Effects of pipe roof supports and the excavation method on the displacements above a tunnel face

被引：92

作者：

Hisatake, M. ^{[1
]}

Ohno, S. ^{[1
]}

机构：

[1] Kinki Univ, Fac Sci & Engn, Dept Civil & Environm Engn, Higashiosaka, Osaka 5778502, Japan

来源：

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY | 2008年 / 23卷 / 02期

关键词：

excavation robot; pipe roof supports; excavation methods; centrifugal model tests;

D O I：

10.1016/j.tust.2007.02.002

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Centrifugal model tests are conducted in order to clarify the effects of pipe roof supports and the excavation method on the displacements above a tunnel face. The excavation process must be taken into account when estimating the displacements. Therefore, an excavation robot is newly developed which is three-dimensionally controlled by computer programs and is able to excavate the tunnel face in arbitrary shapes. The robot can accurately simulate such excavation methods as the full-face excavation method and the ring-cut excavation method. The difference in displacements between the two excavation methods is discussed in terms of the existence or the nonexistence of pipe roof supports. The results of the model tests show the quantitative effects of the ring-cut excavation method and clarify that the method decreases the ground displacements remarkably. The model tests also indicate that the maximum settlement of a ground excavated by the full-face excavation method with pipe roof supports is one fourth of that without them. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：120 / 127

页数：8