Research and application on optimization and improvement of wet shotcreting machine in Xinjing Mine
For a long time,the JPS type shotcrete machine has been used in the closed rock roadway of Xinjing Mine,The analysis shows that the sprayer has problems such as high labor intensity of workers,unsatisfactory spray effect,and certain safety hazards.which can not meet the production demand of the mine.Therefore,the boom of shotcrete machine is improved,and an intelligent control system is added to realize automatic identification of roadway contour and automatic shotcrete operation.The industrial test of the new ZSPB shotcrete machine was carried out in the material inclined roadway of Xinjing Mine.The application shows that compared with the JPS shotcrete machine,the top rebound rate of the new shotcrete machine is reduced by 31％,the thickness of the first shot is increased by 7.4％,and the strength reaches 24.8 MPa,which exceeds the standard of C20 concrete.The efficiency is increased by more than 20％,and the ideal application effect is achieved.
rock roadway excavationshotcreting machineoptimization and improvementrebound rate
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