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夹活岩隧道地质水文条件复杂,必须对不良地质进行加固处理。文章基于超前小导管注浆加固的原理和适用条件,分析了超前小导管注浆加固技术在夹活岩富水软弱地段加固中的应用技术。对超前小导管设计、注浆参数以及质量控制进行了详细介绍。
Jiaonan rock tunnel geological and hydrological conditions are complex, must be unfavorable geological reinforcement. Based on the principle and applicable conditions of grouting reinforcement ahead of small conduit, this paper analyzes the application technology of advance small conduit grouting reinforcement technology in the reinforcement of weak flooded area of living sandstone. The advanced small catheter design, grouting parameters and quality control were introduced in detail.