Experiences of utility microtunnelling in Irish limestone, mudstone and sandstone rock

被引：22

作者：

Sheil, Brian B. ^{[1
]}

Curran, Brien G. ^{[2
]}

McCabe, Bryan A. ^{[3
]}

机构：

[1] Univ Oxford, Dept Engn Sci, Oxford OX1 3PJ, England

[2] Ward & Burke Construct Ltd, Kilcolgan, Galway, Ireland

[3] Natl Univ Ireland, Coll Engn & Informat, Galway, Ireland

来源：

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY | 2016年 / 51卷

关键词：

Tunnelling; MTBM; Rock; Case history; Microtunnel; PERFORMANCE; TBM; TUNNEL; PREDICTION; FRICTION; FORCES; TESTS;

D O I：

10.1016/j.tust.2015.10.019

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

There is currently no published guidance on the excavatability of Irish rock for microtunnelling applications. In this paper, new data and experiences of microtunnelling through rock (using a Herrenknecht AVN slurry shield machine with a rock head) at five Irish sites are presented and interpreted. The rock type is limestone at three of the sites, with mudstone/conglomerate and sandstone at the other two sites. The jacking forces are separated into face and friction (between the concrete pipe and rock) components. Useful relationships have been established between the excavatability index and the uniaxial compressive strength and brittleness index of rock. Cutter head wear is discussed in the context of rotational distance travelled and rock strength. In addition, the suitability of a number of prediction models documented in the literature for the prediction of microtunnel boring machine performance in Irish rock is examined. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：326 / 337

页数：12

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