我国煤炭资源储量丰富，煤炭资源在未来一定时期内仍然是我国经济繁荣发展的重要保障。然而，随着我国矿井逐步进入深部高强开采阶段，矿井灾害事故多发，严重制约矿井安全生产。本文基于内蒙古自治区某高瓦斯矿井煤层赋存特征，制作含构造煤组合体试件，开展含构造煤组合体加载破裂过程力学特性、红外辐射、声发射及渗透特性测试实验，得到以下结论：

（1）利用高低频冲击力学仪和高清摄像系统对含构造煤组合体开展力学特性测试实验，得到含构造煤组合体试件的抗压强度、弹性模量及裂隙起裂应力随构造煤厚占比的增加均呈现出不断减小的变化趋势，试件的峰值应变、裂隙扩展时间及裂隙率随构造煤厚占比的增加均呈现出不断增加的变化趋势；结合分形理论，对含构造煤组合体试件进行二值化处理，得到试件的分形维数普遍分布在1.1437~1.2052之间。

（2）通过Fotric223s型红外热像仪和PCI-8型声发射信号采集系统对含构造煤组合体开展红外辐射、声发射测试实验，得到含构造煤组合体试件在临近失稳破坏时，试件的表面最高红外辐射温度和声发射振铃计数均发生突增，最高红外辐射温度和声发射振铃计数的最大值均随构造煤厚占比的增加不断降低，其变化范围分别为5.9℃~1.1℃和3.24×10⁴~1.99×10⁴。

（3）运用煤岩芯渗透率自动测试仪对含构造煤组合体开展渗透特性测试实验，得到含构造煤组合体试件的渗透率与轴压、围压、气体压力均呈负相关；含构造煤组合体试件的渗透率受围压影响程度大于轴压，且相同应力加载条件下，全构造煤试件对应力的响应更明显；结合含构造煤组合体试件加载过程裂隙与应力之间的演化关系，探讨了含构造煤组合体的渗透率与各力学加载环境之间的相互作用特征。

通过上述研究，本文得到了含构造煤组合体加载破裂过程的裂隙、红外辐射、声发射演化特征以及不同因素水平影响下的渗透特性，研究结果可对卸压瓦斯抽采及矿井瓦斯灾害防治提供一定的理论基础。

China is rich in coal resources, and coal resources will remain an important guarantee for China's economic prosperity and development in a certain period of time in the future. However, as the mine gradually enters the stage of deep high-strength mining, mine disasters and accidents occur frequently, which seriously restricts the safe production of the mine. Based on the occurrence characteristics of coal seam in a high gas mine in Inner Mongolia Autonomous Region, this paper makes the specimens of containing tectonic coal combination, and carries out the mechanical properties, infrared radiation, acoustic emission and permeability test experiments of containing tectonic coal combination loading and fracture process. The following conclusions are obtained :

(1) Using high and low frequency impact mechanics instrument and high-definition camera system to test the mechanical properties of containing tectonic coal combination, we obtained that the compressive strength, elastic modulus and fracture initiation stress of containing tectonic coal combination specimens showed a decreasing trend with the increase of tectonic coal thickness, and the peak strain, fracture expansion time and fracture rate of specimens showed an increasing trend with the increase of tectonic coal thickness. The fractal dimension values of the specimens were generally distributed between 1.1437 and 1.2052 by binarizing the specimens with the fractal theory.

(2) Through the Fotric223 s infrared thermal imager and PCI-8 acoustic emission signal acquisition system, the infrared radiation and acoustic emission test experiments were carried out on the combined body containing tectonic coal. It was found that when the combined body containing tectonic coal was near the instability failure, the maximum infrared radiation temperature and acoustic emission ringing count of the surface of the specimen increased sharply. The maximum infrared radiation temperature and the maximum acoustic emission ringing count decreased with the increase of the proportion of tectonic coal thickness, and the variation range was 5.9℃~1.1℃and 3.24×10⁴~1.99×10⁴, respectively.

(3) The permeability test experiment of containing tectonic coal combination was carried out by using the automatic permeability tester of coal and rock core. The permeability of containing tectonic coal combination specimens were negatively correlated with axial pressure, confining pressure and gas pressure. The permeability of the containing tectonic coal combination specimens are more affected by confining pressure than axial pressure, and the response of the whole tectonic coal specimen to stress is more obvious under the same stress loading condition. Combined with the evolution relationship between cracks and stress in the loading process of the containing tectonic coal combination specimens, the interaction characteristics between the permeability of the containing tectonic coal combination specimens and various mechanical loading environments are discussed.

Through the above research, this paper obtained the fracture, infrared radiation, acoustic emission evolution characteristics and permeability characteristics under the influence of different factor levels in the loading and fracture process of containing tectonic coal combination. The research results can provide a theoretical basis for pressure relief gas drainage and mine gas disaster prevention.

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