特厚泥质顶板巷道锚杆支护关键参数识别与应用

doi:10.16265/j.cnki.issn1003-3033.2017.07.022

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (7): 121-126.doi: 10.16265/j.cnki.issn1003-3033.2017.07.022

特厚泥质顶板巷道锚杆支护关键参数识别与应用

马振乾¹ 讲师, 姜耀东^2,3 教授, 左宇军¹, 曹云钦¹

1 贵州大学矿业学院,贵州贵阳 550025;
2 中国矿业大学北京力学与建筑工程学院,北京 100083;
3 中国矿业大学北京煤炭资源与安全开采国家重点实验室,北京 100083

收稿日期:2017-02-05 修回日期:2017-05-15 发布日期:2020-11-26
作者简介:马振乾 (1987—),男,河南永城人,博士,讲师,主要从事煤矿巷道围岩控制等方面的研究工作。E-mail:zqma@gzu.edu.cn。
基金资助:
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)。

Identification and application of key parameters of bolt support for roadways with extra-thick mudstone roof

MA Zhenqian¹, JIANG Yaodong^2,3, ZUO Yujun¹, CAO Yunqin¹

1 School of Mining,Guizhou University,Guiyang Guizhou 550025,China;
2 School of Mechanics and Civil Engineering, China University of Mining & TechnologyBeijing, Beijing 100083, China;
3 State Key Laboratory of Coal Resources and Safe Mining, China University of Mining & TechnologyBeijing, Beijing 100083, China

Received:2017-02-05 Revised:2017-05-15 Published:2020-11-26

摘要/Abstract

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。

关键词: 特厚泥质顶板, 正交试验, 锚杆支护, 敏感性, 数值模拟

Abstract: To analyze the sensitivity of bolt support parameters for roadways with extra-thick mudstone roof, the panel 15107 in Huangyanhui colliery was taken as engineering background, theoretical analysis, numerical simulation and field industrial test method were adopted to investigate the influence of bolt length, bolt spacing, bolt preload, anchor length, anchor spacing and anchor preload on the stability of the roadway. A mechanical model of roadway roof was also built, and a method of determining the spacing of cable was given. The results show that the order of bolt support parameters, by their effects on the stabilty, is anchor spacing, bolt preload, anchor preload, bolt length, bolt spacing and anchor length,anchor spacing is the most significant factor affecting the stability. Field application shows that reasonable anchor spacing can effectively control the deformation and failure of the roadway.

Key words: extra-thick mudstone roof, orthogonal experiment, bolt support, sensitivity, numerical simulation

中图分类号:

X936

马振乾, 姜耀东, 左宇军, 曹云钦. 特厚泥质顶板巷道锚杆支护关键参数识别与应用[J]. 中国安全科学学报, 2017, 27(7): 121-126.

MA Zhenqian, JIANG Yaodong, ZUO Yujun, CAO Yunqin. Identification and application of key parameters of bolt support for roadways with extra-thick mudstone roof[J]. China Safety Science Journal, 2017, 27(7): 121-126.

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特厚泥质顶板巷道锚杆支护关键参数识别与应用

Identification and application of key parameters of bolt support for roadways with extra-thick mudstone roof

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