底分层综放开采顶煤运移规律研究  

Movement Rule of Top-Coal with Sublevel Caving in Bottom-Slice

作　　者：翟新献[1,2] 李仕明 杜建鹏 李小军[1] 

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454000 [2]大连理工大学土木水利学院,辽宁大连116023 [3]义马煤业集团公司杨村煤矿,河南三门峡472300

出　　处：《采矿与安全工程学报》2009年第1期82-86,共5页Journal of Mining & Safety Engineering

基　　金：国家重点基础研究发展计划(973)项目(2007CB209400);国家自然科学基金重大项目(4063804/D0214);河南省教育厅自然科学基金项目(2008B440005)

摘　　要：针对杨村煤矿走向长壁底分层放顶煤开采具体地质条件,利用深基观测孔系统地观测了距煤层底板不同高度的煤层,以及顶板垮落岩层的位移与工作面煤壁距离之间的关系,得出了综放面顶煤始动点位置,以及煤壁前后方顶煤运移规律.将顶煤沿工作面推进方向依次划分为原岩应力区、弹性区、塑性区和散体区4个变形分区,实测了得到了各个分区范围,其中在塑性区内顶煤处于顶煤体的应力-应变全程曲线的峰后区,顶煤体属于损伤变形体.Based on specific geological condition of strike coal face with sublevel caving in bottom slice in Yangcun Coal Mine of Yima Coal Group,China,we use deep observation-boreholes to observe coal seams at different heights above floor and the relationship between the displacement of roof caving strata and the distance from coal face wall to observation points.By doing so,we obtained the position of initial movement of top-coal and the movement rule of top-coal in front and in rear of the coal face wall.Along the advancing direction of coal face,we divided the top-coal into four deformation zones,i.e.,initial stress zone,elastic zone,plastic zone,and loose zone and measured the range of each zone.Since the state of top-coal mass in plastic zone is in the post-peak zone of its stress-strain curve,the top-coal belongs to the damage and deformation body.

关 键 词：综放开采 顶煤 运移规律 底分层 

分 类 号：TD823.4[矿业工程—煤矿开采]