浅谈城镇供水工程全圆小断面隧洞钻爆设计方案

A Brief Discussion on the Design Scheme of Tunnel Drill Blasting with Full Circle Small Section of Urban Water Supply Project

目前,我国北方地下水严重超采,各地方城镇用水多采用地表水源,城镇附近的水库供水成为主要供水方式,从水库取水多采用小断面圆形有压隧洞。论文通过黑龙江尚志市幸福沟水库供水隧洞开挖爆破设计,总结小断面隧洞爆破设计的特点和规律,为同类工程施工提供爆破设计思路。

At present, the over exploitation of the underground water is occurred in north China, the local town often uses surface water sources, the reservoir water supply become the main water supply method, and the reservoir near the town. The water from the reservoir is mostly taken in small circular cross section pressure tunnel. This paper takes the design scheme of tunnel blasting, the tunnel is transiting the water form the Xingfugou reservoir in Shangzhi city of Heilongjiang province, summarizes the characteristics and rules of the small section tunnel blasting design, to provide blasting design idea for similar engineering.