This study was conducted to address the rock burst problem caused by serious stress concentrations in coal seams. Based on the principle of inducing agent corrosion affecting coal components to soften coal, different inducers were selected to study the desensitization effect of acid leaching induction on coal components. The microscopic behavior characteristics of coal under acid leaching were analyzed, and the qualitative and quantitative laws were obtained for different acid leaching times and microscopic behavior characteristics. The results show the following: (1) The mixed acid solution as an inducer has the effect of immersion, dissolution, and fracture on coal. During the reaction process, the internal pores of the coal expand, and the height of the external liquid decreases. The mixed acid solution had the best effect in terms of the removal of minerals in coal. (2) Under microscopic conditions, the internal crack width of the coal body expanded several times after mixed acid soaking; the difference in the unevenness before and after compression fracture was stable at 25–27%, and the mixed acid expanded the gap in the coal. (3) This practical study shows that the characterization changes of the mixed acid solution, injected into the borehole, combines the characteristics of the citric acid and phosphoric acid solution. The minerals around the borehole are dissolved, and the debris fuses with the solution. The liquid is viscous and forms a film on the surface of the solution. The mixed acid has a more obvious effect on the immersion and dissolution of coal.

本研究旨在解决煤层严重应力集中引起的岩爆问题。根据诱导剂腐蚀影响煤组分软化煤的原理，选择不同的诱导剂研究酸浸诱导对煤组分的脱敏作用。分析了酸浸条件下煤的微观行为特征，得出了不同酸浸时间和微观行为特征的定性和定量规律。结果表明： (1) 混合酸溶液作为诱导剂对煤具有浸、溶、裂作用。在反应过程中，煤的内部孔隙扩大，外部液体的高度降低。混合酸溶液对煤中矿物质的去除效果最好。(2)微观条件下，混酸浸泡后煤体内部裂缝宽度扩大数倍；压缩断裂前后的不均匀度差异稳定在25-27%，混合酸扩大了煤中的间隙。(3) 实际研究表明，注入钻孔的混合酸溶液的表征变化结合了柠檬酸和磷酸溶液的特性。钻孔周围的矿物质被溶解，碎片与溶液融合。液体是粘稠的，在溶液表面形成一层薄膜。混合酸对煤的浸溶作用更为明显。混酸浸泡后煤体内部裂缝宽度扩大数倍；压缩断裂前后的不均匀度差异稳定在25-27%，混合酸扩大了煤中的间隙。(3) 实际研究表明，注入钻孔的混合酸溶液的表征变化结合了柠檬酸和磷酸溶液的特性。钻孔周围的矿物质被溶解，碎片与溶液融合。液体是粘稠的，在溶液表面形成一层薄膜。混合酸对煤的浸溶作用更为明显。混酸浸泡后煤体内部裂缝宽度扩大数倍；压缩断裂前后的不均匀度差异稳定在25-27%，混合酸扩大了煤中的间隙。(3) 实际研究表明，注入钻孔的混合酸溶液的表征变化结合了柠檬酸和磷酸溶液的特性。钻孔周围的矿物质被溶解，碎片与溶液融合。液体是粘稠的，在溶液表面形成一层薄膜。混合酸对煤的浸溶作用更为明显。混合酸扩大了煤中的空隙。(3) 实际研究表明，注入钻孔的混合酸溶液的表征变化结合了柠檬酸和磷酸溶液的特性。钻孔周围的矿物质被溶解，碎片与溶液融合。液体是粘稠的，在溶液表面形成一层薄膜。混合酸对煤的浸溶作用更为明显。混合酸扩大了煤中的空隙。(3) 实际研究表明，注入钻孔的混合酸溶液的表征变化结合了柠檬酸和磷酸溶液的特性。钻孔周围的矿物质被溶解，碎片与溶液融合。液体是粘稠的，在溶液表面形成一层薄膜。混合酸对煤的浸溶作用更为明显。液体是粘稠的，在溶液表面形成一层薄膜。混合酸对煤的浸溶作用更为明显。液体是粘稠的，在溶液表面形成一层薄膜。混合酸对煤的浸溶作用更为明显。