摘要
为了分析不同采场边壁粗糙度特性,基于中关铁矿阶段空场嗣后充填采场激光三维扫描点云数据,对采场边壁进行网格划分,对各个网格数据使用水平等间距采样、竖直等间距采样、旋转采样方法,通过Z2与JRC之间的回归关系式,计算采场空场不同位置边壁——顶板、底板、两侧边壁、前后边壁的粗糙度系数JRC。结果表明:无论是竖直采样、水平采样,还是旋转采样,同一采场边壁粗糙度大致相近,JRC随采样角度变化波动较大,存在各向异性。
In order to analyze the roughness characteristics of different stope sidewalls,based on the 3D laser scanning point cloud data of open stope with delayed filling in Zhongguan Iron Mine,the stope sidewall is divided into grids.The horizontal equidistant sampling,vertical equidistant sampling and rotational sampling methods are used for each grid data.Through the regression relationship between Z2 and JRC,the roughness coefficient JRC of the sidewalls at different positions including the sidewalls on open stope-roof,on floor,side walls on both sides,in the front and rear side walls is calculated.The results indicate that whether it is vertical sampling,horizontal sampling,or rotational sampling,the roughness of the same stope sidewalls is approximately similar.The JRC fluctuates significantly with the changes in the sampling angle,indicating anisotropy.
作者
王志国
方博然
吴仪慧
张守印
石浩淏
WANG Zhiguo;FANG Boran;WU Yihui;ZHANG Shouyin;SHI Haohao(College of Mining Engineering,North China University of Science and Technology,Tangshan,Hebei 063210;Innovation Center for Green and Intelligent Mining Technology of Mines in Hebei Province,Tangshan,Hebei 063210)
出处
《有色金属设计》
2024年第4期19-25,30,共8页
Nonferrous Metals Design
基金
河北省中央引导地方科技发展资金项目(246Z4207G,246Z4101G)。
作者简介
王志国(1969-),男,河北香河人,工学博士,教授。主要研究方向:采矿与岩石力学;通讯作者:方博然(1997-),男,山东日照人,硕士。主要研究方向:矿山岩石力学。
