Tao River Water Diversion
This machines was used on the first phase of the Water diversion project on the Tao river, in Gansu Province. The total length of the project is 13 km and is through abrasive sandstone. A rock excavating single shield working in open mode was used.
The original machine was supplied by others, but after struggling for 3 km, the machine was removed, and then refurbished and modified by CREG before returning to continue the tunnelling more successfully. During the second part of the drive after modification and refurbishment, a maximum advance rate of 1869 metres in one month was achieved, believed to be a record in China.
Basic information on the refurbished machine is…
|Location||Tao River Water Diversion, Gansu Province|
|No. of TBM||1 (refurbished)|
|Type of Machine||Single shield rock TBM|
|Outer TBM Diameter||6.75 m|
|Length, incl. Backup||84 m|
|Cutterhead Power||1925 kW Electric Drive|
|Typical Progress Rate||1500 m/month|
|Max.Progress Rate||1869 m/month|
|Drive length||10km after refurb|