From the point of development quantities of mining equipment, some companies manufacturing mining machine just blindly seek for their own economic benefits, they forget to take scientific and reasonable management to their products which lead to the fact that their products occur this or that kind of problems, thus seriously influencing its service life.
Now a lot of electrical equipment in the mining site is old and miscellaneous, while still running with problems, the safety facilities and protection devices are not complete. As we all know, now they usually set electrical and mechanical management department and bear the two functions: one is mechanical and electrical management, and the other is mechanical and electrical production. However the personnel's main energy is put into coping with production, the management role can't be given to full play. Meanwhile, some local coal mines significantly streamline the personnel, thus causing insufficient personnel management, professional organization fails to sound, management network often interrupts, and their management function dilutes.
The technical force is weak and the real-time monitoring is not conducted. There are many unsafe factors in the mining production process, some higher technical level staff would not enter into the coal mining enterprises.
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