Study on Restrain Effect of Ground Grouting to the Vertical Additional Force of Shaft Lining

Abstract:

Based on the introduction of mechanism of ground grouting to reinforce shaft lining in detail, the paper analyzes the weakening effect of additional stress of shaft lining from ground grouting. According to the monitoring results of deformation of ground surface, shaft lining strain, and grouting curtain after grouting, the grouting activity makes the surface uplift of about50-80mm, shaft lining vertical strain release about 220με, mortar curtain average thickness near 8.2m, and the mechanical properties of soil are improved obviously.As a result of ground grouting effectively weaken the additional force has been accumulation for long time of shaft lining, and it can achieve the purpose of prevention and treatment the rupture of shaft lining. Ground grouting is a feasible means to control shaft lining.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 241-245
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.241
• Online since: November 2012
• Authors: Hua Qiang Liang, Jing Xi Wu
• Keywords: Fracturing of Shaft Lining, Ground Grouting, Restraining Effect, Vertical Additional Force

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