In this study, we systematically studied the occurrence regularity of in situ stress in the Pingdingshan mine. The critical criterion model of coal-rock destabilization was established based on the theoretical framework of fracture mechanics. Furthermore, we analyzed the coupling destabilization mechanism of in situ stress and gas and studied the influence of the variation between original rock stress and mining-induced stress on the critical criterion. Through field experiments and applications, we established a three-dimensional gas drainage technology system for areas with a large mining height and long work face. Based on our research, a demonstration project was developed for deep mine dynamic disaster control. The technical system included the arrangement and optimization of pre-drainage holes along the coal seam, technology, and optimization of gas drainage through the bottom drainage tunnel and upper corner, gas drainage technology through sieve tubes, and a two plugging with one injection under pressure sealing technology. The implementation of the demonstration project effectively reduced the gas content and pressure of the coal seam in the deep mine, and the project increased the critical strength of the instability and failure of coal and rock.

本研究系统研究了平顶山矿区地应力的发生规律。基于断裂力学理论框架，建立了煤岩失稳临界准则模型。此外，我们分析了原位耦合失稳机制应力和瓦斯，研究了原始岩石应力和采矿应力之间的变化对临界准则的影响。通过现场试验和应用，建立了大采高、长工作面地区三维瓦斯抽采技术体系。基于我们的研究，开发了深部矿井动态灾害控制示范项目。技术体系包括沿煤层预抽孔布置及优化、底部抽采巷道及上角瓦斯抽采技术及优化、筛管抽采瓦斯技术、带压一注两堵密封技术。