Working in compressed air is a well recognised technique for tunnelling in soft, wet ground. This paper describes techniques for working in pressures of up to 15 bar, significantly above normal sta...

中文翻译：

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地下建筑：在高压压缩空气中工作

在压缩空气中工作是在湿软地面上掘进隧道的公认技术。本文介绍了在最高15 bar的压力下工作的技术，该压力明显高于正常压力。