煤层长距离定点密闭取芯测瓦斯技术应用研究

Study on the Application of Gas Measurement Technology with Long-distance Fixed-point Closed Coring in Coal Seams

为精准测定煤层瓦斯含量,针对传统采样测定煤层瓦斯含量技术存在的不足,研究长距离定点密闭取芯技术在煤层瓦斯测定中的应用,介绍试验区的地质情况,设计定向长钻孔参数,探讨密闭取芯装置的结构与具体取芯工艺流程,分析密闭取芯情况,再针对密闭取芯过程中存在的问题提出相应解决措施,以更精准地测定煤芯瓦斯含量,进一步做好煤芯瓦斯的防治工作。

In order to accurately measure the coal seam gas content,in view of the shortcomings of the traditional sampling and measuring technology of coal seam gas content,the application of long-distance fixed-point closed coring technology in coal seam gas measurement was studied,the geological conditions of the test area were introduced,the directional long drilling parameters were designed,the structure of the closed coring device and the specific coring process were discussed,and the closed coring situation was analyzed.Then corresponding solutions are put forward to the problems existing in the process of closed coring,so as to measure the gas content of coal core more accurately,and further do a good job in the prevention and control of coal core gas.