31 double shield TBM construction of Thailand Water Diversion Project
Recently, Sany independent research and development and production of double shield TBM in Thailand MaeNgat-MaeKuang Chiang Mai water diversion project site held a successful driving ceremony, Thailand Royal Irrigation Department responsible person to attend the ceremony.
It is understood that 31 double shield TBM is responsible for the excavation of the tunnel is 10.5 kilometers long, located in a section of MaeNgat-MaeKuang diversion tunnel phase I project. The local geology is mainly shale and thick sandstone, in which the highest quartz content of the strata reached 87%. At the same time, the tunnel construction also passes through a number of "weathering, fragmentation and fracture" of the rock zone, complex construction environment, the reliability of the equipment put forward high requirements.
In order to ensure the smooth construction of the project, in the early product design, Sany products a series of customized improvements for rock hard, quartz content is high, the larger the cutter tool wear, 31 creatively in the diameter of knife disc 4.95M are arranged on 26 to 19 inches to hob. A substantial increase in wear resistance strength of cutter head, adapt to the local conditions of engineering.
Not only that, 31 also deeply optimized the double shield shield structure, and advanced detection as the standard configuration, to improve its risk prediction ability. In addition, in order to improve the progress, the shield machine has been running in the double shield mode, in order to ensure the tunneling while the segment assembly. A series of effective means to ensure that 31 double shield TBM in the project construction of color performance.
It is understood that the shield machine construction market in Thailand has been occupied by Japan and European brands. The 31 shield machine successfully entered the Thailand market, breaking the Chinese shield by boat overseas marketing mode, rely on customized products and services, to gain a competitive advantage in overseas.
