多种监测方式下的地下厂房围岩变形分析

Deformation Analysis of Surrounding Rock of Underground Powerhouse under Various Monitoring Methods

本文以镇安抽水蓄能电站地下厂房为研究对象,结合多点位移计、柔性测斜仪等多种设施监测成果,对开挖过程中的变形规律进行分析。结果显示,地下厂房围岩在开挖过程中的变形分布符合高边墙的一般规律,变形过程与现场施工节点基本吻合;另一方面,将柔性测斜仪应用于地下厂房变形监测中,不仅可以提高变形监测数据的实时性,而且具有观测精度高、观测范围广等特点,可为工程的安全运行提供重要的依据。

This paper takes the underground powerhouse of Zhen’an pumped storage power station as the research object. Combined with multi-point displacement meter, array displacement meter and other facilities monitoring results. The deformation law of surrounding rock during excavation is analyzed. The results show that the deformation distribution of the surrounding rock of the underground powerhouse in the excavation process accords with the general law of high side wall, and the deformation process is basically consistent with the site construction node. On the other hand, the application of array displacement meter in deformation monitoring of underground workshop can not only improve the real-time performance of deformation monitoring data, but also has the characteristics of high observation accuracy and wide observation range, which can provide an important basis for the safe operation of engineering.