Analysis on the Construction Technology of Excavating the Slag Guide Shaft in a Deep Shaft of a Diversion Tunnel
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摘要: 本文以导渣井施工为例，分析了其可行性和导渣井的作用。导渣井是根据输水隧洞和竖井施工的先后性而设计的导渣井形式。其通过合理的爆破半径和炸药量一次爆破成形，通过导渣井和竖井底部 5 m 段一次性爆破技术，成功地解决了竖井底部悬空状态施工，保证了施工安全和进度，大大减少了施工成本。Abstract: This article takes the construction of the slag guide well as an example to analyze its feasibility and the role of the slag guide well. The slag guide well is designed according to the sequence of the construction of the water tunnel and the shaft. Through the reasonable blasting radius and explosive quantity, it is formed by onetime blasting, andthrough the one-time blasting technology of the 5 m section of the bottom of the slag guide shaft and the shaft, it has successfully solved the suspended construction at the bottom of the shaft, ensuring construction safety and construction progress, and greatly reducing Construction cost.
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Key words:
- diversion tunnel /
- deep shaft /
- slag guide /
- excavation construction
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[1] 刘震,王晓玲,刘长欣,等.复杂长竖井引水隧洞施工通风两相流模拟研究[J].天津大学学报(自然科学与工程技术版),2018,51(11):1 139-1 146. [2] 王建峰,张宏仑,江河.巴贡水电站引水隧洞竖井上部钢平台拆除方案的设计与实施[J].四川水力发电,2009,28(s1):36-39. [3] 施伟.基于FBG的引水隧洞检修竖井安全监测系统应用研究[D].南京:南京理工大学,2016. -
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