However, wet shotcrete construction in which dust would not be made, combining with manipulator, could not only save manpower, but also increase throughput, accordingly improved construction speed.

• 湿式喷凝土施工时无粉尘弥漫的状况，加上配合机械臂，不但节省人力，而且吐出量大，大幅改善喷凝土施工速率。