三井芦別炭鉱の芦別斜坑開さく
1983 年 99 巻 1146 号 p. 626-630
詳細
1983 年 99 巻 1146 号 p. 626-630
Ashibetsu Colliery has been working steeply inclined seams for 40 years. The expanded and complicated structure calmed by tne rapid increase of mining depth urged the fundamental reformation of the colliery. “Ashibetsu Long-term Stabilization Plan” has been denved trom such situation and the decision was made to develop Ashibetsu Slope. The construction work of Ashibetsu Slope, started in Oct. 1981, encountered many difficulties and was completed at -790m level in Apr. 1982. Ashibetsu Colliery presents here the report of the construction work of the slope which has contributed the colliery much more than expected.
