长江中游岸线资源与开发利用适宜性评价分析

长江中游岸线资源丰富,开发利用价值较大。通过充分分析长江中游岸线资源特征与地质环境条件,从地质学角度构建港口码头、过江隧道与过江大桥等重大工程建设适宜性评价模型,运用层次分析法(AHP)划定出三种工程类型一级岸线(适宜)、二级岸线(较适宜)、三级岸线(一般适宜)与四级岸线(非优先开发)区域范围。由结果可知:长江中游岸线港口码头以非优先开发区域为主,长度合计931.47 km,占岸线总长的46.71%;过江隧道与过江大桥以较适宜开发、一般适宜开发区域为主,较适宜开发、一般适宜开发区长度合计分别为1550.75 km、1224.18 km,占岸线总长的77.77%、61.39%。最后,针对三种工程类型适宜性等级特征提出相应地学对策建议,为重大工程部署规划提供地学理论依据,促进长江中游岸线资源科学合理开发利用与有效保护,以期推动长江经济带发展与国土空间规划,保护大长江持续健康发展。

Evaluation and analysis on suitability of development and utilization of the bank line resources in the middle reaches of Yangtze River

Waterfront resources in the middle reaches of the Yangtze River are abundant, with quite high value of development and utilization. This paper establishes, based on sufficient analysis on characteristics of waterfront resources and geological environmental conditions in the middle reaches of the Yangtze River, the evaluation model for construction appropriateness of major projects such as port and wharf, river-crossing bridge and river-crossing tunnel etc. in the perspective of geology; classifies various project types into four levels i.e. appropriate for development, relatively appropriate for development, generally appropriate for development, and non-priority development by analytic hierarchy process (AHP) and conducts zoning evaluation. According to the results, the port terminal in the middle reaches of the Yangtze River is dominated by non-priority development areas, with a length of 931.47 km, accounting for 46.71% of the total length of the coastline; cross-river tunnels and cross-river bridges are mainly suitable for development and generally suitable for development areas, with the lengths being 1550.75 km and 1224.18 km, respectively, or 77.77% and 61.39% of the total length of the coastline. Finally, we put forward suggestions and rectification measures according to characteristics of each project level, so as to privide a theoretical basis for construction and deployment of major projects in terms of geology, promote the scientifically reasonable development and utilization as well as the effective protection of waterfront resources in the middle reaches of the Yangtze River, and further facilitate the development of Yangtze River Economic Zone and national spatial planning, and protect the sustainable and sound development of Yangtze River.