安全监测是保障大型地下厂房施工期和运行期围岩稳定的重要技术手段，亦可用于反馈设计和指导施工。利用施工期和运行期安全监测成果，分析研究了白莲河抽水蓄能电站地下厂房围岩变形、支护锚杆应力、锚索锚固力、格构梁钢筋应力等的变化过程和相互影响规律，并对地下厂房围岩的稳定性进行了综合评价。结果表明：电站地下厂房围岩最大表面变形15.79 mm，最大锚杆应力150.5 MPa，最大钢筋拉应力63.76 MPa，最大钢筋压应力75.56 MPa，且各项测值已趋于稳定，围岩在经历施工期快速变形和蠕动变形后已经趋于稳定。

Safety monitoring is an important technical approach of safeguarding the stability of surrounding rockmass in large underground powerhouse during construction and operation, and can also be adopted in feedback design and construction guidance. Based on safety monitoring data of Bailianhe underground powerhouse during construction and operation, the authors analyzed the variation and the regularity of mutual impact of rock deformation, anchor bar stress, anchor force, steel-bar stress in the surrounding rockmass and evaluated its stability. Results showed that the maximum surface deformation of the underground powerhouse reached 15.79mm, the maximum anchor bar stress 150.5MPa, the maximum steel-bar tensile stress 63.76MPa and the maximum steel-bar compressive stress 75.56MPa. All of them were stabilized. It's concluded that the surrounding rockmass has tended to be stable in the subsequence of rapid deformation and creep deformation caused by construction.