“定向分支钻探”技术在煤矿陷落柱治理中的应用
Application of “Directional Branch Drilling” Technology in the Treatment of Coal Mine Collapse Column

煤矿陷落柱是煤炭开采过程中经常遇到的不良地质构造之一，是一种特殊的导水通道。为了减少陷落柱对煤矿生产安全的危害，杜绝水害事故，确保在过陷落柱时的采掘安全，本文以金桥煤矿的一处岩溶陷落柱为研究对象，创新性地将石油领域“定向分支钻探”技术应用于陷落柱探查治理中，详细介绍了“定向分支钻探”技术应用于煤矿陷落柱治理中的施工设计、主要技术措施等。应用结果表明，“定向分支钻探”技术能实现对煤矿陷落柱发育位置及导水情况的精准探查，有效解决水害威胁，从而增加矿井可采资源储量，创造巨大经济效益。研究结果为煤矿陷落柱的防治提供了技术方案支撑，同时为煤矿采掘过程中陷落柱防隔水煤(岩)柱的设计提供了重要依据。
Coal mine collapse column is one of the bad geological structures often encountered in the process of coal mining, and it is a special water channel. In order to reduce the harm of collapse column to the safety of coal mine production, prevent water disaster accidents, and ensure the safety of mining when passing through the collapse column, this paper takes a karst collapse column in Jinqiao Coal Mine as the research object, and innovatively applies the “directional branch drilling” technology in the oil field to the exploration and treatment of collapse column. The construction design and main technical measures of “directional branch drilling” technology applied to the treatment of coal mine collapse column are introduced in detail. The application results show that the “directional branch drilling” technology can realize the accurate exploration of the development position and water conductivity of the coal mine collapse column, and can effectively solve the threat of water damage, thus increasing the reserves of mine recoverable resources and creating huge economic benefits. The research results can provide technical support for the prevention and control of coal mine collapse column, and provide data basis for the design of collapse column water proof coal (rock) column in the process of coal mining.