小浪底水利枢纽东苗家滑坡预警系统研究

发布时间：2018-04-30 13:47

  本文选题：东苗家滑坡 + 边坡稳定性分析　； 参考：《水力发电学报》2017年09期

【摘要】：利用Flac3D分析了小浪底水利枢纽东苗家滑坡的稳定性,滑坡体在正常条件下整体处于稳定状态,在暴雨工况下出现较大变形,可能诱发滑坡体破坏。基于17年的滑坡表观和深部变形监测数据,分析了滑坡发展趋势。在稳定性分析和发展趋势判别基础上,布置了表观及深部变形、渗压、降雨等监测项目,建立了物联网自动化监测方案和预警系统。提出了东苗家滑坡体的三级失稳预警模式,分别确定了各级失稳模式的降雨量、变形速率等指标的预警阈值。
[Abstract]:The stability of Dongmiaojia landslide in Xiaolangdi Water Conservancy Project is analyzed by Flac3D. The landslide body is in a stable state under normal conditions and has a large deformation under the condition of heavy rain, which may induce landslide failure. Based on the 17-year landslide surface and deep deformation monitoring data, the development trend of landslide is analyzed. On the basis of stability analysis and development trend discrimination, monitoring items such as apparent and deep deformation, osmotic pressure and rainfall are arranged, and the automatic monitoring scheme and early warning system of the Internet of things are established. The three-stage instability warning model of Dongmiaojia landslide is put forward, and the early warning threshold of rainfall and deformation rate of each instability model is determined respectively.
【作者单位】： 华北水利水电大学岩土力学与水工结构研究院;
【基金】：国家科技支撑计划(2015BAB07B08) 国家水利公益性行业科研专项(201301034)
【分类号】：P642.22;TV223
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本文编号：1824793