Veenstra, RL, Rosewall, A & Rose, H 2023, 'Throttling a cemented paste backfill underground distribution system', in GW Wilson, NA Beier, DC Sego, AB Fourie & D Reid (eds), Paste 2023: Proceedings of the 25th International Conference on Paste, Thickened and Filtered Tailings, University of Alberta, Edmonton, and Australian Centre for Geomechanics, Perth, pp. 726-742, https://doi.org/10.36487/ACG_repo/2355_57
(https://papers.acg.uwa.edu.au/p/2355_57_Veenstra/)
Abstract: Throttling the flow in a pipeline increases the upstream pressure, allowing for the pressure profile of the pipeline to be “raised” over a problematic area of the reticulation network, such as an area where freefall occurs.  
This paper will outline the design and implementation of such a throttling system for a cemented paste backfill reticulation system, including a design discussion on how chokes are used to throttle the flow and the calculation of the theoretical pressure drop. The implementation section provides insights into how an underground choke station was installed and the commissioning process. Furthermore, this section discusses the sustainability of the choke station, including how it should operate, and how the station will be utilised in the future.  

Keywords: laminar flow, choke, underground, backfill, reticulation, delivery, hydraulics