A Mechanized Upward Layer Wedging and Mixed Filling Mining Method

Abstract

The invention discloses a mechanized upward-slicing wedging mixed filling mining method. When mining is conducted through the upward horizontal slicing filling process, upward stoping and filling are conducted with each slice being 3-4 m, and slices from bottom to top are alternately subjected to full tail sand cementing filling and waste stone wedging mixed filling. During wedging mixed filling, waste stone is stacked upward to form a quadrangular frustum pyramid. The laying range of the bottom waste stone is arranged according to the size of a stope, and certain spacing is kept with an adjacent stope. Tail sand cementing filling is still conducted on the two sides of a waste stone pile, and making contact with upper and lower layered tail sand cementing filling bodies is conducted, the whole strength of a mixed filling body is guaranteed, and dilution caused by caving of an ore body or surrounding rock at the time of being unstable is stopped. When the upward horizontal slicing filling process is adopted, the strength of the filling body can be guaranteed, and a large quantity of the downhole waste stone can be consumed, so that the waste stone is not out of a pit, and accordingly the cementing filling material is saved, and the filling cost is reduced effectively.

Description

technical field [0001] The invention relates to an underground mine mining method, in particular to a mechanized upward layered wedging and mixed filling mining method. 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 relatively complicated, the cost is high, and the labor productivity and ore block production capacity are relatively low. [0...

AI Technical Summary

Problems solved by technology

For mines mined by layered filling method, the technology and technology of using tailings for cemented filling are relatively mature, but currently the filling technology for mine waste rock and full tailings is still used separately, so most mines have not Effective use of waste rock and tailings for filling

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