高速铁路隧道喀斯特发育区处理关键技术研究

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【中图分类号】：U455.49 【文献标志码】：A 【文章编号】：1008-3197（2025）05-37-05

【DOI编码】：10.3969/j.issn.1008-3197.2025.05.009

Research on Key Technology of Karst Development Zone Treatment in High-speed Railway Tunnel

WANG Bingyan，ZU Xiaoying

（ChinaRailway15th Bureau Group 5th Engineering Co.，Ltd.，Tianjin ，China）

【Abstract】：As acommon special bad geology，karst is very easy to cause surrounding rock deformation and tunel collapse in tunnel construction，which has a serious impact on engineering safetyand later line operation safety. In this paper，anew high-speed railway tunnel in Jilin Province is taken as anexample.The geological radar is usedto detect the hidden karst in the karst tunnel section.According tothe development degree of karst， the construction and disposal technology of karst cave and karst fissure is formulated.The karst tunnel section is treated by adding protective wall，strengthening tunnel support parameters ，advanced grouting support， karst cavity backfilling，backfiling grouting and other measures.At the same time，the numerical simulation of the disposal scheme is carried outto analyze the stresscharacteristics of surrounding rock and tunnel structure.In the construction process，real-time monitoring is strengthened，and the development oflava is continuouslydetected，whichverifies theconstructiondisposal efectand effectively ensures the smooth implementation of the project.

【Key words】： karst;tunnel;high-speed railway

喀斯特洞穴将围岩切割成不连续的地质体，降低围岩强度，在新建隧道的掘进穿越过程及与运营列车动荷载的叠加作用下造成岩层应力场变化，支护结构受力不均，影响列车的行车安全。（剩余4422字）