采掘影响下巷道底板的破坏分析与底鼓治理  

Failure analysis and floor heave control of roadway floor under influence of mining

作　　者：刘玉卫 商铁林[3] 张亚峰[1] 龚剑 刘应然 王浩 Liu Yuwei;Shang Tielin;Zhang Yafeng;Gong Jian;Liu Yingran;Wang Hao(Zhengzhou University of Technology, Zhengzhou 450044, China;Research Institute of Engineering Technology of Zhengzhou Coal Group, Zhengzhou 450042, China;Energy Engineering School, Yulin University, Yulin 719000, China)

机构地区：[1]郑州工程技术学院,郑州450044 [2]郑煤集团工程技术研究院,郑州450042 [3]榆林学院能源工程学院,陕西榆林719000

出　　处：《黑龙江科技大学学报》2021年第5期546-553,共8页Journal of Heilongjiang University of Science And Technology

基　　金：国家自然科学基金项目(52064047);陕西省科技计划项目(2020SF-418)。

摘　　要：针对采掘活动影响下底板底抽巷变形、失稳等问题,以杨河煤业31采区31151和31171突出工作面的底抽巷为研究对象,通过钻孔探测、松动圈测试及数值模拟等方法,分析了31151底抽巷在掘进与回采期间巷道围岩应力、位移分布规律及底板破坏范围。研究表明:通过实测和数值计算得到底抽巷底板破坏深度约为4 m;在锚网索+底板锚杆联合支护下,巷道两帮最大移近量40 mm,顶底板最大移近量65 mm。该研究可有效控制巷道底鼓变形。This paper is an attempt to combat the challenges such as deformation and instability of floor gas drainage roadway subjected to the influence of mining activities.The study involves analyzing the distribution law underlying roadway surrounding rock stress and displacement and the range of floor failure during excavation and mining by taking as the research object the floor gas drainage roadway of 31151&31171 gas outburst working faces in No.31 mining area of Yanghe coal mine and by means of drilling detection,loose circle test and numerical simulation.The research shows that the floor failure depth of the gas drainage roadway is about 4 m according to measurement and numerical calculation;and the combined support of anchor bolt net cable+floor bolt allows for the maximum approach of 40 mm on the two sides of the roadway and the maximum approach of 65 mm on the roof&floor.The study could provide an effective control of the deformation of roadway floor heave.

关 键 词：采掘影响 底板破坏 回风巷道 底抽巷 底鼓 支护 

分 类 号：TD322[矿业工程—矿井建设] TD353