摘要
Abstract
In this paper, the project of No. 1 water diversion tunnel at the hydropower station in Xi'an village of Zuoquan County are taken as an example, which passes below the existing No. 2 Banpo Tunnel of Yangquan-Shexian Railway. By using the empirical formula and numerical calculation method, this paper gives an analysis of the influence of the blasting construction of the new water diversion tunnel passing below the existing railway tunnel. Then, some technical parameters are obtained, including the control range of the blasting of the water diversion tunnel, the affected zones and the deformation rule of the existing railway tunnel. Finally, the paper offers the protective measures for the existing railway tunnel in the process of constructing of the water diversion tunnel so as to ensure the safety of the lining structure and train operation on the existing railway tunnel.关键词
引水隧洞/铁路隧道/下穿施工/爆破/影响分析Key words
water diversion tunnel/ railway tunnel/ construction below existing structure/ blasting/ influence analysis分类
交通工程
