Shield tunneling machine
A shield tunneling machine has a shield body (1) and a cutter head (2) rotatably provided at the forward end of the shield body (1) in the excavation direction. Abrasive jet spray nozzles (10a) for spraying abrasive jet water are movably provided on the cutter head (2). Obstacles (18) encountered du...
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| Format: | Patent |
| Sprache: | eng ; fre ; ger |
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| Zusammenfassung: | A shield tunneling machine has a shield body (1) and a cutter head (2) rotatably provided at the forward end of the shield body (1) in the excavation direction. Abrasive jet spray nozzles (10a) for spraying abrasive jet water are movably provided on the cutter head (2). Obstacles (18) encountered durin excavation can be broken efficiently with high cutting quality by properly controlling the movable abrasive jet spray nozzles (10a) according to the size and configuration of each particular obstacle (18). |
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