The row of excavator battle groups in Inner Mongolia's open-pit coal mines always impressed us—big swinging, roaring, and roaring. After a year, the author again came to Inner Mongolia, a large open-pit coal mine, not onl…
At the beginning of 2018, major car companies released a new car in accordance with the established plan and launched a fierce competition. In the previous issue, Economic Daily - China Economic Net introduced 4 self-owned brand cars and SUVs for you. This issu…
First, the status and role of coal mine screeners
1. The position coal mine security inspector is directly led by the first responsible person at all levels of safety and is the law enforcer of the security inspection agency. The inspectors…
1, button function
The methane detection alarm button functions are as f…
Device composition
The device is controlled by ZP 1 2 7-Z mine automatic sprinkler dust collector, GQQ0.1 smoke sensor, GWD100 temperature sensor, GCJ0.2 touch sensor, DFH20/7 mine intrinsically…
(1) Coal mine water damage
Any flood that affects production, threatens mining face or mine safety, increases the cost per ton of coal, and partially or completely inundates …
Due to the harsh natural environment and geological conditions, the underground electrical equipment is frequently started, the load changes greatly, the voltage fluctuation is large, the equipment is burnt due to …