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[1]刘啸.深井动压影响下山煤巷围岩变形机理与控制研究[J].中国安全生产科学技术,2019,15(11):130-136.[doi:10.11731/j.issn.1673-193x.2019.11.021]
　LIU Xiao.Study on mechanism and control of surrounding rock deformation of dip coal roadway affected by dynamic pressure in deep well[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(11):130-136.[doi:10.11731/j.issn.1673-193x.2019.11.021]
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深井动压影响下山煤巷围岩变形机理与控制研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
15
期数:
2019年11期
页码:
130-136
栏目:
职业安全卫生管理与技术
出版日期:
2019-11-30

文章信息/Info

Title:
Study on mechanism and control of surrounding rock deformation of dip coal roadway affected by dynamic pressure in deep well
文章编号:
1673-193X(2019)-11-0130-07
作者:
刘啸
（1.安徽理工大学 深部煤矿采动响应与灾害防控安徽省重点实验室，安徽 淮南 232001；
2.煤科集团沈阳研究院有限公司，辽宁 抚顺 113000；
3.煤矿安全技术国家重点实验室，辽宁 抚顺 113000）
Author(s):
LIU Xiao
(1.Anhui Province Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine,Anhui University of Science and Technology,Huainan Anhui 232001,China;
2.Shenyang Research Institute,China Coal Technology and Engineering Group,Fushun Liaoning 113000,China;
3.State Key Lab of Coal Mine Safety Technology,Fushun Liaoning 113000,China)
关键词:
深井; 动压影响; 下山煤巷; 非对称变形; 支护理论
Keywords:
deep well;  dynamic pressure effect;  dip coal roadway;  supporting theory
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2019.11.021
文献标志码:
A
摘要:
以刘桥一矿Ⅱ66回风下山为工程背景，采用现场实测、实验室实验、数值模拟和工业性试验综合分析了下山煤巷非对称变形破坏机理，提出动压影响下深井软弱煤巷围岩多层次组合控制理论，并给出优化控制措施。研究表明：回风下山变形失稳严重并呈非对称性，围岩完整性较差，强度低。地应力实测显示，回风下山处于高原岩应力区，最大主应力为水平应力且具有明显方向性，与巷道轴线夹角为71°，断面顶底板剪切破坏风险较大；数值模拟显示，回风下山开拓延伸期间，受邻近轨道下山、辅助下山影响显著，4煤回采对其影响较小，6煤工作面回采是下山煤巷非对称失稳的主要诱因；提出以围岩深浅孔注浆为核心，以新型注浆锚索、锚杆为装备基础的高阻让压全断面组合控制理论，并给出具体优化方案。工业性试验显示，下山煤巷围岩变形得到有效控制。
Abstract:
Taking Liuqiao No.1 coal mine II66 returnair dip as the engineering background,the asymmetric deformation failure mechanism of dip coal roadway was comprehensively analyzed by using the field measurement,laboratory experiment,numerical simulation and industrial test.The multilevel combined control theory for the soft surrounding rock of coal roadway in deep well under the influence of dynamic pressure was put forward,and the optimization control measures were proposed.The results showed that the deformation and instability of returnair dip was serious and asymmetric,and the integrity of surrounding rock was poor,with the low strength.The measured insitu stress showed that the returnair dip lay in the stress zone of the plateau rock.The maximum principal stress was the horizontal stress and had the obvious directivity,and its included angle with the roadway axis was 71°,so the shear failure risk of sectional roof and floor was large.The numerical simulation showed that during the development and extension periods of returnair dip,the influence by the adjacent track dip and auxiliary dip was significant,while the influence by the No.4 coal backstopping was little,and the No.6 coal working face backstopping was the main cause of asymmetric instability of the dip coal roadway.The combined control theory of high resistance yielding full section with the grouting of deep and shallow hole in surrounding rock as the core and the new grouting anchor rope and bolt as the equipment basis was put forward,and the specific optimization scheme was presented.The industrial tests showed that the deformation of surrounding rock of the dip coal roadway was effectively controlled.

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备注/Memo

备注/Memo:
收稿日期： 2019-08-31
* 基金项目： 国家自然科学基金项目（51774010）
作者简介： 刘啸，博士研究生，主要研究方向为矿山压力与岩层控制。
更新日期/Last Update: 2019-12-25