To realize the triple functions of “roadway support, thermal insulation and heat regulation” of pumping wet shotcrete (PWS), the microencapsulated phase change material (MPCM) with poly (lauryl methacrylate) as shell and paraffin wax as core was synthetized by interfacial polymerization. The surface morphology, particle size distributions, core-shell compositions, the performances of the thermal stability and phase change of the MPCM were analyzed. The results show that the synthetized MPCM has excellent performances and can be applied in PWS. To obtain the optimal mixed proportions of the key materials (i.e., ceramsite, sand and MPCM) in PWS, the key performance indices were employed in the orthogonal experimental design to test the multiple performances of the PWS containing MPCMs. The results show that these performances are influenced by the dosages of the key materials and the recommended dosages were: 112.5 kg/m³ of ceramsite, 1250 kg/m³ of sand and 100 kg/m³ of MPCM. This study shows that the application of the MPCMs cannot only further reduce the thermal conductivity of PWS but also endow PWS with the function of heat regulation. A broad prospect of the application of MPCMs in underground cooling engineering can be expected.

为实现泵送湿喷混凝土（PWS）的“巷道支护、保温、调温”三重功能，采用界面聚合法合成了以聚甲基丙烯酸月桂酯为壳、石蜡为芯的微胶囊相变材料（MPCM）。 . 分析了MPCM的表面形貌、粒径分布、核壳组成、热稳定性和相变性能。结果表明，合成的MPCM具有优异的性能，可应用于PWS。为了获得PWS中关键材料（即陶粒、砂和MPCM）的最佳混合比例，在正交实验设计中采用关键性能指标来测试含有MPCM的PWS的多种性能。³陶粒、1250 kg/m ³沙子和100 kg/m ³ MPCM。该研究表明，MPCMs的应用不仅可以进一步降低PWS的热导率，还可以赋予PWS热调节功能。MPCM在地下冷却工程中的应用前景可期。