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BULLETIN OF THE CHINESE CERAMIC SOCIETY ›› 2026, Vol. 45 ›› Issue (8): 2724-2736.DOI: 10.16552/j.cnki.issn1001-1625.2026.0046

• Solid Waste and Eco-Materials • Previous Articles     Next Articles

Research Progress on On-Site Disposal Technology of Shield Muck and Preparation of Backfill Grouting Material

LEI Zhenghui1(), ZHAO Chengjun1, LI Yongliu1, YAN Hongfu2, FENG Tianyou2, TAO Rencheng2, JI Qiuling3, GAO Zicong3, MA Yuwei3()   

  1. 1.Guangzhou Metro Construction Management Co. ,Ltd. ,Guangzhou 510330,China
    2.China Tunnel Construction Group Co. ,Ltd. ,Guangzhou 510308,China
    3.Research Center for Wind Engineering and Engineering Vibration,Guangzhou University,Guangzhou 510006,China
  • Received:2026-01-13 Revised:2026-03-30 Online:2026-08-15 Published:2026-09-01
  • Contact: MA Yuwei

Abstract:

With the rapid development of urban rail transit, the efficient disposal of shield muck has become a key issue restricting the sustainable development of tunnel projects. Using shield muck to prepare backfill grouting materials can not only achieve the on-site resource utilization of muck, significantly reduce the grouting cost, but also conform to the national policy orientation of "reduction, resource utilization and harmless treatment" for construction solid waste. This paper systematically expounds the source, classification and on-site reduction treatment technology of shield muck, and focuses on summarizing the research progress and engineering application of using shield muck to prepare backfill grouting materials. The research shows that after classification treatment, the coarse particles in the muck can replace fine aggregates to provide skeleton support, and the fine particles have the potential to replace bentonite. By optimizing the curing agent system, regulating the particle size distribution and water-solid ratio, the utilization rate of muck can be effectively improved, and the fluidity, stability and compressive strength of the slurry can be improved. Engineering practice shows that the muck-based grouting materials perform well in terms of settlement control, segment floating and anti-seepage. However, they still face challenges such as large differences in muck composition, lack of standard specifications and insufficient long-term performance data. In the future, research on standardization and durability needs to be strengthened.

Key words: tunnel engineering, shield muck, reduction treatment, resource utilization, backfill grouting material, engineering application

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