Plunge pool structure and construction method thereof

Abstract

The invention provides a plunge pool structure. The plunge pool structure comprises a dam, a water tongue is arranged on one side of the dam, and the water tongue is located on the ground surface line; a concrete foot and plunge pool excavation boundaries are arranged under the water tongue, and the concrete foot and the plunge pool excavation boundaries are located under the ground surface line; one side of the concrete foot is connected with the water tongue, and the other end of the concrete foot is connected with a dam foot of the dam; one side of a plunge pool is connected with the water tongue, and the plunge pool and the concrete foot are located at the same horizontal position without being connected with each other; and the two sides of the concrete foot are provided with revetments correspondingly. By adoption of the plunge pool structure, the problem of low anti-floating stability is solved, no curtain grouting system, no drainage system, no pumping drainage system and no monitoring system is arranged, the engineering quantities of concrete, basic joint bars, steel bars, consolidation grouting, drainage holes and the like are reduced, the engineering investments are decreased, the construction period of an absorption basin is shortened, the safety risks of the construction period are reduced, and the problem of inspection of the absorption basin in the operating period is avoided effectively.

Description

technical field [0001] The invention relates to a pad pond structure and a construction method thereof, belonging to the field of water conservancy and hydropower engineering structure design. Background technique [0002] The water cushion pond generally forms a deep water cushion by building a secondary dam downstream, so as to protect the bottom of the stilling pool from being scoured and damaged by high head water flow, which is a new type of energy dissipation device. The kinetic energy of the mainstream is continuously transmitted to the turbulent flow and the rolling of the large-scale vortex in the pond through turbulent shearing and diffusion. Dissipation, which is a safe and economical way to dissipate energy. [0003] Existing water cushion ponds generally adopt reinforced concrete structures. In order to ensure the anti-floating stability of the stilling basin, measures such as arranging a large number of foundation reinforcements are often adopted to increase t...

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Problems solved by technology

[0003] Existing water cushion ponds generally adopt reinforced concrete structures. In order to ensure the anti-floating stability of the stilling basin, measures such as arranging a large number of foundation reinforcements are often adopted to increase the effective anchorage weight of the foundation or increase the thickness of the stilling basin. For projects with large downstream water depths , the curtain grouting system, drainage system and pumping facilities are arranged around the stilling basin to reduce the uplift pressure on the bottom of the stilling basin. In addition, the reinforced concrete stilling basin still faces the problem of maintenance during the dry period during the operation period

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