大同“两硬”条件综放开采合理支架架型的选择探讨  

The suitable powered supports selected for “dual hard” excavated condition caving longwall worlface in Datong

作　　者：刘钧[1] 

机构地区：[1]大同煤矿集团公司云岗矿,山西大同037017

出　　处：《华北科技学院学报》2005年第4期19-21,共3页Journal of North China Institute of Science and Technology

摘　　要：通过分析大同矿区“两硬”条件下(坚硬顶板、坚硬煤层)厚煤层综放开采时液压支架架型与顶煤回收率及顶板控制影响,提出在两硬条件原煤层放顶煤开采时,应考虑顶煤放煤参数和煤量的要求,在选择综放支架掩护梁角度时,要充分考虑放煤高度和支架顶梁长度、掩护梁长度、后部输送机宽度等,要考虑支架顶梁对顶梁的破坏作用和坚硬顶板的来压特点。对类似顶板条件下的综采开采有参考作用。Based on the “dual hard” excavated condition （hard roof and hard coal seams） in Datong, a suitable powered support type is selected to be sure high top coal recovery and roof control in longwall caving workface. This type powered support can be applied in similar mining condition in China.

关 键 词：坚硬顶板 坚硬厚煤层 放顶煤开采 液压支架 

分 类 号：TD355.4[矿业工程—矿井建设]