白云石大理岩HJC本构参数确定及应用OA

With the increasingly stringent control of explosives,the demand for construction safety and cost control is also increasing.As a fast,economical and effective means,numerical simulation technology has the ability to quickly test various parameter combinations between the laboratory and the field.Through numerical simulation,the experimental results can be obtained in advance,and the construction parameters can be adjusted quickly,so as to reduce the project cost.The goal of this study is to determine the HJC constitutive parameters of dolomite marble at the construction site through rock mechanics tests,and to carry out numerical simulation experiments using the real parameters of on-site rock to improve engineering safety and reduce cost.Based on the HJC constitutive parameters of dolomite marble obtained by on-site rock mechanics experiments,the final errors between the section area,width and height of the cutting cavity and the numerical simulation results are all less than 6%.It is verified that the numerical simulation results of the accurate constitutive model parameters obtained by the rock mechanics test are highly consistent with the field construction results.