期刊论文

Research on numerical simulation of surrounding rock laneway failure under rectangular and straight wall arch

中文

武汉轻工大学学报

2095-7386

2011

30

1

74-78

10.3969/j.issn.1009-4881.2011.01.019

武汉工业学院2009年研究生创新基金项目（No.09cx008）；

本校为第一机构

通过对岩石破坏特性和机理的分析,得出岩石破坏的剪切强度与参数的数学关系。在此基础上建立围岩巷道的数值模型,模拟围岩巷道在矩形和直墙拱等断面条件下的破坏过程,得出巷道在不同侧压系数条件下的围岩破坏特征。结果表明：同一断面形状,当侧压系数较小时,破坏裂纹首先出现在两帮,随着荷载的增大,破坏裂纹由底部向顶部转移;另外基于矩形和直墙拱形断面巷道的数值模拟,得出了围岩巷道的破坏是一个渐进的过程,并伴随应力场而不断转移,且在相同侧压系数和外荷载条件下,矩形巷道破坏较为严重。分析矩形巷道和直墙拱巷道变形破坏过程,为合理寻求巷道设计和支护方法提供依据。

Through the analysis of characteristics and mechanism on the rock damages,the mathematical relationships of the shear strength and parameters as rocks destroying are acquired.On this basis,we build the numerical model of surrounding rocks and roadways,and simulate the damage process of roadways under the conditions of the rectangle and the straight wall arch sections,and obtain the damage characteristics of surrounding rock-mass in different side pressure coefficients.Results show that： when side pressure coefficient is lesser,the destroying c...