CN106990029A - A kind of flexible boundary rock fracture compression shear seepage coupling experiment box - Google Patents
A kind of flexible boundary rock fracture compression shear seepage coupling experiment box Download PDFInfo
- Publication number
- CN106990029A CN106990029A CN201610036260.3A CN201610036260A CN106990029A CN 106990029 A CN106990029 A CN 106990029A CN 201610036260 A CN201610036260 A CN 201610036260A CN 106990029 A CN106990029 A CN 106990029A
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- China
- Prior art keywords
- increased pressure
- pressure board
- compression shear
- downside
- upside
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- 230000006835 compression Effects 0.000 title claims abstract description 24
- 238000007906 compression Methods 0.000 title claims abstract description 24
- 239000011435 rock Substances 0.000 title claims abstract description 19
- 238000002474 experimental method Methods 0.000 title claims abstract description 15
- 230000008878 coupling Effects 0.000 title claims abstract description 10
- 238000010168 coupling process Methods 0.000 title claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 10
- 238000012360 testing method Methods 0.000 claims abstract description 24
- 125000006850 spacer group Chemical group 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 8
- 238000010008 shearing Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000012780 transparent material Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention discloses a kind of flexible boundary rock fracture compression shear seepage coupling experiment box, belongs to rock fracture compression shear Seepage Experiment equipment, including external frame and internal compression shear system；It is the rubber spacer for including middle cavity in the middle part of test box；The discontinuous rigid pressurized plate in side can carry out entirety or pressurized to test specimen；Upside increased pressure board provides the pressurization of vertical direction with downside increased pressure board collective effect；The current that intake-outlet can be provided with certain pressure head carry out seepage tests；The device can be used for study of rocks extruding and shearing the seepage characteristic under collective effect.
Description
Technical field
This patent is related to a kind of rock fracture compression shear Seepage Experiment equipment, more particularly to a kind of flexible boundary rock fracture compression shear seepage coupling experiment box.
Background technology
With in Geotechnical Engineering, structural plane in rock mass has important influence to the physico-mechanical properties of rock mass with underground water.The presence of one side structural plane causes rock mass to turn into discontinuum, and corresponding change also occurs for mechanical property；Another aspect underground water can change stress and the deformation of rock mass.Therefore seepage flow of the Study of The Underground water in crack is extremely necessary in Geotechnical Engineering.And rock mass is under natural surroundings, rock is more complicated by the power of all directions, and the experiment for carrying out artificial joint just seems simple and easy to apply, and the indoor compression shear seepage coupling test of wherein rock joint is a kind of highly effective method for studying fracture seepage.
During the compression shear of rock joint, when two joint planes are producing certain displacement under cutting pressure effect, by setting certain head difference in compression shear box water inlet and delivery port, that is seepage water pressure, flowed the water realized in rock joint along specified path, to ensure that compression shear box surrounding is water-tight simultaneously, it is therefore desirable to make compression shear box that there is good sealed nature.But the test box sealing effectiveness that presently, there are is all undesirable, so needing a kind of preferable leakage test box to complete correlation test.
The content of the invention
To solve the above problems, this patent discloses a kind of flexible boundary rock fracture compression shear seepage coupling experiment box, it is ensured that during compression-shear test, when test specimen produces corresponding displacement, realize that current still flow along specified path and ensure good sealing, solve seepy question.
A kind of flexible boundary rock fracture compression shear seepage coupling experiment box, including the inside compression shear system and external frame that the rubber spacer comprising middle cavity, discontinuous rigid pressurized plate, adjustable nut, water inlet, lateral baffle plate, upside increased pressure board, downside increased pressure board, delivery port, upper side shield, lower side shield are constituted；Described rubber spacer, the left and right sides sets discontinuous rigid pressurized plate, and both sides set upside increased pressure board and downside increased pressure board up and down；Having on described upside increased pressure board has delivery port on water inlet, downside increased pressure board；Described discontinuous rigid pressurized plate, it is characterised in that be made using transparent material；The discontinuous rigid pressurized plate, its characteristic is that extruding to test specimen, shearing, compression shear collective effect can be realized respectively by different pressurization combinations；Described upside increased pressure board, downside increased pressure board, it is characterised in that be made using transparent material；Described upper side shield, lower side shield, it is characterised in that be made using transparent material, and it is reserved with the aperture passed through for load bar.
When being tested, because specimen prefabricated crack has certain angle, in pressure process, the power of vertical direction and horizontal direction can be produced simultaneously, and then test specimen is produced corresponding displacement.Due to the generation of lateral displacement, make test specimen more compacted with rubber spacer, water-stagnating effect enhancing, while discontinuous rigid pressurized plate also applies certain pressure prevents rubber spacer because gap deformation is excessive and water leakage situation occurs.Upside increased pressure board, downside increased pressure board play fixed test specimen and prevent the excessive effect of vertical displacement.
