Check dam of channel and construction method thereof

Abstract

The invention discloses a check dam of a channel and a construction method thereof. A check dam body is transversely arranged in the channel, the bottom of the check dam body stretches downward into the bottom of the channel, dam abutments on two sides of the check dam body transversely stretch into channel grooves, the height of an upstream face of the check dam body is raised gradually along thewater flow direction, the height of a back side of the check dam body is reduced gradually along the water flow direction, protecting walls are arranged on the side of the inflow direction of the check dam body on the channel grooves in two sides, the upstream end part of each protecting wall is bent toward each channel groove, and the downstream side of each protecting wall is connected to the upstream face of the check dam body; as the protecting walls are additionally arranged on the side of the upstream face of the check dam body, the problem of dam collapse as the upstream face of the check dam body flushes the channel grooves in two sides is solved. The upstream end parts of the protecting walls are bent toward the channel grooves and stretch into the channel grooves, so that a water flow can be effectively prevented from seeping from the back side of the walls. Therefore, the check dam of the channel provided by the invention is relatively high in stability.

Description

technical field [0001] The invention relates to the technical field of erosion ditch protection, in particular to a ditch valley and a construction method thereof. Background technique [0002] Gufang is one of the most effective technical measures for erosion ditch control. According to building materials, it can be divided into earthen Gufang, Shigufang and plant Gufang. The soil valley square is made of filled soil and is suitable for soil hilly areas, but limited by the overflow of the dam crest, its application is seldom; the plant valley square is made of willow piles and willow fences filled with soil or rocks, and its height No more than 1.5m, it is only suitable for the treatment of branch hair ditches with small flow; Shigufang is made of mortar masonry, dry stone or gabion masonry, suitable for stone or earth rock mountainous areas, due to the stability of gabion valley Higher, so its application is the most widely. [0003] At present, gabion valley squares are...

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Problems solved by technology

[0003] At present, gabion valley squares are all made of cuboid gabion net cages in a step-by-layer manner, each extending into the ditch bank on both sides by 0.5-1.0m, and there is still a problem of water damage, mainly due to the soil ditch on both sides of the facing surface The bank was expanded laterally by hydraulic scour, and after the Gufang dam abutment was exposed, the soil at the abutment of the gully bank was seeped and deformed. collapse

[0004] Therefore how to solve the problem that the stone cage valley square dam body is easy to collapse due to flow around the abutment is a technical problem that those skilled in the art need to solve at present

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