The Selection and Rational Evaluation of Surface Mining Technology System

Abstract

The most important part of surface mining design is to select the rational technology system. On the basis of the classification and according to various applicable conditions, we should determine a corresponding mining technology system for all sorts of opencast coalfield in order to give guidances on the mining design and to provide theoretical bases on the selection of mining technology. In this paper, it discussed how to determine a rational evaluation about mining technology. First, we should determine an evaluation index system of mining technology system which is constituted with 8 indexes of grade one, 20 indexes of grade two, 69 indexes of grade three. Second, we quantified the indexes of grade three according to the applicable conditions of various mining technology and concluded a quantification evaluation system. We used vectors which were constituted with the aggregate of numeric area of 69 indexes of grade three to indicate the quantification evaluation system and then calculated the value of subordination-degree and the value of weight coefficients. At last we could get the value of adaptability-degree of various mining technology, the mining technology with maximum value of adaptability-degree is the rational mining technology system.