CN105699211B - A kind of test method of rock seepage-pipe coupling model shear rheology test - Google Patents
A kind of test method of rock seepage-pipe coupling model shear rheology test Download PDFInfo
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- CN105699211B CN105699211B CN201610058917.6A CN201610058917A CN105699211B CN 105699211 B CN105699211 B CN 105699211B CN 201610058917 A CN201610058917 A CN 201610058917A CN 105699211 B CN105699211 B CN 105699211B
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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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Abstract
The invention discloses a kind of test methods of rock seepage-pipe coupling model shear rheology test, rock sample is put into seepage-pipe coupling model shear rheology test box, in the hollow circuit cylinder cylinder formed between the test box of lower part, on, the contact surface of lower part test box is inclined-plane, apply confining pressure to seal sleeve to fix, apply axis pressure to the pressure-bearing surface on top test box top, on, lower part test box is respectively equipped with from upper, lower surface leads to the water seepage hole of contact surface and applies osmotic pressure, the shear strain of rock sample is conversed according to the horizontal strain that the strain gauge that lower part test box bottom is installed obtains.The present invention can carry out the test of the seepage-pipe coupling model shear rheology under tilt angle by applying axial compressive force, by inclination angle, that is, shearing inclination α of axis pressure and shear surface come the shear stress that converts, and by lower part test box bottom end strain gauge and shearing inclination α conversion seepage-pipe coupling model shear flow variable, there is reference value to shear rheology characteristic issues of quantitative study rock under the conditions of infiltration-stress coupling.
Description
Technical field
The present invention relates to rock mechanics and engineering fields, and in particular to a kind of rock seepage-pipe coupling model shear rheology examination
It tests.
Background technique
The research of permeability of rock is one important research topic of current rock mechanics, has very important engineering
Background and meaning, such as the dam foundation, tunnel or the excavation in cave, oil-gas mining etc., underground water are to influence the stable weight of rock engineering
Want factor.Shearing test under the conditions of rock seepage-pipe coupling model is the base of the mechanisms of production such as earthquake in research engineering, landslide
Plinth, therefore the attention by domestic and international rock mechanics worker.
The rheodestruction of rock is generally existing, and the destruction of many rock mass engineering projects all causes because of the rheodestruction of rock.Rock
The rheological test of stone is the basic means of study of rocks mechanical characteristic under action of long-term load, carries out rock seepage-stress coupling
Shear rheology test under the conditions of conjunction can qualitatively and quantitatively study the seepage-pipe coupling model problem in shear rheology test.
At present in the test of rock shearing rheology, the form research level shear surface of horizontal addload is mostly used greatly, there are no progress
Shear rheology under Vertical loading with different angle is tested.
Summary of the invention
Goal of the invention: in view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of rock seepage-pipe coupling model
The test method of shear rheology test solves rock measuring technology of seepage-pipe coupling model shear rheology under tilt angle and asks
Topic.
Technical solution: the present invention provides a kind of test methods of rock seepage-pipe coupling model shear rheology test, including
Following steps:
(1) rock sample is put into seepage-pipe coupling model shear rheology test box between the test box of upper and lower part formed it is hollow
In cylindrical drum, the contact surface of upper and lower part test box is inclined-plane, and the seepage-pipe coupling model shear rheology test box is placed in sealing
In sleeve, it is put on rock triaxial test instrument and is fixed；
(2) apply confining pressure to seal sleeve to fix, only in sleeve inner sliding variation occurs for guarantee test box；
(3) apply axis pressure to the pressure-bearing surface on top test box top；
(4) upper and lower part test box is respectively equipped with the water seepage hole that contact surface is led to from upper and lower surfaces, by water seepage hole to rock
Sample applies osmotic pressure；
(5) shear strain of rock sample is conversed according to the horizontal strain that the strain gauge that lower part test box bottom is installed obtains.
Further, the oblique angle of upper and lower part test box contact surface is shearing inclination α, and shear stress is pressed and sheared by axis
Angle [alpha] is converted to obtain.
Further, lower part test outer box wall circumferentially 2/3 part be equipped with the recess filled by elastic deformation material,
The bottom of lower part test box is equipped with sliding slot, and strain gauge is placed in sliding slot, provides sky for the horizontal distortion sliding of lower part test box
Between.
Further, the depth of the recess is the permitted maximum horizontal displacement amount of lower part test box.
Further, the osmotic pressure of the lower part test box water seepage hole is greater than the osmotic pressure of top test box water seepage hole, and osmotic pressure difference is
For the osmotic pressure in shear rheology test.
Further, stable osmotic pressure value is applied to rock sample and is kept for 24 hours.
In order to guarantee that osmotic pressure application direction is symmetrical along rock sample, the water seepage hole of the upper and lower part test box is along contact surface
Heart central symmetry.
Further, the water seepage hole is equipped with waterproof groove along the outwardly extending position of contact surface, and inside grooves have collision mat
Layer, upper and lower part test box are equipped with projection piece compatible with groove in position corresponding with waterproof groove, permeate for preventing
Water in addition to shear surface direction remaining direction permeate.
