Tunnel second lining vault with mold grouting machine is widely used in the construction technology of arch with mold grouting

According to no. 199 document of bridge and tunnel letter of China Railway Engineering Group, it is required to grouting the tunnel lining vault in time.In order to improve the integrity and compactness of tunnel vault lining quality, strengthen the monitoring and management of the grouting of tunnel vault lining concrete, master the situation of… Read more Tunnel second lining vault with mold grouting machine is widely used in the construction technology of arch with mold grouting