In order to adapt to dry and wet environment in mine roadways and improve the performance of sealing materials under different environmental conditions, this study selected the materials based on their ability to spray and found that the materials with a viscosity of 1500–6000 MPa·s can achieve a balance between performance of spray and wall-hanging performance. Next, by selecting high-elastic polyacrylate emulsion and ordinary Portland cement as the film-forming agent and gel, respectively, mix proportion factors of the nonreactive thin spray-on liner (TSL) were analyzed by using the Taguchi method. Moreover, fluidity, setting time, sealing properties, compressive strength, bending strength, and bonding strength of those materials were measured. It was disclosed that addition of an appropriate amount of polyacrylate emulsion can enhance the effects of fibers. By observing the morphologies of the materials’ bonding surfaces and comparing the factors influencing bonding strength between both dry and wet walls, it was uncovered that the adhesive property of cement-based sealing materials was mainly affected by the water-cement ratio. Eventually, bonding strength and sealing properties were selected as primary optimization indexes, while setting time, bending strength, and compressive strength were selected as secondary optimization indexes. The appropriate proportions of two types of TSLs for dry and wet walls were (W/C = 50%; P/C = 6%; F/C = 1%; T/C = 0.2%) and (W/C = 45%; P/C = 6%; F/C = 1%; T/C = 0.4%), respectively. A prepared TSL can be used for filling rock fractures in mine roadways. In addition, TSL exhibited a great performance for dry and wet walls under different environmental conditions. The present study may provide an insightful guidance and reference for the investigation of TSL sealing materials applied in the mine roadways.

中文翻译：

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矿井巷道薄层喷涂衬里聚合物改性材料的合成与性能

为了适应矿井巷道的干燥和潮湿环境，并提高密封材料在不同环境条件下的性能，本研究根据其喷涂能力选择了材料，发现粘度为1500–6000 MPa·s的材料。可以在喷雾性能和壁挂性能之间取得平衡。接着，通过分别选择高弹性聚丙烯酸酯乳液和普通波特兰水泥作为成膜剂和凝胶，使用Taguchi方法分析了非反应性薄喷涂衬里（TSL）的混合比例因子。此外，测量了这些材料的流动性，凝固时间，密封性能，抗压强度，弯曲强度和粘合强度。公开了添加适量的聚丙烯酸酯乳液可以增强纤维的效果。通过观察材料粘结表面的形貌并比较影响干墙和湿墙之间粘结强度的因素，我们发现水泥基密封材料的粘结性能主要受水灰比的影响。最终，将粘结强度和密封性能作为主要的优化指标，而将凝固时间，弯曲强度和抗压强度作为次要的优化指标。干墙和湿墙的两种TSL的适当比例分别是（W / C = 50％; P / C = 6％; F / C = 1％; T / C = 0.2％）和（W / C = 45 ％； P / C = 6％； F / C = 1％； T / C = 0.4％）。准备好的TSL可用于填充矿井巷道中的岩石裂缝。此外，TSL在不同环境条件下对干墙和湿墙都表现出出色的性能。本研究可为矿井巷道中TSL密封材料的研究提供有益的指导和参考。