Construction method for dredging ditch sediment based on hydraulic punching and filling geotechnical pipe bag

Abstract

The invention relates to a construction method for dredging ditch sediments based on a hydraulic punching and filling geotechnical pipe bag and belongs to the technical field of dredging constructionof sediments in stinky water body ditches. The construction method for dredging the ditch sediments based on the hydraulic punching and filling geotechnical pipe bag includes the following steps of temporary storage yard construction, surface cleaning, sectional construction of cofferdam, construction drainage, assembly of a mud conveying pipeline, hydraulic punching and dredging of the sediments,adding medicament, geotechnical pipe bag filling, sludge dewatering and solidification and transportation or reuse of solidified soil. For the construction method, earth excavation is completed withthe help of hydraulic cutting; soil is then filled by a mud pump through the mud conveying pipeline to a large geotechnical pipe bag; in the dredging pipes, dredging mud and the medicament are fully stirred to produce a flocculation group to be precipitated in a geotechnical pipe belt, and then dehydration and solidification treatment of the sediments is achieved. The construction method for dredging the ditch sediments based on the hydraulic punching and filling geotechnical pipe bag has the advantages of continuity, integrated operation of dredging, conveying and filling, low cost, high construction efficiency, sealing property, no secondary pollution during transportation, good environmental protection performance, high construction precision, good effect, convenient operation and savedworking space.

Description

technical field [0001] The invention belongs to the technical field of ditch mud bottom dredging construction for black and odorous water bodies, and in particular relates to a construction method for dredging ditch bottom mud based on hydraulic excavation and filling geotechnical pipe bags. Background technique [0002] Urban black and odorous water is a water environment problem that the people reflect strongly on. It not only damages the urban living environment, but also seriously affects the image of the city. It is urgent to solve and control the problem of urban black and odorous water. Traditional trench sludge is transported away after mechanical excavation, which not only has low construction efficiency, but also causes secondary pollution during transportation or storage. The dredging construction of the present invention has continuity, integrated dredging, conveying and filling operations, high construction efficiency, good sealing performance, no secondary poll...

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Problems solved by technology

[0003] In order to solve the technical problems existing in the known technology, the present invention provides a low-cost, simple and convenient process, quick construction, strong operability, effectively solves the problems of low dredging efficiency, incomplete dredging, transportation and storage process of ditch mud bottom. A construction method based on hydraulic excavation and filling of geotechnical pipe bags for dredging of ditch bottom mud, which is easy to cause secondary pollution

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