祁南煤矿714综采面瓦斯综合治理措施及应用

Integrative Measures of Gas Prevention and Application at No.714 Fully-Mechanized Coal Face in Qinan Coal Mine

煤层瓦斯一直是制约高瓦斯工作面安全高产高效的主要因素。针对祁南煤矿714工作面煤层瓦斯地质条件,创造性地提出了综合利用前方煤体卸压边采边抽、顶板走向高位钻孔抽放、采空区埋管抽放、上隅角插管抽放和煤层浅孔动压注水措施,有效地抽放了瓦斯,杜绝了上隅角超限,保证了工作面安全高产高效。

Gas in coal seam is always one of the most important factors to restrict production in the high gas face. Airnming at the gas - geological condition of No.714 coal face in Qinan Coal Mine, some measures are creatively promoted, which combine coal mining while gas drainage in ahead unload coal, high gas- drainage holes in roof on strike, buries pipes in gob to drainage gas, plugs drainage pipes in top comer and injects water into coal using fiat holes. Most gas is effectively drained. The gas over- limitation is stopped. The high yield and high efficiency at face is ensured.