长江三峡库岸带崩滑灾害的预测与预防

Prediction and prevention of collapse-slide hazards occurred in costal zone of three gorges reservoir of Yangtze River

三峡水库蓄水后,库区水位的大幅度上涨及水位变动带(消落带)的形成等一系列因素将导致原谷坡地貌过程发生较大的变化。通过长期的野外考察认为,除了原有的几百处大大小小的崩塌滑坡堆积体以外,在今后的库岸再造过程中,必定还会发生大量的崩岸或塌岸事件,对沿岸局部地段的生态安全、工程安全与移民城镇家园的安全将构成较严重的威胁。对三峡水库库岸带各种堆积物的不稳定性及其危害方式和程度进行了评价,并对这些地段的开发利用提出了建议。

After the water storage, a serious of environment factors changed the slope landforms in the three gorges reservoir area, including the rise of water level and change of water level belt （hydro-fluctuation belt）. Based on the field investigation, the authors considered that, besides the existing hundreds of landslide massifs, more collapse-slide hazards would occur in the forthcoming several decades during the reservoir bank in the process of reconstruction, and posed a great threat on ecological security, engineering safety and the safety of homestead. Therefore, the authors evaluated the bank sediments stability and degree of hazards in the reservoir area, and some suggestions were put forward on the future development of the area.