陕西煤炭2026，Vol.45Issue(3)：132-136,5.DOI:10.20120/j.cnki.issn.1671-749x.2026.0322
地下运煤通道施工对上部高速公路影响研究
Construction impact of underground coal transportation roadway on upper expressways
宁志勇 1潘昌荣 2王刘文3
作者信息
- 1. 贵州水城矿业股份有限公司汪家寨煤矿,贵州六盘水 553000
- 2. 贵州省煤矿设计研究院有限公司,贵州贵阳 550025
- 3. 贵州煤设地质工程有限责任公司,贵州贵阳 550025
- 折叠
摘要
Abstract
To ensure the stability of overlays and structures is a necessary prerequisite for the construction of underground coal transportation roadway.Taking underground a coal transportation roadway under an expressway as the engineering back-ground,field investigation,theoretical analysis,numerical simulation and other methods are used to carry out in-depth re-search.The results show that the surrounding rock mass of the underground coal transportation roadway is grade V,and the quality of the rock mass is poor.The section form of the underground coal transportation roadway is selected as a straight wall three-center arch,its specification is 5.4 m × 3.8 m(width × height),and it adopts molded concrete support,C35 con-crete waterproof erosion grade.The local broken section can adopt anchor net spray support,U-shaped steel shed,grouting and other strengthening supports.Through qualitative analysis and quantitative calculation of empirical formula,the minimum safe depth is 50 m.The underground coal transportation roadway is a deep buried tunnel,and the comprehensive maximum displacement of overlying highway piers is 0.092 mm and that of highway pavement is 0.085 mm during construction,which is far less than the standard requirements.Thus,the construction of underground coal transportation roadway has little influ-ence on the upper expressway.关键词
地下运煤通道/岩体质量/数值模拟/影响分析Key words
underground coal transportation roadway/rock mass quality/numerical simulation/impact analysis分类
矿业与冶金引用本文复制引用
宁志勇,潘昌荣,王刘文..地下运煤通道施工对上部高速公路影响研究[J].陕西煤炭,2026,45(3):132-136,5.
