Rotary Bowling - Kaitenshiki Boringu

Japanese: 回転式ボーリング - かいてんしきぼーりんぐ
Rotary Bowling - Kaitenshiki Boringu

...During drilling operations, mud logging is also carried out, in which samples of cuttings (fragments of rock crushed by the bit) and mud are continuously collected and examined.
[Classification]
Boring can be broadly divided into impact boring and rotary boring, depending on the mechanism for breaking up rocks. (1) Impact boring: A method of drilling in which a wire rope is moved up and down to slam the bit into the bottom of the hole, breaking up the rocks and allowing the drilling to proceed.

*Some of the terminology that refers to "rotary boring" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ボーリング作業中はビットで砕かれた岩石の破片である繰粉(くりこ)(掘屑(ほりくず))や泥水の試料を連続的に採取して調査する泥水検層も行われる。
[分類]
 岩石を砕く機構により衝撃式ボーリングと回転式ボーリングに大別する。(1)衝撃式ボーリング ワイヤロープを上下に動かしてビットを坑底にたたき付けて岩石を砕いて掘り進む方式。…

※「回転式ボーリング」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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