Chuquicamata Mine – Access Tunnel



Cost of works:


Period of Activity:

2010 - 2010

The Chuquicamata mine is the world largest open pit copper mine (4.3km-long, 3km wide and 800m deep). It is located 1,650km north of Santiago, Chile. The mine, popularly known as Chuqui, has been operating since 1910. Despite being operational for over 100 years. In 2011, Chuquicamata produced 443.000 metric tons of copper.

— Project Description:

The project involves transforming the world's largest open pit in to a modern and efficient, giant underground operation to exploit some of the resources that remain under the current site. The project involves the extraction through macro blocks with the extraction process "block caving" in an underground mine comprising four levels of production, the main access tunnel of 7.5 kilometers corresponding to the first shot July 6, 2012); five ramps clean air jet, and two exhaust air shafts, among many other works that involve construction, horizontal and vertical developments totaling 121 kilometers.

— Description of Services:

Design of the access tunnel for personnel and transport of the extracted ore, based on risk analysis. Probabilistic analysis of construction cost and times.
  • Design of the tunnels on the base of a risk analysis
  • Identification of the geomechanical risks and analysis of their interaction
  • Identification of the design solutions for the mitigation of the geological and geomechanical risks
  • Re-evaluation of the project on the base of the construction risks
  • Probabilistic analysis of construction costs and times by means of DAT program.

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