The speed of soil delivering and resistance of augerdrill are analyzed theoretically and their formulae are presented.
对螺旋钻具输土速度与阻力进行理论分析，给出了输土速度公式和阻力公式。
2
Combined with engineering example the characteristics of augerdrill and construction defects for special strata are discussed.
结合工程实例，论证了旋挖钻机的特点及在特殊地层的施工缺陷。
3
Based on the machine development, a research and analyses of augerdrill bits with different kinds of drill tips and soil cut blade angles were carried out in tree planting field.