A segmented open-field mining method with inclined thin veins

Abstract

The invention provides a segmented empty field mining method for a tilting thin vein. The method comprises the steps that (a) two segmented ore rooms are divided in the vertical direction of ore blocks, and mining is conducted to make a lower ore room exceed an upper ore room; (b) penetrating pulse conveying roadways horizontally penetrating the lower ore room are distributed on the middle of a lower segmented conveying roadway, one ends of the penetrating pulse conveying roadways are directly connected with the lower segmented conveying roadway, the other ends extend outwards, middle segmented drop shafts are perpendicularly arranged on the penetrating pulse conveying roadways, the upper ends penetrate through the top of the lower ore room to connect to an upper segmented conveying roadway, and the lower ends communicate with the penetrating pulse conveying roadways; and (c) ores of the lower ore room is transported through the lower segmented conveying roadway and the penetrating pulse conveying roadways in sequence, and the ores of the upper ore room are transported to the middle segmented drop shafts through the upper segmented conveying roadway and then enter the penetrating pulse conveying roadways from the middle segmented drop shafts to be transported. This method can not only improve the transport efficiency of the ores of the tilting thin vein, but also realize production at the same time on the multi-working surface and improve production capacity.

Description

technical field [0001] The invention belongs to the technical field of metal ore mining, and in particular relates to a segmented open-field mining method with inclined thin veins. Background technique [0002] Some metal deposits in hard rock and inclined thin veins in southern my country have poor continuity, branched and complex ore bodies, and the geological conditions of deposits are unstable. For such deposits, the traditional mining methods mainly include the ore retention method and the room-and-pillar method, see "Underground Mining of Metal Deposits". [0003] Both the retaining method and the room-and-pillar method have the following two disadvantages in the mining of inclined and thin veins: on the one hand, due to the slope of the ore veins, the thickness is thin, which makes it difficult for large-scale rock drilling equipment and mining equipment to be effectively used in such mines, especially in mining. Electric rakes can only be used for ore handling in th...

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Problems solved by technology

[0004] In order to overcome the shortcomings of low mining efficiency and poor stope safety in the existing room-and-pillar method and ore retention method when mining inclined thin veins, the present invention proposes an improved segmented open-field mining method for inclined thin veins. By dividing the middle section of the stope, it can not only improve the ore handling efficiency of the inclined thin vein stope, but also realize the simultaneous production of multiple working faces and increase the production capacity. In addition, it can avoid areas with high stress in the stope to ensure safe production

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