土质滑坡风险综合评价——以张掖市为例  

Comprehensive risk assessment of soil landslides:Taking Zhangye City as an example

作　　者：周硕 ZHOU Shuo(Hubei Bureau of Coal Geology,Wuhan 430070,Hubei,China)

机构地区：[1]湖北煤炭地质局,湖北武汉430070

出　　处：《矿产勘查》2024年第S2期254-259,共6页Mineral Exploration

摘　　要：本文以甘肃张掖市土质滑坡为依托,从易发性、危险性、易损性3个方面,构建评价指标体系和评价模型,对土质滑坡风险进行综合评价。结果显示,低风险土质滑坡的滑坡体体积较小,通常发生于地形平坦区域,一般不会对经济、人口、物质造成影响;中风险土质滑坡的滑坡体体积适中,通常发生于缓坡或山丘上,一定程度上会对经济、人口、物质造成影响;高风险土质滑坡的滑坡体体积较大,通常发生于陡峭山坡或深谷中,且对经济、人口、物质具有严重影响。该结果与张掖市历史土质滑坡风险等级划分情况一致,具有正确性、有效性和可靠性。Based on the soil landslide in Zhangye City,Gansu Province,this paper constructs the evaluation index system and evaluation model from the three aspects of susceptibility,risk and vulnerability,and makes a comprehensive evaluation of soil landslide risk.The results show that low-risk soil landslides have small volumes,usually occurs in flat terrain areas,which generally have no impact on the economy,population,or material resources;Medium risk soil landslides have moderate volumes,usually occurs on gentle slopes or hills,which will have an impact on the economy,population,and material resources to some extent;High risk soil landslides have large volumes,usually occurs in steep slopes or deep valleys,and have serious impacts on the economy,population,and material resources.

关 键 词：土质滑坡 综合风险 易发性 危险性 易损性 

分 类 号：P642.22[天文地球—工程地质学]