CN106990220A - The rock fracture compression shear seepage coupling test device and its application process of flexible boundary - Google Patents
The rock fracture compression shear seepage coupling test device and its application process of flexible boundary Download PDFInfo
- Publication number
- CN106990220A CN106990220A CN201610034903.0A CN201610034903A CN106990220A CN 106990220 A CN106990220 A CN 106990220A CN 201610034903 A CN201610034903 A CN 201610034903A CN 106990220 A CN106990220 A CN 106990220A
- Authority
- CN
- China
- Prior art keywords
- test
- test specimen
- increased pressure
- compression shear
- pressure board
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Analytical Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (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 invention discloses the rock fracture compression shear seepage coupling test device and its application process of a kind of flexible boundary, including flexible boundary, rock fracture compression shear seepage coupling experiment box, test box application process and test specimen preparation method etc., belong to Geotechnical Engineering field of experiment equipment；Test box mainly includes external frame and internal compression shear structure；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 can apply the pressure of vertical direction with downside increased pressure board collective effect；By applying pressure differential head in water inlet and delivery port come the fluid neuron network in realizing pressure to subtract seepage coupling test；The device can be used for research jointed rock mass compression shear destructive characteristics and stress seepage flow coupling property.
Description
Technical field
This patent is related to experimental facilities and its application process under a kind of complex stress condition, more particularly to a kind of difference is enclosed
The lower rock fracture compression shear seepage coupling test device of pressure effect and its application process.
Background technology
Structural plane in rock mass has important influence to the physico-mechanical properties of rock mass with underground water.One side structural plane
Presence cause rock mass to turn into discontinuum, corresponding change also occurs for mechanical property, while being risen to seepage action of ground water decisive
Effect；Another aspect underground water can change stress and the deformation of rock mass.Therefore in Geotechnical Engineering Study of The Underground water in crack
In seepage flow be extremely necessary.And rock mass is under natural surroundings, the power by each side is more complicated, carries out the examination at artificial joint
Test and just seem simple and easy to apply, the indoor compression shear seepage coupling test of wherein rock joint is that the one kind for studying fracture seepage extremely has
The method of effect.
During the compression shear of rock joint, when two joint planes are producing certain displacement under cutting pressure effect, pass through
Certain head difference, i.e. seepage water pressure are set in compression shear seepage tests box water inlet and delivery port, to make in rock joint
Water flows along specified path, while wanting guarantee test box surrounding water-tight.Therefore need to make test box that there is good sealing
Property.But the test box sealing effectiveness that presently, there are is all undesirable, so needing a kind of preferable leakage test box to complete phase
Experiment is closed, while needing a kind of corresponding application process and test specimen preparation method.
The content of the invention
To solve the above problems, this patent disclose a kind of flexible boundary rock fracture compression shear seepage coupling test device and
Its application process, it is ensured that during rock fracture compression shear seepage coupling test, when test specimen is produced after corresponding displacement, is realized
Current still flow along specified path and ensure good sealing, effectively solve seepy question.
A kind of rock fracture compression shear seepage coupling test device of flexible boundary, including 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, upside
Inside compression shear system and external frame that baffle plate, lower side shield are constituted；Described rubber spacer, the left and right sides sets discontinuous
Rigid pressurized plate, up and down both sides upside increased pressure board and downside increased pressure board are set；There is water inlet on described upside increased pressure board, under
There is delivery port on the increased pressure board of side；Described discontinuous rigid pressurized plate, it is characterised in that be made using transparent material；It is described not
Continuous rigid pressurized plate, its characteristic be can by different pressurization combinations, realize respectively extruding to test specimen, shearing,
Compression shear collective effect；Described upside increased pressure board, downside increased pressure board, it is characterised in that be made using transparent material；Described is 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.
Test specimen is prepared using rigid cast iron die, is made up of peripheral cast iron die with interior metal piece.First used when using
Cast iron die pours test specimen.As shown in figure 4, limit Mohr's stress circle and coulomb criterion straight line are existed simultaneouslyIn plane
Make, then circle must be tangent with coulomb criterion straight line.The maximum angle between shear surface and coupon level axis can be tried to achieve by figure, can not then be sheared more than after this extreme angles.So should be controlled when pouring test specimen
Angle between interior metal piece and coupon level axisIt is less than（WhereinFor the interior friction used for pouring material
Angle）, otherwise will not shear.The sheet metal is used to control the angle between prefabricated shear surface and die boundary, if only
Carry out squeeze test, then without using.
After the intensity required Deng test piece maintenance to Pass Test, the test specimen being made using cast iron die is placed on test box
Middle cavity, then adjusting peripheral rubber bed course is used to clamp test specimen, while adjusting test specimen, makes test specimen and flexible cushion holding close
Close.Adjustment Tests box size, it may be necessary to change rubber spacer to meet requirement of experiment.Then test box is opened, be put into
Test specimen, will keep clamping during being put into, test specimen is fully contacted with flexible boundary, prevent the appearance in space, flexible rubber pad
Layer is clamped.It is after regulation is preferable that the compression shear seepage coupling experiment box integral installation of flexible boundary rock fracture is enterprising to shearing seepage flow machine
Row experiment.
