CN105865942B - A kind of shear box of rock mass discontinuity shearing performance test system - Google Patents
A kind of shear box of rock mass discontinuity shearing performance test system Download PDFInfo
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- CN105865942B CN105865942B CN201610348937.7A CN201610348937A CN105865942B CN 105865942 B CN105865942 B CN 105865942B CN 201610348937 A CN201610348937 A CN 201610348937A CN 105865942 B CN105865942 B CN 105865942B
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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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- 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
- G01N2203/0025—Shearing
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of shear boxs of rock mass discontinuity shearing performance test system, including upper shear box and down cut box, the upper shear box and the down cut box are that fixed the first semi-open cuboid cavity formed is bolted by shearing outer box, U-board, left and right riser and front and rear riser.The present invention dismounts various sizes of U-board, left and right riser and front and rear riser by bolt device, so that upper shear box and down cut box can form various sizes of cuboid cavity, to carry out direct shear test to more multiple dimensioned square rock mass discontinuity sample;The direct shear test of cylindrical rock mass discontinuity sample can be completed in cuboid cavity inside installation square sleeve by bolt device, it is achieved thereby that carrying out direct shear test to different sizes, different types of rock mass discontinuity sample to reach different research purposes.
Description
Technical field
The present invention relates to rock mass mechanics laboratory experiment fields, and in particular to a kind of rock mass discontinuity shearing performance test system
Shear box.
Background technology
Rock mass is made of structure and structural plane, and the mechanical property of structural plane is mainly manifested in normal deformation, detrusion
With three aspect of shearing strength.In low stress area, engineering rock mass unstability is mainly manifested in rock mass and is broken along structural plane generation detrusion
It is bad, therefore common important indicator of the rock mass structural plane shearing strength as evaluation engineering rock stability.
Rock mass mechanics laboratory test is the important channel of research structure facial disfigurement and strength characteristics.Wherein, direct shearing is tried
Proved recipe just controls load path, is easily obtained normal dimensions and shear parameters, is the preferred experiment of cognitive structure face shearing behavior
Method.
The shearing strength of rock mass discontinuity has apparent dimensional effect, due to current direct shear test instrument shear box size
Limitation, the Research on Size Effect of structural plane shear strength is not perfect, the stable threshold of the dimensional effect of structural face shear strength
It does not understand also, the Research on Size Effect of structural plane dynamic shear strength still belongs to blank, the size effect of reinforcement structure face shearing strength
It should study and be of great significance for obtaining structural face shear strength parameter and evaluation rock mass engineering project stability.
The content of the invention
To solve the above problems, the present invention provides a kind of shear boxs of rock mass discontinuity shearing performance test system, it should
The structure design of shear box can be used for carrying out direct shear test to different sizes, different types of rock mass discontinuity sample.
To achieve the above object, the technical solution taken of the present invention is:
A kind of shear box of rock mass discontinuity shearing performance test system, including upper shear box and down cut box, it is described on
Shear box and the down cut box are that fixed structure is bolted by shearing outer box, U-board, left and right riser and front and rear riser
Into the first semi-open cuboid cavity.
Preferably, the shearing outer box include the first left and right sidewall, the first front-rear side walls and the first bottom plate, the first left and right sides
Wall, the first front-rear side walls and the first bottom plate form semi-open cuboid cavity, and the height of the first front-rear side walls is less than first left side
The height of right side wall shoots with video-corder failure by shear process convenient for observation, and the U-board includes the second bottom plate and the second left and right sidewall, the
Two base plate externals are contacted with the first base plate interior, and first front-rear side walls, the second bottom plate and the second left and right sidewall pass through bolt
Connection is fixed to form the second semi-open cuboid cavity, and the second left and right sidewall end is flushed with the first left and right sidewall end, described
Respectively with the second left and right sidewall and the second contacts baseplate, the first front-rear side walls are connected left and right riser with the left and right riser by bolt
The 3rd semi-open cuboid cavity of fixed composition is connect, the end of the left and right riser is flushed with the second left and right sidewall end, and first
Fixation is bolted with the front and rear riser in front-rear side walls, and the left and right riser and the front and rear riser composition the 4th are half-open
The cube that lengthens cavity, the end of the front and rear riser are less than the first front-rear side walls end.
