Triaxial impact ground pressure true simulation test system

A simulation test system, technology of impact ground pressure, applied in the direction of testing material strength by using one impact force, testing material strength by applying stable tension/compression, etc.

Inactive Publication Date: 2013-12-25
SHANDONG UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is currently no equipment that can satisfy the above three conditions at the

Method used

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  • Triaxial impact ground pressure true simulation test system
  • Triaxial impact ground pressure true simulation test system

Examples

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Embodiment Construction

[0019] combined with figure 1 and 2 , a ground shock compaction triaxial simulation test system is characterized in that it includes a flexible loading unit, a confining pressure loading unit and an impact loading unit.

[0020] The flexible loading unit includes a base 1, a loading cylinder 2, a servo oil source, a loading backing plate 3, a reaction plate 4, and a reaction steel strand 5; one end of the loading cylinder 2 is supported on the base 1, and the other end is on the test Part 6 applies an axial load; the left and right sides of the reaction force plate 4 are respectively provided with through holes for connecting the reaction force steel strands 5; there are multiple reaction force steel strands 5, and one end of any one is fixed on the base, It is fixed on the counter force plate and is used to exert counter force on the counter force plate, and it will not produce a supporting effect when the counter force plate 4 is impacted. When the test piece 6 is damaged, ...

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Abstract

The invention discloses a triaxial impact ground pressure true simulation test system. The triaxial impact ground pressure true simulation test system is characterized by comprising a flexible loading unit, a confining pressure loading unit and an impact loading unit, wherein the flexible loading unit is used for applying vertical pressure on a test piece through a loading oil cylinder and a counterforce steel strand, the confining pressure loading unit is used for enabling the test piece to be under the condition of triaxial stress, the impact loading system is used for applying impact load on the test piece, the test piece is destroyed under the conditions of high stress and impact disturbance, the strength of the test piece is reduced, the test piece generates a certain displacement, in the process, the counterforce steel strand in the flexible loading unit is used for quickly supplementing load to the test piece, and further the extrusion and the action of external surrounding rocks to coal and rock masses are simulated. The triaxial impact ground pressure true simulation test system can be used for well simulating the occurring conditions of impact ground pressure, and the triaxial loading conditions are especially applicable to the simulation of gravity type impact ground pressure in a mining roadway.

Description

technical field [0001] The invention relates to the research on the law of rock burst occurrence in deep engineering, in particular to a true triaxial simulation test system for rock burst. Background technique [0002] Rockburst refers to the fact that the coal rock mass under high ground stress is damaged by the roof fracture or blasting disturbance around the coal mine roadway or mining face, and is further and rapidly squeezed by the surrounding rock during the destruction process, and is released instantaneously. A mine dynamic phenomenon in which huge energy causes destruction. It is often accompanied by loud noises, coal and rock mass being thrown into the mining space and air waves, etc., causing damage to the support equipment in the mining space and deformation of the mining space, causing casualties and damage to the mine and roadway in severe cases, and even causing surface subsidence cause local earthquakes. [0003] Rock burst is an important problem faced by...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01N3/30
Inventor 蒋宇静吴学震王刚刘传正
Owner SHANDONG UNIV OF SCI & TECH
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