Application of Precise Design Concept in Prevention and Treatment of Slope

Based on an unstable slope in Fangshan district of Beijing, three hidden dangers were pointed out by precise investigation and analysis of requirements of protected object and engineering geological conditions. The hidden dangers were the unstable slope behind the house, the collapse of the roadbed and the collapse of the retaining wall in front of the yard. On the basis of taking the geological and topographical conditions and householders’ requirements into consideration, precise design concept was applied. Gravity retaining wall and intercepting drain were used to control the slope behind the house. Two-stage gravity retaining walls were used to treat the collapse of the roadbed. Sheet pile wall was applied to prevent the collapse of the retaining wall in front of the yard. Precise design concept in prevention and treatment of slope was discussed and summarized. The principles of ‘project safety, convenient construction, economical cost, people-oriented and environment-friendly’ were put forward.