摘要
为有效降低高速铁路岩溶隧道运营期间水害风险,针对泄水洞及衬砌结构设计两个重大原则问题,根据风险事件发生的概率和后果分析,充分考虑风险控制措施的可靠性,基于岩溶发育宏观规律性强和微观规律性差的基本特点,提出"加强排水为主、加强衬砌为辅"的指导原则,勘察设计阶段,根据岩溶隧道的地层岩性、地质构造、地形地貌、水文地质特征等岩溶宏观发育规律进行总体设计,水害风险高的岩溶隧道应设置泄水洞且应提前施工;施工阶段根据岩溶微观探测成果进行具体岩溶整治,岩溶水发育段应加强排水措施,并有针对性地设置横通道、集水廊道、排水涵管等将岩溶水引排至泄水洞,隧道衬砌采用钢筋混凝土结构进行加强,以实现风险可控、技术先进、经济合理的目的。
In order to effectively reduce the risk of water disaster during the operation of high-speed railway karst tunnel,for the two major principles of the design of the drainage tunnel and lining structure,according to the probability and consequence analysis of risk events,fully considering the reliability of risk control measures,based on the basic characteristics of strong macroscopic and poor microscopic regularity of Karst,the paper puts forward“strengthening drainage mainly and lining auxiliarily”as the guiding principle.In the stage of survey and design,the overall design is based on the macroscopic law of karst such as lithology,geological structure,landform,hydrogeological characteristics,etc.The drainage tunnel should be set in the karst tunnel with high risk of water disaster.In the stage of construction,the karst treatment is based on the microscopic detection of karst,drainage measures should be strengthened in the areas of rich karst water.Cross passage water,collection gallery and drainage culvert should be set contrapuntally to discharge karst water to the drainage tunnel.Reinforced concrete structure should be used to strengthen the tunnel lining,to realize the purpose of controllable risk,advanced technology and reasonable economy.
作者
张磊
杨昌宇
钟昌桂
邸成
ZHANG Lei;YANG Changyu;ZHONG Changgui;DI Cheng(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,Sichuan,China)
出处
《水利水电技术》
北大核心
2020年第S01期44-48,共5页
Water Resources and Hydropower Engineering
关键词
风险管理
岩溶
泄水洞
衬砌结构
risk management
karst
drainage tunnel
lining structure
