季冻区边坡地下水渗流模型试验  

Modelling of Slope Underground Water Seepage in Seasonally Frozen Region

作　　者：洪文江 徐学燕[1,3] 于皓琳[1,3] 

机构地区：[1]哈尔滨工业大学结构工程灾变与控制教育部重点实验室,哈尔滨150090 [2]黑龙江省电力设计院有限公司,哈尔滨150078 [3]哈尔滨工业大学土木工程学院,哈尔滨150090

出　　处：《科学技术与工程》2017年第35期125-133,共9页Science Technology and Engineering

基　　金：国家青年基金(41201071)资助

摘　　要：随着季节冻土区的交通网络建设和基础设施建设项目不断增多,季节冻土区边坡工程冻融灾害问题越发严重。中国在此方面的研究起步较晚,中国学者虽积极开展研究;但较少有人通过试验手段研究地下水位变化对季节冻土区边坡的影响。使得季节冻土区边坡因春融期地下水上升引起的冻融-渗流稳定性问题成为亟待研究的课题之一。通过室内模型试验,揭示季节冻土区粉质黏土边坡在不同初始含水率、相同坡比的条件下,随着地下水位的升高,粉质黏土边坡在春融期破坏形式由浅层滑坡破坏向整体破坏过渡。Although our country is increasing traffic network and base installation,the loss of stability of side slope due to freeze and melt in seasonal frozen soil region for engineering disaster was more and more happen. However,side slope of freezing-thrawing and seepage that located in the seasonal frozen soil region is studied relatively late in china. Scholars in China has been actively carry out research,but fewer people by experimental method to study the effect of underground water level changes on the slope in the seasonal frozen soil region. The problom about freezing-thawing and seepage of side slope that is caused by underground water has becoming one of the most ungent problems. As the ground water level rise,by analyzing model tests and numerical simulation in combination,the silty clay slopes which have the different initial content and slope rate in seasonal frozen soil region transit from shallow failure to nondisintegrative-failure in melt season.

关 键 词：季节冻土 粉质黏土边坡 冻融 地下水位 

分 类 号：TU43[建筑科学—岩土工程]