Abstract: The paper presents the characteristics and mechanism of wet shotcrete, the effect of the characteristics and amount of the wet shotcrete components such as cement, aggregate, silica powder, accelerator and water reducer on the pumpability and mechanical properties of wet shotcrete, and the additive application state and perspective at home and abroad.It also analyzes the respective advantages, application scope and technical process of a wet shotcreting unit and a wet shotcreting vehicle with robot and walking system, and describes the optimal proportioning of the wet shotcrete and wet shotcreting process used at Jinfeng Gold Mine, which is compared with dry shotcrete in terms of technology and economy.Wet shotcrete|Characteristics and

Key words: mechanism, Production process, Engineering case