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2021
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09
Drilling tools for rock drilling
There are two kinds of construction methods of rock drilling and blasting excavation method and mechanical rock breaking excavation method. Domestic construction is mainly based on rock drilling, drilling and blasting excavation method, and its operation area is concentrated in tunnels and culverts in infrastructure engineering construction and well excavation in underground mine production and construction.
There are two kinds of construction methods of rock drilling and blasting excavation method and mechanical rock breaking excavation method. Domestic construction is mainly based on rock drilling, drilling and blasting excavation method, and its operation area is concentrated in tunnels and culverts in infrastructure engineering construction and well excavation in underground mine production and construction.
The development direction of rock drilling and tunneling in tunnels and shafts is to use hydraulic rock drilling rigs to mechanize tunneling and full-section tunneling machines, as well as mechanized construction operations such as patio drilling rigs. China attaches great importance to the research of hydraulic rock drilling rig, especially the full hydraulic rock drilling and tunneling rig. In the 1980 s, nearly 10 types of hydraulic rock drilling and drilling rig samples were developed and imitated, of which the full hydraulic rock drilling and tunneling rig is the main one. However, due to various reasons, these sample vehicles have not been successfully used in actual production. Air-leg light rock drills are still the main construction machinery in rock drilling and tunneling projects.
Since the mid-1990s, domestic rock drilling machinery manufacturing enterprises and scientific research institutions have resumed the development of tunnel drilling and boring rigs on the basis of summing up experience. Foreign rock drilling machinery manufacturing enterprises in China have also begun mass production of full hydraulic rock drilling and boring rigs. By the beginning of the 21st century, the number of imported and domestic full hydraulic rock drilling and tunneling rigs used by large domestic construction enterprises and mines has been increasing, and some have become the main equipment in tunnel and shaft construction. From the development process of tunnel and roadway drilling equipment in industrialized countries, it can be seen that the application of full hydraulic rock drilling and tunneling drilling vehicle is the embodiment of the construction modernization level, and it should also be a kind of rock drilling machine with greater development space in tunnel and roadway construction in China in the future.
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