Screw Grave Landslide Stability Analysis And Control Measures

Graduated from Chengdu University of geotechnical engineering, a master’s degree in engineering. In this paper, Neijiang Longchang County town Fureai Genting Village screw grave landslide for the study, follow the on-site research conceptual model-simulation of deformation and failure mechanisms and verification-Stability evaluation-the basic technical control measures proposed routes to instability in landslide a large number of field-based geological survey site, a more comprehensive study of engineering geological conditions of the landslide, slope structure, body structure and rock slope deformation characteristics, on this basis, the process through the development of the geological evolution of the slope there evidence for the mechanism of deformation and failure analysis, deformation and failure mechanisms of its conceptual model. Since then the use of numerical simulation method landslide stability, verify the correctness of the conceptual model and parameter values is reasonable. In-depth study of the deformation and failure mechanisms, based on the use of various limit equilibrium methods of slope deformation of the body under different conditions of stability of the analysis and evaluation, and the calculation of the decline in various deformed thrust, and so for the district, according to the deformed put forward the corresponding control measures. Draw the following key findings:(1) landslide environment in which the regional geology, topography, lithology and human activities such as construction of the landslide is a major factor. Precipitation-induced landslides is an important condition to further accelerate the development.(2) screws and other grave landslide Ⅰ-Ⅰ’, Ⅱ-Ⅲ’,Ⅲ-Ⅲ’ profile in the natural state of the X, Y direction of the displacement was significantly lower than the heavy rain conditions, and the displacement are concentrated in the later parts of the bracing, but the two by displacement are small.(3) through the screw piles and grave decline in the support measures under the retaining wall profile Ⅰ-Ⅰ’, Ⅱ-Ⅱ’,Ⅲ-Ⅲ’ cross-section profile role in the heavy rain X, Y displacement distribution for analysis concludes that the slope deformation mechanism in the rain under the performance of the slope or retaining wall in piles after the small settlement and sliding, and the remaining parts of the displacement of small, stable landslide.