摘要
钢管桩作为滑坡治理的有效支护方式,特别在牵引式顺层滑坡支护中尤为凸显,表现出不需大量开挖施工作业面、成孔较易、施工便捷等优势,且适应地层相对复杂、力学作用模糊的滑坡支护,具刚度大、抗变形及抗倾覆能力强等特点。笔者以贵州省锦屏县某安置区南东侧山体滑坡的治理工程为例,借鉴了滑坡治理相关研究理论及滑坡灾害的成功治理经验,根据滑坡破坏模式及特证,建立力学模型,通过传递系数法对边坡稳定性进行综合分析,探究边坡失稳的形成机制及稳定性分析理论、计算方法、钢管桩的作用机理及内力计算等,并用简易Bishop法加以验证,对钢管桩在牵引式顺层滑坡治理中的应用作了进一步论述,为类似工程实践作参考和借鉴。
Steel pipe pile as the effective supporting way of landslide,especially in the traction type bedding landslide support is particularly prominent,show the excavation operation,don’t need a lot of advantages of the more easily into a hole,construction is convenient,and adapt to the relatively complex formation,mechanical function of fuzzy slide support,stiffness big,resistance to deformation and the characteristics of strong ability to resist overturning.Taking the landslide treatment project in the southeast of a resettlement area in Jinping County,Guizhou Province as an example,the author drew lessons from the relevant research theories of landslide treatment and the successful treatment experience of landslide disaster.Based on the landslide failure mode and special evidence,the mechanical model was established and the comprehensive analysis of slope stability was carried out through the transfer coefficient method.The formation mechanism of slope instability,stability analysis theory,calculation method,action mechanism and internal force calculation of steel pipe pile are studied,and verified by simple Bishop method.The application of steel pipe pile in the treatment of tractive stratified landslide is further discussed,which can be used as reference for similar engineering practice.
作者
代思学
DAI Si-xue(Guizhou Non-ferrous Metals and Nuclear Industry Geological Exploration Bureau sixth Corps,Kaili 556000,China)
出处
《世界有色金属》
2022年第18期208-210,共3页
World Nonferrous Metals
关键词
金属桩
牵引式滑动
顺层滑坡
治理应用
Metal pile
Traction sliding
Bedding landslide
Management application
