新峪矿采空区下近距离巷道矿压特征研究

单仁亮; 黄博; 宋永威; 吴慧敏; 付晓林

新峪矿采空区下近距离巷道矿压特征研究

中国矿业大学(北京) 力学与建筑工程学院,北京100083

基金项目: 国家自然科学基金(51474218)

详细信息

作者简介:
单仁亮（1964—），男，江苏大丰人，教授，博士生导师，从事岩土工程方面的教学与研究工作。

通讯作者:
黄博(1989—)，男，博士研究生，从事隧道工程方面的研究工作。

中图分类号: TD32
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- 文章访问数: 771
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- 被引次数: 0
出版历程
- 收稿日期: 2016-05-02
- 修回日期: 2016-09-22
- 刊出日期: 2016-08-30

Ground pressure features of roadway under close range goaf in the Xinyu Mine

School of Mechanics and Civil Engineering,China University of Mining and Technology,Beijing 100083,China

摘要

摘要: 为研究采空区下近距离巷道的矿压特征，通过现场围岩变形监测分析了回采期间巷道的围岩变形规律，采用数值模拟的方法研究了巷道围岩应力的变化规律。结果表明：巷道的竖向收敛量是两帮收敛量的2.02~3.09倍；距工作面10m的范围内，是采动影响的剧烈区，两帮在此区域受到的影响更为显著；巷道靠煤柱一侧围岩，竖向应力均呈现出一直增长的趋势，采空区的出现破坏了其下方围岩应力变化曲线的指数函数分布形式；上层采空导致了下层工作面的顶板不完整，支承压力作用明显减弱，影响范围仅为5~10m，相比常规类型巷道，影响范围大大缩小；由于上层煤柱侧向支承压力的存在，帮部岩体易因受压膨胀而破坏，引起顶板整体下沉，采空区渗水会加剧铝质泥岩的底板隆起。
- 矿压特征 /
- 采空区下近距离巷道 /
- 围岩变形规律 /
- 应力变化规律 /
- 数值模拟
Abstract: To study the ground pressure features of roadway under close range goaf,deformation laws of surrounding rock during mining are analyzed by deformation monitoring.Variations of vertical stress in surrounding rock during mining are obtained by numerical simulation.The results show that the convergence between roof and floor can be 2.02-3.09 times that between two side walls.The intense influence area is 10 m front of working face,where deformation velocity can become fast.The two side walls are influenced more significant in this area.Vertical stress in surrounding rock closed to coal pillar increases when adjacent to the working face.It can be found that the existence of goaf make curves no longer obey exponential function to the base.Working face under goaf has incomplete roof.So effects of abutment pressure decrease.The influence scope of abutment pressure is only 5-10 m,which reduces obviously compared to common roadway.The formation of side abutment pressure in upper coal pillars make a roadway under goaf has a larger deformation,and side walls supports are easy to damage because of a compressive expansion in surrounding rock.Roof sinking caused by the damage of support in side walls,and the seepage from goaf will aggravate the heave of Al mudstones floor.
- ground pressure features /
- roadway under close range goaf /
- deformation law /
- variation of vertical stress /
- numerical simulation

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参考文献(22)

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新峪矿采空区下近距离巷道矿压特征研究

作者简介:
单仁亮（1964—），男，江苏大丰人，教授，博士生导师，从事岩土工程方面的教学与研究工作。

通讯作者:
黄博(1989—)，男，博士研究生，从事隧道工程方面的研究工作。

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Ground pressure features of roadway under close range goaf in the Xinyu Mine

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留言板

新峪矿采空区下近距离巷道矿压特征研究

作者简介: 单仁亮（1964—），男，江苏大丰人，教授，博士生导师，从事岩土工程方面的教学与研究工作。

通讯作者: 黄博(1989—)，男，博士研究生，从事隧道工程方面的研究工作。

计量

出版历程

Ground pressure features of roadway under close range goaf in the Xinyu Mine

计量

出版历程

目录

作者简介:
单仁亮（1964—），男，江苏大丰人，教授，博士生导师，从事岩土工程方面的教学与研究工作。

通讯作者:
黄博(1989—)，男，博士研究生，从事隧道工程方面的研究工作。