中南大学学报（自然科学版）2011，Vol.42Issue(9)：2774-2782,9.
大埋深高地压弱结构面顶板岩层诱发冲击地压离心模型试验
Centrifuge model tests on rock brusting induced by great depth highly stressed roof strata of weak structural plane
摘要
Abstract
For the problem of rock busting of three coals intended to be exploited nearly 1 km depth of Zhaolou Mine, considering the actual situation of the fault cutting roof, the geological model of weak structural plane was built and centrifuge model tests were conducted. The results show that the direct roof weighting process has comparatively low pressure on coal pillar, whereas the main roof weighting process has more significant influence on it, which is the primary power origin of rock bursting. In the context where the roof is cut by faults, the integrity of roof strata is damaged, stress redistributes at construction site, tectonic stress concentration is formed which is dangerous position inducing rock brusting. Footwall roof loses support from coal body and then transforms into cantilever beam after the extracting working face exposes the faults, thus the support intensity of the roof greatly reduces, and it is prone to occur rock brusting produced by sudden rupturing roof. Thick to hugely thick roof and extremely hard roof are easy to form rock brusting in this structure. The research provides an important reference for rational arrangement, reinforcement and mining rock brusting of roadway of Zhaolou Mine.关键词
大埋深/弱结构面/离心模型/冲击地压Key words
great depth/ weak structural plane/ centrifuge model/ rock brusting分类
矿业与冶金引用本文复制引用
段宏飞,姜振泉,朱术云,孙强,刘德乾,杨伟峰..大埋深高地压弱结构面顶板岩层诱发冲击地压离心模型试验[J].中南大学学报（自然科学版）,2011,42(9):2774-2782,9.基金项目
国家青年科学基金资助项目(40802076) （40802076）
中国矿业大学青年科研基金资助项目(2009A029):江苏省博士后基金资助项目(1001047C) （2009A029）
