December 6th saw the first CRCHI hard rock TBM exported to South America create an advance rate record of more than 1000m per month during construction of the San Gawang Hydropower Project in Peru.
The 5.83m diameter TBM is particularly suitable for tunnelling in the geological conditions present at the San Gawang Hydropower Station which consist of rock of good stability and displaying medium-high strengths.
During TBM assembly and commissioning, the CRCHI on-site service team worked closely with the owner and the contractor resulting in the TBM main body assembly completed, and a split launch was achieved in just 40 days. After the TBM was powered on, it took just two weeks to complete the single machine commissioning allowing the formal launch.
Since November 2022, the single shift advance rate of TBM has kept breaking new records: from 10m per shift to 16m and 20m per shift. The maximum single shift advance rate exceeded 26m and the maximum daily advance rate reached 46m. The cumulative advance rate in November reached 1007.9m, which has greatly reduced the construction period.
The San Gawang Hydropower Station is a key project on the Belt and Road Initiative in South America, and the first power project in Peru that has been invested in by Chinese enterprises. The total installed capacity of the San Gawang Hydropower Station is 209.3MW, and the designed annual power generation is 1.25bn kWh.
After completion and when in operation, it will greatly promote the optimal distribution of regional water resources and promote sustainable economic and social development in South America.