| 梁永顺,孙永彬,王瑞军.北京市延庆区秤勾湾沟泥石流特征及预警雨量研究[J].矿产勘查,2021,12(8):1835-1843 |
| 北京市延庆区秤勾湾沟泥石流特征及预警雨量研究 |
| Study on the characteristics of debris .ow and early warning rainfall in Chenggouwan gully, Yanqing District, Beijing |
| 投稿时间：2020-06-28 |
| DOI： |
| 中文关键词: 延庆区 秤勾湾沟 危险性评价 URCS-CN模型 预警雨量阀值 |
| 英文关键词: Yanqing area Zhengouwan gully risk assessment URCS-CN model warning rainfall threshold |
| 基金项目:本文受北京市延庆区泥石流沟精细调查与评价项目(0747-1761SITCN426-4)资助。 |
|
| 摘要点击次数: 1867 |
| 全文下载次数: 501 |
| 中文摘要: |
| 本文以北京市延庆区秤勾湾泥石流沟为研究对象，利用泥石流沟精细调查及历史资料，研究其降雨特征、流域特征、分区特征、物源特征，采用灰色系统关联度方法开展危险性评价研究，建立 URCS-CN预警雨量模型，开展预警雨量阈值研究。研究结果显示:秤勾湾泥石流沟危险性评分为 0.84分，危险等级为高危险，流域内红色预警过程雨量 122 mm、橙色预警过程雨量 109 mm、黄色预警过程雨量 95 mm、蓝色预警过程雨量 82 mm；秤勾湾沟泥石流累计流量与预警流量呈线性关系，前期的有效降雨与短时强降雨呈彼增我减的态势，在红色预警范围左侧为泥石流灾害的低频区，红色预警范围为泥石流灾害的高频区。研究成果为延庆地区该类泥石流单沟预警模型研究和灾害防治提供科学依据。 |
| 英文摘要: |
| Debris .ow gully based on Beijing Yanqing district scale hook bay as the research object, using the debris .ow gully careful investigation and historical data, study the characteristics of rainfall and river basin, partition characteristics, source, using grey system prediction method to carry out risk assessment research, establish early warning model of rainfall, rainfall warning threshold study. The results show that the risk score of debris .ow gully in Jingou Bay is 0.84, and the danger level is high danger. The rainfall in the basin is 122 mm during the red warning, 109mm during the orange warning, 95mm during the yellow warning, and 82mm during the blue warning. There is a linear relationship between the cumulative .ow of debris .ow and the early-warning .ow in Liangouwan gully, and the e.ective rainfall in the early stage and the short-term heavy rainfall show a trend of increasing and decreasing. The left side of the red early-warning range is the low-frequency area of debris .ow disaster, while the red early-warning range is the high-frequency area of debris .ow disaster. The research results provide scienti.c basis for the research on the early warning model of such debris .ow in single gully and disaster prevention and control in Yanqing area. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|