Scheme Research on Shallow Underground Excavation of Dawushan Tunnel Crossing Duilonghe
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Abstract:
The Dawushan tunnel crossing Duilonghe segment of the Niulangjiang-Dianchi Lake Water Supplement Project has some disadvantages such as complex ground surface environment, shallow buried depth, and complicated geological conditions. In consideration of the technical, economic, and environmental factors, the combined measure of pre-consolidation grouting on the ground and steel in the cave combined with advanced small pipe was applied, to help the project crossing the shallow buried segment successfully.. The project finally realizes the goals of safe construction, guaranteed working period, reasonable investment, and energy conservation and environmental protection, which can provide reference for other similar projects.