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Steep inclined ore body inclined courtyard strip mining method

A technology of steep inclination and mining method, which is applied in the field of steep sloping ore body inclination raise strip mining method, which can solve the problems of large roof exposure area, difficulty in roof inspection, and large ore loss

Active Publication Date: 2020-11-27
GUIZHOU ZIJIN MINING
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] Disadvantages: The exposed area of ​​the roof is large; the mining height is more than 3m, and it is difficult to check the roof; when there are many ore pillars, the ore loss is large

Method used

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  • Steep inclined ore body inclined courtyard strip mining method
  • Steep inclined ore body inclined courtyard strip mining method

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] see figure 1 and figure 2 , a steep-inclined ore body-inclined raise-strip mining method, the specific steps are as follows:

[0025] 1) Accurate cutting: including cutting patio 1, bottom flat port 2 along the Meridian, central liaison port 3 and upper liaison port 4;

[0026] First, the YT-28 and YSP-45 rock drills are used to excavate the bottom of the ore body 10 along the vein section of the Ladiping Port 2 with a section of 2.0×2.0m, which is u...

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Abstract

The invention discloses a steep inclined ore body inclined courtyard strip mining method. The method includes the steps that firstly, a stope drift is excavated at the bottom of an ore body along an ore-bearing vein, then cutting courtyards are divided in the inclination direction of the ore body from the stope drift every 6 meters from inside to outside, a middle connection roadway and an upper connection roadway are transversely excavated after the height of the cutting courtyards is 15 meters, and the middle connection roadway and the upper connection roadway are used for constructing pedestrian and air return channels; and ore blocks are used for retreating type stoping strip by strip from inside to outside in the direction, and a lower section chamber and an upper section chamber stoped in the same courtyard. According to the method, strip one-time caving method is utilized in steep oblique fault ore body stoping, stoping can be carried out synchronously, and the problem that thetop of the oblique fault ore body is broken and accordingly upward layered construction of a shrinkage method is difficult is solved. Operators do not need to enter a goaf for the second time and therefore the operation safety of constructors is ensured. An electric rake is used for ore removal, fallen ore automatically falls to the stope drift below, explosive piles are concentrated, and ore removal is easy; and cutting stripping and stoping operation are carried out at the same time, and the stoping period of a stope is greatly shortened.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to a method of strip mining with a steeply inclined ore body inclination. Background technique [0002] The comprehensive mining method is a conventional mining method, which is adopted by most of the mines. The ore body is divided into ore blocks for mining, and the mining face is fully advanced along the direction of strike or reverse inclination. Equipment and workers are in the empty field. The empty space formed during the mining process is mainly maintained by the bearing capacity of the surrounding rock, supplemented by regular or irregular ore pillars, waste rock stacks or artificial pillars; this method has advantages and disadvantages: [0003] Advantages: small amount of mining work; simple mining process; good ventilation; can be applied to conditions of irregular ore body shape and dip angle changes, with great flexibility. [0004] Disadvantages: The exposed area of ​​...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/16F42D1/00F42D3/04
CPCE21C41/16F42D1/00F42D3/04Y02A30/60
Inventor 徐亮邓国梁朱立申唐鹏善谭林威王昌翁关功华罗来和周正均张那张希正姜涛
Owner GUIZHOU ZIJIN MINING
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