摘要
通过对孔庄矿工程地质情况调查与分析,结合室内岩石力学实验,运用三维数值模拟方法,研究巷道非对称变形时周围岩体的位移场分布规律,分析巷道推进到上部工作面下方时的应力分布规律。理论研究结果表明,孔庄矿-785 m水平轨道大巷非对称变形主要受其上部采空区煤柱的集中压力控制,黏土矿物遇水膨胀、岩层结构及高地应力作用进一步恶化了巷道围岩结构。该研究可为孔庄矿深部巷道非对称变形控制对策提供初步的理论依据。
According to the investigation and analysis of the engineering geology in Kongzhuang Mine and the laboratory experiments of rock mechanics,we use three-dimensional numerical simulation to study the distribution of ground displacement field in surrounding rocks when the roadway shows the asymmetric deformation characteristics of surrounding rock significantly,analysis stress distribution law when the roadway promotes to the inferior of the upper face.The results of theoretical study show that the asymmetric deformation is controlled by centralized stress from coal pillar in upper goaf.This research provides a preliminary theoretical basis for the controlling countermeasures of asymmetric deformation characteristics of surrounding rock in Kongzhuang Mine.
出处
《中国工程科学》
2011年第11期102-106,共5页
Strategic Study of CAE
关键词
深部
软岩巷道
非对称变形
控制对策
deep
soft rock tunnel
asymmetric deformation
controlling countermeasures
