复杂采空区段高速公路地质选线与勘察控制探索OA
Exploration on Geological Route Selection and Investigation Control for Highway Sections in Complex Mined-out Areas
本文以某高速公路为背景,开展大量专题研究,通过煤层采空区专项调查、综合物探技术、隧道风险评估及钻探工作进行不断反馈和相互验证.鉴于各区段地质概况和物探技术适用范围,对路基、隧道工点分别采用新型超高密度电法和大地电磁法进行探测和成果研判.在某隧道的八个重大安全风险源(洞口失稳、溶洞洞害、坍方、涌突水(泥)、瓦斯灾害、采空区塌陷、结构失效、运营火灾)基础上,确定隧道单一风险事件及整体初始风险等级和残留风险等级,应用隧道安全风险评估成果指导地质选线工作.
Taking a specific expressway project as a case study,this paper conducted extensive specialized research.Iterative feedback and mutual validation were achieved through dedicated investigations of coal seam mined-out areas,integrated geophysical prospecting techniques,tunnel risk assessments,and drilling operations.Considering the geological characteristics of different sections and the applicable scope of geophysical methods,novel super-high-density electrical methods and magnetotelluric methods were employed respectively for subgrade and tunnel site detection and interpretation.Based on the identification of eight major safety hazards for a specific tunnel(portal instability,karst cave hazards,collapse,water/mud inrush,gas disasters,goaf subsidence,structural failure,and operational fire),this paper determined the initial and residual risk levels for individual risk events and the overall tunnel structure.The findings from the tunnel safety risk assessment were then applied to guide geological route selection.
孔维伟
四川大学水利水电学院,成都 610065||山区河流保护与治理全国重点实验室,成都 610065||四川省公路规划勘察设计研究院有限公司,成都 610041
交通工程
复杂山区高速公路地质选线煤层采空区调查勘探风险评估方案比选
complex mountainous areashighwaygeological route selectioncoal seam mined-out areasinvestigation and explorationrisk assessmentscheme comparison and selection
《路基工程》 2026 (4)
22-28,7
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