The Xiamen West Passage Subsea Tunnel in Fujian uses two UJ33 boring trolleys for two-way operation. The construction progress has been completed on time with quality and quantity. At present, the UJ33 has accumulated more than 5,000 meters of excavation.
*Engineering dobby jumbo: UJ33
Application areas: Full-section excavation and excavation, taking into account supporting auxiliary work such as bolts, prying hair, charging, and hanging nets. Tunnels: construction of highways, railways, hydropower and other tunnels. Caverns: hydropower station caverns, diversion tunnels, air-raid shelters, national defense caverns, petroleum and chemical storage caverns. UJ33 drilling rig: minimum passability of 3.4*3.4m, tunneling range 16*13m (width * height), vertical anchor range 23x17m (width * height).
*The standard propelling beam has a total length of 7350mm and an effective hole depth of 5.27m.
Optional: ①Propelling beam with a total length of 8130, with an effective hole depth of 5.88m;
②Bolder replacement mechanism system;
③Blow hole device.