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Retreating type multi-layer stoping mining method for ore body with inclination from thin to medium thickness

A mining method and a back-up technology, applied in the field of back-up multi-layered mining, can solve the problems of many layers, many turquoise support work, low efficiency, etc.

Active Publication Date: 2022-02-11
深圳市中金岭南有色金属股份有限公司凡口铅锌矿 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, the purpose of the present invention is to overcome the deficiencies and defects of the prior art, to provide a thin to medium thick ore body receding type multiple layered back mining method, to overcome the need for layer-by-layer mining in the prior art, the efficiency is low, and Wide exposure of the stope, more turquoise support work, more layers and other defects

Method used

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  • Retreating type multi-layer stoping mining method for ore body with inclination from thin to medium thickness
  • Retreating type multi-layer stoping mining method for ore body with inclination from thin to medium thickness
  • Retreating type multi-layer stoping mining method for ore body with inclination from thin to medium thickness

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Experimental program
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Effect test

Embodiment 1

[0039] see figure 1 , figure 1 It is a top view of a stope suitable for the receding multiple layered mining method of thin to medium-thick ore bodies above the slope of the present invention. It can be seen from the figure that before mining, a control line is set for the ore body along the ore body trend, and the range of stope A is delineated.

[0040] Bottom tunneling: excavate the ore body 1 to the end of the ore body to form a bottom roadway 10, and set a certain length of bottom roadway 10 from the end of the bottom roadway 10 as the bottom roadway trough area 100. It should be noted that the direction of the bottom roadway can be the same as that of the ore body, or it can be perpendicular to the direction of the ore body. body in the same direction.

[0041] Construction patio: construct a patio 40 up to the upper middle section from the roof of the trough area 100 of the pull bottom lane, which is used as a ventilation channel and a cutting slot to provide a free...

Embodiment 2

[0051] The main steps of the mining method in this embodiment are the same as those in Embodiment 1, the only difference being that the sequence of blasting is different when the slotting area is raised twice, specifically:

[0052] In this embodiment, when the channeling area is raised twice, the first raising of the channeling area 300 of the second rock drilling road located on the uppermost layer is carried out, specifically the channeling area 300 of the second rock drilling road. Construction of multiple first upward blastholes 120 on the top plate to the first design height, the first design height is 6m, and multiple first upward blastholes 120 are charged and blasted, and the ore is transported out after blasting ; Then carry out the first elevating on the first rock drilling lane trough area 200 ;

[0053] Then carry out the second elevation to the second rock drilling lane slotting area 300 located on the uppermost layer, specifically to construct a plurality of fir...

Embodiment 3

[0055] The main steps of the mining method in this embodiment are the same as those in Embodiment 1, the only difference being that the sequence of blasting is different when the slotting area is raised twice, specifically:

[0056] In this embodiment, when the channeling area is raised twice, the channeling area 300 of the second rock drilling road, the channeling area 200 of the first rock drilling road and the channeling area 100 of the bottom roadway are raised for the first time at the same time. Specifically, constructing a plurality of first upward blastholes 120 to The first design height, the first design height is 6m, and simultaneously to a plurality of the first rock drilling roadway dragging area 300, the first rock drilling roadway dragging area 200 and the bottom roadway dragging area 100 Charge the gun hole 120 and carry out the blasting, and the ore is transported out after the blasting.

[0057] Then carry out the second elevation to the slotting area 300 of...

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Abstract

The invention discloses a retreating type multi-layer stoping mining method for an ore body with the inclination from thin to medium thickness. The retreating type multi-layer stoping mining method comprises the steps of undercutting tunneling, courtyard construction, rock drilling roadway tunneling, groove broaching area cutting mining, two-time heightening of a groove broaching area, undercutting roadway and rock drilling roadway lateral ore caving and filling and the like. The mining method is high in stoping efficiency, small in exposed area of the working face, safe in operation and low in cost, and the mining preparation work amount is greatly reduced.

Description

technical field [0001] The invention relates to the field of mining, in particular to a retreating multiple layer back mining method. Background technique [0002] Thin to medium-thick orebodies above inclination refer to a type of orebody with an orebody dip angle of 55° and an orebody thickness (true thickness) between 2 and 10m. For this type of mine, the upward horizontal layered filling mining method is mainly adopted. 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] The upward layered filling mining method adopts bottom-up layered mining, and each layer is first mined ore, and then filled with filling materials to support the two sides of the goaf and serve as a working platform. The method of “drawing the trough and simultaneously side collapse” is specifically: first excavate the roadway along the length direction of the ore body to the end of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/22F42D1/00F42D3/04
CPCE21C41/22F42D1/00F42D3/04Y02A30/60
Inventor 谢胜亢太鹏曹铭宇梁德义钟杰王文洋黄强邹志晴于文涛黄燕华崔国伟谢国强
Owner 深圳市中金岭南有色金属股份有限公司凡口铅锌矿
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