基于钻孔瓦斯抽采流量方法的煤层瓦斯抽采半径研究
郭勇飞
（晋能集团有限公司煤炭生产管理局，山西 太原 030006）
摘要： 根据相关规程、规范要求，开采有煤与瓦斯突出危险煤层的矿井必须进行瓦斯抽采，其中，煤层瓦斯抽采半
径是进行抽采设计的重要依据。A 煤矿4-2^#煤层为突出煤层，且无抽采半径参数，为了使抽放钻孔布置科学、合理，需
对该煤层的瓦斯抽采半径进行考察测定。选用直接测定钻孔瓦斯动态抽采流量的方法，按照抽采目标确定抽采率，进而
确定4-2^#煤层瓦斯有效抽采半径。经测定，该矿4-2^#煤层有效抽采半径为3.4 m。
关键词： 突出煤层；瓦斯抽采；抽采流量；抽采半径
中图分类号： TD712⁺.6     文献标志码： A     文章编号： 2095-0802-(2020)09-0013-03
Research on Coal Seam Gas Drainage Radius Based on Borehole Gas Grainage Flow Method
GUO Yongfei
(Coal Production Administration Bureau of Jinneng Group Co., Ltd., Taiyuan 030006, Shanxi, China)
Abstract: According to the requirements of relevant regulations and specifications, gas drainage must be carried out in the coal
mine where there are coal and gas outburst danger coal seams. Among them, the coal seam gas drainage radius is an important
basis for drainage design. 4-2^# coal seam of A Coal Mine is outburst coal seam, and there is no drainage radius parameter. In
order to make the layout of drainage holes scientific and reasonable, it is necessary to investigate and measure the gas drainage
radius of this coal seam. The method of directly measuring the dynamic drainage flow of borehole gas was used to determine the
drainage rate according to the drainage target, and then the effective gas drainage radius of 4-2^# coal seam was determined.
Through measurement, the effective drainage radius of 4-2^# coal seam was 3.4 m.

Key words: outburst coal seam; gas drainage; drainage flow; drainage radius