Treatment method of soft clay foundation

Abstract

The invention discloses a treatment method of a soft clay foundation. The method comprises the steps that a, multiple water drainage plates (2) are inserted; b, multiple liquid injection pipes (3) are inserted; c, a horizontal liquid injection pipe network communicating with the top ends of the vertical liquid injection pipes (3) is laid and communicates with a liquid injection pump (6); d, a coarse sand cushion layer (7) is laid, a horizontal filtering pipe network communicating with the top ends of the water drainage plates (2) is buried in the coarse sand cushion layer (7), and the filtering pipe network communicates with a vacuum pump (10); e, a sealing system is laid on the coarse sand cushion layer (7); f, the vacuum pump (10) is started for beginning vacuumizing; g, the liquid injection pump (6) is started, and a curing agent of a bio-enzyme solution is pressed into the foundation; and h, after liquid injection is completed for a period of time, the vacuum pump (10) is started again, and vacuumizing continues to be carried out until sedimentation is stable basically. The method enables free water and bound water to be effectively drained out of the soft clay foundation.

Description

technical field [0001] The invention relates to the technical field of foundation treatment, in particular to a reinforcement treatment method for soft clay foundations. Background technique [0002] Soft clay foundations are widely distributed in coastal and inland areas along rivers and lakes in my country. With the development of the economy and urban construction, the demand for construction land has risen sharply, and people naturally hope to use this part of the idle soft clay foundation. But to use this part of the soft clay foundation, the first thing to face is how to treat the soft clay foundation and make it solidify. [0003] There are two main methods of soft soil foundation treatment commonly used. [0004] One is the vacuum preloading method. In this method, vertical plastic drainage boards are inserted into the foundation at a certain interval, and then a layer of coarse sand is laid on the foundation as a drainage layer, and criss-cross grid horizontal dra...

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Problems solved by technology

There are also several disadvantages in the above-mentioned curing method: firstly, the curing effect is general for the silt in the soft clay foundation; moreover, the stirring requirements are high during construction, and once the stirring is not uniform, it will affect and reduce the strength of the solidified soil; moreover, this method requires It consumes a large amount of curing agents such as cement and lime, which is costly and economical

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