A protective device for concrete gravity dam heels against underwater contact explosion

Abstract

The invention discloses a protection device for the underwater anti contact explosion of a concrete gravity dam heel. The protection device comprises a front panel arranged in sequence from the front to the back, a wave panel, a middle panel, a support partition board and a back panel; the peripheries of the front panel, the middle panel and the back panel are sealed and fixedly connected through a side panel, the wave panel and the front panel and the middle panel are not fixedly connected, the support partition board is used for partitioning the middle panel and the back panel, the support partition board is formed by multiple vertical plates connected together with multiple horizontal plates, and the vertical plates and the horizontal plates partitions the place between the middle panel and the back panel into multiple small cavities which can store sealed air. The deformation and breakage of the front panel and the wave panel are utilized by the protection device to absorb part of the energy from the explosion, then the wave resistance and mismatch resistance principle of the air and the surrounding water medium is utilized, the explosion shock waves are further reflected and attenuated, thus the anti-explosion protection of the gravity dam is increased; the protection device has the advantages of being good in anti-explosion ability, high in residual intensity, simple in structure, and rapid and destruction-free in protection deploying.

Description

technical field [0001] The invention relates to an anti-explosion protection structure for a concrete gravity dam heel, specifically a protection device for a concrete gravity dam heel against underwater contact explosion, which is suitable for concrete gravity dams during wartime or when threatened by terrorism Anti-blast safety protection of heels and safety protection of nearby structures during blasting demolition of rock ridges. Background technique [0002] The concrete gravity dam mainly relies on its own weight to maintain stability, so the lower part of the concrete gravity dam has a large volume and the upper structure is weak. Under the action of underwater contact explosion load, although the upper dam structure is more likely to be damaged, it will not cause serious dam failure accidents. Due to the phenomenon of stress concentration in the dam heel area, tensile cracking damage is prone to occur, and the dam anti-seepage curtain is relatively close to the dam ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of protective device for concrete gravity dam dam heel anti-underwater contact explosion, to solve the problem of concrete gravity dam safety protection, in order to solve the above-mentioned technical problem, the technical scheme that the present invention adopts is:

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