规则齿形不连续面的变形特性及其定量评价

以研究不连续面的变形特性为目的，采用双曲线函数作为描迷不连续面剪切位移曲线的本构式，讨论了表征剪切位移曲线形态的关键因素，即：公式中的系数A，B．根据系数A，B的物理意义，分析了它们与垂直应力比、不连续面的起伏角i以及不连续面的剪切面积之间的关系．同时，又将双曲线函数的模拟曲线与试验曲线进行了比较．由于模拟曲线能较为正确地描述初始剪切刚度以及峰值剪应力，使它能较为理想地表现剪切位移曲线，进而使该定量的评价方法具有实际的使用价值．

Analytical and numerical solutions for shear mechanical behaviors of structural plane

The original descriptive model of shear stress and shear displacement only reflects the stress deformation characteristics of plastic structural plane.The index model was revised and piecewise index model was built to describe the stress deformation characteristics of plastic structural plane and brittle structural plane.The relation of stress and strain to the failure mode of structural plane considering the effect of its shape was investigated,and a model which could reflect the relation between undulate angle and shear strength was built.The result indicates that structural plane presents nonlinear characteristics,specifically,the value of undulate angle,as well as corresponding shear strength,becomes larger as the normal stress decreases.

深海表层海泥模拟及地面力学特性研究

深海表层海泥车辆地面力学特性是开发大洋矿产资源-多金属结核采矿车的理论基础。该文深入研究深海表层海泥样品和陆地二种膨润土的物理性质,确定深海表层模拟海泥的原料,分析深海表层海泥和模拟海泥的物理力学参数,配制出具有极高含水量、极小内摩擦角、高液限、高塑性、大孔隙比、低强度和低重度等深海表层海泥特性的模拟海泥,根据车辆地面力学理论,开展多种平板在垂直方向上的海泥载荷-沉陷实验和不同节距、不同齿高、不同齿形和不同齿宽的履带齿板在水平力作用下的海泥剪切应力-位移实验,深入分析实验数据,国内首次提出基于Bekker理论和Reece理论的深海表层海泥的二种载荷与沉陷特性,及深海表层海泥的剪切应力和位移特性,深入分析我国多金属结核采矿车在深海表层海泥上行走时履带牵引力与打滑率特性,为进一步开发海底采矿车提供了设计依据和理论。