一、前言太平洋煤矿沿层掘进使用的是美国侨伊公司制造的连续采煤机和梭车,并用由3个构件组成的拱型金属支架进行支护。年掘进长度为21～22km。采用连续采煤机和梭车大约有30年,在此期间,对掘进用的掩护支架和金属支架搬运车等方面的技术进行研究。但是,目前仍 I. Preface The coal mining along the strata of the Pacific coal mine is carried out by a continuous coal shearer and shuttle car manufactured by the U.S. Overseas Iranian Company and supported by an arched metal bracket consisting of three components. The annual tunneling length is 21 ~ 22km. Approximately 30 years have passed with continuous shearers and shuttles, during which time the technology for the excavation of shields and metal carriers has been studied. But, still