Coal seam gas drainage is not only the effective measure for gas outbursts control, but also has the great significance for the use of gas energy and reduction of greenhouse-gas emissions. Coal permeability is the key parameter of gas drainage, and the permeability model of mining-damaged coal has the important theoretical guidance value for gas drainage in low permeability coal seams. In order to better understand the permeability model of damaged coal, the key points during the establishment of permeability model, which are the selection of coal structure, selection of boundary conditions and influencing factors, were first analyzed. Then, the expression and application of permeability models of mining-damaged coal in recent 20 years were reviewed. According to the contribution of new fractures, the permeability models of mining-damaged coal were divided into the empirical permeability models (EPM), volumetric strain permeability models (VSPM), plastic strain permeability models (PSPM) and damage variable permeability models (DVPM). After that, the quantitative characterization of key parameters, scientific issues of permeability models of mining-damaged coal were reviewed and discussed. Finally, the prioritization of 18 indexes affecting the permeability were determined, and the potential research directions of permeability models of mining-damaged coal were pointed out. The results of this paper can provide the theoretical guidance for the improvement of permeability model of mining-damage coal in the future.

煤层瓦斯抽放不仅是控制瓦斯突出的有效措施，而且对瓦斯能源的利用和温室气体减排具有重要意义。煤炭渗透率是瓦斯抽采的关键参数，采损煤渗透率模型对低渗透煤层瓦斯抽采具有重要的理论指导价值。为了更好地理解受损煤的渗透率模型，首先分析了建立渗透率模型的关键点，即煤的结构选择、边界条件的选择和影响因素。然后对近20年采损煤渗透率模型的表达和应用进行了综述。根据新骨折的贡献，采损煤渗透率模型分为经验渗透率模型（EPM）、体积应变渗透率模型（VSPM）、塑性应变渗透率模型（PSPM）和损伤变量渗透率模型（DVPM）。随后，对关键参数的定量表征、采损煤渗透率模型的科学问题进行了回顾和讨论。最后确定了影响渗透率的18个指标的优先级，指出了采损煤渗透率模型的潜在研究方向。研究结果可为今后矿害煤渗透率模型的改进提供理论指导。塑性应变渗透率模型 (PSPM) 和损伤变量渗透率模型 (DVPM)。随后，对关键参数的定量表征、采损煤渗透率模型的科学问题进行了回顾和讨论。最后确定了影响渗透率的18个指标的优先级，指出了采损煤渗透率模型的潜在研究方向。研究结果可为今后矿害煤渗透率模型的改进提供理论指导。塑性应变渗透率模型 (PSPM) 和损伤变量渗透率模型 (DVPM)。随后，对关键参数的定量表征、采损煤渗透率模型的科学问题进行了回顾和讨论。最后确定了影响渗透率的18个指标的优先级，指出了采损煤渗透率模型的潜在研究方向。研究结果可为今后矿害煤渗透率模型的改进提供理论指导。确定了影响渗透率的18个指标的优先级，指出了采损煤渗透率模型的潜在研究方向。研究结果可为今后矿害煤渗透率模型的改进提供理论指导。确定了影响渗透率的18个指标的优先级，指出了采损煤渗透率模型的潜在研究方向。研究结果可为今后矿害煤渗透率模型的改进提供理论指导。