摘要
我国1/3以上的国土面积有可溶岩分布,尤其是我国南方各地经常发生岩溶塌陷,且塌陷的数量多、规模大,严重影响国民经济建设;目前,用于岩溶塌陷危险性评价的方法很多,但普适性有限。在大量实地调研资料的基础上,选取15个因素并分成4个类别,运用层次分析法确定评价因子权重,以模糊数学理论为基础建立岩溶塌陷危险性评价两级综合评判模型,以岭形分布函数作为定量影响因素的隶属函数,并给出了确定岭形隶属函数的定量表达式;以某重大工程岩溶地基作为算例,评价结果与经验公式法评判结果吻合较好,表明评价结果真实可靠,可为工程设计、施工提供一定依据。
The distribution of carbonatite is over a third of China＇s land area,especially in southern China occurs large-number and large-scale karst collapse frequently,which seriously affects the national economic construction. Currently,there are a lot of methods used for risk evaluation of karst collapse,but the universal applicability is limited. This article selected 15 factors and divided them into four categories,and then used AHP to determine weights of the evaluation factors. The two-stage comprehensive evaluation model of karst collapse was establish based on fuzzy mathematics theory,and ridge-shaped distribution function was used as the membership function of a quantitative factors affecting. Additionally,a quantitative expression used to determine the membership function is given. Finally,the karst foundation of a major project was used as an example,and the evaluation result was in good agreement with that given by empirical formula,which indicates the result is reliable,and can provide some basis for engineering design and construction.
出处
《中国地质灾害与防治学报》
CSCD
2015年第1期43-48,共6页
The Chinese Journal of Geological Hazard and Control
基金
西南地区重大地质灾害调查与预警区划(12120113010100)
关键词
模糊综合评判
岩溶塌陷
层次分析法
隶属函数
危险性评价
fuzzy comprehensive evaluation
karst collapse
Analytic Hierarchy Process（AHP）
membership function
risk evaluation
