摘要
官地矿中六区3#煤3005工作面巷道断面在地应力的作用下,局部塌落极其严重,锚杆支护几乎无法控制巷道的变形。本文采用FLAC3D数值模拟对倾斜煤层巷道断面形状及其支护参数进行稳定性分析。结果表明:采用拱形巷道断面及其支护参数,巷道围岩破坏、垂直应力、垂直位移均有所减小,同比减小分别为48.2%、31.3%和55.7%。
Under the action of ground stress, the local collapse of roadway section of No. 3 coal 3005 working face in No. 6 area of Guandi Coal Mine is extremely serious, and the deformation of roadway can hardly be controlled by bolt support. In this paper, FLAC3D numerical simulation is used to analyze the stability of section shape and support parameters of inclined seam roadway. The results show that the failure, vertical stress and vertical displacement of surrounding rock are reduced by 48.2%, 31.3% and 55.7% respectively.
作者
刘佳伟
Liu Jia-wei(Shanxi Coking Coal Xishan Coal Electricity Group Guandi Coal Mine,Shanxi Taiyuan 03002)
出处
《山东煤炭科技》
2018年第10期70-72,共3页
Shandong Coal Science and Technology
关键词
倾斜煤层
数值模拟
巷道稳定
inclined coal seam
numerical simulation
roadway stability
