Application of Self-drilling hollow bar system in Tunnel Engineering

Sydney Metro Northwest is a current project by the Government of New South Wales for a rapid transit link to the north-western suburbs of Sydney, Australia. It is being managed by Transport for New South Wales and is proposed to connect Rouse Hill to Chatswood via Castle Hill and Epping.

The PPP will integrate the Sydney Metro City and Southwest project with the newly-opened Metro North West line to deliver a seamless turn-up and go service along a dedicated 66-kilometre line with 31 stations from Tallawong to Bankstown.

The expanded project includes the integration of the existing Metro North West, the metro rail conversion of the Sydenham to Bankstown suburban line and more than 15 government contracted packages – all coming together in a single end to end metro system to be operated by NRT.

Self-drilling hollow bar system is an ideal anchor system for underground construction and environmental solution for metro tunneling projects. It’s usually used for pre-support in the construction. Self-drilling hollow bar system is safe, reliable and efficient owing to its unique feature of integrating drilling, grouting and anchoring in one operation.


Application of self-drilling anchor bar in subway

It is understood that Sydney’s metro railway  runs through two purpose designed and built tunnels.

As of November 21, More than 11 million customer journeys have been made on the Metro North West Line, with Sydney’s new driverless trains travelling over 1.7 million kilometres – or 42 times around the equator.

In its first five months of operations, the new metro has ramped up to meet key milestones and is now carrying more than 75,000 people each weekday.

Self drilling anchor bar  used in tunneling can improve the stability and load bearing characteristics of rock mass. Under the circumstance of weak and broken rocks, self drilling anchor bar technology is an ideal anchoring system for supporting to prevent tunnel collapse, rock deformation, and ensure construction quality and the safety of workers. Sinorock self drilling anchor bar has been widely used in numerous metro railway projects. Due to the reliable products and strict quality control, Sinorock  has won a general recognition of our tunneling industry clients.


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