摘要
宝兴水电站306.57m长的陡倾压力斜井导洞原施工方案为上部人工正导井下挖和爬罐反导井上挖施工,后因地质原因,人工正导井和爬罐施工先后停止,改为采用反井钻进行导井开挖。通过对倾角为60°的Ⅳ、Ⅴ类软弱白云岩斜井中采用反井钻悬空施工的技术总结,为类似工程的施工提供一定的指导作用。
For 306.57m long and steep pressured inclined shaft at Baoxing hydropower station,the pilot shaft is originally to be excavated in two directions from top downward by manpower and from bottom upward by using creeping cage.Finally reverse drilling is selected in pilot shaft excavation for geological reasons.Technique summaries for reverse drilling construction in in- clined shaft with dip of 60°inⅣandⅤweak dolomites are provided for the similar projects.
出处
《四川水力发电》
2007年第A01期40-42,48,共4页
Sichuan Hydropower
关键词
光面爆破
锚喷支护
反井钻机
顶托
宝兴水电站
施工技术
smooth blasting
shotcrete and rockbolting
reverse drill
jacking
Baoxing hydropower station
