TY - JOUR AU - NGUYEN Van Thinh AU - NGUYEN Cao Khai AU - NGUYEN Van Quang AU - NGUYEN Cao Khai AU - TRAN Xuan Ha PY - 2022/01/13 Y2 - 2024/03/28 TI - Determination of methane content at Maokhe coal mine from curent mining to -450 level in Vietnam JF - Inżynieria Mineralna JA - IM VL - 2 IS - 2 SE - DO - 10.29227/IM-2019-02-51 UR - https://inzynieriamineralna.com.pl/index.php/testowe/article/view/290 AB - Methane gas is one of the most serious dangers of undergroundcoal mining as its buildup can lead to methane gas explosion. InQuangNinh province- Vietnam, several coal mines such as TrangKhe II-IIIcoal mine, Khe Cham coal mine, especially MaoKhe mine that have highmethane content. At the MaoKhe coal mine,experimental data showedthatthe concentration of methane in coal seams at different depths were notsimilar.In order to ensure safety, this report has been undertaken todetermine a pattern of changing methane contents of coal seams atdifferent exploitation depths in MaoKhe underground coal mine. ER -