山西黄土地区公路边坡防护设计研究

The Study on the Highway Slope Protection Design for Loess Area in Shanxi Province

随着中西部经济快速发展,高等级公路建设步伐不断加快,基本上实现了县县通高速。高速公路穿过沟壑纵横的黄土高原地区时,由于技术指标及地形条件限制,势必会产生大量的深路堑边坡。笔者通过对山西省近年来高速公路设计中遇到的黄土边坡的类型组合及采用的防护形式进行分类归纳,总结了工程中经常遇到的5种黄土边坡地层组合形式,分别对黄土边坡的坡面破坏与坡体破坏两种破坏模式进行阐述。并从坡面防护与坡体防护这两个角度进行研究,提出边坡防护应依据黄土边坡的地层组合,结合边坡的破坏模式,按照"建绿色通道,走环保之路"的设计理念,选择经济、合理、美观、实用的边坡防护形式。

Through the classification and summarization of the loess slope type combination and the adopted protection form in Shanxi highway design in recent years, this paper summarized five types of loess slope stratum combination in the engineering, and respectively illustrated two destruction modes of loess slope surface destruction and slope body destruction. From two angles of slope surface protection and slope body protection, it also studied and proposed that the slope protection should be in accordance with loess slope stratum combination. Combined with the slope destruction modes, according to the design concept of'building a green channel, and going the way of environmental protection', it chose the economical, reasonable, beautiful and practical slope protection form.