基于层次分析法的封盖层封盖能力定量评价

Quantitative evaluation for cap capability of capping layer based on AHP

封盖能力的大小主要受四个因素的控制:封盖层的岩性、厚度、埋深以及构造变形。为了定量评价封盖层的封盖能力,选取封盖层的泥砂比、岩层厚度等效系数、埋深以及构造曲率四个评价因子,基于AHP层次分析法,建立四个评价因子的量化标准以及比较判断矩阵,通过对四个评价因子进行量化分级并赋予不同权重,使用封盖能力综合指数数学模型,实现了对鱼卡煤田尕秀勘探区封盖层封盖能力的定量评价。

The size of cap capability is mainly controlled by four factors： lithology, thickness, depth and tectonic deformation of the capping layer. In this paper,silt ratio,the equivalent coefficient bed thickness,depth and structure of the curvature of capping layer are selected as the four evaluation factors. Based on AHP analytic hierarchy process,through the four evaluation factors are quantitatively graded and given different weights,using the mathematical model of sealing capacity index,quantitative evaluation on the cap capability of capping layer of Gaxu exploration area is realized in Yuqia Coalfield.