节理岩坡中注浆效应的FLAC3D数值分析

详细信息

Numerical analysis for grouting effect in jointed slope by FLAC3D

1. 1. College of Geoscience and Environment Engineering, Central South University, Changsha 410083, China;
2. Department of Environment Engineering, Zhenzhou Economic Managerment Institute, Zhengzhou 451191, China;
3. School of Resources & Safety Engineering, Central South University, Changsha 410083, China

摘要: 通过理论推导,确定了边坡的有效注浆范围;由三维拉格朗日元法(FLAC3D)建立数值计算模型,在有效注浆范围内对弱面进行注浆。对比节理边坡在注浆前后应力场和位移场的变化,结果表明:通过注浆提高了节理面的抗剪强度和抗剪刚度,使岩体的应力场和位移场变得均匀和连续;边坡上缘的拉应力区逐渐消失;坡体内各个部位的位移分叉现象逐渐减少,有利于边坡稳定。
- 注浆 /
- 应力 /
- 位移 /
- FLAC3D
Abstract: The effective grouting area for rock bedded slope is calculated.A numerical calculation model is founded by the method of fast Lagrangian analysis of continua three dimensions(FLAC3D).The grouting is done in the effective grouting area.The comparison analysis for the stress field and displacement field before and after grouting are conducted.The analysis results show that after grouting the shear resistance strength and shear stiffness are increased.The stress field and displacement field of rock mass are more symmetrical and continuous.The tensile stress area is reduced gradually.The phenomenon of displacement mutation is reduced,which is good to the stability of slope.
- grouting /
- stress /
- displacement /
- FLAC3D