As the mining depth increases, the problem of high-temperature thermal damage mainly caused by heat dissipation of surrounding rock is becoming more and more obvious. It is very important to solve the environmental problem of mine heat damage to improve the efficiency of mineral resource exploitation and protect the physical and mental health of workers. One can apply thermal insulation coating on the walls of mine roadways as a means of implementing active heat insulation. In this paper, expanded perlite (EP) and glazed hollow bead (GHB) are used as the main thermal insulation materials, ceramsite and sand as aggregate, plus glass fiber and sodium dodecyl sulfate to develop a new lightweight composite thermal insulation coating through orthogonal experiment method. According to the plate heat flow meter method and mechanical test method, the thermal insulation and mechanical properties of EP-GHB mixed ceramsite coating were studied by making specimens with different parameter ratios, and according to the analysis of the experimental results, the optimal mix ratio of the coating was selected. In addition, Fluent numerical simulation software was used to establish the roadway model, and the thermal insulation effect of the coating in the roadway under different working conditions was studied. The results show that the thermal conductivity of the prepared composite thermal insulation coating material is only 8.5% of that of ordinary cement mortar, and the optimal thickness of adding thermal insulation coating is 0.2 m, which can reduce the outlet air temperature of the roadway with a length of 1000 m by 4.87 K at this thickness. The thermal insulation coating developed in this study has the advantages of simple technology and strong practicability, and has certain popularization and application value in mine heat damage control.

随着开采深度的增加，以围岩散热为主的高温热损伤问题越来越明显。解决矿山热害环境问题对于提高矿产资源开采效率、保护职工身心健康具有重要意义。可以在矿井巷道壁上涂敷隔热涂料，作为主动隔热的一种手段。本文以膨胀珍珠岩（EP）和釉面空心珠（GHB）为主要保温材料，陶粒和砂为骨料，加上玻璃纤维和十二烷基硫酸钠，通过正交试验研制出一种新型轻质复合保温涂料。方法。根据板式热流计法和力学试验方法，通过制作不同参数配比的试件，研究EP-GHB混合陶粒涂层的保温性能和力学性能，并根据实验结果分析，得出最佳配合比选择了涂层。此外，利用Fluent数值模拟软件建立巷道模型，研究不同工况下巷道内涂层的隔热效果。结果表明,所制备的复合隔热涂层材料的导热系数仅为普通水泥砂浆的8.5%,添加隔热涂层的最佳厚度为0.2 m,可降低巷道出口空气温度在此厚度下，长度为 1000 m x 4.87 K。本研究开发的隔热涂料具有工艺简单、实用性强的优点，在矿井热害治理中具有一定的推广应用价值。