摘要
为了探究更为有效的散体帮控制方法,以柠条塔煤矿切顶留巷开采工业性试验为工程背景,分别设计了2种挡矸支护方案,并对2种方案支护条件下的散体帮移近量及侧向压力进行了对比分析。结果表明:挡矸支护采用墩式护帮支架比单体斜撑侧向压力小且控制巷旁侧向移近量效果明显。研究结果为切顶留巷开采过程中的散体帮变形控制提供了一种新的支护思路。
Based on the industrial test of cutting roof and retaining roadway mining in Ningtiaota Coal Mine, this paper designs two kinds of supporting schemes for retaining gangue, and compares and analyzes the deformation amount of bulk body and lateral pressure under the two supporting schemes. The results show that the lateral pressure of the pier support is smaller than that of the single oblique support and the effect of controlling the lateral displacement of the roadway side is obvious. The research results provide a new support idea for the deformation control of the loose side in the process of roof-cutting and retaining roadway mining.
作者
李帅
王宏宇
魏庆龙
侯世林
LI Shuai;WANG Hongyu;WEI Qinglong;HOU Shilin(Zhengzhou Coal Mining Machinery Group Co.,Ltd.,Zhengzhou 450000,China;State Key Laboratory for Geo-mechanics and Deep Underground Engineering,China University of Mining and Technology,Beijing 100083,China)
出处
《煤矿安全》
CAS
北大核心
2020年第1期56-59,共4页
Safety in Coal Mines
关键词
切顶留巷
厚煤层
挡矸支护
散体帮
移近量
cutting roof and retaining roadway
thick coal seam
retaining gangue support
granular
deformation amount
