Based on the strip mining research , for resolving the mining problem effectively under building currently, and Combining the condition as geologic, mining and mining method with QIAN JIA YING coal company branch, this paper research the strip mining cover with the huge thick soil layer, and design the relevant project.

Study on strip mining size under thick alluvium and thin bedrock;

Approach on move character of thick alluvium;

Study on mining degree and patterns of ground subsidence in condition of mining under thick unconsolidated layers;

Study on parameters of surface movement caused by top-coal caving mining under thick alluvial soil;

By analyzing the existing problems of case pulling from super thick unconsolidated stratum,the paper put forward a series of measures or plans in case design,pulling technique,restraining stratum swell and case protection,and it was proved to be applicable.

Horizontal movement characteristic study of the deep unconsolidated layers in mine yard;