穿层钻孔与顺层钻孔抽采半径的差异性分析

Analysis Difference of Drainage Radium between Crossing Hole and Drilled Hole along Seam

为了合理设计抽采钻孔,通过现场测试结合数值计算得出穿层抽采钻孔和顺层抽采钻孔的影响半径,并分析了其差异性的原因。研究结果表明:抽采钻孔的影响半径与抽采时间之间均符合指数关系,但顺层抽采钻孔影响半径远大于穿层钻孔影响半径。这对抽采钻孔的设计具有重要的指导意义。

In order to design the drainage hole rational, the drainage effective radium is tested by spot and numerical simulation, and the difference reason of them is studied. The results show that drainage radium is the power relationship with drainage time. But the drainage radium of hole drilled along seam are longer than that of crossing hole. It is significance important to design the drainage holes.