Silt dam and design method thereof

Abstract

The invention discloses a silt dam and a design method thereof. The silt dam comprises a mounting plate provided with a water permeable net, a transverse water permeable hole set corresponding to themounting plate is formed in a dam body, a vertical mounting groove corresponding to the transverse water permeable hole set is formed in the dam body, two or more pairs of U-shaped mounting grooves are formed in the vertical mounting groove, and a reinforcing structure parallel to the water flow direction is arranged on the downstream face of the dam body. The design method comprises the steps: adesign flood level and a check flood level are obtained based on local basin weather, hydrology, geology and landform and rainstorm data so as to obtain dam body elevation; after permeable holes withdifferent sizes and different distribution modes are determined to be simulated in the dam body, load analysis and seepage analysis are conducted; the size and the distribution mode of the water permeable holes are determined based on load analysis and seepage analysis results; the sizes of the water permeable net and the mounting plate and the distribution mode of the vertical mounting grooves are determined based on the sizes and the distribution mode of the water permeable holes; and the local sediment particle size is obtained, and the grid size of the permeable net is determined based onthe local sediment particle size.

Description

technical field [0001] The invention relates to the field of hydraulic engineering, in particular to a check dam and a design method thereof. Background technique [0002] The construction of check dams is one of the important measures of water and soil conservation, and plays an important role in the control of water and soil loss. [0003] At present, check dams mainly discharge water through spillway tunnels or spillways, but the spillway tunnels or spillways are designed for a certain standard of water supply, that is, when the water level exceeds this standard, a large amount of water resources will be released at one time. This method of releasing a large amount of water at one time leads to a low utilization rate of water resources, which easily leads to a shortage of downstream water resources. Contents of the invention [0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention aims to provide a check dam with higher utilization ra...

AI Technical Summary

Problems solved by technology

[0003] At present, check dams mainly discharge water through spillway tunnels or spillways, but the spillway tunnels or spillways are designed for a certain standard of water supply, that is, when the water level exceeds this standard, a large amount of water resources will be released at one time.

This method of releasing a large amount of water at one time leads to a low utilization rate of water resources, which easily leads to a lack of water resources in the downstream

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