A Rock Shear Loading System

A loading system and rock technology, applied in the direction of applying stable shear force to test the strength of materials, instruments, measuring devices, etc., can solve the problem that the maximum shear loading force cannot reach a higher level, and the manufacturing cost and design cost of the test system increase , The maximum normal loading force and the maximum shearing loading force are difficult to reach a high level at the same time, so as to avoid the sealing problem of the shearing box, increase the maximum shearing loading force, and overcome the restrictive factors

Active Publication Date: 2019-11-29
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In addition, if the design maximum loading force of the loading system is set too large, the requirements for the material and structure of the overall loading frame of the test system will be higher, and the manufacturing cost and design cost of the test system will increase accordingly. The system is mainly for shear test, 1000kN is enough for the shear test machine
[0008] Due to the above problems, it is difficult to achieve a high level of maximum normal loading force and maximum shear loading force at the same time
In addition, the maximum shear loading force cannot reach a higher level in the shear test device alone

Method used

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  • A Rock Shear Loading System
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Examples

Experimental program
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Effect test

Embodiment 1

[0044] Type A rock shear loading system, including: a shear box for accommodating rock specimens, and a shear loading system for applying shear force to rock specimens;

[0045] The shear loading system includes two mutually staggered active loading ends 401 arranged in the shear box 200 to apply shear force to both sides of the rock sample. The active loading ends 401 are controlled by an active hydraulic system, and the active loading ends 401 are The piston chamber used by the hydraulic system to control the force exerted by the active loading end 401 is located inside the shear box, and the oil pipeline of the active hydraulic system passes through the shell of the shear box and is in sealing communication with the piston chamber.

[0046] The piston chamber and indenter part of the shear loading device are directly arranged inside the shear box, which improves the overall stability of the test structure and enables the maximum normal loading force and maximum shear loading...

Embodiment 2

[0051] Type B rock shear loading system, including: a shear box for accommodating rock specimens, and a shear loading system for applying shear force to rock specimens;

[0052] The shear loading system includes two mutually staggered active loading ends 401 arranged in the shear box 200 to apply shear force to both sides of the rock sample. The active loading ends 401 are controlled by an active hydraulic system 405, The piston chamber used by the active hydraulic system 405 to control the force exerted by the active loading head 401 is located inside the shear box, and the oil pipeline of the active hydraulic system 405 passes through the casing of the shear box and is in sealing communication with the piston chamber.

[0053] The rear end of the active loading head 401 is an active loading shaft 412, the active shaft includes a first active shaft portion 413 with a first diameter, and the side wall of the first active shaft portion 413 is slidably connected with the first ac...

Embodiment 3

[0070] The difference between this embodiment and embodiment one and two is:

[0071] C-type rock shear loading system, the shear box is divided into a left box body 301 and a right box body 302, the junction of the left box body and the right box body is used as the specimen entrance 303 for placing the rock specimen, and the left and right box bodies There are connecting pieces, specifically, connecting bolts 304 for fixed connection.

[0072]The shearing box includes a box housing part 201 and a shearing loading part for accommodating a shearing loading end and a corresponding piston chamber. The box housing part 201 and the shearing loading part are integrally structured.

[0073] The shear loading part may specifically include an active loading shaft 412 , a first active piston chamber 414 located behind the active loading shaft 412 , and a second active piston chamber 417 located in front of the active loading shaft 412 .

[0074] In the traditional shear box, the shear...

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Abstract

The invention discloses a shearing loading system for rock. The system comprises a shearing box and a shearing loading system body, wherein the shearing box is used for accommodating a rock sample; the shearing loading system body is used for applying a shearing force to the rock sample; the shearing loading system body comprises two mutually staggered initiative loading ends which are arranged in the shearing box and are used for applying the shearing force to the two sides of the rock sample; the initiative loading ends are controlled by an initiative hydraulic system; a piston chamber of the initiative hydraulic system used for controlling the initiative loading ends to apply the force is arranged in the shearing box; and an oil pipeline of the initiative hydraulic system is penetrated through a shell of the shearing box and is in sealing communication with the piston chamber.

Description

technical field [0001] The invention relates to the technical field of experimental measuring instruments, in particular to a rock shear loading system. Background technique [0002] In mining, nuclear waste disposal, water conservancy and hydropower, tunnels, slopes and other underground projects, fractured rock mass is a type of complex rock mass that is often encountered. Its strength and deformation characteristics are directly related to engineering design, construction and operation. Stability, and these properties have a significant time dependence. Shearing of fractured rock mass is often the main factor causing rock engineering accidents such as rock mass landslide, surrounding rock collapse, and underground engineering instability. Therefore, carrying out experimental research on the shear characteristics of rock fractures has important guiding value for the long-term stability of the entire rock mass engineering. [0003] The main parameters involved in the stre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/24
CPCG01N3/24G01N2203/0025G01N2203/0048
Inventor 杨典森陈卫忠王鲁瑀杨建平
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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