Abstract: Resources/reserves risk is one primary impact factor of mining industry investment risk,therefore,improving the accuracy of reserves estimation is a powerful means to reduce the investment risk.On repect of enhancing credible / reliable precision of mineral resources/reserves estimation,Kriging had been used and recognized widely by advanced mines both at home and abroad.Based on the Kringing variance's computation theory equation,the impact factors of Kriging estimation were analyzed,a set of process and method of Kringing variance influence facotrs weighing evaluation was proposed.Took a gold mine as a example,Kriging variance influence evaluation model and judgment matrix were constructed by adopt analytical hierarchy process,and calculation was done by using MATLAB method,each weight of influence factors was obtained.Reserves estimation practice of many mines proved,through the optimized regulation of key influence factors,resources/reserves estimation precision could increased essentially.

Key words: Mining software, Resources/reserves estimation, Kringing variance, Influence factors analysis, AHP