The beneficial effect of the design is：When carrying out compression shear seepage coupling test, the sealing of test box can be fully ensured that, leak is prevented.The size of shear stress and compression can be controlled by adjusting the crack angle of test specimen simultaneously, the coupled shear-flow test under different confined pressures can also be carried out.
Brief description of the drawings
The invention will be further described with embodiment below in conjunction with the accompanying drawings：
Accompanying drawing 1 is the structural representation of compression-shear test box described in the design.
Accompanying drawing 2 is the top view and rubber spacer distribution situation of the design.
Reference is as follows：Side shield under increased pressure board on the downside of increased pressure board on the upside of 1- test specimens, 2- rubber spacers, the discontinuous lateral rigidity increased pressure boards of 3-, 4- adjustable nuts, 5- external frames, 6- water inlets, 7-, 8-, 9- delivery ports, the lateral baffle plates of 10-, the upper side shields of 11-, 12-.
Embodiment
During experiment, needed to adjust test box size according to experiment first, then need to process with certain test specimen for tilting crack according to experiment, then test specimen is placed in cavity in middle part, clamped by flexible rubber bed course, lateral increased pressure board is pressurizeed as needed simultaneously, and rubber spacer produces certain elastic deformation during pressurization so that sealing strengthens.Start after surrounding holding is closed in vertical pressurization, pressure process, not compacted gap is compacted with stress increase, and sealing is further strengthened, and reaches effective sealing effectiveness, prevents leak.Lateral discontinuous rigid pressurized plate can carry out entire pressurisation and also carry out pressurized, the leak that pressurized can avoid rubber spacer inhomogeneous deformation caused by entire pressurisation and produce.Also can be according to experiment demand, multiple single increased pressure boards pressurize simultaneously carries out lateral entire pressurisation, and discontinuous rigid pressurized plate can realize extruding to test specimen, shearing, compression shear collective effect respectively by different pressurization combinations.Because various lateral baffle plates and increased pressure board are made by transparent material, pressurized condition can be directly observed, corresponding displacement and pressure change can also be calculated by the thickness change of rubber spacer.
Sealing situation reaches can be intake after requirement by corresponding water feed apparatus from water inlet, carry out Seepage Experiment.Because perimetric hermetic is preferable, the liquid with relevant pressure head and kinetic head can be born to enter, corresponding water yield is can detect in delivery port, pass through the seepage discharge in the unit of account time, with reference to corresponding compression shear power size, the corresponding research of compression shear seepage flow coupling can be carried out.
One kind of embodiment described above, simply more preferably specific embodiment of the invention, the usual variations and alternatives that those skilled in the art is carried out in the range of the technical program all should be comprising within the scope of the present invention.
Claims (7)
1. a kind of flexible boundary rock fracture compression shear seepage coupling experiment box, including the inside compression shear system and external frame that the rubber spacer comprising middle cavity, discontinuous rigid pressurized plate, adjustable nut, water inlet, lateral baffle plate, upside increased pressure board, downside increased pressure board, delivery port, upper side shield, lower side shield are constituted.
2. rubber spacer as claimed in claim 1, the left and right sides sets discontinuous rigid pressurized plate, both sides set upside increased pressure board and downside increased pressure board up and down.
3. having on upside increased pressure board as claimed in claim 1 has delivery port on water inlet, downside increased pressure board.
4. discontinuous rigid pressurized plate as claimed in claim 1, it is characterised in that be made using transparent material.
5. rigid pressurized plate as claimed in claim 1 discontinuous, its characteristic is that extruding to test specimen, shearing, compression shear collective effect can be realized respectively by different pressurization combinations.
6. upside increased pressure board as claimed in claim 1, downside increased pressure board, it is characterised in that be made using transparent material.
7. upper side shield, lower side shield as claimed in claim 1, it is characterised in that be made using transparent material, and be reserved with the aperture passed through for load bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036260.3A CN106990029A (en) | 2016-01-20 | 2016-01-20 | A kind of flexible boundary rock fracture compression shear seepage coupling experiment box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036260.3A CN106990029A (en) | 2016-01-20 | 2016-01-20 | A kind of flexible boundary rock fracture compression shear seepage coupling experiment box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106990029A true CN106990029A (en) | 2017-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610036260.3A Pending CN106990029A (en) | 2016-01-20 | 2016-01-20 | A kind of flexible boundary rock fracture compression shear seepage coupling experiment box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106990029A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834324A (en) * | 2021-01-11 | 2021-05-25 | 武汉科技大学 | Portable tension-compression-shear stress applying device |
-
2016
- 2016-01-20 CN CN201610036260.3A patent/CN106990029A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834324A (en) * | 2021-01-11 | 2021-05-25 | 武汉科技大学 | Portable tension-compression-shear stress applying device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170728 |
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| WD01 | Invention patent application deemed withdrawn after publication |