基于监测数据和参数反演的滑坡动态设计与施工
发布时间：2019-01-26 11:38
【摘要】：基于监测数据和参数反演的数值模拟是动态设计与施工的基本方法。本文以丹巴黄土坎滑坡为工程依托,基于钻探、槽探等现场及室内试验手段获得滑坡区域地质构造、地层岩性、岩土参数等相关数据,然后结合对监测数据的分析判断及现场施工的实际情况,详细论述了动态设计与施工在本次滑坡治理的相关问题。在对滑坡整治设计和进行稳定评价时,通常选用参数指标是滑带土的c、φ值。目前主要采用现场或室内试验与数值参数反演的方法综合确定,本文以点安全系数理论为基础,以滑坡典型剖面建立模型,采用基于有限差分法的数值分析软件FLAC3D参数反演得出符合滑坡实际现状的滑带土强度参数。根据滑坡监测设计方案和规范的规定,在滑坡各区布置了表面位移、钢筋应力、锚索应力等监测点,通过数据处理分析滑坡各区的变形及支护结构受力是否在许可范围内,从而为施工预警,保障安全。最后,本文基于前述的监测数据及相应剖面的数值模拟,详细论述了动态设计与施工的理论思想在丹巴黄土坎滑坡治理中的应用方法。结合治理的过程,对本次治理效果进行评价并提出滑坡治理的相关建议,为类似项目提供参考。
[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.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P642.22;TU753.8
本文编号：2415440
[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.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P642.22;TU753.8
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