CN109342137A - The corollary apparatus of weak intercalated layer production and direct shear test is adjusted in the thickness of existing protolith structural plane - Google Patents
The corollary apparatus of weak intercalated layer production and direct shear test is adjusted in the thickness of existing protolith structural plane Download PDFInfo
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- CN109342137A CN109342137A CN201811200989.5A CN201811200989A CN109342137A CN 109342137 A CN109342137 A CN 109342137A CN 201811200989 A CN201811200989 A CN 201811200989A CN 109342137 A CN109342137 A CN 109342137A
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- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 239000010410 layer Substances 0.000 claims description 62
- 230000000694 effects Effects 0.000 claims description 8
- 239000011229 interlayer Substances 0.000 claims description 7
- 230000013011 mating Effects 0.000 claims 2
- 238000000034 method Methods 0.000 description 13
- 210000003608 fece Anatomy 0.000 description 7
- 239000011435 rock Substances 0.000 description 7
- 238000005070 sampling Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 238000007906 compression Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- 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
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- 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
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- 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
- G01N2203/026—Specifications of the specimen
- G01N2203/0298—Manufacturing or preparing specimens
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (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 corollary apparatus of weak intercalated layer production and direct shear test is adjusted in a kind of thickness of existing protolith structural plane, and the corollary apparatus includes the graduated scale of bottom plate, A type expansion plate, the graduated scale of A type expansion plate sliding block, Type B expansion plate and Type B expansion plate sliding block;The backplate surface shape is square, plate upper surface has expansion plate positioning column, expansion plate positioning column is arranged symmetrically on bottom plate, expansion plate positioning column is for fixing four pieces of expansion plates, and bottom plate is the connecting plate of two pieces of A types and two pieces of Type Bs totally four pieces of expansion plates, A type expansion plate and Type B expansion plate have two pieces, and size is identical, is respectively symmetrically placed on bottom plate.The present invention, which can solve the weak intercalated layer production of existing protolith structural plane and be laid with difficult, weak interbed, is difficult to the problem of adjusting, and can control during direct shear test the experimental condition whether weak intercalated layer squeezes out.
Description
Technical field
The present invention relates to the technical fields of the existing protolith structural plane indoor direct shear test containing weak intercalated layer, especially
There are the production that weak intercalated layer is adjusted with thickness and the corollary apparatus of direct shear test of protolith structural plane.
Background technique
Structural plane has the influence of controlling, the especially weak structure containing weak intercalated layer to rock stability in engineering
Face.Weak structural face is that have certain thickness weak band in rock mass, have with the rock mass of adjacent two sides compared with high compression, it is low by force
The features such as degree, usually control the deformation and stability of rock mass.In actual engineering project, often caused by weak intercalated layer
Presence lead to Frequent Accidents, cause serious life and property loss, therefore, pass through direct shear test obtain knot containing weak intercalated layer
Structure face Research on Mechanical Properties is just particularly important.
Obtaining the rock mass discontinuity sample containing weak intercalated layer usually has two kinds of means of field condition sampling and indoor production.Room
Although interior production more safely, conveniently than field condition sampling, and can carry out repeating test, under special circumstances, due to
The problems such as material, structural plane form are excessively complicated and sample preparation is difficult, can not produce and the material of protolith structural plane, structural plane shape
The consistent model structure face such as state, therefore, in this case, structural plane often takes the method for field sampling to handle.But
For the protolith structural plane containing weak intercalated layer, field condition is deposited when obtaining the protolith structural fece sample containing weak intercalated layer
Following insufficient: 1) weak intercalated layer easily disturbs, it is difficult to obtain the protolith containing weak intercalated layer consistent with live status
Body structural fece sample;2) scene is difficult to obtain consistent multiple groups sample approximate with the protolith structure surface properties containing weak intercalated layer, nothing
Method obtains structure face mechanic index by the direct shear test of multiple groups sample;3) that there are difficulty is big, costly, sampling week for field sampling
The deficiencies of phase is long, risk is high.Therefore, it combines indoor production weak intercalated layer to become on the basis of protolith structural plane to obtain containing weakness
The important method of the protolith structural fece sample of interlayer.
