辽宁太平湾地区地质灾害特征及其对机动通行能力的影响

Characteristics of geological disasters in Taiping Bay district of Liaoning and their impact on motor traffic capacity

通过对辽宁太平湾地区地质灾害调查分析,确定该区地质灾害发育类型主要为崩塌、滑坡、泥石流和地面塌陷等。分析其发育规模、危害、稳定性及其分布规律等特征,确定影响机动通行能力的地质灾害主要为崩塌灾害,多发生于坡度在60°以上,坡高> 10 m的岩质凸型斜坡的阳面,且多分布在深大断裂与活动断裂的挤压破碎带、断裂交汇部位及其附近,在活动构造断裂带应力的直接作用下对道路的拉张扭曲变形产生影响。针对调查区地质灾害的形成条件及影响因素,着重分析其易发区划分及对机动通行能力的影响。

Through investigations and analysis of geological disasters in Taiping Bay district of Liaoning,the authors found that the major disasters in this area are collapse,landslide,debris flow and ground collapse.By studying their scale,detriment,stability and distributive rules,it is concluded that the main disaster affecting the motor traffic capacity is collapse,which often occurs on bumped rock slopes exposed to sunlight with slope over 60 degrees and the height over 10 m.As most collapses happened at or around the compresso-crushed zone and fault intersection of deep faults and active faults,the direct stress of the active fault stretched or distorted the roads.Based on the formation conditions and influence factors,the authors focused on analyzing the susceptible segments and the impact on motor traffic capacity.