摘要
土石坝的扩建加高一般采用下游面培厚加高的方法,加高后的渗流稳定问题是工程安全与否的关键.由于土坝加高后新老土体的渗透性不同,易造成坝体渗透的不均匀性,引起渗透破坏.采用有限元方法,就3种加坝方案,从坝体和坝基各向同性与各向异性2个方面,对均质土坝的稳定渗流问题进行了研究,比较了各个方案的优劣,选取最佳方案.
Raising and thickening earth dam at downstream face is common method for dam expansion and heightening.The problem of seepage stability is the safety key of the project after raising the earth dam.Since the new earth body and the old one have different permeability,and it is easy to lead to unequal seepage and seepage destroy.By using finite element method,problem of homogeneous earth dam seepage stability is studied and analyzed on isotropic and anisotropic aspects of dam body in three dam schemes.Then,best scheme is selected by comparison.
出处
《宁夏工程技术》
CAS
2013年第2期134-137,共4页
Ningxia Engineering Technology
关键词
土坝
扩建
渗透稳定性
有限元分析
earth dam
expansion
seepage stability
finite element analysis
