摘要
本研究针对江北区某新建电力铁塔对隧道下部的影响进行了全面分析，旨在确保隧道的安全运营。通过收集和分析国内外相关文献，本研究建立了电力铁塔对隧道下部影响的理论模型，为后续的数值模拟和试验研究提供了指导。研究聚焦于电力铁塔荷载对隧道沉降、变形及稳定性的影响，通过FLAC-3D软件建立数值模型，分析并预测了不同荷载条件下隧道的响应。此外，本研究还探讨了电力铁塔产生的危害对隧道内人员和设备的影响，并基于这些分析提出了针对性的安全保护措施。
在安全保护措施的设计中，本研究考虑了多种隧道支护方案，如抗滑桩、锚杆、挡墙等，并绘制了相应的设计图纸。在支护方案的设计过程中，通过数值模拟计算了支护后的隧道安全性，确保满足安全要求。同时，本研究还深入了解了隧道安全设计相关的法律法规、标准规范和技术要求，并结合近年来因隧道施工导致电力铁塔发生意外的案例，提出了经济合理的隧道安全设计方案。
本研究不仅为电力铁塔与隧道共存项目的安全设计提供了理论依据和实践指导，也为类似项目的安全评估和保护设计提供了有价值的参考。
关键词：电力铁塔；隧道下部影响；数值模拟；安全保护措施；FLAC-3D
Abstract
This study makes a comprehensive analysis of the impact of a new power tower on the lower part of the tunnel, aiming to ensure the safe operation of the tunnel. By collecting and analyzing relevant literature at home and abroad, the theoretical model of the influence of power tower on the lower part of the tunnel is established in this study, which provides guidance for the subsequent numerical simulation and experimental research. Focusing on the influence of power tower load on tunnel settlement, deformation and stability, the numerical model was established by FLAC-3D software to analyze and predict the response of the tunnel under different load conditions. In addition, this study explores the impact of power tower hazards on personnel and equipment in the tunnel, and proposed targeted safety protection measures based on these analyses.
In the design of safety protection measures, this study considered various tunnel support schemes, such as anti-skid pile, anchor rod, retaining wall, and drew the corresponding design drawings. During the design of the support scheme, the safety of the supported tunnel is calculated by numerical simulation to meet the safety requirements. At the same time, this study also has a deep understanding of the relevant laws and regulations, standards and technical requirements of tunnel safety design, and combined with the tunnel construction caused by power tower accident cases in recent years, put forward an economical and reasonable tunnel safety design scheme.
This study not only provides the theoretical basis and practical guidance for the safety design of the power tower and tunnel coexistence projects, but also provides a valuable reference for the safety assessment and protection design of similar projects.
Key words: power tower; influence of lower tunnel; numerical simulation; safety protection measures; FLAC-3D
目 录
摘要
Abstract
1绪论
1.1课题选题背景、目的及意义
1.1.1选题背景
1.1.2目的及意义
1.2国内外研究现状分析
1.2.1国外研究现状
1.2.2国内研究现状
1.3 研究主要内容
2. 三维数值分析建模与软件系统概述
2.1 项目工程概述
2.1.1三维数值分析建模
2.1.2软件系统概述
2.2 数值分析的建模依据
2.3计算分析参照的标准规范
2.4数值计算的建模原则与计算模型概述
2.5数值分析用的FLAC3D软件系统介绍
3 三维数值模拟的建模
3.1 计算域的确定
3.2 建筑物荷载条件
3.3 边界条件确定
3.4材料模型以及变形模式
3.5 计算模型概述
4 数值模拟与结果分析
4.1 先开挖左侧隧道，再开挖右侧隧道
4.1.1 第一步，先开挖左侧隧道
4.1.2 第二步，开挖右侧隧道
4.2.1 第一步，先开挖右侧隧道
4.2.2 第二步，开挖左侧隧道
4.2数值计算分析结论
5 总结与展望
5.1 总结
5.2 展望
参考文献
致 谢
