惠州抽水蓄能电站高压斜井开挖方案选择

高压斜井施工技术是抽水蓄能电站地下洞室群施工的难点和关键之一,对此通过对国内外隧洞高压斜井各种开挖方式和技术的比较探讨,论证惠州抽水蓄能电站高压斜井开挖采用“先导井,后扩挖”法,导井采用反井钻机法,扩挖采用钻爆法的可行性和合理性,以供同类型工程参考。

Study on Inclined Penstock Excavating Technology in Huizhou Pumped Storage Power Station Project

The inclined penstock excavation technologies are key points in constructing underground tunnels and chambers of pumped storage power station.Through comparing and studying various domestic and overseas inclined penstock excavation methods,this article demonstrates the feasibility and rationality of the method in which pilot inclined shaft is formed firstly,then followed by expanding excavation for constructing inclined penstock of Huizhou pumped storage power station project.The pilot inclined shaft is excavated by raising reaming machine, while expanding excavation adopts a drilling and blasting method.This paper can set up samples for similar projects.