Alpine region gully small-flow double water taking system

Abstract

The invention belongs to the technical field of water conservancy projects, and relates to a water diversion and water taking technology in water conservancy projects, in particular to an alpine region gully small-flow double water taking system. A midstream water taking area comprises a retaining wall, a solid overflow dam section, a water collecting gallery cavity overflow dam section and a bottom grid water taking dam section; the bottom grid water taking dam section is arranged between the solid overflow dam section and the water collecting gallery cavity overflow dam section; the part, higher than an upstream anti-seepage blanket area and a downstream apron area, of a midstream water taking area is divided into an upstream face, an interlayer part and a protection slope; the interlayer part of the bottom grid water taking dam section is provided with a grid and a cavity to form a bottom grid water collecting gallery, and the interlayer part of the water collecting gallery cavity overflow dam section is provided with a cover plate and a cavity to form a cavity overflow dam section water collecting gallery; and the bottom grid water collecting gallery communicates with the cavity overflow dam section water collecting gallery and is of a longitudinal slope structure from high to low, and a water diversion pipe arranged at the retaining wall is guided into the bottom grid water collecting gallery. Water taking in winter can be guaranteed, and investment can be saved.

Description

Technical field [0001] The present invention belongs to the field of water conservancy engineering, involving water-proof engineering water, specifically, in particular, Digogou Small flow double water water system. Background technique [0002] The high-definition in the southwest mountain area is high, the riverbed is narrow, the water is very shallow, the riverbed is large, and there are many shifting. The traffic is unstable. In winter, it is easy to freeze, from the current constructed project, there are two main ways. , The base grid is water and the oozing channel takes water. Among them, the bottom grid is shortaged: 1 in the alpine area, the winter river is small in the drying period, the bottom grid dam grille is easy to be frozen without water; 2 column is easily pushed or suspended. Disadvantages of water extraction: 1 The water in the dry water is about 50% -60% or even less water, the water is extremely unstable; 2 渗渠 渠 水 水 is suitable for the river or stream clear,...

AI Technical Summary

Problems solved by technology

Among them, the disadvantages of water intake with bottom grids: ①In alpine mountainous areas, the flow of rivers in winter is small during the dry season, and the grids of bottom grids and dams are easy to freeze and cannot draw water; ②The grids are easily blocked by moving or suspended matter

Disadvantages of infiltration canal water intake: ①The water output in the dry season is about 50%-60% or even less of the water output in the wet season, and the water intake is extremely unstable; ②Infiltration canal water intake is suitable for clear rivers or streams with low mud content For rivers in alpine and cold mountainous areas, the seasonal changes are relatively large, and the water quality of rivers in flood seasons is relatively large. The seepage ditches on the mountain streams are buried shallowly, and their anti-scour capacity is weak, so it is often necessary to add anti-scour block stones, the possibility of silting increases, and even the required water cannot be obtained; ③The water intake of the seepage canal decreases with the increase of the service life. The seepage canal is cleaned and the reverse filter material is replaced, and the post-operation cost of the seepage canal is relatively high

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