ANALYSIS OF THREE DIMENSIONAL SEEPAGE FOR FILL TYPE DAM AND VALLEY SYSTEM

填方坝谷系统三维渗流分析

• 批准号: 07660308
• 负责人: KADONO Miyoshi
• 金额: $ 1.47万
• 依托单位: HIROSAKI UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07660308/
• 关键词: Fill Type Dam; F.E.M; Three Dimensional Seepage; Dam and valley System; Surface of Seepage; 均一型フィルダム; 前面コア型フィルダム; 三次元有限要素法; V字谷; 亀裂; フィルタイプダム; 三次元; 浸透流; 浸潤線; ドレーン

In the present paper, the three dimensional seepage were analyzed by finite elements methods and Sand model examination for Fill type dam and Valley system. For the fill type dam and valley system are setting to the type (1) and the type (2) of the valley's form. THe type (1) is V model, and the type (2) is triangular prism model of the valley's form.A summary of results obtained is shown below ;(1) The chenginng in the factor, scale of crest length, slope and abutment of dam, were analyzed by finete element metords and the sand model examinations..(2) A seepage surface of shape are related these factors of dam.(3) The flow lines (h lines) of type (1) converges to toe drain of dam, but the type (2) are diffused to the lower reaches of dam.(4) The seepage points of type (1) are occurred in the high level of downstream slope under certain conditions.(5) These results cannot be obtained analyzes by the two dimensional seepage.

本文采用有限单元法和模型试验相结合的方法，对填石坝和沟谷系统进行了三维渗流分析。对于充填型坝系，设置为（1）型和（2）型沟谷形态。（1）采用有限元法和砂模试验，分析了坝高、坝坡、坝肩等因素的变化规律。(2)渗流面的形状与大坝的这些因素有关. (3)第一类流线（h线）向坝趾排水沟收敛，第二类流线向下游扩散。(4)第一类渗流点在一定条件下出现在下游边坡的高位。(5)这些结果是二维渗流分析所不能得到的。