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无煤柱开采是技术经济效益较好的一种开采方法,已被煤炭部列入全国新技术推广项目,要求在低沼气和无自燃危险的煤层普遍推广。为了使易自燃煤层逐步应用无煤柱开采技术,部先后在一些局、矿安排了试验研究工作。我省从1980年以来在重庆大学采矿系的积极合作下,也在4个矿井开展了试
Non-pillar mining is a kind of mining method with good technical and economic benefits. It has been listed by the Ministry of Coal as a national new technology promotion project and is required to be widely promoted in coal seams with low biogas and non-spontaneous combustion. In order to gradually apply the coal-free pillar mining technology to the spontaneous combustion coal seam, the Ministry has arranged experimental work in some bureaus and mines. Since 1980, the province has conducted a trial in four mines with the active cooperation of the mining department of Chongqing University