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本文系统的介绍了“三下”压煤开采技术在国内的研究及部分应用情况,如果能够在保证地表沉陷符合国家规定的前提下,最大限度地回收“三下”压煤,将为公司带来显著的经济效益和社会效益。
This paper systematically introduces the research and some applications of “three under” coal mining technology in China and if we can maximize the recovery of “three times” coal under the premise of ensuring that the surface subsidence conforms to the state regulations, The company will bring significant economic and social benefits.