摘要
针对三峡工程永久船闸高边坡节理岩体，采用了断裂－损伤力学模型的有限元数值方法，着重分析了在压剪应力场作用下边坡节理尖端产生次生裂纹而进一步扩展的可能性及产生的附加变形，并研究了如何对这种破裂方式用锚固手段加以控制，以达到减少节理损伤演化扩展区和边坡的变形量。文中对锚固方案做了优化分析和评价。
The FEM with a fracture damage model has been adopted to analyse the stability of high slope of Three Gorges flight lock. In analysis, the generation of subcracks of joint tips and its additional deformation as well as the possibility of further extension are considered under the compressive shear stress condition. The effect of rock bolts for controling this type of rock failure to reduce the damage evolution zones of joints and the slope deformation is studied and optimization analysis and evaluation of different anchoring schemes are made also.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
1996年第4期305-311,共7页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金
中国长江三峡工程开发总公司资助
关键词
船闸
高边坡
节理岩体
锚固方案
有限元稳定分析
high slope of Three Gorges flight lock, jointed rock mass, fracture damage, anchoring scheme, stability analyses by FEM
