摘要
为解决深部冲击危险工作面震动波反演周期长、射线覆盖率低、结果不可靠的技术难题,提出采用主、被动震动波一体化波速反演技术对工作面冲击危险区域进行监测预警。基于SIRT算法,对监测区域进行波速反演并分析应力分布情况,大大缩短反演周期,利用该技术的预警指标快速获得冲击危险区域。以安居煤矿2309工作面为例,提出单日波速CT反演与连续六日波速CT反演相比较的方法,深入研究深部冲击危险工作面回采期间应力分布规律。研究结果表明:工作面回采期间,该技术准确预判工作面内高应力分布区域,确定冲击危险等级。结合现场钻孔检验,验证了该技术反演预警的准确性,应用效果良好。
In order to solve the technical problems of long inversion period,low ray coverage and unreliable results in deep mine working face with rockburst hazard,the integrated wave velocity inversion technology using active and passive seismic wave is proposed to monitor and early warn the burst hazard. Based on SIRT algorithm,the wave velocity inversion is carried out in the monitored area and the stress distribution is analyzed. The inversion period is greatly shortened and the early warning index of the technology is used to quickly obtain the burst hazard area. Taking the 2309 working face of Anju Mine as an example,the single day wave velocity CT inversion is compared with continuous six day wave velocity CT inversion,and the stress distribution law of deep mine working face with burst hazard during mining is studied. The research results show that during the working face mining,the technology can accurately predict the high stress distribution area in the working face and determine the rockburst hazard level. Combining with the field drilling test,the accuracy of the inversion and early warning of the technology is verified,and the application effect is favorable.
作者
郭林生
李成海
王继超
赵慧杰
巩思园
马志锋
GUO Lin-sheng;LI Cheng-hai;WANG Ji-chao;ZHAO Hui-jie;GONG Si-yuan;MA Zhi-feng(Shanxi Binchang Mining Group Company Limited,Binzhou 713500,China;State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology,Xuzhou 221116,China;Xuzhou Hongyi Science and Technology Development Company Limited,Xuzhou 221008,China;Jining Mining Industry Group Company Limited,Jining 272000,China;Yanzhou Coal Mining Company Limited,Zoucheng 273500,China)
出处
《煤炭工程》
北大核心
2021年第2期74-79,共6页
Coal Engineering
基金
国家自然科学基金资助项目(51874292,51934007)。
关键词
冲击危险工作面
震动波
反演预警
应力分布
危险区域
working face with rockburst hazard
shock wave
inversion warning
stress distribution
rockburst hazard area
