某项目顺层边坡的稳定性计算分析与失稳预防处置
Stability Calculation & Analysis and Instability Prevention Treatment of Bedding Slope of a Project
李晓彤 1李兴1
作者信息
- 1. 北京市市政工程设计研究总院有限公司,北京 100082
- 折叠
摘要
顺层边坡是山区公路建设中常见的一种不良地质,而且由于软弱结构层的存在,其具有比普通边坡更复杂的地质破坏模式,施工过程中在外力的扰动下极易发生失稳.因此,为了减少顺层边坡施工过程中的失稳破坏,提前对边坡采取了有效的预防措施,即:通过对已滑移段顺层边坡进行反演,计算得到了滑体结构面的相关参数;再根据计算所得结构面参数,模拟分析未滑移段顺层边坡的稳定性,确定了边坡支护所需的剩余下滑力;最后提出了针对性预防措施并加以实施,最终提高了边坡的稳定性.该方法能够在边坡发生较小范围破坏时,模拟获得稳定性参数,并对顺层边坡进行处理;同时可为相同地质条件的边坡防护提供参考,以避免更大范围的边坡失稳破坏,达到防患于未然的目的.
Abstract
Bedding slope is a common unfavorable geological condition in mountain highway construction.Due to the existence of weak structural layers,it has a more complex geological failure mode than ordinary slopes that is prone to instability under external force disturbance during construction.Therefore,in order to reduce the instability fail-ure,the effective preventive measures were taken in advance for the slope.Namely,the bedding slope of the sliding section was inverted to calculate the relevant parameters of the sliding body structural plane;Based on the calculat-ed structural plane parameters,the stability of the non-sliding section bedding slope was simulated and analyzed to determine the remaining sliding force required for slope support;Finally,the targeted preventive measures were proposed and implemented,which ultimately improved the stability of the slope.When a small range of failure oc-curs in the slope,the stability parameters can be simulated and obtained,the bedding slope be treated by this method;At the same time,it can provide reference for slope protection under the same geological conditions to avoid larger slope instability failure for a preventive role.
关键词
山区公路/顺层边坡/软弱结构层/失稳破坏/反演/预防措施Key words
mountain highway/bedding slope/weak structural layer/instability failure/inversion/preventive measure引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据