Optimization And Application Of Mining Method For "Inverted S"-type Complicated Seam

Coal mining method of complicated seam has been one of mining technology problems. Due to the particularity of the mining conditions, mining method is still the key technology for such mines to improve mechanization level, the security situation, technical and economic indexes. In order to solve this practical problem, this paper takes "inverted S-type" complicated seam of Qianjuntai mine as the research background and uses coal surpac 3d modeling software to built the coal seam model. We have made synthetical evaluation and found the optimum with the model of many diferent mining methods.Thanks to this method,we conclude that pseudo inclined coal mining with shild support method will be good with large inclination and pseudo tilt toward movable top beam support mining method will be good with small inclination. At last, The overall study on mining process is based on the numerical simulation analysis and field tests, which reveals"Inverted S-type" complicated seam mining pressure laws. The result of this paper which may find widespread use in the similar coal seams has been successfully applied in Qianjuntai+570 level of Muchengjian mine and achieved remarkable economic and social benefits.