大坝无限深透水地基渗流计算深度选取初探  

Preliminary Studies on the Depth Selection of Seepage Calculation on the Infinite Deep Pervious Foundation

作　　者：毛海涛[1] 侍克斌[1] 宫经伟[1] 

机构地区：[1]新疆农业大学水利与土木工程学院,新疆乌鲁木齐830052

出　　处：《水力发电》2009年第4期48-50,70,共4页Water Power

基　　金：新疆水利水电工程重点学科基金资助(xjzdxk-2002-10-05);新疆高校科研计划重点项目资助(xjEDU2005I09)

摘　　要："当透水坝基深度大于建筑物的不透水底部长度的1.5倍以上时,可视为无限深透水坝基",按此定义来衡量地基是否为无限深透水地基,往往让设计者难以抉择。为此,通过复变函数保角变换的方法对无限深透水地基进行计算分析,得出无限深透水地基的有效深度;同时,对于层状的无限深透水地基,针对各层地基在消杀总水头中的权重,计算出其等效渗透系数,相比其他方法,更加符合实际情况。＂When the depth of pervious dam foundation is more than 1.5 times of the building＇s impervious bottom length, such foundation can be considered as the infinite deep pervious foundation,＂ such definition often makes designer difficult to select. This paper makes use of the conformal transformation method to get the effective depth of infinite deep pervious foundation. Meanwhile, for the permeability coefficient of layered infinite deep pervious foundation, this paper, based on the weights which every layer to subtractive the water head, calculates out its equivalent permeability coefficient. Compared to other methods,it is more conform with the actual situation.

关 键 词：无限深透水地基 渗流量 垂直防渗墙 保角变换 

分 类 号：TV223.4[水利工程—水工结构工程]