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岩溶灾害严重危及隧道施工的安全,影响施工的进度,是目前国内外隧道建设面临的重点和难点问题。首先对马鹿箐隧道历次涌突水特征进行了分析,分别介绍了超前地质预报技术、水文观测、反坡追排水清淤技术和泄水释能工法等技术在+978溶腔的岩溶水处治中的应用,针对+978溶腔的揭示过程及揭示后溶腔内的状况进行了详细描述,最后对溶腔揭示后采用的帷幕注浆加固地层及全断面管棚技术及桩基承台跨越溶腔等工程处治措施进行了详细介绍。马鹿箐岩溶隧道成功的施工处治经验,为今后类似隧道工程中大体量高压富水隐伏岩溶问题的处理提供参考和借鉴。
Karst disaster seriously jeopardizes the safety of tunnel construction and affects the progress of construction. It is the key and difficult problem for tunnel construction at home and abroad. First of all, this paper analyzes the features of water inrush from the maroyo tunnels, and introduces the technologies of advanced geological prediction, hydrological observation, dredging and water drainage, In the application of +978 dissolution chamber for the revealing process and reveals the state after the cavity was described in detail, and finally reveal the cavity after revealing the use of curtain grouting reinforcement and the whole section of the pipe shed technology and pile foundation span across Cavity and other engineering measures were described in detail. The successful experience of construction and treatment of the red deer Karst tunnel provides reference for the treatment of the large-volume high-pressure water-rich latent karst in similar tunneling projects in the future.