著者

斎藤 敏夫 相原 三男 吉井 勝敏

出版者

一般社団法人 資源・素材学会

雑誌

資源と素材 (ISSN:09161740)

巻号頁・発行日

vol.122, no.12, pp.654-658, 2006-12-25 (Released:2009-10-02)

参考文献数

1

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The major mines around the world are taking the steps for enlargement of the dump truck size to improve the efficiency, and the yearly demand for the 300ton class dump trucks is increasing year by year.About 25% of the total world demand for such 300 ton class dump trucks is predicted to be the demand for the oilsand mines where the demand for the hydraulic shovels looks promising as well.The super large size excavator EX8000 was developed to meet such demand for the matching shovels for the 300 ton class dump trucks.The development was carried out based upon the experience from the existing super large size excavators, and emphasized on achieving the unsurpassed reliability and availability that is the absolute necessity for the loading machines in the mines.Both the first machines, the second machines of EX8000, and the third machines are delivered to the oil Sand mine in Alberta state in Canada. These machines are engaged in digging up the topsoil layer and the oil sand.