著者

野坂 和彦

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.103, no.1193, pp.417-424, 1987-07-25 (Released:2011-07-13)

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Kanouyama limestone quarry is the latest developed one in Japan, of which construction project was embarked on in June 1980 and accomplished in December 1984, and which has enabled Chichibu Cement Co., Ltd to secure a long term supply source of the raw material for its cement.Kanouyama quarry is located in the Kanouyama mountain which is 1, 106 meters high from the sea level, in the southwest area of the Gunma prefecture and at its border to the Saitama prefecture.The annual production copacity of the quarry is 3 million metric tonnes of crushed limestone.The quarry introduced a remote control operational system with the adoption of the high-tech communication control with optical fiber cables and television that enables them to operate machines in the pit from the control room outside it.Another feature of the quarry is its belt-conveyors transport system which consists of three spans of the belt-conveyors set between the quarry and the cement plant, which goes 22.7 kilo-meters through one city, two towns and one village.The longest in the three spans of the belt-conveyors is 14.089 kilo-meters and a new record in the world of its kind.