基于当量钻屑法的冲击地压监测预警技术研究及应用  

ROCKBURST MONITORING AND PRECAUTION TECHNOLOGY BASED ON EQUIVALENT DRILLING RESEARCH AND ITS APPLICATIONS

作　　者：曲效成[1] 姜福兴[1] 于正兴[1] 鞠红阳[2] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]北京科技大学信息工程学院,北京100083

出　　处：《岩石力学与工程学报》2011年第11期2346-2351,共6页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金资助项目(50774012);"十一五"国家科技支撑计划项目(2007BAK24B04);国家重点基础研究发展计划(973)项目(2010CB226803)

摘　　要：针对济三煤矿现场监测数据,通过分析和数值计算,建立钻屑量、支承压力以及钻孔应力的关系,在此基础上,研制冲击地压实时监测预警系统。通过应力测量代替钻屑量作为冲击地压危险性主要监测指标和实时监测工作面前方应力场的变化规律,实现冲击地压危险区及危险程度的实时连续监测预警。自主开发的分析预警软件可以实时显示随工作面推进的支承应力动态云图和测点应力柱状图,设定报警阈值,以判断危险区域及其危险程度,预报发生冲击地压的可能性。通过多个冲击危险矿井的应用,表明该系统能准确地预报冲击危险区及其危险程度,实现高冲击危险工作面的安全开采。By means of analyzing field monitored data and numerical calculation in jisan mine, the relationships of drilling crumbs, support pressure and drilling stress are established. Based on this, the real-time monitoring and precaution system of rockbursts is developed. By taking the stress measurement instead of drilling crumbs as main monitoring specifications and monitoring the change rules of stress field at the front of the work face, the continuous and real-time monitoring and precaution for the rockburst dangerous areas and danger severity could be implemented by the system. The self-developed precaution analysis software can display bearing stress dynamic contour and monitoring point stress column. Additionally, the dangerous areas and dangerous levels are estimated by setting the warning threshold value. So, the possible occurrence of rockbursts is predicted. By applying this monitoring and precaution system to some rockbursts mines, it is proved that the system can predict the precautions dangerous areas and dangerous levels accurately. In this way, the secure development of dangerous working faces with severe rockbursts can be done.

关 键 词：采矿工程 当量钻屑法 冲击地压 超前应力 监测预警 

分 类 号：TD32[矿业工程—矿井建设]