江西煤炭科技
江西煤炭科技
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JIANGXI COAL SCIENCE & TECHNOLOGY
2012年
2期
109-111
,共3页
封孔深度%钻屑法%瓦斯抽放
封孔深度%鑽屑法%瓦斯抽放
봉공심도%찬설법%와사추방
hole sealing depth%method of drilling bits%gas suction
确定合理的封孔深度就是要最大限度抽出煤体中赋存的瓦斯,同时有利于瓦斯的抽采和煤体卸压。通过钻屑法确定合理封孔深度,既能保证最大限度抽出煤体中赋存的瓦斯,又有利于煤层内瓦斯抽放管路的不致于煤体卸压而压裂。
確定閤理的封孔深度就是要最大限度抽齣煤體中賦存的瓦斯,同時有利于瓦斯的抽採和煤體卸壓。通過鑽屑法確定閤理封孔深度,既能保證最大限度抽齣煤體中賦存的瓦斯,又有利于煤層內瓦斯抽放管路的不緻于煤體卸壓而壓裂。
학정합리적봉공심도취시요최대한도추출매체중부존적와사,동시유리우와사적추채화매체사압。통과찬설법학정합리봉공심도,기능보증최대한도추출매체중부존적와사,우유리우매층내와사추방관로적불치우매체사압이압렬。
Determining the reasonable hole sealing depth is helpful for the gas suction and pressure release in seam body. The paper introduces the method of drilling bits to determine the reasonable hole sealing depth, which not only guarantees the utmost gas suction from seam body, but only avoid the fracturing of gas suction line.
