Abstract:

The mineral and groundwater resources are very rich in the economic region of south Shandong. The geological environment problems caused by continuously pumping large quantity of groundwater include mine-dout area breakdown, karst collapse, land subsidence, cone of depression and saltwater intrusion. With 17 eva-luation factors, such as landform, rock-soil body characteristics, hydrogeological condition, environmental engineering geology problems, geological resource and ergonomic activity, etc., this paper used Fuller triangle to define the factor weight and evaluate the geological environment vulnerability with experts clustering procedure. Four evaluation factors, i.e. soil environmental quality (T), engineering geology environment (G), geological hazard dangerous assessment (Z) and geological environment load capacity (C) were utilized to evaluate the suitability of the key cities in the study area with map overlapping method. The result shows that the whole region can be divided into four grade vulnerability sections, which are the serious vulnerability section, the high vulnerability section, the medium vulnerability section and the low vulnerability section; Heze city and Linyi city are located at the high vulnerability section; Jining city, Zaozhuang city and Rizhao city are located at the medium vulnerability section. The comprehensive assessment of the geological environment of the study area indicates that the five key cities all have basic suitable environment, and the west district of Zaozhuang city has suitable environment.

Key words: geological environment, vulnerability, city suitability, economic zone in south Shandong