我国是人口众多而土地资源贫乏的国家,土地资源问题尤为迫切。由于长期的尾矿积累和现时尾矿利用程度仍不太高,无论是国内或国外,尾矿的堆存都已占有大量的土地面积,并且,随着矿业 Our country is a country with a large population and scarce land resources. The problem of land resources is especially urgent. Owing to the long-term accumulation of tailings and the fact that the present tailings utilization level is still not too high, the accumulation of tailings occupies a large amount of land area both at home and abroad and, as the mining industry