基于精细三维地质建模的防渗帷幕优化设计研究
Research on optimization design of impermeable curtain based on fine three-dimensional geological modeling
黄小平 1蒋志坚 1平扬 2朱珍德 3吴俊宇3
作者信息
- 1. 深圳市水务规划设计院股份有限公司,深圳 518000
- 2. 中电建生态环境集团,深圳 518000
- 3. 河海大学岩土力学与堤坝工程教育部重点实验室,南京 210098
- 折叠
摘要
裂隙岩体渗流问题广泛存在于采矿、水利、边坡和地下工程之中,严重影响工程稳定性,给大坝防渗帷幕的设计带来了困扰.结合深汕水底山水库工程,针对重力坝绕坝裂隙岩体渗流问题,利用3DEC离散元数值模拟的方式,构建含裂隙网络的精细三维地质模型,对基于地勘信息的防渗帷幕初步设计方案进行岩体裂隙渗流分析,提出了右岸处防渗端界沿水平方向延伸以及左岸整体防渗墙深度向下延伸的建议.
Abstract
The seepage issues in fractured rock masses exist extensively in mining,hydraulic engineering,slope engineering,and underground engineering,which severely affect the stability of the projects and pose difficulties for the design of impervious curtains for dams.To solve the problem of fracture-type rock mass seepage in gravity dams,the 3DEC discrete element numerical simulation method was utilized to build a precise 3D geological model based on the Shenshan Underwater Reservoir Project including a fracture network,which conducts a detailed analysis of rock mass fracture-type seepage flow for the preliminary design scheme of seepage control curtain based on geological survey information.The preliminary design scheme of the anti-seepage curtain based on geological exploration information was analyzed for the seepage flow of rock fractures.Suggestions are proposed for the extension of the anti-seepage end boundary on the right bank horizontally and the downward extension of the overall anti-seepage wall depth on the left bank.
关键词
3DEC离散元/裂隙网络/渗流分析/防渗帷幕Key words
3DEC discrete element/fracture network/seepage analysis/impermeable curtain引用本文复制引用
基金项目
国家自然科学基金面上项目(51878249)
出版年
2024
国家科技期刊平台
NSTL
万方数据