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楊智強，魏中凱，李銳鵬

（ 河南省地質礦產勘查開發局第四地質勘查院 ，河南 鄭州 450000)

摘 要：為有效評價不同孕災因子對地質災害發育的敏感性及易發性， 以澠池縣為實例背景，開展了地質災害孕災條件分析，通過確定系數法、信息量模型分別評價孕災因子對地質災害的敏感性及易發性。結果表明： 縣域內的孕災因子相對較多，主要包括地貌因子、高程因子、坡度因子、地質構造因子及地層巖性因子；在敏感性分析方面，5 類孕災因子的敏感性存在較大差異，敏感性由高向低順序為：高程因子＞坡度因子＞地質構造因子＞地貌因子＞地層巖性因子；在易發性分析方面，高易發區的分布面積比例為17.66%, 中易發區的分布 面積比例為30.53% , 低易發區的分布面積比例為28.52%, 非易發區的分布面積比例為23.29% 。通過研究， 可為該縣災害防治提供堅實的理論基礎。

關鍵詞：孕災因子；確定系數法；信息量模型；敏感性；易發性

中圖分類號：P642 

文獻標志碼：A 

文章編號：1005- 8249 (2024) 03- 0086- 06 

DOI：10.19860/j.cnki.issn1005-8249.2024.03.017

YANG Zhiqiang , WEI Zhongkai , LI Ruipeng

(The Fourth Geological Exploration Institute of Henan Geology and Mineral Bureau , Zhengzhou 450000 , China) 

Abstract : In order to effectively evaluate the sensitivity and susceptibility of different disaster factors to geological disaster development , Mianchi County was taken as an example background to conduct an analysis of its geological disaster pregnant conditions. The sensitivity and susceptibility of geological disaster pregnant factors to disasters were evaluated using the coefficient determination method and information quantity model , respectively. The analysis results show that Mianchi County has relatively many disaster inducing factors , mainly including geomorphic factors , elevation factors , slope factors , tectonics factors and formation lithology factors; In terms of sensitivity analysis , there are great differences in the sensitivity of the five types of hazard factors. The sensitivity order is : elevation factor > slope factor > tectonics factor > geomorphic factor > formation lithology factor; In terms of susceptibility analysis , the distribution area proportion of high susceptibility areas is 17.66% , the distribution area proportion of medium susceptibility areas is 30.53% , the distribution area proportion of low susceptibility areas is 28.52% , and the distribution area proportion of non susceptibility areas is 23.29% . Through the study , a solid theoretical foundation can be provided for disaster prevention and control in Mianchi County.

Keywords : geological hazards; determination of coefficient method; information quantity model; sensitivity; susceptibility

作者簡介： 楊智強 (1987—) , 男，本科， 工程師，研究方向 ：地質（ 水工環地質）。

收稿日期：2023-05-11