CN101539020A - Upward cut-and-fill mining method - Google Patents

Upward cut-and-fill mining method Download PDF

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Publication number
CN101539020A
CN101539020A CN200910043192A CN200910043192A CN101539020A CN 101539020 A CN101539020 A CN 101539020A CN 200910043192 A CN200910043192 A CN 200910043192A CN 200910043192 A CN200910043192 A CN 200910043192A CN 101539020 A CN101539020 A CN 101539020A
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CN
China
Prior art keywords
hole
big gun
stope
district
fill
Prior art date
Application number
CN200910043192A
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Chinese (zh)
Inventor
周爱民
李向东
张木毅
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长沙矿山研究院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 长沙矿山研究院 filed Critical 长沙矿山研究院
Priority to CN200910043192A priority Critical patent/CN101539020A/en
Publication of CN101539020A publication Critical patent/CN101539020A/en

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Abstract

The invention discloses an upward cut-and-fill mining method which carries out the centralized operation by taking cut-and-fill stopes as units. The method comprises the following steps: firstly, drilling all the blast holes which are upward blast holes in the cut-and-fill stopes; and then, charging all the blast holes to be charged in the stopes and carrying out the ore-caving and ore-removal by one-time blasting. The invention can effectively improve the mining efficiency and the production capacity of the stopes; moreover, the blast is centralized in the upward blast holes, thereby reducing the yield of blasted boulders; in addition, by adopting the one-time upward-hole blasting operation, the invention improves the roof flatness of the stopes, reduces the workload of roof control and guarantees higher safety of operating personnel.

Description

Upward cut-and-fill mining method

Technical field

Technology that the present invention relates to dig up mine and technology relate in particular to upward cut-and-fill mining method.

Background technology

Upward cut-and-fill mining method be in mining by layering raise mining mineral building, nugget or panel, each layering elder generation extracted ore, method of mining by the way of filling that filling is carried out in the goaf beyond the required working space of a layering after the back production then.The working space of this mining codes is positioned under the ore top board, is applicable to that exploitated ore is firm, country rock moderately stable, high-dipping and all thickness of inclination and the ore body of shape.What upward cut-and-fill mining method adopted at present is the lateral aperture ore falling mode, be that first driling explosion is caunched and formed the rock drilling space, again with horizontal direction Drilling big gun hole, powder charge, explosion, ore removal, and then continue with horizontal direction Drilling big gun hole, powder charge, explosion, ore removal, so circulation, a layering stope need just can be finished through the rock drilling more than ten, powder charge, explosion, ore removal back production circulation.The defective one of this lateral aperture ore falling mode is that the explosion drilling depth is little each time, explosion ore deposit amount is few, and cause digging up mine production efficiency and production capacity are low; The 2nd, fall that the ore deposit boulder yield is higher, lumpiness is inhomogeneous, it is big that stope top board irregularity after the back production explosion, sled hair protect the top workload; The 3rd, in the layering stope, want gradation to organize work cycle, organism of production and the complex management of rock drilling, powder charge, explosion, each operation of ore removal.Cutting method commonly used both at home and abroad is prismatic slotting, vertical box cut or cone cut, and the blow-up rate in big gun hole is low, has only 75~85%.

Summary of the invention

The object of the present invention is to provide a kind of blow-up rate height, mining efficiency height, production capacity of mining field are big, the bulk output capacity the is low concentrated mining technology and the upward cut-and-fill mining method of technology.

Upward cut-and-fill mining method of the present invention is that operation is concentrated in the unit with the layering stope, at first whole blasthole drilling cutters are finished at the layering stope, and all whole Drillings in big gun hole are up-hole, then to once carrying out explosion ore caving, ore removal after all loaded hole powder charges of stope.

The present invention adopts as can be seen from technical scheme of the present invention is the reinforcement back production of concentrating rock drilling, concentrated charge, concentrating explosion and concentrated ore removal, finish the stoping operation of whole layering stope unit with primary drilling, powder charge, explosion, ore removal work cycle, mining efficiency and production capacity of mining field have been improved, and, reduced the output capacity of the ore deposit bulk that falls owing to be that upward hole is concentrated explosion.Owing to adopt upward hole onepull operation, improve stope top board planeness in addition, reduced the workload of roof control (the sled hair protects the top), improved operating personnel's safety guarantee.