Currently, for the production of weak intercalated layer in existing protolith structural fece sample be all mostly on protolith structural plane it is straight
It taps into row production and is laid with, be not only difficult to be formed the approximate consistent weak folder with live weak interbed and physico-mechanical properties
Layer, and in direct shear test test process, it is difficult to the weak intercalated layer controlled in vertical compression process squeezes out problem, causes to test
As a result undesirable.
Summary of the invention
In order to meet the requirement of the existing protolith structural plane indoor direct shear test containing weak intercalated layer, the present invention is provided
The corollary apparatus of weak intercalated layer production and direct shear test is adjusted in a kind of thickness of existing protolith structural plane, can solve existing original
The weak intercalated layer of rock structural plane makes and is laid with difficult, weak interbed and is difficult to the problem of adjusting, and in direct shear test process
In can control the experimental condition whether weak intercalated layer squeezes out.
The technical solution adopted by the present invention to solve the technical problems is:
The corollary apparatus of weak intercalated layer production and direct shear test is adjusted in a kind of thickness of existing protolith structural plane, described to match
Covering device includes the scale of bottom plate, A type expansion plate, the graduated scale of A type expansion plate sliding block, Type B expansion plate and Type B expansion plate sliding block
Ruler;
The backplate surface shape is square, and plate upper surface has expansion plate positioning column, and expansion plate positioning column exists
To be arranged symmetrically on bottom plate, expansion plate positioning column is for fixing four pieces of expansion plates, and bottom plate is two pieces of A types and two pieces of Type Bs totally four
The connecting plate of block expansion plate;
The A type expansion plate has two pieces, and size is identical, is respectively symmetrically placed on one group of opposite side of bottom plate, A type expansion plate
Upper to have A type expansion plate sliding block, A type expansion plate sliding block can be slided in A type expansion plate sliding slot, can be according in specific test
Weak interbed condition, which slides into, requires position;A type expansion plate bottom location hole is arranged at A type expansion plate bottom, is used to and bottom plate
It is attached;
The Type B expansion plate has two pieces, and size is identical, is symmetrically arranged on another group of opposite side of bottom plate, Type B is stretched
Type B expansion plate sliding block is had on contracting plate, Type B expansion plate sliding block can be slided in Type B expansion plate sliding slot, can be according to specific examination
The needs for testing middle weak interbed condition, which slide into, requires position;Type B expansion plate bottom location hole is arranged at Type B expansion plate bottom,
For being attached with bottom plate.
Further, A type expansion plate sliding block fixing bolt effect is fixed A type expansion plate sliding block.
The Type B expansion plate sliding block fixing bolt effect is fixed Type B expansion plate sliding block.
Further, the position difference of the graduated scale of the graduated scale and Type B expansion plate sliding block of the A type expansion plate sliding block
It is both for recording lower disc face upper surface and the weak folder of filling on A type expansion plate sliding block and Type B expansion plate sliding block
The graduation position of weak intercalated layer upper surface after layer and compacting, it follows that the weak interbed of filling, so that it is determined that filling
Whether weak interbed is consistent with test requirements document.
Technical concept of the invention are as follows: The present invention gives a kind of thickness of existing protolith structural plane, and weak intercalated layer is adjusted
Production and direct shear test corollary apparatus and operating method, can conveniently and efficiently complete the weakness to existing protolith structural plane
The production of interlayer and corresponding compression and direct shear test, have easy to operate, safe and reliable, good, efficient quick of effect etc. excellent
Point.
Beneficial effects of the present invention are mainly manifested in:
(1) required structural plane form can be selected to complete the system of weak intercalated layer for different protolith structural planes
Make;
(2) production of weak intercalated layer can be completed with direct shear test test process in the corollary apparatus, realize weak folder
Layer production is integrated with direct shear test;
(3) production of different weak thickness and corresponding can be realized according to the thickness of field measurement weak intercalated layer
Direct shear test;
(4) present invention can be controlled in weak intercalated layer lateral confinement constraint condition in vertical loading procedure, can be real in shear history
Now freely shear.
