Simple cyclic shearing instrument of rock mass structure surfaces, and simple cyclic shearing test method of rock mass structure surfaces

A technology of structural surface and shear instrument, applied to shear anisotropy test of rock mass structural surface and surrounding rock lining contact surface, simple cyclic shear test of rock mass structural surface, simple cyclic shear instrument of rock mass structural surface field, which can solve problems such as inconvenient operation

Pending Publication Date: 2019-09-13
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the rock mass structural surface shearing devices can only realize the one-way direct shearing function. In order to realize the cyclic shearing process, it is necessary to reverse the shearing box or reset it manually to shear again. There is a lot of inconvenience in operation, and this inconvenience is more prominent in multiple cycle shearing

Method used

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  • Simple cyclic shearing instrument of rock mass structure surfaces, and simple cyclic shearing test method of rock mass structure surfaces
  • Simple cyclic shearing instrument of rock mass structure surfaces, and simple cyclic shearing test method of rock mass structure surfaces
  • Simple cyclic shearing instrument of rock mass structure surfaces, and simple cyclic shearing test method of rock mass structure surfaces

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Embodiment 1

[0036] A simple circular shearing instrument for a rock mass structural surface, comprising a fixed base plate 1, a first side plate 3 and a second side plate 4 are arranged on the fixed base plate 1, a slide plate 7 is placed on the fixed base plate 1, and the slide plate 7 is located on the first side Between the plate 3 and the second side plate 4, the lower shear box 9 is arranged on the slide plate 7, the upper shear box 8 is located above the lower shear box 9, the fixing seat of the fixed jack 14 is connected with the first side plate 3, fixed The telescopic end of the jack 14 abuts against one side of the upper shear box 8, the other opposite side of the upper shear box 8 abuts against one end of the retaining column 10, the other end of the retaining column 10 is connected with the second side plate 4, and the first tangential jack 12 The fixed base of the first side plate 3 is fixed, the telescopic end of the first tangential jack 12 is offset against one side of the ...

Embodiment 2

[0043] Utilize the simple cyclic shear instrument of rock mass structural surface described in embodiment 1 to carry out the cyclic shear test method of rock mass structural surface. Include the following steps:

[0044] Step 1. Process the rock blocks with structural planes collected on site into rock mass structural plane samples of 150×150×150 mm, and place the rock mass structural plane in the middle of the rock mass structural plane samples;

[0045] Step 2, put the rock mass structural surface sample into the upper shear box 8 and the lower shear box 9, the bottom of the rock mass structural surface sample is set in the lower shear box 9, and the upper shear box 8 is fastened on the rock mass At the top of the structural surface sample, the distance between the uppermost side of the rock mass structural surface and the bottom edge of the upper shear box 8 is 5 mm to 10 mm, and the distance between the lowermost side of the rock mass structural surface and the top edge of t...

Embodiment 3

[0052] Utilize the rock mass discontinuity surface simple and easy circular shear instrument that embodiment 1 records to carry out the shear anisotropy test method of rock mass discontinuity surface and surrounding rock-lining contact surface.

[0053] Step 1. Through three-dimensional scanning and 3D printing technology, a batch of samples with the same appearance and material parameters are restored and produced. The samples are rock mass structural surface samples or surrounding rock lining contact surface samples. The size of each sample is They are all square specimens of 150×150×150 mm in size. The rock mass structural surface or the surrounding rock lining contact surface is placed in the middle of the sample, and the rock mass structural surface or surrounding rock lining contact surface is uniformly marked on the left and right sides of the sample.

[0054] Step 2, put the sample into the upper shear box 8 and the lower shear box 9, the bottom of the sample is set in ...

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Abstract

The invention discloses a simple cyclic shearing instrument of rock mass structure surfaces, comprising a fixed bottom plate, wherein a first side plate, a sliding plate and a second side plate are arranged on the fixed bottom plate, a lower shearing box is arranged on the sliding plate, an upper cutting plate is located above the lower shearing box, a telescopic end of a fixed jack and a blockingcolumn respectively abut against the two sides of the upper shearing box, the telescopic end of a first tangential jack and the telescopic end of a second tangential jack respectively respectively abut against the two sides of the lower shearing box, and the telescopic end of a normal jack abuts against the top of the upper shearing box. The invention further discloses a simple cyclic shearing test method of rock mass structure surfaces, and a shearing anisotropy test method of surrounding rock lining contact surfaces, and the invention can be applied to cyclic shearing tests of the rock massstructure surfaces; and researches on the shearing anisotropy characteristics of the rock mass structure surfaces can be carried out.

Description

technical field [0001] The invention belongs to the field of rock and soil test devices, and in particular relates to a simple cyclic shear instrument for rock mass structural surfaces, a simple cyclic shear test method for rock mass structural surfaces, and a rock mass structural surface and surrounding rock lining Test method for shear anisotropy of contact surfaces. Background technique [0002] Under the action of earthquakes, seismic waves propagate from bottom to top, and the contact surfaces of rock mass structural surfaces, rock engineering linings and surrounding rocks will undergo cyclic shear sliding along the contact interfaces under the repeated action of seismic waves. In order to study rock mass structural surfaces, The mechanical properties of the surrounding rock-lining contact surface under cyclic shearing, and the analysis of the change law of the strength and deformation of the contact surface with the shear times and rates, etc., need to carry out cyclic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/32
CPCG01N3/32G01N2203/0005G01N2203/0025G01N2203/0048G01N2203/0075G01N2203/0676G01N2203/0682
Inventor 张茂础崔臻盛谦刘华
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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