METHOD AND SYSTEM FOR AUTOMATICALLY IDENTIFYING SURROUNDING ROCK LEVEL BY APPLYING WHILE-DRILLING PARAMETERS

摘要

Disclosed are a method and system for identifying a surrounding rock level by applying while-drilling parameters. The method comprises the following steps: pre-processing a data set of collected while-drilling parameters (S110); analyzing the pre-processed data set of the while-drilling parameters, determining a contribution rate of each variable in the while-drilling parameters by applying different data dimension reduction methods, carrying out a weighted average calculation on multiple calculated contribution rates by applying an ordered weighted average operator method, carrying out sorting and preferential selection according to the contribution rates obtained after calculation and combination, and determining the main characteristic variables of the while-drilling parameters, and on this basis, classifying sample sets of the main characteristic parameters (S120); and training the main characteristic parameters of different classifications by applying an established neural network and expert knowledge system, acquiring stable weight coefficients and threshold values, and carrying out surrounding rock identification verification on an established neural network mathematical model by applying sample data to same (S130). By means of the method, a machine automatic identification scheme that has a better working efficiency, is more convenient to use and has a higher precision can be realized.