A method for soil subsoiling based on pulsed gas explosion

Abstract

The invention discloses a method for deep loosening of soil based on pulse gas explosion. This method uses a continuous screw-into-the-soil device for deep loosening of the soil. The device uses a drive motor as the power source. It does not require artificial downward force, or only needs to use a small force. After entering the soil, the method of multiple and multi-point pulse air explosions is used for soil subsoiling. Using this method in the case of shorter treatment time and less high-pressure gas volume, the number of cracks in the soil subsoiling soil is large, the crack length is long, The gap width is wider, the bulk density of the soil is smaller, the total void ratio is larger, the broken soil rate and soil bulk are higher, the subsoiling is more uniform, and the permeability is better.

Description

technical field [0001] The invention relates to the field of deep loosening of soil, in particular to a continuous screw soil penetration device and a method for deep loosening of soil using the device. Background technique [0002] Soil is the basis for the survival of farming. Traditional farming methods mainly use tractors as the power to drive chisel / shovel type mechanical plowing methods, which need to destroy the ground surface and vegetation, large operating resistance, large wear and tear of equipment, high energy consumption, high operating costs and benefits lower issues. [0003] At present, in order to solve farmland soil compaction and realize deep plowing and deep application of protective tillage, a new technology of using air pressure splitting or air explosion principle to loosen soil in soil is emerging. But the earth-burrowing devices such as present air blast head or air blast gun generally adopt cutting type, percussion drill mode. For example: patent...

AI Technical Summary

Problems solved by technology

[0004] First, when encountering sharp objects such as stones and iron blocks inside the soil, it is not easy to work, which will cause damage to the impact head and reduce the service life

[0005] The second is that manual downward force is required to enter the soil by impact or cutting, which requires a lot of power, consumes a lot of energy, and takes a long time to enter the soil

[0006] The third is that the entire device will be continuously impacted, so devices with larger thickness, weight and volume will be used to meet the requirements of higher structure and hardness, which will make the whole device appear cumbersome and affect the working accuracy

[0007] Fourth, the torque of the entry head is small, it is not easy to break the soil, and the area of ​​the ground is small, which is not conducive to loosening the soil

[0008] Fifth, when taking out the soil head, it usually needs to be pulled out manually, which is laborious and troublesome

[0010] One is that the soil deep loosening is realized by a single high-pressure gas fracturing / piercing technology for the same gas explosion treatment point, and there is a long time for degassing, which will cause a large amount of gas consumption, and the effective time of the air pressure on the soil will be wasted. The economy is low, which is not conducive to popularization and application; the short deflation time will result in a faster drop in effective pressure, short gas action time on the soil layer, fewer fracturing fractures, shorter fracture length, narrow fracture width, and unsatisfactory effect And other issues;

[0011] Second, a small number of cracks are formed after a single gas explosion, and the high-pressure gas mainly escapes to the free surface (mainly the ground) through the cracks formed, and the effect on the soil in the non-cracked area is poor, resulting in the average bulk density of the soil, the overall bulkiness and the total The porosity does not change much, the deep loosening is uneven, and the application performance needs to be improved

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