基于边坡立地条件的内蒙古中东部高速公路边坡生物防护模式研究

Study on Biologically Slope Protection Mode for Highways in Central Eastern Inner Mongolia Based on Site Conditions

基于内蒙古中东部高速公路边坡立地条件的调查,从边坡坡度、母质、气候、土壤、植被等方面归纳总结出了其高、陡、土壤贫瘠、植被受到破坏、气候条件差等特点。对已有生物护坡的三大类方法的技术原理、适用范围、施工工艺进行了论述。结合已有施工实例验证:厚层基材喷附技术结合植生袋技术是适用于内蒙古中东部的生物护坡模式,但需在施工过程中重点考虑植物配置设计、营养土配制这两个环节。

Based on the investigations for slope site conditions of the highways in Central Eastern Inner Mongolia,it was generalized from the aspects of slope gradient,parent material,soil and vegetation that there was featured by high and steep slopes,poor soil,damaged vegetation,and bad climatic conditions.In this paper,the technical principles,application ranges and construction technologies of the three kinds of existing biologically slope protection modes were expounded.Depending on the construction case studies,it was validated that thick layer base material spraying technology combined with vegetation bags was a suitable mode therein; however,plant configuration design and nutrient soil preparation should be given more consideration during the construction.