Detailed description of the invention
Fig. 1 is top view of the invention.
Fig. 2 is front view of the invention.
Fig. 3 is left view of the invention.
Fig. 4 is that Fig. 1 completes the 1-1 sectional view after weak intercalated layer production.
Fig. 5 is the top view of insole board of the present invention.
Fig. 6 is the front view of insole board of the present invention.
Fig. 7 is the top view of A type expansion plate.
Fig. 8 is the front view of A type expansion plate.
Fig. 9 is the left view of A type expansion plate (sliding block does not slide).
Figure 10 is the left view of A type expansion plate (sliding block has slided a certain distance).
Figure 11 is the top view of Type B expansion plate.
Figure 12 is the front view of Type B expansion plate.
Figure 13 is the left view of Type B expansion plate (sliding block does not slide).
Figure 14 is the left view of Type B expansion plate (sliding block has slided a certain distance).
Figure 15 is the inner surface detail drawing of A type expansion plate sliding block.
Figure 16 is the inner surface detail drawing of Type B expansion plate sliding block.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Weak intercalated layer production and direct shear test is adjusted in referring to Fig.1~Figure 16, a kind of thickness of existing protolith structural plane
Corollary apparatus, the corollary apparatus include bottom plate 1, A type expansion plate 2, A type expansion plate sliding block fixing bolt 4, A type expansion plate cunning
The graduated scale 9 of block, Type B expansion plate 3, Type B expansion plate sliding block fixing bolt 5 and Type B expansion plate sliding block graduated scale 10.
1 surface shape of bottom plate is square, and 1 upper surface of bottom plate has expansion plate positioning column 101, expansion plate positioning
Column 101 is to be arranged symmetrically on bottom plate 1, and the purpose of expansion plate positioning column 101 is for fixing four pieces of expansion plates, and bottom plate 1 is
The connecting plate of two pieces of A types and two pieces of Type Bs totally four pieces of expansion plates.
The A type expansion plate 2 has two pieces, and size is identical, is respectively symmetrically placed on one group of opposite side of bottom plate 1.A type is flexible
A type expansion plate sliding block 201 is had on plate 2, A type expansion plate sliding block 201 can be slided in A type expansion plate sliding slot 202, can root
It is slid into according to weak interbed condition in specific test and requires position, consolidated using A type expansion plate sliding block fixing bolt 4
Fixed, when carrying out vertical compression test, A type expansion plate sliding block 201 can control whether weak intercalated layer squeezes out.Add carrying out shearing
Before load, A type expansion plate sliding block 201 is slided into initial position, and (initial position is the position that A type expansion plate sliding block 201 does not skid off
Set), shear history can be realized.A type expansion plate bottom location hole 203 is arranged at 2 bottom of A type expansion plate, for being connected with bottom plate 1
It connects, has the function that fixed.
The Type B expansion plate 3 has two pieces, and size is identical, is symmetrically arranged on another group of opposite side of bottom plate 1.Type B
Type B expansion plate sliding block 301 is had on expansion plate 3, Type B expansion plate sliding block 301 302 can be slided in Type B expansion plate sliding slot,
It can be slid into according to the needs of weak interbed condition in specific test and require position, utilize the fixed spiral shell of Type B expansion plate sliding block
Bolt 5 is fixed, and Type B expansion plate sliding block 301 can control whether weak intercalated layer squeezes out.Before carrying out shearing load, by Type B
Expansion plate sliding block 301 slides into initial position (initial position is the position that Type B expansion plate sliding block 301 does not skid off), can be realized
Shear history.Type B expansion plate bottom location hole 303 is arranged at 3 bottom of Type B expansion plate, for being attached with bottom plate 1, reaches fixed
Effect.
The effect of A type expansion plate sliding block fixing bolt 4 is fixed A type expansion plate sliding block 201.
The effect of Type B expansion plate sliding block fixing bolt 5 is fixed Type B expansion plate sliding block 301.
