| 龙固矿底板突水危害性预测 |
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| 引用本文： | 孔海陵,陈占清,王路珍.龙固矿底板突水危害性预测[J].矿业安全与环保,2011,38(5). |
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| 作者姓名： | 孔海陵 陈占清 王路珍 |
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| 作者单位： | 1. 盐城工学院,江苏盐城,224003
2. 中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州,221008 |
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| 基金项目： | 盐城工学院应用基础研究项目(XKR2010010); 国家重点基础研究发展计划项目(2007CB209400) |
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| 摘 要： | 基于层状岩体渗流失稳条件,以突水因数作为突水判据,预测了龙固矿底板的突水危害性。根据龙固矿地质岩层柱状图,建立了一种有限元计算模型,采用RFPA2D模拟了采场推进到50 m和150 m时底板岩层的应变分布;利用渗透特性与应变的关系,映射出底板岩层的渗透特性分布,并计算了相应于这两个状态的突水因数。研究表明,随着工作面的推移,底板破坏范围不断扩大,变形相应地增大;由于岩层的破坏,其渗透率随应变按指数规律急剧增大,而非Darcy流β因子和加速度系数则按指数规律急剧减小,从而突水因数近似地按指数规律增大。
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| 关 键 词： | 煤层底板 突水危害性 突水因数 渗流失稳 |
Prediction on Floor Water-inrush Hazard in Longgu Coal Mine |
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| KONG Hai-ling,CHEN Zhan-qing,WANG Lu-zhen.Prediction on Floor Water-inrush Hazard in Longgu Coal Mine[J].Mining Safety & Environmental Protection,2011,38(5). |
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| Authors: | KONG Hai-ling CHEN Zhan-qing WANG Lu-zhen |
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| Affiliation: | KONG Hai-ling,CHEN Zhan-qing,WANG Lu-zhen |
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| Abstract: | Prediction was made on the water inrush hazard from floor in Longgu Coal Mine according to the seepage and destabilizing condition of the bedded rock mass and by taking the water inrush factor as the criterion for water inrush.A finite element calculation model was established according to the geological column of rock mass in Longgu Mine,the strain distribution of floor rock stratum was simulated by using RFPA2D while the longwall face was advanced to 50m and 150m;the permeability characteristics and distr... |
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