大采深厚表土复杂空间结构孤岛工作面冲击地压防治 技术研究

doi:10.11779/CJGE201401020

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摘要厚表土层覆盖下的深埋不规则孤岛工作面覆岩空间结构复杂多变,顶板运动剧烈,该类孤岛工作面在受到大采深和地质构造等因素的影响下,极易发生冲击地压。以某矿不规则深井孤岛工作面为工程案例,首先对工作面冲击危险性进行分析评价,通过开采前进行的模拟推进,采用覆岩空间结构理论,分析得到了高应力区域,确定了冲击危险区域和危险程度；采用应力在线监测系统进行冲击危险性实时预报,钻屑法进行危险性检验；采取钻孔卸压和爆破卸压措施对危险区进行处理,有效的保证了复杂空间结构下孤岛工作面的安全回采。

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	杨光宇
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	王存文

关键词 ：覆岩空间结构, 厚表土层, 孤岛工作面, 冲击危险性, 应力在线监测, 卸压爆破, 煤层注水

Abstract：The spatial structure of overlying strata of deep irregular island face under thick topsoil is complex, and the movement of its roof is drastic. Mine bumping in this kind of isolated island is easy to occur under the influence of mining depth and geological structure. Through a case study of one deep mine irregular island face project, safe mining of this island face is ensured through the following steps: firstly, the hazard of mine pressure bumping is evaluated, based on the simulations by mining before advancing and the strata spatial structure theory; secondly, the on-line stress monitoring system and drilling cuttings method are adopted for risk inspection and forecast; finally, the technology of drilling and blasting pressure releasing is adopted to deal with dangerous areas. Based on this study, the safe mining of this complex spatial structure is effectively guaranteed.

Key words： overlying stratum spatial structure thick topsoil isolated working face hazard of mine pressure bumping on-line stress monitoring pressure releasing blasting seam water injection

收稿日期: 2013-08-06

TU43

基金资助:国家自然科学基金项目（51174016,51274022,51204010）; 国家重点基础研究发展计划(973)项目（2010CB226803）

作者简介: 杨光宇(1990- )，男，陕西铜川人，硕士研究生，主要从事冲击地压监测与治理方面的研究。E-mail: ustb_guangyu@163.com。

引用本文:

杨光宇, 姜福兴, 王存文. 大采深厚表土复杂空间结构孤岛工作面冲击地压防治技术研究[J]. 岩土工程学报, 2014, 36(1): 189-194. YANG Guang-yu, JIANG Fu-xing, WANG Cun-wen. Prevention and control technology of mine pressure bumping of coal mining face in seam island based on deep mining and thick topsoil of complex spatial structure of overlying strata. Chinese J. Geot. Eng., 2014, 36(1): 189-194.

链接本文:

http://manu31.magtech.com.cn/Jwk_ytgcxb/CN/10.11779/CJGE201401020 或 http://manu31.magtech.com.cn/Jwk_ytgcxb/CN/Y2014/V36/I1/189

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