摘要
土体的各向异性是普遍存在的。利用有限元法计算土石坝加固前后浸润线的分布情况,坝后渗透坡降的变化规律,得出各向异性的存在对土石坝的渗透稳定危害更大的结论。提出了在今后的计算中,需要合理确定不同方向的渗透系数,使计算结果符合实际情况。
Soil generally possesses anisotropic property . Finite element method is used to evaluate seepage line distribution before and after stabilization of earth-rock dam and then based on the change rule of permeability gradient behind the dam, we could draw a conclusion that presence of anisotropic property in earth and rockfill dam considerably endangers the structure stability against seepage. It is necessary to determine permeability coefficients in different directions in future calculations in accordance with actual situation.
出处
《四川水力发电》
2009年第A02期142-145,共4页
Sichuan Hydropower
关键词
各向异性
渗流计算
土石坝
浸润线
渗透坡降
anisotropy
seepage calculation
earth and rockfill dam
seepage line
permeability gradient
