CN112362501A - Seepage-proofing structure and stress seepage coupling shear box with same - Google Patents
Seepage-proofing structure and stress seepage coupling shear box with same Download PDFInfo
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- CN112362501A CN112362501A CN202011298308.0A CN202011298308A CN112362501A CN 112362501 A CN112362501 A CN 112362501A CN 202011298308 A CN202011298308 A CN 202011298308A CN 112362501 A CN112362501 A CN 112362501A
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- China
- Prior art keywords
- seepage
- hole
- test piece
- rock test
- inlet pipe
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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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
- F16L55/132—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
- F16L55/134—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing by means of an inflatable packing
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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
- G01N3/02—Details
-
- 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
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- 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
- G01N2203/0025—Shearing
-
- 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
- G01N2203/022—Environment of the test
- G01N2203/0236—Other environments
- G01N2203/0242—With circulation of a fluid
Abstract
The invention discloses an anti-seepage structure and a stress seepage coupling shearing box with the anti-seepage structure, and relates to the technical field of anti-seepage structures in shearing boxes. The joint rod, the capsule and the rock test piece are quickly assembled, so that the time required by the solidification of waterproof glue in the prior art is saved, and errors caused by the uneven manual coating of the waterproof glue are eliminated; the connector rod and the bag body are not disposable articles and can be repeatedly used; the utricule is an active sealing member, and internal pressure can carry out according to the experiment demand and adjust, has improved the rationality of experimental efficiency and experimental result.
Description
Technical Field
The invention relates to the technical field of an anti-seepage structure in a shearing box, in particular to an anti-seepage structure and a stress seepage coupling shearing box with the anti-seepage structure.
Background
In order to research the influence of water seepage on the shear rheological property of a test piece, an indoor shear rheological experiment under the stress seepage coupling effect needs to be carried out on the test piece; in the process of carrying out a stress seepage coupling shear test on a test piece, high water pressure needs to be applied inside the test piece, and the high water pressure can cause water to overflow along a gap between the inner wall of a seepage hole of the test piece and the outer wall of a joint of the rock test piece, so that an experimental result is influenced, and an overflow path for overflowing the water in the seepage hole of the test piece needs to be blocked. The existing plugging mode is that a layer of waterproof glue is coated on the outer wall of a test piece joint, then the test piece joint is placed into a seepage hole of a test piece, standing is carried out for a period of time, and an experiment can be carried out after the waterproof glue is solidified. This kind of processing mode can play certain waterproof effect, but under the condition of artificial error and long-term high osmotic water pressure effect, still there is water to get into outside test piece seepage hole inner wall and the rock test piece joint, overflows the test piece surface even, and water-proof effects can not obtain guaranteeing, influences the experimental result.
Disclosure of Invention
The invention aims to provide an anti-seepage structure and a stress seepage coupling shearing box with the anti-seepage structure, which are used for solving the problems in the prior art and improving the anti-seepage effect of a stress seepage coupling shearing test and the reasonability of an experimental result.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a stress seepage coupling shearing box with an anti-seepage structure, which comprises a cushion block and a capsule body, wherein two pipelines which are mutually communicated are arranged in the cushion block, the upper end of one pipeline is communicated with a water inlet pipe of a pressure head, the lower end of the other pipeline is communicated with a joint rod which is sleeved in a rock test piece, the other pipeline is provided with a valve body and is communicated with the capsule body, the capsule body is of a hollow cylindrical elastic structure, and the capsule body is sleeved in holes of the joint rod and the rock test piece.
Preferably, two pipelines in the cushion block are respectively a seepage pipe and a sac body pressure charging pipe, the seepage pipe is arranged in a collinear way with the water inlet pipe and the channel of the joint rod, the sac body pressure charging pipe is in an inverted L shape, and the lower end of the sac body pressure charging pipe is communicated with the sac body.
Preferably, the valve body is a one-way valve.
Preferably, an inlet pipe is arranged at the upper end of the bag body, the inlet pipe is connected to the one-way valve through a connector, and a notch for allowing the inlet pipe to pass through is formed in the protruding end of the connector rod.
Preferably, the depth of the bag body is the same as that of the anti-seepage hole, the inlet pipe is attached to the upper surface of the rock test piece, and a groove used for allowing the inlet pipe to pass through and matched with the protruding end of the joint rod is formed in the lower end face of the cushion block.
