伊泰兹水电站引水洞施工支洞堵头稳定性分析

Structure and stability analysis on construction adit plug for Itezhi-tezhi hydropower station

赞比亚伊泰兹水电站引水洞施工支洞堵头设计主要采用了两种解析法进行计算分析,为确保安全,考虑到施工技术、封堵条件、堵头所在位置等的影响,采用可靠度理论对堵头长度进行了分析计算,同时采用了三维有限元方法对堵头变形、位移等进行了复核,最终确定了满足稳定要求的堵头设计长度。

Two analytical methods are mainly used in the plug design of The Itezhi-tezhi hydropower station construction adit and the length of play is calculated by the analytical methods. For ensuring the engineering safety,the deformation and displacement of the plug are analyzed by the three-dimensional finite element method after considering the impacts of construction technology,sealing conditions and plug’s location in the cross section. Based on the results of FEM,the length of plug which can meet the requirements of safety is finally determined.