The applicability of wireless sensor network technology in tunnel works is studied, and a new displacement monitoring technology based on material mechanics is proposed.Meanwhile,displacementdip angle monitoring equation is established by combining the different monitoring positions. The applicability and stability of the wireless sensor network technology are testified by indoor segment loading tests. Rational monitoring distance and monitoring precision are decided by using fire disaster simulation test by means of Smartfire. In the end, related indexes of hardware and layout of wireless sensor network are proposed.