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通过三维有限元方法进行了溪洛渡拱坝渗流场分析,并采用增量荷载法研究考虑了渗流场通过地基变形作用于高拱坝结构的影响。结合溪洛渡工程,研究了渗流场对高拱坝地基变形的影响,包括横河向和顺河向两方面。对比蓄水前后,采用增量荷载法,研究地基变形增量对高拱坝结构应力和变形的影响及大小。研究成果初步表明渗流场是影响溪洛渡拱坝监测资料反映的径向往上游变形的影响因素之一,后续将深入研究岩石与水力学作用,分析和掌握因水库蓄水而产生的各类荷载以及岩石力学性质的变化,最终明晰高拱坝结构变形机理和真实工作状态。
The seepage field analysis of Xiluodu Arch Dam is carried out by means of three-dimensional finite element method. The influence of seepage field through the deformation of foundation on the structure of high arch dam is studied with incremental load method. Combined with the Xiluodu project, the effects of seepage field on the deformation of high arch dam foundation are studied, including the Yokunian and Yokoch rivers. Before and after the comparison with the impoundment, the incremental load method was used to study the influence and size of the incremental deformation of foundation on the stress and deformation of the high arch dam. The results of the preliminary study show that the seepage field is one of the influencing factors of the radial to upstream deformation reflected by the monitoring data of the Xiluodu Arch Dam. Later on, the study will focus on the role of rocks and hydraulics, analyzing and mastering various types of loads due to reservoir water storage, Mechanical properties of the changes, and ultimately clear high arch dam deformation mechanism and real working conditions.