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Ground surface settlements due to construction of closely-spaced twin tunnels with different geometric arrangements

机译：由于几何形状不同的紧密双胞胎隧道的建造，地表沉降

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摘要

This paper examines the ground surface settlement profiles due to the construction of closely-spaced twin tunnels using the shallow tunnelling method. In the concerned zone, where the twin-tunnelling was performed in stacked and offset arrangements, the ground surface settlements of in total 18 cross-sections were continually recorded during construction. To cater for different conditions of the twin tunnels in the concerned zone, partial face, full face and forepoling reinforcement schemes were adopted. The recorded surface settlements and settlement troughs of three typical sections are reported and illustrated. The surface settlement troughs induced by each of the twin tunnels are fitted by the Gaussian function. The parameters that characterize the surface settlement troughs induced by each of the twin tunnels, such as the maximum settlement, percentage of ground loss, trough width and empirical trough width parameter are presented and compared. (C) 2015 Elsevier Ltd. All rights reserved.
机译：本文研究了使用浅埋隧道法施工密集双胞胎隧道引起的地表沉降剖面。在相关区域中，双隧道以堆叠和偏置的方式进行，在施工期间连续记录了总共18个横截面的地面沉降。为照顾有关地区双隧道的不同情况，我们采用了局部工作面，全面工作面及前推力加固方案。报告并说明了三个典型部分的记录的地面沉降和沉降槽。高斯函数拟合由每个双隧道引起的表面沉降槽。提出并比较了表征每个双隧道引起的地表沉降槽的参数，例如最大沉降量，地面损耗百分比，槽宽和经验槽宽参数。 （C）2015 Elsevier Ltd.保留所有权利。

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