摘要
巷道围岩塑性区边界是巷道稳定及支护考虑的主要因素,其中巷道塑性边界受围岩岩性、不均匀初始应力场、巷道方向夹角,开挖半径的影响.结合淮南矿区地层赋存条件,采用正交试验设计及多元曲线回归分析研究数值模拟结果,并对参数进行多指标试验综合平衡分析,得到了直墙半圆拱巷道顶部、帮部塑性区边界参数影响规律与统计公式,结果符合现场工程的实际情况.
The plastic zone boundary of surrounding rocks is main factor to be considered in stability and support of a tunnel,it is affected by lithology of rocks,uniform initial stress field,direction of tunnel,and excavation radius.Taking the situations of Huainan coal mine into consideration,we synthetically analyzed some parameters used in multi-index test according to the result of multiple regression analysis and numerical simulation,obtaining the effect of parameters on boundary of plastic zone on the roof and two sides of tunnel,which is in good accordance with the practical situation.
出处
《采矿与安全工程学报》
EI
北大核心
2009年第1期70-73,共4页
Journal of Mining & Safety Engineering
基金
国家自然科学基金重点项目(90510019
40638040)
关键词
正交试验
多元回归
平衡分析
塑性边界
orthogonal test
multiple regression
balance analysis
plastic boundary
