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废弃煤矿积水对相邻煤矿的威胁分析
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作者 吴玉川 李磊 《科学技术创新》 2020年第18期154-156,共3页
定量分析废弃煤矿积水对防止废弃煤矿积水对相邻煤矿造成危害具有重要意义。本文以闭坑矿井和邻近矿井九里山矿为研究对象,利用回采空间法计算了闭坑矿井27采区的积水量,得到闭坑后采空区积水量为235572.555m^2,并利用数理统计方法对闭... 定量分析废弃煤矿积水对防止废弃煤矿积水对相邻煤矿造成危害具有重要意义。本文以闭坑矿井和邻近矿井九里山矿为研究对象,利用回采空间法计算了闭坑矿井27采区的积水量,得到闭坑后采空区积水量为235572.555m^2,并利用数理统计方法对闭坑矿井的水位和水量变化进行分析,发现矿井水位回升速度与水量相关;并对邻近14142工作面的防隔水煤柱进行安全评价,结合两种计算方法对需留设的隔水煤柱宽度进行计算,判断出隔水目前煤柱可以抵挡住27采区的积水水压。 展开更多
关键词 废弃矿井 积水 水位回升 防隔水煤柱 积水水压
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老空透水事故抢险救援方案与钻孔救援探析 被引量:1
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作者 毛振西 毛小鸥 《中国煤炭》 北大核心 2016年第12期122-124,共3页
老空透水事故是近年来煤矿水害事故的主要类型,通过分析透水事故救援案例认为,了解煤矿安全监控系统数据变化是分析透水后井下态势和制定抢险救援方案的基础,明晰老空区积水水压是制定井下排水和地面钻孔救援方案实施步骤的关键,同时,... 老空透水事故是近年来煤矿水害事故的主要类型,通过分析透水事故救援案例认为,了解煤矿安全监控系统数据变化是分析透水后井下态势和制定抢险救援方案的基础,明晰老空区积水水压是制定井下排水和地面钻孔救援方案实施步骤的关键,同时,在井下排水过程中配合使用压风系统送气能够扩大受困人员生存空间,为救援赢得时间。 展开更多
关键词 透水事故 监控系统 积水水压 井下排水 钻孔救援 压风系统
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Stability Analysing of Unsaturated Soil Slope 被引量:1
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作者 张士林 邵龙潭 《Journal of China University of Mining and Technology》 2003年第1期55-59,共5页
The stability of unsaturated soil slope has been the hot point recently. Especially, the seeping rainfall makes losing stability of unsaturated soil slope, and causes enormous loss to the producation and safety of oth... The stability of unsaturated soil slope has been the hot point recently. Especially, the seeping rainfall makes losing stability of unsaturated soil slope, and causes enormous loss to the producation and safety of other people. The seeping rainfall makes volumetric water content of unsaturated soil slope changing, and the volumetric water content has directly relationship with matric suction. And matric suction also has directly relationship with the stability of unsaturated soil slope. So the change of matric suction influence the stability changing, that is, safety coefficient has decided relationship with volumetric water content. The profile of dangerous volumetric water content curves of unsaturated soil slope has been obtained. If a volumetric water content curve of some unsaturated soil slope belongs to one of these dongerous curves, the unsaturated soil slope could be in danger. So this is called DVWCCP(dangerous volumetric water content curves profile). By monitoring the volumetric water content curves can obtain the stability information of some soil slope to serve producing and safety. 展开更多
关键词 unsaturated soil stability analysis seeping rainfall volumetric water content matric suction DVWCCP
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