随着浅部赋存煤炭资源的日益枯竭，深部开采已经成为煤炭资源开发的新常态。深部高温高湿的热环境将危害作业人员健康，增加机电设备故障率，极易引发井下安全事故。高温围岩作为采煤工作面的最主要热源之一，长期以来其散热量计算依赖于拟合经验式，缺乏科学合理的计算方法。基于傅里叶定律和能量守恒定律，建立了采煤工作面二维围岩温度场非稳态数学模型，运用有限体积法对模型进行了离散，提出了以坐标间断移动来模拟实际割煤进刀过程的循环推进新算法，显著提高了动态推进条件下高温采煤工作面围岩散热的计算精度。随后以单个节点为例详细介绍了循环推进算法流程，基于Visual Studio编程平台自主开发了数值解算程序，并结合工程背景开展了采煤工作面高温围岩温度场及散热规律的数值模拟研究与实测验证工作。结果表明：模拟结果与现场实测数据变化趋势基本一致，平均相对误差为6.15%；在连续循环割煤过程中，围岩温度场呈现周期性变化特征;在一个循环周期内，各区域围岩散热强度在进刀循环开始时达到峰值，随后不稳定换热系数开始快速下降，且下降趋势逐渐减缓；传统的拟合经验式忽略了割煤循环过程中围岩散热强度随时间的改变，高估了围岩散热能力；在热害严重的采煤工作面，通过适当减缓进刀速度或采用截深更浅的采煤机刀头可有效减少围岩散热。

With the increasing depletion of shallow coal resources, deep mining has become the new normal for coal resources development. The high temperature and high humidity thermal environment in deep mines jeopardizes the health of operators, increases the failure rate of electromechanical equipment, and is very likely to cause safety accidents underground. As one of the most important heat sources in the coal mining face, the heat dissipation calculation of high-temperature surrounding rock has long relied on fitting empirical equations and lacks a scientific and reasonable calculation method.Based on Fourier's law and the law of energy conservation, a two-dimensional non-stationary mathematical model of surrounding rock temperature field in the coal mining face was established, and the model was discretized by the finite volume method. Then a new algorithm of cyclic advancing was proposed to simulate the actual coal cutting process by the intermittent movement of the coordinates, which significantly improves the calculation accuracy of heat dissipation of high-temperature surrounding rock in coal mining face under dynamic advancing conditions. Subsequently, the cyclic advancing algorithm process was introduced in detail with a single node as an example, and the numerical solution program was developed independently based on the Visual Studio programming platform. Finally, we carried out numerical simulation and verification of the temperature field and heat dissipation law of the high-temperature surrounding rock in the coal mining face in conjunction with the engineering background. The results show that: the simulation results are basically consistent with the trend of the field measured data, and the average relative error of the model is 6.15%. During the continuous cycle of coal cutting, the temperature field of the surrounding rock shows the characteristics of cyclic change. Within a cycle, the heat dissipation intensity of the surrounding rock in each region reaches the peak at the beginning of the coal cutting cycle, then the unstable heat transfer coefficient begins to fall rapidly, and the downward trend gradually slows down. The traditional fitting empirical formula neglects the change of the heat dissipation intensity of surrounding rock with time in the process of coal cutting cycle, and overestimates the heat dissipation capacity of surrounding rock. In the coal mining face with serious thermal damage, the heat dissipation of surrounding rock can be effectively reduced by appropriately slowing down the feed rate or adopting the cutter head of the coal miner with a shallower cut-off depth.