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林斌,张友谊,罗珂,黄成,袁亚东
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LIN Bin,ZHANGYouyi,LUO Ke,HUANG Cheng,YUAN Yadong
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摘要: 震后沟道松散物质起动并形成泥石流的一次性固体冲出量是衡量泥石流规模以及后期泥石流治理的重要指标。因此利用现有的野外资料,考虑不同沟床粗糙程度、沟道坡度和降雨强度3种影响因素,开展室内模型实验,研究其一次性固体冲出量的规律,得到了青林沟泥石流的一次性固体冲出量的计算模型。通过与历史泥石流冲出量进行验证和与其他计算模型进行比较,发现该模型具有预见性、准确性和便捷性的特点,同时也为该地区类似泥石流防灾减灾起到一定的指导作用。
关键词: 沟道松散物质, 泥石流起动模型, 模型试验, 一次性固体冲出量, 青林沟
Abstract: A one-time runout volume of debris flow formed after earthquake is an important index to measure the scale of debris flow and the control of debris flow in the future. Therefore, using the existing field data and taking three influencing factors into account (ditch bed roughness degree, ditch slope, rainfall intensity), the laboratory model experiment was carried out to study the law of one-time solid runout amount of Qinglin gully and its calculation model was obtained. Through verification with historical debris flow and comparison with other calculation models, it is found that this model has the features of predictability, accuracy and convenience, which can play a guiding role in disaster prevention and reduction of similar debris flows in this region.
Key words: ditch loose material, debris flow start-up model, model test, a one-time runout volume, Qinglin Ditch
林斌,张友谊,罗珂,黄成,袁亚东. 沟道松散物质起动模型试验及冲出量预测——四川省以北川青林沟为例[J]. 人民长江, doi: 10.16232/j.cnki.1001-4179.2019.05.021.
LIN Bin,ZHANGYouyi,LUO Ke,HUANG Cheng,YUAN Yadong. Model test of start-up of loose material in gully and runout volume prediction:case of Qinglin ditch in Sichuan Province[J]. , doi: 10.16232/j.cnki.1001-4179.2019.05.021.
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http://www.rmcjzz.com/CN/Y2019/V50/I5/113