Method for controlling the direction of a shield tunneling machine and an apparatus therefor
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United States of America Patent
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Mar 26, 1996
Grant Date -
N/A
app pub date -
Feb 24, 1994
filing date -
Mar 22, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
When a shield tunneling machine is deviated from the scheduled line while being propelled, the deviation of the shield tunneling machine from the scheduled line is detected and according to the data obtained on the deviation of the shield tunneling machine from the scheduled line, the propelling direction of the shield tunneling machine is automatically controlled.
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