Microorganism negative-pressure surface soil reinforcement method

A technology of microorganisms and microbial bacterial liquids, applied in chemical instruments and methods, soil protection, building structures, etc., can solve the problems of low utilization rate of bacterial liquids and cementing materials, poor resistance to water flow erosion and wind erosion, and the thickness of the solidified soil layer Difficult to control and other issues to achieve the effect of avoiding erosion resistance failure, improving erosion resistance, and delaying the time of erosion flow

A technology of microorganisms and microbial bacterial liquids, applied in chemical instruments and methods, soil protection, building structures, etc., can solve the problems of low utilization rate of bacterial liquids and cementing materials, poor resistance to water flow erosion and wind erosion, and the thickness of the solidified soil layer Difficult to control and other issues to achieve the effect of avoiding erosion resistance failure, improving erosion resistance, and delaying the time of erosion flow

CN107119670AInactive Publication Date: 2017-09-01NANJING FORESTRY UNIV
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  • Microorganism negative-pressure surface soil reinforcement method

Examples

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Embodiment 1

[0032] In this example, a microbial negative pressure surface soil stabilization method is used for sandy soil surface protection, the method includes the following steps:

[0033] a. Buried negative pressure pipes 1 20cm below the surface of the soil body 4 to be reinforced, with a row spacing of 20cm, to form a negative pressure pipe network;

[0034] b. The concentration OD composed of Bacillus pasteurianus and culture medium 600 =1.5 microbial bacterial liquid, sprayed on the surface of the soil body 4 to be reinforced, and simultaneously turn on the vacuum pump 3 to extract the air and pore fluid in the soil body 4 to be reinforced through the negative pressure pipe 1, so as to accelerate the entry of the microbial bacterial liquid on the surface of the soil body 4 to be reinforced. Infiltration, when the bacterial liquid enters the negative pressure tube 1, turn off the vacuum pump 3 and let it stand for 4 hours;

[0035] c. Mix the pre-prepared 1.0mol / L urea and 1.0mol...

Embodiment 2

[0038] In this example, a method of microbial negative pressure surface soil consolidation is used for silt surface protection, and the method includes the following steps:

[0039] a. Buried negative pressure pipes 1 10cm below the surface of the soil body 4 to be reinforced with a row spacing of 20cm to form a negative pressure pipe network;

[0040] b. The concentration OD composed of Bacillus pasteurianus and culture medium 600 =1.5 microbial bacterial liquid, sprayed on the surface of the soil body 4 to be reinforced, and simultaneously turn on the vacuum pump 3 to extract the air and pore fluid in the soil body 4 to be reinforced through the negative pressure pipe 1, so as to accelerate the entry of the microbial bacterial liquid on the surface of the soil body 4 to be reinforced. Infiltration, when the bacterial liquid enters the negative pressure tube 1, turn off the vacuum pump 3 and let it stand for 8 hours;

[0041] c. Mix the pre-prepared 0.5mol / L urea and 0.5mol / ...

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Abstract

A microorganism negative-pressure surface soil reinforcement method comprises the steps that a, negative-pressure pipes 1 are buried at the position 10 cm to 20 cm below the surface of a to-be-reinforced soil body 4, the line spacing is 20 cm, and a negative-pressure pipe network is formed; b, microorganism bacterial liquid is sprayed to the surface of the to-be-reinforced soil body 4, meanwhile, a vacuum pump 3 is started to extract air and pore liquid in the to-be-reinforced soil body 4 through the negative-pressure pipes 1, infiltration of the microorganism bacterial liquid on the surface of the to-be-reinforced soil body 4 is accelerated, and when the bacterial liquid enters the negative-pressure pipes 1, the vacuum pump 3 is shut down, and standing is carried out for 4 h to 8 h; c, a pre-prepared gluing solution is sprayed to the surface of the to-be-reinforced soil body 4, then the vacuum pump 3 is started to extract air and pore liquid in the to-be-reinforced soil body 4 through the negative-pressure pipes 1, the to-be-reinforced soil body 4 around the negative-pressure pipes 1 is in an unsaturated state, and when the saturation degree is reduced to 25%, the vacuum pump 3 is shut down, and standing is carried out for 12 h; and d, the step b and the step c are repeated till the strength of the to-be-reinforced soil body meets the reinforcement requirement.

Description

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Claims

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Application Information

Patent Timeline
01 Sep 2017
Publication
CN107119670A