Comparative study on land reclamation technology in typical surface coal mine in steppe region between China and USA

The surface coal mine of China is mostly in the ecological environment fragile zone, and coal mining inevitably leads to a further deterioration of the ecological environment in mining areas. China faces the task of land reclamation and ecological restoration, which becomes a focus of researches. Based on the case study of North antelope Rochelle coal mine in USA and a surface coal mine of Inner Mongolia in China, the study has done the systematic research work on major technical measures on reconstruction of landforms, soil and vegetation etc. The study found that America laid emphasis on approximate the original landform reshaping, the investigation and protection of the native plants, post mining land monitoring. The study concluded that China should pay attention to regional coordination of landform reshaping, promote plantation of native plants, reduce tending management, strengthen post mining monitoring of land reclamation in surface mine in steppe region, so as to guarantee the sustainable use of the mine-area land.