The use of waste rock as an aggregate in mining backfill is environmentally friendly and cost-saving. slurry flow property varies with the change aggregate, binder content, solid concentration, additives. a pipeline governed by its properties, which makes it crucial to study properties their effects. One example fly ash-waste mixed Jinchuan Nickel, China. Tests on slump, slump flow, mortar cons...

Pile groups are important hydraulic structures and scouring around them is not only affected by the flow characteristics but also number arrangement of piles in a group. This research experimentally investigates temporal pile subjected to single peak hydrographs clear-water conditions. Results show that depths rear downstream lead could be decreased during up 24% diameter, final scour depth dif...

Owing to the shortcomings of blindness and inaccuracy when backfilling in goafs based on key stratum theory, we propose “multi-arch pier-column” method. This method involves drilling holes at specific locations surface inject filling slurry materials into goaf separation area under stratum. allows broken gangue be cemented form a stone body, improve its overall strength. process, along with str...