The Application Of Surface Injecting To Reinforce Fractured Surrounding Rock In Highway Tunnel

Because the huge highway tunnel with the geological terrain reason must pass through the shallow and crashed submersion area, when this section of tunnel excavation easy to have the landslide, thus creates the significant security hidden danger and the quality hidden danger. This article depended on Guangdong Province some into construct the highway tunnel, development surface injecting in crashed wall rock reinforcement applied research.The article in the foundation which the predecessor works on the crevasse rock mass grouting theory, has analyzed the multi-crevasse rock mass characteristic, the grouting material theory, the cement size in rock mass crevasse mobile mechanism, for the grouting way, the reinforcement scope, the hole position provide the theory basis.From principle of design, plan choice, injection experiment, hole arrangement, poured the thick liquid pressure indeed to grade several aspects to summary the surface injecting when reinforce fractured surrounding rock in design, has been clear about the design must consider the security and the environmental protection request, has set specific request about construction matters needing attention, safety control construction organization plans and managed . Through many means about grouting effect examination, the grouting reinforcement shallow and weak adjacent formation has the possibility, the feasibility, the security and the efficiency.