摘要
当拟建隧道工程无法绕避采空区而采用下穿方案时,因其地质问题较多,勘察设计应尤为谨慎,以防施工期发生重大变更增加造价甚至影响建设运营安全。选取东南沿海地区某市政道路隧道实例,以采空区空间分布、采空区底部地层稳定性以及采空区积水性质与来源作为勘察要点详细分析积水采空区对隧道围岩分级的影响,针对性地提出了解决建议,对该隧道及类似隧道的建设具有一定的参考和指导作用。
When the proposed tunnel project can not avoid the goaf,due to many geological problems,the survey and design should be particularly cautious,in order to prevent major changes in the construction period,increase the cost and even affect the construction and operation safety.Taking a municipal road tunnel in southeast coastal area as an example,taking the spatial distribution of goaf,the stability of stratum at the bottom of goaf and the source of water in goaf as the key points of survey,this paper analyzes in detail the influence of water-filled goaf on the classification of tunnel surrounding rock,and puts forward corresponding suggestions,which has a certain reference and guiding role for the tunnel construction.
出处
《福建建设科技》
2021年第6期35-37,共3页
Fujian Construction Science & Technology
关键词
积水采空区
隧道勘察
地质问题
Water-filled Goaf
Tunnel exploration
Geological problems
