Coal mining subsidence in Jining city has a huge amount of square. Reclamation of subsided land is very difficult. Because there are not enough material for filling reclamation collapse. Canal waterway dredging and lake mud filling are a good solution to this problem. On the basis of analyzing present condition of the distribution and damage degree of mining subsidence in Jining city, governance model has been analyzed in this paper. According to useful references of the canal waterway dredging, lake mud filling over the years, feasiblity of pumping lake water for land reclaimation in Nansihu collapse areas has been discussed.