湖南索溪双曲拱坝整体地质力学模型试验研究

索溪拱坝坝址处地形条件复杂,地质构造发育,岩体破碎,山体单薄.在这样的坝址上建造拱坝是否合适,是个有争议的问题.本文介绍了索溪双曲拱坝地质力学模型试验的相似条件、模型设计与制作方法、加荷程序及量测手段,对模型试验给出的安全系数进行了深入的讨论.文中认为索溪双曲拱坝的安全系数较小,在索溪峪天然地形地质条件下建造双曲拱坝,应取极慎重的态度.

Geomechanical Model Investigation for Suoxi Double-Curvature Arch Dam

Because of the complex topological condition, developed geological tectogenesis, broken rockmass and thin abutment at the dam site, the suitability of the site for the construction of a doublecurvature arch dam is controversial. In this paper, the geomechanical model test for Suoxi double-curvature arch dam is introduced, including similitude conditions, model design and construction , load application and displacement measurement. Based on the discussion about the safety of the dam given by this test, the final conclusion is reached that prudence should be taken in practice since the safety factor of Suoxi arch dam is inadequate without any reinforcement.