乌龙山抽水蓄能电站地下厂房洞室围岩稳定性分析研究

浙江乌龙山抽水蓄能电站地下厂房,地质条件复杂,岩性变化大,结构面较发育,其稳定性是本工程最主要的环节。应用地下厂房围岩的组成、结构、物理力学特性、水文地质条件、地应力等方面的试验资料,重点对地下厂房围岩的稳定性进行了块体稳定、平面有限元、岩爆等分析研究,分析总结出了洞室稳定条件及可能的变形破坏方式,为工程设计及施工方法的制定提供了依据,并提出了相应的工程处理建议方案。

On rockmass stability of underground powerhouse for Wulongshan pumped storage station

With complicated geological conditions,big variation of lithology and developed structural plane,the stability of underground powerhouse is the uppermost key point for Wulongshan pumped storage station in Zhejiang Province.Based upon test data,the analyses were mainly made for the stability of rock mass,plane finite element,rockburst in terms of the composition,structures,physical mechanical properties,hydrogeological conditions,ground stress of rockmass for the underground powerhouse.It is concluded that the stability condition of caverns and potential deformation mode have provided the bases to work out project design and construction method,and the corresponding engineering treatment schemes are brought up.