摘要
为研究钻屑瓦斯解吸指标K_1值深孔预测取样方式及其合理预测深度,以中岭煤矿3#煤层为试验基础进行钻屑瓦斯解吸指标K_1值测定。根据钻屑瓦斯解吸指标K_1值测定原理,分析了影响K_1值测定误差的因素及K_1值预测孔深的变化规律。基于这一分析结果及变化规律,并结合现场采取不同取样方法所测定的结果,确定K_1值深孔预测最佳取样方式为基于孔底喷射器的深孔正压压风装置,得到合理预测深度为32 m。
To study the sampling methods and reasonable prediction depth of drilling cuttings gas desorption index Kl value,based on the experiment of 3# coal seam in Zhongling Colliery, gas desorption index K1 value of the drilling cuttings was determined in this paper. According to the principle of drilling cuttings gas desorption K1 value index determination, the K1 value determination error influence factors and the change rule of K1 value were analysed to predict the hole depth. Based on the analysis results and change law,combining with the determination result of K1 value with different sampling methods on site,determining the best sampling method of the K1 value deep hole prediction is the positive pressure ventilation device for deep hole based on the hole bottom ejector barotropic,the reasonable forecast depth is 32 m.
出处
《中州煤炭》
2016年第2期6-9,共4页
Zhongzhou Coal
关键词
K1值
深孔取样
取样方式
解吸指标
K1 value
deep hole sampling
sampling methods
desorption index
