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文章从黄河上游中型电站坝基红层沉积的岩相古地理处理、岩石特征、物理力学性质、水理性质以及抗风化能力等方面入手,分析了红层的工程特性及建坝存在的主要工程地质问题,探讨了适应红层特点的设计对策和处理措施。 相似文献
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Based on the characteristics and reinforcement mechanism of vacuum preloading applied in high way soft foundation, the theoretical calculation method of vacuum preloading was presented. According to the equivalent method derived from sand drain foundation subjected to plane and axisymmetric conditions, the three dimensional problem was transformed into plane strain problem. The modified Komala-Huang model was used to model the rheological behavior and the damage theory was also introduced to consider the effect of damage caused by construction disturbance. Numerical simulations were carried out for a high way test section. The results show that simulations of the viscoelastic-plastic-damage model are in good agreement with the field measurements. It suggests that the calculation method, simplified load and boundary condition used in this study are reasonable. 相似文献
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针对给水管道回填土压实度存在实际施工中难以达到设计要求的问题,阐述了给水管道施工中回填土的质量要求,探讨了导致给水管道回填土压实度在实际施工中难以满足设计要求的原因,并从实践经验及回填土质量标准方面分析了合理的回填土压实度要求,以期为其他施工企业提供参考。 相似文献