Open well combined mining process for lower coal seam of end slope of strip mine

The invention relates to the technical field of open pit coal mine mining, in particular to an open pit mine end slope lower coal seam open well combined mining process. The method comprises the steps of 1, dividing a mining area open well joint mining operation area; wherein the well mining industry square is arranged at the upper part of a dumping site in an original strip mine, and the well field mining range is mainly a coal seam area which cannot be mined at the lower part of an end slope of the original strip mine; step 2; determining a mining system; 3, according to the effective safety distance, digging and coal mining operation is controlled in a grading mode; during coal mining, a coal face and surrounding rock are subjected to secondary support. According to the open-well combined mining technology for the lower coal seam of the end slope of the strip mine, a grading control technology is provided, an effective safety distance and a grading control concept are provided, a new method can be provided