超高路堑边坡治理工程案例研究Ⅱ:治理对策及其过程控制

发布时间：2018-04-03 22:24

本文选题：边坡工程　切入点：高边坡　出处：《岩石力学与工程学报》2017年05期

【摘要】：概述了K227滑坡治理工程方案,对该滑坡分"上、中、下"三段进行施工的全过程开展数值模拟与优化分析,并与监测反馈信息相互印证,指导了边坡施工的过程控制,达到了超高路堑边坡治理"一次规划、分步推进、安全实施、不留后患"的工程控制目标,并得到以下结论:(1)将综合工况下边坡整体稳定系数F_s=1.10作为施工过程稳态控制的标准,以实现超高路堑边坡稳态控制,保证施工安全及其支护结构的耐久性;(2)坡脚反压是超高路堑边坡施工过程中确保其具备临时稳定的必要条件,应谨慎选择对此类临时安全措施调整的时机和节奏;(3)双排锚索抗滑桩方案的预先规划和及时生效,对于控制施工期间后山牵引变形发展和边坡稳定条件弱化,保证施工过程安全及成功治理具有重要的作用;(4)超高路堑边坡治理过程中存在多种潜在失稳机制,以及局部和整体变形相互转化的问题,需要进行多方案模拟优化,实现局部和整体变形的协调控制;(5)路堑高边坡动态设计与信息化施工需要由边坡变形破坏驱动设计调整的被动模式,转化为模拟及预测边坡变形发展规律,实现施工次生病害的主动控制。
[Abstract]:Overview of the project K227 of the landslide, landslide ", and" three section of numerical simulation and optimization analysis of the whole process in construction, and corroborated the monitoring and feedback information, guide the process of construction of slope control, reached a high cutting slope governance "a plan, step by step. The implementation of security control, the target leaving troubles" project, and get the following conclusions: (1) the comprehensive slope overall stability coefficient F_s=1.10 as the construction process of steady state control standards, to achieve ultra high slope steady control, ensure the construction safety and supporting structure durability; (2) the slope of back pressure is a necessary condition to ensure the temporary stability of high cutting slope in the construction process, should be careful to choose the timing and pace of adjustment of such temporary security measures; (3) double row anti slide pile with anchor cable scheme for pre planning and timely effective control During the construction of the mountain for traction and stability of slope deformation development conditions weakening, to ensure construction safety and successful governance plays an important role; (4) a variety of potential instability mechanism of high cutting slope in the process of governance, transformation and partial and overall deformation problem, need to simulate the optimization scheme, implementation of local and global the deformation of the coordinated control; (5) failure of passive mode driven design adjustment by slope deformation need high slope dynamic design and information construction, into the simulation and prediction of slope deformation, active control to realize the construction of secondary disease.

【作者单位】：福州大学环境与资源学院;地质工程福建省高校工程研究中心;中国公路工程咨询集团有限公司中咨华科交通建设技术有限公司;
【基金】：国家自然科学基金资助项目(41002127) 交通运输部建设科技项目(201331849A130) 福建省交通运输科技项目(201242)~~
【分类号】：P642.22;U418.5

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