Analysis of Displacement Field of Shallow Buried Biased Tunnel with Small Clear Distance

2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR) Pub Date : 2021-11-06 DOI:10.1109/ICHCESWIDR54323.2021.9656272

Jianwu Gong, Chao Zhang

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Abstract

The geological conditions and rock formations used to build tunnels are often complex. Therefore, in order to ensure the safety of construction, it is very important to analyze the stability of surrounding rock in advance. In this paper, based on the tunnel process, the monitoring data are analyzed firstly. The variation law of tunnel vault settlement and horizontal convergence is obtained. Secondly, the numerical simulation method is used to simulate the construction process of shallow buried tunnel with bias and small clear distance. The interaction between the construction of left and right tunnel and the distribution characteristics of surrounding rock displacement field are obtained. Finally, the simulation results are compared with the monitoring data. The simulated values are smaller than the monitored values on the whole, but the overall variation rule is basically the same.

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小净距浅埋偏压隧道位移场分析

用于建造隧道的地质条件和岩层通常是复杂的。因此，为了保证施工安全，提前对围岩稳定性进行分析是非常重要的。本文首先根据隧道施工过程，对监测数据进行了分析。得到了隧道拱顶沉降和水平收敛的变化规律。其次，采用数值模拟的方法对偏浅埋小清距隧道的施工过程进行了模拟。得到了左右隧洞施工与围岩位移场分布特征之间的相互作用。最后，将仿真结果与实测数据进行了比较。模拟值总体上小于监测值，但总体变化规律基本一致。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)

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