Reliability of dragline stripping and semi-continuous mining coal system under the thick overburden
CAI Qing-xiang
ZHOU Wei
PENG Hong-ge
CHEN Yan-long
CHEN Shu-zhao
Abstract：Aiming at the specialty of draglline stripping technology, the dragline system, the recovery coal reserves and semi-continuous mining coal system were taken as a system. Based on the demand of mining intensity and utilizing distribution of time to mean time to repair dragline, the calculation formula of the minimum recovery coal reserves was obained, the reliability model of the system was built, the five states were given and transfer with each other, and the transfer matrix and the availability. Through the study of Heidaigou Surface Mine, Zhungeer Energy Co. , Ltd. , Shenhua Group, the results show that recovery coal reserves is up to mean time to repair dragline and make sense to the stability of mining coal, and improving the maintainabilty of dragline is the important way to the reliabilty of the system.
Keywords：surface coal minedraglinesemi-continous systemreliabilityavailability
Publication Date：2009-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 1456-1459 )