Determination and Practice of Pseudo Tilt Mining Angle Based on FLAC3D Sharp Tilt Comprehensive Mining Face
ZHANG Tao
LIU Zhongyuan
LI Liang
CHEN Fei
Abstract：The steeply inclined and pseudo inclined mining has a good effect on reducing flying gangue injuries,slowing down coal wall fragmentation,and improving floor stability.The 31111 working face of Sichuan Coal Huarong Energy Taiping Coal Mine was took as an engineering example,and uses numerical simulation technology(FLAC3D)to simulate and analyze the overlying rock movement characteristics and coal wall stability of the working face under different inclined mining angles.Through comparative analysis,it has been determined that the optimal choice is a tilt angle of 5°to 8°,which can effectively control the coal wall and support without increasing the difficulty of mining.In practical applications,the high yield and high efficiency of mines have been achieved through the use of inclined and pseudo inclined layout and equipment adaptability design,providing reference and guidance for the safe and efficient mining equipment and mining process application in mines with similar complex geological conditions.
Keywords：steeply inclined comprehensive miningfalse oblique arrangementpseudo oblique angle
Publication Date：2025-06-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 75-82 )