岩屑床层移运动内在机理的分析

环空内底层的岩屑床作层移运动，因其浓度较高而又属分散相固休，故其性质和连续分子、单颗岩屑均有很大差异.本文根据能量原理，分析了岩屑颗粒层与层之间相互摩攘、碰撞及流体的粘滞作用等因素对碰撞的倾率和动量传递、层移岩屑间离散力和摩擦力等内应力的影响关系，这些结论对于认识和研究层移岩屑床宏观现律是十分重要的.

TRANSPORT MECHANISM OF BED-LOAD CUTTINGS

The transport of cuttings bed in annulus bottom is bed-load sheared layer. Because of its high concentration and dispersed particles，the properties of cuttings bed are much differ-ent from continuous molecules and single particles. Based on the energy principle，the paper analyzes the influence of the factors of the friction and collision among cuttings particles andthe viscous resistance of ftuid(mud)on the collision times，moment exchange and dispersed forces. These conclusions are very important for studyuing and understanding the transport rule of bed-load cuttings.