摘要
矿区隔水围岩隔水安全性能分析与评估是矿区深部开采设计的依据,对于矿山开拓系统的选择及安全生产具有重要作用。以贵州省林歹铝土矿为例,针对魏家寨矿段地下延伸开采遇到的涌水问题,重点研究矿区二叠系下统梁山组隔水岩层和石炭系摆佐组弱透水岩层组合成的复合式隔水围岩的隔水安全性能,并评价其在林歹铝土矿深部开采的隔水效果。评价结果表明：梁山组和摆佐组组合成的复合式隔水围岩具有良好的隔水性能,能在矿山延伸开采过程中有效阻止下部栖霞-茅口组灰岩含水层中的承压水涌入矿坑,防止突水事故的发生。本研究使矿山的呆矿复活,为矿山挽救了161×10~4 t深部铝土矿资源,并可为类似矿山的建设与生产提供借鉴。
Safety performance analysis and evaluation of aquiclude are the basises of deep mining design,which play important roles in mine exploiting system selection and safety production.This paper takes Lindai bauxite mine in Guizhou as a case study.To solve mine water inrush of Weijiazhai ore block during underground mining,the paper investigates the waterproof properties of combined water-resisting surrounding rock consisting of the lower Permian Liangshan group water-resisting layer and the Carboniferous Baizuo group aquitard,and evaluates its waterproof effectiveness in deep mining of Lindai bauxite.The results show that the combined water-resisting surrounding rock has a good waterproof performance,can effectively prevent confined water of the lower Qixia—Maokou group limestone aquifer flowing into mine pits during deep mining,and avoid mine water inrush accidents.This study makes161×10~4 t of deep bauxite resources available,and will provide beneficial reference for the construction and production of similar mines.
出处
《安全与环境工程》
CAS
2016年第3期107-112,118,共7页
Safety and Environmental Engineering
基金
国家自然科学基金项目(41072180)
关键词
铝土矿
复合式隔水围岩
隔水安全性能评价
安全厚度
bauxite mine
combined water-resisting surrounding rock
waterproof safety performance evaluation
safety thickness
