摘要
根据抽采目标即防止瓦斯浓度超限,运用抽采量和抽采时间的关系,结合抽采衰减负指数曲线积分数学修正计算得出抽采钻孔在不同抽采时间下的有效抽采半径,从而可根据工作面推进速度在不同的区域合理优化布置钻孔间距。
According to the extraction purpose of preventing gas concentration overrun, using the relationship of gas extraction quantity and quantity time, combining with extraction attenuation negative exponential curve integral mathematical correction, the effective ex- traction radius in different extraction times is calculated, which optimizes the drilling spacing in different areas according to the digging speed.
出处
《煤矿安全》
CAS
北大核心
2013年第5期4-6,共3页
Safety in Coal Mines
关键词
顺层钻孔
抽采半径
抽采量
钻孔参数
抽采时间
bedding hole
extraction radius
gas drainage quantity
drilling parameter
gas drainage time
