光面爆破技术在竖井施工中的应用  

Application of smooth blasting in shaft construction

作　　者：徐庆[1] 王浩 杨文[3] 

机构地区：[1]三峡大学地质灾害防治研究院,湖北省宜昌市443002 [2]中国葛洲坝集团股份有限公司溪洛渡施工局,四川省雷波县616550 [3]中南勘测设计研究院宜昌分院,湖北省宜昌市443002

出　　处：《西北水电》2010年第2期54-56,共3页Northwest Hydropower

摘　　要：溪洛渡水电站左岸地下厂房出线竖井开挖断面为11.5 m,开挖深度为237.9 m,围岩主要为Ⅱ,Ⅲ类玄武岩。在中导洞及两侧扩挖采用了预裂和光面爆破技术,根据洞身围岩的岩石特点,对光面爆破的爆破参数进行了精心的设计,取得了令人满意的效果。The excavation section of the out - going line shaft for the left bank underground powerhouse of Xiluodu hydropower project is 11.5 m and the excavation depth is 237.9 m. The surrounding rock is mainly consisted of class Ⅱ and m basalts. Presplit blasting and smooth blasting were applied in extension excavation of middle pilot tunnel and both sides, parameters of smooth blasting were carefully designed according to the characteristics of surrounding rocks, which gives satisfied results.

关 键 词：竖井 光面爆破 爆破参数 溪洛渡水电站 

分 类 号：TV554[水利工程—水利水电工程]