(1) Power supply 1. For each mine construction, there should be a two-circuit power supply line to ensure that the power supply load of the mine may be carried out when any primary circuit fails. It is strictly forbidden to install a load doser on the mine power line.
2. The power supply route of the underground central substation, the main drainage pump house and the drainage pumping station of the mining area under the mining shall not be less than two circuits. The main equipment such as the main ventilator, the vertical shaft winch for lifting personnel, and the gas pump for pumping should have two power supply lines directly fed by the substation.
3. The cable laid downhole must be hung. Inclination angle 30. Hooks for the following roadways, the spacing is not more than 3m; 30. The above roadway shall be clipped, clamped, etc., and the spacing shall not exceed 6m; the cable shall not be hung on the air duct or water pipe, if it is arranged on the same side of the roadway, it shall be arranged above it. Cables in horizontal or inclined roadways should be properly slack and fall freely under accidental gravity.
(II) Selection of electrical equipment for underground mine construction The selection requirements for electrical equipment for underground mine construction are shown in Table lG420105.
2. The power supply route of the underground central substation, the main drainage pump house and the drainage pumping station of the mining area under the mining shall not be less than two circuits. The main equipment such as the main ventilator, the vertical shaft winch for lifting personnel, and the gas pump for pumping should have two power supply lines directly fed by the substation.
3. The cable laid downhole must be hung. Inclination angle 30. Hooks for the following roadways, the spacing is not more than 3m; 30. The above roadway shall be clipped, clamped, etc., and the spacing shall not exceed 6m; the cable shall not be hung on the air duct or water pipe, if it is arranged on the same side of the roadway, it shall be arranged above it. Cables in horizontal or inclined roadways should be properly slack and fall freely under accidental gravity.
(II) Selection of electrical equipment for underground mine construction The selection requirements for electrical equipment for underground mine construction are shown in Table lG420105.
I:Summany
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