THE MECHANISM OF ROCKBURST AND THE CONTROL COUNTERMEASURE IN DEEP-WELL TOUGH ROCK
Rockburst is a kind of dynamic buckling geologic disaster. The elastic strain energy, which is stored in the rock, is released suddenly while mining hard brittle rock under high stress. Rockburst results in relaxation, exfoliation, and ejection. It threatens the safety of the crew and equipment and often occurs in metal mines, but also arises in coal mining. Presently, domestic and foreign experts arc researching technology for the forecasting and control of rockburst. Though mechanisms of rockburst have been understood to a certain extent and preventive measures are adopted in practice, the problems of rockburst are not solved radically. Based on the geological conditions of the Dataijing coal pit in the Muchengjian coal mine of Beijing, calculations of stress distribution on the wall rock by the cusp model of catastrophe theory have been performed with research on the mechanism of rockburst in the Dataijing coal pit. Several countermeasures have been put forth to prevent rockburst: reasonable set up out of the tunnel, change of physical and mechanical properties, and stress conditions of wall rock, and improvement of explosion and supporting characteristics. It is a simple and effective measure that advance boreholes can release parts of the stress to prevent the rockburst.
YAO CHENG YONG-LI ZHANG YU-LIN MA
College of Mechanics and Engineering, Liaoning Technical University Fuxin, 123000, P.R., China
国际会议
The 7th International Symposium on Rockburst and Seismicity in Mines(2009年第七届国际岩爆与微振动性学术研讨会)
大连
英文
313-318
2009-08-21（万方平台首次上网日期，不代表论文的发表时间）