A Mining Method for Segmented Filling of Inclined Medium Thickness and Above Orebody

Abstract

The invention discloses a segmental filling mining method for inclined medium-thick ore bodies, the steps of which are: stope structure and ore block layout, mining alignment and cutting, mining, stope ventilation, stope filling, and ore pillar recovery. The overall box-column frame bearing structure of "rhombic stope + mine pillar" is adopted to ensure the stability of the mining roadway and reduce the impact of mining and cutting engineering on stope mining. Divide the stope into a rhombus structure to improve the stability of the stope, combine the deep hole mining in the diamond stope with large structural parameters and the shallow hole mining with the upward horizontal layered filling method, improve the production capacity and efficiency of the stope, and ensure the safety of ore Recycling, reducing ore depletion. Through the staggered arrangement of diamond-shaped stopes up and down, continuous mining without top and bottom pillars is realized. The diamond-shaped stope structure is more suitable for the geometric shape of gently inclined and inclined ore bodies, and reduces the dilution rate of mined ore. Build a bottom trench structure that integrates rock drilling and ore extraction to reduce the amount of mining and cutting work. The inverted V-shaped structure at the top of the diamond-shaped stope is conducive to the bearing of the filling body and reduces the requirements for filling and top connection.

Description

technical field [0001] The invention belongs to the technical field of mining engineering, and in particular relates to a segmental filling mining method for inclined medium-thick ore bodies. Background technique [0002] Inclined orebodies above medium thickness refer to a type of orebody with a dip angle of 30°-55° and an orebody thickness (true thickness) greater than 10m. This type of orebody is restricted by its occurrence, and the mine mainly uses upward Horizontal layered filling mining method, chassis funnel segmented mine room method and pre-controlled roof middle deep hole segmented filling method are used for mining. Especially when the ore body is broken, the upward horizontal layered filling method or the upward approach filling method is mainly used for ore mining. [0003] As underground metal mines gradually enter deep mining, affected by complex factors such as high stress and frequent mining disturbances, the frequency and degree of flaking and caving of s...

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Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the present invention provides a segmental filling mining method for inclined medium-thick ore bodies, adopting the overall box-column frame bearing structure of "rhombic stope + ore pillar", which ensures the stability of the mining roadway While improving the stability of the mining area, it reduces the impact of mining and cutting engineering on the stope mining, and the retention of ore pillars provides a necessary condition for mining irregular ore bodies; the diamond-shaped stope structure is adopted, and the stope perimeter is uniform. The distribution of rock stress maximizes the use of the bearing capacity of the surrounding rock mass itself, which improves the stability of the stope; the combination of deep hole mining in the diamond-shaped stope with large structural parameters and the mining of upward horizontal layered filling methods adopts large structural parameters Medium and deep hole mining improves the production capacity and efficiency of the stope, and adopts the upward horizontal layered filling method to mine the irregular ore body, which effectively solves the problems of high dilution rate and low recovery efficiency of the irregular ore body; through the diamond-shaped stope The up and down staggered arrangement realizes continuous mining without top and bottom pillars; the diamond-shaped stope structure is more suitable for the geometric shape of gently inclined and inclined ore bodies. Since the shape of the diamond-shaped stope can be adjusted, it makes the ore body shape and the thickness of the ore body The adaptability is enhanced, which reduces the mixing of the upper and lower wall rocks in the process of mining, and reduces the ore dilution rate; builds a bottom trench structure that integrates rock drilling and ore extraction, optimizes the layout of the mining project, and reduces the ore dilution rate. Mining and cutting engineering volume; the V-shaped structure at the bottom of the diamond-shaped stope is conducive to the transportation of ore and improves the production efficiency of the stope. The inverted V-shaped structure at the top of the diamond-shaped stope is conducive to the bearing of the filling body and reduces the requirements for filling and top connection ;Using remote control scraper to mine, ensuring the safety of mining operations

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