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Laboratory three-dimensional dynamic rock crushing test system and method

A three-dimensional dynamic and test system technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, instruments, etc., can solve the problems that rock breaking experiments cannot be used, deep rock breaking can not be used, and high stress environments cannot be simulated. , to achieve the effect of reducing the impact and easy operation

Active Publication Date: 2021-06-01
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the constraints of the experimental equipment, the rock-breaking laboratory research is carried out under the condition of no confining pressure using the dynamic loading method. At present, there are almost no studies that can simulate high-stress conditions by adding confining pressure.
Such as CN104749052 A, CN 104237484 A, CN 104297049 A and CN 104198311 A are all in the open environment of normal pressure and cannot simulate high stress environment, so conventional rock breaking devices cannot be used to study deep rock breaking problems
[0004] The current rock-breaking experimental device can only perform one of static pressure or rock-breaking, and cannot perform rock-breaking experiments while measuring rock mechanical properties under static pressure

Method used

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  • Laboratory three-dimensional dynamic rock crushing test system and method

Examples

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Embodiment 1

[0045] A laboratory three-dimensional dynamic rock crushing test system and method, the steps of which are:

[0046] Step 1. Move the pressure chamber into the lifting guide rail, install the stopper, remove the fixing bolts between the upper part of the pressure chamber and the base, lift the upper part of the pressure chamber with the boom device, and place the prepared diameter 50mm and height 100mm. Put the rock specimen in the rubber sleeve, install the lower end of the rubber sleeve above the reserved hole in the base of the pressure chamber, lower the upper part of the pressure chamber from the cantilever device, and fix the bolts of the upper part of the pressure chamber and the base of the pressure chamber to seal the experimental chamber ;

[0047] Step 2, install the in-line chisel head on the 25KN actuator as a dynamic load loading tool, the dynamic load simulation type is impact, mechanical tunneling, etc. After installation, put the pressure chamber under the sen...

Embodiment 2

[0057] A laboratory three-dimensional dynamic rock crushing test system is composed of a main engine, a functional device, an electro-hydraulic servo axial loading system, a measurement control system, a computer control and data processing system, etc.; The boom device is composed of a lifting guide and a small cylinder. The main frame adopts an integrally cast integral door frame structure. The boom is hinged on the upper left side of the main frame and can rotate horizontally. The lifting guides are located on both sides above the base of the main frame. Four small cylinders are installed on the base of the lower host, the guide rail is installed in front, and the stopper is placed between the lifting guide rail and the guide rail; the functional device includes a self-balancing triaxial pressure chamber, a servo-controlled confining pressure loading device, and a self-balancing triaxial pressure chamber base Located above the main frame, there are two pulleys on each side o...

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Abstract

The invention belongs to the technical field of laboratory mechanical rock breaking, and particularly relates to a laboratory three-dimensional dynamic rock breaking test system and method. The laboratory three-dimensional dynamic rock breaking test system comprises a host, a functional device, an electro-hydraulic servo axial loading system, a measurement control system, a computer control and data processing system and the like, and is reasonable in structure. The test system and method are simple and convenient to operate, can be used for simulating mechanical property test research of crushing of natural rocks, artificial concrete and granular compaction and consolidation test pieces under the condition of high stress of various dynamic loads such as impact and mechanical tunneling; according to the test system, a conventional mechanical experiment and a rock breaking experiment under the dynamic confining pressure condition can be achieved, and loading of an axial (3000KN) static pressure actuator and loading of an axial (25KN) servo actuator do not affect each other; the rock breaking direction in the experiment is downward, rock debris generated by rock breaking can automatically fall off, and the influence on stress, displacement and the like in the simulated rock breaking experiment is reduced; and real-time dynamic fracture positioning and damage parameters are obtained.

Description

technical field [0001] The invention relates to the technical field of laboratory mechanical rock breaking, in particular to a laboratory three-dimensional dynamic rock breaking test system and method. Background technique [0002] With the needs of national economic construction and national defense security, the exploitation of deep underground resources and the development and utilization of underground space are increasing day by day. Underground energy storage, deep geological disposal of high radioactive nuclear waste, exploration and exploitation of minerals, oil and gas, civil engineering, water conservancy and hydropower The utilization of underground space is constantly going deep, and the characteristics of high in-situ stress of underground rock mass are becoming more and more obvious. As the confining pressure increases, the physical and mechanical properties of the rock change, whether the traditional rock breaking method can effectively break the high surroundi...

Claims

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Application Information

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IPC IPC(8): G01N3/12G01N3/02
CPCG01N3/12G01N3/02
Inventor 孙强李清杨德明张宇菲刘勇李岩
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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