摘要
采用正交数值模拟试验方法研究了节理力学参数对巷道变形与破坏的影响。选择法向刚度、切向刚度、粘聚力、内摩擦角、剪胀角、抗拉强度等6个因素、5个水平的正交试验方法进行了相关的UDEC数值模拟试验。试验结果表明:节理法向刚度和内摩擦角是影响巷道变形与破坏最敏感也是最重要的参数,增大节理法向刚度和内摩擦角可显著提高节理的抗变形能力;节理粘聚力和切向刚度对巷道变形也有明显影响。
The influence of the mechanical parameters of joints on the roadway deformation and failure is analyzed by the orthogonal numerical simulation test. Six factors, such as joint normal stiffness, joint shear stiffness, joint cohesion, joint friction angle, joint tensile strength and joint dilation angle are selected and each factor has five levels. The experimental results show that joint normal stiffness and joint friction angle are the most important and sensitive factors, which influence the deformation and failure of roadways. Raising joint normal stiffness and joint friction angle has a significant improvement on enhancing anti-deformation ability of the joints. Joint cohesion and joint shear stiffness also have obvious influence on the deformation of roadways.
出处
《山东科技大学学报（自然科学版）》
CAS
2008年第1期5-10,共6页
Journal of Shandong University of Science and Technology(Natural Science)
关键词
节理力学参数
正交数值模拟试验
巷道变形与破坏
mechanical parameters of joints
orthogonal numerical simulation test
deformation and failure of roadways mechanical parameters of joints
orthogonal numerical simulation test
deformation and failure of roadways
