Based on releasing rate of lagging displacement, the Bernoulli equation ofdisplacement rate for excavation work of tunnel, foundation pit etc. has been developed, aconverse curve of displacement ageing was obtained.

• 本文在提出滞后位移释放率的基础上，建立了基坑隧道等开挖工程的位移速度贝努利方程，从而得到位移时效反弯曲线。