Comprehensive Treating And Engineering Application Of Highway Excavation And High Slope

Highway excavation is always found in engineering construction, such as railway and highway. The protection of highway excavation is very important, which affects the construction period, capital invested and environment protection. Because of disjunction between investigation, design and construction, being short of system controlling and methods, engineering accidents, such as slope collapsing and slide, occasionally occur during slope treating, which cause the loss of belongings of the nation and the people, and the people's life are being menaced. In a word, the slope fathering must be estimated and renovated newly. Slope treating is a systemic project, which involves the knowledge of geology, geotechnique, structure, environment, and so on. The method of risk evaluation is introduced to slope treating in the world.Based on the highway excavation and slope treating from DK133+166 to DK133+421 on MEIKAN railway and the slope slide treating between National road 105 and PINGBEI, Some problems are studied emphatically in this paper. The main characteristic contents are as follows:1) Highway excavation and slope treating is a part of the major project, and affecting the quality, process and imagery of the whole project. The decision of highway excavation and slope treating must be made comprehensively and early, and dealt with in time. The program should be analyzed in accordance with local condition.2) The major key of highway excavation and slope treating lies in the organic combine of geology survey, design and construction.3) The risk estimation method is a reliable rules in the comprehensive decision of slope systematic treating, which is the effective means that organic combine survey, design with construction.4) Prestress anchoring is a effective method in controlling the displacement of the slope, which has obvious predominance.5) The protection of slope becomes more and more important, along with the elevation of the people's living and the developing of railway and highway. More and more eyes are kept on the imagery design of highway slope.