石坝河水库下游边坡抗滑桩支护加固方案研究

Study on the reinforcement scheme of anti-slide pile in the downstream slope of Shiba River Reservoir

石坝河水库大坝下游左岸边坡长期处于蠕变、滑移中,边坡前缘明显挤压、隆起、滑出,地表构建物裂缝增多且呈加剧恶化趋势。为防止大坝施工期和运行期边坡滑移破坏加剧,根据边坡稳定性评价成果及地质岩土力学性能,优选抗滑桩支护加固方案。设计计算成果表明,该加固方案合理、可行。经抗滑桩加固处理后,大坝下游边坡变形得到有效控制,稳定性良好。

The slope of the downstream left bank of Shiba River Reservoir Dam has been in the process of creep and sliding for a long time.The front edge of the slope is squeezed,uplifted and slipped outwards obviously.The cracks in the surface structure are increased with a tendency of aggravation and deterioration.The anti-slide pile reinforcement scheme is optimized according to the evaluation results of the slope stability and the geotechnical mechanical properties in order to prevent the deterioration of the slope during the construction and operation of the dam.The calculated results show that the scheme is reasonable and feasible.The dam downstream slope deformation is effectively controlled,and the stability is excellent after the anti-slide pile reinforcement treatment.