| 摘要 |
<p>A method and apparatus for porting lateral connections in a lined pipeline from the lateral side (33) of the liner (35). An access hole (51) is formed through the liner material (35) covering the lateral connection. A cutting apparatus (600), such as a water cutter, is inserted through the access hole (51) with the nozzle (612) directed back towards the liner (35). Alternatively, the cutting apparatus (900) can be fed through the lateral towards the lined opening. The inside surface of the lateral pipe (33) is then used as a guide to aim the water jet at the precise location where the cut is desired as the nozzle (612) is revolved around the inside surface of the lateral to cut the liner (35) to the shape of the connection opening.</p> |
