A statistical analysis of geomechanical data and its effect on rock mass numerical modeling:a case study
作者机构：Faculty of Mining and GeoengineeringAGH University of Science and Technologyal.Mickiewicza 3030-059 KrakówPoland Revoult Ltdal.Jana PawlaⅡ43a31-864 KrakówPoland
出 版 物：《International Journal of Coal Science & Technology》 (国际煤炭科学技术学报（英文）)
年 卷 期：2021年第8卷第3期
页 面：312-323页
核心收录：
学科分类：081901[工学-采矿工程] 0819[工学-矿业工程] 08[工学]
主 题：Statistical analysis Geotechnical data Laboratory tests on rocks Numerical modelling
摘 要：Geomechanical data are never sufficient in quantity or adequately precise and accurate for design purposes in mining and civil *** objective of this paper is to show the variability of rock properties at the sampled point in the roadway s roof,and then,how the statistical processing of the available geomechanical data can affect the results of numerical modelling of the roadway s *** cases were applied in the numerical analysis,using average values(the most common in geomechanical data analysis),average minus standard deviation,median,and average value minus statistical *** study show that different approach to the same geomechanical data set can change the modelling results *** case shows that average minus standard deviation is the most conservative and least *** gives the displacements and yielded elements zone in four times broader range comparing to the average values scenario,which is the least conservative *** two other cases need to be studied *** results obtained from them are placed between most favorable and most adverse *** the average values corrected by statistical error for the numerical analysis seems to be the best ***,the confidence level can be adjusted depending on the object importance and the assumed risk level.
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