Stope structure arrangement method applicable to gently inclined medium and thick ore body combination sectioned mining

Abstract

The invention discloses a stope structure arrangement method applicable to gently inclined medium and thick ore body combination sectioned mining. Lower sectional stopes (2) and upper sectional stopes(3) are alternately arranged in the vertical direction of an ore body every 10-15 m, each lower sectional stopes (2) and upper sectional stopes (3) are combined into a mining unit (1); studdings (4)are formed at the ends of the mining unit (1); cutting troughs are formed in the stopes with slot raises (10) as a free surface; ore falls into ditches (9); and ore is loaded in an ore loading approach road (8) through a carry-scraper, carried to an ore draw shaft (11) through an ore removal roadway (7), and then dropped to a haulage roadway (12) to be loaded and conveyed out. Every two sectionalstopes are divided into a mining unit for mining, projects such as the ore removal roadway, the ore draw shaft and a slope road linking taxiway are shared, the accurate mining cost is reduced, the preparation time for accurate mining work is saved, the mining efficiency is improved, mined waste rock can be processed into building materials for sale, and new storage space for tailings filling is additionally formed.

Description

Technical field [0001] The invention belongs to the technical field of underground mine mining, and specifically relates to a stope structure arrangement for the mining of gently inclined medium-thick ore bodies. Background technique [0002] The gently inclined medium-thick ore body is an ore body with a dip angle of 5°-30° and a thickness of 4-15m. Due to its inherent mining technical conditions, it has always been regarded as a difficult mining body. Due to the small inclination of the ore body, the use of transport equipment to enter the stope for ore extraction is very unsafe, or the structure at the bottom of the footwall is excavated to load the ore. The thickness of the ore body is relatively small, resulting in large mining and cutting works and high mining costs. [0003] In the mining of gently inclined medium-thick ore bodies in domestic and foreign mines, most of them still mainly adopt the room and pillar method or the open field method with the bottom structure of t...

AI Technical Summary

Problems solved by technology

This method needs to arrange the bottom structure of the ore in each section, including the ore roadway, ore loading approach, cutting trench, slip shaft and connecting road, etc., because the thickness of the ore body is not large, resulting in a large mining-to-cut ratio and low mining costs. substantial improvement

[0006] It can be seen that there is currently no safe and low-cost mining method for the mining of gently inclined medium-thick ore bodies.

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