中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 24 No. 11 November 2014 |
（1. National Administration of Surveying, Mapping and Geoinformation (NASG) Key Laboratory for
Land Environment and Disaster Monitoring, China University of Mining and Technology, Xuzhou 221116, China;
2. School of Environment Science and Spatial Informatics, China University of Mining and Technology,
Xuzhou 221116, China
3. School of Mining Engineering, University of the Witwatersrand, Johannesburg 2000, South Africa）
Abstract:A new short-term warning and integrity monitoring algorithm was proposed for coal mine shaft safety. The Kalman filter (KF) model was used to extract real global positioning system (GPS) kinematic deformation information. The short-term warning model was built by using the two-side cumulative sum (CUSUM) test, which further improves the warning system reliability. Availability (the minimum warning deformation, MWD), false alarm rate (the average run length, ARL), missed rate (the warning delay, WD) and the relationships among them were analyzed and the method choosing warning parameters is given. A test of a deformation simulation platform shows that the warning algorithm can be effectively used for steep deformation warning. A field experiment of the Malan mine shaft in Shanxi coal area illustrates that the proposed algorithm can detect small dynamic changes and the corresponding occurring time. At given warning thresholds (MWD is 15 mm and ARL is 1000)，the detected deformations of two consecutive days’ deformation sequences with the algorithm occur at the 705th epoch (705 s) and the 517th epoch (517 s), respectively.
Key words: coal mine shaft; deformation; cumulative sum; short-term warning; Kalman filter; integrity monitoring
