ソ連ЛК-3掘進機使用実績について
1966 年 82 巻 941 号 p. 751-754
詳細
1966 年 82 巻 941 号 p. 751-754
At Chikubetsu Coal Mine, we have begun excavation of prospecting mine road about 1, 700 meters long, using Russian PK-3 heading machine since February, 1966.
There are some difficulties in working, e. g. maintenance of PK-3's loop-feeder and transporting debris cars, we could perform heading of mine road in coal seam 20 meters per day.
