钱家营矿-850主石门区域防突工程地测保障措施分析

Geological Survey Safeguard Measure Analysis on Main Cross-hole Outburst Prevention Project in Qianjiaying Coal Mine

开滦集团钱家营矿-850主石门施工至774 m位置时,围岩来压明显。在超前探查5煤层赋存状况过程中,钻孔喷孔,瓦斯异常。为做好"防突"工作,钱家营矿在-850主石门区域优先开展了地测技术保障工作,具体有涵盖防突工程全周期的精密控制测量、疏水降压措施、地质及瓦斯地质详查等,构建了适合钱家营矿区域特点的防突技术支撑体系。

The surrounding rock pressure is obvious when the-850 main cross-hole in Qianjiaying Mine of Kailuan Group constructs to 774 m position. In the process of advanced exploration of the occurrence conditions in 5 coal seam, the holes are spray-ing and the gas is abnormal. In order to do a good job of＂outburst prevention＂, Qianjiaying Mine has carried out geotechnical safeguards work of-850 main cross-hole, including precision control measurement, dewatering and depressurization measures, geological and gas geology detailed investigation and so on, which constructs an outburst prevention technical support system suitable for the regional characteristics of Qianjiaying Mine.