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现代矿业 ›› 2016, Vol. 32 ›› Issue (09): 41-44+56.

• 采矿工程 • 上一篇    下一篇

断层条件下开采时矿压显现规律的数值模拟

钟勇1,2   

  1. 1.紫金矿业集团股份有限公司;2.洛阳坤宇矿业有限公司
  • 出版日期:2016-09-20 发布日期:2016-11-14

Numerical Simulation of the Law of Underground Pressure Induced by Coal Extraction Under Fault

Zhong Yong1,2   

  1. 1.Zijin Mining Group Co., Ltd.;2.Luoyang Kunyu Mining Co., Ltd.
  • Online:2016-09-20 Published:2016-11-14

摘要: 为了弄清朱集东矿1111(1)综采作业面在断层条件下推进过程中的矿压显现规律,采用RFPA2D-Strata软件,对比模拟分析了工作面从断层上盘、下盘向前推进过程中断层对工作面支承压力的影响。结果表明:在断层条件下,无论从上盘还是下盘开采,工作面离断层较近时,工作面前方都会产生较高的应力峰值,形成冲击危险;相较于在上盘断层开采,工作面位于下盘断层时产生的应力集中系数更高,冲击危险性也更高。

关键词: 断层, RFPA2D-strata, 支承压力, 数值模拟

Abstract: In order to analyze the underground pressure law induced by coal extraction under fault of 1111(1)fully-mechanized working face in Zhuji east mine,based on the RFPA2D-strata software,the influence of abutment pressure originated by the working face advanced on hanging wall and foot wall of fault are conducted camparative simulation analysis.The results show that under the fault condition,no matter from the top or from the footwall,the peak value of stress in front of the working face is produced,so,the impact hazard is appeared when the working face is close to the fault;the stress concentration factor and impact hazard when the working face advanced on foot wall of fault are higher than the ones induced by the working face advanced on hanging wall of fault.

Key words: Fault, RFPA2D-Strata, Abutment pressure, Numerical simulation