In order to guarantee that rock sample is bonded matching with test box, does not interspace, high-performance rubber is placed in the hollow circuit cylinder cylinder
Set, rubber sleeve internal diameter are identical as the outer diameter of rock sample.
Further, the seal sleeve is copper material, for fixing upper and lower part test box, guarantees top test box only
Axially movable.
The utility model has the advantages that can pass through the present invention provides a kind of test method of seepage-pipe coupling model shear rheology test
Apply axial compressive force to carry out the test of seepage-pipe coupling model shear rheology under tilt angle, is inclined by axis pressure with shear surface
Angle, that is, shearing inclination α is answered come the shear stress that converts by lower part test box bottom end strain gauge and shearing inclination α conversion seepage flow-
Couple of force closes shear flow variable, has ginseng to shear rheology characteristic issues of quantitative study rock under the conditions of infiltration-stress coupling
Examine value.
Detailed description of the invention
Fig. 1 is the axial section of device in test method of the present invention；
Fig. 2 is the top plan view of device in test method of the present invention；
Fig. 3 is the bottom plan view of device in test method of the present invention；
Fig. 4 is top test box shear surface plan view；
Fig. 5 is lower part test box shear surface plan view.
Specific embodiment
Technical solution of the present invention is described in detail below, but protection scope of the present invention is not limited to the implementation
Example.
Embodiment: a kind of test method of seepage-pipe coupling model shear rheology test, as shown in Fig. 1~5, seepage-stress
Coupled shear rheological test box is made of the upper and lower part test box 1,2 using inclined-plane as contact surface, which is to have one
Determine the shear surface of shearing inclination α, forms hollow circuit cylinder cylinder between upper and lower part test box 1,2, place high-performance in hollow circuit cylinder cylinder
Rubber sleeve 4,6, rubber sleeve 4,6 internal diameters are identical as the outer diameter of rock sample 8.Rock sample 8 is put into the test of seepage-pipe coupling model shear rheology
In box, then seepage-pipe coupling model shear rheology test box is put into copper seal sleeve 12, and is put into the examination of three axis of rock
It tests on instrument and is fixed, carry out the application of confining pressure, osmotic pressure, finally apply axis pressure and carry out the test of seepage-pipe coupling model shear rheology.
Apply confining pressure to seal sleeve 12 first to fix, the top surface that top test box 1 includes is smooth pressure-bearing surface 3, right
It applies axis pressure.Upper and lower part test box 2, which is respectively equipped with from 5,7 pairs of rock samples 8 of water seepage hole that upper and lower surfaces lead to shear surface, to be applied
Osmotic pressure, two water seepage holes 5,7 are symmetrical along the revenue centre of shear surface.The outwardly extending position on shear surface of water seepage hole 5,7 is set
There is waterproof groove 13, there is waterproof bed course inside groove 13, upper and lower part test box 2 is corresponding with waterproof groove 13 on the contact surface
Position be equipped with projection piece 14 compatible with groove 13, prevent infiltration water in addition to shear surface direction remaining direction permeate.Under
The outer wall of portion's test box 2 circumferentially 2/3 part be equipped with recess 9, recess 9 is filled by elastic deformation material, and lower part test box 2
Bottom it is corresponding sliding slot 10 is installed, strain gauge 11 is placed in sliding slot 10, for measuring the water of lower part test box 2 in test
Flat strain, and the shear strain for the rock sample 8 that converted by shearing inclination α.
Specific implementation step is as follows:
1. obtaining underground core sample with core bit, the complete core examination of intact, lossless, original internal structure is chosen
Sample, be processed into height be 100mm, the standard cylindrical rock sample 8 that diameter is 50mm.
2. high-performance rubber set 4,6 is placed inside seepage-pipe coupling model shear rheology test box internal hollow cylinder cylinder, it will
Rock sample is put into high-performance rubber set 4,6, and entire test box is then put into seal sleeve 12, places into rock triaxial test instrument
On be fixed, outside apply confining pressure be kept fixed sleeve.
3. applying osmotic pressure to stationary value to rock sample 8 continues 24 hours, the osmotic pressure of middle and lower part test box 2 is tested greater than top
The osmotic pressure of box 1, osmotic pressure difference are the osmotic pressure in shear rheology test.
4. applying axial compressive force to test box top pressure-bearing surface 3 to carry out shear rheology test, shear stress can pass through axis
Pressure is converted to obtain with shearing inclination α.
5. deforming using the horizontal strain that the strain gauge 11 of lower part test box 2 measures lower part test box 2, then pass through the angle of shear
Spend the shear strain amount under α conversion seepage-pipe coupling model.
