文献类型：期刊文献

中文题名：基于黏土含量的弱胶结地层巷道稳定性分析

英文题名：Stability Analysis of Roadway in Weakly Consolidated Formation Based on Clay Mineral Content

作者：赵维生 梁维 许猛堂 刘彬

第一作者：赵维生

机构：[1]贵州理工学院矿业工程学院,贵州贵阳550003;[2]中煤科工集团重庆设计研究院有限公司,重庆400016

第一机构：贵州理工学院矿业工程学院

年份：2020

卷号：51

期号：12

起止页码：277-282

中文期刊名：煤矿安全

外文期刊名：Safety in Coal Mines

收录：CSTPCD;;北大核心:【北大核心2017】；

基金：贵州省科技支撑计划资助项目(黔科合支撑[2019]2882);贵州省教育厅青年科技人才成长资助项目(黔教合KY字[2017]219);贵州理工学院高层次人才科研启动经费资助项目。

语种：中文

中文关键词：黏土矿物含量;弱胶结地层;围岩稳定性;物理与力学性质;室内试验;数值仿真

外文关键词：clay mineral content;weakly consolidated formation;stability of surrounding rock;physical and mechanical properties;laboratory test;numerical simulation

摘要：以内蒙古五间房西一矿为工程背景,对3组取自该矿不同黏土矿物含量的弱胶结软岩分别开展XRD矿物衍射分析、液塑限联合测定和室内力学试验,根据物理与力学试验结果,建立3种不同黏土矿物含量岩体的巷道数值分析模型,研究岩石黏土矿物含量对巷道围岩变形和塑性区的影响。结果表明:随黏土矿物含量的增加,弱胶结岩石的颜色逐渐加深,液限和塑限逐渐变大,力学强度先增后降,细观"鳞片状"结构越发育;弱胶结地层巷道的塑性区范围和变形量不仅随黏土矿物含量的增加而增大,且增幅随黏土矿物含量的增加逐渐增大,当黏土矿物含量超过33%后的围岩稳定性明显降低。
Taking Wujianfang west No.1 mine in Inner Mongolia as the engineering background,XRD mineral diffraction analysis,combined determination of liquid-plastic limit and laboratory mechanical test were carried out on three groups of weakly consolidated soft rocks with different clay mineral content from the mine.According to the physical and mechanical test results,three different numerical analysis models of clay mineral content of rock roadway were set up,and the influence of rock clay mineral content on surrounding rock deformation and plastic zone of roadway was studied.The results show that with the increase of clay mineral content,the color of weakly consolidated rocks gradually deepens,the liquid limit and plastic limit gradually increase,the mechanical strength increases before it decreases,and the meso-scale structure develops more and more.The range of plastic zone and deformation of weakly consolidated formation roadway do not increase linearly with the increase of clay mineral content,and the increment of plastic zone and deformation gradually increases.When the content of clay mineral exceeds 33%,the stability of surrounding rock decreases obviously.