Grouting Improvement in a Mined-Out Area under Tangshan-Tianjin Expressway, China

Abstract:

Expressway construction in mined-out area is faced with some challenges, such as differential settlement and excessive deformation. This paper presents a case study of grouting improvement in a mined-out area under Tangshan-Tianjin expressway, China. The geological conditions in the mined-out area and the mechanisms of surface subsidence are described. A detailed grouting treatment scheme is planned and carried out to reinforce the rock masses. Technical requirements for grouting are described to ensure the reinforcement effect. Verification of the reinforcement effect is carried out using several techniques such as packer test and core drilling method. The results show that the proposed grouting scheme achieves desired effects.

• Periodical: Applied Mechanics and Materials (Volumes 744-746)
• Pages: 505-509
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.744-746.505
• Online since: March 2015
• Authors: Ling Gao*, Huan Sheng Mu
• Keywords: Expressway, Grouting Method, Injection, Mined-Out Area

References

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