Research on prediction of surface deformation during the mining of No.4 coal seam in Fujiayan Coal Mine
Qiao Jianwei
Abstract：The surface deformation caused by coal mining can cause serious damage to ground infrastructure.Taking the No.4 thin seam mining of Fujiayan Coal Mine as the research object,a fusion interferometric synthetic aperture radar(InSAR)technology was pro-posed,and using FLAC3D numerical simulation and probability integration comprehensive method to predict the surface deformation caused by thin coal seam mining.The results show that when using InSAR historical deformation data to invert rock mechanics parame-ters in numerical simulations,the simulated estimated surface deformation is basically consistent with InSAR data and probability inte-gration model results,verifying the reliability of the simulation results.Using this method,it is estimated that the No.4 coal seam of Fu-jiayan Coal Mine will experience a settlement deformation of 0.68 m during mining.Comprehensive prediction method effectively im-proves the accuracy of surface deformation prediction under mining action.Research results can provide reference for predicting surface subsidence during coal seam mining under similar geological and mining conditions.
Keywords：thin seamFLAC3Dprobability integration methodsurface deformation
Publication Date：2025-10-30
Online Publishing Date：2025-11-27(First online date of this platform, not the publication date of the document)
Pages：6( 102-107 )