十天高速公路膨胀土地层斜坡失稳成因分析及综合治理研究

Cause Analysis and Comprehensive Control Research of Slope Instability of Expansive Soil Stratum in Shiyan—Tianshui Highway

结合十堰至天水高速公路(十天高速)武侯服务区的实例,利用其场区综合地质勘察和室内试验成果资料,在前期多次处理的基础上,对膨胀土地层斜坡失稳的成因进行深入论证。通过不同工况下的稳定性计算对比,分析其整体稳定性,总结出该类问题的经验教训,提出了勘察、设计、防水排水、施工工艺控制多方面的综合治理总体思路。

Combining with the practice of Wuhou Service Area of Shiyan—Tianshui Highway,using the comprehensive geological investigation and laboratory test results data in the area,based on the preliminary processing,the cause of the slope instability of the expansive soil stratum is demonstrated deeply.Through the calculation and comparison of the stability under different working conditions,its overall stability is analyzed,the experience and lessons of this kind of problem are summed up and a general thought for comprehensive treatment on survey,design,waterproof and drainage and construction process control,etc.is put forward.