...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Arabian journal of geosciences >Experimental research on measurement of permeability coefficient on the fault zone under coal mine in situ
【24h】

Experimental research on measurement of permeability coefficient on the fault zone under coal mine in situ

机译：煤矿现场断层带渗透系数测量的试验研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In order to measure permeability coefficient K of fault zone under coal mine quickly, the traditional borehole water pressure test method should be improved. After analyzing the principle of pressure water test in borehole, a new test method suit for borehole water pressure test under coal mine was proposed. In the new method, the time T was measured, and the calculating method was also changed from inverse algorithm to forward algorithm. According to the existing parameters and hydrogeologic conditions of fault zone, an empirical value of permeability coefficient Kc was set and then seven setting values were obtained. P-T figures of seven setting values were drawn by computer, and seven P-T figures were converted to K-T figures; the permeability coefficient could be read directly from the K-T figures. The new method was a fast experimental and calculating method to obtain permeability coefficient by borehole pressure water test on the fault zone in situ. The results were in good agreement with the low permeability coefficient of 7.5 x 10(-8) and 8.0 x 10(-8) m/s obtained by pressure water test in new borehole. And, the results were also in good agreement with the results of pumping test. This indicated that the pressure water test in the new borehole and the calculating method are accurate.
机译：为了快速测量煤矿井下断层带的渗透系数K，应改进传统的井筒水压试验方法。在分析了井眼压力水试验原理的基础上，提出了一种适用于煤矿井眼压力水试验的新方法。在新方法中，测量了时间T，并将计算方法也从逆算法更改为正向算法。根据断层带的现有参数和水文地质条件，设定了渗透系数Kc的经验值，得到了七个设定值。用计算机绘制七个设定值的P-T数字，并将七个P-T数字转换为K-T数字;渗透系数可以直接从K-T图中读取。这种新方法是一种快速的实验和计算方法，它可以通过钻孔压力水试验在原位断层带上获得渗透系数。结果与在新井眼中通过压力水试验获得的低渗透系数7.5 x 10（-8）和8.0 x 10（-8）m / s吻合良好。并且，结果也与抽水试验的结果非常吻合。这表明在新井眼中进行压力水试验和计算方法是准确的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号