Vol. 44 No. 4 Aug 2017
矿业安全与环保
MINING SAFETY & ENVIRONMENTAL PROTECTION
刘悦昕.坚硬项板工作面冲击地压监测预警技术[J].矿业安全与环保,2017,44(4)：60-63 文章编号：10084495(2017)04006004
第44卷第4期 2017年8月
坚硬顶板工作面冲击地压监测预警技术
刘悦昕
（北京中铁建安装工程有限公司，北京100040）
摘要：针对坚硬顶板和高应力的开采条件，提出了冲击地压远近场联合监测预警技术。采用 ARAMISM/E微震监测系统进行远场监测，对工作面开采过程中微震事件的时空演化规律进行分析，确定冲击地压预警指标6、")、M.、4(6）的值分别为0.58、1.52、2.32、7.85,建立联合指标对冲击地压进行预报。采用电磁辐射和煤体应力进行近场监测，确定工作面和两回采巷道电磁辐射强度预报值分别为154、131、136mV，结合煤体应力等值线的变化，对冲击危险性进行评价。应用实例表明，采用冲击地压远近场联合监测预警技术后，成功预测了数次冲击地压，取得了较好的预测效果。
关键词：坚硬顶板；冲击地压；监测预警；远近场联合监测；微震监测；电磁辐射
中图分类号：TD324
文献标志码：B
网络出版时间：2017-08-0314：45
网络出版地址：http：//kns.cnki.net/kems/detail/50.1062.TD.20170803.1445.030.html
Monitoring and Early Warning Technology for Rock Burst in Working Face
with Hard Roof
LIUYuexin
(Beijing CRCC Installation Co. , Lid. , Bejing I00040, China)
Abstract: Aiming at the mining conditions of hard roof and high stress, a combined monitoring and early warning uoo oy pen e asis uaoo asa esodrd se s pe a o oo of the far field, the time space evolution regularity of the microseismic events in the working face during coal mining was analyzed, the early warning indicalor §, ), M_and A (6) of the rock burst were determined to be 0. 58, 1. 52, 2. 32 and 7. 85 respectively, and a combined indicalor system was set up for the prediction of the rock burst. The electromagnetic radiation intensity and the coal body stress were used for the monitoring of the near field, the prediction value of the electromagnetic radiation intensity of the working face and its two gateways were detemined to be 154 mV, 131 mV and 136 mV respectively. The rock burst hazard was evaluated according to the the change of the coal boly contours. The application examples showed that several rock bursts were successfully predicted by using the combined monitoring and early warming technology of the near and far field of the rock burst, and the better prediction effect was achieved.
Keywords : hard roof; rock burst; monitoring and early warning; joint monitoring of near and far fields; microseismic monitoring: electromagnetie radiatior
我国煤炭开采的深度和强度在不断加大，冲击地压的发生越来越频繁，严重影响了煤矿安全生产和煤矿工人的人身要全。深部开采的工作面本身储存了较高级别的弹性应变能，在开采扰动下赋存有厚硬顶板的工作面将积聚的弹性势能以急剧猛烈的方式突然释放出来，形成的动载源在较高的能量基础上诱发冲击地压或矿震。因此，需要对冲击地压
收稿日期：2016-1118;2017-06-11修订
作者简介：刘悦昕（1975一），男（满族），高级工程师，主要研究方向为嵌入式系统、物联网。
· 60 万方数据
进行监测预警，有针对性地采取防治措施。
目前，国内外提出了多种冲击地压的监测预警技术，往往都是依靠单一指标，存在一定局限性(1-4]。笔者针对坚硬顶板和高应力的开采条件，提出了微震监测与电磁辐射、煤体应力监测相结合的冲击地压远近场空间多尺度联合监测技术，对冲击地压进
行全方位监测预警。 1工作面概况
工作面位于集贤矿中一区集中胶带道左侧，北部为居民区水塔及建兴村煤柱，南部为井田边界，西