摘要
针对三维极限平衡法分析边坡稳定时不能搜索最危险滑动面的问题,以索风营水电站Dr2危岩体加固工程为研究对象,采用果蝇优化算法搜索危岩体的滑动面,采用改进的三维极限平衡法对危岩体进行抗震稳定计算,提出基于果蝇优化算法的危岩体危险滑动面搜索方法,并分析了危岩体各种加固措施对稳定的贡献度。结果表明:加固后的危岩体在地震工况下可以维持稳定,其中泥岩灌浆对稳定的贡献最大,顶部锚索贡献最小。该方法弥补了传统极限平衡法无法所搜滑动面的缺陷,提高了边坡失稳的预测精度,可为类似工程提供一定的参考。
The three-dimensional limit equilibrium method cannot search the most dangerous sliding surface when analyzing the slope stability.Taking the Dr2 dangerous rock mass reinforcement project of Suofengying Hydropower Station as the research object,the fruit fly optimization algorithm(FOA)was used to search the sliding surface of the dangerous rock mass.An improved 3 D limit equilibrium method was used to calculate the seismic stability of dangerous rock mass.A dangerous sliding surface search method based on the FOA was proposed and the contribution of various reinforcement measures to stability was analyzed.The results showed that the strengthened dangerous rock mass can maintain stability under the earthquake condition,and mudstone grouting contributes the most to the stability,and the top anchor cable contributes the least to the stability.This method helps solve the defect that the traditional limit equilibrium method cannot search the sliding surface,improves the prediction accuracy of slope instability,and can provide some reference for similar projects.
作者
常晨莹
林川
袁占军
赵兰浩
CHANG Chenying;LIN Chuan;YUAN Zhanjun;ZHAO Lanhao(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China;Water Supply Bureau,Yellow River Conservancy Commission,Zhengzhou 450003,China)
出处
《水资源与水工程学报》
CSCD
2019年第2期205-211,共7页
Journal of Water Resources and Water Engineering
基金
国家重点研发计划项目(2018YFC0406705
2016YFC0401601)
关键词
危岩滑动面
果蝇优化算法
三维极限平衡法
稳定分析
安全系数
dangerous sliding surface
FOA(fruit fly optimization algorithm)
three-dimensional limit equilibrium
stability analysis
safety factor