陕西煤炭2026，Vol.45Issue(4)：132-136,5.DOI:10.20120/j.cnki.issn.1671-749x.2026.0423
高速铁路软岩隧道"三软"低透煤层群揭煤防突管理实践
Outburst prevention management of uncovering coal in"three soft"low-permeability coal seam group in soft rock tunnel of high-speed railway
李志红 1田紫微 1杨明1
作者信息
- 1. 四川省恒升晟睿勘察设计有限公司,四川成都 610031
- 折叠
摘要
Abstract
Aiming at the problem of excessively long outburst prevention duration(estimated to be 3～5 years)for coal un-covering in No.2 Adit Work Zone of Zhaotong Tunnel on the Yunnan-Guizhou Section of the Chongqing-Kunming High-Speed Railway,targeting the M1-7 to M1-9 coal seams,and in combination with the complex geological conditions of the work zone,including ultra-deep burial depth(900～950 m),high in-situ stress(maximum principal in-situ stress of 25.4～36.7 MPa),large deformation of soft rock,and"three-soft"coal seam groups with low permeability,an outburst prevention management system featuring precise detection,refined management,and systematic safety protection was established by in-tegrating the construction characteristics and industrial specifications of coal mining and railway tunnels.Field practice shows that the system has shortened the outburst prevention duration for coal uncovering to 10 months,achieved gas drainage of 288 000 m meeting relevant standards,and safely completed coal uncovering and excavation.The research verifies the ef-fectiveness of this refined management mode,which can provide a reference for outburst prevention in tunnel coal uncovering under similar complex geological conditions.关键词
瓦斯防突/安全管理/瓦斯抽放/精细化管理Key words
gas outburst prevention/safety management/gas extraction/refined management分类
矿业与冶金引用本文复制引用
李志红,田紫微,杨明..高速铁路软岩隧道"三软"低透煤层群揭煤防突管理实践[J].陕西煤炭,2026,45(4):132-136,5.
