京承三期高速公路高边坡勘察方法探讨  

Discussion on the Reconnaissance Method of High Slope of Jing-Cheng Third-Phased Expressway

作　　者：李春荣[1] 周磊[1] 郭萌 宋炜[1] 

机构地区：[1]北京市地质工程勘察院,北京100048 [2]北京市地勘局,北京100195

出　　处：《城市地质》2010年第2期9-13,共5页Urban Geology

摘　　要：京承高速公路的密云沙峪沟—北京市界段位于地质构造剥蚀低山丘陵区,全线桥隧工程比例高,工程多为深挖高填路段,路基挖方边坡的稳定性问题十分突出。在施工阶段进行了工程地质测绘、勘探、及现场试验,运用工程岩体质量RMR分类法和赤平极射投影法评价坡体的稳定性,为优选道路边坡加固方案提出了合理化建议。经施工实践证明,其建议效果良好。As a typical mountain expressway,Jing-cheng expressway（from Shayugou of Miyun to Beijing municipal boundary） is located in hilly area caused by tectonic denudation.Subjected to unique terrain restrictions, subgrade engineering digs deeply and fills high.And the expressway has lots of bridges and tunnels.So the problem of excavation slope stability is more pronounced.By using dynamic survey instruments,such as engineering geological mapping,exploration and field test survey instruments,RMR in rock mass classification and red even shoots the projection extremely,this paper evaluates the stability of the side slope and gives rationalization proposals of road construction and slope reinforcement program.The project practice shows that the effect is good.

关 键 词：公路高边坡 岩体质量RMR分类法和赤平极射投影法 坡体稳定性评价 

分 类 号：P642.22[天文地球—工程地质学]