马坑外围矿区ZK7924孔施工难点及对策

Construction Difficulties in ZK7924 Hole of Surrounding Mining Area of Makeng

摘要:

重点介绍马坑外围矿区ZK7924钻探技术难点，阐述了冲洗液、护壁堵漏、相关技术参数及水泥浆替水量的计算方法，顺利完成了该钻孔的施工。

Abstract:

The paper mainly introduced the drilling technical difficulties in ZK7924 hole of surrounding mining area of Makeng and the successful construction; described the flushing fluid, wall protection and leakage control, the correlating technical parameters and the calculation methods of water exchange amount of cement slurry.