a survey device that is used for contrast electroosmosis visbreaking effect under the local discontinuous state of soil body.
Background
With the increasing development of economy and the continuous improvement of industrialization level, the shield construction method is widely applied to tunnel projects such as cross-river and cross-sea, cross-mountain and cross-mountain, and the like, but in actual construction, the earth pressure balance shield machine is often subjected to the phenomena of clay blockage and adhesion to machinery in a clay-rich stratum, so that the torque of a cutter head is increased; along with the advancing of the shield, the degree of mud cake formation of the cutter head on the surface of the machine is continuously increased, so that the construction progress of shield tunneling is reduced, and even mechanical equipment is damaged. According to a soil-solid material five-layer interface model proposed in the article of 'study on adhesion and friction performance of soil to solid material', a water film between soil and solid surface is distributed with five kinds of water with different structures in sequence under the condition of sufficient thickness, the middle layer is free water, the structure of the free water is looser than that of other four layers, so that the interaction force between the soil and the solid is weakest, and when the thickness of the water film is small and is not enough to form a free water layer, the interaction between the soil and the solid is stronger. The water film can be thickened by utilizing the soil electroosmosis, thereby reducing the adhesion between the soil and the solid material and achieving the effect of viscosity reduction and soil removal. Therefore, researching the influence rule of the electroosmosis method on the soil adhesion is an effective means for solving the problem of mud cake formation of the cutter head.
At present, the research on soil adhesion by using an electroosmosis method at home and abroad has related researches, such as: as early as 1949, Casagrande was in Electro-osmosis in soils: the Ge 'otechnique, Vol' article introduces and promotes the electroosmosis method as a soil body drainage means; in 1998, Hades and Hades, Junxi and Lu spring, etc., the non-smooth surface electroosmosis is carried out by using the non-smooth bionics information of the surface of the soil animal, taking the non-smooth convex hull as the positive surface and the working part as the negative surface. In 2013, Lujia tested in the feasibility discussion of electroosmosis method applied to underground drilling and mud wrapping problem by using a multifunctional sand box, and an electrode rod was arranged in a continuous soil body to measure the adhesion of the continuous soil body. However, these researches on the device and method for measuring the adhesion force by the electroosmosis method cannot effectively test the electroosmosis viscosity-reducing effect in the soil local discontinuous state, and do not relate to a test method for electroosmosis on a special curved surface, and a difference between the electroosmosis viscosity-reducing effect on different positions of the special curved surface and the electroosmosis viscosity-reducing effect on different positions of the soil local discontinuous state.
For overcoming the above-mentioned not enough, the utility model provides a survey device that is used for contrast electroosmosis viscosity-reducing effect under the local discontinuous state of soil body, the analysis is the soil body adhesion value of the different positions of electroosmosis under the local discontinuous state of soil body, obtains the influence of electroosmosis viscosity-reducing effect under the local discontinuous state of soil body to prevention and cure for blade disc knot mud cake provides effective analysis foundation.
SUMMERY OF THE UTILITY MODEL
The utility model provides a survey device that is used for contrast electroosmosis viscosity-reducing effect under the local discontinuous state of soil body, its aim at utilizes the electroosmosis method to measure the experimental of soil body adhesion, through the adhesion value of different positions under the special curved surface of test to reach the contrast in the influence law of electroosmosis viscosity-reducing effect under the local discontinuous state of soil body, can use among the processing engineering of cutter head caking cake.
The utility model provides a survey device for comparing electric osmosis visbreaking effect under local discontinuous state of soil body, by a glass section of thick bamboo, rings, spacing piece, wooden frame, miniature camera head, wiring wooden plug, suspender, the electrode paster, concave type conducting groove, the circular telegram line, the conductive plug, the soil body, the soil box, a power supply, plate electrode and tensiometer constitute jointly, at glass section of thick bamboo bottom symmetric arrangement electrode paster, insert the conducting plug of circular telegram line one end into the concave type conducting groove that the experiment required before the experiment begins, the other end is connected to the power negative pole, and connect the plate electrode to the positive pole of power supply, after certain circular telegram time, make glass section of thick bamboo and soil body separation through the pulling force that the tensiometer applyed, survey the soil body adhesion strength under the electric osmosis. Through the difference of the electroosmosis viscosity-reducing effect of the soil body under the local discontinuous state, an analysis basis is provided for the removal of the cutter disc mud cake in the actual engineering.
