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| Chinese National Standard Category: Hygiene, safety and labor protection |
| English Title: | The direct measuring method of the coal seam gas drainage radius in coal mine—Method of drainage volume |
| Chinese Title: | 煤矿井下煤层瓦斯抽采半径直接测定方法 抽采量法 |
| Standard No.: | GB/T 42638-2023 |
| Category No.: | D09 |
| Issued by: | SAMR; SAC |
| Issued on: | 2023-05-23 |
| Implemented on: | 2023-12-1 |
| Status: | valid |
| Superseded by: | |
| Superseded on: | |
| Abolished on: | |
| Superseding: | |
| Word Count: | 8500 words |
| Similar Standards: | DB37/T 1696-2020 MT 626-1996 MT/T 1035-2007 MT/T 1085-2008 MT/T 1189-2020 MT/T 1084-2008 GB/T 8160-1987 DB37/T 4295-2020 MT/T 704-2008 MT/T 1036-2007 MT/T 703-2008 NB/T 10367-2019 GB 24502-2023 GB 43066-2023 DB11/T 1252-2023 KA/T 1-2023 GB/T 42638-2023 MT/T 1198-2023 AQ/T 1121-2023 AQ/T 1123-2023 |
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