In view of large scale pierce surveys demand for error determinate accuracy,this paper,starrting with adjustment of condition equations,gives out a group of strict formula which can be applied to traverse control over piercing error determinate.

• 鉴于大型贯通测量对误差预计精度的要求，从条件平差角度入手，推导出一组适用于地面控制导线对贯通面影响的误差预计严密公式。