Theoretical model and experimental research of airlift device in borehole hydraulic jet mining
Abstract：The advantage of airlift device is not brought into fullest play due to the poor lifting efficiency,thus it＇s application scope in BHM is limited.In order to make further improvement on lifting solid particles,the law of jet airlift influence on lifting characteristic was studied through improvement on the design of traditional airlift.A theoretical model was proposed to describe each phase movement in lifting pipe based on Bernoulli equation.The results were found as follows：the performance curves evolution of jet airlift is similar to that of traditional airlift,the experimental value has a little error to the theory value with a deviation of 7%.The effect of jet airlift on improving lifting capacity is greater than the traditional airlift,especially for the medium air flow rates.The maximum mass flow of solid particles of the former is two times of the latter under the conditions of γ=0.42 and QG=8.8 m3/h.
Keywords：airlift deviceBernoulli equationjet airlift
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 522-527 )