顺层岩质边坡稳定性分析及加固设计研究
摘要:以南京市栖霞古镇顺层岩质边坡为例,采用极限平衡法和强度折减法对开挖后边坡的稳定性、失稳原因和变形特征进行分析。针对边坡潜在的滑坡问题进行加固设计,模拟不同长度和倾角组合下锚杆加固效果,根据边坡稳定性系数及锚固后边坡位移和应力分布情况,确定锚杆长度7 m、倾角20°为最佳方案,并结合其他加固措施提高边坡的稳定性,分析结果表明,加固后边坡稳定性系数满足规范要求,边坡位移控制在安全范围内,加固设计方案合理可行。
Abstract:Taking the bedding rock slope of Qixia Ancient Town in Nanjing as an example, the stability of the slope after excavation was studied by using the limit equilibrium method and the strength reduction method, and the causes of slope instability and deformation characteristics were analyzed. The reinforcement scheme was designed for the potential landslide problem of the slope, and the reinforcement effect of the bolt under different combinations of length and inclination angle was simulated. According to the slope stability coefficient and the displacement and stress distribution of the slope after anchoring, the bolt length of 7 m and inclination angle of 20° are determined as the best schemes. Combined with other reinforcement measures, the stability of the slope is improved. The analysis results show that the slope stability coefficient after reinforcement meets the specification requirements, and the slope displacement is controlled within the safe range. The reinforcement design scheme is reasonable and feasible.
中文标题:
顺层岩质边坡稳定性分析及加固设计研究
Stability Analysis and Reinforcement Design of Bedding Rock Slope
作者:
杨逸飞1,,孙少锐1,闵望2,喻永祥2,宋京雷2
Yang Yifei1,,Sun Shaorui1,Min Wang2,Yu Yongxiang2,Song Jinglei2
作者简介:杨逸飞,男,1997年生,硕士研究生,主要从事工程岩土体稳定性研究。E-mail:1306960209@qq.com
通讯地址:
1.河海大学地球科学与工程学院,江苏南京 211100 2.江苏省地质调查研究院,江苏南京 210000
1.SchoolofEarthScienceandEngineering,HohaiUniversity,Nanjing211100,Jiangsu,China 2.JiangsuGeologicalSurveyResearchInstitute,Nanjing210000,Jiangsu,China
中图分类号:TU 457
doi:10.3969/j.issn.1007-2993.2023.01.012
出版物:岩土工程技术
收稿日期:2021-11-12
刊出日期:2023-02-08
关键词:顺层岩质边坡,强度折减法,锚杆加固,锚杆长度,锚杆倾角
Key words:bedding rock slope,strength reduction method,anchor reinforcement,anchor length,anchor inclination
文档包含图片数量:图片(13)张
文档包含表格数量:表格(5)个
参考文献:
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基金项目:
基金项目:国家自然科学基金(41672258);江苏省国土厅科技计划项目(2018045)
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