低溫對(duì)煤中瓦斯放散的抑制作用
發(fā)布時(shí)間:2018-01-17 16:11
本文關(guān)鍵詞:低溫對(duì)煤中瓦斯放散的抑制作用 出處:《煤礦安全》2016年06期 論文類型:期刊論文
更多相關(guān)文章: 煤層瓦斯含量 低溫取樣 抑制作用 瓦斯吸附 瓦斯解吸
【摘要】:針對(duì)煤礦井下瓦斯含量測(cè)定中煤樣溫度過(guò)高、瓦斯放散量過(guò)多導(dǎo)致?lián)p失量推算出現(xiàn)偏差,使煤層瓦斯含量測(cè)值不準(zhǔn)確的問(wèn)題,基于煤的瓦斯放散速度隨溫度升高而增加的性質(zhì),提出了低溫(0℃以下)取煤樣的方法,以期通過(guò)抑制瓦斯的放散來(lái)提高瓦斯含量測(cè)值的準(zhǔn)確性。結(jié)合實(shí)驗(yàn)室現(xiàn)有條件,設(shè)計(jì)了低溫條件下煤的吸附/解吸實(shí)驗(yàn)。結(jié)果表明,低溫取樣可以增加煤對(duì)瓦斯的吸附性能,減慢瓦斯放散速度,尤其是對(duì)解吸初期影響較大,低溫對(duì)煤中的瓦斯放散具有抑制作用。
[Abstract]:Aiming at the problem that the coal sample temperature is too high and the gas exhalation amount is too high in the coal mine, the calculation of the loss quantity is deviated, which makes the measurement value of the coal seam gas content inaccurate. Based on the property that the gas release velocity of coal increases with the increase of temperature, the method of sampling coal samples at low temperature below 0 鈩,
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