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===适宜条件===
[[Image:Manually rotated jetting.jpg|thumb|right|200px|Manually rotated jetting手动旋转的水力喷射法]][[Image:Typical drill bit.jpg|thumb|right|200px|Typical drill bit典型钻头]]
Suitable for weakly cohesive sands and silts. Manual jetting is generally used up to depths of 35 meters.适用于粘着力弱的沙和淤泥。手动水力喷射法通常用于最深为35米的深度。