Device and method for one-dimensional microbial grouting reinforcement silt test

Abstract

The invention discloses a one-dimensional microbe grouting reinforcing silt test device and method. The device comprises a model groove, an air pressure device, a consolidating fluid bottle, a pressure slurry supply device, a recovery barrel, a water gas separation device and a vacuum pump, wherein the top of the model groove is connected with the consolidating fluid bottle through a hose; the consolidating fluid bottle is connected with the air pressure device through a hose; the bottom of the model groove is connected with the recovery barrel and the water gas separation device through hoses; the water gas separation device is connected with the vacuum pump; the lower end inside the model groove is provided with a separation plate with a plurality of holes; filter paper is laid on the separation plate. The upper pressing and lower suction method is used for grouting the silt; the upper part of the model groove is a pressure-resistant steel cover; a glass plate with holes is arranged at the lower part of the model groove; the filter paper is put on the glass plate with holes; the vacuum pressure applied under the glass plate with the holes can be uniformly distributed on the lower surface of the silt body. The device is used for performing grouting reinforcing test on the silt; various microbe reinforcing silt effect tests using various bacteria solutions under different conditions can be set.

Description

technical field [0001] The invention belongs to the technical field of grouting test, in particular to a device and method for one-dimensional microbial grouting reinforcement silt test. Background technique [0002] With the acceleration of my country's modernization process, a large number of soft soil foundations need to be dealt with during the construction of coastal cities. Grouting can strengthen the soft strata in situ and change its inherent physical and mechanical properties, so it is widely used in civil engineering. The existing grouting systems are mostly aimed at actual grouting operations and sand grouting. For experiments There are certain limitations in the research of grouting experiments on soils with poor properties such as indoor silt. [0003] Since the beginning of the 21st century, interdisciplinarity has shown strong competitiveness in dealing with some cutting-edge issues. Using the characteristics of microorganisms to grow, migrate and reproduce i...

AI Technical Summary

Problems solved by technology

Due to the low soil permeability coefficient, the effect of pressure grouting for silt grouting is not ideal

Due to the limitations of actual engineering, it is relatively difficult to study the grouting diffusion radius of pressure grouting

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