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资源开采与地表下沉概况在当今社会强烈要求资源开发要与环境和社会生活相协调的形势中,矿害问题是个很难解决的问题。根据美国矿业局1979年的估计,美国煤、金属和非金属矿的采掘面积为32000平方公里。产生地表下沉危害的面积为8000平方公里,其中95%即7600平方公里是开采烟煤形成的,开采无烟煤形成的空洞面积只有300平方公里,因此,在产生地表下沉危害的面积中,煤矿采空区占99%以
Resource exploitation and surface subsidence Overview In today’s society strongly demands the development of resources to be coordinated with the environment and social life, the issue of mining is a difficult problem to be solved. According to a 1979 estimate by the United States Bureau of Mines, the U.S. mining area for coal, metal and non-metallic minerals is 32,000 square kilometers. Surface damage caused by the surface area of 8,000 square kilometers, of which 95% or 7600 square kilometers is the exploitation of bituminous coal formation, mining anthracite formation of the hollow area of only 300 square kilometers, therefore, in the area where the surface subsidence hazards, coal mining Empty area accounted for 99%