Method of reinforcing soil mass by W-type interlocking pile based on MICP technique

Abstract

The invention discloses a method of reinforcing soil mass by a W-type interlocking pile based on an MICP technique and belongs to the field of building fixation by biotechniques. The method comprisesthe following steps of placing an MICP grouting device in an appointed position of a pile body prior to pouring concrete to adjacent plain pile bodies of the W-type interlocking pile and connecting apressure grouting machine; and when it is needed to reinforce the soil mass, injecting a bacterial solution into one pipe and injecting a cementing solution into the other pipe through the pressure grouting machine, and in addition, inserting electrodes into the two plain piles at the most edge of the W-type interlocking pile. Permeability of the soil mass is reduced by means of the MICP technique, so that a good waterproof curtain is formed. Sudden welling in a foundation pit can be further inhibited to a certain extent, and meanwhile, soil masses on two sides of the foundation pit can be better reinforced by a foundation pit protecting way which combines the anti-bend W-type interlocking pile and the MICP technique reinforced soil mass, so as to prevent collapse of the foundation pit. The method of reinforcing the soil mass is easy to construct, can be repeatedly used, and is good in universality and wide in application prospect.

Description

technical field [0001] The invention relates to a method and a device for biologically reinforcing the soil around a pile based on the MICP technology, and belongs to the field of biotechnology fixed buildings. Background technique [0002] With the worldwide population growth and social development, more infrastructure construction is needed to meet people's production and living needs. However, construction land resources are very limited, and improvement (solidification) of land that cannot meet the needs of the project has become the only way to go. Traditional soil improvement methods often use cement or add a series of highly polluting chemical building materials for grouting to strengthen the soil. Cement has the problem of high energy consumption, and toxic chemical grouting may have harmful effects on surrounding soil, groundwater, minerals and other resources, even animals, plants, and human bodies, and may also endanger the health of operators during the grouting...

AI Technical Summary

Problems solved by technology

Cement has the problem of high energy consumption, and toxic chemical grouting may have harmful effects on surrounding soil, groundwater, minerals and other resources, even animals, plants, and human bodies, and may also endanger the health of operators during the grouting process

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