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Deformation Prediction for Surrounding Rock of a Deep Roadway Based on a Non-Equidistant GM(1,1) Model Group
(1 State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining & Technology, Xuzhou 221116; 2 School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116; 3 Helongjiang Longmay Mining Holding Group Co. Ltd., Zhenxing Coal Mine, Huogang 154100)
Abstract In order to overcome surrounding rock deformation problems for a deep roadway with different intervals, a full data non-equidistant GM(1,1) model and a partial data non-equidistant different-dimension GM(1,1) model are established, a 5-dimensional partial data non-equidistant GM(1,1) model with smallest relative error is obtained after error analysis, and displacements of the roadway roof and floor, as well as two sides, are predicted. The result shows the smaller the dimension, the smaller the average relative error of the non-equidistant GM(1,1) model within a certain range, making it a good method for predicting surrounding rock deformation of a roadway.
Abstract：
In order to overcome surrounding rock deformation problems for a deep roadway with different intervals, a full data non-equidistant GM(1,1) model and a partial data non-equidistant different-dimension GM(1,1) model are established, a 5-dimensional partial data non-equidistant GM(1,1) model with smallest relative error is obtained after error analysis, and displacements of the roadway roof and floor, as well as two sides, are predicted. The result shows the smaller the dimension, the smaller the average relative error of the non-equidistant GM(1,1) model within a certain range, making it a good method for predicting surrounding rock deformation of a roadway.
.Deformation Prediction for Surrounding Rock of a Deep Roadway Based on a Non-Equidistant GM(1,1) Model Group[J] MODERN TUNNELLING TECHNOLOGY, 2018,V55(2): 91-95
2018, Vol. 55 