Use of an apron to stabilize geomembrane tubes for fighting floods

被引：49

作者：

Kim, M ^{[1
]}

Freeman, M ^{[1
]}

Fitzpatrick, BT ^{[1
]}

Nevius, DB ^{[1
]}

Plaut, RH ^{[1
]}

Filz, GM ^{[1
]}

机构：

[1] Virginia Polytech Inst & State Univ, Charles E Via Jr Dept Civil & Environm Engn, Blacksburg, VA 24061 USA

来源：

GEOTEXTILES AND GEOMEMBRANES | 2004年 / 22卷 / 04期

基金：

美国国家科学基金会;

关键词：

flood control; flood-fighting device; geomembrane tube; numerical modeling; soil-structure interaction;

D O I：

10.1016/j.geotexmem.2004.03.004

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The most common temporary flood-fighting technique is the construction of piles of sandbags. A recent alternative is the use of inflated geomembrane tubes (which are also used as cofferdams). One of the problems with these tubes is the possibility of sliding or rolling when they are subjected to water on one side. This can be mitigated by friction underneath an apron attached to the tube and spread along the ground on the headwater side. In this investigation, experiments are conducted on tubes with aprons of varying lengths. Then an analytical model of a simplified version of the system is proposed, involving a rigid foundation and inextensible membrane material. Finally, a numerical analysis using the program FLAC is carried out, including the effects of soil deformations, pore pressures, and bending stiffness of the tube material. The results demonstrate that a geomembrane tube with an apron of sufficient length under the headwater can be an effective flood-fighting device. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：239 / 254

页数：16

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