薄煤层群开采切顶巷防冲技术相似模拟

详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文

英文篇名：Similar Simulation on Rock Burst Prevention of Cutting Roof Roadway in Thin Coal Seam Group Mining 中文刊名：煤矿安全 英文刊名：Safety in Coal Mines 作者：齐宏伟 ; 秦涛 ; 刘永立 ; 冯俊杰 英文作者：QI Hong-wei1 ; QIN Tao2 ; LIU Yong-li2 ; FENG Jun-jie1 (1.Qitaihe Branch of Longmei Group ; Qitaihe 154600 ; China ; 2.Heilongjiang Institute of Science and Technology ; Harbin 150027 ; China) 中文关键词：冲击地压 ; 薄煤层 ; 切顶巷 ; 顶板弱化 英文关键词：rock burst ; thin coal seam ; cutting roof roadway ; roof weakening 出版日期：2013-05-20 机构：龙煤集团七台河分公司;黑龙江科技学院; 年：2013 期：05 出版单位：煤矿安全

摘要

基于相似模拟试验对工作面回采工程中应力变化和顶底板运动情况进行的分析,得出工作面开采可能导致其上超过50 m范围内产生矿震现象,工作面前方10 m范围内应力集中急剧增加;由于切顶巷的弱化作用,使采空区悬顶长度减小,有效降低了前方煤体应力;随着切顶巷间距减小,顶板破断步距也相应减小,但如果间距过小又会导致切顶巷之间应力集中,经综合分析,得出切顶巷理想间距为15～30 m。
The stress change and roof and floor movement of working face during mining is anlyzed based on similar simulation test.Working face mining could lead to mine earthquake in the range of more than 50 m above the face,the stress concentration rapidly increase in ahead of working face of 10 m.Because of weakening action of cutting roof roadway,the length of hanging goaf is reduced,and the coal stress ahead is effective decreased.With the decrease of distance between cutting roof roadways,the roof strata breaking step decreases correspondingly,however the stress would increase with too short distance.The reasonable distance between cutting roof roadways is 15 m to 30 m according to the comprehensive analysis.

引文

[1]徐学峰.煤层巷道底板冲击机理及其控制研究[D].徐州:中国矿业大学,2011.
    [2]窦林名,何学秋.冲击矿压防治理论与技术[M].徐州:中国矿业大学出版社,2001.
    [3]宋大军.薄煤层微冲击矿压研究[J].煤矿现代化,2009(S1):21-22.
    [4]窦林名,赵从国,杨思光,等.煤矿开采冲击矿压灾害防治[M].徐州:中国矿业大学出版社,2006.
    [5]李铁,蔡美峰,蔡明.采矿诱发地震分类的探讨[J].岩石力学与工程学报,2006,25(z2):3679-3686.