Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 41301508 |
| 青藏高原工程走廊热融滑塌变形监测分析与预警研究 | |
| 罗立辉 | |
| 主持机构 | 中国科学院寒区旱区环境与工程研究所 |
| 开始日期 | 2014 |
| 结束日期 | 2016 |
| 资助经费 | 250000(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 | Thaw slump, caused by permafrost degradation, ground ice melting, and so on, affects the engineering construction and permafrost environment in the Qinghai-Tibetan Engineering Corridor. Most of the current studies investigate from the angle of thermodynamics instead of the actual deformation of thaw slump; and the understanding of the spatial and temporal characteristics of thaw slump displacement is very limited. In this study, a Wireless Sensor Networks Observation System with GNSS sensors, tilt sensors, soil temperature and moisture sensors are proposed to be deployed in a typical thaw slump of Fenghuo Mountain regions of the Qinghai-Tibetan Engineering Corridor. Visualization modeling and simulation computing are applied to address the three key questions: (1) stability analysis of Wireless Sensor Networks in thaw slump under high-cold and freezing-thawing circumstance; (2) three-dimension surface deformation and response law of thaw slump under water and heat changes of frozen soil; and (3) disaster forecast and early-warning of thaw slump considering the displacement variation. The research aims to demonstrate the importance of Wireless Sensor Networks with GNSS technology in deformation measurement of thaw slump in the Qinghai-Tibetan Engineering Corridor; and to reveal the spatial and temporal characteristics of thaw slump displacement. In this way, the research will provide an application demonstration and technical support of deployment of real-time observation system in high-cold and freezing-thawing environment. The findings of this study may have important implications for supporting the development of suitable management strategies for the slope instability theory of thaw slump in the permafrost regions of the Qinghai-Tibetan Plateau. |
| 中文关键词 | 变形监测 ; 热融滑塌 ; 无线传感器网络 ; 预测预警 ; 青藏高原工程走廊 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/346684 |
| 推荐引用方式 GB/T 7714 | 罗立辉.青藏高原工程走廊热融滑塌变形监测分析与预警研究.2014. |
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