深部开采岩层及地表移动与冲击地压相关性基础研究

项目名称： 深部开采岩层及地表移动与冲击地压相关性基础研究

项目编号： No.51274132

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 矿业工程

项目作者： 郭惟嘉

作者单位： 山东科技大学

项目金额： 82万元

中文摘要： 深部岩体地球物理环境的特殊性和应力场的复杂性，导致深部煤层开采岩层与地表移动与浅部开采相比具有明显的差异。实践与初步研究表明，深部采动覆岩体结构形变演化及地表移动变形某些特征是冲击地压等动力灾害现象发生的重要表征信息，两者具有较大的相关性。本课题在前期研究基础上，基于深部开采岩体运动、力学特征及上覆岩层空间大结构演化形变规律，综合采用现场岩体内部采动微震、应力及形变响应探测和地表移动特征监测,结合室内大型相似结构模拟、机械模拟实验及岩体动力学数值模拟分析等方法，分析深井采动复合层状覆岩体结构形变与地表移动的动态演化规律，探讨岩体运动的动力学响应特征，研究覆岩结构形变与冲击地压孕育发生的能量聚集关系以及地表移动变形速率及变化与冲击地压发生频率和能量释放之间的关联性，为深部开采条件下矿井动力灾害前兆信息辨识提供一个新的思路与理论方法，为现场冲击地压的监测监控与防治提供一个有效手段。

中文关键词： 深部开采；岩层及地表移动；岩体结构演化；冲击地压；相关性

英文摘要： Rock and surface movement in deep mining is obviously different from that in shallow mining due to the special geophysical environment and complicated stress field of deep rock. The practice and preliminary research show that structural deformation evolution of overlying strata, and surface movement and deformation with great relevance in deep mining are important characterized information of dynamic disasters such as rock burst. Based on the mechanical characteristics of rock movement and deformation evolution of large structure in overlying strata in deep mining, evolution of structural deformation in straticulate overlying strata and dynamic law of surface movement in deep mines were analyzed, response characteristics of rock movement was discussed, and the impendent aggregate energy influence of rock burst from structural deformation of overlying strata and correlation between rate and change of surface movement and deformation, and frequency and energy release of rock burst will be studied comprehensively applying the methods of mining response detection of field rock and observation of surface movement, test research on similar material simulation by large-scale bed and theoretical analysis of rock dynamics. The study will provide a new research thought and theoretical method for identifying the precursory

英文关键词： deep mining；movement of strata and ground surface；structure evolution of rock mass；rock burst；correlation