High-flow main road subsurface method settlement control construction method

Abstract

The application relates to the technical field of settlement control construction, and discloses a high-flow main road subsurface excavation method settlement control construction method, which comprises the following construction steps: 1) setting a guide wall and penetrating a steel pipe; 2) pouring outer layer slurry into the steel pipe, and combining the soil around the subsurface excavation tunnel section into a whole by the outer layer slurry; 3) dividing into multiple excavation areas; 4) pouring inner layer slurry into the inside of the excavation area through a guide pipe, and combining the soil in the excavation area into a whole by the inner layer slurry; 5) excavating the soil to form a hollow section, and setting a steel bar lattice frame on the inner side wall of the hollow section for supporting; 6) repeating the construction step 5) until the hollow section penetrates through the subsurface excavation tunnel section; the guide wall and the penetrating steel pipe are arranged, the ground settlement and the deformation of the adjacent pipeline caused by the excavation of the subsurface excavation tunnel section are reduced, and the excavation safety of the subsurface excavation tunnel section is ensured; the subsurface excavation tunnel section is divided into multiple excavation areas, and the effects of reducing the excavation span and lowering the excavation height are achieved.

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