Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 41501114 |
| 基于次声监测的泥石流定位方法研究 | |
| 冷小鹏 | |
| 主持机构 | 中国科学院、水利部成都山地灾害与环境研究所 |
| 开始日期 | 2016 |
| 结束日期 | 2018 |
| 资助经费 | 240000(CNY) |
| 项目类别 | 青年科学基金项目 |
| 资助机构 | CN-NSFC（国家自然科学基金） |
| 语种 | 中文 |
| 国家 | 中国 |
| 英文简介 | Observations and studies show that, the formation and movement of debris flow willgenerate infrasonic signals. Infrasound has characteristics of strong penetrating power and weak attenuation , and its propagation speed is greater than thevelocity of debris flow, so infrasound has been applied to the monitoring and early warning of debris flow. However, the method of infrasound monitoring of debris flow is not accurate and timely, because of the interference of various natural or man-made noise to reduce the alarm accuracy, but also can only monitor whether debris flow happened nearby, so which is not able to determine the location of debris flow happened .This study is based on the research of debris flow of infrasound and environmental interfere infrasonic characteristics, to establish key feature library of debris flow infrasound and typical interference of infrasound, and research the analysis method of multichannel infrasonic signal correlation based on sensor array. According to the spectral characteristics and time zone distribution difference between the target signal and the interference signal, to research infrasound signal recognition of debris flow. On this basis, according to the mountainous terrain characteristics and the propagation law of infrasound, research and analysis the best method of debris flow infrasonic monitoring array deployment, and combined with GIS technology to establish the algorithm model of debris flow infrasonic source localization, to estimate accurately position of debris flow happened, achieve more effective debris flow warning accordingly. |
| 中文关键词 | 次声 ; 泥石流 ; 监测 ; 定位 |
| 来源机构 | 中国科学院、水利部成都山地灾害与环境研究所 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/346923 |
| 推荐引用方式 GB/T 7714 | 冷小鹏.基于次声监测的泥石流定位方法研究.2016. |
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