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江苏科技信息 ›› 2019, Vol. 36 ›› Issue (8): 36-38.doi: 10.1004-7530/2019-36-8-36

• 基础研究 • 上一篇    下一篇

不同充填率条件下倾斜矿体覆岩破坏规律及地表变形研究

冀宇鑫,张阿鹏,宋高峰   

  1. 北方工业大学 土木工程学院,北京 100144
  • 出版日期:2019-03-20 发布日期:2019-07-09
  • 作者简介:冀宇鑫（1998— ）,男,内蒙古乌兰察布人,本科生;研究方向：矿山压力 与岩层控制。
  • 基金资助:
    北京市大学生科学研究与创业行动计划,项目名称：深部采动巷道围岩稳定性数值及物理模拟研究

Study on overburden failure law and surface deformation of inclined orebody under different filling rate

Yuxin Ji,Apeng Zhang,Gaofeng Song   

  1. School of Civil Engineering, Northern University of Technology, Beijing 100144, China
  • Online:2019-03-20 Published:2019-07-09

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摘要：

文章以某铁矿为工程背景,采用PHASE 2D有限元软件建立数值模型,研究了不同充填率影响下倾斜矿体覆岩破坏特征及地表变形规律,拟合了地表下沉量与充填率的关系。数值模拟结果表明：充填率是围岩稳定性及地表变形的重要影响因素,随着充填率的增大,地表垂直位移和水平位移都显著减小。

关键词: 充填率, 倾斜矿体, 覆岩破坏, 地表变形

Abstract:

Taking an iron mine as an engineering background, a numerical model was established by using the PHASE 2D finite element numerical modelling software. The failure process of the overburden and surface deformation of an inclined orebody under different filling ratios were studied. A mathematic relationship between the surface subsidence and filling ratios was developed. The numerical modelling results show that the filling ratio is an important factor affecting the stability of surrounding rock as well as the surface subsidence. The vertical and horizontal displacement of the ground can be significantly reduced by increasing the filling ratios.

Key words: filling ratio, inclined orebody, overburden failure, surface deformation

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