摘要
为研究库水位下降时均质心墙土坝的浸润线位置的变化,在假定心墙不透水的条件下,与传统的浸润线在心墙迎水侧近似水平的假定不同(第一种假定),假设,在无穷远处浸润线与水平线相切(第二种假定),进而得出了水库水位下降时的浸润线变化方程。然后利用Geo-Studio中的渗流模块SEEP/W对计算模型进行了有限元数值模拟,提取了浸润线的位置,并和两种方程计算的结果进行了对比。结果表明,第一种假定计算的到的浸润线位置与数值模拟得到的结果相比整体偏下,第二种假定得到的浸润线与数值模拟结果较为接近。
In order to study on position change of phreatic line of isotropic core earth dam while falling of reservoir water level,under the assumption condition of a waterproof core, different from the traditional assumption of the phreatic line is approximate level at the facing water slope of the core(the first assumption), the paper assumes that the phreatic line is tangent to the horizontal line at infinity(the second assumption), and then obtains the change function of phreatic line when falling of reservoir water level.Then the finite element numerical simulation is made for the calculation model by using the seepage module SEEP/W in GEO-Studio software, the position of phreatic line is extracted and compared between the results calculated by the two functions. The results showed that the position of phreatic under the first assumption is lower than the numerical simulation result in general, and the position of phreatic under the second assumption is similar to the numerical simulation result.
作者
嵇光阳
何文社
JI Guang-yang;HE Wen-she
出处
《东北水利水电》
2019年第12期30-32,72,共4页
Water Resources & Hydropower of Northeast China
关键词
土坝
均质心墙
水位下降
浸润线位置
数值模拟
earth dam
core-wall
falling of water level
phreatic line position
numerical simulation
