| 摘要 |
A method for re-establishing side connections to an underground pipe after the same has been lined with a rigid lining of synthetic resin is disclosed, and in the method a cutter of the unit located in the pipeline moves in accordance with a pre-programmed contour which matches the contour of the side connection, thereby effectively and quickly to re-establish the side connection. The pre-programmed arrangement may be generated by sensing the side connection profile prior to the lining operation.
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