A Construction Method for Electrochemical Treatment of Existing Embankment Soft Foundation

Abstract

The invention discloses a construction method for existing dyke soft foundation electrochemical treatment and belongs to the technical field of dyke soft foundation reinforcing engineering. A chemical solution is poured into the peripheries of electrodes to increase the contents of a gel object (Fe(OH)3) and a sediment (Mg(OH)2) for an electrochemical reaction and improve the reinforcing effect of a soil body and shorten the reinforcing time. By means of the combination of the electrochemical solution and the electrochemical reaction, the distance between two rows of electrodes can be increased so as to save materials for experiments. Grooves are reserved in the peripheries of the electrodes, the chemical solution is conveniently poured into the soil body on the peripheries of the electrodes in the construction process, and the concentration of the chemical solution in the soil body on the peripheries of the electrodes is conveniently measured. The positive electrodes and the negative electrodes of a power source are converted and the chemical solution is replaced, so that the electrochemical reaction of the electrodes in the soil body is more sufficient, the reinforcing range is wide, and reinforcing effect is more uniform. The construction method for the existing dyke soft foundation electrochemical treatment is simple in implementation process, high in operability, obvious in economic benefits and remarkable in treatment effect.

Description

technical field [0001] The invention belongs to the technical field of embankment soft foundation strengthening engineering, and in particular relates to a construction method for electrochemical treatment of existing embankment soft foundation. Background technique [0002] At present, the technical means used to deal with the soft foundation settlement of the roads and embankments that have been in operation mainly include: base grouting technology, soil replacement technology and pile foundation reinforcement technology. The soft foundation treatment of embankment engineering is different from the treatment of general road soft foundation. In addition to the settlement control standards of embankment engineering, the stability of the dike body in flood and dry seasons is also the focus of attention. Therefore, in the process of soft foundation treatment It is necessary to be able to effectively improve the strength of the soft foundation itself and achieve the purpose of ...

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Problems solved by technology

[0003] In prior art, following method is arranged: 1) carry out the construction method of settlement control on the subgrade of open-to-traffic road, this method needs to excavate original embankment in the implementation process, destroys the stability of existing embankment, during the construction process It is necessary to insert grouting pipes to the bottom of the embankment, the construction is complicated, and the strength of the soft body itself cannot be effectively solved; 2) By using a light soil to replace the original embankment fill, the stress on the attachment to the foundation is reduced, and the embankment is reduced. The goal of settlement failed to achieve the purpose of improving the strength of the soft foundation; 3) Electric geotechnical plastic drainage plates were arranged alternately in the weak foundation of the river embankment as negative and positive electrodes, and sodium sodium silicate solution and calcium chloride were respectively poured around the electrodes. Solution, the construction method of foundation reinforcement, this method needs to arrange special chemical solution testing equipment during the construction process, and the construction is difficult. During the construction process, only the cations in the chemical solution form gelling substances, and the gelation and aggregation formed 4) The method of arranging iron electrodes in soft rock for soft rock reinforcement, this method adopts a single electrode electrolysis reinforcement scheme, and fails to repeatedly consider the reinforcement of the combined action of electrolysis and chemical solution effect, longer processing time

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