隧道施工、运行中的实际位移是空间向量，在现有位移监测资料分析中，各方向位移一般单独建模，为合理综合位移多方向的监测信息，更全面、真实掌握隧道位移发展规律，在分析空间位移向量构造形式的基础上，对监测模型的结构进行了探讨，根据位移空间向量具有多变量形式的特点，采用多因变量逐步回归方法建立隧道位移空间向量监测模型，并通过计算过程和实例对隧道多因变量位移监测模型和单方向位移监测模型的区别加以了说明。

The displacement of tunnel during construction and operation is space vector. Usually, the displacement monitoring data in different direction are analyzed to establish the monitoring model separately. In order to know the developing rule of tunnel displacement more completely and truly, base on the analysis of displacement space vector formation, the monitoring model form has been discussed. Then the multidependent variable stepwise regression is used to establish the monitoring model of tunnel displacement space vector, and its calculation progress and instance have been presented, and the differences from single direction displacement model are explained.