Model Tests of Catastrophic Initiation Mode and Transport Mechanism of Viscous Mudflows
Model Tests of Catastrophic Initiation Mode and Transport Mechanism of Viscous Mudflows
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粘性泥石流灾害引发模式及输送机制模型试验
DOI：
10.2174/1874149501408010439
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发表时间：
2014-12
期刊：
影响因子：
--
通讯作者：
王之君
中科院分区：
文献类型：
--
作者：
王之君
以往对泥石流起动机理的研究大多采用传统的线性分析、统计分析、定性分析和单因素分析等方法，取得了一些有意义的成果。但实际上，大量的野外观测分析表明，泥石流的起动可能是一个受多种影响因素影响的复杂的非线性过程，其起动模式呈现出突发性和缓慢性等典型的复杂特征，至今尚无法解释清楚。也就是说，如果能够调控泥石流的起动条件，泥石流的防治应该能够取得实际效果。基于突变理论，对天然泥石流中具有代表性的粘性泥石流的起动、输运和沉积特性进行了分析、描述，并在自行设计的流动模型试验装置上进行了验证。结果表明，粘性泥石流的起动模式属于慢起动模式，其输运机制符合尖点突变模型的一般特征。这不仅对山区多发的粘性泥石流的预报和防治具有重要意义，而且对丰富泥石流起动机理的非线性理论体系也具有重要意义。
Most previous studies on the initiation mechanism of debris flows have achieved some significant results by means of traditional linear methods, statistical analyses, and qualitative and single-factor analyses. In fact, however, a large number of field observation analysis indicate that the initiation of debris flows may be a complicated nonlinear process subject to many influencing factors, with its initiation mode showing typical and complex characteristics such as sudden happening and slow happening and so on, which we could not explain clearly till now. In other words, if the initiation conditions could be regulated and controlled, the prevention and control of debris flows should achieve the practical effect. Based on catastrophe theory, the characteristics and mechanisms of the initiation, transport, and sedimentation associated with viscous mudflows, which can be taken as representative of natural debris flows, are analyzed, described, and verified using flowing model tests on the well-designed test apparatus. The results show that not only does the initiation mode of viscous mudflows belong to the slow-starting mode, but also its transport mechanism is in accordance with the general characteristics of the cusp catastrophe model. This is of great significance not only with regard to the forecasting and controlling of viscous debris flows that occur frequently in mountainous areas, but to the enriching of the nonlinear theoretical system of debris flows initiation mechanism as well.
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DOI：
10.11867/j.issn.1001-8166.2008.05.0524
发表时间：
2008-05
期刊：
Advances in Earth Science
影响因子：
--
作者：
Yu Bin
通讯作者：
Yu Bin
影响因子：
4.9
作者：
H. Whitney
通讯作者：
H. Whitney
影响因子：
3.7
作者：
Douce RW;Aleman W;Chicaiza-Ayala W;Madrid C;Sovero M;Delgado F;Rodas M;Ampuero J;Chauca G;Perez J;Garcia J;Kochel T;Halsey ES;Laguna-Torres VA
通讯作者：
Laguna-Torres VA
影响因子：
--
作者：
R. M. Iverson
通讯作者：
R. M. Iverson
DOI：
10.1073/pnas.16.11.777
发表时间：
1930-11
影响因子：
11.1
作者：
M. Morse
通讯作者：
M. Morse