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Stepless cross pitch sectional continuous backfilling mining method of gently-inclined medium-thickness ore body

A technology of gently inclined medium-thickness and filling mining method, which is applied in the direction of filling, ground mining, mining equipment, etc., can solve the problems of large exposed area of ​​empty area, complex mining process, and low degree of roof connection, and achieve simple process, mining The effect of high efficiency and small environmental damage

Inactive Publication Date: 2012-05-02
WENGFU (GRP) CO LTD
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Problems solved by technology

[0002] Metallurgical Industry Publishing House Mining Manual Volume Four Chapter 20 Filling Mining Method In wall vertical strip filling mining method, its shortcoming is: for mining ore bodies whose thickness is between 4 and 12 meters, the dilution rate High, the exposed area of ​​the gob is large, the mining ratio is large, the degree of roof connection is not high, and the mining process is complex

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  • Stepless cross pitch sectional continuous backfilling mining method of gently-inclined medium-thickness ore body
  • Stepless cross pitch sectional continuous backfilling mining method of gently-inclined medium-thickness ore body
  • Stepless cross pitch sectional continuous backfilling mining method of gently-inclined medium-thickness ore body

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Embodiment Construction

[0023] Mining example of the No. 5 shaft of the Mill Mine without stages along the strike and then filling mining method:

[0024] The ore body mined by Wengfu Phosphate Mineral Mill is a marine sedimentary phosphate deposit, with a thickness of 4-12 meters and an inclination angle of 6-14°. The immediate roof is the first member of the Dengying Formation (Zb 2-1 ) dolomite, siliceous agglomerate dolomite and siliceous rock, with a thickness of 16-20 meters, and the direct floor is generally the third member of the Doushantuo Formation (Zb 1-3 ) White siliceous rock containing colloidal phosphate lumps, the roof is a relatively stable rock formation, and the ore is not flammable.

[0025] 1. Development: adopt the development method of the main adit-slope, and arrange the turn-back trackless ramp along the ore body to reach each layered entry; arrange two return air inclined shafts at the end of the ore body to communicate with each layered entry ; Arrange a substation cha...

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Abstract

The invention discloses a stepless cross pitch sectional continuous backfilling mining method of a gently-inclined medium-thickness ore body, which comprises the steps of exploiting, development, cutting, recovery and filling. By adopting a bottom-up retreating mining method and by using layered entries to conduct once-and-for-all retreating mining to the ore body on the two sides, the tunnel cutting construction is reduced, the development ratio is small and the process is simple; and by caving the ore body on the two sides at one time, the production efficiency is high, ore pillars are not left, tailings or gangues are used for filling, the recovery ratio is high, the environmental damage is small, the dressing tailings and the gangues produced in open air can be used and the geological disasters are reduced. By adopting the method, the ore recovery ratio can be improved, the ore dilution rate can be reduced and the discharge of ore wastes and the used land can be decreased.

Description

technical field [0001] The invention relates to mine mining technology, in particular to a gently inclined medium-thick ore body stepless along the strike strip continuous subsequent filling mining method. Background technique [0002] Metallurgical Industry Publishing House Mining Manual Volume Four Chapter 20 Filling Mining Method Wall vertical strip filling mining method, its shortcoming is: for mining ore bodies with a thickness of 4 to 12 meters, the dilution rate High, the exposed area of ​​the gob is large, the mining ratio is large, the degree of roof connection is not high, and the mining process is complicated. Contents of the invention [0003] The object of the present invention is to address the deficiencies of the prior art, and provide a mining method with a dip angle of 6-20° and a thickness of 4-12 meters in a gently inclined medium-thick ore body without stages along the strike and continuous subsequent filling mining method. [0004] The technical so...

Claims

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Application Information

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IPC IPC(8): E21C41/22E21F15/00
Inventor 何克舰周文勇黄光柱袁旗张秋炜
Owner WENGFU (GRP) CO LTD
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