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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 reasonably design pumping borehole, the radius of influence of borehole drilling through borehole and borehole drainage is calculated through field test and numerical calculation, and the reason of the difference is analyzed. The results show that both the radius of influence and extraction time of drainage borehole are in exponential relationship, but the influence radius of borehole drainage is much larger than the radius of borehole drilling. This is of great importance to the design of pumping holes.