摘 要
山区高速公路边坡稳定性评价与加固对策研究，旨在应对复杂地质条件下山区公路工程中边坡失稳带来的安全隐患。随着我国西部山区交通基础设施的快速发展，边坡失稳问题日益突出，传统的稳定性分析方法在多因素耦合作用下存在一定局限性。本研究综合运用地质调查、数值模拟与现场监测相结合的方法，构建了适用于山区高速公路边坡稳定性评价的技术体系，并提出了针对性的加固对策。通过引入改进型极限平衡法与FLAC3D三维数值模拟技术，提升了边坡稳定性分析的精度与适应性。研究结果表明，所提出的方法能够有效识别潜在滑动面及其影响范围，准确评估不同工况下的边坡安全系数。在此基础上，结合典型工程案例验证了锚固支挡、排水防护等加固措施的适用性与经济性。本研究的主要创新在于建立了考虑地质构造、降雨入渗和地震作用的多因素耦合分析模型，并提出了分级加固与动态设计的理念，为山区高速公路边坡工程的安全建设和长效运营提供了科学依据和技术支撑。
关键词：山区高速公路边坡稳定性评价；多因素耦合分析模型；改进型极限平衡法；FLAC3D三维数值模拟；分级加固与动态设计
ABSTRACT
This study focuses on the evaluation of slope stability and reinforcement strategies for mountainous expressways, aiming to address potential safety hazards caused by slope instability under complex geological conditions. With the rapid development of transportation infrastructure in western China, slope instability has become increasingly prominent, and traditional methods for stability analysis have certain limitations when multiple factors interact simultaneously. By integrating geological surveys, numerical simulations, and field monitoring, this research establishes a comprehensive technical fr amework for assessing slope stability along mountainous expressways and proposes targeted reinforcement measures. The accuracy and applicability of slope stability analysis are enhanced through the application of an improved limit equilibrium method and FLAC3D three-dimensional numerical simulation techniques. Results demonstrate that the proposed approach can effectively identify potential sliding surfaces and their influence zones, enabling precise evaluation of slope safety factors under various operational conditions. Furthermore, typical engineering cases are analyzed to verify the applicability and economic efficiency of reinforcement measures such as anchoring retaining structures and drainage protection systems. The main innovations of this study include the development of a multi-factor coupled analytical model that accounts for geological structure, rainfall infiltration, and seismic effects, as well as the introduction of a concept involving graded reinforcement and dynamic design. These contributions provide scientific support and technical guidance for the safe construction and long-term operation of slope engineering projects along mountainous expressways.
Keywords: Mountainous Highway Slope Stability Evaluation; Multi-factor Coupling Analysis Model; Improved Limit Equilibrium Method; FLAC3D Three-dimensional Numerical Simulation; Graded Reinforcement And Dynamic Design
目 录
摘 要 I
ABSTRACT II
第1章 绪论 2
1.1 研究的背景与意义 2
1.2 研究现状 2
1.3 本文研究方法与技术路线 2
第2章 山区高速公路边坡地质特征与影响因素分析 4
2.1 区域地质构造对边坡稳定性的影响 4
2.2 岩土性质与边坡失稳机制的关系 4
2.3 水文气象条件对边坡稳定性的干扰作用 5
2.4 典型路段边坡地质特征案例分析 5
第3章 山区高速公路边坡稳定性评价方法研究 6
3.1 基于极限平衡法的边坡稳定性定量分析 6
3.2 数值模拟在边坡稳定性评价中的应用 6
3.3 多因素综合评价模型构建与验证 7
3.4 不同评价方法在典型工程中的对比分析 7
第4章 山区高速公路边坡加固技术与对策研究 9
4.1 主动防护与被动防护技术适用性比较 9
4.2 锚固支挡结构的设计与施工要点 9
4.3 排水系统优化对边坡稳定的提升作用 10
4.4 加固措施在典型不稳定边坡中的应用效果 10
结论 11
参考文献 12
致 谢 13
