基于正交试验的小断面巷道掏槽爆破参数确定

章逸锋,李洪超,张智宇,李恒

Determination of Blasting Parameters for Excavation and Cutting of Small Section Roadways Based on Orthogonal Experiments

Yifeng ZHANG,Hongchao LI,Zhiyu ZHANG,Heng LI

表5 炮孔利用率极差分析

Table 5 Analysis of positive difference of blast hole utilization range

目标参数 试验指标 Kij A B C D 炮孔利用率 Ki1 455 523 405 470 Ki2 476 488 468 463 Ki3 460 380 518 458 k i1 75.8 87.7 67.5 78.3 k i2 79.3 81.3 78.0 77.2 k i3 76.7 63.3 86.3 76.3 极差R 3.5 24.0 18.8 2.0 因素主次顺序 BCAD 最优水平组合 B1C3A2D1