特厚泥质顶板巷道锚杆支护关键参数识别与应用

发布时间：2018-06-03 01:52

本文选题：特厚泥质顶板 + 正交试验　；参考：《中国安全科学学报》2017年07期

【摘要】：为分析特厚泥质顶板巷道锚杆支护参数的敏感性,以黄岩汇煤矿15107工作面为工程背景,采用理论分析、数值计算与现场工业试验方法,研究锚杆长度、锚杆间距、锚杆预紧力、锚索长度、锚索间距和锚索预紧力等支护参数对巷道稳定性的影响;并建立巷道顶板力学模型,给出锚索间距的确定方法。研究发现,影响特厚泥质顶板巷道稳定的锚杆支护参数敏感性排序为:锚索间距锚杆预紧力锚索预紧力锚杆长度=锚杆间距锚索长度,锚索间距是影响特厚泥质顶板稳定性的最敏感因素。现场应用结果表明:合理确定锚索间距可以有效控制该类巷道的变形破坏。
[Abstract]:In order to analyze the sensitivity of bolt support parameters of thick muddy roof roadway, taking 15107 face of Huang Yan Coal Mine as engineering background, the length of bolt, the spacing of anchor rod and the pre-tightening force of bolt are studied by theoretical analysis, numerical calculation and field industrial test method. The influence of support parameters such as the length of anchor cable, the distance between anchor cables and the pre-tightening force of anchor cable on the stability of roadway is discussed, and the mechanical model of roof of roadway is established, and the method of determining the spacing of anchor cable is given. It is found that the sensitivity order of anchor support parameters affecting the stability of extremely thick muddy roof roadway is as follows: the distance between anchor cable and cable, the length of pre-tightening force of anchor cable and the length of anchor cable, The distance between anchor cables is the most sensitive factor affecting the stability of thick muddy roof. The field application results show that reasonable determination of anchor cable spacing can effectively control the deformation and failure of this kind of roadway.
【作者单位】：贵州大学矿业学院;中国矿业大学(北京)力学与建筑工程学院;中国矿业大学(北京)煤炭资源与安全开采国家重点实验室;
【基金】：国家自然科学基金资助(51574093) 贵州大学引进人才科研项目(贵大人基合字2016-053号)
【分类号】：TD353.6

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