Innovation and Development of Coal and Gas Co-mining Technology in Huainan Mining Area

Huainan Mining Area is of low gas permeability, strong adsorption, and high gas. For the two major survival problems of coal mines under the situation of deep gas disasters, and through adopting the theory of pressure relief mining and gas extraction, we tackle key problems of “one hole and two eliminations” in the bedding of coal seams and“replacing the roadway with the hole” for drilling on the top of the roof, and optimize the traditional roadway and borehole gas extraction method to drilling gas extraction method, innovate coal a new coal and gas mining model. The result proves that the new mode extraction gas effect not only meets the safety production needs, but also eliminates the top and bottom pumping lanes, saves the drilling of the layer and reduces the cost of gas treatment by more than 30%. In order to upgrade the deeper coal seams to the conditions of strong outburst coal mining, and introduce the ground drilling construction technology and technology of side tracking horizontal wells and branch horizontal wells in the petroleum industry, the new plan for coal and gas mining in ground drilling is proposed.