Application of Analytic Hierarchical Process in Effect Evaluation of Gas Drainage by Holes Drilled along Coal Seam
LI Yun
Abstract：Gas pre-drainage by holes drilled along the working seam, as a fundamental measure for gas control, can reduce gas content of the seam and greatly decrease the gas emission in the mining process of the seam. In this paper, an effect evaluation model of gas drainage by holes drilled along the seam was established by using the analytic hierarchy process and selecting the desorption gas content, gas concentration, negative pressure of gas drainage and the drainage volume per 10 000 m hole as the evaluation indexes. The value of each evaluation index was divided into four intervals according to its properties and change range, and the gas drainage effect by holes drilled along the seam was evaluated as four grades of excellent, good, medium and poor according to the sum of the weighted score of each evaluation index. With this model, comprehensive evaluation was carried out on the gas drainage effect by holes along the seam in each working face in Yuwu Coal Mine.
Keywords：analytic hierarchy processhole drilled along seamevaluation modelweightgas drainage
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 57-61 )