徐州矿区煤层合层开采技术实践  

Technology Practice of Combined Coal Seams Mining in Xuzhou Mining Area

作　　者：王直亚[1] 

机构地区：[1]徐州矿务集团有限公司,江苏徐州221006

出　　处：《煤矿安全》2015年第2期143-145,共3页Safety in Coal Mines

摘　　要：受成煤前的沉积环境的影响,造成了煤层生成厚度的变化、煤层与岩层交替生成、煤层尖灭、合并等各种现象。徐州矿区赋存条件复杂多变,部分煤层存在层间相近或合层的状况,约占总储量22%左右。在此类煤层回采过程中,煤层的厚度、硬度和夹矸的厚度、硬度对回采工艺的选择起到决定性因素。徐矿对该类煤层的开采进行了多种模式的探索,积累了一定理论基础和实践经验。Influenced by depositional environment of the coal,it causes the change of coal seam thickness,alternating generation of coal seam and rock strata,coal pinching out and merging and other phenomena.The occurrence condition of Xuzhou Mining Area is complicated,and part of coal seams are close seams or combined coal seams,which is about 22% of the total reserves.In the process of this kind of coal mining,coal seam thickness,hardness and thickness of dirt band and the hardness choice play a decisive factor for mining technology.Xuzhou Mining Group explores a variety of patterns for the coal seam mining,which has a certain theoretical basis and practical experience.

关 键 词：夹矸 合层开采 回采方案 分叉 支护 冒放性 

分 类 号：TD322[矿业工程—矿井建设]