滑坡转化泥石流起动研究现状

An Overview of Transformation of Landslide into Debris Flow

滑坡转化泥石流起动研究是基础前沿性研究 ,直接关系到泥石流其他方面研究的进展 ,特别是预测预报。分析了国内外在滑坡转化泥石流起动研究方面的进展 ,分别从野外观测研究、实验设计和理论分析三个方面进行了阐述。重点介绍了目前国内外在理论上的进展 ,并进行了初步评价。通过讨论 ,提出了深入研究的思路与急需解决的问题 。

The research of transformation of landslide into debris flow is fundamental in debris flow study, especially for the prediction of debris flow disasters. This paper provides an overview of the recent studies both at home and abroad in this very topic.Main achievements include: 1) A great collection of first-hand data of field investigation; 2) parameters acquired by field observation and measuring; 3)Field and indoor experiments that have employed new technical ways and generalized some primary factors of soil samples. 4) Some aspects revealed regarding the realization of transformation from landslide to debris flow. Despite these, long-term monitoring of characteristic parameters concerning soil strength is wanted and experiments should be emphasized on wide grain-size composition and the limitation of theories derived from sand test. Because of the complexity of soil an integrated technical way is needed, combining methods both microscopic and macroscopic, linear and nonlinear, black-box and white-box. At present, there are many problems to be solved, such as how to ascertain the critical point of the transition from landslide to debris flow. Answers to these problems will be helpful for improving the precision of debris flow prediction.