GIS技术在大芒金矿废弃地选址中的应用

P. Baffoe
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引用次数: 13

摘要

矿山废物堆放场的最佳选址是露天矿山作业中的一个重要问题。为了避免潜在的损失,必须同时考虑诸如财务、环境和安全要求等许多因素。本研究使用ModelBuilder工具和几个GIS空间分析工具来选择合适的矿山废物倾倒场地。采用加权叠加技术,首先确定必要的准则和约束条件,然后为每个准则开发属性。所使用的标准分为适合和不适合的二元类别。各指标叠加加权后,确定适宜面积为17.01 km2,不适宜面积为66.10 km2。在适宜区域中,优选面积为13.62 km2,共21个站点。应用进一步的约束条件,21个最优站点中有2个被确定为最佳站点。利用ModelBuilder建立了一个阶梯式模型,利用合适的约束条件和标准选择经济有效的矿山废弃物倾倒场地。这有助于根据各种数据集制作适宜性地图,用于选择矿山废料倾倒场的地点。决策者可以使用最符合标准和限制条件的最终产出图来确定适合在矿山特许权上设置矿山废料倾倒场的地区。由于目前尚无标准模型,因此该模型可作为矿山排土场选址的标准模型。关键词:ModelBuilder, GIS,约束,垃圾场,加权叠加
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Selecting Suitable Sites for Mine Waste Dumps Using GIS Techniques at Goldfields, Damang Mine
The selection of optimal sites for mine waste dumps is a significant problem associated with surface mines operations. A number of factors such as financial, environmental and safety requirements must be simultaneously considered to avoid potential losses. This research used the ModelBuilder tool and several GIS spatial analyst tools to select suitable sites for mine waste dump. The weighted overlay technique was adopted by first determining the necessary criteria and constraints and subsequently developing attributes for each criterion. The criteria used were grouped into a binary category of suitable and unsuitable. A total area of 17.01 km 2 was determined as suitable, while 66.10 km 2 was classified as unsuitable after overlaying and weighting all the criteria. Out of the suitable areas, an area of 13.62 km 2 consisting of 21 sites were determined as optimal. Applying further constraints, 2 out of the 21 optimal sites were determined as the best sites. A step-wise model has been developed using ModelBuilder for selecting an economic but effective site for dumping mine waste using suitable constraints and criteria. This has facilitated the production of suitability maps generated from the various datasets being used for mine waste dump site selection. The final output map that best fits the criteria and constraints can be used by decision makers to set out the areas suitable for mine waste dump sites on the mine concession. The model could be applied as the standard model for selecting sites for mine waste dumps, since there is no standard model available at the moment. Keywords : ModelBuilder, GIS, Constraints, Waste Dumps, Weighted Overlay
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