Water conveyance tunnel line system crossing active fault

Abstract

The invention belongs to the field of water resource and hydro-power engineering and discloses a water conveyance tunnel line system crossing an active fault. The water conveyance tunnel line system is structurally characterized in that a buried pipe is arranged in a water conveyance tunnel of the upstream of the active fault, the water conveyance tunnel is connected with exposed pipes in a transition mode through the buried pipe, the exposed pipes are installed in the water conveyance tunnel and sequentially connected through expansion joints, the exposed pipes penetrate through the active fault, the connecting portions of the buried pipe and the exposed pipes are provided with safety valve chambers, and safety valves are installed in the safety valve chambers and provided with overspeed trip gears, and the portions, between the downstream of the safety valves and the active fault, of the exposed pipes are provided with pressure adjusting chambers. The water conveyance tunnel line system solves the problem that the water conveyance tunnel line system can not be built on the large dip separation active fault or the main active fault, and has the advantages of being capable of stopping high-speed water flow fast after being damaged, reducing water leakage amount, preventing accident loss from increasing, and being fast to repair.

Description

technical field [0001] The invention belongs to the field of water conservancy and hydropower engineering construction, and in particular relates to a water delivery tunnel system across active faults. The system is suitable for water conservancy and hydropower projects where the water tunnel crosses active faults, especially for large and medium-sized hydropower projects with large-scale active faults in areas with high seismic intensity. Background technique [0002] Under the current technical conditions, active faults are generally avoided when selecting hydropower station sites or arranging power station buildings, especially important buildings are not allowed to cross active faults. Linear engineering such as small-scale water transmission lines sometimes cannot avoid active faults. When crossing it, the main fault should be avoided as much as possible. Earth-rock dams are more reliable than any concrete dams for adapting to fault displacements in the dam foundation....

AI Technical Summary

Problems solved by technology

[0005] However, these technical problems have not yet found a feasible solution in the field of hydropower engineering construction.

However, with the improvement of hydropower development, it is unavoidable to build power stations in high seismic intensity areas and active faults

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