Preferably, the bladder can be filled with a gas or liquid at different pressures.
The invention also relates to a stress seepage coupling shear box with an anti-seepage structure, which comprises the anti-seepage structure, an upper shear box, a lower shear box, a rock test piece, a pressure head and a joint rod, the middle part of the lower shearing box is provided with a cavity for containing the rock test piece, the rock test piece is provided with a hole for containing the joint rod, the upper shearing box is of a hollow structure, the rock test piece, the joint rod, the anti-seepage structure and the pressure head which are matched with each other are sequentially arranged in the upper shearing box in a penetrating way, a drainage pipeline is arranged on the contact surface of the upper shearing box and the lower shearing box, the bottom surface of a hole in the rock test piece is flush with the lower end surface of the upper shearing box, be provided with the intercommunication in the pressure head the inlet tube of seepage prevention structure pipeline, the pressure head top is used for applying normal load, the lateral wall of lower shear box is used for applying shear load.
Preferably, the hole on the rock test piece includes the impervious hole and the seepage hole of concentric connection, the seepage hole is located the lower extreme in impervious hole, just the diameter in seepage hole with the lower extreme external diameter phase-match of joint pole, the joint pole with set up between the seepage hole the utricule of seepage prevention structure.
Preferably, sealing rings are arranged between the bag body and the bottom surface of the seepage hole and between the protruding end of the joint rod and the groove in the gasket of the seepage-proofing structure.
Preferably, the outer diameter of the joint rod and the diameter of the seepage hole are both 4mm, the depth of the seepage hole is 2.5mm, and the inner diameter of the seepage-proof hole is 8mm and the depth is 35 mm.
Compared with the prior art, the invention has the following technical effects:
the joint rod, the capsule and the rock test piece are quickly assembled, so that the time required by the solidification of waterproof glue in the prior art is saved, and errors caused by the uneven manual coating of the waterproof glue are eliminated; the connector rod and the bag body are not disposable articles and can be repeatedly used; the utricule is an active sealing member, and internal pressure can carry out according to the experiment demand and adjust, has improved the rationality of experimental efficiency and experimental result.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a stress seepage coupling shear box with an anti-seepage structure according to the present invention;
FIG. 2 is a schematic structural view of the belt barrier of the present invention;
FIG. 3 is a schematic view of the construction of a joint lever according to the present invention;
FIG. 4 is a schematic structural view of a rock test piece according to the present invention;
wherein: 1-joint rod, 2-groove, 3-inlet pipe, 4-capsule, 5-sealing ring, 6-one-way valve, 7-lower shear box, 8-rock test piece, 9-upper shear box, 10-cushion block, 11-pressure head, 12-inlet pipe, 13-seepage pipe, 14-capsule pressurizing pipe, 15-drainage pipeline, 16-anti-seepage hole and 17-seepage hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to provide an anti-seepage structure and a stress seepage coupling shearing box with the anti-seepage structure, which are used for solving the problems in the prior art and improving the anti-seepage effect of a stress seepage coupling shearing test and the reasonability of an experimental result.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 4: the embodiment provides a take stress seepage flow coupling shear box of seepage prevention structure, including cushion 10 and utricule 4, be provided with two pipelines of mutual intercommunication in the cushion 10, the joint pole 1 in rock test piece 8 is located to inlet tube 12, the lower extreme intercommunication cover of a pipeline upper end intercommunication pressure head 11, another pipeline is equipped with the valve body and communicates utricule 4, utricule 4 is the elastic construction of cavity tube-shape, and utricule 4 cover is located in the hole of joint pole 1 and rock test piece 8.
Two pipelines in the cushion block 10 are respectively a seepage pipe 13 and a capsule body pressure increasing pipe 14, the seepage pipe 13 is respectively arranged with the water inlet pipe 12 and the channel of the joint rod 1 in a collinear way, the capsule body pressure increasing pipe 14 is in an inverted L shape, and the lower end of the capsule body pressure increasing pipe 14 is communicated with the capsule body 4. The valve body is a one-way valve 6, which can effectively ensure that the pressure in the capsule body 4 is not lost. An inlet pipe 3 is arranged at the upper end of the bag body 4, and the inlet pipe 3 is connected to a one-way valve 6 through a joint. Be provided with the breach that is used for passing through import pipe 3 on the protruding end of joint pole 1, the degree of depth and the depth in anti-seepage hole 16 of utricule 4 are the same, and import pipe 3 pastes in the upper surface of rock test piece 8, and the lower terminal surface of cushion 10 is provided with the recess 2 that is used for passing through import pipe 3 and matches with the protruding end of joint pole 1, reduces the destruction to the test piece, is convenient for again apply normal load. Can fill the gas or the liquid of different pressure in the utricule 4, can carry out according to the experiment demand and adjust, improve the rationality of experimental efficiency and experimental result.