The position of the graduated scale 10 of the graduated scale 9 and Type B expansion plate sliding block of the A type expansion plate sliding block is respectively in A type
It is both weak for recording 8 upper surface of lower disc face and filling on expansion plate sliding block 201 and Type B expansion plate sliding block 301
The graduation position of 7 upper surface of weak intercalated layer after interlayer 7 and compacting, it follows that the thickness of the weak intercalated layer 7 of filling, so that it is determined that
Whether the thickness of the weak intercalated layer 7 of filling is consistent with test requirements document.
Now by taking protolith structural fece sample is having a size of 100mm × 100mm × 200mm as an example, weak interbed 10mm,
It is described with reference to the accompanying drawings embodiment of the present invention:
(1) field sampling.The upper dish structure interview sample 6 of protolith structural plane is obtained in field and lower disc interviews sample 8.
(2) bottom plate 1 is placed.Bottom plate 1 is placed on levelling ground.
The installation of (3) four pieces of expansion plates.Two pieces of A type expansion plates 2 and two pieces of Type B expansion plates 3 are symmetrically placed the bottom of in two-by-two
On plate 1, four pieces of expansion plates are fastened on bottom plate 1 by (stretching in four pieces of expansion plates at this time by expansion plate positioning column 101
Plate sliding block is in the state not skidded off).
(4) protolith structural plane lower wall sample 8 is placed.Protolith structural plane lower wall sample 8 is placed in assembled match
In covering device.
(5) determination of 7 thickness of weak intercalated layer.The weakness of test requirements document is determined according to the actual measurement thickness of live weak intercalated layer 7
7 thickness of interlayer.
The fixation of expansion plate sliding block in (6) four pieces of expansion plates.According to 7 thickness of weak intercalated layer identified in (5), by four pieces
Expansion plate sliding block in expansion plate is slided (as long as sliding distance is more than 7 thickness of weak intercalated layer), sliding using expansion plate
Expansion plate sliding block is fixed block fixing bolt.
(7) graduation position of 8 upper surface of lower disc face expansion plate sliding block in expansion plate is recorded.
(8) weak intercalated layer material 7 is filled.Prepared weak intercalated layer material 7 is poured into existing protolith structural fece sample
Lower disc face 8 on, and carried out according to physical properties such as the liquid plasticity index of weak intercalated layer Rock And Soil at scene, compactness pre-
Consolidation and compaction treatment keep the approximate consistent engineering properties with live weak intercalated layer.
(9) record fills the graduation position of rear 7 upper surface of weak intercalated layer.
(10) judgement fill 7 thickness of weak intercalated layer whether with live consistency of thickness.The scale of step (9) neutralization procedure (7)
Difference is the thickness of weak intercalated layer 7 filled, if being unsatisfactory for the thickness requirement in step (5), repeatedly step (8) and (9),
Until reaching requirement.
(11) disk sample 6 is placed on protolith structural plane.Disk sample 6 on protolith structural plane is placed in filled it is soft
In weak interlayer 7.
(12) maintenance of weak intercalated layer 7.Corollary apparatus with protolith structural fece sample 6,8 and weak intercalated layer 7 is placed
Fog room is conserved.
(13) realization that control weak intercalated layer 7 squeezes out in vertical loading procedure.By this corollary apparatus together with this device inside
Protolith structural plane on disk sample 6, lower wall sample 8 and weak intercalated layer 7 be placed on direct shear test machine, adjusted according to field condition
The problem of whether weak intercalated layer 7 squeezes out.If field condition does not allow weak intercalated layer 7 to squeeze out, it is solid that expansion plate sliding block is not unclamped
Determine bolt;If field condition allows weak intercalated layer 7 to squeeze out, expansion plate sliding block fixing bolt is unclamped, four pieces of expansion plates are sliding
Block slides to initial position (initial position is the position that four pieces of expansion plate sliding blocks do not skid off).Then further according to live structural plane
Vertical stress size is vertically loaded, until vertical deformation is stablized, records corresponding vertical load and vertical deformation.
