Abstract: Aiming to the prominent problems such as inefficient transportation of gangue, environmental pollution and ground subsidence that existed in coal mine by traditional mining technology , This paper based on the analysis of coal source and quality in Ultra large coal mine, innovatively applies the technology of dense medium shallow groove in coal mine, design the separation system of coal-gangue of ten millions of tons of coal, realize the gangue notlifting ,bring forth a valuable experience that can learn from,can be copied, can promote for coal clean production and green mine construction innovation.