Geomatics Comprehensive Evaluation Index Model for Pipeline Route Optimisation

Oil and gas pipeline routing criteria, sub-criteria, parameters and the routine alternatives were reviewed from literature and later structured using the concept of Multi-Criteria Decision Analysis (MCDA) based on Analytical Network Process (ANP) that offer a feedback mechanism model of these factors to obtain their various weights for prioritization, through questionnaire administration. Moreover, the land use land cover for the study areas were sourced through the acquisition of LANDSAT 8 imageries, thereafter processed, and classified. Other spatial data were sourced and bathymetry information were further modelled in ArcMap 10.2 environment in order to obtain an optimum route for the study areas. The spatial analysis thereafter was carried out to validate the model for the optimal route that out-performed the original design route and three other alternative routes.

本研究首先从文献中梳理油气管道选线的准则、子准则、参数及常规备选方案，随后基于分析网络过程（Analytical Network Process, ANP）的多准则决策分析（Multi-Criteria Decision Analysis, MCDA）框架完成结构化构建：该框架可搭建各影响因素的反馈机制模型，通过问卷调查获取各因素的权重以开展优先级排序。此外，研究区域的土地利用/土地覆盖数据通过采集LANDSAT 8影像获得，随后进行处理与分类。其余空间数据均完成采集，并在ArcMap 10.2环境中对水深信息进行建模，以得到研究区域的最优选线方案。后续通过空间分析对该最优路线模型进行验证，结果显示该最优路线优于原始设计路线及另外三条备选路线。