乌恰县道路边坡地质灾害影响因素及形成机理

摘要

The main types of geological disasters of road slope in Wuqia county is collapse disaster,Take collapses at 35 km from the 415 County Road for example,the influence factors of slope stability and formation mechanism were analyzed.The results show that the slope lithology is soft and hard alternated sand shale,slope type transverse slope,slope for artificial slope road the steep slope to slope,tectonic fissures,factors which caused the instability of the topography,lithology and rock mass structure;formation mechanism for slope erosion caused by rain erosion,isolated sandstone mudstone into ridges,forming surface,and tectonic fissures,collapse,slope and harm County Road Pedestrian vehicle.%乌恰县道路边坡地质灾害主要类型为崩塌灾害.以415县道35 km处崩塌灾害为例,对影响斜坡稳定性因素及形成机理进行分析.结果表明,坡体岩性为软硬相间的砂泥岩,坡体为横向斜坡,坡脚因人工切坡修路导致陡直,坡体构造裂隙发育.失稳因素有地形地貌、地层岩性及岩土体结构等.形成机理为坡体受雨水侵蚀使泥岩流失,砂岩孤立成脊形成临空面,且构造裂隙发育,发生崩塌,危害坡脚县道及过往行人车辆.