ShenTieJun

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

Based on the actual situation of the Dongshan Tunnel on the Shilou to Fenyang Expressway in Shanxi Province, the article proposes a specialty from the steel structure processing, tunnel advanced geological prediction, excavation, support, waterproofing and drainage, lining, maintenance and civilized