| 四川雅安市雨城区降雨诱发滑坡临界值初步研究 |
| |
| 引用本文： | 李媛.四川雅安市雨城区降雨诱发滑坡临界值初步研究[J].水文地质工程地质,2005,32(1):26-29. |
| |
| 作者姓名： | 李媛 |
| |
| 作者单位： | 中国地质大学(北京),北京,100083;中国地质环境监测院,北京,100081 |
| |
| 摘 要： | 四川省雅安市雨城区位于四川盆地西部,素有"雨城"之称。地质灾害以滑坡为主,且有群发性、浅层、规模小、降雨诱发的特点。作者分析了雨城区大量历史滑坡和降雨量数据,结合雨城区滑坡发育特点,选择3日(72h)内发生2个以上滑坡的点作为统计分析样本,进行不同阶段降雨量耦合关系分析,应用滑坡前3日累计降雨量与3日前15日累计降雨量,建立了滑坡发生与降雨量的统计关系:在雨城区,当前期无降雨、3日累计降雨量达到70mm时,将有滑坡发生;15日累计降雨量达到339mm时,也将可能出现滑坡。
|
| 关 键 词： | 雅安市雨城区 滑坡 降雨 临界值 |
| 文章编号： | 1000-3665(2005)01-0026-04 |
| 修稿时间： | 2004年8月19日 |
Preliminary study on precipitation threshold of precipitation-induced landslides in Ya'an Yucheng District, Sichuan |
| |
| LI Yuan.Preliminary study on precipitation threshold of precipitation-induced landslides in Ya''''an Yucheng District, Sichuan[J].Hydrogeology and Engineering Geology,2005,32(1):26-29. |
| |
| Authors: | LI Yuan |
| |
| Abstract: | Ya'an Yucheng District intituled "rain city" lies to the west of Sichuan Basin. The main geology hazard in it is landslide with the characteristics of multi-happened, shallow sliding-surface, small scale and rainfall-induced. Analysis of precipitation data associated with historical landslides in Ya'an Yucheng District is carried out to deterinine precipitation thresholds for the initiation of landslides. The precipitation thresholds are based on 3-day cumulative precipitation that occurred immediately prior to landslide events and antecedent 15-day precipitation that occurred prior to the 3-day amounts. In Yucheng District, when 3-day cumulative precipitation gets 70mm or antecedent 15-day precipitation gets 339mm, landslides will happen. |
| |
| Keywords: | Ya'an Yucheng District landslide precipitation threshold |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
