无碱湿喷技术是当代最先进的喷射混凝土技术，大瑞铁路大柱山隧道初支喷射混凝土采用了无碱湿喷技术，取得了较好的效果。%Alkali-free wet spraying technology is the most advanced technology of sprayed concrete. This technology was used in the Darui railway Dazhushan tunnel early support sprayed concrete and it had achieved good results.
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