摘要
阐述了边坡变形监测点优化布置的必要性和重要性,认为变形监测的主要目的是判断边坡稳定状态及反演岩体参数。从理论上推导了变形监测误差与边坡稳定状态、变形监测误差与岩体反演参数的关系,由此提出了变形监测点优化布置的相对误差判断及敏感性判断准则,并介绍了相应的变形监测点优化布置方案。以某高边坡为依托工程,采用数值计算方法,详细分析了安全系数及变形模量变化下测点各自位移变化规律,提出了变形监测点优化布置方案。
The necessity and significance of optimal placement of monitoring spots in slope engineering are elaborated.Deformation monitoring is aimed at judging slope stability and obtaining mechanical parameters of rock mass by means of parametric inversion.The relationships between error in deformation monitoring and stability state of the slope as well as the result of parametric inversion were derived based on the theory.From that,the estimation formulas for relative error and sensitivity in the optimal placement of monitoring spots and the solution to optimal placement for deformation monitoring spots were presented.Based on a high-slope engineering,the displacement variation rule of each monitoring spot was analyzed by means of numerical analysis when safety factor and deformation modulus changed.The optimal placement design for monitoring spots is put forward.
出处
《矿冶工程》
CAS
CSCD
北大核心
2010年第6期18-22,共5页
Mining and Metallurgical Engineering
关键词
变形监测点
反演岩体参数
相对误差
敏感性
优化布置
monitoring spot for deformation
back analysis of rock mass parameters
relative error
sensitivity
optimal placement