G108周至— 宁强段公路灾害调查及防治对策

通过对G108周至一宁强段公路灾害概况和特征进行实地调查，从地形地貌、地层岩性、地质构造、气象河流特征和人为影响等方面分析和研究了灾害的形成．发现该段常见的公路灾害主要有地质灾害和水毁灾害，包括崩塌、滑坡、泥石流、路基沉陷及沿河公路水毁5类，其中崩塌、滑坡并口沿河公路水毁尤为严重。最后，针对各种公路灾害类型，提出了具体的防治对策。

Disaster Investigation and Countermeasures of National Highway G108 Zhouzhi to Ningqiang Section

By site surveying on profile and features of the disasters of G108 Highway Zhouzhi to Ningqiang Section, the paper analyzes and studies the formation of the disasters from the topography and geomorphology, lithology, geological structure, meteorological river characteristics, human impact and other environmental factors. The paper finds that the common highway disasters are geological disasters and flood disasters, which include 5 kinds of disasters, collapse, landslide, debris flow, roadbed subsidence and washout of highways along rivers. Of these 5 disasters, collapses, landslides and washout of highways along rivers are the most significant threats. Fi- nally, according to every type of highway disasters, the paper puts forward specific countermeasures.