INFLUENCE FACTORS ANALYSIS OF WEDGE SLOTTING BLASTING BASED ON ANALYTICAL HIERARCHY PROCESS

In order to choose the wedge slotting blasting parameters easily,index system of influence factors of the wedge slotting blasting was established based on fundamental principle of Analytical Hierarchy Process(AHP) and quantitative analyses of the influence factors was carried out by using AHP.The results showed that tilt angle of the perforation was main factor of affecting wedge slotting blasting and its weight value was 11.15%;elastic modulus,compressive strength,tensile strength,friction angle and cohesive force of rocks were relatively large,their weight values were 7.12%;bore-hole depth,density and explosion heat of the explosive were followed,whose weight values were 6.88%,6.75% and 6.75% respectively.All of which provided scientific theory for wedge slotting blasting parameters selection and blasting design.