| 利用SF6示踪技术测试煤层瓦斯抽采半径 |
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| 引用本文： | 辛明.利用SF6示踪技术测试煤层瓦斯抽采半径[J].安徽理工大学学报(自然科学版),2012(1):64-66. |
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| 作者姓名： | 辛明 |
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| 作者单位： | 淮南东辰集团恒力伟业公司 |
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| 摘 要： | 为了合理布置煤层抽放钻孔数量,采用SF6示踪技术测定煤层瓦斯抽采半径。沿煤层布置一排试验钻孔,选定其中某几个孔作为SF6释放孔,其余作为抽采试验孔,在一定的抽采负压条件下,通过观测抽采试验孔的瓦斯浓度随时间的变化情况,可以确定煤层瓦斯抽采半径。在朱集矿的试验中,通过一个月的连续观测,测得该矿11-2煤层瓦斯抽采半径可以达到5 m。利用SF6示踪气体可以较好的测定煤层瓦斯抽采半径。
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| 关 键 词： | 瓦斯抽采 示踪技术 抽采半径 |
Determination of Gas Extraction Radius in Coal Seams by Tracer Technique with SF6 |
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| XIN Ming.Determination of Gas Extraction Radius in Coal Seams by Tracer Technique with SF6[J].Journal of Anhui University of Science and Technology:Natural Science,2012(1):64-66. |
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| Authors: | XIN Ming |
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| Institution: | XIN Ming(Hengli Weiye Company,Dongcheng Group,HuaiNan Anhui 232001,China) |
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| Abstract: | In order to rationably determine the numer of boreholes for gas extraction in coal seams,gas extraction radius in coal seams was tested by using tracer technique with SF6.One row of testing boreholes in coal seam were performed,some of which are selected as SF6 releasing boreholes,the rest as gas extraction boreholes.Under certaine extraction depress in testing boreholes by observing gas concentration changes with time,gas extraction radius in coal seams was determined.In test in Zhuji Coal Mine,for one month of continuous observation,gas extraction radius in coal seam 11-2 was measured as 5 m.By using tracer technique with SF6,gas extraction radius in coal seams can be accurately determined. |
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| Keywords: | gas extraction tracer technique extraction radius |
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