Claims (9)
1. a kind of test method of rock seepage-pipe coupling model shear rheology test, it is characterised in that: the following steps are included:
(1) rock sample is put into the hollow circuit cylinder formed between the test box of upper and lower part in seepage-pipe coupling model shear rheology test box
In cylinder, the contact surface of upper and lower part test box is inclined-plane, and the seepage-pipe coupling model shear rheology test box is placed in seal sleeve
It is interior, it is put on rock triaxial test instrument and is fixed；
(2) apply confining pressure to seal sleeve to fix；
(3) apply axis pressure to the pressure-bearing surface on top test box top；
(4) upper and lower part test box is respectively equipped with the water seepage hole that contact surface is led to from upper and lower surfaces, is applied by water seepage hole to rock sample
Add osmotic pressure；
(5) shear strain of rock sample is conversed according to the horizontal strain that the strain gauge that lower part test box bottom is installed obtains,
Lower part test outer box wall circumferentially 2/3 part be equipped with the recess filled by elastic deformation material, lower part test box
Bottom sliding slot is installed, strain gauge is placed in sliding slot, for lower part test box horizontal distortion sliding space is provided.
2. the test method of rock seepage-pipe coupling model shear rheology test according to claim 1, it is characterised in that:
The oblique angle of upper and lower part test box contact surface is shearing inclination α, and shear stress convert with shearing inclination α by axis pressure
It arrives.
3. the test method of rock seepage-pipe coupling model shear rheology test according to claim 1, it is characterised in that:
The depth of the recess is the permitted maximum horizontal displacement amount of lower part test box.
4. the test method of rock seepage-pipe coupling model shear rheology test according to claim 1, it is characterised in that:
The osmotic pressure of the lower part test box water seepage hole is greater than the osmotic pressure of top test box water seepage hole, and osmotic pressure difference is in shear rheology test
Osmotic pressure.
5. the test method of rock seepage-pipe coupling model shear rheology test according to claim 1, it is characterised in that:
Stable osmotic pressure value is applied to rock sample and is kept for 24 hours.
6. the test method of rock seepage-pipe coupling model shear rheology test according to claim 1 or 4, feature exist
In: the water seepage hole of the upper and lower part test box is symmetrical along the revenue centre of contact surface.
7. the test method of rock seepage-pipe coupling model shear rheology test according to claim 1 or 4, feature exist
In: the water seepage hole is equipped with waterproof groove along the outwardly extending position of contact surface, and inside grooves have waterproof bed course, upper and lower part examination
It tests box and is equipped with projection piece compatible with groove in position corresponding with waterproof groove.
8. the test method of rock seepage-pipe coupling model shear rheology test according to claim 1, it is characterised in that:
High-performance rubber set is placed in the hollow circuit cylinder cylinder, rubber sleeve internal diameter is identical as the outer diameter of rock sample.
9. the test method of rock seepage-pipe coupling model shear rheology test according to claim 1, it is characterised in that:
The seal sleeve is copper material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610058917.6A CN105699211B (en) | 2016-01-28 | 2016-01-28 | A kind of test method of rock seepage-pipe coupling model shear rheology test |
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| CN201610058917.6A CN105699211B (en) | 2016-01-28 | 2016-01-28 | A kind of test method of rock seepage-pipe coupling model shear rheology test |
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| CN105699211B true CN105699211B (en) | 2019-04-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884288B (en) * | 2017-12-18 | 2023-09-26 | 成都理工大学 | Manufacturing and testing method of rock compression shear sample containing intermittent joints at high temperature |
| CN108181172A (en) * | 2017-12-29 | 2018-06-19 | 浙江大学 | A kind of inclination basement rock pile foundation failure mode and load-carrying properties indoor simulation device and its method |
| CN110160891B (en) * | 2019-06-28 | 2020-03-13 | 河北工业大学 | Shearing seepage coupling test device for accumulation body-rock interface |
| CN114184496B (en) * | 2020-09-15 | 2024-07-05 | 中国石油化工股份有限公司 | Device and method for testing sleeve shearing strength and deformation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101034088A (en) * | 2007-04-18 | 2007-09-12 | 同济大学 | Rock joint shear-seepage coupling experiment box |
| CN101059495B (en) * | 2007-05-09 | 2011-12-07 | 同济大学 | rock joint shearing-seepage coupling test system |
| CN201434814Y (en) * | 2009-05-22 | 2010-03-31 | 清华大学 | Test unit for measuring seepage scouring characteristic of contact surface between soil body and structure |
| CN102323166A (en) * | 2011-08-19 | 2012-01-18 | 河海大学 | Cascade circular inclined plane shearing apparatus |
| CN102607950B (en) * | 2012-03-05 | 2013-08-07 | 山东科技大学 | Rock shearing seepage coupling true triaxial test system |
| CN103163026B (en) * | 2013-03-08 | 2014-09-24 | 长安大学 | Rock-soil pressure shear rheological testing machine and testing method |
| CN104316447A (en) * | 2014-10-28 | 2015-01-28 | 中国矿业大学 | Fractured rock mass stress and seepage coupled testing system and method |
| CN105115832B (en) * | 2015-06-26 | 2017-12-05 | 中国科学院地质与地球物理研究所 | A kind of geotechnique for considering seepage effect tiltedly cuts strength test device |
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