煤炭能源是我国经济繁荣可持续发展的绝对基础和重要支撑，随着我国多地煤矿逐渐进入深部高强开采阶段，伴随而来的诸多瓦斯动力灾害严重制约着矿井生产安全。本文以山西和顺某高瓦斯矿井煤层地质条件为原型，制备三种类型煤岩组合体模型，结合能量理论、分形理论开展了煤岩组合体单轴载荷条件下的力学及声发射特征实验，初步得到以下研究结果：

（1）利用自主研发的类煤岩材料试件定量化制备系统制作煤岩组合体试件，开展不同组合方式条件下煤岩组合体单轴压缩力学特征实验，获得了不同煤岩组合体试件的全应力应变曲线、破坏形态、抗压强度、峰值应变以及弹性模量的变化特征。

（2）运用高清摄像监测系统分析了不同组合条件下煤岩组合体全应力应变过程中的裂隙生成、扩展、发育、贯通行为，并基于MATLAB编写“计盒-关联”分形维数一体化综合分析软件处理裂隙演化图像，计算得到不同类型煤岩组合体不同应力阶段的分形维数，定量描述了试件静载破裂过程中裂隙网络的发育程度。

（3）采用声发射信号采集系统监测了不同组合条件下煤岩组合体变形破坏过程的声发射行为，结合煤岩组合体试件裂隙图像演化规律，采用声发射定位事件对裂隙渐进扩展特征进行反演，进一步分析了煤岩组合体变形破坏过程中应力变化与声发射参数及裂隙渐进扩展特征的演化关系。

（4）基于能量理论研究了不同类型煤岩组合体试件单轴压缩变形破坏过程中的能量转化规律、储能特性及能耗特征，分析了能量驱动条件下煤岩组合体试件破坏机制及裂隙渐进演化耦合规律，进一步探讨了工程实践中煤岩系统变形破坏特征。

通过上述研究，本文分析了不同类型煤岩组合体静载破裂过程中的声发射行为、破坏形态以及能量驱动条件下的裂隙渐进演化规律，对矿井动态灾害的防治等现场工程实践问题提供了重要的理论支撑。

Coal is the absolute foundation and important support for the sustainable development of China's economic. As coal mines in many parts of China gradually enter the deep mining stage, the accompanying coal and gas protrusion, impact ground pressure and many other dynamic hazards seriously restrict the mine production safety. In this paper, three types of coal-rock composite models were prepared based on the geological conditions of a high gas mine seam in Heshun, Shanxi Province. The mechanical and acoustic emission characteristics experiments of coal-rock composite specimens under uniaxial loading conditions were carried out by combining energy and fractal theory, and the following results were obtained.

(1) The coal-rock composite specimens were prepared by the self-developed quantitative preparation system of coal-rock-like material specimens. To obtain the full stress-strain curve, damage pattern, compressive strength, peak strain and elastic modulus variation characteristics of different coal-rock composite specimens. Uniaxial compression mechanical property experiments were carried out with coal-rock composite specimens under different combination methods

(2) The crack generation, extension, development and penetration behavior of different coal-rock composite specimens during the full stress-strain process were analyzed using a high-definition camera monitoring system. The "box-correlation" fractal dimension integrated analysis software based on MATLAB was written to process the crack evolution images and calculate the fractal dimension of different coal-rock composite specimens at different stress stage. The development degree of fracture network in the process of static load rupture of the specimen is quantitatively described.

(3) The acoustic emission behavior of coal-rock combination deformation and damage process under different combination conditions was monitored by acoustic emission signal acquisition system. The evolution of crack image of coal-rock combination specimen was combined with the inversion of crack progressive expansion characteristics by using acoustic emission localization events. The evolution relationship between stress change and acoustic emission parameters and crack progressive expansion characteristics during deformation and damage of coal-rock combination was further analyzed.

(4) Based on the energy theory, the energy conversion law, energy storage and energy dissipated characteristics during uniaxial compression deformation damage of different types of coal-rock composite specimens are studied. The damage mechanism of coal-rock composite specimens and the coupling law of crack progressive evolution under energy-driven conditions are analyzed. The deformation damage characteristics of coal-rock systems in engineering practice are further discussed.

Through the above research, this paper analyzed the acoustic emission behavior, damage morphology during the static load rupture of different types of coal-rock combinations and the crack progressive evolution law under energy-driven conditions, which provided important theoretical support for the prevention and control of dynamic mine disasters and other field engineering practice problems.

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