伊犁四矿浅埋深弱胶结砂砾岩顶板水害防治技术研究

Research on Shallow Buried Weak Cemented Gravel Roof Water Disasters Prevention and Control Technology

以伊犁四矿为背景,通过理论分析、现场实践等手段对浅埋深弱胶结砂砾岩顶板水害防治技术进行研究。结果表明:工作面发生突水溃沙需要同时满足水沙溃涌的物质基础和存在水沙流动的通道。对溃水溃砂风险和工作面排水系统进行评价,认为工作面局部区域仍存在溃水溃砂风险,且排水系统不够完善。矿山进一步疏放砂砾岩含水层的同时,需加强排水系统建设。

Based on the background of No.4 Mine of Yili,the prevention and control technology of water damage on shallow buried weak cemented sandy conglomerate roof was studied through theoretical analysis and field practice.The results show that the occurrence of water and sand inrush in the working face needs to meet the material basis of water and sand inrush and the channel of water and sand flow.The risk of water and sand inrush and the drainage system of the working face are evaluated.It is considered that there is still the risk of water and sand inrush in the local area of the working face and the drainage system is not perfect.When the mine further dredges the gravel aquifer,it is necessary to strengthen the construction of drainage system.