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Maximum allowable jacking force
| Глоссарий по проходческим щитам (тоннелингу) |
The largest jacking force that can be applied to the jacked pipe, allowing for an appropriate factor of safety.
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Appropriate, английский
Подходящий; соответствующий
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Inadvertent return, английский
The loss of drilling fluid, including slurry and lubrication, from the slurry or lubrication system. a special form of inadvertent return, where the fluid exceeds the strength and confining pressure of the ground and reaches the surface or waterway, is called a hydrofracture or frac-out.
Maximum anticipated jacking force, английский
The largest anticipated jacking force required to advance jacking pipe and machine along a drive.
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