Construction method of river channel drainage basin flood prevention dam

Abstract

The invention discloses a construction method of a river channel drainage basin flood prevention dam, and belongs to the technical field of dam construction, and the construction method comprises the following steps: S1, a slope surface in front of a flood prevention wall is desilted and levelled; S2, paying off and positioning are conducted, the boundary of the slope surface is excavated, and a groove is processed; S3, polypropylene filament yarn woven cloth is thrown in front of the flood prevention wall, and then rock blocks are thrown and packed in front of the flood prevention wall; S4, net bag gabions are adopted at the slope toes for protecting the toes; S5, a connecting device is installed between every two adjacent net bag gabions; and S6, the upper portion of the riprap is leveled through bagged gravel, and then film bag concrete is used for surface protection. After constructors place the net bag gabions one by one, the adjacent net bag gabions are connected through connecting devices, so that the multiple net bag gabions are connected, when water flow in a river is large, the multiple net bag gabions are connected, and then the possibility that the net bag gabions move in a water area can be reduced.

Description

technical field [0001] The application relates to the technical field of dam construction, in particular to a construction method for flood control dams in river basins. Background technique [0002] my country has a vast territory and many rivers and lakes. Flooding often occurs in some river basins. People often use dikes to prevent floods. Building dikes has become the main measure to prevent flooding, protect residents and industrial and agricultural production. , the function of the embankment is to limit the flood in the flood channel, increase the water depth of the same flow rate, increase the flood velocity, and facilitate flood discharge and sediment discharge. [0003] Related technologies can refer to the Chinese invention patent application whose authorized announcement number is CN111778922A. Wherein it discloses a construction method of a river basin flood control dam, the method is as follows: before constructing the concrete, construct a beach protection pro...

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Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that there are the following technical defects: multiple gabions are relatively independent, and when the water flow in the river is large, the gabions may move at the bottom of the water, thereby affecting the construction of the embankment Safety in process and stability of embankment

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