中文摘要：

设计了宏观触土曲面准线为圆弧、抛物线和仿生曲线的推土板。通过室内土槽试验测试了3种推土板的工作阻力。建立了3种推土板宏观触土曲面的参数方程，并完成了3种触土曲面第一类基本量E、F和G，曲面第二类基本量L、M和N内蕴几何量计算。得知第一类基本量中的E值和第二类基本量中，J值是影响触土曲面工作阻力的重要因素。仿生曲线式推土板触土曲面E值和￡值具有较复杂变化趋势，也相应获得了较低的工作阻力。圆弧式推土板则具有相对较大的工作阻力。

英文摘要：

The intrinsic geometrical quantity of macroscopic soil-engaging surface of bulldozing plate plays a decisive role for its geometrical and dynamic characteristics. Three forms of macroscopic soil- engaging surfaces with the arc, parabola and bionic curve were designed and manufactured. The working resistance was measured with a laboratory soil bin. The intrinsic geometrical quantities of the macroscopic soil-engaging, including the first base quantity （E, F, G） and the second base quantity （L, M, N）, were calculated based on the parametric equations of the three macroscopic soil-engaging surfaces. It was discovered that E value in the first class of the base quantity and the value of L in the second class of the base quantity were important factors influencing the working resistances of soil-engaging surfaces. The value of E and L of the bionic soil-engaging surface possessed more complex trend, also obtained lower working resistance accordingly. However, the relatively simple arc bulldozing plate had a relatively large working resistance.