Impact Analysis of Rock Stress Distribution Caused by Spacing Between Return Airway and Gas Emissions Lane

摘要：

The spacing between gas emissions lane and return airway has a direct impact on the roadway maintenance and stress concentration caused by tunneling. Typically, the stress concentration will increase as the distance between roadway reduced, while the too large pillar width can reduce the emission effect which emanate from gob and emissions through gas emissions lane, at the same time too broad pillar means lower recovery rate, resulting in waste of resources, coal pillar also has effect in mining next level coal. In order to study an appropriate spacing between return airway and gas emissions lane which can control rock stress field around the stress at a reasonable size, reduce the risk of dynamic disaster occurred, reduce the fees of roadway construction and maintenance. In this article, the stress of various width of the pillar will be simulated according to Mohr — Coulomb plastic failure criteria using FLAC3D, in order to analyze the stress distribution and stress distribution of gob, determine a reasonable distance. this research is very important for improving the safety of roadway excavation and coal gas dynamic damage prevention.

关键词： numerical simulation stress distribution spacing

作者: LU You-chang WANG Ying-wei

作者单位: Gas Research Institute of Zhong Ping and Shen Ma Energy Chemical Group Pingdingshan 467000, China

会议类型: 国际会议

会议名称: The 2nd International Conference on Mine Safety and Environment Protection(第二届采矿、安全与环境保护国际会议)

会议地点: 西安

会议语种:英文

页码: 305-310

在线出版日期: 2011-10-10（万方平台首次上网日期，不代表论文的发表时间）