...To prevent such unexpected flooding, preventive measures and countermeasures must be considered, such as drilling advance holes and installing backup pumps. In shallow, small-scale mines, the necessary amount of air can often be obtained by natural ventilation caused by the temperature difference between inside and outside the mine, but as the mine becomes deeper and larger, a large amount of air is required, and mechanical ventilation using fans (also called forced ventilation) becomes essential. The purpose of ventilation is to supply fresh air into the mine and expel dirty air, as well as to regulate the temperature inside the mine. *Some of the terminology that refers to "forced ventilation" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…このような不時出水を避けるために,先進ボーリングを行ったり,予備のポンプを設置しておくなどの予防措置や対策を考慮しておかなくてはならない。 浅く,規模の小さい鉱山では,坑内外の温度差による自然通気のみで必要な空気量が得られることが多いが,坑内が深く大きくなるにつれて大量の空気が必要になり,扇風機による機械通気(強制通気ともいう)が不可欠となる。通気の目的は,坑内に新鮮な空気を供給して汚れた空気を排出し,さらに,坑内の温度を調節することにある。… ※「強制通気」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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