陕西省柞水县不稳定斜坡变形破坏模式研究

通过对柞水县104处不稳定斜坡的调查分析,发现区内以堆积层不稳定斜坡为主;最有利于不稳定斜坡发育的原始坡度区间为30°～45°,最有利于不稳定斜坡发育的原始坡高区间为50～100 m,且由于人类工程活动减弱,在原始坡度大于45°、坡高大于100 m的高陡斜坡,不稳定斜坡发育反而减少;不稳定斜坡变形破坏模式主要表现为滑移-拉裂模式、滑移-压致拉裂模式和弯曲-拉裂模式三类,其中以滑移-拉裂模式发育最为广泛。

Study on Deformation Failure Modes of Unstable Slopes in Zhashui County of Shaanxi Province

Through the investigation and analysis of 104 unstable slopes in Zhashui County, it is found that the stacked unstable slope is the main slope in the area. The original slopes range is 30~45 degrees, which is most favorable to the development of unstable slopes, and the original height interval which is most conducive to the development of unstable slope is 50~100 m. Due to the weakening of human engineering activities, the development of unstable slopes is reduced in high-steep slopes with original slopes greater than 45° and slope heights greater than 100 m. The deformation and failure modes of unstable slopes are mainly divided into three categories:slip-cracking pattern, slip-compression cracking pattern and bending-cracking pattern and slip-cracking pattern is the most common pattern.