利用基于GIS(Geographic Information System,地理信息系统)栅格数据的三维极限平衡分析模型,可以充分考虑边坡的三维复杂空间特性。经过数据的获得、数据的处理、模型的建立和稳定性分析,不但给出了边坡的三维安全系数,而且给出了危险...利用基于GIS(Geographic Information System,地理信息系统)栅格数据的三维极限平衡分析模型,可以充分考虑边坡的三维复杂空间特性。经过数据的获得、数据的处理、模型的建立和稳定性分析,不但给出了边坡的三维安全系数,而且给出了危险滑动面上的滑动力分布矢量图。结果表明,滑动面上力的分布极不均匀,呈现明显的复杂空间特性。展开更多
Combining the GIS （geographic information systems） grid-based data with four proposed column-based 3D slope stability analysis models, a comprehensive solution of a high-steep open-pit slope has been obtained. For s...Combining the GIS （geographic information systems） grid-based data with four proposed column-based 3D slope stability analysis models, a comprehensive solution of a high-steep open-pit slope has been obtained. For six searching ranges, 19 critical slip surfaces of different sizes have been studied, in which the minimum 3D safety factor is 1.33. Comparison of 3D safety factors of designed and proposed slope plans shows for all the critical slip surfaces for the proposed plan, the smallest 3D safety factor is 1.33 under the most unfavorable condition. This means that the proposed plan of the high slopes, about 600 m, of an open pit （2-5° steeper than designed plan） is feasible.展开更多
文摘利用基于GIS(Geographic Information System,地理信息系统)栅格数据的三维极限平衡分析模型,可以充分考虑边坡的三维复杂空间特性。经过数据的获得、数据的处理、模型的建立和稳定性分析,不但给出了边坡的三维安全系数,而且给出了危险滑动面上的滑动力分布矢量图。结果表明,滑动面上力的分布极不均匀,呈现明显的复杂空间特性。
基金This work was financially supported by the National Natural Science Foundation of China (No. 2004BA615A-05).
文摘Combining the GIS （geographic information systems） grid-based data with four proposed column-based 3D slope stability analysis models, a comprehensive solution of a high-steep open-pit slope has been obtained. For six searching ranges, 19 critical slip surfaces of different sizes have been studied, in which the minimum 3D safety factor is 1.33. Comparison of 3D safety factors of designed and proposed slope plans shows for all the critical slip surfaces for the proposed plan, the smallest 3D safety factor is 1.33 under the most unfavorable condition. This means that the proposed plan of the high slopes, about 600 m, of an open pit （2-5° steeper than designed plan） is feasible.
