花岡鉱山堂屋敷鉱床の採鉱法について
1956 年 72 巻 814 号 p. 183-188
詳細
1956 年 72 巻 814 号 p. 183-188
Doyashiki deposits of the Hanaoka Mine, had been mined by Drift Caving method in the past day, but owing to several accidents by alluvial subsidence, ecessive ore production in the 2nd World War time and underground water floods at July 1947, these deposits had been in the crisis of desolation.
Several kinds improved mining method was adopted for our ore bodies which have various underground conditions.
Typical mining methods are as follows:
(1) Drift Caving
(2) Cut and Fill stoping by long blast holes
(3) Block Caving
(4) Semi-Squar set stoping
(5) Top Slicing by Kappe System.
