摘要
为克服SMR(边坡岩体分级)法已有连续函数修正拟合精度不高的缺点,基于离差平方和最小原理,采用新的连续函数对"表格式评分"的SMR法进行了修正,给出了点荷载强度、单轴抗压强度、岩体质量指标、不连续面间距、不连续面产状调整系数、不连续面延伸长度、张开度及充填物厚度评分的连续函数.用新提出的修正SMR的连续函数对水电、矿山、公路等57个边坡岩体进行了稳定性分级,剩余标准差为2.180,相关系数为0.996 7,比其他修正SMR法更接近表格式SMR法的评分结果.
In order to raise fitting accuracy of the existing modified continuous functions for slope mass rating（SMR）,based on the least-squares-fit algorithm,the table-form-rating SMR was modified by using new continuous functions.Continuous fitting functions of ratings for point-load strength,uniaxial compressive strength,rock quality designation,discontinuity spacing,persistence,separation width,filling thickness and geometric correction factor for discontinuity and slope surface were proposed.These proposed functions were used for the fitting analyses of 57 slopes from hydropower stations,mines and highway projects.The fitting result shows that the residual standard deviation is 2.180 and the correlation coefficient is 0.996 7,and compared with other modified SMR systems,rating result of the SMR system modified by using the above continuous functions is closest to result of the table-form-rating SMR system.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2011年第1期36-41,共6页
Journal of Southwest Jiaotong University
基金
上海市重点学科建设资助项目(B308)
关键词
边坡岩体分级
拟合精度
离差平方和最小原理
连续函数
slope rock mass rating
fitting accuracy
least-squares-fit algorithm
continuous function
