A construction method for dehydrating high-viscosity mud filled with pipe bags

Abstract

The invention provides a construction method for efficient dehydration of geo-tube filled high adhesive content mud. The periphery of a geo-tube is provided with discharge cuffs, used for discharging adhesive particles and powdery particles which settle slow in the high adhesive content mud and which easily block pores of the geo-tube. The construction method has the advantages that mud with high adhesive (powder) particle content can be quickly and efficiently dehydrated, soil is discharged, and sand is retained; after filling of the mud with high particle content, particles settle slow and easily block the pores of the geo-tube, and drainage is unsmooth; the mud less than 25% in concentration is used, sand particles are quickly separated from the adhesive particles and powdered particles after mud filling, and the discharge cuffs are opened to discharge water and soil after the sand particles settle; the adhesive and powdered particles can be discharged during efficient dehydration of the geo-tube, following construction of a geo-tube above is shortened, and great significance is brought to the geo-tube construction in coastal areas of south China, in shortage of sand resources.

Description

Technical field: [0001] The invention relates to a construction method for dewatering pipe bags filled with high-viscosity mud, and belongs to the field of pipe bag dam building such as coastal reclamation and dikes. Background technique: [0002] Pipe bag dam construction has the advantages of local materials, low cost, and fast construction speed, and has been widely used in coastal reclamation and dikes. The "Technical Specifications for the Application of Geosynthetics in Water Transport Engineering" requires that the sand content of the filling soil material should be greater than 50%, and the viscosity content should be less than 10%. After filling, the mud and water are separated quickly, and the water is discharged through the aperture of the bag cloth. The solid particles are consolidated under the action of their own weight and osmotic pressure, and the sand particles are drained and consolidated quickly. The construction of the upper pipe bag can be carried out in...

AI Technical Summary

Problems solved by technology

However, in some southern coastal areas of my country, such as Jiangsu, Zhejiang, Fujian, etc., most of the soil materials that can be used for filling nearby have high clay and silt content. Fine particles form a weak mud layer that is difficult to consolidate, and it takes several days to carry out the construction of the upper pipe bag, which is not conducive to rapid construction

The cost of long-distance transportation of qualified sand filling materials is high, which is not conducive to saving project costs

Simply expand the equivalent pore diameter of the pipe bag material, and the surface layer of the pipe bag will still deposit a large amount of fine-grained mud after filling, and the consolidation speed is slow

Images