浅埋暗挖隧道地表沉陷计算方法

Surface Subsidence Calculating Method for Shallow Darkling Tunneling

本文在浅埋暗挖隧道开挖一支护过程的等效结构概念基础上,提出了一套可用于隧道纵、横剖面上地表沉陷曲线拟合的计算方法。计算中可以考虑近似对称、非对称等问题,并且所用参数物理力学含义明确、形式完备。算例表明本文给出的计算公式有较高的精度和广泛的适用性。

Basing on the conception of equivalent structure for excavating- lining process in shallow darkling tunnel,a set of calculating procedure is established which can be used in designing longitudinal and cross section.In the method the problem of approximate symmetry,nonsymmetry and so on are considered. The parameters used in the equations are selected properly and, have definite mechanical implications.Examples show that this method provides higher precision and has wider adaptability.