A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a tunnel supporting method and relates to the municipal engineering. The tunnel supporting method comprises the following steps of step 1, performing the upper step method excavation; step 2, performing the lower step method excavation, wherein the small dose of explosive blasting is adopted and a first I-shaped steel support of a lower step is laid; step 3, pouring inverted arch plastic concrete B, wherein the plastic concrete B is uniformly mixed, conveyed to the pouring position through a carrier vehicle, directly pumped into a pouring module through a conveyor pump and maintained after pouring and a pouring template is detached; step 4, performing the secondary lining on the lower step, wherein the one-step porting forming is achieved and the layered tamping is performed through a vibration rod in the pouring process; step 5, performing the inverted arch backfilling, wherein the inverted arch backfilling is performed on the concrete, the one-step porting forming is achieved, the layered tamping is performed in the pouring process, the concrete is maintained for 2 to 4 days after pouring, and a pouring module is detached. Compared with the existing tunnel supporting method, the cost is low and the deformation is not easy to cause.
The invention discloses a tunnel supporting method and relates to the municipal engineering. The tunnel supporting method comprises the following steps of step 1, performing the upper step method excavation; step 2, performing the lower step method excavation, wherein the small dose of explosive blasting is adopted and a first I-shaped steel support of a lower step is laid; step 3, pouring inverted arch plastic concrete B, wherein the plastic concrete B is uniformly mixed, conveyed to the pouring position through a carrier vehicle, directly pumped into a pouring module through a conveyor pump and maintained after pouring and a pouring template is detached; step 4, performing the secondary lining on the lower step, wherein the one-step porting forming is achieved and the layered tamping is performed through a vibration rod in the pouring process; step 5, performing the inverted arch backfilling, wherein the inverted arch backfilling is performed on the concrete, the one-step porting forming is achieved, the layered tamping is performed in the pouring process, the concrete is maintained for 2 to 4 days after pouring, and a pouring module is detached. Compared with the existing tunnel supporting method, the cost is low and the deformation is not easy to cause.
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