广西崩塌地质灾害的空间分布特征及驱动因子研究被引量：1

Spatial Distribution Characteristics and Driving Factors of Collapse Geological Hazard in Guangxi

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摘要笔者基于2015年广西地质灾害信息管理系统中的崩塌地质灾害点数据,运用空间聚类分析方法揭示了广西崩塌地质灾害的空间分布特征;在此基础上,选取高程、坡度、坡向、地形起伏度、降水、岩性、断裂构造和人类工程活动8个因子作为广西崩塌地质灾害的驱动因子,采用地理探测器模型对广西崩塌地质灾害空间分异性进行定量归因。研究结果表明:(1)广西崩塌地质灾害存在多个聚集区,主要集中在桂东南、桂西、桂西北以及桂东北地区;(2)岩性对广西崩塌地质灾害空间分异性的影响力最强,高程、地形起伏度、降水、坡度、断裂构造和人类工程活动等也具有一定的影响力;(3)双因子交互对崩塌地质灾害空间分异性的影响效果均表现为非线性增强,其中岩性∩降水的影响力最大(q=0.0994)。该研究结果可为广西崩塌地质灾害的防治提供参考。 Based on the data of collapse geological disaster points in Guangxi geological disaster information management system in 2015 the spatial distribution characteristics of collapse geological disasters in Guangxi were revealed by using spatial clustering analysis method.On this basis eight factors of elevation slope aspect terrain fluctuation precipitation lithology fault structure and human engineering activities were selected as the driving factors of collapse geological disasters in Guangxi and the geographical detector model was used to quantitatively attribute the spatial stratified heterogeneity of collapse geological disasters in Guangxi.The results show that (1) There are many accumulation areas of collapse geological disasters in Guangxi mainly concentrated in the southeast west northwest and northeast of Guangxi (2) Lithology has the strongest influence on the spatial stratified heterogeneity of collapse geological disasters in Guangxi and elevation terrain fluctuation precipitation slope fault structure and human engineering activities also have certain influence (3) The effect of two-factor interaction on the spatial stratified heterogeneity of collapse geological disasters is nonlinearly enhanced among which lithology∩precipitation has the greatest influence q=0.0994.The research results can provide reference for the prevention and control of collapse geological disasters in Guangxi.

作者周金范秋雁朱真 ZHOU Jin;FAN Qiuyan;ZHU Zhen(School of Resources Environment and Materials Guangxi University,Nanning 530004 China;Guangxi Zhuang Autonomous Region Geological Environment Monitoring Station,Nanning 530028 China)

机构地区广西大学资源环境与材料学院广西壮族自治区地质环境监测站

出处《红水河》 2023年第4期96-100,共5页 Hongshui River

关键词崩塌地质灾害驱动因子空间分异性空间聚类分析地理探测器广西 collapse geological hazard driving factors spatial stratified heterogeneity spatial cluster analysis geographical detector Guangxi

分类号 P694 [天文地球—地质学]

作者简介第一作者:周金(1994),男,广西北流人,硕士研究生,研究方向为地质灾害防治与岩土工程。E-mail:2646533349@qq.com。