文章摘要
杨自友,蔡永彬,程长清,赵春堂.不同推进方向对近距离巷道围岩的影响[J].安徽建筑大学学报,2023,31(2):1-6
不同推进方向对近距离巷道围岩的影响
Influence of Different Advancing Directions on Surrounding Rock of Short Distance Roadway
  
DOI:
中文关键词: 推进方向  交叉巷道  围岩稳定  FLAC3D 模拟
英文关键词: advancing direction  cross roadway  surrounding rock stability  FLAC3D simulation
基金项目:安徽省高校自然科学研究重点项目(KJ2021A0610)
作者单位
杨自友 安徽建筑大学 土木工程学院安徽 合肥 230601 
蔡永彬 安徽建筑大学 土木工程学院安徽 合肥 230601 
程长清 安徽建筑大学 土木工程学院安徽 合肥 230601 
赵春堂 中建二局第三建筑工程有限公司北京 100070 
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中文摘要:
      为了研究工作面沿倾向和走向推进对其下方巷道围岩稳定性的影响,利用数值模拟软件 FLAC3D 分析在不同推进方向下交叉巷道的应力、位移以及塑性区的分布规律。结果表明:推进相同距离时,倾向方向推进对下部巷道围岩应力场及塑性区变化的影响比走向方向的小,但位移变化无显著的规律性。其中,倾向比走向的垂直应力和水平应力最大分别减小了 6%和 26%。随着推进距离的增加,巷道的应力、走向方向位移、塑性区均增大,而倾向方向位移几乎不变。此工程环境下,巷道交叉部位以及煤层和巷道中间部位应力、位移和塑性区变化较大,正式开采时需要对该位置重点支护。
英文摘要:
      To study the influence of the working face advancing direction along the dip and strike on the surrounding rock stabilityof the roadway below it,the numerical simulation software FLAC3D is used to analyze the stress,displacement and plastic zonedistribution of the cross roadway in different advancing directions. The results show that with the same advancing distance,the influenceof dip mining on the stress field and plastic zone of the surrounding rock of the roadway below is smaller than that of strike mining,andthe displacement change has no significant regularity. The dip vertical stress and horizontal stress are smaller than the strike verticalstress and horizontal stress,and the minimum reduction is 6% and 26%,respectively. As the advancing distance increasing the stress,strike displacement and plastic zone of roadway increase,while the dip displacement is almost unchanged. In this project,the stress,the strike displacement and plastic zone at the intersection of roadway and the middle of coal seam and roadway change greatly,so it isnecessary to provide support at this position in mining.
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