复杂煤岩体结构动力失稳多参量预报方法研究  

Multi-parameter forecasting method of dynamic destabilization of complex coal and rock mass structure

作　　者：曹建涛[1,2] 来兴平[1,2] 崔峰[1,2] 单鹏飞[1,2] 杨毅然[1,2] 

机构地区：[1]西安科技大学能源学院,陕西西安710054 [2]教育部西部矿井开采及灾害防治重点实验室,陕西西安710054

出　　处：《西安科技大学学报》2016年第3期301-307,共7页Journal of Xi’an University of Science and Technology

基　　金：国家自然科学基金(煤炭联合基金)重点项目(U13612030);陕西省重点科技创新团队计划(2013KCT-16);博士启动基金(2014QDJ069);博士培育基金(2014051)

摘　　要：针对煤岩体在开采扰动影响下由于动力载荷的作用将发生复杂的运动演化过程,形成新的更为复杂的煤岩体结构。煤岩体结构所受的应力水平变化特异,煤岩体结构在高应力强卸荷作用下结构发生严重畸变,出现煤岩体结构动力失稳、冲击地压、大面积片帮和大体积冒顶等动力失稳现象,且煤岩体结构动力失稳始终随着采动煤岩层的时空演化而发生着动态运动,危险源产生的位置、时间具有不确定性,存在自由面的煤层、采场、巷道、掘进工作面等围岩结构空间都有发生动力失稳的可能,因此导致了动力失稳危险源的搜索范围广泛、定位难度较大,采用单一手段难以满足监测预报的要求。本论文基于能量积聚和释放的围岩结构动力失稳前兆信息研究,利用应力、应变、声发射、钻孔窥视等声、光、电监测手段,通过多参量信息的综合分析,提出复杂煤岩体结构动力失稳多参量动力失稳预测方法。Due to the dynamic loading caused by exploitation,the structure of coal and rock mass has become more complex. Great deformation generated under high stress and strong unloading particularly when encountered large variation of stress level. Phenomenons such as dynamical destabilization of structure,rockburst,wall caving and roof falling etc maybe occur on this account. The dynamic change of dynamic destabilization in structure of coal and rock mass coupled with temporal and spatial evolution of exploitation area,and the location and formation time is uncertain. Locations such as coal seam,stope,roadway and working face etc are very likely to be dangerous zones,resulting that the dynamical destabilization source hard to locate. Therefore,it is unable to meet the requirement of monitoring and prediction with single-parameter forecasting method. This paper employs monitoring measures such as stress-strain,acoustic emission（ AE）,borehole imaging and photoelectric,based on the study of message produced before dynamic destabilization by energy accumulation and release. By means of synthetical analysis of multi-parameter message,we have proposed a multi-parameter forecasting method of dynamic destabilization of complex coal and rock mass structure.

关 键 词：复杂条件 煤岩体结构 开采扰动载荷 动力失稳 

分 类 号：TD823[矿业工程—煤矿开采]