| 摘要 |
A method for dredging an inside of a sewerage pipe is provided to remove the sewerage pipe and tree roots clearly and to prevent a clogged phenomenon of the sewer by cleaning the inside of the sewerage pipe with a high pressure jetting cleaner and using a core cutter. Winch devices are installed at two ends of the predetermined section by setting an interval of dredging the inside of a sewerage pipe. A rotary shaft is injected into the sewerage pipe from a manhole. A winch rope is fixed to the rotary shaft. Rakes are fixed to the winch ropes. After removing the sewage by a sewer dredging car, the inside of the sewerage pipe is jetted by using a high pressure jetting cleaner. An unmanned camera is fixed to the winch rope and injected to the inside of the sewerage pipe. The sewerage pipe and the tree roots are clearly checked and cut off by using a core cutter. The high pressure jetting cleaner is used for high pressure jetting cleaning. |
