Semi-permanent dam foundation structure of rubber dam for river regulation

Abstract

A semi-permanent dam foundation structure of a rubber dam for river regulation comprises an anti-siltation area, a lifting base body and a sedimentation drainage area, deflector rod assemblies are distributed on the anti-siltation area, the deflector rod assemblies are connected in series through a connecting belt of a reciprocating deflector mechanism to form a multi-row structure, and the deflector rod assemblies are driven by a slider-crank mechanism to reciprocate in the direction perpendicular to water flow. Therefore, the deposited silt is stirred up and flows into the sedimentation drainage area after crossing the rubber dam; a plurality of partition walls are arranged on the sedimentation drainage area, a sedimentation flow channel for guiding the flowing direction of bottom-layer water flow is formed between every two adjacent partition walls, and the downstream of each sedimentation flow channel extends into sedimentation tanks arranged on the two sides of the river channel. By designing the anti-siltation area and the sedimentation drainage area with the shifting rod assemblies, most silt can be deposited on the two sides of a river channel after crossing the rubber dam, manual direct cleaning is facilitated, the convenience degree and cost of desilting are greatly improved, and the desilting frequency of a desilting ship in front of the rubber dam is reduced.

Description

technical field [0001] The invention relates to a rubber dam in the field of water conservancy facilities, in particular to a semi-permanent dam foundation structure of a rubber dam for river regulation. Background technique [0002] Rubber dam is a new type of water-retaining structure. It uses rubber and fiber synthetic tape as a dam bag, which is anchored on the dam foundation to form a closed flexible water-retaining structure. field. [0003] In the prior art, the dam foundation of the rubber dam only provides the installation base of the rubber dam, which is generally built with cement concrete in the river channel. In front of the rubber dam, manual dredging is required, and in the case of a wide river, such as a rubber dam with a span of several tens of meters, a dredging vessel is generally required to regularly dred the central area of ​​the river, which is not only troublesome, but also expensive. higher. SUMMARY OF THE INVENTION [0004] The purpose of the p...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that a rubber dam with a span of tens of meters needs to be removed by a dredging ship to remove sediment. It provides a semi-permanent dam foundation structure of a rubber dam for river channel regulation. The anti-silting area with lever components is designed, and the downstream design of the settlement drainage area can make most of the sediment pass through the rubber dam and deposit on both sides of the river, which is convenient for manual direct cleaning, greatly improving the convenience and cost of dredging , which greatly reduces the frequency of dredging by dredging boats in front of the rubber dam. After simulation experiments, the time required to deposit the same height of sediment in front of the rubber dam is 2-3 times that of the original time.

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