低透气性煤层开采覆岩应力与变形特征实验分析  

Experiment analysis of overburden stress and deformation characteristics in low permeability coal seam mining

作　　者：张璐[1] 李海洲 刘国磊 ZHANG Lu;LI Haizhou;LIU Guolei(School ofArchitectural Engineering,Shandong University of Technology,Zibo 255049,China;School of Resources and Environmental Engineering,Mining Engineering Technology Research Institute,Shandong University of Technology,Zibo 255049,China)

机构地区：[1]山东理工大学建筑工程学院,山东淄博255049 [2]山东理工大学资源与环境工程学院矿山工程技术研究所,山东淄博255049

出　　处：《山东理工大学学报（自然科学版）》2020年第3期66-69,共4页Journal of Shandong University of Technology:Natural Science Edition

基　　金：山东省自然科学基金项目(ZR2016EL06,ZR201709200152);山东理工大学博士基金项目(4041413046,4041414025)。

摘　　要：以阳煤集团新景矿8~#煤层开采为工程背景,在工作面实际地质条件下,建立了工作面推进过程中顶板变形的相似模拟实验系统。分析了随着工作面的推进,上覆岩层应力、岩层结构的变形、移动与垮落特征以及对煤与瓦斯突出的影响。实验表明:在开切眼上方一定范围(约5~15 m)和工作面前方(约5~20 m)形成集中应力区,此范围内煤体应力增大,煤层透气性进一步降低,煤与瓦斯突出危险性增大。该结论可为煤与瓦斯突出的防治提供理论依据。Based on the engineering background of Xinjing Mine 8~# coal seam of Yangmei Group, a similar simulation experiment of roof deformation during the working face propulsion process is carried out. With the advancement of the working face under the actual geological conditions of the working face. The actual overburden rock stress, deformation, movement and slump characteristics of the rock stratum structure and the influence on coal and gas outburst are examined. The experiment shows that a concentrated stress zone is formed in a certain range above the open cut(about 5 to 15 m) and in front of the working face(about 5 to 20 m). In this range, the coal body stress increases, the coal seam permeability decreases further, and the risk of coal and gas outburst increases. This conclusion provides a theoretical basis for the prevention and control of coal and gas outburst.

关 键 词：煤层开采 相似实验 顶板变形 特征分析 

分 类 号：TB553[理学—物理]