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金属矿山 ›› 2011, Vol. 40 ›› Issue (06): 42-45.

• 采矿工程 • 上一篇    下一篇

覆岩裂隙带发育高度数值模拟与探测

李家卓1,方庆河2,谭文峰3,刘坤1,庄启恒1   

  1. 1.山东科技大学研究生教育学院;2.郭庄矿业有限责任公司锦丘煤矿;3.山东新巨龙能源有限责任公司
  • 出版日期:2011-06-08 发布日期:2011-06-09
  • 基金资助:

    山东科技大学研究生创新基金项目(编号:YCA100304)。

Numerical Simulation and Detection Study on the Height of Water Flowing Fractured Zone in Overburden Strata

Li Jiazhuo1,Fang Qinghe2,Tan Wenfeng3,Liu Kun1,Zhuang Qiheng1   

  1. 1.Graduate Education School,Shandong University of Science and Technology;2.Jinqiu Coal Mine of Mining Company of Guozhaang;3.Xin Julong Energy Resources Co. Ltd, Shandong
  • Online:2011-06-08 Published:2011-06-09

摘要: 根据锦丘煤矿开采技术条件和围岩力学参数等,建立了力学模型,运用三维显式有限差分法软件Flac3D对自开切眼至充分采动全过程覆岩随工作面推进时的应力、位移和破坏情况进行了数值模拟,由此确定了覆岩导水裂隙带高度。用经验公式对导水裂隙带高度进行了计算,并采用钻孔分段注水法对裂隙带高度进行了现场探测验证,证明数值模拟方法能提供较为理想的预测精度,从而为确定覆岩导水裂隙带高度提供了一种新的且简易可靠的方法。  

关键词: 覆岩移动, 导水裂隙带高度, 数值模拟, 探测

Abstract: The mechanics model is established according to the mechanics parameters of rocks and the exploitation technical conditions of Qinqiu coal mine. By using 3-D explicit finite difference FLAC3D software, the situation of stress, displacement and failure are simulated from open-off cut to full mining to determine the height of water flowing fractured zone in overlying strata as the coalface advanced. That height is calculated by empirical formula and is detected on spot by drilling piecewise injection method. It is approved that the numerical simulation method can provide ideal prediction accuracy, thus providing a new, simple and reliable method to predict the height of water flowing fractured zone.  

Key words: Overlying strata movement, Height of water flowing fractured zone, Numerical simulation, Detection