Foundation drainage method and system

Abstract

The invention discloses a foundation drainage method and system. The foundation drainage method comprises the following steps that a vertical drainage main pipe internally provided with a plurality of separation layers and a plurality of water pumping sub-pipes is implanted into a foundation; the top end and the upper side wall of the drainage main pipe are closed, and a plurality of filter holes are formed in the lower side wall of the drainage main pipe; the depth arrangement of the separation layers is adjusted, and a multi-layer drainage cavity is formed; the water pumping sub-pipes are inserted into the drainage cavity; and the foundation is drained through the water pumping sub-pipes. According to the foundation drainage method and system, accurate layered vacuum air pumping drainage can be conducted on all layers of soil according to the soil layer permeability coefficient difference, the soil displacement of the soil with the poor permeability coefficient is increased, the drainage time of the soil layer is prolonged, a traditional vacuum precipitation mode construction method is replaced, the well diameter is increased, the precipitation path is shortened, and the deep soft soil precipitation effect is improved.

Description

technical field [0001] The present invention relates to the technical field of foundation treatment, more specifically to the technical field of layered dewatering of soft foundation soil and soft soil reinforcement treatment, and in particular to a foundation drainage method and system. Background technique [0002] With the development of my country's economic construction, the vigorous development of landfill along the river and coastal tidal flats involves more and more complex geological conditions of soil such as silt, silt, silt, and silt, and the stability, uniformity, and There are more and more uncertain factors such as rock and soil properties, water, soil chemical composition and corrosion. The formation of soil has its diversity and complexity, especially for the artificially formed dredger fill soil, the formation of soil layers is more complicated and the distribution of soil layers is uneven. The difference in soil properties between layers leads to more comp...

AI Technical Summary

Problems solved by technology

The difference in soil properties between layers leads to more complex differences in permeability coefficients between soil layers

[0003] In the existing technology, the dewatering process is not specific to soils with large differences in permeability coefficients, resulting in insufficient or excessive precipitation, and the water content of silty soil cannot meet the requirements of the dynamic compaction process

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