TBM tunneling in marble rock masses with high in situ stress and large groundwater inflow: a case study in China

被引：27
作者：
Gong, Q. M. [1 ]
Yin, L. J. [2 ]
She, Q. R. [1 ]
机构：
[1] Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
[2] Ecole Polytech Fed Lausanne, LMR, CH-1015 Lausanne, Switzerland
来源：
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT | 2013年 / 72卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Tunnel boring machine (TBM); In situ stress; Groundwater inflow; Marble; TBM optimization;
D O I：
10.1007/s10064-013-0460-0
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Two of four headrace tunnels in the Jinping II hydropower project were constructed using tunnel boring machines (TMBs). The geology along the tunnel alignment is dominantly massive to highly fractured marble and the maximum overburden depth is 2,525 m. The paper discusses the problems encountered during the TBM tunneling, including instability of the tunnel wall and face induced by high in situ stresses, high-pressure groundwater inflows and excessive cutter and cutterhead damage. Measures taken to overcome these problems involved modifications to both the machines and the mode of operation as well as changes to the support parameters.
引用
收藏
页码：163 / 172
页数：10
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