Resumen de Optimización en la prospección de sondeos en minería, mediante técnicas de geoestadística multivariante
- español
En esta tesis se ha supuesto que para llevar a efecto una explotación minera es necesaria una buena planificación de los sondeos con recuperación de testigo continuo, previos a la evaluación de las reservas. Esta planificación puede realizarse mediante un tratamiento geoestadístico, a partir de los datos obtenidos de las distintas variables de estudio: potencia de la capa, contenido de azufre, poder calorífico, contenido en cenizas, cotas de techo y de muro de la capa o capas a investigar. Se han realizado tres hipótesis de distintos mallados para la realización de los sondeos, y una aplicación práctica, de una explotación real, donde los sondeos fueron hechos indiscriminadamente, obteniéndose datos de potencia real de la capa atravesada y sus contenidos de azufre, cenizas y poder calorífico, en una superficie de investigación equivalente a 8.745.550 m2. El objetivo de esta investigación pretende minimizar el número de los sondeos requeridos para la evaluación de las reservas.
- English
In this thesis, it has been assumed that in order to mining, good planning of the drills with recovery of witness, prior to the evaluation of the reserves, can be done through a geostatistical treatment, with data obtained from the different variables of study: power coating, sulphur, ash content, calorific power dimensions of ceiling and wall of the layer or layers to investigate.
Having made three hypothesis, of different rifted for conducting the drills, and a practical application, of a farm, where the polls were made indiscriminately, resulting in, a set of data of the real power for the crossed layer, and its content in sulphur, ash and its calorific power, on a 8.745.550 m2 equivalent research surface.
The procedure followed in this research which main goal is to minimize the number of drills required for the evaluation of the reserves, can be summarized in the following sections:
1. An analysis of the variability of the layer of coal power.
2. Georeferencing of the drills, in the different meshes of the three hypotheses raised, as well as the real exploitation for its subsequent geostatistical treatment.
3. An evaluation of the reserves of the coal-bed, both from the study of the power of the coating, as well as the variables dimension of wall and ceiling.
4. An academic methodology for the anisotropic study.
5. A georeferenced three-dimensional spatial representation of the layer to investigate, identifying the different variables of study, using software ArcScene.
6. An analysis, on the methodology of cross-validation, regarding the dimensions of ceiling and carbon layer wall investigated, as well as any variable of study.
7. An analysis between the hypothesis and the actual exploitation in terms of evaluation of reserves.
