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- W2351287788 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." @default.
- W2351287788 created "2016-06-24" @default.
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- W2351287788 date "2012-01-01" @default.
- W2351287788 modified "2023-09-23" @default.
- W2351287788 title "Determination of Gas Extraction Radius in Coal Seams by Tracer Technique with SF_6" @default.
- W2351287788 hasPublicationYear "2012" @default.
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