Mostrando 1 - 3 Resultados de 3 Para Buscar 'district oyon mining', tiempo de consulta: 0.55s Limitar resultados
1
artículo
Formal mining in Oyón, Lima Region, is evaluated: the damages and benefits caused to water, soil and the population, its profits and what is delivered to the country by the Uchucchacua Mining Unit. It includes the analysis of what it contributes to the National Budget and to the Provincial and District Municipalities (economic, objective impact), the feeling of the population (social, subjective impact, perception), the effects of its actions on the environment (environmental impact, objective) and what is obtained by the company (economic profits, objective). There is an additional impact on subsidiary activities, basically suppliers, but in any case, given that the manufacturers of the really expensive mining equipment are foreign companies and the complexity of this analysis, it has been discarded, since it would be minimal for the country. There is an impact in terms of decreased un...
2
informe técnico
Complying with the Peruvian Government request in 1985, preliminaly survey as well as the subject feasibility study, infrastructure to be related to develop the mine and economic intention for the district was conducted at the Iscaycruz district, which indicated high potentiality of occurrence of copper, lead and zinc deposits under the scheme of "Cooperative Mineral Exploration" since 1979. The survey was carried out by the feasibility study team which comprised with six specialists from Japan International Cooperation Agency (JICA) and Metal Mining Agency of Japan (MMAJ) as a special participant together with the five Peruvian counter partners of Instituto Geológico Minero y Metalúrgico (INGEMMET).
3
artículo
The research analyzes the results obtained from applying the geotechnical monitoring model through convergences in the conduction tunnel of the Cheves hydroelectric plant - located in the district of Churín, province of Oyón, department of Lima. The conduction tunnel is 9693 meters long; during the underground excavation process using the New Austrian Tunnel Construction Method, which integrates the principles of the behavior of rock masses subjected to loads and the monitoring of the efficiency of underground construction. In the underground excavation, the geological contact between the Casma Group and the Chimú Formation is intercepted, which was affected by the post Intrusive Churín event, which increased the areas of weakness in the Casma Formation, such as geological faults filled with expansive minerals that are dipping to the ground. inside the tunnel shaft.The initial suppor...