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Carbon Emission Reduction Analysis of Producing Synchronous Slurry from Shield Muck Based on Life Cycle Assessment: A Case Study on the Nanzezhuang-Tangzhuang Section of Suzhou Metro Line 8
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Yu-jun DU1, 2, Yan-jia ZHOU3, Ying-jing LIU4, Wen-tao LI1, 2, *
Science Technology and Engineering | 2025, 25(22) : 9542 - 9549
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Science Technology and Engineering | 2025, 25(22): 9542-9549
• Papers·Traffics and Transportations •
Carbon Emission Reduction Analysis of Producing Synchronous Slurry from Shield Muck Based on Life Cycle Assessment: A Case Study on the Nanzezhuang-Tangzhuang Section of Suzhou Metro Line 8
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Yu-jun DU1, 2, Yan-jia ZHOU3, Ying-jing LIU4, Wen-tao LI1, 2, *
Affiliations
  • 1 School of Rail Transportation, Soochow University, Suzhou 215031, China
  • 2 Intelligent Urban Rail Engineering Research Center of Jiangsu Province, Suzhou 215031, China
  • 3 China Railway Electrification Bureau Group Co., Ltd., Beijing 100071, China
  • 4 Zhongtian Construction Group Co., Ltd., Hangzhou 310016, China
Published: 2025-08-08 doi: 10.12404/j.issn.1671-1815.2405673
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With the rapid development of urban rail transit in China, a large amount of muck is generated during shield tunneling, and its transportation and landfill will cause serious environmental issues. Based on the Suzhou Metro Line 8 section 6, full life cycle assessment method was used to analyze and compare the carbon emissions of conventional disposal and resource utilization of shield muck. Research results indicate that the total amount of muck produced during shield tunneling is 2.64×105 m3 in this project. When traditional burial treatment is carried out for shield muck, the carbon emissions throughout its entire life cycle will reach 3.00×106 carbon emission equivalents. In this case, 5.28×104 m2 of land with a 5-meter landfill depth will be occupied by shield muck. If shield muck and industry-byproducts are used for preparing synchronous grouting materials, the 28-day strength of the grouting material can reach 2.5 MPa. Grouting raw material cost by 467 thousand yuan/km will be reduced, and about 4.6×105 carbon emission equivalents per kilometer will be reduced. The findings provide reference for optimizing the resource utilization of shield muck.

shield tunnel  /  shield muck utilization  /  life cycle assessment  /  synchronous grouting  /  carbon emission
Yu-jun DU, Yan-jia ZHOU, Ying-jing LIU, Wen-tao LI. Carbon Emission Reduction Analysis of Producing Synchronous Slurry from Shield Muck Based on Life Cycle Assessment: A Case Study on the Nanzezhuang-Tangzhuang Section of Suzhou Metro Line 8[J]. Science Technology and Engineering, 2025 , 25 (22) : 9542 -9549 . DOI: 10.12404/j.issn.1671-1815.2405673
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Year 2025 volume 25 Issue 22
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Article Info
doi: 10.12404/j.issn.1671-1815.2405673
  • Receive Date：2024-07-29
  • Online Date：2026-02-11
  • Published：2025-08-08
Article Data
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History
  • Received：2024-07-29
  • Revised：2025-04-28
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Affiliations
    1 School of Rail Transportation, Soochow University, Suzhou 215031, China
    2 Intelligent Urban Rail Engineering Research Center of Jiangsu Province, Suzhou 215031, China
    3 China Railway Electrification Bureau Group Co., Ltd., Beijing 100071, China
    4 Zhongtian Construction Group Co., Ltd., Hangzhou 310016, China
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表12种不同金属材料的力学参数
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Family		 属数
Number of
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Number of
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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
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