Medium thick heavy-pitch crushed ore body frame type artificial top downward segmenting cemented filling method

Abstract

The invention discloses a medium thick heavy-pitch crushed ore body frame type artificial top downward segmenting cemented filling method which comprises the following steps: dividing chamber jambs along the trend of an ore body; adopting a rail-less mining aligning system; pre-constructing a high-strength reinforced concrete artificial top in a segmented drilling lane; adopting a stoping sequence from up to down; performing drilling and blasting ore removal on the ore body through the segmented drilling lane at bottom; adopting medium-length hole drilling and remotely controlling a scraper to discharge ore; after finishing the mining of the chamber, utilizing concrete tailings to perform cemented filling; after finishing the mining of the jambs, utilizing concrete tailings or pure tailings to perform cemented filling; after completely stoping the mine chamber in the frame under the protection of the concrete artificial top, starting to stope the jamb adjacent to the segment, and meanwhile stoping the corresponding mine chamber in the frame of the next segment, and then stoping the corresponding jamb of the next segment; and after completely mining the chamber jamb in the middle segment, immediately turning towards the lower middle segment for stoping. The method provided by the invention has the advantages that the safety for mining the heavy-pitch medium thick crushed or ultra-crushed ore body is high, the resource depletion loss rate is low, the mechanical degree is high, the production capacity is high, and the like.

Description

technical field [0001] The invention relates to a frame-type artificial false roof downward segmental cementation filling method for a sharply inclined medium-thick broken ore body. This method is mainly suitable for steeply inclined medium-thick mines with a dip angle of 50-90°, a horizontal thickness of 4-10m, broken or extremely broken ore bodies but relatively stable or stable surrounding rocks, and high operating safety, large production capacity, and high efficiency. body mining. technical background [0002] Aiming at the mining of steeply inclined medium-thick broken or extremely broken ore bodies, which are difficult to mine, the segmental caving method and the downward layered filling mining method or approach mining method are commonly used at home and abroad, such as the patent CN101718196A disclosed "a kind of "Soft and broken ore body mining method" adopts the non-bottom pillar segmental caving mining method. Although this method has simple process, high safet...

AI Technical Summary

Problems solved by technology

[0002] Aiming at the mining of steeply inclined medium-thick broken or extremely broken ore bodies, which are difficult to mine, the segmental caving method and the downward layered filling mining method or approach mining method are commonly used at home and abroad, such as the patent CN101718196A disclosed "a kind of "Soft and broken ore body mining method" adopts the non-bottom pillar segmental caving mining method. Although this method has simple process, high safety and large production capacity, its disadvantage is that the dilution loss rate is large, and it is not allowed for high-grade ore body mining. And it is easy to cause surface subsidence; patent CN85109137 discloses a "downward layered mining method for metal ore deposits". For the support structure, under this support structure, the ore body is fully stratified from top to bottom, and the mining is carried out in a shallow way. Although the dilution rate and loss rate of this method are low, the production capacity is correspondingly small, and the impact on the surface Great environmental damage

Patent CN101139930A discloses a "method of lowering the roof in advance by turning from a high access route to a lower access route" and adopts a downward approach cemented filling method, which has good safety, dilution and low loss rate, but the route mining method has complicated procedures and a cycle of operation. Fast, complex management, small production capacity

There is currently no effective mining method for medium-thick and sharply inclined broken ore bodies, especially those with unstable ore bodies that require large production capacity, high safety, and low loss rate.

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