广东怀阳高速公路泥盆系地层顺层边坡工程地质特征研究

Study on Engineering Geological Characteristics of Devonian Bedding Slope from Huaiyang Expressway in Guangdong Province

怀阳高速公路的工程实践表明,粤西怀集盆地泥盆系地层中的顺层边坡对路堑边坡稳定性影响很大,大部分顺层边坡在正常工况下开挖后其滑动安全系数未能达到规范要求,须采取必要的较强工程措施进行加固。因此,以怀阳高速公路泥盆系地层顺层边坡为例,重点介绍了此类边坡的工程地质特征,统计分析了稳定性验算成果,总结此类顺层边坡的边坡设计经验。由此可知,对顺层边坡尤其是怀集盆地泥盆系地层顺层边坡进行稳定性分析时,应综合考虑多种因素的影响,边坡设计也应针对不同的情况作出调整,从而为类似工程提供一定的参考与借鉴。

The engineering practice of Huaiyang Expressway shows that the bedding slope in the devonian strata of the Huaiji Basin in western Guangdong has a great influence on the stability of the cutting slope.Most of the bedding slopes slide after excavation under normal conditions.If the safety factor fails to meet the requirements of the specification,it must take necessary and strong engineering measures to strengthen it.Therefore,taking the bedding slope of Devonian strata in Huaiyang Expressway as an example,the engineering geological characteristics of such slopes are introduced,the results of stability checking are statistically analyzed,and the slope design experience of such bedding slopes is summarized.It can be seen that the stability analysis of bedding slopes,especially the bedding slopes of the devonian strata in the Huaiji Basin,should take into account the influence of various factors,and the slope design should also be adjusted for different situations.Provide some reference and reference for similar projects.