Research on deformation law of surface movement in high intensity mining based on multi information fusion

Xue Bo; Wang Meng; Zhang Xueliang; Gao Yunzeng

doi:10.19896/j.cnki.mtkj.2025.05.001

Abstract：Changping Mine is located in the loess hilly and gully area,with thick coal seams and high mining intensity on the working face.The mining activities have a significant impact on the surface.To study the surface movement and deformation laws in Changping mining area,the dynamic deformation laws of the surface were analyzed based on the measured data of the 6301 working face in Liupan area.The correspondence between surface movement parameters and geological mining conditions was studied using a multi information fusion method,and the influence mechanism of geological mining conditions on surface movement parameters was obtained.Research has shown that the starting distance of rock movement in the Changping heavy-duty fully-mechanized mining face is 75 m,the average lead-ing influence distance is 118 m,the leading influence angle is 77.5°,the maximum subsidence velocity is 42.44 mm/d,and the maxi-mum subsidence velocity lag angle is 75.1°;Obtained angular parameters of surface movement and deformation,including strike bound-ary angle,uphill boundary angle,strike direction movement angle,crack angle,loose layer movement angle,etc;Further analysis shows that the coefficient of subsidence due to insufficient mining is 0.71,the coefficient of subsidence due to sufficient mining is 0.87,and the coefficient of horizontal movement is 0.22,with a main impact radius of 190 m.The research results have certain practical value for surface damage control and governance,mine production safety guarantee,and ecological environment restoration in the Jincheng mining area.