Treatment method for soft soil foundation with high water content

Abstract

The invention discloses a water guide device for a soft soil foundation with high water content. The water guide device comprises a plurality of PVC pipes, high-pressure rotary spraying pipes and water drainage pipes, wherein one end of each PVC pipe is closed, and the PVC pipes are vertically placed in the soft soil foundation in rows; a plurality of reserved holes are formed in the side wall ofthe part, located in the soft soil foundation, of each PVC pipe; the high-pressure rotary spraying pipes are coaxially arranged in the PVC pipes in a sleeved mode, and outlets in the bottom ends of the high-pressure rotary spraying pipes are used for spraying air into the PVC pipes; the high-pressure rotary spraying pipes are lifted from bottom to top in the air spraying process until the high-pressure rotary spraying pipes are separated from the PVC pipes, so that high-pressure air is sprayed out from the reserved holes, and a plurality of transverse splitting drainage channels are formed inthe soft soil foundation; and the water drainage pipes are coaxially arranged in the PVC pipes in a sleeved mode, and are used for pumping and guiding water in the soft soil foundation into the PVC pipes through the drainage channels and guiding the water out through the water drainage pipes. According to the water guide device for the soft soil foundation with the high water content, the water insoft soil sludge is gathered into the PVC pipes and is discharged to the outside, so that the drainage consolidation can be accelerated, and the construction period can be shortened.

Description

【Technical field】 [0001] The invention belongs to the technical field of soft soil foundation treatment, and in particular relates to a method for treating soft soil foundation with relatively large water content. 【Background technique】 [0002] At present, the treatment methods for soft soil foundations with relatively large water content (including tidal flats, dredged silt distribution areas, etc.) usually adopt surcharge or vacuum preloading drainage consolidation method, or surcharge combined with vacuum preloading drainage consolidation method, and then use cement mixing Pile or mixed with a curing agent to form a composite foundation. [0003] The surcharge or vacuum preloading drainage consolidation method has great limitations. Mainly manifested in: (1) The existing technology is a deep treatment technology from the surface to the underground, and the economic treatment depth generally does not exceed 10m; (2) The construction period is long; (3) The follow-up soil...

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Problems solved by technology

[0006] Both of the above two inventions combine surcharge loading or vacuum preloading to accelerate drainage consolidation, but the construction period is longer, the treatment depth is limited, and the bearing capacity of the treated foundation is limited

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