Research on High Ground Stress and Soft Rock Roadway Supporting Technology of Bide Coal Mine

Abstract:

This paper， based on the distortion and failure character of soft rock Roadway in Bide coal mine, analyzed deformation and failure mechanisms of soft rock roadway that all are effected by factors of ground stress, lithology, mining influence, unreasonable support parameters and water. The new supporting scheme and parameters optimization of roadway were presented by means of ground stress measurement, mechanics parameters determination of roof and floor rock, monitoring of anchor-hold and result of surrounding rock classification. Then, through numerical simulation, this paper analyzed how the new supporting scheme could control the deformation of surrounding rock effectively, reduce tress in periphery area of surrounding rock, and decrease the stress concentration region of roadway, and prevent the base angle rock mass from macro shear slipping. The field examination results showed that the new supporting scheme was feasible, which can ensure the stability of roadway, with no consequences like roof falls, rib spalling and floor heave.The research results can be used as reference to design supporting structure in high ground stress soft rock roadway .

• Periodical: Advanced Materials Research (Volumes 446-449)
• Pages: 2156-2161
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.446-449.2156
• Online since: January 2012
• Authors: Yong Dong Jiang, Ling Xiong, Wei Xin Zhou, Xing Jiang Han, Shi Xing Mei, Jian Hu
• Keywords: High Ground Stress, Soft Rock Drift, Support

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