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Thrust ring
| Глоссарий по проходческим щитам (тоннелингу) |
- A fabricated ring that is mounted on the face of the jacking frame. it is intended to transfer the jacking force from the jacking frame to the thrust-bearing area of the pipe section being jacked.
- A steel ring that is placed against the cross sectional area of the pipe to ensure that the jacking forces are spread around the circumference of the pipe.
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Fabricated, английский
U-bend, which expands or contracts to compensate for pipe contraction or expansion.
Circumference, английский
- Окружность; периметр
- Окружность; периметр c1rm celestial infrared measurement (program) программа измерений ик-излучений звезд
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Intermediate jacking station (ijs), английский
A fabricated steel cylinder fitted with hydraulic jacks, which is incorporated into a pipeline between two specially fabricated pipe segments. its function is to provide additional thrust in order to overcome skin friction and distribute the jacking forces over the pipe string on long drives.
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