摘要
通过建立地质环境质量综合评价指标体系，运用灰色聚类方法，对三峡工程库区九座迁建城镇新址的地质环境质量进行了综合对比分析，划分出三个质量等级。地质环境质量等级反映了迁建城址环境组成要素与人类工程活动和社会经济发展的适宜程度。单要素地质体质量、城市综合灾度和自然资源优势度是主要的影响因素。
The Three Gorges project is attracting worldwide attention. The migrating population of the Three Gorges reservoir is about 1.2 million which is rare in the present world. However, the reservoir area of the Three Gorges project lies in a medium low mountains, hills and gorges with complicated geological conditions and limited capacity of geological environment.Various geological hazards happen seriously in this area. As the growth of population and development of local economy, many problems of environmental geology will be worse. Lacking of land resources and water resources, intensifying of landslide and rock collapse, caving and reconstruction of reservoir bank, and karst collapse are the primary problems in construction relocation cities. Based on the practical studies on the transfer and reconstruction of cities and towns in the Three Gorges reservoir area, a comprehensive evaluation indexes system is established, which includes individual geologic body quality, the synthetical disaster of city geological environment, water pollution level, natural resources superiority, the economic loss profit degree of geological environment and the carrying capacity of cities. With the method of cluster analysis, the geological environment quality of nine new city sites is analyzed and compared comprehensively. Three different geological environment grades can be divided among the new city sites. Comparatively, the geological environment quality of new city sites in Zigui and Yunyang is better than that in Fengjie, Badong and Zhongxian. The quality of the new city sites in Wushan, Wanxian, Fengdu and Fuling is the worst. The grades of the geological environment quality reflect the coordination between the city sites environment and the human activity. The synthetical environment quality of the new city sites is affected by many factors, in which individual geologic body quality, the synthetical disaster of city geological environment and natural resources superiority are crucial. During constrction and development of the new cities in the reservoir area, the advantages of environmental conditions should be used fully and the land resources should be used rationally. The monitor net of geological hazards in the reservoir area should be established and strengthened. The loss caused by geological hazards should be minimized. Under the guiding of geological engineering theory, construction of the new cities must act in accordance with the prevention and control of geological hazards. The human activity induced geological hazards must be avoided as far as possible.
出处
《高校地质学报》
CAS
CSCD
1999年第3期290-297,共8页
Geological Journal of China Universities
基金
国家"八五"科技攻关项目
关键词
三峡库区
迁建城镇
地质环境质量
综合评价
reservoir area of the Three Gorge, relocation and construction of city, geological environment quality, comprehensive evaluation
