泥石流研究述评

泥石流这一特殊的二相流体是山区常见的一种自然灾害,一般可分为稀性泥石流(颗粒碰撞及离散力起主导作用)和粘性泥石流(粘性力起主导作用)两大类。本文概略地评述了泥石流的几个问题,即泥石流形成学、分类学、动力学等,指出急需解决的问题有泥石流汇流理论、泥石流阻力规律等。文中还根据近年来的动态和趋向,推断更加深入的理论研究和以数学模型为核心的泥石流流域管理模式将会成为泥石流学科发展的主要方向。

A REVIEW ON THE RESEARCH OF DEBRIS FLOW

The debris flow is a common natural disaster in the mountainous regions. It is a special two-phase fluid. In general, there are two types of debris flows: low-viscous debris flow (where collision and energy dissipation are dominated) and viscous debris flow (where viscosity is dominated) . In this paper, the formation, the classification and the dynamics of debris flow are discussed, some urgent problems are pinpointed, which include the theory of confluent flow and the law of fluid resistance. It is predicted from the recent developments in debris flow studies that the further theoretical research and the management of debris flow basins on the basis of mathematical models will be the main trend of the debris flow researches.