Apparatus and method for stabilizing clay by microbiological-electroosmosis processes

Abstract

The invention discloses an apparatus and a method for stabilizing clay by microbiological-electroosmosis processes. The apparatus comprises culture dishes, nutrient solution dishes, a direct-current power supply, microbiological-electroosmotic devices, thermometers and cooling devices. The method includes the steps of firstly, burying cathodes and anodes of the microbiological-electroosmotic devices on two sides of clay to be treated, inserting the thermometers to the center line of the clay to be treated, and arranging the culture dishes and the nutrient solution dishes near the microbiological-electroosmotic devices; secondly, putting Bacillus pasteurii into the culture dishes, putting urea containing dissolved calcium salt into the nutrient solution dishes, culturing strains, and injecting the urea nutrient solution mixed with the strains and the dissolved calcium salt into the microbiological-electroosmotic devices and the clay; thirdly, turning on the direct-current power supply to perform electroosmosis while controlling the temperature to be lower than 50 DEG C. Compared with the prior art, the apparatus and the method have the advantages of good stabilization effect, high cost performance and convenience in operation without weather effect.

Description

technical field [0001] The invention relates to a device and method for reinforcing clay. Background technique [0002] The technology of microbial reinforcement of sandy soil was proposed by scientist Jason T. Dejong in 2006, and the bacteria used are Bacillus pasteuru (hereinafter referred to as Bacillus pasteuru). This strain is a strain capable of aerobic respiration. If it is cultivated in moist sandy soil with urea and calcium-dissolved liquid, it can produce metabolite calcium carbonate between soil particles, and calcium carbonate will stick between soil particles. , thereby improving the shear resistance of sandy soil. However, this method is only applicable to sandy soil, and cannot be realized in other soils or projects, and has limitations. Reuss first discovered electroosmosis in clay in 1809, and Casagrande first applied electroosmosis to civil engineering in 1939. After that, scholars from various countries have carried out some research work on the mechani...

AI Technical Summary

Problems solved by technology

The construction load of the electroosmosis method is small, and the drainage speed mainly depends on the electric permeability rather than the hydraulic permeability of the soil. It can quickly discharge free water and some weakly bound water in the soil, so it is only suitable for silt and silt with low permeability coefficient. Clay and sludge drainage, etc.

Images