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矿井内拒爆问题的研究分为两个部分进行:一部分于1984年2月在安全研究煤矿开展,另一部分于1985年4月在俄亥俄州克莱斯维尔团结煤炭公司的黑坑煤矿进行。在安全研究煤矿每次放炮都是布置成由三个直径各为4.4cm,深度各为227cm 的炮眼所组成的一排形式。曾通过改变炮眼间距
The study of the problem of rejection in the mine was divided into two parts: one was conducted at the Safety Research Coal Mine in February 1984 and the other was at Heikeng Coal Mine United Coal Company in April 1985 in Clementsville, Ohio. In the safety study, each blast of the coal mine was arranged in a row consisting of three blastholes each with a diameter of 4.4 cm and a depth of 227 cm. Have changed by the hole spacing