隧洞开挖光面爆破装药结构的改进与应用  

Improvement and application of charging structure of smooth blasting in tunnel excavation

作　　者：杨玉银[1] 陈长贵[1] 黄浩[1] 黄勇[1] 刘志辉[1] 张健鹏[1] 张永强[1] 廖志华[1] 

机构地区：[1]中国水利水电第五工程局有限公司,成都610066

出　　处：《工程爆破》2016年第4期72-76,86,共6页Engineering Blasting

摘　　要：为了解决乌干达卡鲁玛尾水隧洞光面爆破施工中,无专用光爆细药卷（φ20-22mm）,且竹片难于买到,无法绑扎光爆药串等问题,在8^#、9^#、10^#支洞及主洞开挖爆破施工中做了一系列光面爆破装药结构改进实验。采用（φ25-32mm）常规药卷,在其未与导爆索绑扎的条件下,导爆索成功起爆了光爆孔内按设计线装药密度装入的间隔装药,且取得了理想的光爆效果。实验及应用情况表明：在φ42mm光爆孔内,导爆索与一定间距（〉50cm）的间隔装药在孔内自由分布、未绑扎的条件下,导爆索完全能够起爆孔内的间隔装药,这就简化了传统的光爆药串加工工艺,改变了隧洞开挖中传统的光爆孔内装药结构。There was no special thin cartridge explosives（φ20 -22 mm）,bamboo was difficult to buy and the cartridge explosives were not binding to detonating fuse during the Adit-8？ Adit-9,Adit-10 tunnel construction in Uganda Karuma HPP TRT Project. In order to solve the issues, a series of improvement experiments of smooth blasting charging structure were conducted. The normal cartridge explosives （φ 25-32 mm） were used without binding to detonating fuse, but deck charging designed according to line charge concentration was successfully detonated by detonating fuse in the smooth blasthole. The ideal smooth blasting effect was achieved. The experiment and application indicated that deck charging in a certain distance（〉50 cm） with detonating fuse in 9-42 mm smooth blasthole could be detonated by detonating fuse, even cartridge explosives were arranged randomly and not binding to detonating fuse. The traditional cartridge explosive processing method was simplified and the traditional charging structure of smooth blasting in tunnel excavation was changed.

关 键 词：隧洞 开挖 光面爆破 装药结构 间隔装药 导爆索 

分 类 号：TD854.2[矿业工程—金属矿开采]