五阳煤矿本煤层瓦斯超前采动卸压抽采试验

发布时间：2018-06-05 20:45

本文选题：采矿工程 + 本煤层　；参考：《煤矿安全》2017年02期

【摘要】：为了研究工作面超前支承压力对本煤层瓦斯采动卸压抽采的影响规律,在五阳煤矿7801工作面进行了试验研究;结果表明:工作面超前支承压力对本煤层瓦斯采动卸压抽采效果具有明显的影响作用,根据本煤层瓦斯抽采钻孔距工作面的位置,钻孔瓦斯抽采效果可划分为4个阶段:原始抽采阶段、超前影响抽采减弱阶段、超前影响抽采增长阶段和抽采衰减阶段。其中,超前影响抽采增长阶段和抽采衰减阶段为本煤层瓦斯超前采动卸压抽采的有效阶段,采用顺层平行钻孔抽采时,工作面前方25.8 m以内范围为有效抽采区域,该区域内瓦斯抽采量占顺层平行钻孔抽采总量的61.75%;采用顺层斜向钻孔抽采时,工作面前方44.8 m以内范围为有效抽采区域,该区域内瓦斯抽采量占顺层斜向钻孔抽采总量的37.89%。
[Abstract]:In order to study the influence of the advance bearing pressure on the coal seam gas mining pressure relief extraction, the experimental study was carried out in 7801 face of Wuyang Coal Mine. The results show that the pressure-relief effect of gas mining in this coal seam is obviously influenced by the leading supporting pressure of the coal face. According to the location of the gas drainage borehole in the coal seam from the working face, The effect of borehole gas extraction can be divided into four stages: the original extraction stage, the leading influence on the drainage weakening stage, the advance influence on the drainage growth stage and the drainage attenuation stage. Among them, the stage of ahead influence on drainage growth and the stage of drainage attenuation are the effective stage of coal seam gas extraction in advance, and the effective extraction area is within 25.8 m in front of the face when the horizontal parallel borehole is used to extract the coal seam. The amount of gas extraction in this area accounts for 61.75% of the total amount of drainage in parallel boreholes, and the effective drainage area is within 44.8 m in front of the face when the inclined borehole is used. The amount of gas extraction in this area accounts for 37.89% of the total amount of the slanting borehole drainage in the down-bed.
【作者单位】：中国矿业大学(北京)资源与安全工程学院;中国矿业大学煤炭资源与安全开采国家重点实验室;潞安环能股份有限公司五阳煤矿;
【基金】：煤炭资源与安全开采国家重点实验室开放课题资助项目(SKLCRSM16KFB08) 国家自然科学基金面上资助项目(51474220) 中央高校基本科研业务费专项资金资助项目(2011QZ03)
【分类号】：TD712.6

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