Comprehensive gas drainage arrangement treatment method for quick extraction of gas on fully-mechanized surface

Abstract

The invention discloses a comprehensive gas drainage arrangement treatment method for quick extraction of gas on a fully-mechanized surface. When an upper groove and a lower groove on a first working surface are excavated, an upper groove of a next working surface is excavated, and the second upper groove is excavated into a roadway, so that original construction on the first upper groove of hole-drilling drainage in high-position roof fractures and drainage through buried pipes is replaced by the construction on the upper groove of the next working surface. The method has remarkable economic and social security benefits by achieving gas treatment effects, coal belt transport and manual material transport in the first lower groove are not affected by gas treatment engineering such as high-position fracture hole-drilling construction and wall-penetrating hole-drilling construction in the second upper groove, normal running of equipment and mechanical and electrical facilities on an equipment train in the first upper groove is protected, and the problem that gas is beyond the limit on air return corners especially on upper corners is fundamentally solved.

Description

Technical field:

[0001] The invention belongs to the technical field of gas comprehensive drainage arrangement in coal mine fully mechanized mining face, and in particular relates to a control method for gas comprehensive drainage arrangement in fully mechanized mining face of rapid recovery. Background technique:

[0002] Dangjiahe Coal Mine is located in Fuxian County, Yan'an City, Shaanxi Province. It belongs to the Huangling Mining Area. It is adjacent to Huangling No. 1 and No. 2 Mine in the east and south respectively. 93km², the mined coal seam is Jurassic Yan'an Formation No. 2 coal, the buried depth is 300m-600m, the average coal thickness is 1.7m, the geological reserves are 188 million tons, the geological structure is simple, the coal seam dip angle is 0°-3°, and the gas identification level is low gas mine.

[0003] The 104 working face started mining in June 2015. The general situation of the working face and the status of gas and drainage during the mining pr...

Examples

Embodiment Construction

[0021] see Figure 3-Figure 7 , New adjustments have been made in the excavation layout, ventilation mode, and drainage method of the 106 fully mechanized mining face. The specific methods adopted for the mining space layout and gas control of the 106 fully mechanized mining face are as follows:

[0022] Working face 106 has a strike length of 2,400 m, an inclination width of 245 m, and delineated reserves of 1.3 million tons. According to the drainage situation of the previous working face, the gas concentration and scalar volume of the high-level cracks on the roof are high, and the gas gushing out of the goaf is large. The overall idea of ​​gas management is adjusted to: use large drilling rigs to construct large-aperture and high-density drilling holes, increase the drainage of high-level cracks in the roof, and increase the drainage of gobs. When the working face is mined back, it is affected by coal belt racks, materials, equipment trains, electrical equipment, etc., and...

Technical field:

[0001] The invention belongs to the technical field of gas comprehensive drainage arrangement in coal mine fully mechanized mining face, and in particular relates to a control method for gas comprehensive drainage arrangement in fully mechanized mining face of rapid recovery. Background technique:

[0002] Dangjiahe Coal Mine is located in Fuxian County, Yan'an City, Shaanxi Province. It belongs to the Huangling Mining Area. It is adjacent to Huangling No. 1 and No. 2 Mine in the east and south respectively. 93km², the mined coal seam is Jurassic Yan'an Formation No. 2 coal, the buried depth is 300m-600m, the average coal thickness is 1.7m, the geological reserves are 188 million tons, the geological structure is simple, the coal seam dip angle is 0°-3°, and the gas identification level is low gas mine.

[0003] The 104 working face started mining in June 2015. The general situation of the working face and the status of gas and drainage during the mining pr...

Examples

Embodiment Construction

[0021] see Figure 3-Figure 7 , New adjustments have been made in the excavation layout, ventilation mode, and drainage method of the 106 fully mechanized mining face. The specific methods adopted for the mining space layout and gas control of the 106 fully mechanized mining face are as follows:

[0022] Working face 106 has a strike length of 2,400 m, an inclination width of 245 m, and delineated reserves of 1.3 million tons. According to the drainage situation of the previous working face, the gas concentration and scalar volume of the high-level cracks on the roof are high, and the gas gushing out of the goaf is large. The overall idea of ​​gas management is adjusted to: use large drilling rigs to construct large-aperture and high-density drilling holes, increase the drainage of high-level cracks in the roof, and increase the drainage of gobs. When the working face is mined back, it is affected by coal belt racks, materials, equipment trains, electrical equipment, etc., and...

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