煤炭工程 ›› 2016, Vol. 48 ›› Issue (1): 114-117.doi: 10.11799/ce201601033

• 研究探讨 • 上一篇    下一篇

改进突水系数法在先锋煤矿底板突水评价中的应用

樊亚红   

  1. 昆明理工大学
  • 收稿日期:2015-05-04 修回日期:2015-07-13 出版日期:2016-01-10 发布日期:2016-02-01
  • 通讯作者: 樊亚红 E-mail:yahong1914@sina.com

Application of Modified Water Inrush Coefficient Method to Evaluation of Water Inrush from Mine Floor of Xianfeng

  • Received:2015-05-04 Revised:2015-07-13 Online:2016-01-10 Published:2016-02-01

摘要: 依据莫尔库伦强度准则和突水系数公式,得出了新的突水系数公式,并用其预测了先锋露天煤矿重要点位的突水性,与已有突水系数的评价结果进行比较,结果表明,有些点位采用突水系数评价的结果为不突水,而采用改进突水系数法评价则有可能突水。最后,利用FLAC3D软件对煤层底板的破坏特征进行分析,并用数值模拟的结果与新的评价方法所得结果进行简单对比,两者结果基本一致,进一步验证了该评价方法的合理性。

关键词: 底板突水, 突水系数, 剪切破坏, 破坏特征, FLAC3D

Abstract: Based on the Mohr-Coulomb yield criterion and the Formula of water inrush coefficient, we obtain a new method to evaluate and predict water-inrush from coal seam floor. And use it to predict water-inrush of some important point of the Xianfeng mine in Yunnan Province. Then compared with the result of the Formula of water inrush coefficient, find that some areas non-water inrush with the result of the Formula of water inrush coefficient, but it is possible to water inrush with the new method of this paper. On the other hand, we analysis failure characteristics of floor water inrush with FLAC3D software. The results of numerical simulation are compared with the results of the new evaluation method. The two results are basically consistent, further verified the rationality of the evaluation.

中图分类号: