关于深部带压开采底板突水特征的研究分析  

Research and analysis of water inrush characteristics of floor in deep belt pressure mining

作　　者：王玉和[1] 李春朋 崔增斌 Wang Yuhe;Li Chunpeng;Cui Zengbin(College of Mining and Safety Engineering,Shandong University of Science and Technology,Qingdao,266590,China)

机构地区：[1]山东科技大学能源与矿业工程学院,山东青岛266590

出　　处：《煤炭与化工》2021年第4期50-53,56,共5页Coal and Chemical Industry

摘　　要：随着煤层开采进入深部,其突水频率和突水危险性逐渐增加,为了研究深部煤层开采底板岩层突水特征,以邯邢矿区九龙矿15252工作面为背景,利用理论分析、数值模拟和现场实测进行研究,结果显示,煤层进入深部开采其底板采动破坏带和承压水导升带均比浅部开采时大,且深部开采底板突水具有滞后性;深部开采时底板承压水随着工作面的推进具有横向渗流性,底板突水通道形成位置易发生在含水层边角位置,其突水通道形态呈“倒八字形”;利用瞬变电磁进行现场探测其结果与理论分析和数值模拟基本吻合;在相同地质条件下在深部开采形成底板突水事故,在浅部开采条件下不易形成底板突水事故,同时提出注浆加固封堵突水通道的防治水措施。研究结果为深部煤层开采底板突水防治提供参考。As coal seam mined into the deep,the frequency of water inrush and the water inrush risk gradually increased,in order to study the characteristics of deep mining floor water-irruption,with mining area as the background of Jiulong Mine 15252 working face of Xinghan mining area,with theoretical analysis,numerical simulation and in-situ test are studied,the results showed that the deep mining of coal seam mining damage zone and the base plate confined water conductivity belt were bigger than the shallow mining,and deep mining floor water-irruption was lag;In deep mining,floor confined water had transverse percolation along with the advance of working surface,and the formation of floor water inrush passage was prone to take place at the corner of aquifer,and its water inrush passage is shaped as"inverted八shape".Transient electromagnetic field detection results were in good agreement with theoretical analysis and numerical simulation results.In the same geological condition,floor water inrush accident is formed in the deep mining,but it was not easy to form floor water inrush accident in the shallow mining condition.The research results can be used for reference for coal mining under the same geological conditions.

关 键 词：深部开采 滞后性 横向渗流性 瞬变电磁探测 

分 类 号：TD745[矿业工程—矿井通风与安全]