武隆至涪陵乌江两岸地质灾害发育特征

武隆至涪陵是乌江航运进入长江的咽喉要道，也是地质灾害多发的地区。现场调查表明，沿岸长约90km范围内，发育有滑坡24处、泥石流沟2处、较大规模的岩堆4处和多处崩塌。分析认为，沿岸地质灾害的发育与分布与地层岩性、地质构造及河谷岸坡类型密切相关。河流对斜坡坡脚的切蚀作用、暴雨以及人类活动是地质灾害形成的重要诱发因素。目前沿岸多数滑坡处于基本稳定状态，少数滑坡受降雨及江水涨落的影响而处于周期性的蠕动变形状态；三峡水库蓄水后，部分滑坡复活的可能性较大，原来稳定的部分岸坡和岩堆也有可能进入失稳状态。

Development characteristics of geological hazards along banks of Wujiang River from Wulong to Fuling

The place from Wulong County to Fuling City is a strategic passage of the Wujiang River into the Yangzi River. Based on the comprehensive investigation in-situ, it has been known that there are 24 landslides,2 debris flows, 4 crushed-rock piles and lots of small rock-falls along banks of the Wujiang River from Huangcao Town of Wulong County to Fuling City in the scope of 90km. After summing up and researching on the development and distribution regularity of the geological hazards, it has been pointed out that they are correlated closely with the stratum rock property , the geological structure and the relationship between the flow direction of the river and the direction of strata of bank slope. The rainstorm, the eroding action of the river to the bottom of the bank slope and the human activities about cutting the slope are the major inducement factors of occurrence of the geological hazards. Through assessment of the hazards stability, it is considered that the most of them are in the basic stability condition, and part of them in the periodical creeping deformation condition influenced by the rainfall and the flowing and ebbing of the Wujiang River. After the Sanxia Gorge reservoir reserves water, parts of the landslides and crushed-rock piles will have the probability of sliding again.