The embodiment also relates to a stress seepage coupling shear box with an anti-seepage structure, which comprises the anti-seepage structure, an upper shear box 9, a lower shear box 7, a rock test piece 8, a pressure head 11 and a joint rod 1, wherein a cavity for accommodating the rock test piece 8 is arranged in the middle of the lower shear box 7, a hole for accommodating the joint rod 1 is arranged on the rock test piece 8, the upper shear box 9 is of a hollow structure, the rock test piece 8, the joint rod 1, the anti-seepage structure and the pressure head 11 which are matched with each other are sequentially arranged in the upper shear box 9 in a penetrating manner, a water drainage pipeline 15 is arranged on the contact surface of the upper shear box 9 and the lower shear box 7, the device is used for discharging water in the experimental process, the bottom surface of a hole in the rock test piece 8 is flush with the lower end surface of the upper shearing box 9, a water inlet pipe 12 communicated with an anti-seepage structure pipeline is arranged in the pressure head 11, the top of the pressure head 11 is used for applying normal load, and the side wall of the lower shearing box 9 is used for applying shearing load.
The hole on the rock test piece 8 comprises an anti-seepage hole 16 and a seepage hole 17 which are concentrically connected, the seepage hole 17 is positioned at the lower end of the anti-seepage hole 16, the diameter of the seepage hole 17 is matched with the outer diameter of the lower end of the joint rod 1, and a bag body 4 with an anti-seepage structure is arranged between the joint rod 1 and the seepage hole 17 to form a soft body pressurizable sealing element. Sealing rings 5 are arranged between the bag body 4 and the bottom surface of the seepage hole 17 and between the protruding end of the joint rod 1 and the groove 2 in the cushion block 10 of the seepage-proofing structure, so that the sealing performance between pipelines is guaranteed, and water seepage is avoided; because the sealing ring 5 at the bottom of the capsule 4 can ensure that the capsule 4 can be expanded and can not enter the seepage holes 17, and simultaneously, the water in the seepage holes 17 can not overflow. The outer diameter of the joint rod 1 and the diameter of the seepage hole 17 are both 4mm, the depth of the seepage hole 17 is 2.5mm, and the inner diameter of the seepage-proof hole 16 is 8mm and the depth is 35 mm.
The rock test piece 8 of the embodiment is a standard rectangular test piece with the height of 150mm and the length and width of 75 mm; the red sandstone is adopted. And drilling a seepage-proof hole 16 in the center of the top of the rock test piece 8, drilling a seepage hole 17 which is concentrically arranged at the bottom of the cylindrical hole after the drilling is finished, and cleaning the hole.
In use, the embodiment is assembled with the stress seepage coupling shear box having the seepage-proofing structure, and the upper shear box 9 is sealed with the lower shear box 7. During the experiment, normal load is applied firstly, after the rock test piece 8 deforms and stabilizes, water with the pressure of 3-20MPa is injected into the water inlet pipe 12 in the pressure head 11, the water pressure is greater than the maximum osmotic water pressure required by the experiment, pressurization is stopped after the water pressure stabilizes, and at the moment, the water pressure of the capsule body 4 is once as high as 3-20MPa due to the action of the one-way valve 6; because the bag body 4 has elasticity, the bag body 4 expands under the action of water pressure, so that the bag body 4 is tightly attached to the outer wall of the joint rod 1 and the inner wall of the seepage-proofing hole 16, all gaps 19 are sealed, and the water pressure is stopped. After all parts are sealed, water with the pressure of 2MPa is injected into the water inlet pipe 12 in the pressure head 11, the pressure is the osmotic water pressure required by the experiment, and the seepage holes 17 are filled with the water. After standing for 3-5 days, applying a transverse shear load to the lower shear box 7 in a grading manner until the test sample is destroyed to test the mechanical property of the rock test piece 8; and (5) dismantling the devices after the experiment is finished, and cleaning the shearing box.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. An impermeable structure, characterized in that: including cushion and utricule, be provided with two pipelines of mutual intercommunication in the cushion, one the joint pole in the rock test piece is located to inlet tube, the lower extreme intercommunication cover of pipeline upper end intercommunication pressure head, another the pipeline is equipped with valve body and intercommunication the utricule, the utricule is the elastic construction of cavity tube-shape, the utricule cover is located the joint pole with the downthehole of rock test piece.
