School of Safety Engineering, China University of Mining and Technology

煤与瓦斯突出是煤矿中一种极其复杂的动力现象，主要表现为瓦斯窒息和煤粉冲击、掩埋，严重威胁煤矿的安全生产。揭示煤与瓦斯突出两相流运移规律及其主控因素，对于厘清突出发生致灾机理、指导现场防灾避灾具有重要意义。近年来，相关学者开展了大量的煤与瓦斯突出两相流试验和理论研究，并取得了丰硕的研究成果，本文就两相流模拟试验装置及国内外学者在突出两相流领域取得的研究成果2个方面进行总结与分析。首先，系统回顾了现有的煤与瓦斯突出两相流物理模拟试验装置，对比分析了不同试验装置的关键参数及功能优势；在此基础上，深入总结了突出煤粉流的运移速度、运移形态和堆积分布特征，以及突出冲击波的形成原因、传播速度和衰减规律；最后，重点梳理了巷道结构、瓦斯压力、煤粉粒径、地应力和气体组分等因素对突出两相流的影响和控制作用。分析认为，现阶段煤与瓦斯突出两相流研究呈现出突出过程可视化、巷道结构复杂化、数据采集多元化、影响因素全面化、研究手段多样化等特点，基本掌握了突出两相流的发生机理及传播致灾规律，但在相似体系（相似准则和相似材料）的建立和完善、两相流与通风系统共存互扰机制、两相流多因素耦合致灾机理、两相流“致灾−防控一体化”研究等方面仍需进一步深入探索。

Coal and gas outburst is an extremely complex dynamic phenomenon in coal mines. It is mainly manifested as gas suffocation, impact and burial of pulverized coal, which seriously threatens the safety production of coal mines. Revealing the migration law and main controlling factors of two-phase flow in coal and gas outburst is of great significance for clarifying the disaster-causing mechanism of outburst and guiding disaster prevention and avoidance on site. In recent years, relevant scholars have carried out a large number of coal and gas outburst two-phase flow test and theoretical research, and have achieved fruitful research results. This paper summarizes and analyzes the two-phase flow simulation test device and the research results obtained by domestic and foreign scholars in the two-phase flow field. Firstly, the existing two-phase flow physical simulation test devices for coal and gas outburst are systematically reviewed, and the key parameters and functional advantages of different test devices are compared and analyzed. On this basis, the migration velocity, migration pattern and accumulation distribution characteristics of outburst pulverized coal flow, as well as the formation reason, propagation velocity and attenuation law of outburst shock wave are summarized. Finally, the influence and control effect of roadway structure, gas pressure, coal particle size, ground stress and gas composition on outburst two-phase flow are analyzed. According to the analysis, the research on the two-phase flow of coal and gas outburst at the present stage shows the characteristics of visualization of outburst process, complexity of roadway structure, diversification of data collection, comprehensiveness of influencing factors and diversification of research methods, and basically grasps the occurrence mechanism and propagation and disaster-causing law of outburst two-phase flow. However, the establishment improvement of similar system (similar criteria and similar materials), the principle of coexistence and mutual interference of two-phase flow and ventilation system, the multi-factor coupling disaster-causing mechanism of two-phase flow, and the integration of disaster causing and prevention and control of two-phase flow still need further in-depth study.

国家自然科学基金资助项目（52274242，51904293）；国家级大学生创新计划训练资助项目（202110290007Z）

张超林，蒲静轩，宋世豪，等. 煤与瓦斯突出两相流运移规律研究进展[J]. 煤炭科学技术，2023，51（8）：129−139

ZHANG Chaolin，PU Jingxuan，SONG Shihao，et al. Research progress on the two-phase flow migration law of coal and gas outburst[J]. Coal Science and Technology，2023，51（8）：129−139