Tianquan Erzhong Houshan Landslide Characteristics And Prevention Measures Of Design

Tianquan County Urban sand dam area in 2013 after the Lushan earthquake, as the new town extension area, plans to build schools and hospitals, centralized resettlement housing,ring road and the scattered residents etc.The area for the Qingyijiang River right bank terrace and slope residual accumulation in the mixed layer, human engineering activities, current slope stability, but with the 2015 school site and large area excavation construction (digging slope and embankment) caused by the original topography, soil structure and mechanical characteristics of broken, the formation of 4-10m of soil surface, and construction during the territory of high rainfall, rainfall continued, resulting in instability, slope and landslide,seriously affect the normal construction of the school playground, basketball court, and the original buildings on the slope safety.Through geological investigation, surface mapping and geological exploration, find out the landslide landform, formation lithology, geological structure, geological conditions and the deformation of landslide damage scope and scale; find out the range of the landslide material composition, rock structure and spatial distribution, and obtain the corresponding physical and mechanical parameters of rock and soil; hydrological geology the condition of landslide investigation, analysis and evaluation of the hydrodynamic characteristics of the landslide groundwater. Analysis of the main predisposing factors, present situation and development trend of stability and damage degree, the physical and mechanical parameters of landslide zone, landslide and landslide bed, stability calculation of disaster body, technical parameters needed for control engineering to determine the design, proposed a comprehensive program of anti slide pile wall plate and supplemented by cutting drainage,according to the different active earth pressure for the sectional design, obtained the A type and B type pile wall pile wall, and the pile wall size and reinforcement were calculated,finally got the comprehensive prevention and control measures of safe and reliable.