Windproof micro-pore pipeline spraying system for microbial sand stabilization and using method thereof

Abstract

The invention provides a windproof micro-pore pipeline spraying system for microbial sand stabilization and a using method thereof. The integral structure of the windproof spraying system is composedof longitudinal and horizontal micro-pore pipelines, windproof covering films and curved nails. According to the windproof micro-pore pipeline spraying system and the using method thereof, a microbialbacteria solution and a the nutrient solution additive are sprayed into a soil body through the longitudinal and horizontal micro-pore pipelines, the reinforced soil body is prevented from being blown away by large air through the wind-proof covering films, so that the overall stability of the reinforced soil body is improved; and the windproof micro-pore pipeline spraying system has the advantages that the multiplication rate of microorganism in the soil body needing to be reinforced can be guaranteed, a relatively closed environment is maintained so that the reinforcement reaction can be carried out continuously, and a certain strength and the certain reinforcing effect are obtained. The windproof micro-pore pipeline spraying system for microbial sand stabilization and the using methodthereof can be used in microbial sand stabilization and wind prevention projects and can also be used in desert control projects.

Description

technical field [0001] The invention relates to a windproof microporous pipeline spray system for microbial sand fixation and a method for using the same. The windproof microporous pipeline spray system is used for afforestation in deserts or windproof and sand fixation projects in desert areas, by covering the entire soil The vertical and horizontal microporous pipes spray microbial liquid and nutrient solution additives into the soil, and cover the surface of the vertical and horizontal microporous pipes with a windproof covering film to prevent wind, ensuring that the microbial proliferation and reinforcement process continues until the reinforcement is completed, especially for reinforcement According to the requirements, the slurry is sprayed into the soil in stages, and the reinforcement effect is achieved by progressive spraying. Microbial sand-fixation projects are carried out under windy, sandy and dry climate conditions to ensure the activity of microorganisms, prolo...

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Problems solved by technology

[0002] Microbial grouting reinforcement technology is a technology that uses microorganisms to induce calcium carbonate crystallization. Through the low-pressure transmission of microbial cells and nutrients to the loose sandy soil foundation, calcium carbonate gel crystals are quickly precipitated in the sandy soil pores to improve the mechanical properties of the soil. Among them An important application is to use this technology in desert control, mainly to prevent wind and fix sand, and accelerate the regeneration of vegetation. However, the microbial reinforcement process needs to be carried out at a relatively high temperature. When the average temperature is lower than 10 degrees Celsius, the basic reinforcement reaction will stop. In addition, after the initial spraying of microbial slurry, the soil strength gradually increases with time. Before that, the strong wind will blow away the surface soil particles, and the reinforcement effect cannot continue. Therefore, in the northwest and western regions of my country, the annual The suitable temperature time for construction is concentrated in the period from early summer to early autumn, usually from May to October, which greatly limits the time cost of windbreak and sand fixation.

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