It is to mix the appropriate filling material with water to form a uniform concentration of mortar. The natural filling head or pumping pressure is used to transport the filling material to the working face to be filled through the pipe edge or the hole connected to the pipe edge. After the filling material is dehydrated, the filling body is formed, and the dissociated water flows into the roadway ditch and the sedimentation tank from the pool water and the courtyard, and finally enters the water tank and is discharged to the outside of the pit.
The waterside filling mining method and the dry filling mining method are basically the same in structure, except that the filling system is different, the filling material, and the filling process are not. The hydraulic filling mining method also divides the ore blocks into two-step mining (first mining and post mining). The mining room is stratified up and down from the top to the bottom, and the stratified hydraulic filling is carried out; the pillars are also recovered by the same method.
(2) Classification of hydraulic filling mining methods: can be divided into three categories:
(1) Upward stratified water sand filling mining method;
(2) Downward layered water sand filling mining method;
(3) Bi-type water sand filling mining method;
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