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波振沟位于四川省凉山州喜德县境内孙水河左岸,属于川南红层地区典型沟谷型泥石流沟。通过工程地质调查与遥感影像解译,研究了该泥石流形成条件和机理,获取了泥石流动静力学参数。调查研究表明:(1)波振沟流域地貌正处于壮年期发育阶段;(2)泥石流容重1.64g/cm3,属于过渡(偏稀)性泥石流;(3)波振沟流域内还存在大量崩滑体及沟道松散堆积体,松散物源近4×105m3,在强降雨作用下容易启动泥石流,建议加强综合防治。该研究对砂泥岩互层地区泥石流形成机理的认识有一定帮助,对波振沟泥石流防治具有参考价值。
The wave vibration ditch is located on the left bank of Sunshui River in Xide County, Liangshan Prefecture, Sichuan Province, and belongs to the typical valley-type debris flow ditch in the southern part of southern Sichuan. Through the engineering geological survey and interpretation of remote sensing images, the formation conditions and mechanism of the debris flow were studied, and the parameters of debris flow hydrodynamics were obtained. The investigation and research shows that: (1) the landform in Bopudougou watershed is in the stage of development of the mature period; (2) the weight of debris flow is 1.64g / cm3, which belongs to transitional (dilute) landslide; (3) Loose bodies and slides loose body, loose material source nearly 4 × 105m3, easy to start under heavy rainfall debris flow, it is recommended to strengthen the comprehensive prevention and treatment. The study is helpful to understand the formation mechanism of debris flow in interbedded sandstone and mudstone, and is of reference value to the prevention and control of debris flow in the basin.