Elaboração de um plano de fogo para desmonte escultural na mina do projeto serra pelada

Abstract

The development of a mine involves countless stages, among them it disassembles him/it of rocks with explosives, accomplished through the elaboration, shipment and application of the fire plan. This stage is of great relevance, because, when badly dimensionado and/or applied, the fire plan can cart serious problems, as the sobrescavação, or until making unfeasible the project. The literature proposes several empiric formulas for calculation of the elements that they compose a fire plan, however front to the experiences and the common sense of the person in charge of the fire, several alterations can be done in the plan, for the improvement of the project. Now the mine of the Projeto Serra Pelada, in the which the progresses in his/her full section are accomplished through it dismounts with explosives, it is suffering some problems with the results of the you dismount accomplished. This way, this work comes to elaborate a fire plan for it disassembles him/it sculptural of the Projeto Serra Pelada, suggesting some alterations in the fire plan now used, mainly the reduction of the loads of the outline holes, that in case it is applied can take improvements for the project, reducing the sobrescavação, and consequently, decreasing the demand for shipment and transport and improvement in safety's conditions to workers and equipments. The elaboration of this plan happened with base in some relationships proposed by the literature, acquired information through professionals of the Empresa Colossus Minerals and considerations of the properties geomecânicas of the siltito, solid rocky that it composes the mine. The Project Skinned Mountain, of property of the Skinned Mountain Compania of Mineral Development (SPCDM), subsidiary company of COLOSSUS MINERALS LTDA in Canada, located in the Serra Pelada, rural area of the municipal district of Curionópolis-Pa.