Litian Heavy Industry Machinery Co., Ltd.
Litian Heavy Industry Machinery Co., Ltd.
Drill Rod Factory Application

Qingdao Metro Line 2

Metro Rock Tools

Project: Qingdao Metro Line 2

Cooperation unit: China Railway 18th Bureau

Project Introduction: The total length of this project is 941 meters. The tunnel boring machine starts from Hai'an Road Station, passes through Haichuan Road Station, Haiyou Road Station, and Maidao Station, and finally dismantles and hangs out at Kaohsiung Road Station.

Because the geological conditions of the Qingdao subway are mainly slightly weathered granite strata, the rock has strong hardness and high quartz content. Therefore, it is specially designed and targeted to use TBM for construction. Qingdao Metro applied the TBM construction method for the first time.   

Products and Services Supply: 19" TBM disc cutter, on-site maintenance service

Application effect: The continuity of this section has achieved the highest daily footage of 22.5 meters and the highest monthly footage of 350 meters.

Litian TBM Disc Cutter Cutter For Boring Tunnelling Tool Project

Litian Updates
Dec 06-2021
Causes And Solutions Of Drill Rod Fracture
Drill rod is one of the important accessories of rock drill. It is a necessary tool in rock drilling. Drill rod must be able to bear significant torque, torsion, bending and vibration in the process o...
Nov 16-2021
Basic Requirements for Threaded Drill Rod
Threaded drill rod includes extension drill rod, light extension drill rod, drifter rod, MF rod, etc.1. Basic Requirements(1). Good elasticityIn the process of drilling, whether horizontal operation, ...
Important Parts And Working Principle Of Hydraulic Rock Drill