太平洋炭砿におけるライナー坑道を用いた採炭
1983 年 99 巻 1146 号 p. 648-650
詳細
1983 年 99 巻 1146 号 p. 648-650
The main mining system at Kushiro Colliery is the longwall mining system with shield supports and drum shearer. On the occasion of this mining, generally main gate road, tail gate road and face road must be driven by means of continuous miner before mining. However, with the increase of mining depth, successive maintenance of gate roads has been confronted with difficulties.
Accordingly, for the purpose of solving this problem, liner road system was investigated and adopted to the longwall mining system. In the liner road system, at the beginning main gate road and face road are driven, and tail gate road is constructed in goaf with advance of face.
From September 1979 to February 1983 this liner road system has been adopted to 17 mining panels. Total distance of liner road was 7, 644 m and total coal productions amounted 2, 168, 010 tons (clean coal).
In the future longwall mining plan, the proportion of liner road system will increase. Furthermore, in order to increase the recovery and reduce the cost, the new technical and economical improvement of liner road system is examined and the first step has put into practice
