矿岩接触带巷道顶板变形问题研究

doi:10.16265/j.cnki.issn1003-3033.2018.07.020

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (7): 122-128.doi: 10.16265/j.cnki.issn1003-3033.2018.07.020

矿岩接触带巷道顶板变形问题研究

刘晓云¹ 讲师, 叶义成^1,2 教授, 李玉飞¹, 罗斌玉¹, 刘洋¹, 王其虎^**1,2 讲师

1 武汉科技大学资源与环境工程学院,湖北武汉 430081;
2 湖北省工业安全工程技术研究中心,湖北武汉 430081

收稿日期:2018-04-17 修回日期:2018-06-02 出版日期:2018-07-28 发布日期:2020-11-25
通讯作者: **王其虎(1987—),男,湖北钟祥人,博士,讲师,主要从事采矿工程和矿业系统工程研究。E-mail:wangqihu@wust.edu.cn。
作者简介:刘晓云(1985—),男,湖北荆门人,博士研究生,讲师,主要研究方向为矿业安全系统工程。E-mail:liuxywust@163.com。
基金资助:
国家自然科学基金资助(51574183);国家安全监管总局安全生产重特大事故防治关键技术科技项目(149hubei-0002-2017AQ);湖北省教育厅科学技术研究项目(Q20151102);冶金矿产资源高效利用与造块湖北省重点实验室开放基金资助(20160710)。

Study on deformation of roof of ore rock contact zone roadway

LIU Xiaoyun¹, YE Yicheng^1,2, LI Yufei¹, LUO Binyu¹, LIU Yang¹, WANG Qihu^1,2

1 School of Resource and Environmental Engineering,Wuhan University of Science and Technology,Wuhan Hubei 430081,China;
2 Industrial Safety Engineering Technology Research Center of Hubei Province,Wuhan Hubei 430081,China

Received:2018-04-17 Revised:2018-06-02 Online:2018-07-28 Published:2020-11-25

摘要/Abstract

摘要： 为研究矿岩接触带巷道顶板变形对接触带巷道稳定性的影响,以大冶铁矿矿岩接触带巷道为研究对象,通过力学分析,建立接触带巷道顶板力学模型,推导接触带巷道顶板岩梁挠度表达式;运用FLAC^3D数值模拟软件,模拟接触带巷道顶板应力分布和沉降量的变化情况;通过现场监测试验,分析接触带巷道矿岩两侧顶板累积沉降量和沉降速率的变化规律。研究表明:接触带巷道两帮应力局部集中,顶底板存在卸压现象,且顶板应力在接触带处出现波动跳跃;巷道顶板沉降显著,但位移云图变化平稳,位移影响区范围为沿巷道方向接触带前后5.00m左右;接触带巷道铁矿侧顶板累积沉降量和沉降速率均比大理岩侧小;接触带巷道大理岩侧顶板沉降速率先增大后减小,铁矿侧顶板沉降速率先增大后减小再增大再减小。

关键词: 接触带, 巷道顶板, 变形规律, 数值模拟, 监测

Abstract: In order to analyze the influence of roadway roof deformation on the stability of contact roadway,taking the contact roadway in Daye iron mine as the research object,a mechanical model of the roof of contact roadway was established based on mechanical analysis,and the expression of the disturbance of rock beam of the roof of contact roadway was deduced.By using FLAC^3D software,the stress distribution and settlement amount of the roof of the contact zone roadway were analyzed,based on the field monitoring test,the accumulative settlement and settlement rate of the roof on both sides of the roadway in the contact zone were further analyzed.Research shows that the two groups of stress in the ore rock contact zone are concentrated locally,the roof and floor have the phenomenon of unloading,and the roof stress jumps fluctuatly in the contact zone.The roof subsidence of roadway is obvious,but the change of displacement nephogram is stable,and the range of displacement influence area is about 5.00 m around the contact band.The cumulative settlement and settlement rate of the side roof of the contact roadway iron ore are all smaller than those of the marble side.The settlement rate of the side roof of marble increases first and then decreases,and the deposition rate of the side roof of iron mine first increases,then decreases,then increases and then decreases.

Key words: contact zone, roof of roadway, deformation law, numerical simulation, deformation monitoring

中图分类号:

X936

刘晓云, 叶义成, 李玉飞, 罗斌玉, 刘洋, 王其虎. 矿岩接触带巷道顶板变形问题研究[J]. 中国安全科学学报, 2018, 28(7): 122-128.

LIU Xiaoyun, YE Yicheng, LI Yufei, LUO Binyu, LIU Yang, WANG Qihu. Study on deformation of roof of ore rock contact zone roadway[J]. China Safety Science Journal, 2018, 28(7): 122-128.

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矿岩接触带巷道顶板变形问题研究

Study on deformation of roof of ore rock contact zone roadway

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