Soft soil foundation treatment method by three-dimensional drainage power pre-pressing consolidation

A soft soil foundation and treatment method technology, applied in soil protection, infrastructure engineering, construction, etc., can solve problems such as the inability to adapt to the requirements of multi-structure soil quality speed and efficiency, and achieve the effect of good effect and large treatment depth.

CN101818494AInactive Publication Date: 2010-09-01郭艳景 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-09-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a soft soil foundation treatment method by three-dimensional drainage power pre-pressing consolidation, comprising the following steps: (1) ascertaining the layering status and the thickness of a foundation compound soil layer to be processed; (2) inserting a drainage tube well into the soil layer until the drainage tube well reaches at about at least of 2.5m under the baseboard of the soft soil layer; (3) performing overload compound prepressing on the soil layer on earth surface so that pore water of the soft soil layer continuously permeates towards an upper layer and a lower layer with good permeability and the drainage tube well; and (4) discharging water outside the soil layer through a drainage pipe. The major innovation on the existing single-side drainage consolidation, vacuum well point dewatering and dynamic consolidation, and a dewatering prepressing method is a novel power drainage consolidation method with large, fast and effective processing depth; and the treatment method has good application prospect on soft soil foundation treatment of deltas, estuaries and coastal areas with similar sedimentary characteristics.
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Description

technical field

[0001] The invention relates to a foundation treatment method, in particular to a three-way drainage dynamic preloading consolidation soft soil foundation treatment method. Background technique

[0002] With the vigorous development of my country's Yangtze River Delta, Pearl River Delta, Bohai Rim, Beibu Gulf, and coastal economic and dock logistics parks, the permeability ternary structure and soft soil layers with the characteristics of layered cross-bedding deposition in the estuary and lower reaches of the river There are more and more foundation treatment projects for stratum sites with thin sand and sand lenses.

[0003] Such as figure 1 As shown, it is a relatively typical composite stratum structure. The characteristic of this kind of soil is that the upper and lower layers of the site have good permeability, and the middle layer has poor permeability but has corrugated bedding and interlayers with good water permeability. Horizontal thin layer of sa...

Examples

Embodiment Construction

[0021] Several preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to these embodiments. The present invention covers any alternatives, modifications, equivalent methods and schemes made on the spirit and scope of the present invention. In order to provide the public with a thorough understanding of the present invention, specific details are set forth in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details.

[0022] The core idea of ​​the present invention is that, aiming at the characteristics of the composite soil structure, three-way synchronous drainage and consolidation of the soft soil layer is performed, and dynamic compaction is applied, so that the pore water of the soft soil layer has better permeability upward and downward quickly. ...