摘要
详细阐述了覆岩内部破坏分布特征与地表移动变形分布特征、垮落带高度、裂缝带高度和地表移动变形最大值计算与采动范围时空界定参数等;分析了煤层气地面钻井、井下高抽巷道和井下保护层等对采动岩层移动变形破坏的要求;基于岩层移动变形破坏时空规律,探讨了煤层气抽采井、巷和保护层位置设计原则。这些采岩层移动、变形和破坏规律可广泛应用于煤层气抽采技术,以提高煤层气抽采效率。
This paper introduced surrounding rock failure and surface movement characteristics, and rock-strata movement parameters including caving zone height, fissure zone height, maximum value of surface subsidence and mining influence range. Requirement of CBM surface drilling well, underground high-level drainage roadway and protective coal-seam for rock-strata movement and deformation. Location design principles for CBM drainage well, roadway and protective coal-seam were discussed on the basis of time-space variation rule of rock-strata movement and deformation which could be widely used in CBM drainage for improving drainage efficiency.
出处
《煤矿开采》
北大核心
2013年第2期3-6,共4页
Coal Mining Technology
基金
国家重大科技专项:两淮矿区煤与煤层气协调开发模式研究(2011ZX05064)
关键词
煤层气抽采
覆岩破坏
地表移动变形
设计原则
coal-bed methane drainage
surrounding rock failure
surface movement and deformation
design principle
作者简介
胡炳南（1960-），男，浙江金华人，研究员，天地科技股份有限公司开采设计事业部特殊采煤与矿区环境治理研究所副所长。
