孤岛工作面开采动压危险区的矿震层析成像技术研究  

Study on Seismic Passive Tomography Technology During Mining Dynamic Risk Area in Isolated Coal Face

作　　者：陈凡[1] 曹安业[1] 李付臣[2] 赵永亮[2] 张贞良[2] CHEN Fan CAO Anye LI Fuchen ZHAO Yongliang ZHANG Zhenliang(Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining ＆ Technology, Xuzhou, Jiangsu 221116, China Baodian Coal Mine, Yanzhou Coal Mining Company Limited, Zoucheng, Shandong 273513, China)

机构地区：[1]中国矿业大学矿业工程学院深部煤炭资源开采教育部重点实验室,江苏徐州市221116 [2]兖州煤业股份有限公司鲍店煤矿,山东邹城市273513

出　　处：《矿业研究与开发》2017年第6期55-60,共6页Mining Research and Development

基　　金：国家自然科学基金面上项目(51674253);国家重点研发计划项目(2016YFC0801406);江苏高校优势学科建设工程资助项目(SZBF2011-6-B35)

摘　　要：论文针对鲍店矿103上02工作面厚硬岩层下孤岛开采存在的较高动压危险性,分析了该孤岛工作面厚硬覆岩结构特征,在应力与P波波速的试验关系模型基础上,建立了基于矿震层析成像探测的孤岛面动压危险性评价技术,构建了矿震层析成像探测动压危险的技术指标与判别准则,最后开展了现场应用。研究表明,103上02工作面为一非对称"T"型孤岛覆岩结构,长臂侧在工作面开采后会出现大尺度覆岩破断运动,动压危险性较高。通过103上02工作面开采过程中的矿震层析成像探测实践,该技术能够对孤岛面开采覆岩运动特征、动压危险性与危险区域做出有效、动态评价,强矿震活动的预警准确率较高。In this paper, in view of high dynamic risk during mining isolated coal face （LW10302） under hard-and-thick strata in Baodian Coal Mine, the structure characteristics of hard-and-thick strata were analyzed. Based on the experiment relation model of stress and P-wave velocity, the dynamic risk assessment technique for isolated coal face based on seismic passive tomography was proposed, and the technical indexes and criterions of passive tomography were constructed. Finally, the assessment tech- nique was verified by practical application. The results showed that the strata structure of LW10302 was a typical unsymmetri- cal isolated structure of ＂T＂ style, especially the long-arm strata would have a large-scale fractrure movement after the mining, and the dynamic risk on this side was relatively high. Through the tomography detection practics during mining LW10302, the technique was feasible to make effective and dynamic assessment on the characteristics of the rock movement, dynamic risk and risk regions, and had high pre-warning accuracy of strong tremors.

关 键 词：动压危险性 矿震 孤岛工作面 P波波速 层析成像 

分 类 号：TD324[矿业工程—矿井建设]