Stability Analysis And Control Designs On Chengnan Primary School Landslide In Fanchang

Fanchang South County primary school is located in the east of the Chengnan primary school on the eastern side of the hill which next to the geological disasters of landslide in Fanchang. The landslide, occurred on July2,2009, caused a new stone damaged retaining wall, wall cracks and bulging. The landslide on the new3teaching Buildings with4floors(teaching building was built in the end of6which has not yet been put into use). It has a serious threat for safe using and operation.This article combined The Fanchang south of the city primary school landslide investigation report, with the train of thought of geological process mechanism analysis and quantitative evaluation, combined with the relevant information and perspectives, studied the stability of the landslide in several ways. Based on the treatment scheme of landslide has carried on the preliminary discussion and design. In the study, you can get the following understandings:1. The slide is the shallow drawing soil landslide.2. Overlying clay is the main material source and the slope instability is opening in artificial slope cutting surface. By the way, the slope rainfall is increased body weight, infiltrating rainwater infiltration, sliding surface new retaining wall under multiple factor to induce into the rock lead to. And led to a new drum before retaining wall deformation, summon up some serious cracking.3.Numerous prosperous south of the city primary school landslide FLAC-3d simulation show that the stress distribution is concentrated in the slope and the slope toe, overall instability of landslide. The conclusion is consistent with the actual investigation and analysis of geological conditions.4. Numerous prosperous south of the city primary school the limit of the landslide stability analysis results show that the circular arc Swedish method in the stability calculation result of landslide stability is not enough, in the extreme operating condition, there is still a possibility slip fever, needing to take engineering measures to improve the stability.5. Landslide control engineering design research in view of the numerous prosperous south of the city primary school landslide is put forward "longitudinal ribbed reinforced concrete beams and beams of frame beam system". At the same time, designs the top surface of soil in the slope drainage and measures effective scheme design. The scheme greatly improve the stability of the slope to reduce the possibility of a landslide instability disasters impact again and eliminate the hidden trouble of the landslide disaster.