Steel mould trolley tunnel concrete lining construction method

Abstract

The invention provides a steel mould trolley tunnel concrete lining construction method. The steel mould trolley tunnel concrete lining construction method comprises the following steps that underground earthwork is successively excavated in a target region in a segmented mode to form a plurality of linear tunnel sections and a plurality of bent tunnel sections, all the linear tunnel sections andthe bent tunnel sections finally communicate in sequence according to the excavation sequence to form a spillway tunnel, and meanwhile, a steel mould trolley is used for conducting segmented successive lining in the extending direction of the spillway tunnel, linear tunnel walls are formed on the linear tunnel sections in a lining mode, bent tunnel walls are formed on bent tunnel sections in a lining mode, all the linear tunnel walls and the bent tunnel walls are finally connected in sequence according to the lining sequence to form a tunnel body protecting wall, the length of the linear tunnel walls is smaller than 8 m, and the length of the bent tunnel walls is smaller than 4 m. By adopting the technical scheme, disturbance to surrounding rock of the spillway tunnel is reduced through the methods of segmented excavation, segmented lining and layered concrete pouring, the excavated surrounding rock is reinforced in time, water seepage is effectively prevented, and the safety of constructors is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to a concrete lining construction method for a steel formwork trolley tunnel. Background technique [0002] A spillway is a water conservancy facility built to take the water accumulated in the reservoir. In the prior art, during the excavation of the spillway, rock plugs are often reserved at the end of the spillway, and then blasting The construction destroys the rock plug, so that the spillway and the reservoir are connected to guide the water flow out, so as to take the water source. In the prior art, when the rock plug is destroyed by blasting, the corresponding earthwork will be washed out by the water flow. If the rock plug earthwork If there are too many, the spillway tunnel will be blocked, resulting in a reduction in the flow of water flowing out of the spillway tunnel, which will affect the water intake effect of the spillway tunnel. In addit...

AI Technical Summary

Problems solved by technology

[0002] A spillway is a water conservancy facility built to take the water accumulated in the reservoir. In the prior art, during the excavation of the spillway, rock plugs are often reserved at the end of the spillway, and then blasting The construction destroys the rock plug, so that the spillway and the reservoir are connected to guide the water flow out, so as to take the water source. In the prior art, when the rock plug is destroyed by blasting, the corresponding earthwork will be washed out by the water flow. If the rock plug earthwork If there are too many, the spillway tunnel will be blocked, resulting in a decrease in the flow of water flowing out of the spillway tunnel, which will affect the water intake effect of the spillway tunnel