关键词: 矿区地质建模　, 3DMine　, BIM技术　, 地质数据

Abstract: The three-dimensional geological model of the mining area plays a crucial role in mineral resource exploration and development,as it helps to depict the structure of the deposit,optimize the mining plan and enhance the resource utilization rate.To improve the accuracy of the three-dimensional model of the mining area,by integrating 3DMine with Building Informa tion Modeling (BIM),a three-dimensional geological modeling method for the mining area is proposed.Firstly,the 3DMine modeling is completed through processes such as establishing the geological database,constructing DTM,generating the entity model and block model of the mining area.Then,BIM modeling is accomplished through data format conversion and information classification storage processes.Subsequently,through the development of data interaction interfaces and information association technologies,the integrated modeling results of 3DMine and BIM are achieved,ultimately realizing the three-dimensional mod eling with multi-source information coupling.The experiments show that in the six typical cross-sections selected,the average error of the horizontal direction contour fitting of the entity model of the mining area is concentrated within 0.25 m to 0.34 m, with the error in the undulating terrain area ranging from 0.29 m to 0.34 m,and the error in the flat area being as low as 0.25 m to 0.29 m;the average error in the elevation direction is 0.29 m to 0.37 m,and in the undulating area,due to the large ter rain curvature,the error increases to 0.35 m to 0.37 m,but is overall within 0.4 m.The test results verify the reliability of the integrated modeling method of 3DMine and BIM,with the horizontal direction accuracy meeting the requirements for locating the mine body boundary in mining engineering,and the elevation error pattern conforming to the characteristics of discrete data interpolation.The research results can provide intuitive,accurate and multi-information integrated data support for mining pro duction planning,mining design and resource management,helping to improve the efficiency and scientificity of mining produc tion management.