Rainfall-Induced Landslide Project Treatment And The Forecasting And Early Warning Of The Disaster

Rainfall in particular, a lot of rain or heavy rain triggered the landslide is undoubtedly one of the most important factor, the mechanism of rainfall-induced landslides and the corresponding evaluation method has always been academics, engineers are very concerned about, but difficult to resolve an issue. Conjunction with national project "Hunan Zhuzhou Yandi Ling Landslide Control Project" and horizontal issues "Yandi Ling Landslide Monitoring" topic, carried out Yandi Ling landslide comprehensive geological analysis, numerical analysis, monitoring and forecasting analysis, the establishment of project The rainfall on slope stability for the evaluation and analysis methodology, key findings are as follows:(1) Detailed analysis of the Yandi Ling landslide morphology, physical characteristics of sliding, sliding bed characteristics, characteristics of slip bands and using the limit equilibrium analysis of its weight, weight + heavy rain, storm + weight + seismic stability of three types of condition The results show that the Yandi Ling landslide is a typical tractor-landslide, rainfall is the main cause slip factor, Yandi Ling construction process of artificial excavation into the slope leading to the decline of the dominant factor;(2) Infiltration under rainfall conditions, with time bulk density of soil, groundwater movements, slope and shear strength of seepage face position changes, hourly use analysis of various stages of slope safety factor; analysis of various factors on the stability of landslide impact.(3) Yandi Ling landslide for the specific topography and sliding, we design proceed from surface monitoring, supplemented by deep displacement monitoring and groundwater monitoring, multi-layered, multiple methods, multi-instrument integrated monitoring system for the prediction Fenxi Yandi Ling landslide disasters and the implementation of information management to provide a reliable reference; (4) Landslide nonlinear evolution, combined with the measured data Yandi Ling landslide, landslide prediction of nonlinear carried out, respectively, using the index shift method and nonlinear regression analysis of the prediction method, based on time series phase space reconstruction method of forecasting methods, and joint BP model and the inverse function Verhulst Verhulst model residual correction model, get a more accurate prediction. According to forecast the results of the construction proposals, timely adjustment of the construction process, to avoid the Yandi Ling landslide disasters.(5)According to the background of Yandiling as a tourist place, the frame of emergency plan of Yandiling landslide disaster was proposed. It is suggested that the emergency plan for a tourist place should pay attention to the methods in reducing the bad influence of disaster on the tourist persons, and it should devote to protecting the scape in the period of rush emergency and considering the recovering of the function of tourist place and its scape.