Geological environmental suitability assessment of power transmission and transformation engineering based on analytic hierarchy process
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摘要: 地质环境适宜性评价是输变电工程规划选址的重要组成部分。针对影响宿豫区输变电工程建设和安全运行的地质环境特点,选取了岩土体承载力、液化指数、发震构造、地震动峰值加速度、地面高程、地形坡度、河流水系及路网密度等8个因素作为评价指标,并利用层次分析方法确定了各因素的权重; 在此基础上,利用GIS的多因素空间拟合功能得到宿豫区输电线路工程适宜性分类图。研究结果表明: 宿豫区除骆马湖水系外基本都属于输变电工程适宜和较适宜区; 受构造断裂影响,郯庐断裂带周边地区的适宜性较差,需要避让。Abstract: The evaluation of geological environment suitability is an important part of the location selection of the power transmission and transformation engineering. According to the characteristics of the geological environment factors affecting the construction and safe operation of the power transmission and transformation engineering in Suyu area, the authors chose 8 factors as evaluation indicators, including bearing capacity, liquefaction index, seismic structure, ground motion peak acceleration, ground elevation, terrain slope, river system and road network density, and the weight of each factor is determined by the method of analytic hierarchy process (AHP). On this basis, the suitability classification map of the transmission line project in the Suyu area is obtained, using the multi-factor spatial fitting function of GIS. The results show that the Suyu area is basically belonging to suitable and relatively suitable zones for power transmission and transformation engineering, except for Luoma Lake system. While the areas around Tan-Lu fault zone belong to poor suitable zones, affecting by the fracturing structure, which needed to be avoided.
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