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[1]刘晓云,叶义成,王其虎,等.泊松比对巷道稳定性影响的数值模拟试验研究[J].中国安全生产科学技术,2016,12(12):80-85.[doi:10.11731/j.issn.1673-193x.2016.12.014]
　LIU Xiaoyun,YE Yicheng,WANG Qihu,et al.Numerical simulation study on influence of Poisson's ratio on roadway stability[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2016,12(12):80-85.[doi:10.11731/j.issn.1673-193x.2016.12.014]
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泊松比对巷道稳定性影响的数值模拟试验研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
12
期数:
2016年12期
页码:
80-85
栏目:
现代职业安全卫生管理与技术
出版日期:
2016-12-30

文章信息/Info

Title:
Numerical simulation study on influence of Poisson's ratio on roadway stability
文章编号:
1673-193X(2016)-12-0080-06
作者:
刘晓云1; 叶义成1; 2; 王其虎1; 王明旭1; 刘洋1
(1.武汉科技大学 资源与环境工程学院，湖北 武汉 430081；2.武汉科技大学 冶金矿产资源高效利用与造块湖北省重点实验室，湖北 武汉 430081）
Author(s):
LIU Xiaoyun1;  YE Yicheng1; 2;  WANG Qihu1; 2;  WANG Mingxu1;  LIU Yang1
(1. School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan Hubei 430081, China; 2. Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgical Minerals, Wuhan University of Science and Technology, Wuhan Hubei 430081, China)
关键词:
泊松比; 数值模拟; 巷道稳定性; 安全系数
Keywords:
Poisson's ratio;  numerical simulation;  roadway stability;  safety coefficient
分类号:
TU322
DOI:
10.11731/j.issn.1673-193x.2016.12.014
文献标志码:
A
摘要:
泊松比是分析岩体性质的重要物理力学参数之一。为了分析泊松比对巷道稳定性的影响，从泊松比测定与计算方法着手，采用金尼克假说，以巷道侧压系数为研究对象，运用ANSYS软件，建立典型矿山巷道锚喷支护后的数值模型，通过设置沿拱角径向的安全系数监测点，建立巷道安全稳定范围与泊松比的对应关系。研究表明，随着泊松比μ值的增加，巷道拱角处不稳定区域逐渐减小，并向顶底板延伸，巷道两帮的塑性破坏区无明显变化；泊松比μ值为0.20时，塑性破坏区面积较大，为巷道断面面积的5.10倍；泊松比μ值(x)与安全系数≥1的区域距离拱角径向位置(y)的关系式为：y=61.518x2-54.509x+12.516。研究为泊松比对巷道稳定性影响提供了一定的理论参考依据。
Abstract:
The Poisson's ratio is one of the important physical and mechanical parameters to analyze the properties of rock mass. In order to analyze the influence of Poisson's ratio on roadway stability, starting from the determination and calculation methods of Poisson's ratio, a numerical model of typical mine roadway with bolt-shotcrete support was established by using ANSYS software through adopting the Dinnik's hypothesis and taking the side pressure coefficient of roadway as the research object. The corresponding relationship between the safety stability range and the Poisson's ratio of roadway was established by setting the monitoring points of safety coefficient along the radial direction of arch angle. The results showed that with the increase of Poisson's ratio μ value, the unstable zone at the arch angle of roadway reduces gradually and extends to the roof and floor, while the plastic failure zone on both sides of roadway have on obvious change. When the Poisson's ratio μ value is 0.20, the area of plastic failure zone is larger, which is 5.10 times of the cross section area of roadway. The relationship between the Poisson's ratio μ value (x) and the radial position of the zone with safety coefficient great than or equal to 1 away from the arch angle (y) is y=61.518x2-54.509x+12.516. The research provides a theoretical reference and basis for the influence of Poisson's ratio on roadway stability.

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备注/Memo

备注/Memo:
国家自然科学基金(51574183)；湖北省教育厅科学研究计划项目（Q20151102）
更新日期/Last Update: 2017-01-13