回采工作面断层附近岩石突出的数值模拟研究  

NUMEKICAL SIMULATION OF ROCKBURSTS IN VICINITY OF A FAULT IN THE WORKING FACE

作　　者：朱兴珊[1] 徐凤银[1] 

机构地区：[1]西南石油学院

出　　处：《山东矿业学院学报》1995年第3期23-27,共5页Journal of Shandong University of Science and Technology(Natural Science)

摘　　要：本文应用数值模拟方法研究了在矿压条件下回采工作面断层附近的应力和塑性区变化以及岩石冲击机理。采用了非线性平面应变模型；设计了不同断层带宽度、倾向和倾角以及不同应力状态的五种方案，利用ＡＤＩＮＡ有限元程序（模式７）进行计算，结果在明，断层破碎带造成的应力异常集中和塑性区突变是发生岩石冲击的根本原因。断层带宽度、倾向和倾角对岩石冲击危险性均具有较大的影响。ABSTRACT Change of stress and plastic zones and mechanism of rockburst in Vicinity of afault in the working fale under the effeet of ground pressure have been studied by means ofnumerical simulation method．The non-linear plane strain model has been used．There arefive plars tobedeeigned for the model with dibberent stress states and widths，dipsand dipan-gles of the fault，and calculated ty means of the ADINA Fem program（modc17）The resultsshow that the cardinal cause of rockbusts is sudden change of plastic zones and abnormalstress concentration resulting frorn the broken fault zone；the width，dip and dip angle of thefanlt zone also have a great effect on the rockburstsKEY WORDS working fale；geological faults；numerical simulation； non-linear mechan-ics；stress statesFREE WORDS rockburst；plastic zone；width of fault zone；dip of fault；plane strain；dip angle of fanlt

关 键 词：回采工作面 地质断层 数值模拟 煤矿 岩石突出 

分 类 号：TD823.97[矿业工程—煤矿开采]