一体化聚能水压爆破技术在软弱围岩隧道的应用

甘会莲,蒋新闻,陈志伟,乔永昕,陈淑华,王建国

Application of Integrated Shaped Water Pressure Blasting Technology in Soft and Weak Surrounding Rock Tunnels

Huilian GAN,Xinwen JIANG,Zhiwei CHEN,Yongxin QIAO,Shuhua CHEN,Jianguo WANG

表2 隧道掘进爆破参数

Table 2 Blasting parameters of tunnel excavation

炮孔类型 炮孔深度/m 炮孔个数/个 炮孔间距/m 孔径/mm 合计 - 125 - - 周边孔顶拱 4.0 15 0.4~0.5 40 周边孔左帮 4.0 10 0.4~0.5 40 周边孔右帮 4.0 10 0.4~0.5 40 内圈孔 3.5 30 0.6 40 辅助孔 3.5 36 0.5~0.7 40 掏槽孔 4.5 16 0.4~0.6 40 底板孔 4.5 8 1.0~1.2 40