院报 ›› 2023, Vol. 40 ›› Issue (2): 124-130.DOI: 10.11988/ckyyb.20210841

• 工程安全与灾害防治 • 上一篇    下一篇

黄冈地区降雨型滑坡影响因素及与降雨量的关系

邹浩1,2, 何霏1, 白俊龙3   

  1. 1.湖北省地质局 第三地质大队,湖北 黄冈 438000;
    2.资源与生态环境地质湖北省重点实验室,武汉 430034;
    3.武汉工程大学 土木工程与建筑学院,武汉 430074
  • 收稿日期:2021-08-10 修回日期:2022-06-21 出版日期:2023-02-01 发布日期:2023-03-07
  • 通讯作者: 何 霏(1975-),女,湖北襄阳人,工程师,主要研究方向为水文地质、工程地质、环境地质。E-mail: 595102424@qq.com
  • 作者简介:邹 浩(1983-),男,湖北公安人,高级工程师,博士,主要研究方向为岩土体稳定性评价与地质灾害防治。E-mail:258462846@qq.com
  • 基金资助:
    湖北省地质局2021年度科技项目(KJ2021-7)

Factors Affecting Rainfall-induced Landslides in Huanggang and Its Relation with Precipitation

ZOU Hao1,2, HE Fei1, BAI Jun-long3   

  1. 1. The Third Geological Team of Hubei Geological Bureau, Huanggang 438000, China;
    2. Hubei Provincial Key Laboratory of Resources and Ecological Environmental Geology,Wuhan 430034,China;
    3. School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430074, China
  • Received:2021-08-10 Revised:2022-06-21 Online:2023-02-01 Published:2023-03-07

摘要: 湖北省黄冈市属于低山丘陵地区, 多发生小规模滑坡灾害, 降雨是诱发滑坡灾害最主要的外因之一, 分析降雨型滑坡各影响因素对滑坡数量贡献率的大小及其与雨量之间的关系, 对黄冈地区的防灾减灾具有重要作用。 利用2011—2020年黄冈市238个气象观测站雨量数据资料, 结合滑坡灾情数据, 分析了区内降雨型滑坡的区域性分布特点, 并根据月平均降雨量、 工程岩组和坡度对降雨型滑坡数量的贡献率, 将区内降雨型滑坡划分为高易发区、 中易发区和低易发区, 选择关键期日均降雨量与前期日均降雨量作为雨量阈值判定标准, 给出各个易发区在预报、 预警和警报3种状态下所对应的降雨量参考值, 为区域滑坡灾害防治提供了基础数据和科学依据。

关键词: 降雨型滑坡, 雨量关系, 贡献率, 黄冈地区, 易发区

Abstract: Huanggang City is located in a low mountainous and hilly area subjected to frequent small-scale landslide disasters. Rainfall is a major external cause of such landslide disasters. Analyzing the contributions of influencing factors to the number of rainfall-induced landslides and the relation between landslide and rainfall is of vital significance for the disaster prevention and mitigation in Huanggang. According to observation data of 238 meteorological stations in Huanggang from 2011 to 2020 together with landslide disaster data, the regional distribution of rainfall-induced landslide in Huanggang was examined. The contribution rates of monthly average rainfall, engineering rock formation, and slope gradient to the number of rainfall-induced landslides were obtained, and on such basis, the rainfall-induced landslides in the area were classified as highly susceptible, moderately susceptible, and lowly susceptible. Moreover, the reference values of rainfall corresponding to three levels, namely, forecast, early warning, and alarm were given with daily average rainfall in critical period and daily average rainfall in previous period as the rainfall threshold judgment criteria. The research findings offer basic data and scientific basis for the prevention and control of regional landslide disasters.

Key words: rainfall-induced landslide, relation with rainfall, contribution rate, Huanggang, susceptible area

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