Because specimen prefabricated shear surface has certain angle, in pressure process, vertical direction and water can be produced simultaneously
Square to power, and then test specimen is produced corresponding displacement.Upside increased pressure board, downside increased pressure board play fixed test specimen and prevent from erecting
The excessive effect of straight displacement.Lateral increased pressure board is pressurizeed as needed, and rubber spacer produces certain bullet during pressurization
Property deformation so that sealing is further enhanced.Start after surrounding holding is closed in vertical pressurization, pressure process, not compacted gap
Compacted with stress increase, sealing is further strengthened, and reaches effective sealing effectiveness, prevents leak.
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
Property, prevent leak.The size of shear stress and compression can be controlled by adjusting the shearing inclination of test specimen simultaneously, can also entered
Coupled shear-flow test under the different confined pressures of row.
Brief description of the drawings
This patent is described further with embodiment below in conjunction with the accompanying drawings：
Accompanying drawing 1 is the structural representation of the rock fracture compression shear seepage coupling test device of flexible boundary described in the design.
Accompanying drawing 2 is the top view and rubber spacer distribution situation of test box.
The mould schematic diagram of the test specimen for needed for preparing experiment of accompanying drawing 3.
Accompanying drawing 4 is limit stress circle and coulomb criterion linear relation schematic diagram.
Accompanying drawing 5 is the relation schematic diagram of greatest shear plane and coupon level axis.
The following 1- test specimens of reference, 2- includes the rubber spacer of middle cavity, and the discontinuous rigid pressurized plates of 3-, 4- reinforces spiral shell
On increased pressure board on the downside of increased pressure board on the upside of mother, 5- external frames, 6- water inlets, 7-, 8-, 9- delivery ports, the lateral baffle plates of 10-, 11-
Side shield under side shield, 12-, 13- sheet metals, 14- cast iron dies.
Embodiment
When using the test box, need, first according to test requirements document, to make test specimen.Prepare the ferrosteel used during test specimen
Mould, is made up of peripheral cast iron die with interior metal piece.First cylinder iron mould pours test specimen when using.If carrying out shearing examination
Test or compression-shear test, when pouring test specimen the angle between interior metal piece and coupon level axis should be controlled to should be less than（WhereinFor the internal friction angle used for pouring material）, otherwise will not shear.If only carrying out squeeze test
When, then it is not required to prefabricated inclination angle.Then wait after the intensity that test piece maintenance is required to Pass Test, Adjustment Tests box size, if necessary
Rubber spacer can be changed to meet requirement of experiment.Then test box is opened, is put into test specimen, retaining clip is wanted during being put into
Tightly, test specimen is fully contacted with flexible boundary, prevent the appearance in space, flexible rubber bed course is clamped, while lateral increased pressure board root
According to needing to be pressurizeed, rubber spacer produces certain elastic deformation during pressurization so that sealing strengthens.Surrounding is kept
Start after closed in vertical pressurization, pressure process, not compacted gap is compacted with stress increase, and sealing is further strengthened, and reaches
To effective sealing effectiveness, leak is prevented.
Lateral discontinuous rigid pressurized plate can single increased pressure board pressurization carry out pressurized, it is to avoid rubber caused by entire pressurisation
Rubber cushion layer is deformed and leak, also can simultaneously be pressurizeed according to experiment demand, multiple single increased pressure boards and be carried out lateral entire pressurisation.Due to
External baffle is made with increased pressure board by transparent material, can directly observe pressurized condition, can also be by the thickness of rubber spacer
Degree changes to calculate corresponding displacement and pressure change.
Sealing situation reaches can be intake after requirement by corresponding water feed apparatus from water inlet, carry out Seepage Experiment.By
In perimetric hermetic preferably, the liquid with relevant pressure head and kinetic head can be born to enter, it is detectable in delivery port
To corresponding water yield, by the seepage discharge in the unit of account time, with reference to corresponding compression shear power size, compression shear seepage flow can be carried out
The corresponding research of coupling.
One kind of case study on implementation described above, simply specific embodiment, those skilled in the art is in skill of the present invention
The usual variations and alternatives carried out in art aspects should be all included in the protection domain of patent of the present invention.Technical field.
Claims (14)
1. the rock fracture compression shear seepage coupling test device and its application process of flexible boundary, including flexible boundary, rock split
Gap compression shear seepage coupling experiment box, test box application process and test specimen preparation method.
2. test box as claimed in claim 1 includes the rubber spacer comprising middle cavity, discontinuous rigid pressurized plate, can adjust
It is interior that nut, water inlet, lateral baffle plate, upside increased pressure board, downside increased pressure board, delivery port, upper side shield, lower side shield are constituted
Portion's compression shear structure and external frame.
3. rubber spacer as claimed in claim 2 meets described flexible boundary, the left and right sides sets discontinuous rigid pressurized
Plate, up and down both sides upside increased pressure board and downside increased pressure board are set.
4. having on upside increased pressure board as claimed in claim 2 has delivery port on water inlet, downside increased pressure board.
