The Research Of Non-excavation Anti-slide Pile’s Key Technology

For traditional anti-slide pile has defects in safety,efficiency,economy andenvironment,a new anti-sliding structure is expounded--non-excavation anti-slide pile whichis combined by micro-piles,anchor and reinforced concrete beams.Non-excavation anti-slidepile has a triaxial anti-slide performance in lateral,longitudinal and vertical direction and it ishigh-efficiency,environmentally friendly and safe.A comprehensive exposition about thenon-excavation anti-slide pile’s arrangement on the cross-section plane and space is made inthis paper. Single pile differential equation is constructed using “m” method and solved usingpower series method.Considering the mechanical characteristic of the non-excavationanti-slide pile and the single pile differential equation,its calculation model is constructed andsolved by theory of beam on elastic foundation and displacement method.The1:1model testof three stress conditions which are landslide thrust,cable tension and both of landslide thrustand cable tension is processed on the project site.Using FLAC3D,numerical computation ofthe pile impacted by landslide thrust and both landslide thrust and cable tension iscalculated.From calculations and experimental results,the first row pile on the mountain sideshares most of the landslide thrust which is descending from the mountain side to the themountain side.Anchor cable on the top of the pile can significantly improve the stress state ofnon-excavation anti-slide pile.Improving the strength of the soil in the pile and the rigidity ofthe whole pile can make the force on every rows more uniform.Its construction technology isresearched and applied in landslide group management project of K134segment in G7high-speed,which enriched landslide treatment engineering measures and created a bettereconomic and social benefits.