Coal mine gas fast solvent and application method thereof

Abstract

The invention discloses a coal mine gas fast solvent and an application method thereof, which relate to the technical field of coal mine gas processing. The coal mine gas fast solvent comprises cereal vinegar, food yeast, baking powder and alkali flour and is characterized in that the weight ratio of the cereal vinegar to the food yeast to the baking powder to the alkali flour is 10000: 100-800:1-8:0.5-5. When gas treatment is conducted by using the coal mine gas fast solvent, 10-50 times of water is added by weight to form a dilute gas fast solvent. Holes are punched in a coal layer and injected with the dilute gas fast solvent through high pressure. When punching the holes and injecting the solvent, the method comprises steps of a punching, b building an inner blocking layer , c building an outer blocking layer, d pouring a seal layer and e injecting the dilute gas fast solvent. The coal mine gas fast solvent and the application method thereof have the advantages of resolving the problem of difficulty in treating the coal mine layer gas fundamentally. After the treatment of an ordinary coal layer, more than 90% of gas is eliminated, and a gas bursting accident can be eradicated completely. The coal mine gas fast solvent and the application method are safe and efficient, convenient to operate, labor-saving and time-saving, and can shorten construction period effectively.

Description

technical field [0001] The invention relates to the technical field of coal mine gas treatment, and further uses biological bacteria to process the coal mine gas. Background technique [0002] There are five natural disasters in coal mining, namely gas, roof, fire, water, and mine dust, especially gas accidents are the most terrible. Although the state has adopted various measures for coal mines, gas accidents still occur from time to time, and it is hard to prevent them. Our country has a history of thousands of years since the discovery of coal resources in the Tang Dynasty, and the method of controlling coal mine gas is still the extraction process of the Tang Dynasty. [0003] Statistics show that at present, 80% of the 2.7 billion tons of coal produced in my country belong to high-gas mines. More than 70% of major coal mine accidents and disasters are gas accidents. There are more than 650 key coal mines in my country, including more than 560 mines with coal dust exp...

AI Technical Summary

Problems solved by technology

Although the traditional water injection can solve the shortage of mining, it also has many disadvantages ① The coal seam gas is squeezed out to the roadway through coal seam water injection and accumulates in large quantities, which does not guarantee personal safety

②Due to the high pressure of coal seam gas, it is easy to collapse the hole and fail to inject water, resulting in delays in work and time

③Using high-pressure water injection coal seams is prone to strong-sound coal cannons and roof pressure, and the roof is broken, and roof caving and slabs may occur.

⑤ During the water injection process, the water injection pipe will be fractured due to internal pressure and external pressure

[0010] At present, biological bacteria have been used to treat coal mine gas, but there are some problems: the proportion of materials used is not scientifically reasonable, there are still defects in the operation process such as drilling, and the effect of gas treatment is not good enough

[0011] If the method of sealing the hole with two tubes is used, the sealing is not complete, and the hole is shallow as a last resort. Due to certain defects in the sealing technology, it is easy to crack and cause water leakage; when the hole collapses, the hole cannot be sealed; when pressurized, Step by step pressurization is adopted to affect the progress; its permeation volume is small

The gas control rate is only about 60%

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