Abstract
The high-precision 3D simulation model for geomechanics of a complex coal seam is the necessary premise for the research on intelligent shearer and unmanned mining. However, at present, a simulation model for geomechanics of a complex coal seam generally has the problems of simplifying complex geological structures and low accuracy for structures. In order to meet the needs of a coal seam simulation model in the mining process of an intelligent shearer, it is necessary to optimize the simplified model of a coal seam. Therefore, based on a 3D simplified simulation model constructed with discrete element technology, the complex coal seam application plug-in was compiled with the help of an Application Program Interface. Moreover, according to the geological characteristics, new attributes were added to the structures to complete the construction of the model of a complex coal seam. Finally, the model was verified with laboratory experiments. The results showed that the high-precision 3D simulation model for geomechanics of a complex coal seam effectively improved the accuracy of the modeling. The real-time transmission and the real-time sharing of multi-source data were realized by considering the 3D simulation model for geomechanics of a complex coal seam as the core. Additionally, the purpose of the real-time sensing of the coal cutting state was achieved in order to lay the foundation for the realization of unmanned mining.
Highlights
The high-precision 3D simulation model for geomechanics of a complex coal seam is the necessary premise for the research on intelligent shearer and unmanned mining
With the development of computer technology and the concept of digital mines and intelligent mines, more and more attention has been paid to the modeling method of the approximate representation of the objective entity of complex coal seam based on virtual prototype technology[5,6]
Based on the actual geological conditions of a mining area and the physical and mechanical characteristics of coal and rock, the establishment of the 3D simulation model for geomechanics of a coal mining face is the basis of the accurate identification and control of the cutting state of an intelligent shearer
Summary
Where Edl is the local damping energy, α is the local damping coefficient, duislip is the displacement increment of sainsignlgelpeapratrictilcel,eE, dvMisi is the unbalanced bending moment of a single particle, dθislip is the incremental corner of a the viscous damping energy, cr is the viscous damping coefficient, ui is the average velocity opfartthieclpesa,rdtiθci′lselipsi,sdtxhi′selipinisctrheme iennctroemf tehnetpoafrtpiacrleticcolenctaocnttcaocrtndeirs,pElaf cisemtheenfrt,icωtiioins tehneeargvey,raFgsteisatnhgeualvaerrvaegleoctaitnygoenf ttihael force in an incremental ′. The establishment of the mathematical model for the monitored data was of great significance to optimizing the 3D simulation model for geomechanics of the complex coal seam
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