基于灰色系统理论的管涌影响因素研究  

The Research of Factors Influencing Piping Based on Grey System Theory

作　　者：苌坡 陈建生[2] 黄德文[1] 张华[1] 袁克龙 

机构地区：[1]河海大学土木与交通学院,南京210098 [2]河海大学地球科学与工程学院,南京210098

出　　处：《河南科学》2014年第5期790-794,共5页Henan Science

基　　金：国家重点基础研究发展计划(973计划)(2012CB417005);江苏省普通高校研究生科研创新计划项目(CXZZ12_0231)

摘　　要：堤坝和水利工程中经常发生管涌破坏,管涌的影响因素比较复杂,且各因素间存在高度的非线性关系,对管涌的敏感性也各不相同.描述了管涌发生的机理和影响因素,采用灰色系统理论中的灰色关联分析方法,对管涌发生进行了敏感性分析.计算结果表明:管涌的最主要影响因素为有效内摩擦角,其关联系数最大为0.731 5,饱和单位重度的关联系数最小为0.596 8,从而得出影响管涌相关因素的主次关系,为工程实践提供了有益参考.Piping damages often occur in the dam and water conservancy. The factors that cause piping are complex and there are highly nonlinear relationships among these factors, and the sensitivity of each factor on piping is different. In this paper, the mechanism and factors of piping were discussed. Grey relational analysis method, which is part of grey system theory, has been put forward to analyze the sensitivities of different factors on piping. The calculation results show that： the maximum correlation coefficient of effective angle of internal friction which is the main influencing factor for piping is 0.731 5, the minimum correlation coefficient of saturated unit weigh is 0.596 8, and the primary and secondary relations of the factors influencing piping were calculated. The study provides the beneficial reference for project practices.

关 键 词：堤坝 管涌 灰色关联度分析 影响因素 

分 类 号：TU441[建筑科学—岩土工程]