Preferably, the inner bottom surface size of the described first semi-open cuboid cavity and the second semi-open cuboid cavity outer bottom
Face size is identical.
Preferably, the size of the left and right riser is identical with the left and right madial wall size of the second semi-open cuboid cavity.
Preferably, the front and rear riser, left and right riser and U-board are respectively provided with various different sizes, with meet different sizes,
The direct shear test requirement of different type rock mass discontinuity sample.
The invention has the advantages that:
Various sizes of U-board, left and right riser and front and rear riser are dismounted by bolt device so that upper shear box and
Down cut box can form various sizes of cuboid cavity, direct to be carried out to more multiple dimensioned square rock mass discontinuity sample
Shearing test;Square sleeve is installed in cuboid cavity inside by bolt device, the straight of cylindrical structural interview sample can be completed
Shearing test is connect, it is achieved thereby that carrying out direct shear test to different sizes, different types of rock mass discontinuity sample to reach
To different research purposes.
Description of the drawings
Fig. 1 is the structure diagram that outer box are sheared in a kind of preferred embodiment of the present invention;
Fig. 2 is the structure diagram of U-board in a kind of preferred embodiment of the present invention;
Fig. 3 is that outer box, the structure diagram of U-board combination are sheared in a kind of preferred embodiment of the present invention;
Fig. 4 is the structure diagram of left and right riser and front and rear riser in a kind of preferred embodiment of the present invention;
Fig. 5 is that outer box, U-board, left and right riser and the knot of front and rear riser combination are sheared in a kind of preferred embodiment of the present invention
Structure schematic diagram;
Fig. 6 is the structure diagram of U-board in a kind of preferred embodiment of the present invention;
Fig. 7 is the structure diagram that Fig. 5 and Fig. 6 is combined;
Fig. 8 is the structure diagram of left and right riser and front and rear riser in a kind of preferred embodiment of the present invention;
Fig. 9 is the structure diagram that Fig. 7 and Fig. 8 is combined;
Figure 10 is the structure diagram of U-board in a kind of preferred embodiment of the present invention;
Figure 11 is the structure diagram that Fig. 9 and Figure 10 is combined;
Figure 12 is the structure diagram of left and right riser and front and rear riser in a kind of preferred embodiment of the present invention;
Figure 13 is the structure diagram that Figure 11 and Figure 12 is combined;
Figure 14 is the structure diagram of U-board in a kind of preferred embodiment of the present invention;
Figure 15 is the structure diagram that Figure 13 and Figure 14 is combined;
Figure 16 is the structure diagram of square sleeve in a kind of preferred embodiment of the present invention;
Figure 17 is the structure diagram that Figure 13 and Figure 16 is combined;
In figure:(a)Front view;(b)Side view;(c)Top view;
The upper shear boxs of 1-;2- down cut boxes;3- shears outer box;4-U shape plates;5- or so risers;Riser before and after 6-;7- is square
Sleeve.
Specific embodiment
In order to which objects and advantages of the present invention are more clearly understood, the present invention is carried out with reference to embodiments further
It is described in detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this hair
It is bright.
As Figure 1-Figure 5, an embodiment of the present invention provides a kind of shearings of rock mass discontinuity shearing performance test system
Box, including upper shear box 1 and down cut box 2, the upper shear box 1 and the down cut box 2 are by shearing outer box 3, U-board
4th, the first semi-open cuboid cavity of fixed composition is bolted in left and right riser 5 and front and rear riser 6.
Preferably, it is described shearing outer box 3 include the first left and right sidewall, the first front-rear side walls and the first bottom plate, first or so
Side wall, the first front-rear side walls and the first bottom plate form semi-open cuboid cavity, and the height of the first front-rear side walls is less than first
The height of left and right sidewall shoots with video-corder failure by shear process convenient for observation, and the U-board 4 includes the second bottom plate and the second left and right sidewall,
Second base plate external is contacted with the first base plate interior, and first front-rear side walls, the second bottom plate and the second left and right sidewall pass through spiral shell
It tethers and connects the second semi-open cuboid cavity of fixed composition, the second left and right sidewall end is flushed with the first left and right sidewall end, institute
It states left and right riser 5 and passes through spiral shell with the second left and right sidewall and the second contacts baseplate, the first front-rear side walls and the left and right riser 5 respectively
It tethering and connects the 3rd semi-open cuboid cavity of fixed composition, the end of the left and right riser 5 is flushed with the second left and right sidewall end,
Fixation is bolted with the front and rear riser 6 in first front-rear side walls, and the left and right riser 5 is formed with the front and rear riser 6
4th semi-open cuboid cavity, the end of the front and rear riser 6 is less than the first front-rear side walls end, rock mass structure interview
Sample is located in the cuboid cavity that upper shear box 1 and down cut box 2 are formed.
