Roadway surrounding rock deformation predicting method based on neural network

Abstract

The invention provides a roadway surrounding rock deformation predicting method based on a neural network and belongs to the method for predicting roadway surrounding rock deformation. Key influence factors of surrounding rock are obtained by means of layer analysis, site detection data under different geological conditions are collected and arranged, reliable data arrays obtained through monitoring serve as a training sample of the roadway surrounding rock deformation, the data of the training sample train the network system through trainlm functions, and a BP neural network model can be set up; the trained neural network is utilized for predicting the deformation amount at the initial excavation stage of a roadway, deflection of a surrounding rock top plate, moving-up amount of a bottom plate, displacement of roadway walls and generated maximum plastic zone damage depth are obtained according to input index parameters, the neural network predicts the roadway deformation of the initial excavation stage according to the prediction request, proper support parameters are selected for controlling support of the roadway, and safety accidents caused by instability of the rock are prevented. The reliable prediction data are provided for the roadway exploration and excavation processes to instruct the construction process of the roadway, and working procedures are arranged reasonably.

Description

technical field [0001] The invention relates to a method for predicting the deformation of the surrounding rock of the roadway, in particular to a method for predicting the deformation of the surrounding rock of the roadway by using a neural network. technical background [0002] With the rapid development of our country's social economy, the development and utilization of underground resources have become more and more extensive. For underground mining projects, in order to ensure the safe production of the mine, the first problem to be solved is how to maintain the stability of the surrounding rock of the roadway after excavation and unloading, and the research on the stability of the surrounding rock of the underground roadway caused by this It has also received increasing attention and attention from people. More and more studies have found that the instability and failure of the surrounding rock of the roadway is often caused by the stress overload or excessive displac...

AI Technical Summary

Problems solved by technology

[0003] Technical problem: The purpose of this invention is to propose a method for predicting the deformation of the surrounding rock of the roadway using a neural network to solve the problem of predicting the subsidence of the roof of the surrounding rock of the roadway, the displacement of the bottom plate, the displacement of the side of the roadway and the damage depth of the maximum plastic zone. question

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