新疆宽浅变迁河流桥位河段壅水研究  

Backwater at bridge constrictions of broad-shallow and shifting channels in Xinjiang

作　　者：胡江[1] 严以新[1] 杨胜发[2] 周华君[2] 

机构地区：[1]河海大学交通与海洋工程学院,江苏南京210098 [2]重庆交通大学河海学院,重庆400074

出　　处：《水科学进展》2007年第2期198-203,共6页Advances in Water Science

基　　金：交通部西部建设重点科研项目(2001-318-365-88)~~

摘　　要：新疆宽浅动床河流水深小、比降大、水流急,河床容易冲刷。建桥后,由于桥位断面压缩而导致的壅水与一般冲积河流不同。通过概化动床模型试验,得出了新疆宽浅变迁河流桥位河段壅水计算公式。动床模型公式充分反映了这类河流壅水的特点,因而与实际情况较为符合。The broad-shallow and shifting channels in Xinjiang have characteristics of shallow water depth, steep gradients, high flow velocity and easily scoured river bed. Its backwater, due to bridge constrictions, is different from that of alluvial channels. In this paper, a simple formula is developed for estimating backwater by generalized mobile-bed river engineering model experiment. As it reflects characteristics of the broad-shallow and shifting channels in Xinjiang, author＇s formula fits in with this kind of rivers preferably.

关 键 词：桥梁壅水 新疆宽浅变迁河流 动床模型 

分 类 号：TV135.4[水利工程—水力学及河流动力学]