Peck及其修正公式在类矩形隧道施工地表沉降预测中的应用

Application of Peck Formula and Its Modified Versions in Ground Settlement Prediction during Quasi-Rectangular Tunnelling

在众多预测隧道开挖引起的地层沉降的经验方法中,Peck于1969年提出的高斯方程最为简便,也是目前应用最广的方法。Peck公式的建立是基于有限地区的实测资料,因此公式应用前首先应该进行基于当地实测资料的验证。目前国内尚没有类矩形隧道的施工实例,文章基于Peck公式和双圆修正Peck公式的地表沉降计算方法,提出了类矩形盾构隧道施工地表沉降的预测方法,利用此方法可以在施工前对地表沉降进行预测。

Gauss equation proposed by Peck in 1969,i.e.Peck formula,is one of the simplest and the most widely used methods to predict the ground settlement induced by tunnelling.Since the formula was established based on the measured data of limited areas,it should be verified by local data before being applied.Considering that there is no case of quasi-rectangular tunnelling in China,a prediction method was put forward in this paper for the ground settlement of quasi-rectangular shield tunnelling based on the Peck formula and its modified versions for DOT.