trackless mining

Japanese: trackless mining(英語表記)tracklessmining
trackless mining

...Monorail carriages run on ropes driven by small hoists, and some are connected to a diesel-engine motor vehicle. In recent years, trackless mining, which does not lay tracks but instead uses dump trucks (which can go up and down gradients of up to 14 degrees) or jeeps to transport material through tunnels, has become more common. However, compared to locomotive transport, the tunnel cross-section needs to be larger.

*Some of the terminology that refers to "trackless mining" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…モノレールの搬器は,小型巻上機で駆動されるロープによって走行するもののほか,ディーゼルエンジンを備えた原動車を搬器に連結して走行するものもある。 近年,トラックレスマイニングtrackless miningといって,軌道を敷設せず,ダンプトラック(14度までの勾配なら登り降りができる)やジープを用いて坑道運搬を行う鉱山が増えてきている。しかし,機関車運搬の場合と比較して,坑道断面を大きくとる必要がある。…

※「trackless mining」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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