Study on reasonable drainage time of hydraulic punching borehole
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NETL
NSTL
维普
万方数据
为了研究水力冲孔后钻孔的合理抽采时间,分析了水力冲孔后瓦斯产出的规律,在一元径向流和质量守恒定律的基础上,建立了抽采时间与累计抽采量和抽采半径的关系方程,确定了钻孔合理抽采时间的研究方法.以中马村矿27001工作面为工程实例,实测了单孔瓦斯抽采量,拟合出不同时间的累计抽采量和抽采半径,分析表明,27001工作面水力冲孔后钻孔的合理抽采时间为90 d.
In order to study the reasonable drainage time after hydraulic flushing borehole,this paper analyzed the hydraulic flushing gas output rules,based on the laws of one-element radial flow and mass conservation,the relation equation of drainage time and total drainage volume and drainage radius was established to determine the reasonable drainage time.Taking 27001 work face in Zhongmacun Mine as the engineering background,the single hole gas drainage amount was measured,and the cumulative drainage amount and extraction radius at different time were fitted.The analysis results showed that the reasonable drainage time of hydraulic punching borehole was 90 days according to the geological conditions of 27001 work face.
NETL
NSTL
维普
万方数据
