大采长倾斜煤层工作面矿压分析及煤壁片帮控制技术研究  

Analysis of rock pressure and research on control technology of wall spalling in large mining long inclined coal seam working face

作　　者：杨党委 Yang Dangwei(No.10 Mines of Pingdingshan Coal Co.,Ltd.,Pingdingshan 467000,China;State Key Laboratory of Coking Coal Resources Development and Comprehensive Utilization,Pingdingshan 467000,China;School of Mechanical and Electrical Engineering,Pingdingshan College,Pingdingshan 467000,China)

机构地区：[1]平煤股份十矿,河南平顶山467000 [2]炼焦煤资源开发及综合利用国家重点实验室,河南平顶山467000 [3]平顶山学院机械与电气工程学院,河南平顶山467000

出　　处：《能源与环保》2023年第10期295-300,共6页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国家自然科学基金青年基金(52104219)。

摘　　要：针对平煤股份十矿深部大采长倾斜煤层开采过程中出现的矿压显现剧烈、煤壁片帮严重等制约工作面安全高效生产的难题,以该矿己15-16-24070工作面为工程背景,从倾斜煤层开采过程中基本顶岩层来压步距和工作面采场应力集中分布进行分析,得到矿压呈现出自上而下逐渐变小的趋势,中部来压较为剧烈,确定煤壁易片帮区域。提出采用智能供液系统提高液压支架初撑力管理水平、对煤壁注水提高煤体塑性的采煤工作面煤壁防片帮方案,并在现场工业性试验中取得了较好的效果,回采速度由原来的圆班推进2~3刀提高到6刀以上,对于类似条件下采煤工作面煤壁片帮治理具有较好的指导和借鉴意义。In view of the problems that restrict the safe and efficient production of the working face,such as severe rock pressure appearance and serious coal wall spalling,in the mining process of deep inclined coal seams with large mining long in Pingdingshan No.10 Coal Mine.This paper took theⅥ15-16-24070 working face of the mine as the engineering background,and analyzed the basic roof rock pressure step distance and the stress concentration distribution of the working face in the mining process of inclined coal seams.The rock pressure showed a trend of gradually decreasing from top to bottom,and the pressure in the middle was more intense,so the area where the coal wall was prone to wall spalling was determined.This paper put forward a scheme of preventing wall spalling in coal face by using intelligent liquid supply system to improve the management level of hydraulic support′s initial setting force and by injecting water into the coal wall to improve the plasticity of the coal body,and achieved good results in the field industrial test.The mining speed increased from 2~3 knives to more than 6 knives by the original round shift,which had a good guidance and reference significance for the treatment of coal wall spalling under similar conditions.

关 键 词：倾斜煤层 煤壁片帮 应力集中 自动补压 煤层注水 

分 类 号：TD323[矿业工程—矿井建设]