TY - JOUR N2 - In the process of coal extraction, a fractured zone is developed in the overburden above the goaf. If the fractured zone is connected with an aquifer, then water inrush may occur. Hence, research and analysis of the height of overburden fractured zone (HOFZ) are of considerable significance. This study focuses on the HOFZ determination in deep coal mining. First, general deformation failure characteristics of overburden were discussed. Second, a new method, numerical simulation by orthogonal design(NSOD), have been proposed to determinate the HOFZ in deep coal mining. Third, the validity of NSOD is verified in the practical application, compared with empiric al formula in Chinese Regulations and in-situ test. These three methods were applied to determine the HOFZ of working face No. 111303 in No. 5 coal mine. The pre dicted HOFZ of NSOD is found to be similar to the result of the in-situ test (8.9% relative error), whereas the HOFZ calculated by the empirical formula has extremely large error (25.7% relative error). Results show that the NSOD can reliably predict the HOFZ in deep coal mining and reduce time and expenses required for in-situ test. L1 - http://journals.pan.pl/Content/107895/PDF/Archiwum-63-3-06-Cheng.pdf L2 - http://journals.pan.pl/Content/107895 PY - 2018 IS - No 3 EP - 631 DO - 10.24425/123687 KW - the height of overburden fractured zone KW - numerical simulation KW - orthogonal design KW - in-situ test A1 - Han Yangchun A1 - Cheng Jiulong A1 - Huang Qisong A1 - Zou D.H. Steve A1 - Zhou Jin A1 - Huang Shaohua A1 - Long Yun PB - Committee of Mining PAS VL - vol. 63 DA - 2018.10.01 T1 - Prediction of the Height of Overburden Fractured Zone in Deep Coal Mining: Case Study SP - 617 UR - http://journals.pan.pl/dlibra/publication/edition/107895 T2 - Archives of Mining Sciences ER -