Bolt-grouting combined support technology in deep soft rock roadway

Chen Yanlong; Meng Qingbin; Xu Guang; Wu Haoshuai; Zhang Guimin

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Bolt-grouting combined support technology in deep soft rock roadway

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摘要

Analyzing the mineral composition, mechanical properties and ground stress testing in surrounding rock,the study investigated the failure mechanism of deep soft rock roadway with high stress. The boltgrouting combined support system was proposed to prevent such failures. By means of FLAC3D numerical simulation and similar material simulation, the feasibility of the support design and the effectiveness of support parameters were discussed. According to the monitoring the surface and deep displacement in surrounding rock as well as bolt axial load, this paper analyzed the deformation of surrounding rock and the stress condition of the support structure. The monitor results were used to optimize the proposed support scheme. The results of field monitors demonstrate that the bolt-grouting combined support technology could improve the surround rock strength and bearing capacity of support structure, which controlled the great deformation failure and rheological property effectively in deep soft rock roadway with high stress. As a result, the long term stability and safety are guaranteed.

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《矿业科学技术（英文版）》 |2016年第5期|777-785|共9页
作者
Chen Yanlong; Meng Qingbin; Xu Guang; Wu Haoshuai; Zhang Guimin;
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作者单位

1. State Key Laboratory for Geomechanics and Deep Underground Engineering;

China University of Mining & Technology 2. Department of Mining Engineering & Metallurgical Engineering;

Western Australian School of Mines;

Curtin University 3. School of Mechani;

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原文格式 PDF
正文语种 chi
中图分类巷道支护;
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Bolt-grouting combined support technology in deep soft rock roadway

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