地质通报2026，Vol.45Issue(4)：620-633,14.DOI:10.12097/gbc.2024.10.027
黄土地区山区城镇地质灾害精细化风险"点面双控"体系
Geological disaster refined risk"double-control of point and zone"system in mountainous towns of loess regions
摘要
Abstract
[Objective]The geological disasters in mountainous towns of loess areas have the characteristics of many geological disaster points and wide areas.The current disaster management mode is mainly based on the traditional hazard point control,but most of the geological disasters in recent years are outside the scope of control.Therefore,the existing risk management and control system need to be innovated and improved.[Methods]In response to the complexity of loess geological disaster risk management,an exploratory methodology has been devised for a geological disaster refined risk"double-control of point and zone"system applicable to mountain towns in loess regions.Firstly,for the"point control"link,the stability,hazard and risk assessment of geological disaster hazard points are carried out on the basis of field investigation.Secondly,for the"zone control"link,geological background factors and geological disaster triggering factors suitable for loess regions are selected based on slope units,and statistical models such as information method are used to evaluate the susceptibility and hazard of geological disaster,and the risk level of slope unit is evaluated considering the vulnerability of disaster bearing body.Finally,a geological disaster risk"double-control of point and zone"map is formed based on the administrative village unit,and an eight-level rainfall warning division method is proposed for loess regions,along with corresponding defense and response measures.[Results]Taking the main urban area of Mizhi County in Yulin City,Shaanxi Province as a case study,a double control management system for"hazard points and risk areas"of geological disaster has been established.The study findings show that the area is divided into 57 administrative village units,with 1 extremely high risk hazard points,14 high risk hazard points,1 medium risk hazard point,5 low risk hazard points,29 extremely high risk slopes(accounting for 0.45%of the area),111 high risk slopes(accounting for 2.19%of the area),804 medium risk slopes(accounting for 19.35%of the area),and 3596 low risk slopes(accounting for 78.01%of the area).Based on this,a corresponding geological disaster risk"double-control of point and zone"map is drawn,providing scientific basis for local governments to prevent and reduce disasters.[Conclusions]This study provides a new insight for geological disaster risk management in loess regions,but it is still at an exploratory stage.In the future,we need to further deepen the integration of technology and management,continuously improve the geological disaster social service capacity and level.关键词
黄土地区/地质灾害/精细化风险评价/点面双控/风险管理Key words
loess regions/geological disaster/refined risk assessment/double-control of point and zone/risk management分类
天文与地球科学引用本文复制引用
冯卫,贾俊,武文英,刘魁,南亚林,张鹏,唐卓,洪勃,王涛..黄土地区山区城镇地质灾害精细化风险"点面双控"体系[J].地质通报,2026,45(4):620-633,14.基金项目
陕西省重点研发计划项目《黄土地区地质灾害精细化风险评价及国土空间规划优化研究》(编号:2025SF-YBXM-292),中国地质调查局项目《黄土高原等典型地区地质灾害精细调查与风险管控》(编号:DD20221739)、《国家地质安全监测预警网运维(西安地调中心)》(编号:DD20251300216),自然资源科技战略研究项目《地质灾害风险防控及国土空间规划研究》(编号:2023-ZL-13)和国家重点研发计划重点专项《黄土高原基础设施密集区重大链生灾害时空演化与成灾放大效应》(编号:2023YFC3008401) Supported by the Shaanxi Provincial Key Research and Development Program(No.2025SF-YBXM-292),the China Geological Survey projects(Nos.DD20221739,DD20251300216),the Strategic Research Project on Science and Technology of Natural Resources(No.2023-ZL-13)and the National Key Research and Development Program of China(No.2023YFC3008401) （编号:2025SF-YBXM-292）
