A construction method for water storage and filling of sand retaining dams for geotechnical pipe bags

Abstract

The invention discloses a debris dam water storage filling construction method for a geotex tube bag. The construction method comprises the following steps: (1) arranging a closed cofferdam at the place where requires constructing in a groove excavating or dam constructing manner; (2) determining the position of a sand storage area and flattening a foundation bed; (3) measuring, performing paying off, and marking; (4) mounting an ecological tube bag; (5) filling the geotex tube bag with sand by adopting a sand pump. According to the method, the geotex tube bag construction efficiency can be obviously improved; the work period can be shortened; limited water source and sand source can be fully utilized; the construction cost can be reduced effectively.

Description

technical field [0001] The invention belongs to the technical field of construction and relates to a construction method for water storage and filling of a sand retaining dam used for geotechnical pipe bags. Background technique [0002] In recent years, with the rapid development of geosynthetics, geosynthetics have been more and more used in coastline improvement projects in coastal areas, river bank improvement projects in riverside areas, and environmental protection dredging projects. On land, the method of filling sand with geotechnical pipe bags is generally used for cofferdam construction. Usually, the construction of geotechnical pipe bag filled with sand is divided into two methods: hydraulic filling operation and manual mechanical operation: land construction generally adopts the method of "mechanical bagging + manual sewing". This process has the disadvantages of insufficient filling, lack of compactness, large later settlement, and poor forming appearance, and t...

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Problems solved by technology

On land, the method of filling sand with geotechnical pipe bags is generally used for cofferdam construction. Usually, the construction of geotechnical pipe bag filled with sand is divided into two methods: hydraulic filling operation and manual mechanical operation: land construction generally adopts the method of "mechanical bagging + manual sewing". This process has the disadvantages of insufficient filling, lack of compactness, large later settlement, and poor forming appearance, and this method requires a large number of personnel and machinery, high cost, and slow construction progress; the method of hydraulic filling is adopted , the water demand is large, and it is required that the land operation area should not be too far away from the water source, otherwise it will face problems such as long pumping distance, increased mechanical power cost, and reduced efficiency.

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