TY - JOUR N2 - The draw theory is the foundation for decreasing ore loss and dilution indices while extracting deposits from mines. Therefore, research on draw theory is of great significance to optimally guide the draw control and improve the economy efficiency of mines. The laboratory scaled physical draw experiments under inclined wall condition conducted showed that a new way was proposed to investigate the flow zone of granular materials. The flow zone was simply divided into two parts with respect to the demarcation point of the flow axis. Based on the stochastic medium draw theory, theoretical movement formulas were derived to define the gravity flow of fragmented rocks in these two parts. The ore body with 55° dip and 10 m width was taken as an example, the particle flow parameters were fitted, and the corresponding theoretical shape of the draw body was sketched based on the derived equation of draw-body shape. The comparison of experimental and theoretical shapes of the draw body confirmed that they coincided with each other; hence, the reliability of the derived equation of particle motion was validated. L1 - http://www.journals.pan.pl/Content/112907/PDF/Archiwum-64-3-05-Tao.pdf L2 - http://www.journals.pan.pl/Content/112907 PY - 2019 IS - No 3 EP - 546 DO - 10.24425/ams.2019.129367 KW - ore draw KW - sublevel caving KW - stochastic medium draw theory KW - inclined medium-thick ore body KW - draw body A1 - Zhang, Xiufeng A1 - Tao, Ganqiang A1 - Zhu, Zhonghua PB - Committee of Mining PAS VL - vol. 64 DA - 2019.09.24 T1 - A Gravity Flow Model of Fragmented Rocks in Longitudinal Sublevel Caving of Inclined Medium-Thick Ore Bodies SP - 533 UR - http://www.journals.pan.pl/dlibra/publication/edition/112907 T2 - Archives of Mining Sciences ER -