土工基础

土工基础 ›› 2026, Vol. 40 ›› Issue (3): 498-501.

• 专题论述 • 上一篇    下一篇

泥浆护壁下桩孔开挖对边坡稳定性的影响

袁 航1，卢 浩2，李 帅3   

  1. （1.汉中市建工质量检测有限责任公司，陕西汉中 723000；2.广东华路交通科技有限公司，广州 510550；3.云基智慧工程股份有限公司，广东深圳 518000）
  • 收稿日期:2025-05-31 修回日期:2025-06-06 出版日期:2026-06-30 发布日期:2026-06-25
  • 通讯作者: 卢浩(1988-)，男，博士，高级工程师，研究方向为公路路基边坡检测、监测、评估咨询等。
  • 作者简介:袁航(1992-)，男，硕士，工程师，注册岩土工程师，研究方向为岩土工程设计及地基基础检测。

Influence of Borehole Drilling with Slurry on the Slope Stability

YUAN Hang1, LU Hao2, LI Shuai3   

  1. (1.Hanzhong Construction Engineering Quality Inspection Co. Ltd, Hanzhong 723000;
    2.Guangdong Hualu Transportation Technology Co., Ltd., Guangzhou 510550;
    3.Yunji Intelligent Engineering Co., Ltd., Shenzhen 518000)
  • Received:2025-05-31 Revised:2025-06-06 Online:2026-06-30 Published:2026-06-25

摘要： 针对大直径泥浆护壁成孔灌注桩桩孔开挖对边坡稳定性的影响，以某城市快速路桥梁桩基工程为例，通过数值模拟分析不同桩孔开挖阶段边坡变形与安全系数的演化规律。研究表明：桩孔开挖前期会显著降低桩顶平台以上边坡的安全系数，后续开挖影响趋缓；当桩孔在边坡后缘且与坡顶线具有足够距离时，开挖对该级边坡的影响较小；桩孔开挖可能会改变边坡的破坏模式或薄弱位置，施工中要注意动态把控，做好相应监测；工程实践中，建议桩孔应远离坡脚布设并埋设护筒穿过软弱层，当桩孔在边坡后缘时，孔位与坡顶线宜保持3倍孔径以上距离。

关键词: 桩基施工, 数值模拟, 边坡稳定性, 安全系数

Abstract: The influence of large-diameter slurry-supported bored-pile excavation on slope stability is investigated using a rapid-transit bridge foundation project as a case study. A numerical model is established to analyze the evolution of slope deformation and safety factors during different stages of pile-hole excavation. The results indicate that excavation in the early stages significantly reduces the safety factor of the slope above the pile-top platform, while the impact diminishes in later stages. When the pile hole is located near the rear edge of the slope and maintains sufficient distance from the slope crest, its effect on that slope grade is relatively small. Excavation may alter the failure mode or shift the weak zones of the slope, requiring dynamic control and appropriate monitoring during construction. In engineering practice, pile holes should be positioned away from the slope toe, and casing pipes should be embedded to pass through weak soil layers. When the pile hole is located at the rear edge of the slope, the distance between the hole and the slope crest should be at least three times the pile diameter.

Key words: Pile Installation, Numerical Simulation, Slope Stability, Factor of Safety

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