Double-face intelligent hole position planning method for precision blasting in roadways using a computer-controlled drill jumbo  

作　　者：Haojun Wu Min Gong Renshu Yang Xiaodong Wu Xiangyu Liu 

机构地区：[1]School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2023年第6期1025-1037,共13页矿物冶金与材料学报（英文版）

基　　金：financially supported by the Fundamental Research Funds for the Central Universities(No.FRF-AT-19-005);the National Natural Science Foundation of China(No.51934001).

摘　　要：To solve the uneven burden of same-type holes reducing the blasting efficiency due to the limitation of drilling equipment,we need a double-face program-controlled planning method for hole position parameters used on a computer-controlled drilling jumbo.The cross-section splits into even and uneven areas.It also considers the uneven burden at the hole’s entrance and bottom.In the uneven area,various qualifying factors are made to optimize the hole spacing and maximize the burden uniformity,combined with the features of the area edges and gridbased segmentation methods.The hole position coordinates and angles in the even area are derived using recursion and iteration algorithms.As a case,this method presents all holes in a 4.8 m wide and 3.6 m high cross-section.Compared with the design produced by the drawing method,our planning in the uneven area improved the standard deviation of the hole burden by 40%.The improved hole layout facilitates the evolution of precise,efficient,and intelligent blasting in underground mines.

关 键 词：drill and blast method green mine blast design drilling jumbo BURDEN 

分 类 号：TD421.24[矿业工程—矿山机电]