The device for measuring the electroosmosis viscosity-reducing effect in the local discontinuous state of the soil body is characterized in that 4 lifting holes are symmetrically formed in the position, 2cm away from the top end, of the upper portion of the glass cylinder 1, 4 wiring wooden plugs 6 are inserted into the lifting holes, and the lifting rings 2 are connected with the wiring wooden plugs 6 through high-temperature-resistant lifting belts 7; the glass cylinder 1 is made of transparent glass, so that the micro camera 5 can observe the change of the soil body 12 under the electroosmosis action through the glass cylinder 1 conveniently; the limiting block 3 is fixed in the middle of the glass cylinder 1 by epoxy resin glue and is 6cm away from the top end; a central circular hole is reserved in the center of the wood frame 4, so that conductive plugs 11 at two ends of the electrified wire 10 can be conveniently connected with the concave conductive groove 9 and the negative electrode of the power supply 14; meanwhile, four gaps are reserved on the wooden frame 4, so that the wooden frame 4 is prevented from touching the wiring wooden plug 6 when being pressed down in the glass cylinder 1; 4 miniature cameras 5 are symmetrically arranged on the wooden frame 4, so that the change conditions of water and soil on the surface of the soil body 12 below the semi-cylinder on the bottom surface of the glass cylinder 1 in the whole electroosmosis process can be observed and recorded; the bottom of the glass cylinder 1 is symmetrically provided with strip-shaped electrode patches 8, and the electrode patches 8 are fixed at the bottom of the glass cylinder 1 through epoxy resin glue; the concave conductive groove 9 is arranged in the glass cylinder 1 and is connected with the electrode patch 8 through a wire, and a small round hole is formed in the glass cylinder 1 at the connecting line, so that the wire can pass through the small round hole conveniently; by arranging the internal wiring between the concave conductive groove 9 and the glass tube 1, the electrode patch 8 is prevented from wiring from the soil, the disturbance to the soil body 12 is reduced, and the soil body sample preparation is more convenient;
the device for measuring the electroosmosis viscosity-reducing effect of the soil body in the local discontinuous state is characterized in that the concave conductive groove 9 at one position can be selected as a connection by the conductive plug 11 at one end of the electrified wire 10, so that the electroosmosis viscosity-reducing conditions of the electrode patches 8 at different positions can be conveniently and directly measured.
The device for measuring the electroosmosis viscosity-reducing effect of the soil body in the local discontinuous state is characterized in that the bottom of the glass cylinder 1 has a local discontinuous space in the soil body 12, and the electrode patches 8 are symmetrically arranged at the bottom of the glass curved surface, so that the influence of the local discontinuous space on the electroosmosis viscosity-reducing effect of the soil body can be conveniently researched.
Advantageous effects
The utility model provides a survey device that is used for contrast electroosmosis visbreaking effect under local discontinuous state of soil body, the device include a glass section of thick bamboo 1, rings 2, stopper 3, wooden frame 4, miniature camera 5, wiring wooden plug 6, suspender 7, electrode paster 8, concave type conducting groove 9, circular telegram line 10, conductive plug 11, soil body 12, soil box 13, power 14, plate electrode 15 and tensiometer 16. 4 hanging holes are symmetrically formed in the upper portion of the glass cylinder 1 at a position 2cm away from the top end, 4 wiring wooden plugs 6 are inserted into the hanging holes, and the hanging ring 2 is connected with the wiring wooden plugs 6 through high-temperature-resistant hanging strips 7; the glass cylinder 1 is made of transparent glass, so that the micro camera 5 can conveniently observe the change condition of the soil body 12 under the electroosmosis action through the glass cylinder 1; the limiting block 3 is fixed in the middle of the glass cylinder 1 by epoxy resin glue and is 6cm away from the top end; a central circular hole is reserved in the center of the wood frame 4, so that conductive plugs 11 at two ends of the electrified wire 10 are conveniently connected with the concave conductive groove 9 and the negative electrode of the power supply 14; meanwhile, four gaps are reserved on the wooden frame 4, so that the wooden frame 4 is prevented from touching the wiring wooden plug 6 when being pressed down in the glass cylinder 1; 4 miniature cameras 5 are symmetrically arranged on the wooden frame 4, so that the change conditions of water and soil on the surface of the soil body 12 below the semi-cylinder on the bottom surface of the glass cylinder 1 in the whole electroosmosis process can be observed and recorded; the bottom of the glass cylinder 1 is symmetrically provided with strip-shaped electrode patches 8, and the electrode patches 8 are fixed at the bottom of the glass cylinder 1 through epoxy resin glue; the concave conductive groove 9 is arranged inside the glass cylinder 1 and is connected with the electrode patch 8 through a wire, and a small round hole is formed in the glass cylinder 1 at the connecting line, so that the wire can pass through the small round hole conveniently; by arranging the internal wiring between the concave conductive groove 9 and the glass tube 1, the electrode patch 8 is prevented from wiring from the soil, the disturbance to the soil body 12 is reduced, and the soil body sample preparation is more convenient. The method for testing the electroosmosis viscosity-reducing effect of the soil body in the local discontinuous state by the device has the following beneficial effects:
1) because the bottom of the glass cylinder has a local discontinuous space in the soil body, the electrode patches are symmetrically arranged at the bottom of the glass curved surface, so that the influence of the local discontinuous space on the electroosmosis viscosity reducing effect of the soil body can be conveniently researched and compared.
