摘要
对鄱阳湖流域暴雨型泥石流形成机制与动力特征进行研究,旨在为此类山洪灾害防治及流域水工程安全提供借鉴。以江西省修水县卢庄沟暴雨型泥石流为例,通过现场调查和室内试验,对其发育特征及动力学特征进行分析。研究结果揭示该泥石流长6.25 km,流域面积4.27 km^2,物源62.46万km^3,主沟坡降大(524.1‰),高差约1 160 m地形易于汇水且泥石流动力足。江西省修水县卢庄沟泥石流形成机制和动力特征可总结为:暴雨-滑坡-松散堆积体搬运-老泥石流沟冲刷复活-泥石流形成。
The formation mechanism and dynamic characteristics of rainstorm-induced debris flow in Poyang lake valley of Jiangxi Province is researched, which was expected to provide a reference for this kind of mountain torrent disaster and safety of river basin water project. Through field investigation and laboratory test, Luzhuang debris flow of Huanglong County in Jiujiang City was selected as an example, and the development characteristics and kinetics characteristics were analyzed. The main channel length of the debris flow is about 6. 25 km, the catch- ment area is 4. 270 km2. The supply of source was comparatively abundant（ about 62.46 × 104 km3 ）, the longitudi- nal gradient is 524. 1‰ and the height differences is 1160m, the topography is easy to catchment. The process of rainstorm-induced debris flow in the study area can be divided into 4 stages ： debris flow-source formation ; loose accumulation carry; older landslide resurrection and debris flow initiation.
出处
《灾害学》
CSCD
2017年第2期154-158,共5页
Journal of Catastrophology
基金
江西省自然科学基金“江西红壤砂岩区暴雨诱发型深基座滑坡形成机理研究”(20161BBG70051)
江西省教育厅科技项目“降雨型砂岩区类土质滑坡GMD预测模型研究”(GJJ151124)
南昌工程学院2015年教改重点教改课题(2015JG001)
关键词
鄱阳湖流域
泥石流
形成机制
动力特征
卢庄沟
江西省修水县
Poyang Lake Basin
debris flow
formation mechanism
dynamic characteristics
Luzhuang Ditch
Xiushui County in Jiangxi Province
