瓦斯涌出量与构造煤关联性预测研究

doi:10.16265/j.cnki.issn1003-3033.2019.10.016

中国安全科学学报 ›› 2019, Vol. 29 ›› Issue (10): 105-109.doi: 10.16265/j.cnki.issn1003-3033.2019.10.016

瓦斯涌出量与构造煤关联性预测研究

田世祥讲师, 林华颖, 马瑞帅, 许石青高级实验师, 曾建华, 余照阳讲师

贵州大学矿业学院,贵州贵阳 550025

收稿日期:2019-07-08 修回日期:2019-09-11 出版日期:2019-10-28 发布日期:2020-10-27
作者简介:田世祥 (1988—),男,贵州镇远人,博士,讲师,主要从事矿井瓦斯灾害防治等方面的教学与研究工作。E-mail:husttsx@163.com。
基金资助:
贵州省科技厅项目(黔科合支撑[2019]2887号;黔科合LH字【2016】7461号);贵州省科技计划项目(黔科合平台人才[2017]5788);贵州大学引进人才科研项目(贵大人基合字(2016)59号)。

Prediction of correlation between gas emission and tectonic coal

TIAN Shixiang, LIN Huaying, MA Ruishuai, XU Shiqing, ZENG Jianhua, YU Zhaoyang

College of Mining, Guizhou University, Guiyang Guizhou 550025, China

Received:2019-07-08 Revised:2019-09-11 Online:2019-10-28 Published:2020-10-27

摘要/Abstract

摘要： 为研究煤矿开采钻进过程中构造煤瓦斯涌出量随钻进深度的变化特性,以薛湖煤矿2104运输巷掘进工作面为试验研究对象,采用自主研制的连续流量法预测系统中瓦斯流量情况,测定钻孔瓦斯涌出量及钻进深度数据;根据初始瓦斯涌出量变化趋势,预测钻孔前方构造煤的位置。研究结果表明:在原生结构煤体中钻进时,钻孔瓦斯涌出量随钻进深度增加而增大,钻孔瓦斯涌出曲线平稳;钻进到构造煤时,钻孔瓦斯涌出量迅速增加、曲线变陡;钻进为9.9 m时,钻孔瓦斯涌出量出现突变点;10.2 m时,瓦斯涌出量达到最大值,为89.9 L/min,是正常值的2.05倍;以3号钻孔为例,采掘活动验证了该预测方法的准确性和精度。

关键词: 破碎带, 钻孔瓦斯涌出量, 构造煤预测, 连续流量法, 瓦斯解吸

Abstract: In order to study gas emission variation of tectonic coal during mining process along with change of drilling depth, gas flow of self-developed continuous flow method prediction system was adopted to measure the gas emission and drilling depth of boreholes with a drivage face of Xuehu coal mine 2104 roadway as a experimental object. Then based on initial gas emission trends, locations of borehole tectonic coal ahead were predicted. The results show that when drilling into coal with primary structure, gas emission of boreholes increases with the increase of drilling depth, and gas emission curve is stable, but when drilling into tectonic coal, it increases rapidly with a steeper curve which would come to a sudden change point at a drilling distance of 9.9 m and will reach maximum value of 89.9 L/min at 10.2 m, 2.05 times of normal value. With No. 3 borehole as an example, the accuracy and precision of prediction method are verified by mining activities.

Key words: crushed zone, gas emission from borehole, tectonic coal prediction, continuous flow method, gas desorption

中图分类号:

X936

田世祥, 林华颖, 马瑞帅, 许石青, 曾建华, 余照阳. 瓦斯涌出量与构造煤关联性预测研究[J]. 中国安全科学学报, 2019, 29(10): 105-109.

TIAN Shixiang, LIN Huaying, MA Ruishuai, XU Shiqing, ZENG Jianhua, YU Zhaoyang. Prediction of correlation between gas emission and tectonic coal[J]. China Safety Science Journal, 2019, 29(10): 105-109.

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瓦斯涌出量与构造煤关联性预测研究

Prediction of correlation between gas emission and tectonic coal

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