Existing river channel diversion construction method

Abstract

The invention relates to an existing river channel diversion construction method. The diversion construction method comprises the following steps that 1, lock catch steel sheet piles are driven into the positions, close to a river embankment, of the two sides of the river channel in the river channel direction; 2, cement mixing piles are constructed on the protruding side of the river channel, and drainage treatment is conducted on the concave side of the river channel; 3, primary backfill soil is excavated on the protruding side of the river channel and backfilled to the concave side in the river channel to form a protection slope; 4, cement mixing piles are constructed at the position of backfill soil on the concave side in the river channel; and 5, cast-in-place piles are constructed below sidewalks on the two sides of the river channel correspondingly. Soil excavated from the protruding side of the river channel is backfilled to the concave side of the river channel, so that the bent river channel becomes straight, the impact of water flow on a river bank is reduced, and the situation of embankment breach of the riverway is not prone to occurring; the strength of the soft soil foundation at the backfilling position is improved through the cement mixing piles; and the cast-in-place piles improve the strength of the foundation at the sidewalk of the river channel, so that the situation that soil at the sidewalk part laterally moves towards the river channel when being pressed is not prone to occurring.

Description

technical field [0001] The application relates to the field of river construction, in particular to an existing river diversion construction method. Background technique [0002] Most of the rivers within the scope of this project were constructed before the 1990s, and have not reached the once-in-50-year flood control and drainage standards. At present, the current situation on both sides of the river is mainly residential buildings and fish ponds, and there are also some farmlands, which undertake the functions of tidal protection, irrigation and drainage. Most of the embankments are earth embankments and dry stone embankments, with steep slopes. There is no unified planning, design and management, resulting in messy, some sewage is not up to standard and directly discharged into the river, resulting in serious water pollution, silt garbage clogging the river, seriously affecting the flooding of the river, causing flooding in some areas, and serious river erosion due to lo...

AI Technical Summary

Problems solved by technology

There is no unified planning, design and management, resulting in messy, some sewage is not up to standard and directly discharged into the river, resulting in serious water pollution, silt garbage clogging the river, seriously affecting the flooding of the river, causing flooding in some areas, and serious river erosion due to long-term water erosion , forming a certain security risk

[0003] In view of the above-mentioned related technologies, the inventor believes that there is a river for bending, because the side of the river is easy to be scoured, and the width of the river is small, which is likely to cause the risk of embankment bursting

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