DuYu

As an important piece of machinery for mechanized tunnel construction, the three-arm rock drilling jumbo has been widely used in tunnel projects. As a key piece of equipment for mechanized tunnel construction, the three-arm rock drilling jumbo has gained broad application due to its efficiency

In order to ensure the quality and safety of highway mountain tunnel construction and to solve the problem of limited construction schedule of long tunnels，it is proposed to use mechanized construction combined with smooth blasting method to achieve safe and reliable tunnel construction. In view