江苏省沛县境内有矿井数座,由于井下采煤,形成煤矿塌陷地数百公顷,我们对这些塌陷地进行改造用来养鱼,取得了较好经济效益和社会效益。改造利用塌陷地的方式有以下几种。一是在塌陷区修造精养鱼塘。在条件较好的塌陷区建造鱼塘,每个鱼塘面积0.5～0.7公顷,深2～3米;在涝洼地建造鱼塘,塘口宽40～50米,塘埂兼做台田,台田面宽20～ Peixian County, Jiangsu Province, the number of wells in the seat, due to underground coal mining, coal mine collapse to form hundreds of hectares, we have to transform these collapsed land for fish farming, and achieved good economic and social benefits. There are several ways to transform and utilize subsidence land. One is to build intensive fish ponds in the subsidence area. Construction of fish ponds in better conditions in the subsidence area, each fish pond area of ​​0.5 to 0.7 hectares, deep 2 to 3 meters; construction of fish ponds in the waterlogged depression, pond mouth width of 40 to 50 meters, ponds also serve as Taiwan, Taiwan Field wide 20 ~