5. discontinuous rigid pressurized plate as claimed in claim 2, it is characterised in that be made using transparent material.
6. discontinuous rigid pressurized plate as claimed in claim 2, its characteristic is by different pressurization combinations to divide
Extruding to test specimen, shearing, compression shear collective effect are not realized.
7. upside increased pressure board as claimed in claim 2, downside increased pressure board, it is characterised in that be made using transparent material.
8. upper side shield, lower side shield as claimed in claim 2, it is characterised in that be made, and be reserved with using transparent material
The aperture passed through for load bar.
9. test specimen preparation method as claimed in claim 1, comprising mould needed for making test specimen, mould therefor is by peripheral pig mold
Tool is made with interior metal piece.
10. test specimen as claimed in claim 9 makes mould, interior metal piece and die edge should be controlled when test specimen is poured with it
Between angle be less than, whereinFor the internal friction angle used for pouring material, mould material can choose concrete and stone
The quick-sets such as cream.
11. interior metal piece as claimed in claim 9, for controlling the angle between prefabricated shear surface and die boundary, is poured
Be placed in when building test specimen in mould, such as only carry out a squeeze test, then without using.
12. test specimen, is placed on the middle cavity of test box by test method as claimed in claim 1 during experiment, then adjust outer
Enclosing rubber spacer is used to clamp test specimen, while adjusting test specimen, test specimen is kept closed with rubber spacer.
13. after step as claimed in claim 12, adjusting nut, loosen external frame, up and down side shield adjust experiment
Box size, until each to all reaching preferable sealing effectiveness.
14. it will carry out compression shear seepage coupling test in test box integral installation to shearing seepage flow machine after regulation is preferable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610034903.0A CN106990220A (en) | 2016-01-20 | 2016-01-20 | The rock fracture compression shear seepage coupling test device and its application process of flexible boundary |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610034903.0A CN106990220A (en) | 2016-01-20 | 2016-01-20 | The rock fracture compression shear seepage coupling test device and its application process of flexible boundary |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106990220A true CN106990220A (en) | 2017-07-28 |
Family
ID=59413455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610034903.0A Pending CN106990220A (en) | 2016-01-20 | 2016-01-20 | The rock fracture compression shear seepage coupling test device and its application process of flexible boundary |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106990220A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107703280A (en) * | 2017-10-13 | 2018-02-16 | 浙江大学 | The device of malm critical friction angle and coefficient of static earth pressure in the case of a kind of measurement arbitrarily crushes |
-
2016
- 2016-01-20 CN CN201610034903.0A patent/CN106990220A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107703280A (en) * | 2017-10-13 | 2018-02-16 | 浙江大学 | The device of malm critical friction angle and coefficient of static earth pressure in the case of a kind of measurement arbitrarily crushes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106908323B (en) | A kind of rock-like materials Hydraulic fracturing test device and method | |
| CN104237021B (en) | A kind of concrete component hydraulic fracture simulated experiment method for designing applying twin shaft active force and device | |
| CN102053036B (en) | Experimental design method and device for simulating high-pressure water fracturing of concrete member in tension/compression state | |
| CN211132193U (en) | Experimental medicinal material soak device of using of traditional chinese medicine | |
| CN204278349U (en) | Visual controllable thickness test board timber die | |
| CN107727550A (en) | Apparatus and method for evaluating crack plugging effect under pressure water action | |
| CN106990220A (en) | The rock fracture compression shear seepage coupling test device and its application process of flexible boundary | |
| CN104215506A (en) | Gradient confining pressure loading method | |
| CN106948229B (en) | A kind of non-fragment orbit self-compacting concrete aluminum alloy seal edge template | |
| CN211466784U (en) | A test piece making devices for measuring do not disperse concrete compressive strength under water | |
| CN212707312U (en) | Novel prefabricated part mold | |
| CN217878578U (en) | Earthen site test block sample preparation mold capable of simulating cracks | |
| CN106990029A (en) | A kind of flexible boundary rock fracture compression shear seepage coupling experiment box | |
| CN204116119U (en) | Make the filler equipment of vibro-hydro pressed concrete cubic compressive strength standard component | |
| CN207794616U (en) | A kind of building template leak-stopping connector | |
| CN208456108U (en) | Body flexible connection of building a wall after a kind of seismic crack pours mold | |
| CN105965681A (en) | Vertical pouring and fast homogenizing device and method for pipe cores of PCCPs | |
| CN114193585A (en) | Prefabricated building component forming device and method | |
| CN207290427U (en) | One kind overlays pouring concrete sample preparation assembling die after waterproof roll | |
| CN206591822U (en) | Embedded box support meanss | |
| CN206186253U (en) | Novel hot runner anchor clamps that loss prevention quick assembly disassembly heat was chewed | |
| JP6637843B2 (en) | Casting method of concrete under seismic isolation device and formwork device for casting | |
| CN109531760A (en) | A kind of particieboard pressing device of embedded heating pipeline | |
| CN209699431U (en) | A kind of lower turning type is counter to play prefabricated panel mold | |
| CN217400319U (en) | Aluminum mould shear force wall bottom plugging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170728 |