Riprap extrusion sludge combined sandbag well treatment construction method in shallow soft soil layer

Abstract

The invention provides a riprap extrusion sludge combined sandbag well treatment construction method in a shallow soft soil layer. The riprap extrusion sludge combined sandbag well treatment construction method in the shallow soft soil layer is characterized by comprising the following steps of manufacturing sandbag wells; conducting riprap construction of an underlying stratum, when throwing andfilling a rubble stone layer, evenly sinking the sandbag wells into the rubble stone layer; after the throwing and filling height of the rubble stone layer exceeds the water surface height, adopting heavy rolling machine equipment for rolling and compacting the rubble stone layer; paving a gravel layer on the upper side of the rolled and compacted rubble stone layer, and paving geotechnical clothon the gravel layer after paving the gravel layer; and conducting embankment construction. According to the method, the sandbag wells are arranged, so that vertical drainage of a seepage path is increased, meanwhile, a drainage system is formed by combining horizontal drainage of a gravel inverted filter layer, and sludge can be rapidly solidified on site by applying pressure through throwing andfilling rubble stones.

Description

technical field [0001] The invention relates to the technical field of engineering construction, in particular to a construction method for shallow soft soil layer riprap and silting combined with sand bag well treatment. Background technique [0002] At present, with the rapid development of engineering construction, the demand for land has increased sharply. When building roads, they often pass through shallow soft soil areas such as mountainous lake deposits. Usually there are ultra-soft soil such as silt and waste silt in the shallow soft soil layer. These silt or ultra-soft soils are extremely low in strength and cannot be entered by construction workers. They cannot directly meet the load-bearing requirements for land construction and cannot be used for road construction. These projects are all first faced with the problem of large-area soft foundation treatment. Poor handling of soft ground usually leads to engineering problems such as road surface cracking and unev...

AI Technical Summary

Problems solved by technology

Poor handling of soft ground usually leads to engineering problems such as road surface cracking and uneven subsidence during road operation

Usually, the commonly used method is the filling method, but the filling needs to be excavated before filling, the construction is complicated, and it is not easy to compact after the filling depth is large, and if the water content of the silt layer is large, pumping is required

Secondly, the project also has the second method of throwing stones to squeeze the silt, but the one-time throwing of earth and rocks cannot completely squeeze out the soft soil layer at the bottom of the lake. The main reason is that the soft soil layer at the bottom of the lake has a structure of upper silt and lower muddy soil. Compared with silt, it has a longer settling time, is difficult to be compressed and squeezed out, the construction speed is slow and it is easy to cause later settlement

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