1 The comprehensive method of retained ore should be used for ore bodies that do not bond ore, are not self-igniting, and have a thickness of less than 8 m and an inclination of 30° to 50° ;
2 When the inclination angle of the ore body is smaller than the natural angle of repose of the ore, the thickness is thinner and the bottom plate is relatively flat, the pseudo-tilted working face or the fan-shaped working face can be used for propulsion, and the electric raft should be located in the patio connecting passage;
3 The angle of inclination of the ore body is greater than the natural angle of repose of the ore. When the thickness of the ore body is uneven or the floor undulation is variable, the horizontal working face should be used for propulsion; the electric raft can be located in the patio contact road;
4 When the thickness of the ore body is less than 3m , it should be promoted by reverse inclination and full thickness. When the thickness of the ore body is greater than 3m , it is advisable to adopt stratified propulsion or super-layer advancement. Automatic Screw Feeder With Intelligent Count
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