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研究地震造成的路线走廊带灾害与环境因子的关系,减少滑坡、泥石流、崩塌等灾害的发生,降低地质灾害对道路的破坏。通过对5.12汶川地震重灾区内G 213、G 317道路路段的资料收集、实地调查,结合理论分析,以ArcGIS软件为基础平台,分析了断裂带距离、地质岩层、地表粗糙度、坡度、坡向、植被类型、道路影响区共7个因子与地质灾害产生的关系。结果表明:距断裂带越远,受到影响越小;地质岩层越古老,越易发生灾害,岩质坡体灾害少于土质坡体;地表粗糙程度为1.2～2时,灾害的密度比较大;坡度为30°～60°时,灾害密度最大;阴坡灾害多于阳坡;阔叶林地带灾害密度分布最大;道路左右0.5km区域灾害密度最大。
To study the relationship between the route corridor-belt disaster and environmental factors caused by the earthquake, to reduce the occurrence of landslides, debris flows and landslides and to reduce the damage caused by geological hazards to the road. Based on the data collection and field investigation of G 213 and G 317 road sections in the hardest hit by the 5.12 Wenchuan earthquake and on the basis of theoretical analysis and ArcGIS software as the basic platform, the paper analyzes the relationship among fault zone distance, geological strata, surface roughness, slope, aspect , Vegetation types, road affected areas a total of seven factors and the relationship between geological disasters. The results show that: the farther away from the fault zone, the less affected; the older the geological strata, the more prone to disasters, rock slope disaster less than the soil slope; surface roughness of 1.2 to 2, the disaster density is relatively large; When the slope is 30 ° -60 °, the density of disasters is the highest; the disasters of shady slopes are more than the sunny slopes; the distribution of disasters in broad-leaved forest is the highest; the density of disasters in the area of 0.5 km around the road is the highest.