The Stability Analysis Of Zhonglian Landslide In Beichuan County And Its Control Design

With the rapid development of China’s economic construction, landslide disasters occur frequently, study on landslide stability analysis and treatment measures of concern. This article provides a brief overview of the domestic study on landslide stability on the basis of the current situation, on the formation mechanism and stability of Zhonglian landslide in Beichuan county; Application and research status of domestic and international control measures, in view of characteristics of Zhonglian landslides in Beichuan county, proposed treatment of the landslide by prestressed anchor cabl e frame, the main results are as follows:This article uses and local stability of numerical analysis method for landslide stability analysis, judge the landslide in storm conditions as a whole is in an unstable state, and other working conditions are in a stable state; local of landslide in storm conditions in a State of instability, in seismic conditions in an unstable state. Use transfer coefficient method for calculating lines circular arc slip surface glossy or falling in different operating modes of the remaining force, came to the largest remaining fell to the1245KN/m of landslide. Through the analysis and comparison, select the control scheme of prestressed anchor cable frame as the landslide. In research prestressed anchor cable and framework beam of role mechanism of Foundation Shang, on anchor cable, and framework beam of by force for has analysis, more design has rally512KN, and aspect spacing are for3.0M, and anchoring angle20°, and anchoring length8M, and7beam15.24steel stranded line of prestressed anchor cable, using Winkler elastic Foundation beam on framework beam of internal forces for calculation, design has section0.4mx0.4m of framework beam, and configuration has main reinforced for4D22main reinforced. Through the analysis of monitoring data, and displays the status of a landslide in the three phases:before the treatment tends to accelerate the deformation of landslide, gradually reducing and stabilizing treatment of landslide deformation, after treatment of landslide in a stable state, demonstrated the effectiveness of landslide control measures.