Soft soil foundation combined treatment method

Abstract

A soft soil foundation combined treatment method comprises the steps that (1) holes are drilled in a soft soil foundation, deep well tube wells are embedded in the drilled holes, holes are reserved in the walls of the deep well tube wells, and in the deep well tube wells, underground water in a ground aquifer is pumped and drained through a sinking pump; (2) base slot excavation is performed on the soft soil foundation; (3) the bottoms of base slots are evenly backfilled with sand cushion layers to be used as drainage channels; (4) plastic drainage plates are punched on the backfilled sand cushion layers vertically and downwards, the top ends of the drainage plates stretch out of the surfaces of the sand cushion layers by more than 30 cm, bottom elevations are punched on the drainage plates and at least stretch into the position below the foundation treatment thickness by 3 m, and therefore the underground water can be seeped through the drainage plates, then, the water flows to the tube wells together through the sand cushion layer drainage channels, and then the water is pumped and drained through the sinking pump; (5) when the underground water level is obviously reduced, layering backfilling and vibration grinding are carried out on the dust. According to the method, the foundation bearing force can be improved, the use function of a building is met, the construction cost is low, the construction period is short, and the effect is obvious.

Description

technical field [0001] The invention relates to a foundation treatment method, in particular to a soft soil foundation composite treatment method. Background technique [0002] At present, the importance of foundation reinforcement has been fully affirmed by the industry, especially the reinforcement of soft soil foundations is particularly important; according to different geological and working conditions, how to choose a reasonable foundation reinforcement scheme is something that engineers and technicians need to constantly explore and research topics. [0003] With the increasing scarcity of land resources in coastal areas, tidal flats are an important reserve of land resources, and the investment in tidal flat construction is increasing. The number and scale of engineering construction on tidal flats are developing rapidly. The tidal flat land formed by the silting up of the Yangtze River estuary, the shallow surface soil is relatively soft. If there is a lack of s...

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Problems solved by technology

[0008] Therefore, under the conditions of the above-mentioned soil properties, it is difficult to achieve the effect by conventional foundation treatment and reinforcement methods.

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