高韧性聚合物水泥喷浆技术及巷道工程应用研究

针对传统水泥喷射混凝土技术存在施工环境不友好、施工劳动强度大、喷浆层易围岩脱空、开裂和垮塌等问题，研究了聚合物改性高韧性水泥喷浆材料和系统工艺技术，对聚合物添加量为0~50%的水泥喷浆材料力学性能及微观形貌进行探讨，制备得到韧性较好的聚合物改性水泥喷浆材料，并设计出配套的连续高效喷涂设备和工艺技术，并在某隧洞工程进行了应用试验。结果证明，该材料具有优异的围岩喷护效果，对围岩整体支护防护有较好的协同作用，且施工作业绿色、高效。

Research on high toughness polymer cement shotcrete technology and its application in tunnel

Aiming at the problems of traditional cement shotcrete technology, such as environmental pollution, high labor intensity, easy empty drum, cracking and collapsing of shotcrete layer from the rock surface, polymer-modified high toughness cement shotcrete material and process system are studied. The mechanical properties and micro morphology of cement shotcrete material with polymer content of 0-50% are studied, the polymer-modified cement shotcrete material with good toughness prepared, and continuous and efficient spraying systems are designed and applied in a tunnel construction engineering. The results show that the material has good protective effect on surrounding rock, and the construction process is green and efficient.