No.12 Mine, Pingdingshan Tianan Coal Company Limited

为解决煤矿深部开采瓦斯含量大、瓦斯压力大、突出危险性高、煤层透气性低,以及开采极薄煤层作为保护层产生大量矸石和薄煤层无法有效回收利用等问题,针对十二矿复杂煤层动力灾害机理、煤与瓦斯协同安全高效开采以及采动环境低损害开采进行研究,实施薄煤层开采作为保护层,实现多煤层开采的区域消突和煤矿瓦斯的综合抽采利用。在此基础上,配套井下岩石分选工艺及回填开采工艺,在实现安全高效开采的同时,减少采动环境损害,解决大量矸石污染环境的问题。保护层开采治理的工作面在单产上,较低位巷冲孔治理工作面单产量提高30%;煤矸分选回填年减投增效和瓦斯发电及余热利用经济效益显著,实现千米深井安全高效绿色开采。

In order to solve the problems such as large gas content, high gas pressure, coal and gas outburst, low permeability and mining of extremely thin coal se am as a protective layer, it could not effectively recover the coal gangue and thin coal.Study on the complex coal mine dynamic disaster mechanism, coal and gas coord ination and safe and efficient mining and mining environment low damage mining in No. 12 coal mine, the implementation of thin coal seam mining as a protective layer t 0 achieve multi-coal mining area outburst and coal mine comprehensive mining use. On this basis, supporting the underground rock sorting process and backilling tech nology, while realizing safety and efficient mining to reduce the mining environment damage and solve a large number of gangue environmental pollution issues.The sin gle product of protection layer mining face, the lower position of the punching face of the single production increased by 30% .Theeconomic benefits of coal gangue sep aration and refilling of annual subtraction and gas generation and waste heat utilization were significant to achieve safety and high efficient and green mining.