摘要
岩质边坡的稳定性主要受结构面控制,利用赤平投影方法可以对含有结构面的岩质边坡的稳定性进行定性分析,此方法已被广泛应用于工程建设中。通过阐述赤平投影基本原理与岩质边坡稳定性评价标准,定性分析了平面滑动和楔形状滑动的不同稳定条件,进而反映了边坡的整体稳定性,为边坡的防治提供了依据。以江苏省镇江市句容宝华镇某岩质边坡为实例,采用赤平投影方法,通过对地层层面和两组主要发育的节理进行赤平投影分析,认为该场地B区东边坡和D区北坡处开挖后处于较不稳定状态,建议开挖后进行安全支护处理。
The stability of rock slope is mainly controlled by structural plane.The stereographic projection method can be used to qualitatively analyze the stability of rock slope with structural plane.This method has been widely used in engineering construction.By expounding the basic principle of stereographic projection and the evaluation standard of rock slope stability,this paper qualitatively analyzes the different stability conditions of plane sliding and wedge-shaped sliding.It further reflects the overall stability of the slope and provides a basis for the prevention and control of the slope.Taking a rock slope in Baohua Town,Jurong,Zhenjiang as an example,the stereographic projection method is used to analyze the stratigraphic layer and two groups of mainly developed joints.It is considered that the east slope of area B and the north slope of area D are in a relatively unstable state after excavation,and it is recommended to carry out safe support treatment after excavation.
作者
陈新德
张映满
解国爱
CHEN Xinde;ZHANG Yinman;XIE Guoai(School of Earth Sciences and Engineering,Nanjing University,Nanjing 210023,China;Jiangsu Geological Engineering Survey Institute,Nanjing 210012,China)
出处
《四川建材》
2022年第10期86-88,93,共4页
Sichuan Building Materials
基金
国家自科基金资助项目:华北中部新太古代-古元古代镁铁质火成岩地幔源区性质随时间变化的地球化学研究(42072218)。
关键词
岩质边坡
赤平投影
稳定性
定性分析
rock slope
stereographic projection
stability
qualitative analysis
