湖北长阳丹水撇洪渠出口左岸边坡稳定性分析及治理

Stability analysis and treatment measures of the slope at the left bank of the outlet of Danshui Piehong Channel in Changyang,Hubei Province

根据对该边坡的变形破坏特征及形成条件分析,属滑移-拉裂型边坡。经受了诸如自重应力、构造应力、卸荷变形、降雨等内外因素作用,斜坡岩体沿软弱结构面发生滑移变形。随着剪裂面上的拉应力集中而产生拉裂缝,一旦破坏面贯通,将导致边坡破坏。用计算和经验相结合的方法确定了潜在滑面的位置,并通过参数反演,对滑坡的稳定性进行了定量评价。通过技术经济比较,针对边坡的形成机制、边坡各个部位的变形发展特点及其重要性,采取了分区治理措施。既达到了治理效果又节省了人力物力,可供从事类似工程评价和治理的工程人员参考。

According to analysis on the deformation and failure character and forming condition of the landslide, it shows that the landslide belongs to sliding tension type. Suffering from such as earthquake, gravitation,construct stress,rainfall action etc, the sliding deformation occured along the weak structural surface in the slope, and the cracks occur under the concentrated draught stress. Once the breaking surface has been joined up the slope will slide down. To ascertain the location of the slide plane,a new method is perfomaed in the paper. By parameter anti-deducing, the stability of the slippery slope is evaluated. Aiming at its forming mechanism and the features of deformation of every local part, through tech-economic comparison, the overall comprehensive treatment measures are introduced. The treatment measures could be referred by engineers and technologists.