覆岩破坏裂缝探测技术的新进展

离层注浆技术是近几年提出的控制开采沉陷的新方法,尽管这一方法在多个矿区进行了应用,取得了一定的效果,但由于缺少对离层位置等的准确描述,使得注浆效果难以控制,从而影响了该技术的推广应用.介绍了覆岩破坏探测技术新的发展,为采煤造成的覆岩离层位置的探测提供了新的观测方法.重点介绍了应用较为成功的几项新的探测方法,包括利用EH4电导率成像系统探测地层构造和覆岩破坏形态;用钻孔彩色电视系统观测覆岩中裂缝形态和宽度.

New development on probing and measuring technology for failed cracking of overburden rock

The grouting technology for separated layer is a new method to control the mining ground subsidence in recent years. Although method has been applied to many coal mines with certain results, due to lack of the correct statement on the location of the separated layer, it is hard to control the grouting results, which could be influence to the application of the technology. In the recent years, there is a new development of the probing and measuring technology for overburden rock failed. The new development of the technology can provide the new monitoring and measuring method to probe and measure the location of the overburden rock in coal mining. The paper emphasized the introduction of several new probing and measuring methods applied in the recent years, including the EH-4 electric conducted rate image system to probe and measure the strata structure and overburden rock failed state and the borehole color TV system to view and measure the cracking and width in the overburden rock.