In Hutubi, Shaanxi, Mr. Li and his son contracted the project of excavating a 6-meter-high * 5-meter-wide tunnel. Mr. Li changed the boom of his Hitachi 200 excavator to a straight arm and installed the YF-20RW drum cutter in Yichen environment for tunnel excavation. In the case of sandstone, sedimentary rock and silty rock inside the tunnel, the driving speed of the drum cutter is about 10m every day, and the milling efficiency is very high. With the help of Yichen drum cutter, the project was completed in 40 days, greatly shortening the construction period.
Yichen Rock Saw can Easily Cope with Tunnel Face Cutting
During tunneling, very hard rock face is sometimes encountered. Due to the extremely high hardness, the use of drum cutter can not meet the operation requirements. At this time, rock saw will be selected for cutting. The rock saw is made of synthetic diamond material, which is enough to deal with hard rock. The method and depth of sawing shall be explored according to the specific conditions of the rock and the construction scheme shall be determined.
Taking Xiamen tunnel project in Fujian Province as an example, China Railway encountered a granite tunnel face during excavation, so the construction party installed a Yichen YS-20SS on a 20 ton excavator for cutting operation, and knocked it with a crushing hammer after cutting, so as to realize the excavation of hard rock face.
——Tunnel Construction Has Artifact, Safe, Reliable and Efficient