Oct 07, 2019 Production from the mine was started in October 2008, and is also a major opencast coal mine in China. Hei Dai Gou coal mine Estimated to contain billion tonnes of recoverable coal reserves, the openpit Hei Dai Gou coal mine is loed in the middle of Zhungeer coal field in the Inner Mongolia Autonomous Region of China.
· This paper presents a phase planning method specially designed for coal deposits with nearly horizontal, bedded coal seams. The geology of this type of deposit is modeled into a column model, instead of a block model, to avoid coalrock mixing in blocks. A nested pit generation algorithm is developed for producing a series of nested, leaststrip ratio pits with a column model as its input.