三软煤层巷道持续变形控制技术 |
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引用本文: | 王巨光,赵忠理,陆明心,霍利杰,田银同. 三软煤层巷道持续变形控制技术[J]. 煤炭工程, 2011, 0(5): 23-24 |
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作者姓名: | 王巨光 赵忠理 陆明心 霍利杰 田银同 |
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作者单位: | 1. 冀中能源峰峰集团有限公司,河北邯郸,056107 2. 北联电能源公司,内蒙古呼和浩特,010020 3. 中国矿业大学(北京),北京,100083 |
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摘 要: | 煤岩体单轴及三轴压缩实验表明,煤岩在应力峰值后,与单轴压缩相比,三轴残余应力较大,这一结果表明,施加有效水平支护力后,围岩的承载能力加大,位移减小,或者稳定,并能有效控制煤体的馅饼式变形。实测数据表明,三软煤层巷道破坏的主要原因由水平持续变形引起的。根据古汉山矿具体情况,设计了工钢组合棚,采用半封闭式支护控制围岩持续变形,有效控制了两帮位移。
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关 键 词: | 三软煤层 馅饼式变形 控制 水平支护力 |
收稿时间: | 2011-01-06; |
Sustained Deformation Control Technology of Gateway in Seam with Soft Roof,Soft Coal and Soft Floor |
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Abstract: | The experiment shows that, compared with uniaxial compressing, the residual stress in triaxiality compressing is greater, this can result that the level support can increase the stress of the surrounding rock and decrease or stop the level displacement, at same time, control the pie form displacement of the coal. The measuring data indicates that the main reason for tunnel damage is level displacement. Based on the situation of Guhanshan Colliery, semi-closing support with I bar is designed and applied, which control the continuel displacement of tunnel effectively. |
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Keywords: | Soft coal with soft roof and floor Pie-form displacement Control Level support |
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