U-board 4, left and right riser 5 and front and rear riser 6 include sizes, such as Fig. 6, Fig. 8, Figure 10, Figure 12, Tu14Suo
Show;Various sizes of U-board 4, left and right riser 5 and front and rear riser 6, upper shear box 1 and down cut box 2 are dismounted by bolt device
Various sizes of cuboid cavity can be formed, to complete the examination of the direct shearing of more multiple dimensioned square rock mass discontinuity sample
It tests, as shown in Fig. 7, Fig. 9, Figure 11, Figure 13, Figure 15.
With reference to figure 16 and Figure 17, in order to reach different research purposes, in cuboid cavity inside as shown in fig. 13 that, lead to
Cross bolt device installation square sleeve 7, you can direct shear test is carried out to cylindrical structural interview sample.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, several improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (4)
1. a kind of shear box of rock mass discontinuity shearing performance test system, including upper shear box (1) and down cut box (2),
It is characterized in that, the upper shear box (1) and the down cut box (2) are by shearing outer box (3), U-board (4), left and right riser
(5) and fixed the first semi-open cuboid cavity formed is bolted in front and rear riser (6), and the shearing outer box (3) are wrapped
The first left and right sidewall, the first front-rear side walls and the first bottom plate are included, the first left and right sidewall, the first front-rear side walls and the first bottom plate are formed
Semi-open cuboid cavity, and the height of the first front-rear side walls is less than the height of the first left and right sidewall, the U-board (4) includes
Second bottom plate and the second left and right sidewall, the second base plate external are contacted with the first base plate interior, first front-rear side walls, the second bottom
Plate and the second left and right sidewall be bolted it is fixed form the second semi-open cuboid cavity, the second left and right sidewall end and the
One left and right sidewall end flushes, and the left and right riser (5) is respectively with the second left and right sidewall and the second contacts baseplate, side before and after first
The 3rd semi-open cuboid cavity of fixed composition is bolted with the left and right riser (5) in wall, the left and right riser (5)
End is flushed with the second left and right sidewall end, and fixation is bolted with the front and rear riser (6) in the first front-rear side walls, described
Left and right riser (5) forms the 4th semi-open cuboid cavity with the front and rear riser (6), and the end of the front and rear riser (6) is low
In the first front-rear side walls end.
2. a kind of shear box of rock mass discontinuity shearing performance test system as described in claim 1, which is characterized in that described
The inner bottom surface size of first semi-open cuboid cavity is identical with the second semi-open cuboid cavity outer bottom size.
3. a kind of shear box of rock mass discontinuity shearing performance test system as described in claim 1, which is characterized in that described
The size of left and right riser (5) is identical with the left and right madial wall size of the second semi-open cuboid cavity.
4. a kind of shear box of rock mass discontinuity shearing performance test system as described in claim 1, which is characterized in that described
Front and rear riser (6), left and right riser (5) and U-board (4) are respectively provided with various different sizes, to meet different sizes, different type rock
The direct shear test requirement of body structural fece sample.
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CN106290007B (en) * | 2016-09-28 | 2024-07-23 | 中国科学院武汉岩土力学研究所 | Rock stretching and compression double-sided shear test device and method |
WO2019114550A1 (en) * | 2017-12-11 | 2019-06-20 | 中国科学院地质与地球物理研究所 | Shear box for testing shear anisotropy of structural surface of rock body |
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CN107991172A (en) * | 2017-12-15 | 2018-05-04 | 浙江科技学院 | One kind is based on the more dimensional structure face shear box assemble methods of limited block combined type |
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