Description of drawings

Fig. 1 is the structural representation of layering stope of the present invention.

Fig. 2 is the sectional view of Fig. 1 along the A-A line.

Fig. 3 is that schematic diagram is arranged in big gun hole, A of the present invention district.

The specific embodiment

From Fig. 1, Fig. 2 is to be that the unit carries out the big gun pore size distribution with whole layering stope as can be seen during the invention process, and wherein Fig. 2 has shown stope big gun of the present invention hole arrangement.As can be seen from Figure 2, the cloth porose area of layering stope is divided into A, B, three districts of C successively by the mediad periphery, and the density in cloth hole is reduced successively by the mediad periphery.As shown in Figure 3, wherein the A0 in A district is a centre bore, and the aperture is φ 60~φ 100mm (aperture, A0 hole that present embodiment adopts is Φ 80mm), and the aperture of other big gun hole (removing the A0 hole) is φ 40~φ 50mm, hole depth 3~5m (aperture that present embodiment adopts is φ 50mm, blast hole depth 4m).The A1 in A district, the little burden 300mm of A2 Kongzui, the little burden 500mm of A3 Kongzui; The little burden 800mm of B district big gun Kongzui, distance between borehole 1200mm; The C district little burden of big gun Kongzui is 1200mm, distance between borehole 1400mm; Stope is lateral opening apart from stope border 450mm.

These big gun holes of parallel Drilling (present embodiment adopts the automatic extension bar upward drilling of HS105X hydraulic pressure chassis to concentrate on the Drilling to parallel hole) that begin to make progress after big gun hole cloth is good, the rock drilling time is 6 work teams, rock penetration performance 117m/ machine-team.

After blasthole drilling has been cut a hole, blasting charge, A0 hole blasting charge not wherein, the A1 hole is 1/2nd sections powder charges at the bottom of the hole only, and being detonated in the A1 hole, blast area that the back forms is the cucurbit shape, and other big gun hole all requires to install explosive routinely.The explosive that present embodiment adopts is an emulsion, NT30/NBB150 down-hole truck charging, the powder charge time 4 classes, loading rate 1368kg/ machine-team.Detonating fuse will be overlapped after explosive installs, notice that the detonating fuse in the same section big gun hole of detonating overlaps mutually, lap length is not less than 150mm.

Adopt non-electric ms detonator+detonating fuse hole base initiation mode, detonate, concentrate explosion by the order in A district, B district, C district, shot hole blasting rate 95%, maximum size is greater than the bulk output capacity 1.29% (seeing Table 1) of 500mm.At first detonate by the big gun hole of Pear-Shaped cutting method design, form the Pear-Shaped blast area; Detonate in proper order by A2, A3, B1, B2, B3, B4 hole around the Pear-Shaped blast area then; After drawing back along the full section of stope width, press C1, C2 ... detonating as the section of a detonating order in per two artillery salvo holes of Cn, all detonates up to the big gun hole of whole stope, finishes whole stope bursting work.Help to be subjected to the destruction of detonation stresses ripple in order to reduce stope two, lateral opening and artillery salvo hole, the back section explosion together of stope.

Ore removal is concentrated in the intact back of explosion: adopt ST-31/2 type 3m 3Scraper is concentrated ore removal, the ore removal time nine classes, ore removal efficient 98.4t/h (seeing Table 1).

