富含云母围岩隧洞开挖爆破掏槽参数探索  

Exploration on Blasting Cutting Parameters for Tunnel Excavation in Mica-rich Surrounding Rock

作　　者：林伟 吴常波 LIN Wei;WU Changbo(Mianyang Jiacheng Construction Co.,Ltd.,Mianyang Sichuan 621054;Danba Jieermei Hydropower Development Co.,Ltd.,Chengdu Sichuan 626399)

机构地区：[1]绵阳佳成建设有限公司,四川绵阳621054 [2]丹巴洁尔美水电开发有限公司,四川成都626399

出　　处：《四川水力发电》2024年第6期125-129,共5页Sichuan Hydropower

摘　　要：磨子水电站位于四川省甘孜州丹巴县境内,地处革什扎河左岸一级支流磨子沟下游河段。电站装机2台,单机容量35 MW,总装机容量70 MW,引水隧洞全长8 931.65 m,采用“一坡到底”的布置形式,其围岩主要为二云英片岩,岩石中云母含量高,岩石软硬变化大。结合现场情况,对多种隧洞爆破掏槽的型式进行了试验、总结,得出了适合富含云母的小断面隧洞爆破开挖参数,可供同类工程参考。Mozi Hydropower Project is located in Danba County,Ganzi Prefecture,Sichuan Province,in the lower reaches of Mozigou,in the first-class tributary on the left bank of Geshizha River.The project has 2 installed units,with a single unit capacity of 35 MW and a total installed capacity of 70MW.The total length of the diversion tunnel is 8931.65m,and the layout form of"one slope to the bottom"is adopted.Its surrounding rock is mainly two-mica quartz schist,with high mica content and great changes in rock hardness.Combined with the field situation,various types of tunnel blasting cut are tested and summarized,and the blasting excavation parameters suitable for mica-rich small-section tunnel are obtained,which can be used as reference for similar projects.

关 键 词：富含云母 隧洞小断面开挖 爆破 掏槽 

分 类 号：O643.223[理学—物理化学]