| 朱江,亢亚惠,刘曼,杨胜雄,赵晓亮.清远市2011—2022年“龙舟水”地质灾害发育特征与降雨阈值研究[J].矿产勘查,2023,14(12):2480-2491 |
| 清远市2011—2022年“龙舟水”地质灾害发育特征与降雨阈值研究 |
| Study on the development feature and rainfall threshold of "dragon boat water" geological hazards in Qingyuan from 2011 to 2022 |
| 投稿时间：2023-10-10 修订日期：2023-12-11 |
| DOI：10.20008/j.kckc.202312018 |
| 中文关键词: 清远 龙舟水 地质灾害 发育特征 降雨阈值 |
| 英文关键词: Qingyuan dragon boat water geological hazards development feature rainfall threshold |
| 基金项目:本文受清远市财政资金项目（441801-2022-00600）资助。 |
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| 中文摘要: |
| 清远市是广东省地质灾害最易发的地区，以小型土质崩塌和滑坡为主；此外该地也是降雨最集中的地区之一。在“龙舟水”期间，清远市大范围、大型规模及灾情重大地质灾害频发。因此，研究“龙舟水”地质灾害主要发育特征和降雨诱发阈值，可使现有地质灾害专业监测预警系统由点向面转变，扩大监测预警覆盖范围，同时可以更好地科学部署汛期地质灾害防御工作。通过对清远市1978年以来地质灾害主要发育特征数据统计，以及2011—2022年“龙舟水”地质灾害经验性阈值统计，可以揭示清远市“龙舟水”地质灾害发育与阈值规律。此外，通过剖析2022年典型“龙舟水”降雨过程及地质灾害主要发育特征、空间分布，可以获取清远市地质灾害易发、多发地区诱发大范围、大型规模及重大地质灾害的累计降雨量阈值，据此可以提出预警建议值。研究成果可用于地质灾害防御工作部署和地质灾害监测预警系统的自动预警预报。 |
| 英文摘要: |
| Qingyuan City is the most prone area of geological disasters in Guangdong Province， among which the main geological disasters are small soil collapse and landslide. In addition， Qingyuan is also one of the most concentrated areas of rainfall. During the "dragon boat water" period， large-scale major geological disasters occurred frequently in this city. Therefore， the study of the main development characteristics of "dragon boat water" geological disasters and the rainfall induced threshold can transform the existing professional geological disaster monitoring and warning system from point to surface， expand the coverage of monitoring and warning， and better deploy geological disaster prevention work in flood season. Through the statistics of the main development characteristics of geological disasters in Qingyuan since 1978 and the empirical threshold of "dragon boat water" geological disasters in 2011—2022， the development and threshold law of "dragon boat water" geological disasters in Qingyuan City can be revealed. In addition， by analyzing the typical "dragon boat water" rainfall process and the main development characteristics and spatial distribution of geological disasters in 2022， the cumulative rainfall threshold of large-scale major geological disasters in Qingyuan City can be obtained， and the recommended value of early warning can be put forward accordingly. The above research results can be used for the deployment of geological disaster prevention work and the automatic early warning and forecast of geological disaster monitoring and early warning system. |
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