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Intermediate jacking station (ijs)
| Глоссарий по проходческим щитам (тоннелингу) |
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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Fabricated, английский
U-bend, which expands or contracts to compensate for pipe contraction or expansion.
Incorporated, английский
- Встроенный, вмонтированный
- Встроенный
Additional, английский
- Дополнительный 33
- Дополнительный; добавочный
Distribute, английский
- Распределять
- Распределять; распространять
- Распределить
- In the business store and education store, to get apps and other digital goods into the hands of employees or students.
- To allocate among locations or facilities, as in a data-processing function that is performed by a collection of computers and other devices linked together by a network.
- To move three or more objects so that there is an equal amount of space between them.
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Jacking shield, английский
- A fabricated steel cylinder from within which the excavation is carried out either by hand or machine. an articulated steering section and steering jacks are incorporated into the shield to allow it to be adjusted to control line and grade. the term is associated with traditional tunneling.
- A fabricated steel cylinderat the front end of which excavation is carried out either by hand or by machine. incorporated with the shield are facilities to allow it to be adjusted to control line and grade.
Thrust ring, английский
- 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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