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Development of an advanced rock support technology for rockburst-prone mines

Development of an advanced rock support technology for rockburst-prone mines
针对岩爆矿山的先进岩石支护技术的开发
批准号:
461108-2013
负责人:
Cai, Ming
金额:
$3.91万
依托单位国家:
加拿大
项目类别:
Collaborative Research and Development Grants
财政年份:
2014
资助国家:
加拿大
项目状态:
已结题
起止时间:
2014-01-01 至 2015-12-31

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英文摘要
As mining progresses to deep grounds, mining-induced rock failure, seismicity and rockburst problems increase significantly. As an important line of defense, ground control measures and burst-resistant rock support are used to prevent or minimize damage to excavations and enhance workplace safety. Existing rock support technologies use a two-pass system, i.e., standard support in the form of rebar with mesh or shotcrete is installed in the first pass when the drift is excavated. At a later time, the crew will install the burst-resistant yielding support in the second pass. This two-pass system slows down drift development significantly. In addition, the cost of rock support is high because extra boreholes need to be drilled as labor cost constitutes the highest cost item in ground support.
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