大采高工作面支架载荷的采厚效应分析  

Mining Thickness Effect Analysis of Loading of Support at Large Mining Height Working Face

作　　者：唐仁龙[1,2] 李龙清 丁自伟[1,2] 张杰[1,2] TANG Ren-long;LI Long-qing;DING Zi-wei;ZHANG Jie(School of Energy Engineering,Xi＇an University of Science and Technology,Xi＇an 710054,China;Key Laboratory of Western Mine Expoitation and Hazard Prevention and Control of the Ministry of Education,Xi＇an 710054,China)

机构地区：[1]西安科技大学能源学院,西安710054 [2]教育部西部矿井开采及灾害防治重点实验室,西安710054

出　　处：《煤炭技术》2018年第9期267-270,共4页Coal Technology

基　　金：国家自然科学基金项目(51504183;51774229);陕西省教育厅专项科学研究计划(17JK0486);能源学院青年教师创新项目(2210116004)

摘　　要：针对小保当煤矿2-2煤层的具体情况,通过物理相似模拟和数值模拟实验的方法对工作面顶板运移规律及支架工作阻力进行了研究。研究得出小保当煤矿大采高工作面来压期间,基本顶下位岩层形成了"悬臂梁"结构,来压强度均为中等,随着采高的增加,煤壁前方的应力集中现象更加明显,采高大于6.5 m时尤为明显,平均支架载荷随之增加,支架载荷的均方差也随之增大,支架载荷的大小更加离散化。According to the certain conditions of No. 2-2 seam in Xiaobaodang coal mine,by similar simulation and numerical simulation method study the roof movement laws and support working resistance. The results show that the lower basic roof appeared in the process of cantilever beam structure,the intensity of mine pressure is medium,with the increase of mining thickness, the stress concentration in front of the coal wall is more obvious, particularly when mining height are broken more than 6.5 m,average support load increase,also increase support load of standard deviation and the support load more discretization.

关 键 词：大采高工作面 支架工作阻力 悬臂梁 顶板运移规律 

分 类 号：TD355[矿业工程—矿井建设]