冲击矿压巷道围岩控制的强弱强力学模型及其应用分析  

Strong-soft-strong mechanical model for controlling roadway surrounding rock subjected to rock burst and its application

作　　者：高明仕[1] 窦林名[1] 张农[1] 王恺[1] 郑百生[1] 

机构地区：[1]煤炭资源与安全开采国家重点实验室中国矿业大学,江苏徐州221008

出　　处：《岩土力学》2008年第2期359-364,共6页Rock and Soil Mechanics

基　　金：国家自然科学基金项目(No.50490270,No.50474068,No.50674085);国家重点基础研究专项项目(No.973)(No.2005CB221504);“十一五”国家科技支撑计划(No.2006BAK04B02,No.2006BAK03B06);教育部新世纪优秀人才支持计划(No.NCET-06-0478);中国矿业大学科技基金资助项目(No.2006B002)

摘　　要：根据巷道冲击震动破坏的原因和机理,建立了冲击矿压巷道围岩稳定性控制的强弱强(3S)结构力学模型,分析了该力学模型防冲抗震机理,在结构自身强度、应力转移和吸收、变形及能量耗散等方面分别表现出不同的3S特征,并推导得到了巷道支护体内强小结构发生冲击震动破坏的应力判据和能量准则。最后,对该模型在工程中的应用做了理论分析,提出要通过减小外界震源载荷、合理设置弱结构、提高支护强度等措施来防范巷道冲击矿压动力灾害。Rock burst may result in tremendous hazards in coal mining, such as sudden roof falling or even abrupt closing and jamming of roadway. According to the mechanism of roadway destruction by rock burst, a strong-soft-strong （3S） structural model to prevent rock burst from taking place was established and analyzed. The result shows that the 3S structural model has several characters, such as strength character of the structure itself, stress adjustment, wave absorbing, deformation and anti-deformation, energy consuming, etc.. Stress criterion and energy rule of the small inner support structure destroyed by rock burst were deduced. At last, based on the 3S model, the engineering application was theoretically discussed; several techniques such as decreasing shock energy, setting proper soft structure, and improving support strength were put forward to prevent roadway from being destructed by rock burst.

关 键 词：采矿工程 冲击矿压 巷道围岩控制 强弱强(3S)力学模型 应用分析 

分 类 号：TU451[建筑科学—岩土工程]