地下工程中洞室群开挖顺序优化研究

Study on Optimization of Excavation Sequence of Cavern Group in Underground Engineering

为确保地下工程中洞室群开挖过程的稳定性与安全性,本文以某水电站为例,利用三维数值计算分析软件FLAC3D进行分析,在拟定的三种开挖方案基础上,探究不同开挖顺序下地下洞室群围岩位移场和塑性区体积的差异,对比分析得到最合理的施工方案,为同类型工程施工方案的制定提供了理论依据和实践经验,具有借鉴意义。

In order to ensure the stability and safety of the excavation process of the cavern group in underground engineering,this paper takes a hydropower station as an example,uses the three-dimensional numerical calculation and analysis software FLAC3D to analyze,and explores the differences based on the three proposed excavation schemes The difference between the displacement field and the volume of the plastic zone of the underground cavern group under the excavation sequence is compared and analyzed to obtain the most reasonable construction plan,which provides theoretical basis and practical experience for the formulation of construction plans of the same type of engineering,which is of reference significance.