大倾角采场矸石充填量化特征及覆岩运动机制  

The quantitative filling characteristics of the waste rock and roof movement mechanism in the steeply inclined working face

作　　者：王红伟[1,2] 伍永平[1,2] 解盘石[1,2] 李延军 曹沛沛[2] WANG Hongwei WU Yongping XIE Panshi LI Yanjun CAO Peipei(Key Laboratory of Western Mine Exploitation and Hazard Prevention Ministry of Education, Xi＇an University of Science and Technology, Xi＇an, Shaanxi 710054, China School of Mineral Engineering, Xi＇an University of Science and Technology,Xi＇an, Shaanxi 710054, Chin Institute of Hydrogeology, Xi＇an Research Institute of China Coal Technology ＆ Engineering Group Corp, Xi＇an, Shaanxi 710054, Chin)

机构地区：[1]西安科技大学西部矿井开采及灾害防治教育部重点实验室,陕西西安710054 [2]西安科技大学能源学院,陕西西安710054 [3]中煤科工集团西安研究院水文地质研究所,陕西西安710054

出　　处：《中国矿业大学学报》2016年第5期886-892,922,共8页Journal of China University of Mining & Technology

基　　金：国家自然科学基金项目(51204132);陕西省教育厅专项科学研究计划项目(2016JK1491);陕西省青年科技新星支持计划项目(2015KJXX-36);陕西省自然科学基础研究计划项目(2016JQ5019)

摘　　要：为了揭示大倾角煤层开采矸石非均匀充填对采场围岩控制的作用,基于大量的工程实践和实验研究,分析了大倾角采场矸石分区充填量化特征及其作用下顶板破坏内在机制,得出了各充填区域长度和充填作用下基本顶垮落长度的量化公式,并以枣泉煤矿120210工作面为工程实例,通过相似模拟实验和矿压监测验证了其合理性.结果表明:大倾角煤层长壁开采工作面垮落矸石沿倾斜滑移充填呈现下部充填压实、中部完全充填、上部部分充填的分区特征,形成对覆岩变形、破坏和运移的非对称约束效应,导致围岩破断运移具有明显的时序性和不均衡性,顶板垮落形态向上部区域偏移.In order to reveal the control effect of the non-uniform filling of the waste rock on the surrounding rock in the steeply inclined working face, the quantitative filling characteristics of the waste rock and the related roof failure mechanism were analyzed based on plenty of engineering practices and experimental research. The formulas for calculating the length of each filling portion and the caving spacing of the main roof were presented. The rationality of these calculations was verified through the physical similar simulation and field observation on the working face 120210 in Zhaoquan coal mine. The results show that there are three different filling zones along the inclined working face, which include the compacted zone at low areas, the complete filled zone at central areas, and partially filled zone at top areas. This filling characteristics, provided the asymmetric constraint effect to the overburden rocks, result in the obvi- ous time sequence and unbalance property of the rock movement, and move the caving configuration of the roof to the upper region.

关 键 词：大倾角煤层 分区域充填 垮落步距 时序性 非均衡性 

分 类 号：TD323[矿业工程—矿井建设]