(i) The electric ramp is located 3 to 6 meters above the transport lane. The ore broke into the mine. The ease of slipping should not be less than the amount of ore in a train.
Advantages: Yankuang and transportation work do not interfere with each other, which can improve the mining capacity of the ore block. The section of the ore discharging well: generally 2 × 2 m 2 , this form is used more in China.
(ii) The ramp is located at the roof of the transport lane.
Characteristics: Yankuang and transportation interfere with each other, that is, the mine should wait for the mine car, or the mine car should wait for the mine. This reduces the efficiency of the mining.
Applicable conditions: used in individual cases, such as:
1 The amount of ore nuggets is not large, and the height of the bottom column must be lowered;
2 There is an electric ramp collapsed, and the electric ramp is reopened at the lower part;
(iii) The ramp is at the same level as the transport lane.
The ore that has been transported is transported to the next stage to transport the mine.
(as in the figure < B > above).
Advantages: 1 Lower the bottom column to the lowest height, reduce the amount of bottom column and increase the total recovery of the ore.
2 Improved the construction conditions of the eel and the operating conditions of the antimony ore.
3 The capacity of the chute is large, which removes the mutual influence of the hail and the transport.
Disadvantages: 1 When the size of the ore body is large, it will affect the mining preparation in the next stage;
2 In the next stage, the position of the ventilation shaft and the rocking patio of the nugget is difficult to select (because it is unsafe with the ramp).
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