rock drilling jumbo

China's gold mines are mainly concentrated in Shandong's Jiaodong Peninsula, and its underground gold mines are affected by seawater corrosion, causing frequent failures and reduced service life of rock drilling jumbo, which significantly affects construction efficiency and production costs. As a

A large number and long mile age of railway tunnels are being constructed in China. Thedrilling and blasting technology has be come the most commonly used method in the tunnel construction process due to its unique advantages. The blasting is not only the first stage of tunnel excavation,but also

This article introduces that in order to improve production efficiency, the production unit lengthened the propulsion beam of the BOOMER281 excavation jumbo and replaced the original BMH2337 propulsion beam of the excavation jumbo with the BMH2343 extended propulsion beam. Whether the strength

In order to apply mechanized drilling and blasting method for large-section tunnel construction in weak surrounding rocks， construction technologies of rock drilling and arch installation were studied based on Laifu tunnel of Chongqing-Kunming high speed railway. Through the renovation of the

Rock drilling jumbo refers to the installation of one or several rock drilling machines on a special drilling arm. The chassis is a modern engineering machinery developed from a hand-held and towed chassis. It has fast drilling speed, good guidance, and strong operability. features. High operating

The performances of Rocket Boomer353 rock drilling jumbo and AMV21SGBC-CC full computer rock drilling jumbo are compared. Through the actual construction process, the applicability of the two kinds of rock drilling jumbo is analyzed.

In order to effectively reduce the construction cost and the overbreak amount by drilling and blasting method,and improve the drilling and blasting construction technology, the operation mode of the rock-drilling jumbo is studied, and it is concluded that when the rock-drilling jumbo

With the rapid development of Chinas high-speed railway construction，the construction standards continue to increase． In order to ensure the rapid excavation of long and large tunnels，to ensure the safety of operators，to reduce the number of operators，and to reduce labor intensity，

The rock of Wuji iron mine belongs to very hard rock.Drilling and blasting are difficult in the process of roadway excavation.In order to improve rock drilling technology and production efficiency,full hydraulic rock drilling jumbo is introduced.At the same time,the parameters of rock drilling

This paper gives the definition of the rock drilling jumbo for tunnel and describes China's manufacturers of rock drilling jumbos for tunnel and models of their products. The rock drilling jumbos are divided into 2 classes herein: jumbos with the usage report and jumbos without the usage report.

In order to improve the control precision of overbreak and underbreak of tunnel when using rock-drilling jumbo，the top plate structure on propulsion beam of a kind of three-boom rock drilling jumbo is analyzed． The fault，overlarge distance between guide hole of drilling pipe of top plate

In recent years,more and more high speed railway tunnels have been built in China. However,these high speed railway tunnels are basically constructed by drill and blast method assisted by hand held pneumatic drills and multi purpose operation platforms.Such equipment allocation mode has the