兰州大学学报(自然科学版)
蘭州大學學報(自然科學版)
란주대학학보(자연과학판)
JOURNAL OF LANZHOU UNIVERSITY(NATURAL SCIENCES)
2014年
3期
356-362
,共7页
齐识%刘东飞%马金珠%田黎明
齊識%劉東飛%馬金珠%田黎明
제식%류동비%마금주%전려명
典型滑坡%熵权%专家权重%综合权重%危险度评价
典型滑坡%熵權%專傢權重%綜閤權重%危險度評價
전형활파%적권%전가권중%종합권중%위험도평개
typical landslide%entropy weight%expert weight%comprehensive weight%hazard degree assessment
根据典型滑坡的强度指标和可能性指标选取相对高差、坡度、坡体结构、坡型、地层岩性、地层关系、滑坡体积和块石含量等8个评价因子,利用信息熵法、层次分析法与综合权重法分别计算出各评价因子的权重,并对白龙江流域21个典型滑坡进行危险度区划,将3种权重值计算的危险度分级结果进行比较。结果表明:专家权重和信息熵权重危险度分级结果一致率为76%,信息熵权重和综合权重危险度分级结果一致率为86%,专家权重和综合权重危险度分级结果一致率为90%,因此,综合权重得到的危险度分级较其他两种方法更为准确可靠。
根據典型滑坡的彊度指標和可能性指標選取相對高差、坡度、坡體結構、坡型、地層巖性、地層關繫、滑坡體積和塊石含量等8箇評價因子,利用信息熵法、層次分析法與綜閤權重法分彆計算齣各評價因子的權重,併對白龍江流域21箇典型滑坡進行危險度區劃,將3種權重值計算的危險度分級結果進行比較。結果錶明:專傢權重和信息熵權重危險度分級結果一緻率為76%,信息熵權重和綜閤權重危險度分級結果一緻率為86%,專傢權重和綜閤權重危險度分級結果一緻率為90%,因此,綜閤權重得到的危險度分級較其他兩種方法更為準確可靠。
근거전형활파적강도지표화가능성지표선취상대고차、파도、파체결구、파형、지층암성、지층관계、활파체적화괴석함량등8개평개인자,이용신식적법、층차분석법여종합권중법분별계산출각평개인자적권중,병대백룡강류역21개전형활파진행위험도구화,장3충권중치계산적위험도분급결과진행비교。결과표명:전가권중화신식적권중위험도분급결과일치솔위76%,신식적권중화종합권중위험도분급결과일치솔위86%,전가권중화종합권중위험도분급결과일치솔위90%,인차,종합권중득도적위험도분급교기타량충방법경위준학가고。
From a typical landslide’s intensity indexes and potential indexes were selected the following eight factors: the relative elevation, slope, slope structure, slope type, stratum lithology, stratigraphic relationships, landslide volume and stone contents; then the eight factors were evaluated and the information entropy weight and expert weight of the eight factors were worked out by using AHP and the entropy principle. At the same time, the information entropy weight and expert weight were accorded the same status so as to facilitate their participation in the comprehensive weight calculation. Then a hazard degree assessment was made of 21 typical landslides that had occurred in the Bailong River Basin by calculating the three aspects including the expert weight, entropy weight and comprehensive weight. A comparision of the results showed that the concordance rate of the risk classification of expert weight and information entropy weight reached 76%, the that of the risk classification of information entropy weight and the comprehensive weight reached 86%, and that of the risk classification of expert weight and the comprehensive weight reached 90%. Therefore, the risk classification result of the comprehensive weight was more accurate and reliable than the others.