为了研究布孔间距对应力叠加效应的影响规律并分析其对钻孔冲煤量的影响，结合九里山煤矿矿区概况及穿层钻孔施工的实际情况，利用模拟软件COMSOL建立了固体力学模型，研究了多钻孔布置时，不同布孔间距下的应力叠加效应，分析了九里山煤矿二₁煤层钻孔冲煤量实际情况。研究结果表明：当应力集中峰前区叠加时，叠加区附近的应力值随布孔间距减小而变大；当应力集中峰后区及卸压区叠加时，叠加区附近的应力值降低，两侧应力数值仍升高；布孔数量通过影响煤体扰动次数可导致叠加效应程度变大，“三花孔”布置应力呈圆形分布并通过增大受力面积致使叠加效应程度会相对减弱；在应力叠加区施工钻孔，钻孔冲煤量往往较大且有可能发生失稳。

In order to study the rules of stress superposition effect and analyze the influence on the punching coal amount by borehole spacing, according to the general situation of Jiulishan Coal Mine and the actual situation of through-bed drilling construction, a solid mechanics model was established by using simulation software COMSOL. We mainly studied the stress superposition effect under different borehole spacings when multiple boreholes are arranged, and analyzed the actual situation of punching coal amount in II₁ coal seam of Jiulishan Coal Mine. The results show that when the pre-peak area of stress concentration is superimposed, the stress value near the superimposed area increases with the decrease of hole spacing; when the post-peak area of stress concentration and the pressure relief area are superimposed, the stress values near the superimposed area decrease, but the stress values on both sides still increase; the number of boreholes can lead to a greater degree of superposition effect by affecting the number of coal disturbance, and the stress of the layout of three holes is circular distribution, and the degree of superposition effect will be weakened by increasing the force area; when drilling in the area of stress superposition, the punching coal amount of drilling is often large and instability may occur.