2. The belt barrier according to claim 1, characterized in that: two pipelines in the cushion block are respectively a seepage pipe and a sac body pressure charging pipe, the seepage pipe is respectively arranged with the water inlet pipe and the channel of the joint rod in a collinear way, the sac body pressure charging pipe is in an inverted L shape, and the lower end of the sac body pressure charging pipe is communicated with the sac body.
3. The belt barrier according to claim 1, characterized in that: the valve body is a one-way valve.
4. The belt barrier according to claim 3, wherein: the upper end of the bag body is provided with an inlet pipe, the inlet pipe is connected to the one-way valve through a connector, and a notch for the inlet pipe to pass through is formed in the protruding end of the connector rod.
5. The belt barrier according to claim 4, wherein: the depth of the bag body is the same as that of the anti-seepage hole, the inlet pipe is attached to the upper surface of the rock test piece, and a groove used for allowing the inlet pipe to pass through and matched with the protruding end of the joint rod is formed in the lower end face of the cushion block.
6. The belt barrier according to claim 1, characterized in that: the capsule can be filled with gas or liquid at different pressures.
7. The utility model provides a take stress seepage flow coupling shear box of seepage prevention structure which characterized in that: the anti-seepage structure comprises the anti-seepage structure, an upper shearing box, a lower shearing box, a rock test piece, a pressure head and a joint rod, wherein a cavity for containing the rock test piece is arranged in the middle of the lower shearing box, a hole for containing the joint rod is formed in the rock test piece, the upper shearing box is of a hollow structure, the rock test piece, the joint rod, the anti-seepage structure and the pressure head which are matched with each other are sequentially arranged in the upper shearing box in a penetrating mode, a water drainage pipeline is arranged on the contact surface of the upper shearing box and the lower shearing box, the bottom surface of the hole in the rock test piece is flush with the lower end surface of the upper shearing box, a water inlet pipe communicated with the anti-seepage structure pipeline is arranged in the pressure head, the top of the pressure head is used for applying a normal load, and the side wall of the lower shearing box is used for applying.
8. The stress-seepage coupling shear box with an impermeable structure of claim 7, wherein: the hole on the rock test piece includes the antiseep hole and the seepage hole of concentric connection, the seepage hole is located the lower extreme in antiseep hole, just the diameter in seepage hole with the lower extreme external diameter phase-match of joint pole, the joint pole with set up between the seepage hole the utricule of seepage prevention structure.
9. The stress-seepage coupling shear box with an impermeable structure of claim 7, wherein: and sealing rings are arranged between the bag body and the bottom surface of the seepage hole and between the protruding end of the joint rod and the groove in the gasket of the seepage-proofing structure.
10. The stress-seepage coupling shear box with an impermeable structure of claim 7, wherein: the external diameter of joint pole with the diameter in infiltration hole is 4mm, the degree of depth in infiltration hole is 2.5mm, the internal diameter in prevention of seepage hole is 8mm, the degree of depth is 35 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011298308.0A CN112362501A (en) | 2020-11-19 | 2020-11-19 | Seepage-proofing structure and stress seepage coupling shear box with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011298308.0A CN112362501A (en) | 2020-11-19 | 2020-11-19 | Seepage-proofing structure and stress seepage coupling shear box with same |
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| Publication Number | Publication Date |
|---|---|
| CN112362501A true CN112362501A (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011298308.0A Pending CN112362501A (en) | 2020-11-19 | 2020-11-19 | Seepage-proofing structure and stress seepage coupling shear box with same |
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| CN (1) | CN112362501A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466059A (en) * | 2021-06-18 | 2021-10-01 | 武汉科技大学 | Seepage-proofing device, shearing box and use method of seepage-proofing device |
-
2020
- 2020-11-19 CN CN202011298308.0A patent/CN112362501A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466059A (en) * | 2021-06-18 | 2021-10-01 | 武汉科技大学 | Seepage-proofing device, shearing box and use method of seepage-proofing device |
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