Home Journals Articles Updates About
CN
image
收藏切换
A Refined Blasting Pretreatment Method for Boulders and Bedrock Traversed by Shield Tunnels in Sea Area
收藏切换
PDF
Hai-xia WEI1, You-quan CUI1, Jian-fu CHEN2, xiao-lin YANG1, Huai-bao CHU1, Jie ZHU1, Shi-hai CHEN3
Blasting | 2025, 42(1) : 81 - 88
Less
收藏切换
Blasting | 2025, 42(1): 81-88
• BLASTING IN ORE AND ROCK •
A Refined Blasting Pretreatment Method for Boulders and Bedrock Traversed by Shield Tunnels in Sea Area
Full
Hai-xia WEI1, You-quan CUI1, Jian-fu CHEN2, xiao-lin YANG1, Huai-bao CHU1, Jie ZHU1, Shi-hai CHEN3
Affiliations
  • 1.School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China
  • 2.China Railway 14th Bureau Group Co., Ltd., Jinan 250000, China
  • 3.College of Civil Engineering, Huaqiao University, Xiamen 361021, China
Published: 2025-07-20 doi: 10.3963/j.issn.1001-487X.2025.01.010
Outline
收藏切换

In constructing shield tunnels in a sea area, large-sized boulders and bedrock are often encountered, necessitating pretreatment via blasting. The effectiveness of blasting pretreatment is crucial for the regular excavation of shield machines. Based on Xiamen Metro Line 2 project, a refined blasting pretreatment method for boulders and bedrock in shield tunnels under the sea area is proposed. The method comprehensively considers overburden conditions, blasting fragmentation indexes, and marine biological safety standards. Specific steps include designing blasting parameters, calculating powder factor, determining single-hole charges and average block size, designing charge structures and initiation networks, predicting the distribution of blasting fragments, and optimizing the blasting program to minimize ecological impact. Field application results indicate that post-blasting fragment sizes are within 30 cm, meeting the size requirements for the shield machine. The shield machine could excavate smoothly through the blasting pretreatment section, with excavation parameters similar to those in regular sections. The proposed method achieved a refined, ecological, efficient and safe blasting construction in the sea section containing boulders and bedrock.

shield machines in the sea area  /  boulders  /  bedrock  /  blasting pretreatment  /  fragments
Hai-xia WEI, You-quan CUI, Jian-fu CHEN, xiao-lin YANG, Huai-bao CHU, Jie ZHU, Shi-hai CHEN. A Refined Blasting Pretreatment Method for Boulders and Bedrock Traversed by Shield Tunnels in Sea Area[J]. Blasting, 2025 , 42 (1) : 81 -88 . DOI: 10.3963/j.issn.1001-487X.2025.01.010
Funding
Less
  • National Key Research and Development Program of China(2023YFC2907200)
Appendix
Less
Year 2025 volume 42 Issue 1
PDF
124
55
Cite this Article
BibTeX
Article Info
doi: 10.3963/j.issn.1001-487X.2025.01.010
  • Receive Date：2024-05-12
  • Online Date：2026-03-18
  • Published：2025-07-20
Article Data
Affiliations
History
  • Received：2024-05-12
Funding
National Key Research and Development Program of China(2023YFC2907200)
Affiliations
    1.School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China
    2.China Railway 14th Bureau Group Co., Ltd., Jinan 250000, China
    3.College of Civil Engineering, Huaqiao University, Xiamen 361021, China

Corresponding:

CUI You-quan(1996-), male, master degree candidate, mainly engaged in research on underground and tunnel engineering technology, (E-mail) .
References
Share
https://castjournals.cast.org.cn/joweb/bp/EN/10.3963/j.issn.1001-487X.2025.01.010
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62199257
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House