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徐州矿务局韩桥煤矿夏桥井是具有五十多年开采历史的老矿井。1987年末可采储量仅剩2032.1万吨,而建筑物下(以下简称“建下”)却积压着
Hanqiao Coal Mine in Xuzhou Mining Bureau Hanqiao Well is an old mine with a history of over 50 years of mining. At the end of 1987, there was only 20.321 million tons of recoverable reserves, while the backlog of buildings (hereinafter referred to as “built”) was backlog