Method for simulating roadway rock burst based on coaction of static load and blast load

A technology of joint action and rock burst, applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, instruments, etc., can solve the hidden dangers of normal operation of mine safety production projects, cannot fully simulate the mechanism of rock burst, Insufficient understanding of rock burst mechanism and other issues, to achieve the effect of reducing safety production risks, reducing damage, and avoiding injuries
CN103344491BInactive Publication Date: 2015-07-01NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
Publication Date
2015-07-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for simulating roadway rock burst based on coaction of a static load and a blast load. The method comprises the following steps of: A, selecting cement mortar and ramming a model in a rock model testing machine, and embedding a pressure sensor, an acceleration sensor and a strain gage in the model body; B, maintaining the model body within 28 days, applying initial crustal stress to the model body by utilizing the rock model testing machine, and testing force and deformation field distribution characteristics of the model body under the action of the static load; C, simulating actual cavern excavation characteristics, and measuring force and deformation field distribution characteristics in the model body after excavation each time; and D, drilling in the model body, mounting explosive cartridges and detonators in the drill bores, filling with loess, and detonating the explosive. By utilizing the method, the occurrence scale and time of deep roadway rock burst can be effectively predicted, damage of rock burst disasters on mine production settings can be reduced, the mine safety production risk is greatly reduced, and the production efficiency of the mine is greatly improved.
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Description

technical field

[0001] The invention mainly relates to the fields of deep resource mining, transportation, water conservancy and civil engineering industries, etc., and specifically relates to a method for simulating rock burst in a roadway under the joint action of static load and explosive load. Background technique

[0002] With the increase of the excavation depth of deep caverns in large mines, water conservancy, transportation, and national defense projects, more and more rock burst problems have emerged. Rock burst has caused more and more engineering accidents, which has brought great hidden dangers to mine safety production and normal operation of projects. Although extensive research on rock burst has been carried out around the world, the understanding of the mechanism of rock burst is still not deep enough, and further research is still needed. Model test is an effective method for simulating rock burst, but based on the results of field investigation and resear...

Claims

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