發(fā)布時間：2019-01-26 11:38

【摘要】：基于監(jiān)測數據和參數反演的數值模擬是動態(tài)設計與施工的基本方法。本文以丹巴黃土坎滑坡為工程依托,基于鉆探、槽探等現場及室內試驗手段獲得滑坡區(qū)域地質構造、地層巖性、巖土參數等相關數據,然后結合對監(jiān)測數據的分析判斷及現場施工的實際情況,詳細論述了動態(tài)設計與施工在本次滑坡治理的相關問題。在對滑坡整治設計和進行穩(wěn)定評價時,通常選用參數指標是滑帶土的c、φ值。目前主要采用現場或室內試驗與數值參數反演的方法綜合確定,本文以點安全系數理論為基礎,以滑坡典型剖面建立模型,采用基于有限差分法的數值分析軟件FLAC3D參數反演得出符合滑坡實際現狀的滑帶土強度參數。根據滑坡監(jiān)測設計方案和規(guī)范的規(guī)定,在滑坡各區(qū)布置了表面位移、鋼筋應力、錨索應力等監(jiān)測點,通過數據處理分析滑坡各區(qū)的變形及支護結構受力是否在許可范圍內,從而為施工預警,保障安全。最后,本文基于前述的監(jiān)測數據及相應剖面的數值模擬,詳細論述了動態(tài)設計與施工的理論思想在丹巴黃土坎滑坡治理中的應用方法。結合治理的過程,對本次治理效果進行評價并提出滑坡治理的相關建議,為類似項目提供參考。
[Abstract]:Numerical simulation based on monitoring data and parameter inversion is the basic method of dynamic design and construction. In this paper, based on the field and laboratory test methods such as drilling and grooving, the related data such as regional geological structure, stratigraphic lithology and geotechnical parameters of the landslide are obtained based on the engineering support of the Danba loess landslide. Combined with the analysis and judgment of monitoring data and the actual situation of site construction, the related problems of dynamic design and construction in this landslide treatment are discussed in detail. In the design and stability evaluation of landslide regulation, the parameter index is usually chosen as the c, 蠁 value of the sliding zone soil. At present, the methods of field or laboratory test and numerical parameter inversion are mainly used to determine comprehensively. Based on the point safety factor theory and the typical section of landslide, the model is established in this paper. Based on the finite difference method, the strength parameters of the sliding zone soil are obtained by using the numerical analysis software FLAC3D parameter inversion, which accords with the actual situation of the landslide. According to the regulations of landslide monitoring design scheme and code, monitoring points such as surface displacement, reinforcement stress and anchor cable stress are arranged in landslide areas. The deformation of landslide areas and the force of supporting structure are analyzed by data processing. Thus for the construction warning, to ensure safety. Finally, based on the above-mentioned monitoring data and the numerical simulation of the corresponding sections, the application of the theory of dynamic design and construction to the control of Huangtukan landslide in Danba is discussed in detail. Combined with the process of governance, the effect of this governance is evaluated and the relevant suggestions of landslide treatment are put forward to provide reference for similar projects.
【學位授予單位】：西南交通大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P642.22;TU753.8

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本文編號：2415440