摘要
为了解决传统测压方案在测定含夹矸厚煤层瓦斯压力时的不准确性及整个测压过程耗时较长等问题,通过模型建立和数值解算得到了径向、球向流场的卸压区半径随时间的变化关系,结果表明球向流场更有利于缩短瓦斯压力的平衡时间,提出了有效的含夹矸厚煤层瓦斯压力测定方案,经过现场应用进一步证实了该方法可以准确快速测定含夹矸厚煤层的瓦斯压力。
For the inaccuracy and long time of traditional pressure solution in thick seam with parting gas pressure measurement, through the model establishment and numerical calculate the radial flow fields and the spherical flow fields of unloading zone radius change over time, the results show that the spherical flow fields is more advantageous to reduce gas pressure balance time, and puts forward the effective contain thick seam with parting gas pressure measurement solutions, furthermore, identify that this method can measure thick seam with parting gas pressure accurately and rapidly.
出处
《煤炭技术》
CAS
北大核心
2016年第7期124-127,共4页
Coal Technology
基金
江苏省自然科学基金青年基金(BK20150180)
江苏省普通高校研究生科研创新计划项目(KYLX15-1431)
关键词
瓦斯压力
突出预测
径向流场
球向流场
gas pressure
outburst prediction
radial flow fields
spherical flow fields
