江西煤炭科技
江西煤炭科技
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JIANGXI COAL SCIENCE & TECHNOLOGY
2014年
4期
1-4
,共4页
深立井%揭煤%低透气性%瓦斯
深立井%揭煤%低透氣性%瓦斯
심립정%게매%저투기성%와사
deep vertical well%uncovering coal%low permeability%gas
随着我国煤炭地下开采水平的提高，煤炭开采深度加大，深立井井筒的建设工程逐年增多，深部煤层的透气性低、瓦斯压力大等增加了立井施工困难。本文以顾桥矿深部进风井井筒揭穿6＃煤层为例，提出并采用了扩孔、深孔爆破以及边抽边掘综合防突技术，瓦斯抽采纯量提高了1～2倍，煤层瓦斯含量由12.7 m3/t降低至0.38 m3/t ，瓦斯压力由5 M Pa降低至0.53 M Pa ，有效地消除了煤层的突出危险性，保障了工作面安全高效揭穿突出煤层。
隨著我國煤炭地下開採水平的提高，煤炭開採深度加大，深立井井筒的建設工程逐年增多，深部煤層的透氣性低、瓦斯壓力大等增加瞭立井施工睏難。本文以顧橋礦深部進風井井筒揭穿6＃煤層為例，提齣併採用瞭擴孔、深孔爆破以及邊抽邊掘綜閤防突技術，瓦斯抽採純量提高瞭1～2倍，煤層瓦斯含量由12.7 m3/t降低至0.38 m3/t ，瓦斯壓力由5 M Pa降低至0.53 M Pa ，有效地消除瞭煤層的突齣危險性，保障瞭工作麵安全高效揭穿突齣煤層。
수착아국매탄지하개채수평적제고，매탄개채심도가대，심립정정통적건설공정축년증다，심부매층적투기성저、와사압력대등증가료립정시공곤난。본문이고교광심부진풍정정통게천6＃매층위례，제출병채용료확공、심공폭파이급변추변굴종합방돌기술，와사추채순량제고료1～2배，매층와사함량유12.7 m3/t강저지0.38 m3/t ，와사압력유5 M Pa강저지0.53 M Pa ，유효지소제료매층적돌출위험성，보장료공작면안전고효게천돌출매층。
With the improvement of the level of underground coal mining and the increasing depth of coal mining , deep vertical well construction projects increased year by year ,the construction difficulties increased due to low permeability and large gas pressure of deep coal seam .Taking the uncovering of 6# coal seam in deep intake shaft in Guqiao Colliery for example ,the paper put forward the integrated outburst prevention technology of bore en-larging ,deep hole blasting and gas draining w hile driving .T he amount of gas drainage has increased by 1 to 2 times ,gas content reduced from 12 .7 m3/t to 0 .38 m3/t and the gas pressure reduced from 5 M Pa to 0 .53 M Pa in the coal seam ,w hich eliminated the risk of outburst coal seam and ensured the uncovering outburst coal seam safely and efficiently in the face .
