Waste rock and cementing layered wedge bonding filling mining technology and structure thereof

Abstract

The invention discloses a waste rock and cementing layered wedge bonding filling mining technology and a structure thereof. In the mining process through an upward horizontal cut and fill method, upward stoping and filling are conducted by adoption of layers with the depth being 3-4 m; three layers serve as a section; the first layer and the third layer are separately subjected to cementing filling through tailings; the second layer in the middle is filled with waste rock in a spaced and mixed mode; the bottom face pavement range is set according to the size of a stope, and a certain distance is kept from the periphery; and the periphery of a waste rock pile is still subjected to cementing filling through tailings, and the tailings are in contact and connection with cementing filling bodies of the upper layer and the lower layer. By adoption of the waste rock and cementing layered wedge bonding filling mining technology and the structure thereof, the problems that in the prior art, technologies are complex, the cost is high, the labor productivity and the ore block production capacity are relatively low, and waste rock cannot be reasonably applied are solved, and by adoption of a layered wedge bonding mixed filling method, the strength of the filling bodies is ensured, a large amount of downhole waste rock is consumed, cementing filling materials are saved, and the layered wedge bonding mixed filling method has the characteristics of being safe in operation, high in filling efficiency and low in cost.

Description

technical field [0001] The invention relates to an upward horizontal layered filling mining structure and its technology in an underground mine, in particular to a waste rock and cemented layered wedging filling mining technology and its structure. Background technique [0002] When the surface does not allow caving, the ore grade is high, the value of the ore deposit is high, or the surrounding rock of the upper and lower walls of the ore body is moderately stable or poorly stable, the filling mining method is generally used for mining. In this method, the filling body is used to control surrounding rock collapse and surface movement for ground pressure management, and mining is carried out on or under the protection of the formed filling body. It has strong adaptability, high ore recovery rate, low dilution rate, safer operation, can utilize industrial waste, protect the surface, etc.; the disadvantage is that the process is complicated, the cost is high, and the labor pro...

AI Technical Summary

Problems solved by technology

[0007] The invention provides a mining process and structure that can use a large amount of underground waste rocks for backfilling, combined with the waste rock and cemented layered wedge filling of full tailings cemented layered wedged filling, and solves the complex process and high cost of the prior art , labor productivity and ore block production capacity are relatively low, waste rock cannot be used reasonably, surface storage is troublesome, and transportation costs are high

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