Based on the Yudu #1 Tunnel project,the technical measures for surface grouting reinforcement of shallow-buried tunnels in weak strata are studied in the soft surrounding rock section with a depth of 39-58 m and a length of 155 m,which passes through the formation fracture zone,with loose surrounding rock,poor self-stability.The coring comparison,advance drilling,revealing comparison of face strata and underground water quantity comparison before and after grouting show that the formation consolidation effect is good.
关键词
软弱地层/浅埋地表/工艺试验/注浆加固/岩体完整性/经济性
Key words
weak stratum/shallow-buried surfac/process test/grouting reinforcement/rock mass integrity/economy
维普
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