摘要
渠系工程中渠基土与衬砌接触面的冻胀破坏问题一直是我国农业工程发展中的难题。近年来,关于灌渠-衬砌接触面冻害的研究仍然较少,各个领域的研究仍有许多不足。本文从理论方面分析灌渠-衬砌接触面在负温作用下的3种冻害类型,归纳出冻裂破坏、冰冻破坏和冻胀融沉破坏3种破坏形式的基本特点和理论研究现状;结合试验研究的各个方面,分析灌渠-衬砌接触面上产生的剪切力、冻胀力、冰胶结力的性质与一般变化规律;再根据该类问题在数值模拟方面的发展,分析4种目前该领域应用最广的数值模拟软件在灌渠-衬砌接触面冻害问题中的优缺点。并归纳出前人在此研究中的不足和需要改进的方面,并提出新的思路,为灌渠-衬砌接触面冻胀破坏方向深入研究提供参考和理论支撑。
The frost heave failure of canal foundation soil and lining surface is always a difficult problem in the development of agricultural engineering in China.In recent years,there are still few researches on freezing damage of irrigation-lining contact surface,and there are still many deficiencies in various fields.In this paper,three types of frost damage of irrigation-lining contact surface under negative temperature are analyzed theoretically,and the basic characteristics and theoretical research status of the three types of damage are summarized.The properties of shear force,frost heave force and ice cementing force generated on the contact surface of irrigation canal and lining are analyzed.According to the development of numerical simulation of this kind of problem,the advantages and disadvantages of four kinds of numerical simulation software which are widely used in this field are analyzed.The shortcomings of previous studies and the aspects that need to be improved are summarized,and new ideas are put forward to provide reference and theoretical support for further research on frost swelling failure of irrigation ditch-lining contact surface.
作者
马小涵
薛珂
郑涛
刘建平
阳峰
MAXiaohan;XUE Ke;ZHENG Tao;LIU Jianping;YANG Feng(School of Water Conservancy and Hydropower,Sichuan Agricultural University,Ya’an 625014,China)
出处
《灌溉排水学报》
CSCD
北大核心
2020年第S02期60-65,共6页
Journal of Irrigation and Drainage
基金
国家自然科学基金项目(41907242)
关键词
灌渠
衬砌
接触面
季节性冻土
冻胀破坏
irrigation channel
lining
contact area
seasonal frozen soil
frost heaving damage
