针对五虎山煤矿煤层透气性差、瓦斯吸附性强导致钻孔抽采效果差、抽采率低的问题，采用物理模拟和现场试验的方法，数值模拟水力造穴前后钻孔参数的变化特征，进而优化出适合该矿的瓦斯抽采钻孔布置方式。结果表明：五虎山煤矿011006工作面在符合矿上生产接续的情况下，水力造穴的最优钻孔造穴直径为0.5 m，合理布设间距为4 m；采用水力造穴工艺时瓦斯抽采体积分数平均为70.4%，达普通钻孔平均体积分数的3.8倍，抽采纯量是普通钻孔的3.5倍；采用水力造穴优化参数与普通钻孔间隔布置方式，可有效激活间隔的普通钻孔；通过对比钻孔施工卸压增透效果、瓦斯抽采效率、煤体扰动面积、体积及钻孔成孔率等评价指标，在相同面积模块下，采用间隔布设钻孔的模块2瓦斯抽采纯量达到模块1的1.8倍。

For the problems that poor gas permeability and strong gas adsorption in the coal seams of Wuhushan Coal Mine leads to poor drilling and extraction efficiency and low extraction rate, physical simulation and on-site testing methods were used to numerically simulate the changes in drilling parameters before and after hydraulic drilling, and then optimize a suitable gas extraction drilling layout for the mine. The results show that under the condition that the 011006 working face of Wuhushan Coal mine is consistent with the production continuity in the mine, the optimal diameter of hydraulic cavitation is 0.5 m and the reasonable layout interval is 4 m; the average volume fraction of gas extraction is 70.4%, which is 3.8 times of the average volume fraction of ordinary borehole and 3.5 times of pure gas extraction; using the hydraulic cavitation optimization parameters and the arrangement of ordinary boreholes can effectively activate the ordinary boreholes at intervals; by comparing the evaluation indexes such as the pressure relief and permeability improvement effect of borehole construction, gas extraction efficiency, disturbed area of coal body, volume and hole formation rate of boreholes, under the same area module, the gas extraction pure quantity of module 2 using the spaced borehole arrangement is 1.8 times that of module 1.