Taking Xiaomansa River Tunnel along Yuanjiang-Mohei Expressway in Yunnan Province for example, 12 tunnel slope monitoring points and several monitoring items in tunnel are arranged.

• 以云南元（江）磨（黑）高速公路小曼萨河隧道为例，对隧道边坡变形进行三维监测及洞内变形监测，确定该隧道边坡三维变形的基本模式。