极近距离煤层下层煤采场顶板结构与控制  

Roof structure and control in the lower seam mining field in the ultra-close multiple seams

作　　者：朱涛[1] 张百胜[1] 冯国瑞[1] 张绪言[1] 康立勋[1] 

机构地区：[1]太原理工大学矿业工程学院,山西太原030024

出　　处：《煤炭学报》2010年第2期190-193,共4页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(50704024);山西省青年科技研究基金资助项目(2007021024);太原市技术创新计划资助项目(0803003);太原理工大学校科技发展基金;矿业启明星计划资助项目

摘　　要：为进一步发展顶板岩层控制技术,针对极近距离煤层开采时下层煤的顶板岩层结构特点,构建了"散体-块体"顶板结构模型。运用散体和块体理论,对极近距离煤层下层煤工作面下位直接顶岩层结构的稳定性进行了力学分析,揭示了下层煤开采时端面顶板冒落的机理。以下层煤顶板岩层结构和工作面支架载荷为研究对象,通过力学分析研究了工作面的支架载荷,得出了支架载荷的确定方法,在此基础上以大同矿区极近距离煤层为研究对象,通过现场实测进一步论证了该方法的客观性与实用性。In order to develop quantitative technique of the roof control, in accordance with the roof structure character- istic of the lower seam mining in the ultra-close multiple seams, the ＂loosen-blocky＂ roof structure model was con- structed. The stability of the lower immediately roof structure was analyzed in the lower seam mining in the ultra-close multiple seams by the loosen and blocky theory, the roof falling mechanism was expounded in the lower seam mining. The roof structure of the lower seam and the support load in workface were regarded as object of study, the support load in workface was researched by mechanics, the confirmed method of support load was obtained. On the basis of the above achievements, the ultra-close multiple seams of Datong mining area was regarded as object of study, the objectiv- ity and practicability of this method were made further demonstration by on-site practical measurement.

关 键 词：极近距离煤层 岩层结构 顶板控制 稳定性 

分 类 号：TD823.81[矿业工程—煤矿开采]