煤炭工程 ›› 2017, Vol. 49 ›› Issue (5): 8-10.doi: 10.11799/ce201705003

• 设计技术 • 上一篇    下一篇

单一煤层顺层钻孔瓦斯抽采半径动态测定方法研究

邹云龙   

  1. 中煤科工集团重庆研究院有限公司
  • 收稿日期:2016-11-08 修回日期:2016-12-21 出版日期:2017-05-09 发布日期:2017-07-25
  • 通讯作者: 邹云龙 E-mail:250356243@qq.com

Single coal bedding borehole gas radius dynamic determination method

  • Received:2016-11-08 Revised:2016-12-21 Online:2017-05-09 Published:2017-07-25

摘要: 为了更加便捷的测定煤层瓦斯抽采半径,假设在同一地质单元瓦斯抽采规律基本一致的条件下,提出了抽采支管瓦斯抽采量与各区段钻孔钻尺量、抽采时间符合二次方程的叠加函数关系,求得地质单元内任意瓦斯含量区域的瓦斯抽采半径,实现瓦斯抽采半径的动态测定,该方法在新元公司3207工作面回风巷的测定结果与压降法测定抽采半径结果相近,效果良好。

关键词: 单一煤层, 顺层钻孔, 瓦斯抽采半径, 动态测定

Abstract: In order to more convenient to determine coal seam gas drainage radius, gas extraction rule of basic assumptions in the same geological unit consistent condition, proposed the use of gas quantity and gas drainage with each section drilling amount and extraction time conform to the quadratic equation of superposition function relationship, get in any gas content area of the geological unit of gas drainage radius, gas extraction radius of dynamic measurement, the method in the determination of 3207 company return air along the trough results close to radius of pressure drop method extraction result, the result is good.

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