基于3DEC的地下厂房硐室围岩离散元数值模拟  

A discrete element numerical simulation of the underground plant chamber perimeter rock conducted using the 3DEC method

作　　者：孙德铭 SUN Deming(Guangdong Hydropower Planning&Design Institute Co.,Ltd.,Guangzhou 510635,China)

机构地区：[1]广东省水利电力勘测设计研究院有限公司,广东广州510635

出　　处：《安徽水利水电职业技术学院学报》2024年第5期39-43,共5页Journal of Anhui Technical College of Water Resources and Hydroelectric Power

摘　　要：研究聚焦广东省潮州青麻园抽水蓄能电站地下厂房硐室。通过岩石试验和水力致裂技术,对钻孔岩样进行了分析,获取了地下厂房硐室围岩的基础数据。利用3DEC模拟软件构建了硐室围岩的三维离散裂隙网络(3D DFN),并模拟了厂房开挖后的围岩稳定性。分析结果显示,地下厂房在开挖后具有良好的稳定性。尽管厂房周边存在几个位移集中区,但整体位移量较小,因此仅需采取基本的挂网喷浆支护措施。A geological investigation was conducted in the underground plant chamber of the Chaozhou Qingmayuan Pumped Storage Power Station in Guangdong Province.The rock samples obtained from the boreholes were subjected to analysis through the application of rock testing and hydraulic fracturing techniques,with the objective of acquiring fundamental data pertaining to the geology of the surrounding area of the underground plant chamber.Three-dimensional discrete fracture network(3D DFN)modeling was conducted using 3DEC software to assess the stability of the refuge enclosure following the excavation of the underground plant.The analysis revealed that the plant's excavation would not significantly impact its overall stability.While there are some displacement concentration zones around the plant,the overall displacement is minimal,indicating that only basic support measures,such as hanging mesh grouting,would be necessary.

关 键 词：地下厂房 数值模拟 稳定性 

分 类 号：TV223[水利工程—水工结构工程]