drilling rig

This paper introduces the general situation of a single-hole double-track high-speed railway tunnel project, and combines the actual construction of its large-section soft surrounding rock tunnel project. The application technology of construction, optimization of construction operation plan

The paper covers developmental conditions of hydraulic wheeled drilling rigs home and broad, their distribution as well as status of domestic and foreign manufactures. It focus on demands from users, discusses the pros and corns of the currently and predicts the developmental trends

In the process of mountain tunnel construction, drilling and blasting method is a commonly used tunneling technology. With the increasing demand of tunnel construction, the country pays more and more attention to the construction safety. Drilling bench has gradually become the necessary

The dwelled on the definition of the drilling rig and classification of the DTH drilling rigs.It also introduced some domestic DTH drilling rig makers as well as major models and specifications of their product,and pointed out developmental directions and other 5 leading technologies of the DTH