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一、引言为开拓新区及其他目的,日木煤矿每年要新掘进20km左右的岩巷。围岩的掘进方法,除软岩外,以爆炸破岩为主。由于作为装载机的侧卸式机种的普及,可望提高生产率,但目前效率停留在4m~3/人·日的水平上。目前的部分断面掘进机只能切割抗压强度在50MPa以下的岩石,另外,就是能掘进抗压强度为100MPa以上的全断面掘进机,
I. INTRODUCTION To open up new areas and other purposes, the Riki Mukai tunnel is newly excavated about 20km a year. Surrounding rock tunneling methods, in addition to soft rock, rock blasting to the main. Due to the popularity of side loader models as loaders, it is expected that the productivity will increase, but at present, the efficiency stays at about 4 m 3 / man day. Some of the current section boring machine can only cut rock compressive strength below 50MPa, in addition, is able to drive the compressive strength of 100MPa or more full-face boring machine,