栾川钼矿采空区钻探技术试验研究

Experimental Study on Drilling Technology in Molybdenum Mine Mined-out Area

摘要:

针对栾川钼矿地质结构复杂、地下采空区交错纵横，采空区底板凹凸不平开孔困难，普通钻进容易造成钻孔偏斜的情况，为解决矿区面临的勘探技术难题，研究试验了以潜孔锤反循环钻探技术为核心，集成多种先进的钻探机具，采取人工造孔法、下套管导向法或实时控制参数法等钻探工艺，顺利在采空区底板打孔并钻穿多层采空区，取得了良好效果。

Abstract:

According to the complex geological structure in molybdenum mine of Luanchuan with crisscross underground mined-out areas and uneven mining floor, experimental research was made on drilling equipment integrated various advantages which took reverse circulation DTH hammer drilling technology as the core to solve the exploration difficulties in this mining area. The artificial hole-making, casing guiding, or real time parameter control methods were adopted, the construction was completed with good effects.