辽宁工程技术大学学报（自然科学版）2017，Vol.36Issue(6)：566-573,8.DOI:10.11956/j.issn.1008-0562.2017.06.002
深部巷道“U”型钢支护典型特征及优化依据
Typical characteristics and optimization basis of U-shaped steel in deep roadway
摘要
Abstract
In order to improve the overall effect of U-shaped steel support and study the distribution law and stability of the internal force distribution of the support under the partial load,this paper took Linnan Cao coal mine as the case of study,and carried out numerical simulation of the distribution law of axial force,shear force,bending moment and displacement along the roadway tunneling direction,.The results show that the maximum axial force is at the leg of stands;the minimum axial force is at the top of steuts;shear force and bending moment at the top,legs and arch area of stand are higher;along the direction of roadway,axial force is stable;a gap in each excavation step,shear and moment of steuts decreases in total excavation roadway;When the bias pressure is at 0.9 Mpa,it have bigger influence on the surrounding rock,and the surrounding rock has a large plastic range.Internal force of stands in the first step excavation has an order of magnitude of change,and the distribution of support should be strengthened.关键词
“U”型钢支架/偏载/数值模拟/内力分布/稳定性Key words
U-shaped steel/combined load/numerical simulation/internal force distribution/stability分类
矿业与冶金引用本文复制引用
郭依宝,薛东杰,周宏伟,房凯,王子辉,何树生..深部巷道“U”型钢支护典型特征及优化依据[J].辽宁工程技术大学学报（自然科学版）,2017,36(6):566-573,8.基金项目
国家自然科学基金青年基金(51504257) （51504257）
中国博士后科学基金(2014M550102) （2014M550102）
煤矿安全高效开采省部共建教育部重点实验室开放基金项目(JYBSYS2015109) （JYBSYS2015109）
