Technologies to Release Jammed Earth Pressure Balanced (EPB)  Shield and Its Lessons

doi:10.3973/j.issn.1672-741X.2012.02.022

Tunnel Construction ›› 2012, Vol. 32 ›› Issue (2): 239-244.DOI: 10.3973/j.issn.1672-741X.2012.02.022

• wenzhang • Previous Articles Next Articles

Technologies to Release Jammed Earth Pressure Balanced (EPB) Shield and Its Lessons

LI Hui, LIU Yintao

(Technology Center of China Railway Tunnel Group, Luoyang 471009, Henan, China)

Received:2011-10-20 Revised:2012-02-15 Online:2012-04-20 Published:2012-05-03

Abstract

Abstract: An EPB shield used in the construction of No. 6 line of Chongqing Metro was jammed when boring in hard rocks. Technologies, including removing the rock mass above the shield by means of blasting, extending the cutting tools and enlarging the excavation diameter, and backfill grouting for the voids created by blasting, are adopted to release the jammed shield. Recommendations, such as TBMs with copy cutters should be used in hard rock conditions and regular inspection should be made on the cutter heads, are proposed to avoid shield jamming.

Key words: EPB shield, jamming, jamming releasing technology, blasting, grouting 

LI Hui, LIU Yintao. Technologies to Release Jammed Earth Pressure Balanced (EPB) Shield and Its Lessons[J]. Tunnel Construction, 2012, 32(2): 239-244.

/ Recommend

[1]	SUN Honglin, LIU Tie, LIU Tiehua, HUA Xirui, CAI Sheng, ZHOU Wei. Development Trend and Practice of Tunnel Advance Geological Prospecting Methods [J]. Tunnel Construction, 2026, 46(S1): 9-28.
[2]	HU Jianjun, GONG Min, ZHANG Rubo, WU Xiaodong, ZHANG Pinghua, ZHANG Tao, PENG Guoqing, WU Lijun. Calculation Method for In-Hole Segmented Control Blasting Delay Parameters of Underground Cavern Deep-Hole Bench Based On Electronic Detonators [J]. Tunnel Construction, 2026, 46(S1): 226-235.
[3]	WANG Shilong, GAO Baobin, WANG Xinzhuang, CAO Yongjing, ZHANG Changjuan, YANG Dongjie. Cutterhead Jamming Mechanism and Prevention Strategy for an Open-Type TBM Crossing Collapse Columns [J]. Tunnel Construction, 2026, 46(S1): 348-360.
[4]	WU Haosheng, LIU Jianguo, FU Yi, ZHANG Jianqiang, GUO Zhihui, ZHANG Ming, MULATI· Jueraiti, ZENG Lingjiang, DU Jiaxin, LIU Tuojiang. Development and Field Testing of Tunnel/Roadway Blasting-Induced CO Photocatalytic Purification Device [J]. Tunnel Construction, 2026, 46(S1): 361-374.
[5]	ZHOU Chuanchuan, XIA Wenjie, WANG Jihong, JIANG Shuang, WANG Shugang, WU Yuanjin, LUO Zhanfu, LIU Qijun. Optimal Deployment of CO Monitoring Sensors for Blasting Operations in Drill-and-Blast Tunnels [J]. Tunnel Construction, 2026, 46(S1): 519-528.
[6]	LIN Chungang, LI Jielin, ZHOU Zhibin, YANG Chengye, ZHANG Danfeng. Development of Intelligent Construction System and Its Management Platform for Railway Tunneling With Drilling and Blasting Method [J]. Tunnel Construction, 2026, 46(9): 1846-1860.
[7]	LI Tengfei, LI Hongbing, ZHOU Zilong, YANG Zhilong, ZHANG Chengjiao, LENG Zhendong, TIAN Shuilong. Borehole-Wall Pressure Calculation and Damage Mechanism of Tunnel Smooth Blasting Using Bulk Explosives With Eccentric Charging [J]. Tunnel Construction, 2026, 46(9): 1934-1949.
[8]	LIU Binyuan, LUO Yanbin, TAN Chang, YANG Zhenxing, LYU Qianqian, CHEN Zhigang, LIU Weiwei. Research and Application of a Real-Time Intelligent Early Warning Model for TBM Jamming Risk Based on Transformer Multi-Task Learning [J]. Tunnel Construction, 2026, 46(8): 1729-1739.
[9]	SUN Zeyuan, ZHAO Cheng, XING Jinquan, JIA Ning, XU Haining. Analytical Elastic Stress Solution for Lining-Surrounding Rock Structure of a Compressed Air Energy Storage Cavern Considering Drilling-and-Blasting Excavation Damage [J]. Tunnel Construction, 2026, 46(7): 1483-1492.
[10]	YANG Ping, LI Jinghao, ZHANG Ting. Application Status and Prospects of Artificial Ground Freezing Technology in China [J]. Tunnel Construction, 2026, 46(5): 895-918.
[11]	ZHAO Kai, XIA Bing, WANG Lichuan, WANG Haiyan, ZHANG Xuemin, ZHANG Junru. Zonal Coupling Analysis on Dynamic Effect of Soil- Rock Composite Strata-Structure System Induced by Tunnel Blasting [J]. Tunnel Construction, 2026, 46(5): 970-984.
[12]	XU Bangshu, ZHU Wanxin, SUN Weiliang, LIANG Long, ZHANG Wenxi, JIANG Peng. Intelligent Recognition Method for Tunnel Blasting Half-Holes Based on Deep Learning [J]. Tunnel Construction, 2026, 46(4): 694-703.
[13]	XU Qingsong, SHI Aijun, CHEN Bin, MA Shuqi, ZHAO Yan. Full Acoustic Waveform Signal Processing for Analysis of Blasting Damage of Surrounding Rock in Tunnels [J]. Tunnel Construction, 2026, 46(2): 273-286.
[14]	PAN Yue, XIE Tao, LIU Yongsheng, GAO Pan, YANG Zhenxing. Intelligent Identification and Prevention of TBM Jamming in Hard-Rock Fractured Zones [J]. Tunnel Construction, 2026, 46(2): 383-393.
[15]	HU Junwei. Composite Rock Fragmentation Technology Using Blasting Presplitting and Disc Cutters for Highly Intact and Extremely Hard Rock [J]. Tunnel Construction, 2026, 46(2): 394-405.

Technologies to Release Jammed Earth Pressure Balanced (EPB) Shield and Its Lessons

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments