论文部分内容阅读
为探讨公路岩石路堑边坡植被的自然恢复效果,为山区公路边坡防护设计和植被恢复设计提供参考,调查了鲁中山区的6条省道和2条国道,得到了边坡的岩石类别、风化程度,以及边坡的建设年限、坡度、坡高和边坡植被的覆盖度与优势物种,并简要分析了植被自然恢复的原因。初步结果显示:(1)花岗岩、闪长岩边坡的植被自然恢复效果远好于石灰岩边坡;(2)黄背草、荩草等为花岗岩和闪长岩边坡的优势物种,而荆条、酸枣等为石灰岩边坡的优势物种。建议:(1)对稳定的花岗岩和闪长岩边坡宜采用不妨碍植被生长的防护型式,实现植被的自然恢复;(2)对石灰岩边坡,宜采用岩石裸露处理,并穴栽灌木进行美化;(3)高速公路建设资金充裕不应成为随意扩大边坡工程防护的理由,将边坡植被自然恢复的理念应用到高速公路边坡设计中非常重要。
In order to explore the natural restoration effect of highway rock slope cutting vegetation, this paper provides a reference for slope protection design and vegetation restoration design of mountainous highway, investigates 6 provincial highways and 2 national highways in Luzhong Mountain Area, obtains the rock types, The degree of weathering, the construction period of the slope, the slope, the slope height and the coverage of the slope vegetation and the dominant species, and the reasons for the natural recovery of the vegetation are briefly analyzed. The preliminary results show that: (1) the natural restoration effect of granite and diorite slope vegetation is far better than that of limestone slope; (2) the yellow grass, ragweed is the dominant species of granite and diorite slope, , Jujube and other advantages for the limestone slope species. Suggestions: (1) For the stable granite and diorite slope, it is appropriate to adopt the protection type that does not hinder the growth of the vegetation to realize the natural recovery of the vegetation; (2) For the limestone slope, the bare rock treatment should be adopted, Landscaping; (3) Sufficient funds for expressway construction should not become the justification for expanding the protection of slope engineering freely. It is very important to apply the concept of natural restoration of slope vegetation to slope design of expressway.