三峡永久船闸二期工程开挖爆破对输水洞施工影响的研究

Inflnence of Excavation Blasting of Perpetual Shiplock at Three Gorges on Implementation of Conveyance Tunnel

三峡永久船闸二期工程开挖爆破受到施工支洞、输水洞 ,中隔墩的制约 ,爆破的规模受到很大的限制。本报告通过一期开挖工程监测资料分析 ,提出爆破振动衰减规律及施工支洞安全控制标准 ,为控制单响药量提供计算依据。根据实测资料 ,对输水洞施工受船闸开挖爆破影响问题进行了分析探讨 ,可供施工参考。

Through analyzing the data of excavation engineering at the first stage, the blasting vibration decay law and safety control standard of tunnel implementation are put forward, which provide the basis for controlling the explosive amount perdelay interval. The influence of excavation blasting of shiplock on the implementation of conveyance tunnel is analyzed.