Gomez-Ortiz D.,ESCET |
Martin-Velazquez S.,ESCET |
Martin-Crespo T.,ESCET |
De Ignacio-San Jose C.,ESCET |
Near Surface Geophysics | Year: 2010
Mining activity in the Iberian Pyrite Belt, on the south-west of the Iberian Peninsula, has generated a great amount of mine tailing ponds, which once the extractive activity is finished, are abandoned and become a serious environmental problem. Here we present the results of applying the electrical resistivity tomography (ERT) technique to characterize the abandoned mine ponds in two sites: Monte Romero and Mina Concepción. ERT has allowed us to determine both the general geometry of the pond's base and the maximum thickness of the mine tailings. In all cases, the resistivity contrast between the infilling and the bedrock is high enough to clearly define the bottom pond boundary. The low-resistivity values (lower than 5 ωm) obtained for the infilling are explained by the high concentration of pyrite in the tailings and the occurrence of acid waters. Whereas the Monte Romero mine pond is almost completely saturated with water, in Mina Concepción it has been possible to identify the presence of inner acid water flows, the outlet of which through the damaged dyke originates a spilling of acid waters to the Odiel River. No low-resistivity water flows through the base of the ponds into the bedrock have been observed, indicating a good isolation of the base of the studied mine ponds. © 2010 European Association of Geoscientists & Engineers.
Raj Kumar A.,ESCET |
Ram Jeyanth K.R.S.,ESCET
IEEE-International Conference on Advances in Engineering, Science and Management, ICAESM-2012 | Year: 2012
Developing renewable energy can help India increase its energy security, reduce the adverse impacts on the environment, lower its carbon intensity, contribute to more balanced regional development. But whether the renewable energy will really be able to solve these issues effectively or will it give up to fossil energy. This paper deals with the necessity of renewable energy and the potentials and barriers in implementing the functions of renewable energy in Wind, Solar, Biomass etc and also offers reasonable solutions to financial viability, infrastructure setup and approvals for renewable energy projects. © 2012 Pillay Engineering College.