(14) realization of loading procedure is sheared.Before shearing, unclamp expansion plate sliding block fixing bolt and, by four pieces of expansion plates
Sliding block slides to initial position (initial position is the position that four pieces of expansion plate sliding blocks do not skid off), exposes the shearing of weak intercalated layer 7
Then face carries out the fixation in dish structure face 6, then apply horizontal loading to lower disc face 8, until it is broken that shear surface occurs
Bad, test process terminates, and records corresponding horizontal direction load and tangential deformation.
(15) in set-up procedure (5) weak intercalated layer 7 thickness, repeat step (6)-(14) can be achieved protolith structural plane in have
There are the production and the test of corresponding direct shear test of different weak thickness.
(16) the protolith structural plane in step (1) is replaced, it is thin-skinned that different protolith structures can be achieved in repetition step (2)-(15)
The production of weak interlayer and the test of corresponding direct shear test.
Claims (4)
1. the corollary apparatus of weak intercalated layer production and direct shear test is adjusted in a kind of thickness of existing protolith structural plane, feature exists
In the corollary apparatus includes graduated scale, Type B expansion plate and the Type B expansion plate of bottom plate, A type expansion plate, A type expansion plate sliding block
The graduated scale of sliding block;
The backplate surface shape is square, and plate upper surface has expansion plate positioning column, and expansion plate positioning column is in bottom plate
Upper is to be arranged symmetrically, and expansion plate positioning column is for fixing four pieces of expansion plates, and bottom plate is that two pieces of A types and two pieces of Type Bs are stretched for four pieces totally
The connecting plate of contracting plate;
The A type expansion plate has two pieces, and size is identical, is respectively symmetrically placed on one group of opposite side of bottom plate, band on A type expansion plate
There is A type expansion plate sliding block, A type expansion plate sliding block can be slided in A type expansion plate sliding slot, can be according to weak in specific test
Thickness of interlayer condition, which slides into, requires position;A type expansion plate bottom location hole is arranged at A type expansion plate bottom, is used to carry out with bottom plate
Connection;
The Type B expansion plate has two pieces, and size is identical, is symmetrically arranged on another group of opposite side of bottom plate, Type B expansion plate
Upper to have Type B expansion plate sliding block, Type B expansion plate sliding block can be slided in Type B expansion plate sliding slot, can be according in specific test
The needs of weak interbed condition, which slide into, requires position;Type B expansion plate bottom location hole is arranged at Type B expansion plate bottom, is used to
It is attached with bottom plate.
2. the mating of weak intercalated layer production and direct shear test is adjusted in the thickness of existing protolith structural plane as described in claim 1
Device, which is characterized in that the A type expansion plate sliding block fixing bolt effect is fixed A type expansion plate sliding block.
3. the mating of weak intercalated layer production and direct shear test is adjusted in the thickness of existing protolith structural plane as described in claim 1
Device, which is characterized in that the Type B expansion plate sliding block fixing bolt effect is fixed Type B expansion plate sliding block.
4. weak intercalated layer production and staight scissors examination is adjusted in the thickness of the existing protolith structural plane as described in one of claims 1 to 3
The corollary apparatus tested, which is characterized in that the graduated scale of the graduated scale and Type B expansion plate sliding block of the A type expansion plate sliding block
Position is respectively both for recording lower disc face upper surface and filling out on A type expansion plate sliding block and Type B expansion plate sliding block
The graduation position of weak intercalated layer upper surface after entering weak intercalated layer and being compacted, it follows that the weak interbed of filling, thus really
Whether the weak interbed inserted surely is consistent with test requirements document.
Priority Applications (1)
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CN201811200989.5A CN109342137B (en) | 2018-10-16 | 2018-10-16 | Supporting device for manufacturing weak interlayer with adjustable thickness of original rock structural surface and direct shear test |
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CN201811200989.5A CN109342137B (en) | 2018-10-16 | 2018-10-16 | Supporting device for manufacturing weak interlayer with adjustable thickness of original rock structural surface and direct shear test |
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CN109342137A true CN109342137A (en) | 2019-02-15 |
CN109342137B CN109342137B (en) | 2023-11-17 |
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