2) The conducting plug at one end of the electrified wire can select the concave conducting groove at any position as connection, so that the electroosmosis viscosity reduction condition of the electrode patches at different positions can be directly measured conveniently.
3) The micro camera is arranged, so that the change conditions of water and soil on the surface of the soil below the semi-cylinder on the bottom surface of the glass cylinder in the whole electroosmosis process can be observed and recorded; and meanwhile, the glass cylinder is selected as a tension device, so that the micro camera can observe the soil body through the glass cylinder conveniently.
4) Through setting up the inside line of walking of concave type electrically conductive groove and glass section of thick bamboo, avoid the electrode paster to walk the line from the soil, reduced the disturbance to soil body 12, soil body system appearance is also more convenient simultaneously.
Drawings
FIG. 1 is a cross-sectional view of a measuring device for comparing the electroosmotic viscosity reduction effect in a local discontinuous state of a soil body according to the present invention;
fig. 2 is a layout of the electrode patch and the concave conductive slot, wherein (a) is a front view, (b) is a left view, and (c) is a bottom view;
FIG. 3 is a top view of a wooden frame;
description of reference numerals: the device comprises a glass tube 1, a hanging ring 2, a limiting block 3, a wood frame 4, a miniature camera 5, a wiring wood plug 6, a hanging strip 7, an electrode patch 8, a concave conductive groove 9, a power line 10, a conductive plug 11, a soil body 12, a soil box 13, a power supply 14, an electrode plate 15, a tension meter 16 and a central round hole 17.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
A measuring device for comparing electroosmosis viscosity-reducing effect under local discontinuous state of soil body is composed of a glass cylinder 1, a hanging ring 2, a limiting block 3, a wood frame 4, a miniature camera 5, a wiring wood plug 6, a hanging strip 7, an electrode patch 8, a concave conductive groove 9, a live wire 10, a conductive plug 11, a soil body 12, a soil box 13, a power supply 14, an electrode plate 15 and a tension meter 16;
4 hanging holes are symmetrically formed in the upper portion of the glass cylinder 1 at a position 2cm away from the top end, 4 wiring wooden plugs 6 are inserted into the hanging holes, and the hanging ring 2 is connected with the wiring wooden plugs 6 through high-temperature-resistant hanging strips 7; the glass cylinder 1 is made of transparent glass, so that the micro camera 5 can conveniently observe the change condition of the soil body 12 under the electroosmosis action through the glass cylinder 1;
the limiting block 3 is fixed in the middle of the glass cylinder 1 by epoxy resin glue and is 6cm away from the top end;
a central circular hole is reserved in the center of the wood frame 4, so that conductive plugs 11 at two ends of the electrified wire 10 can be conveniently connected with the concave conductive groove 9 and the negative electrode of the power supply 14; meanwhile, four gaps are reserved on the wooden frame 4, so that the wooden frame 4 is prevented from touching the wiring wooden plug 6 when being pressed down in the glass cylinder 1;
4 micro cameras 5 are symmetrically arranged on the wooden frame 4, so that the change conditions of water and soil on the surface of the soil body 12 below the semi-cylinder on the bottom surface of the glass cylinder 1 in the whole electroosmosis process can be observed and recorded;
the bottom of the glass cylinder 1 is symmetrically provided with strip-shaped electrode patches 8, and the electrode patches 8 are fixed at the bottom of the glass cylinder 1 through epoxy resin glue;
the concave conductive groove 9 is arranged inside the glass cylinder 1 and is connected with the electrode patch 8 through a wire, and a small round hole is formed in the glass cylinder 1 at the connecting line, so that the wire can pass through the small round hole conveniently; through setting up the inside between the electrically conductive groove of concave type 9 and glass section of thick bamboo 1 and walk the line, avoid electrode paster 8 to walk the line from the soil, reduced the disturbance to soil body 12, soil body system appearance is also more convenient simultaneously.