Table 1

Claims (6)

1, a kind of upward cut-and-fill mining method, it is characterized in that with the layering stope being that operation is concentrated in the unit, at first whole blasthole drillings cutter is finished, and all whole Drillings in big gun hole are up-hole, then to once carrying out explosion ore caving, ore removal after all loaded hole powder charges of stope at the layering stope.
2,, it is characterized in that the density in cloth hole is reduced successively by the mediad periphery when layering stope cloth big gun hole according to the described upward cut-and-fill mining method of claim 1.
3, according to claim 1 or 2 described upward cut-and-fill mining methods, the center that it is characterized in that layering stope cloth porose area is that an aperture is the hole of not powder charge of φ 60~φ 100mm, and other aperture, big gun hole is φ 40~φ 50mm, hole depth 3~5m.
4, according to claim 1 or 2 described upward cut-and-fill mining methods, it is characterized in that when layering stope cloth big gun hole, the cloth porose area of layering stope is divided into A, B, three districts of C, the wherein little burden 200~600mm of A district big gun Kongzui successively by the mediad periphery; The little burden 600~900mm of B district big gun Kongzui, distance between borehole 800~1300mm; The C district little burden of big gun Kongzui is 900~1300mm, distance between borehole 1000~1500mm; Stope is lateral opening apart from stope border 400~500mm.
5, according to the described upward cut-and-fill mining method of claim 4, it is characterized in that in the big gun hole in A district decentre big gun Kongzui near and be distributed in only 1/2nd sections powder charges at the bottom of the hole of four big gun holes on two vertical center lines of big gun hole, center, making the blast area is the cucurbit shape.
6, according to the described upward cut-and-fill mining method of claim 4, the firing order that it is characterized in that respectively distinguishing the big gun hole is C district, B district, A district.
CN200910043192A 2009-04-23 2009-04-23 Upward cut-and-fill mining method CN101539020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910043192A CN101539020A (en) 2009-04-23 2009-04-23 Upward cut-and-fill mining method

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Application Number Priority Date Filing Date Title
CN200910043192A CN101539020A (en) 2009-04-23 2009-04-23 Upward cut-and-fill mining method

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CN101539020A true CN101539020A (en) 2009-09-23

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101858217A (en) * 2010-05-18 2010-10-13 中南大学 House pillar changeable panel upward demix filling mining method
CN102278114A (en) * 2011-09-01 2011-12-14 长沙矿山研究院 Method for mining mass caving ore in three-dimensional sub region
CN102359377A (en) * 2011-09-01 2012-02-22 长沙矿山研究院 Three-dimensional zoned collaborative caving mining method for pillar groups
CN102392641A (en) * 2011-08-02 2012-03-28 中钢矿业开发有限公司 Point pillar type full-ore-deposit middle-section-free upward high-layering continuous propelling fill mining method
CN104060991A (en) * 2014-06-26 2014-09-24 中南大学 Upward cut-and-fill mining method for in-vein slope ramp of gentle dip thin vein
CN108005653A (en) * 2017-10-24 2018-05-08 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 A kind of high stratification mechanization raise mining method
CN108708721A (en) * 2018-04-04 2018-10-26 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 To substoping method in a kind of mechanization

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101858217A (en) * 2010-05-18 2010-10-13 中南大学 House pillar changeable panel upward demix filling mining method
CN101858217B (en) * 2010-05-18 2012-03-21 中南大学 House pillar changeable panel upward demix filling mining method
CN102392641A (en) * 2011-08-02 2012-03-28 中钢矿业开发有限公司 Point pillar type full-ore-deposit middle-section-free upward high-layering continuous propelling fill mining method
CN102392641B (en) * 2011-08-02 2013-09-11 中钢矿业开发有限公司 Point pillar type full-ore-deposit middle-section-free upward high-layering continuous propelling fill mining method
CN102278114A (en) * 2011-09-01 2011-12-14 长沙矿山研究院 Method for mining mass caving ore in three-dimensional sub region
CN102359377A (en) * 2011-09-01 2012-02-22 长沙矿山研究院 Three-dimensional zoned collaborative caving mining method for pillar groups
CN104060991A (en) * 2014-06-26 2014-09-24 中南大学 Upward cut-and-fill mining method for in-vein slope ramp of gentle dip thin vein
CN104060991B (en) * 2014-06-26 2016-01-20 中南大学 A kind of for ramp upward ut and fill stoping in the arteries and veins of Gently inclined thin vein
CN108005653A (en) * 2017-10-24 2018-05-08 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 A kind of high stratification mechanization raise mining method
CN108708721A (en) * 2018-04-04 2018-10-26 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 To substoping method in a kind of mechanization

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Open date: 20090923