摘要
根据现场对煤层瓦斯基础参数的测定,在实验室对顺层长钻孔在异径条件下瓦斯浓度、抽放半径和流量等参数变化规律进行数值模拟计算,并在白山坪煤矿1265采煤工作面的溜子道进行抽放半径的效果检验,发现数值模拟计算结果与实测结果吻合较好。最终结果表明,为保证采煤工作面安全生产,钻孔直径应当75～100 mm较好。
According to the determination of basic parameters of gas in coal bed,bedding in the laboratory on drilling under the condition of reducing gas concentration,flow and drainage radius parameter change rule has carried on the numerical simulation,and the way of the valve in Bai shan ping coal mine 1265 coal mining face verifies the effect of the drainage radius. It is found that the numerical simulation results are in good agreement with the measured results. The final result shows that the mining face in order to ensure the safety in production,the hole diameter should be better with 75- 100 mm.
出处
《河北工程大学学报（自然科学版）》
CAS
2016年第2期94-98,共5页
Journal of Hebei University of Engineering:Natural Science Edition
基金
湖南科技大学研究生创新基金资助项目(S140002)
关键词
白山坪煤矿
瓦斯抽采
顺层长钻孔
钻孔直径
数值模拟计算
Bai shan ping coal mine
gas drainage
bedding long borehole
the hole diameter
numerical simulation
