Arch grate type reinforced concrete debris flow stop dam and construction method thereof

Abstract

The invention discloses an arch grate type reinforced concrete debris flow stop dam and a construction method thereof. The stop dam comprises a plurality of stop main arch rings, vertical connecting beams and arch foot foundations on the two banks of a channel. The two ends of the stop main arch rings are fixedly connected with the arch foot foundations correspondingly. A plurality of grate boxesare defined by every two adjacent stop main arch rings and every two adjacent stop arch vertical connecting beams, and a stop dam face is formed. According to the construction method, a foundation isexcavated, the bottom layer stop main arch rings, the arch foot foundations, the stop arch vertical connecting beams and the rest of stop main arch rings are sequentially constructed, and the arch grate type reinforced concrete debris flow stop dam is formed. According to the type of stop dam, original debris flow impact force perpendicular to a dam body is decomposed into pressure stress in the main arch ring direction, finally, the pressure stress is transmitted into rock soil bodies on the two banks of the channel, the anti-shear effect of a traditional stop dam is improved, a very good mechanics effect is achieved, and the integral stability, debris flow impact force resisting performance and anti-shear performance are improved; and an overflow port is not arranged, and the beneficialeffects that the structure is simple, safety and reliability are achieved, materials are saved, and cost is reduced are achieved.

Description

technical field [0001] The invention belongs to the technical field of mud-rock flow retaining facilities, and relates to a valley-type mud-rock flow retaining dam capable of resisting large solid matter, in particular to an arched grid type reinforced concrete mud-rock flow retaining dam; the present invention also relates to a retaining dam construction method. Background technique [0002] Barrier dam is a widely used facility in debris flow prevention and control engineering. It can control or increase the erosion base level of some parts of the ditch bed, and prevent the ditch bed from undercutting in the siltation area; intercepting a large amount of sediment above the dam site can change the nature of the debris flow. Reduce the discharge scale of debris flow; it can also widen the ditch bed and slow down the slope. Among them, the masonry gravity dam is a main type, and the masonry gravity dam is generally arranged in a straight line perpendicular to the main flow d...

AI Technical Summary

Problems solved by technology

However, in practical applications, the block impact resistance of masonry gravity dams is poor, and shear failure is prone to occur, and the dam body washout phenomenon occurs from time to time, so the dam body is generally large in size, deep in embedding, and consumes a lot of materials

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