Optimizing Combination Of Expressway Excavation Slope Protection

Ecological slope protection technology is an engineering technology arising with the construction of expressway. It takes full advantage of vegetation slope protection mechanism to mitigate the conflict between engineering construction and ecological environment and reduce the influence of expressway to ecological environment. The traditional slope protection and the ecological slope protection all have their own disadvantage. In order to make the slope stabilization for a period of time, we should make the two technologies combined harmoniously, which reflect the harmony between human and nature. This will be a trend of expressway slope protection. It indicates the direction of expressway slope protection.This paper analyzes the factors of slope stabilization, summarizes the destruction forms and its engineering protection measures of expressway slope; summarizes the ecological protection measures of expressway slope on the base of study of vegetation hydraulic function and shallow reinforcement mechanism from the content, conformation and intensity of plants root; summarizes and evaluates the combination of these two technologies, researches SNS initiative flexible slope protection ;analyzes the applicability of SNS initiative system to ecological slope protection; carries on mechanics analyses to slope anti-brushing under the function of SNS system and vegetation; put forward an predigested calculation model. The result shows that SNS system can enhance the slope safety factor obviously. As an open system, SNS system can combine with vegetation to protect slope. This protection can guarantee the stability of slope to insure the security of traffic and resume the vegetation to beautify sight.The combination of SNS system and vegetation can make the most advantages of them. We should combine vegetation and deploy pattern based on the nature environment along the expressway. This can integrate the economical, artistic, practicability and validity of expressway slope protection design perfectively.