Auscultation of a Dam for Mining Restoration in Quebec, Canada
Coulibaly Yaya, Li Zhen Cheng*, Tikou Belem and Sylvain Lortie
University of Québec in Abitibi-Témiscamingue, Canada
- *Corresponding Author:
- LiZhen Cheng
University of Québec in Abitibi- Témiscamingue, Canada
E-mail: [email protected]
Received Date: October 20, 2016; Accepted Date: December 05, 2016; Published Date: December 08, 2016
Citation: Yaya C, Cheng LZ, Belem T, Lortie S (2016) Auscultation of a Dam for Mining Restoration in Quebec, Canada. J Civil Environ Eng 6:259. doi: 10.4172/2165-784X.1000259
Copyright: © 2016 Yaya C, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
The tailing management is a long term concern for environment and social security. Following the discovery of a new gold mineralization, a mining company aims at reusing one of tailings storage facility at the mining site. However, there is a small treated water reservoir (polishing pond) downstream of the Northwest dam. It is therefore important to know the present state of the Northwest dam’s internal structure. Geophysical methods of electrical resistivity and georadar were used for the auscultation of the Northwest dam. Numerical models were subsequently used to assess the geotechnical behavior of the dam in different deposition situations by simulating the restoration.
The image processing results of georadar data show a layered structure near the surface. Changes in electrical resistivity offer deeper information than georadar. The lateral variability of the electrical resistivity corresponds to heterogeneity within each layer. As we cannot collect samples for the characterization of materials, the geophysical interpretation results help to estimate the compositional structure of the dam; ultimately it helps in numerical modeling on the safety factor estimation.