Technology of rapidly constructing cofferdam by large mud-filled bags combined with sand-filled bags on soft soil foundation

Abstract

The invention provides a technology of rapidly constructing a cofferdam by large mud-filled bags combined with sand-filled bags on a soft soil foundation, construction can be conducted directly on the soft soil foundation, and a road, the cofferdam and a block dam can be rapidly formed. The technology mainly includes the constructing steps that a soil engineering soft body row is laid on an original mud surface; a first layer of large sand-filled bags and a second layer of mud-filled bags are constructed sequentially, and the mud-filled bags and the sand-filled bags can be collected from the local area; sand blowing is conducted within two meters of the outer edges of the mud-filled bags, and a third layer of sand-filled bags is constructed; filled mud bag blowing and filled sand bag blowing are sequentially constructed in a cycled mode, and the sand-filled bags are located on the uppermost layer. The gradient ranging from 1: 1.5 to 1: 2 is appropriate. The technology has the advantages that consumption of natural sand materials is reduced, the filled mud can be collected from the surrounding soft soil, the surrounding soft soil is reduced, and the technology is environmentally friendly, rapid, economical and advanced.

Description

technical field [0001] The invention belongs to the structural design and construction technology of the enclosure structure of weak foundations in civil engineering, and particularly relates to the rapid formation of large mud-filled bags combined with sand-filled bags on soft soil foundations with large-scale mud-filled bags combined with sand-filled bags on soft foundations Rapid construction of fence technology. Background technique [0002] Large-scale filling bag technology refers to sewing the woven cloth into a mold bag with a certain size and special shape by machine or manually. Open the filling port on the top surface of the filling bag, and then use the pressure provided by hydraulic or mechanical to extract the filling material and fill it into the mold bag to form a filling bag. The filling mold bag contains many Small holes, these small gaps can filter out excess water, and when the excess water is filtered out of the mold bag under the action of water seepag...

AI Technical Summary

Problems solved by technology

However, medium sand, silty fine sand or silt resources are in short supply in some areas, such as Tianjin Port area, silt and silt are transported from Caofeidian or Huanghua area to Tianjin Port, which seriously restricts the construction progress of the enclosure. Therefore, we urgently need A rapid and economical method of building enclosures that can meet engineering needs

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