Rigger Implementation to Enhance Mucking Productivity of Continuous Loader at Rishikesh Karanprayag Railway Tunnel Project Pkg-02, Byasi Uttarakhand India- An Innovative Approach


Authors : Prabhu Kumar; Shankar Kumar; Jayesh Jadhav; Jishan Alam; Suraj Deshmukh

Volume/Issue : Volume 7 - 2022, Issue 3 - March

Google Scholar : https://bit.ly/3IIfn9N

Scribd : https://bit.ly/3JTQEk2

DOI : https://doi.org/10.5281/zenodo.6395877

A Continuous loader called Haggloader 7HR is deployed in Rishikesh Karanprayag Railway Tunnel Project Pkg-02 for safe and optimal loading of muck from the blast face. To counter growing operational cost and inefficiency of tunnelling construction, continuous loader seems to be a game changer for muck loading for smaller diameter tunnels. Muck loading is a cyclic process where an average quantity of 60 to 90 m3 of muck is being generated after every blast operation. Due to the rotation constraints of normal excavator in smaller diameter tunnels, continuous loaders seem to be the best option available. This paper describes the background of project execution with detailed roadmap and excavation process employed for space development. the major issue arises while deploying continuous loader is the approachable height of loading, on the ground facts describes the issue where haulage approach is out of reach. Haggloader reaches on 1/3rd of the total height of haul from the base. Approachable loading height is always an issue when it comes to loading. It was also observed in case of Continuous loader conveyor that the total approachable height of conveyor from the base of haulage was around 1 feet. Due to which loading capacity was deeply affected. To counter the same Riggers has been implemented at the rear end which lifts the Continuous loader 1 feet from the ground, in turn lifts conveyor 3 feet from the base of the Haul is the state of an art. A complete set of data on monthly basis before and after implementation has been recorded to map the muck loading capacity of Continuous loader. On the basis of regression analysis total improvised efficiency of Continuous loader after Rigger implementation with excellent correlation factor R2= 0.9987 and R 2=0.7133 before implementation was recorded. Production per unit time has also been described in this paper. The improvisation with recorded data has the potential to rapidly improve loading capacity of continuous loader.

Keywords : Continuous loader, Rigger, Excavation, NATM, continuous loading, Parametric Analysis.

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