摘要
针对重庆市江津区四面山国家级风景区的滑坡、危岩崩塌,选择灾害体、地表坡度、森林植被、水文地质、岩性、地表高程、库水位和地质构造等8个地质灾害的影响因子;在MAPGIS技术支持下,采用综合指数评价模型,通过层次分析法(APH法)及灰色聚类法获取每个因子的平均值;将各影响因子的权重进行空间叠加,据此结合综合评估指数将四面山国家级风景名胜区的地质灾害危险性分为三级区,即:高易发区,中易发区和低易发区,每区所占面积分别为96.66km2,113.37km2,23.96km2,其结果符合实际情况。
As JiangJin Simian Mountain National Park is surrounded by landslides and perilous rock, we selected eight risk factors i.e. disasters, surface slope, vegetation, hydrogeological conditions, rock property, altitude, reservoir water level and geological structure. Based on MAPGIS technology, the study used a composite index model, each factor calculated through the grey assemble theory and the Analytical Hierarchy Process （AHP）, according to their weight. The factors were used for spacial algebraic addition. Geological hazards easy-happening areas can be divided into high-risk area, medium-risk area, low-risk area, covering 96.66km^2, 113.37km^2, 23.96km^2, respectively. The zoning was consistent with the practical situation.
出处
《中国地质灾害与防治学报》
CSCD
2009年第3期76-80,共5页
The Chinese Journal of Geological Hazard and Control
基金
国家自然科学基金(50678182)
重庆市重点自然科学基金(2008BA0015)
