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近几年来,各地乡镇企业的发展,对农业生产起着重要的作用。但是在采煤开矿、修路、冶炼等过程中不妥善处理矿渣、尾沙将会增加水土流失,引起生态环境恶化。 一、乡镇采煤开矿迅速发展,弃土弃石排渣量随之增加。由于乡镇煤矿投资小,见效快,所以采煤业发展很快。例如山西省左云县1978年煤产量87万吨,1984年煤产量达到500万吨,其中乡镇煤矿的产量为446万吨,占全县煤产量的90％。该县除煤外,还
In recent years, the development of township enterprises in various places has played an important role in agricultural production. However, during the process of coal mining, road construction and smelting, slag is not handled properly and tailings will increase soil erosion and cause deterioration of the ecological environment. First, the rapid development of township mining and mining, abandoned spoons of waste slag increased accordingly. Due to the small investment in township coal mines, quick, so the mining industry developed rapidly. For example, Zuoyun County in Shanxi Province produced 870,000 tons of coal in 1978 and 5 million tons of coal in 1984, of which 4.46 million tons were produced by township coal mines, accounting for 90% of the total coal production in the entire county. In addition to coal in the county, also