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Pilot tube method
| Глоссарий по проходческим щитам (тоннелингу) |
- A multistage method of accurately installing a product pipe to line and grade by use of a guided pilot tube followed by upsizing to install the product pipe. the pilot tube method does not fit within the definition of microtunneling.
- A multi stage method of accurately installing a product pipe to line and grade by use of a guided pilot tube followed by up-sizing to install the product pipe
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Definition, английский
- The fidelity of a television system to the original scene.
- Also called resolution. the fidelity with which detail is reproduced by a television system ranging from a fuzzy to a sharp appearance.
- The fidelity of reproduction of the pattern edge relative to the original master
- N дефиниция, определе- ние
- A verbal representation of a concept which serves to differentiate it from related concepts and allows humans to recognize and agree on the concept.
- Description of linear demarcation sensitivity or the detail sharpness of object outline in a radiologic test image. it is a function of screen type, exposure geometry, radiation energy, and characteristics sensor (such as film).
- Описание чувствительности к линейной демаркации или четкости контуров объекта на радиологическом контрольном изображении. это зависит от типа экрана, геометрии экспозиции, энергии излучения и характеристик датчика (например, пленки).
Microtunneling, английский
A construction method to install pipe into the ground with no imposed size limitations provided the following are used during construction:
Microtunnel, английский
A remote control method of installing pipes using a fully guided microtunneling machine.
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Trailing can, английский
A principal module that is part of a shield machine such as an mtbm or tunnel boring machine (tbms); its use depends on the installation dimensions required and the presence of an articulated joint to facilitate steering.
K-rail, английский
A modular concrete or plastic barrier used to separate lanes of traffic. also known as jersey barrier.
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