在建筑物轴线定线和变形观测中,采用角度前方交会法(以下简称前方交会)的时候,我国沿用柳茨或契巴塔廖夫(以下简称契)的公式来估算前方交会的预期精度,并依照他们的结论布置点位。柳茨对前方交会的纵向误差和横向误差进行了较详细的分析;契对前方交会的最佳精度进行了研究。但他们的结论是不精确的。 In the observation of the alignment and deformation of the building axis, when using the angle forward intersection method (hereinafter referred to as forward intersection), China uses the formula of Liuts or Chibatalev (hereinafter referred to as the deed) to estimate the expected accuracy of the forward rendezvous. And arrange points according to their conclusions. Liutz conducted a detailed analysis of the longitudinal and lateral errors of the forward rendezvous; the study of the best accuracy of forward rendezvous was studied. But their conclusion is inaccurate.