Dam for blocking mountainous area and river way mountain torrents and debris flow

Abstract

The invention discloses a dam for blocking mountainous area and river way mountain torrents and debris flow. The dam comprises at least one assembled prefabricated prestress arch, an arch ring is in an arch shape protruding towards the upstream position in the plane, and an arch foot is assembled between barricade brackets on the two sides. The prefabricated prestress arch is a prefabricated prestress concrete arch. Barricades include the side pier barricades and the middle pier barricade. Underground diaphragm wall manner construction is adopted in foundations of the side pier barricades andthe middle pier barricade, and the anti-sliding force of the dam is improved. Reinforced concrete anti-collision stone intercepting piers are arranged at the upstream position of the dam in a staggered manner. An energy dissipation tail bucket is arranged at the downstream position of the dam, a plunge pool is formed between the prefabricated prestress arch and the energy dissipation tail bucket,and an anti-scouring apron is laid at the downstream position of the energy dissipation tail bucket. The requirement of the dam to the foundations is low, stability is good, and the dam is applicableto various terrain geological conditions. The prestress arch is of a prefabricated concrete arch structure, manufacturing can be conducted in a factory in advance, direct field hoisting is conducted,construction is convenient and fast, the work period is short, and maintaining is convenient; during dam construction, construction flow guiding is not needed, and manpower and material resources aregreatly saved; and since the body form of the dam is small, the structure is simple, and the project cost is low.

Description

technical field [0001] The invention relates to a hydraulic building structure, in particular to a dam body used for blocking mountain torrents and debris flows in mountainous rivers. Background technique [0002] Mountain torrents and mudslides are common natural disasters in mountainous areas, and they are sudden. About two-thirds of my country's land area is mountainous terrain. Therefore, mudslides are widely distributed in my country, especially in the western region, and the disasters are relatively serious. The life and property safety of residents near the river, as well as towns, factories, mines, roads and bridges and other facilities will be damaged by mudslides, causing huge economic losses. The development of disasters directly threatens the safety of people's life and property in the basin and downstream areas, and seriously restricts the healthy development of local social economy. Forecasting methods of debris flow disasters are not yet mature. Therefore, in...

AI Technical Summary

Problems solved by technology

Its disadvantages are: it is not suitable for storing landslides, intermittent viscous debris flows and fine particle debris flows; it is easily damaged by high-speed debris flow faucets and large rocks, requires more steel, and requires better construction conditions and skilled mechanic

The disadvantage is that the service period is short and the integrity of the dam is poor

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