advance pre-reinforcement Mechanized supporting construction technology and key construction of railway tunnels Technical Research Taking the III. and IV. grade surrounding rock construction section of Loushan Tunnel in Xinbin County, Fushun City, Liaoning Province as an example, mechanized supporting construction is carried out on the tunnel construction section. The design of the construction technology and the development
rock drilling trolley Tunnel Excavation Technology of Lengthened and Elevated Double Drilling Trolley In view of the fact that the length of the hydraulic telescopic parallel boom of the traditional double-arm rock drilling rig can not meet the construction requirements of different excavation methods of large-section tunnels and is prone to the phenomenon of stuck drilling, and at the same time
three-arm drilling jumbo Optimization and Simulation Analysis on Boom Mechanism and Hydraulic System of a Three⁃arm Rock Drilling Jumbo The three⁃arm drilling jumbo is specialized equipment for hard rock tunnel construction using the drill⁃and⁃blast method. Its boom system is crucial for the extensive operational range of the end drill. Addressing the issues of easy vibration and large deformation in the boom system of the
parts search 3128087800 Brand : EPIROCPart No. : 3128087800Description : Hose FenderUse in : Boomer 104 , Boomer 281 , Boomer 281dh , Boomer 282 , Boomer 353 , Boomer K111 , Boomer K41 , Boomer K41x , Boomer L2c , Boomer M2c , Boomer S1d , Boomer S2
fully computerized three-arm drilling rig Application of fully computerized three-arm rock drilling rig in mechanized tunnel construction As a key mechanical equipment for mechanized tunnel construction, the fully computerized three-arm drilling rig has been widely used in tunnel construction. Based on this, taking the construction of a fully computerized three-arm drilling rig in a railway tunnel as an example, the functions of
Hydraulic rock drill Overview of domestic hydraulic rock drill products in 2023 This article collects the number of manufacturers and product models of domestic hydraulic rock drill products in 2023, and compares them with the overview in 2016. This article divides my country's hydraulic rock drill products into four types: airborne, outrigger, handheld and blast furnace
drill rod steel Analysis and Study on Crack Defect of Steel 42CrMoA Quenching for Percussive Rock Drill Rod Steel used for percussive rock drill rod has strict requirements for chemical composition nd heat treatment of raw materials due to its use in broken rocks. Based on the macroscopic analysis, chemical composition, macro, metallography and hardness test of 3 different kinds of defects and normal
single-arm rock drilling jumbo The Design of 1DM4 Single-arm Rock Drilling Jumbo Aiming at the problems of low technical level and poor reliability of domestic rock drilling jumbo, high cost and long supply cycle of purchasing foreign brands, Jinchuan Nickel Cobalt Research & Design Institute developed and designed 1DM4 single-arm rock drilling jumbo. Through CAN bus, the data
mountain tunnel Application of Rock Drilling Bogie in Mountain Tunnel Construction According to the actual situation of Yanzishan tunnel project, the specific application of rock drilling rig in its construction is analyzed in depth, including construction preparation and construction technology, and the advantages of rock drilling rig application are discussed, such as
parts search 4350276053 Brand : EPIROCPart No. : 4350276053Description : Spare Parts SetUse in : Roc D55 , Roc D65
underground mines Underground Mining Technology and its Trend Analysis continuous development of China's scientific and technological level, there has been a qualitative leap in underground mining technology. At present, in order to strengthen the mining efficiency of underground metal mines in China, it is necessary to strengthen research on underground mining
Hydraulic rock drill Fracture Failure Analysis of Shank Adapter for Hydraulic Rock Drill The shank adapter of hydraulic rock drill broke after drilling 4000 m. Failure analysis is conducted using fracture morphology observation, chemical composition, mechanical properties and microstructure analysis. The results show that the material of shank adapter has well wear resistance and