Geographical information system-based computational implementation and application of spatial three-dimensional slope stability analysis
Geographical information system-based computational implementation and application of spatial three-dimensional slope stability analysis
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DOI：
10.1016/j.compgeo.2006.07.003
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发表时间：
2006-06
影响因子：
5.3
通讯作者：
M. Xie;T. Esaki;C. Qiu;Chunxiang Wang
中科院分区：
文献类型：
--
作者：
M. Xie;T. Esaki;C. Qiu;Chunxiang Wang
边坡稳定性的三维评价是岩土工程领域的一个重要课题。地理信息系统（GIS）方法的日益普及，其能力范围从传统的数据存储到复杂的空间分析和图形表示，这意味着它也正在成为岩土工程师的强大工具。在这项研究中，我们结合联合收割机GIS网格数据与四个建议的基于柱的三维边坡稳定性分析模型，我们设计了相应的基于GIS网格的三维确定性模型来计算边坡的安全系数。基于四个基于GIS的三维边坡稳定性分析模型，一个基于GIS的程序，3DSlopeGIS，已开发实现的算法，其中所有的输入数据是在相同的格式作为GIS数据集。3DSlopeGIS系统是目前广泛使用的GIS软件包的扩展，代表了三维边坡稳定性分析和基于GIS的组件对象模型（COM）技术的结合开发。由于所有相关数据都是以GIS格式提供的，这种新的数据库方法将便于数据的重复更新和查阅。在本文中，某些广泛解决的例子进行了评估，结果表明，这种基于GIS的工具作为一种手段，评估边坡的三维稳定性的校正和潜力。使用3DSlopeGIS系统评估了两个实际的斜坡问题。计算结果表明，该方法不仅便于数据管理，而且可以有效地选择蒙特-卡罗随机变量的取值范围，并确定了火山岩穹丘局部的临界滑动面位置。
Three-dimensional (3D) evaluation of slope stability is a widely addressed problem in the domain of geotechnical engineering. The growing popularity of the geographical information system (GIS) approach, with capacities ranging from conventional data storage to complex spatial analysis and graphical presentation, means that it is also becoming a powerful tool for geotechnical engineers. In this study, in which we combine GIS grid-based data with four proposed column-based models of 3D slope stability analysis, we have devised new correspondent GIS grid-based 3D deterministic models to calculate the safety factor of the slope. Based on the four GIS-based 3D slope stability analysis models, a GIS-based program, 3DSlopeGIS, has been developed to implement the algorithm where all the input data are in the same format as the GIS dataset. The 3DSlopeGIS system, which is an extension of the widely used GIS software package, represents the combined development of 3D slope stability analysis and GIS-based component object model (COM) skills. Since all related data are supplied in the GIS format, this new database approach will be convenient for the repeated renewal and consulting of data. Certain widely addressed examples are evaluated in this paper and the results show the correction and potential of this GIS-based tool as a means of assessing the 3D stability of a slope. Two practical slope problems have been evaluated using the 3DSlopeGIS system. The results illustrate the convenience of data management as well as the effective range selection of Monte-Carlo random variables and the critical slip surface location in some parts of a lava dome.