開かい坑こう

か

い

こ

う

Meanings

1

noun, noun or participle which takes 'suru'

opening of a mine; mine development

Technical term used in mining contexts; refers to the act of opening or developing a mine.

この地ち域いきでは新あらたな炭たん鉱こうの開かい坑こうが計けい画かくされている。
The opening of a new coal mine is planned in this area.
開かい坑こう作さ業ぎょう

に

は

多た

額がく

の

資し

金きん

が

必ひつ

要よう

だ

。

Mine development work requires a large amount of capital.

採さい掘くつ
採掘 refers to the actual extraction of minerals, while 開坑 is specifically the opening or development of a mine.

Compound of 開 (kai, 'open') and 坑 (kō, 'mine pit'). The exact historical derivation is uncertain, but the kanji directly reflect the meaning.