摘要
以众维煤业大倾角综采面跨采岩巷为工程背景,采用理论分析、数值模拟、现场实测等方法,分析了大倾角采场底板应力传播路径及采动影响规律,将试验巷道分为弱采动影响区和强采动影响区,其中弱采动影响区包括采空区下端部工作面侧20 m以外的上部车场,强采动影响区包括弱采动影响区之外的上部车场和整条二采区回风平硐,据此开发了大倾角综采面跨采岩巷分区域加固技术,并进行了工业性试验,结果表明跨采岩巷围岩控制效果良好,可为类似矿井的巷道支护提供借鉴。
Taking Zhongwei coal industry large-dip fully mechanized mining face cross-mining roadway as the engineering background,using methods of theoretical analysis,numerical simulation and field measurement.The stress propagation path and influence law of mining in large dip stope floor are analyzed.The principle of regional reinforcement of cross-mining floor roadway is proposed.Test roadway can be divided into weak mining affected area and strong mining affected area,which the former including goaf bottom face side upper yard outside of 20 m,the latter including weak mining affected area outside of the upper yard,and the whole main return way.On this basis,the regional reinforcement technology of large dip angle fully mining face is developed.And the industrial test,the results show that the cross mining rock tunnel surrounding rock has been effectively controlled,the roadway support to provide reference for similar mines.
作者
马晓川
陈俊智
王捞捞
杨长德
MA Xiaochuan;CHEN Junzhi;WANG Laolao;YANG Changde(Key Laboratory of Green Mining of Coal Resources in Xinjiang,Ministry of Education,Xinjiang Institute of Engineering,Urumqi 830023,China;College of Mining Engineering and Geology,Xinjiang Institute of Engineering,Urumqi 830023,China;State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology,Xuzhou 221116,China)
出处
《煤炭技术》
CAS
北大核心
2023年第7期25-29,共5页
Coal Technology
基金
新疆维吾尔自治区高校科研计划自然科学项目(XJEDU2018Y052)
煤炭资源与安全开采国家重点实验室-新疆工程学院联合开放研究基金项目(SKLCRSM-XJIEKF005)
新疆工程学院科研基金项目(2020xgy232302)。
关键词
大倾角综采面
跨采岩巷
分区域加固
锚杆索支护
large inclined angle full mining face
floor roadway in crossing
regional reinforcement
bolt-cable support