The utility model discloses the principle and the implementation mode of the utility model are explained by applying the concrete embodiment, and the explanation of the above embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be changes in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (3)
1. A measuring device for comparing electroosmosis viscosity-reducing effect under local discontinuous state of soil is characterized in that the device consists of a glass cylinder (1), a hanging ring (2), a limiting block (3), a wood frame (4), a micro camera (5), a wiring wood plug (6), a hanging strip (7), an electrode patch (8), a concave conductive groove (9), a power line (10), a conductive plug (11), soil body (12), a soil box (13), a power supply (14), an electrode plate (15) and a tension meter (16);
4 hanging holes are symmetrically formed in the upper portion of the glass cylinder (1) 2cm away from the top end, 4 wiring wooden plugs (6) are inserted into the hanging holes, and the hanging rings (2) are connected with the wiring wooden plugs (6) through high-temperature-resistant hanging strips (7); the glass cylinder (1) is made of transparent glass, so that the micro camera (5) can conveniently observe the change condition of the soil body (12) under the electroosmosis action through the glass cylinder (1);
the limiting block (3) is fixed in the middle of the glass cylinder (1) by epoxy resin glue, and is 6cm away from the top end;
a central round hole is reserved in the center of the wooden frame (4), so that conductive plugs (11) at two ends of the electrified wire (10) can be conveniently connected with the concave conductive groove (9) and the negative electrode of the power supply (14); meanwhile, four gaps are reserved on the wooden frame (4), so that the wooden frame (4) is prevented from touching the wiring wooden plug (6) when being pressed down in the glass cylinder (1);
4 micro cameras (5) are symmetrically arranged on the wooden frame (4), so that the change conditions of water and soil on the surface of a soil body (12) below a semi-cylinder on the bottom surface of the glass cylinder (1) in the whole electroosmosis process can be observed and recorded;
the bottom of the glass cylinder (1) is symmetrically provided with strip-shaped electrode patches (8), and the electrode patches (8) are fixed at the bottom of the glass cylinder (1) through epoxy resin glue;
the concave conductive groove (9) is arranged inside the glass cylinder (1) and is connected with the electrode patch (8) through a wire, and a small round hole is formed in the glass cylinder (1) at the connecting line, so that the wire can pass through the small round hole conveniently; by arranging the internal wiring between the concave conductive groove (9) and the glass cylinder (1), the electrode patch (8) is prevented from wiring from the soil, the disturbance to the soil body (12) is reduced, and the soil body sample preparation is more convenient;
2. the device according to claim 1, characterized in that the conductive plug (11) at one end of the live wire (10) can select one of the positions of the concave conductive groove (9) as a connection, which facilitates direct measurement of the electro-osmotic detackification of the electrode patch (8) at different positions.
3. The device according to claim 1, characterized in that, because the bottom of the glass cylinder (1) has local discontinuous spaces in the soil body (12), the electrode patches (8) are symmetrically arranged at the bottom of the glass curved surface, so that the influence of the local discontinuous spaces on the electroosmotic viscosity reducing effect of the soil body is conveniently researched.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921701030.XU CN211697524U (en) | 2019-10-10 | 2019-10-10 | A survey device that is used for contrast electroosmosis viscosity-reducing effect under local discontinuous state of soil body |
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| CN201921701030.XU CN211697524U (en) | 2019-10-10 | 2019-10-10 | A survey device that is used for contrast electroosmosis viscosity-reducing effect under local discontinuous state of soil body |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596110A (en) * | 2019-10-10 | 2019-12-20 | 南京林业大学 | Measuring device and testing method for comparing electroosmosis viscosity reduction effect under local discontinuous state of soil body |
| CN114397337A (en) * | 2022-01-29 | 2022-04-26 | 江苏徐工工程机械研究院有限公司 | Soil adhesion force testing device and method |
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2019
- 2019-10-10 CN CN201921701030.XU patent/CN211697524U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596110A (en) * | 2019-10-10 | 2019-12-20 | 南京林业大学 | Measuring device and testing method for comparing electroosmosis viscosity reduction effect under local discontinuous state of soil body |
| CN110596110B (en) * | 2019-10-10 | 2023-09-22 | 南京林业大学 | Measuring device and testing method for comparing electroosmosis viscosity reduction effect under local discontinuous state of soil body |
| CN114397337A (en) * | 2022-01-29 | 2022-04-26 | 江苏徐工工程机械研究院有限公司 | Soil adhesion force testing device and method |
| CN114397337B (en) * | 2022-01-29 | 2023-11-07 | 江苏徐工工程机械研究院有限公司 | Soil adhesion testing device and method |
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