three-arm drilling jumbo

This paper first briefly introduces the equipment composition and main functions of the three-arm drilling jumbo, and elaborates on the working mechanism and process key points of its core mechanisms. On this basis, it focuses on analyzing the main performance parameters of the core mechanism of the

In order to improve the quality of tunnel construction, especially the weak surrounding rock tunnel, and ensure its construction safety, the traditional excavation method is replaced by a fully computerized three-arm rock drilling rig, so as to speed up the tunnel construction progress and enhance

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

Based on the construction conditions and engineering characteristics of the Wujialiang super-long tunnel of Chengkai Expressway, this paper studies the mechanized excavation application of three-arm rock drilling rigs in high-risk long tunnels, and compares the cost of manual excavation

A fully-computerized drilling jumbo is used for drilling excavation in view of the characteristics of Luojiashan Tunnel in Lot 7 of Zhengzhou-Wanzhou High-speed Railway，for the purpose of meeting the requirements of“mechanization，industrialization，specialization and informatization”in tunnel