Tweet Share

• Send by email

  Send by email

  

  Rock Engineering Aspects of the Cheves Hydropower Project Powerhouse and Transformer Caverns

  The Cheves hydropower project is located on Huaura River and Checras River, in the Andes Mountains of Peru (see Fig. 1). The Project is composed of three small dams and the underground works dominate the infrastructure, having a total of approximately 19 km of tunnels: The , between the Huaura Intake and the Checras reservoir presents a length of 2,580 m. The have a 9.693 m long (22.6 m and 30.1 m cross section), which has an upper section at a grade of two per cent and a lower section at 14 per cent grade. At the junctions of the lower and upper tunnels will be a surge tunnel of approximately 700 m long, also with a 14 per cent slope. The end of the headrace tunnel splits into two short penstock tubes, taking the flow to the generating units in the (60 m long by 32 m high by 15.5 m wide). The transformer cavern (27.5 m long by 14 m high by 11.2 m wide) is immediately adjacent, and a large access tunnel reaches both. Downstream, the flow is discharged into the 3.312 m long (24.9 m cross section) The powerhouse and transformer caverns at the Cheves Hydropower Project have been excavated in relatively hard rocks. The geology in the area of the caverns proved to be structurally complex given the presence of major tonalites intrusions with associated sub-horizontal shear joints. Careful consideration was given to aspects such as in situ stresses, rockmass strength.

  Recipient :

  Name ^* :

  E-mail address ^* :

  ^* Required fields

  Send   or  Cancel

• Print