Hydropower station water diversion inclined shaft arrangement structure and method suitable for TBM construction

Abstract

The invention discloses a hydropower station water diversion inclined shaft arrangement structure and a method suitable for TBM construction. TBM equipment is transported to an assembly cavern through a second construction adit to complete assembly and is stepped into a starting cavern to prepare for excavation of a corresponding water diversion inclined shaft, after excavation is completed, the TBM equipment is disassembled in a disassembly cavern and is transported out through a first construction adit, then the TBM equipment enters into an assembly cavern corresponding to another water diversion inclined shaft through the second construction adit for assembly, after assembly is completed, starting, tunneling and disassembling are conducted, and so on, and excavation construction of all the water diversion inclined shafts is completed. The hydropower station water diversion inclined shaft arrangement structure can solve the problems that a water diversion system is long and a middle adit needs to be additionally arranged, the water diversion system arrangement is optimized, the water diversion system length is shortened, the project civil engineering amount is reduced, and the construction speed is increased.

Description

technical field [0001] The invention belongs to the technical field of hydropower and water conservancy engineering, and in particular relates to an arrangement structure and method for a diversion inclined well of a hydropower station suitable for TBM construction. Background technique [0002] At present, the diversion tunnels of the water delivery system of high-head power stations in China generally choose the layout plan of multi-level inclined shafts or vertical shafts. It is characterized by steep inclination, large diameter and long length, so the construction is difficult. At present, the general design parameters of inclined water diversion wells in China are: inclination angle 45°-60°, excavation diameter 6-10m, and the maximum construction length is controlled at about 400m due to the limitation of construction capacity. In recent years, due to the construction of pumped storage power stations in China, the construction technology of the inclined shaft has made ...

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Problems solved by technology

[0006] The object of the present invention is to provide a structure and method for the layout of inclined wells in hydropower stations suitable for TBM construction, so as to solve the problem that the length of the water diversion system caused by the arrangement of multi-level inclined wells or shafts is long, and when the length of the inclined well is long, it is necessary to add a middle Problems with construction branch tunnels in flat or middle level tunnels

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