In this dissertation we analyse the feasibility ofthe helicoids used for soil flatting, and discusse the principle of thedouble rotary helicoids flatting machine.

• 通过对平整作业中土壤颗粒的受力分析和运动分析，文章进一步建立了双轴螺旋平整机的土壤输送量计算公式及平整计算公式。