ISSN 2096-4498
CN 44-1745/U
ISSN 2096-4498
CN 44-1745/U
Technology for Methane Releasing in Shield Tunneling Through Qiantang River Formation: Case Study on Line 1 of Hangzhou Metro
Received date: 2012-03-06
Revised date: 2013-02-01
Online published: 2013-03-23
Line 1 of Hangzhou Metro passes through Qiantang River formation, which contains large amount of methane. Therefore, there is great risk in shield tunneling. The methane is mainly located at the junction between the silty clay and silty sand. Methane releasing trials are made so as to understand the occurrence characteristics of the methane and, in turn, to make preparations to take countermeasures. During the shield tunneling, no methane outburst occurs, which demonstrates that the methane releasing is effective.
Key words： Line 1 of Hangzhou Metro; methane; occurrence; release; blowout
XU Guoqing , YUE Fengtian , WANG Hongqi , ZHANG Ronghui . Technology for Methane Releasing in Shield Tunneling Through Qiantang River Formation: Case Study on Line 1 of Hangzhou Metro[J]. Tunnel Construction, 2013 , 33(3) : 247 -251 . DOI: 10.3973/j.issn.1672-741X.2013.03.014
/
| 〈 |
|
〉 |