A study of remediation of valley-type landslides in the Loess Plateau:exemplified by the Yanjiagou landslide in Zichang county of Yan’an

Taking the Yanjiagou landslide in Zichang county of Yan′an as an example,this paper analysed the developing features and reactivation mechanism of the valley-type landslides.The fundamental cause of the reactivation of the valley-type loess landslide is thought to be the continuous erosion on the landslide body,which produces a new free face at the toes of landslides.Countermeasures based on incorporation of side retaining walls and water drainage are proposed to realize low-cost remediation of ...