Status analysis of subsided land in Yanzhou coal mining area

Temporal and spatial distribution characteristics of subsided land in Yanzhou coal mining area were analyzed. The types, features, harms of subsided land were discussed and summarized. Several factors affected subsidence were identified. According to capital, availability of coal gangue, and input-output of reclamation, the probability of subsided land reclamation were analyzed, which is useful for guiding subsided land management.