随着国民经济的发展,对煤炭资源的需要量逐年增长,加之大批的暴露式煤田的不断发现和勘探清楚,今后将逐渐增多并转移到已知煤田的深部勘探和发现并勘探掩盖式煤田方面来。我国从1957年继发现掩盖式的兖州煤田以来,各个省区均先后勘探并评价 With the development of the national economy, the demand for coal resources increases year by year. In addition, the continuous discovery and exploration of a large number of exposed coal fields will gradually increase and shift to the deep exploration and discovery of known coal fields and exploration of concealed coal fields Come. Since the concealed Yanzhou coalfield was discovered in 1957 in our country, all provinces and autonomous regions successively explored and evaluated