鲁南经济带地质环境脆弱性评价

Geological Environment Vulnerability Evaluation of the Economic Zone in South Shandong

鲁南经济带内矿产资源及地下水资源非常丰富,长期大量开采引发的环境地质问题主要有采空塌陷、岩溶塌陷、地面沉降、地下水降落漏斗及海水入侵等。选取地形地貌、岩土体特征、水文地质条件、环境工程地质问题、地质资源和人类工程经济活动等17个评价因子,利用傅勒三角形法确定各评价因子的权重,采用专家聚类法评价地质环境脆弱性。选取重点城市所在评价单元的土壤环境质量(T)、工程地质环境(G)、地质灾害危险性(Z)和地质环境承载力(C)等4个评价因子,采用栅格叠图法对重点城市适宜性进行了评价。评价结果显示,全区可划分为地质环境脆弱性极高区、高区、中等区和低区共4个区,菏泽市、临沂市处于地质环境脆弱性高区,济宁市、枣庄市及日照市位于地质环境脆弱性中等区。地质环境适宜性综合评价显示5个重点城市均为基本适宜,其中枣庄市西城区为适宜。

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 engi-neering 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）,geolog-ical 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 in-dicates that the five key cities all have basic suitable environment,and the west district of Zaozhuang city has suitable environment.