Application of remote sensing interpretation in waterlogged area resulted from mining subsidence and water quality monitoring

摘要

In order to solve the problems of waterlogged scope resulted from mining subsidence and water quality, this paper talcing Nansi Lake in Shandong Province as an example applies remote sensing interpretation technique in the images overlaying of different time phases in flood period and drought period. The results show that the difference of water area is 168.95km2 above two-stage dam of Nansi Lake between flood period and drought period, three kinds of water body and large wetland are marked by images, the first water area is 13.34km2, the second is 102.73km2, the third is 241.28km2, there is another hydrophytic wetland or shallow swamp whose area is 345.52km2, and according to TM image analysis, the black image region of mine is ponding subsidence, which provides significant basis for delineating ponding of mining subsidence and development and utilization.