摘要
本文分析了影响刚柔混合衬砌渠道保护层稳定的主要因素以及复合土工膜与垫层之间的剪切特性对抗滑稳定性的影响,探讨了渠道水位骤降时其垫层保护层的稳定性,并在此基础上采用刚体极限平衡理论,得出了其垫层保护层的稳定安全系数计算公式,并对衬砌渠道保护层抗滑稳定性分析应注意的问题进行了探讨。研究表明:该安全系数计算公式的计算结果与工程的实际情况符合度较好,可为大型渠道的设计、施工提供参考。
The main factors to impact the stability of the protection layer of channel with rigid-flexible compounded lining and the impact from the shearing characteristics between the composite geomembrane and the cushion layer on the anti-sliding stability are analyzed herein,while the stability of its protection layer for the cushion when the sudden drop of water level in the channel is discussed as well. On the basis of this,the formula for calculating the stability safety coefficient of the protection layer for the cushion is obtained with the rigid body limit equilibrium theory,and then the problems that attention must be paid to during the analysis of anti-sliding stability are also discussed. The study shows that the calculation result from the formula for calculating the stability safety coefficient coincides better with that from the actual condition,thus can provide references for design and construction of large sized channel.
出处
《水利水电技术》
CSCD
北大核心
2014年第9期70-74,共5页
Water Resources and Hydropower Engineering
基金
国家自然科学基金项目(51269029)
石河子大学高层次人才科研启动资金项目(RCZX201128)
关键词
刚柔混合衬砌渠道
刚体极限平衡理论
安全系数
保护层
抗滑稳定
channel with rigid-flexible compounded lining
rigid body limit equilibrium theory
safety coefficient
protection layer
anti-sliding stability
