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超前小導管注漿止?jié){方法有哪些?

問 提問者：網(wǎng)友 2018-08-11
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Abstract: Staggered by the length of small pipe leading drilling and grouting support technology, Lion-shaped tunnel Ⅱ rock preinstalled reinforcement, through small pipe hole to loose rock into the cement to the Rock Fracture filling and broken rock glue to form a whole and thus enhance the coherence and rock solid. Thesis describes a small catheter injection process, drilling and grouting equipment, Grouting parameter selection and practical engineering applications. Through the tunnel deformation monitoring and analysis of grouting has achieved very good results. Keywords:Small tube; Tunnel; Surrounding rock reinforcement; Pre-grouting 0Overview With the development of the motorway and railway, an increasing number of tunneling in unstable formations, often with advanced support of the ground pre-reinforcement. Advanced support is generally have the following forms: Advanced large pipe, advanced pre-grouting (comprehensive pre-grouting), ahead of bolt and advance canal, etc.; These consolidation measures,
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