摘要
汶川黄岩不稳定斜坡一旦失稳,将直接危及国道213延长线、滑坡前缘的灾民安置点和杂谷脑河道,直接经济损失约500万元。通过调查,查明了黄岩不稳定斜坡的地质条件及变形破坏特征。以室内土工试验成果为依据,利用C、φ反演的方法并参考其它相似滑坡,获得了此滑坡的计算参数。采用极限平衡的传递系数法,选取剖面对斜坡稳定性进行计算。计算结果表明地震和暴雨工况下,该斜坡将有可能失稳。由于该斜坡位于汶川地震带,在雨季,遇到大地震和暴雨,该斜坡将有可能失稳,应针对引发斜坡失稳的主要因素进行工程治理,消除地质灾害隐患。
Once the unstable slope of Wenchuan Huangyan is unstable,it will directly endanger the extension of National Highway 213,the resettlement site of the front edge of the landslide and the Zagunao River,and the direct economic loss will be about 5 million yuan.Through investigation,this paper has identified the geological conditions and deformation and failure characteristics of the unstable slopes of Huangyan.Based on the results of indoor geotechnical test,the calculation parameters of the landslide were obtained by using the C andφinversion methods and referring to other similar landslides.Using the limit equilibrium transfer coefficient method,the profile is selected to calculate the slope stability.The calculation results show that the slope will be unstable under earthquake and heavy rain conditions.Since the slope is located in the Wenchuan earthquake zone,in the rainy season,when a large earthquake or heavy rain occurs,the slope will be unstable.Engineering measures should be taken to deal with the main factors causing the slope instability,and the hidden dangers of geological disasters should be eliminated.
作者
王军
WANG Jun(North China Engineering Investigation Institute Co.,Ltd.,Shijiazhuang,Hebei 050021)
出处
《河北地质大学学报》
2018年第6期52-55,共4页
Journal of Hebei Geo University
关键词
汶川
黄岩
不稳定斜坡
稳定性分析
Wenchuan
Huangyan
instability slope
stability analysis
