CN103967494A - Mining method for filling after shallow hole shrinkage - Google Patents

Mining method for filling after shallow hole shrinkage Download PDF

Info

Publication number
CN103967494A
CN103967494A CN201410159792.7A CN201410159792A CN103967494A CN 103967494 A CN103967494 A CN 103967494A CN 201410159792 A CN201410159792 A CN 201410159792A CN 103967494 A CN103967494 A CN 103967494A
Authority
CN
China
Prior art keywords
stope
filling
ore
lane
nugget
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CN201410159792.7A
Other languages
Chinese (zh)
Other versions
CN103967494B (en
Inventor
王志良
吉少杰
吉少清
吉少波
石军涛
柴延森
何永进
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANHUI DACANG MINING GROUP Co Ltd
Original Assignee
ANHUI DACANG MINING GROUP Co Ltd
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.)
Filing date
Publication date
Application filed by ANHUI DACANG MINING GROUP Co Ltd filed Critical ANHUI DACANG MINING GROUP Co Ltd
Priority to CN201410159792.7A priority Critical patent/CN103967494B/en
Publication of CN103967494A publication Critical patent/CN103967494A/en
Application granted granted Critical
Publication of CN103967494B publication Critical patent/CN103967494B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a mining method for filling after shallow hole shrinkage. The mining method for filling after shallow hole shrinkage comprises the steps of stope arrangement, stope preparation cutting and actual mining. According to the invention, the production safety is ensured, excellent working conditions and environment are ensured, pressure control is facilitated, the production capability is high, the efficiency is high, the impoverishment loss rate is low, surrounding rocks are maintained effectively, rock motions are reduced, and rocks are prevented from dropping off in quantity.

Description

A kind of shallow-hole shrinkage afterwards filling mining methods
Technical field
The present invention relates to mining methods field, specifically a kind of shallow-hole shrinkage afterwards filling mining methods.
Background technology
Due to metalliferous deposit occurrence condition complexity; ore and rock property are changeable; production technique constantly improves and is progressive, and traditional openstope method is specially adapted to the stable of ore and country rock, and goaf within a certain period of time; allow larger exposed area; but its shortcoming is the expansion with exploitation scale, goaf amount increases day by day, and mining area surface exists very large potential safety hazard; and because pillar recovery worsening condition, the rate of dilution are higher, be unfavorable for the protective mining of mineral resources.
summary of the inventionthe object of this invention is to provide a kind of shallow-hole shrinkage afterwards filling mining methods, have potential safety hazard and the high problem of the rate of dilution to solve prior art, to ensure the security reliability of pillar recovery.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of shallow-hole shrinkage afterwards filling mining methods, is characterized in that: comprise the following steps:
(1), stope is arranged:
According to the firm situation of ore deposit rock, determine that single stope top board exposed area is at 1000m 2below, be multiple nuggets by ore body division, the structural parameters of each nugget are: nugget length 65m, the high 4m of fore-set, funnel 2.6 × 2.6m; Nugget arranges along orebody trend, and nugget length, for wearing arteries and veins spacing, is arranged stope number according to nugget length, and stope arranges along orebody trend, and single length of stope is 50m, and width is orebody thickness, and fore-set 4m stays 10m studding between stope and stope;
(2), adopt accurate cutting:
Arrange arteries and veins transport lane, upper and lower rim along orebody trend, between upper lower burrs transport lane, arrange Chuan Mai lane, the distance of wearing between arteries and veins is 150m, and Chuan Mai lane is arranged in studding; Between Chuan Mai lane, ore body lower wall arranges ore removal connection lane, arranges dress ore deposit route by connection lane, then arranges the moat ditch gallery that undercuts, Qian Gou lane specifications section is 4.0 × 4.0m, at moat ditch heading, funnel makees in portion, specification is 2.6 × 2.6m, each funnel area of draw 40~50m 2; Back production is carried out in the utilization tunnel that undercuts; In studding, arrange return air raise, by connection lane and stope UNICOM, as stope ventilation, the kiloton of nugget is adopted and is cut than being: 6.56m/kt;
(3), actual mining:
(a), driling explosion: adopt YT-28 type hammer drill to carry out rock drilling, blast hole depth is 1.8m, blasthole diameter 38 ~ 40mm, shallow blasting adopts emulsion, manual charging, segmentation short-delay blasting, nonel tube detonates, second-time breakage is carried out in stope; Every layering ore deposit height that falls is controlled in 2.0m, for improving ore drawing efficiency, under drawhole, vibration ore dumping machine is installed, and to improve Ore flowability, improves drawhole handling capacity, reduces secondary breakage;
(b), stope ventilation: make freshly distinguished and admirablely entering stope work plane by transporting wear long arteries and veins lane, ore removal lane, vent (-escape) raise, lane along the pulse, dirty wind, through stope opposite side vent (-escape) raise, enters tailgate, discharges earth's surface through returnairshaft;
(c), ore removal: the ore that explosion is got off, be transported to this horizontal mine chute by scraper by extracting drift and lower wall transport lane, slip to next level stage transport lane, through locomotive haulage mine car, deliver to the system of slipping brokenly, be promoted to earth's surface;
(d), filling: adopt primary filling after ore drawing in stope, mineral building adopts all-tailing cemented filling, and the concentration of filling slurry is controlled at 63 ~ 65%, and the cement-sand ratio of bottom, goaf 5m height is 1:4, and top cement-sand ratio adopts 1:6;
(e), ore pillar reclaims: nugget curtain wall is after stage casing back production finishes, when reaching 2.5Mpa, strength of filling mass adopt the upward horizontal slice method of mining by the way of filling to carry out back production when above, stope both sides can retain the retaining wall ore pillar of 2 ~ 3m, prevent that Non cemented filling body from entering stope, to ensure pillar recovery safety;
(f), process in goaf: dead zone, goaf is processed and adopted afterwards tailing fill method, mine afterwards filling adopts the mode of subregion slicing and filling, every layer of packed height 1.5~2m, after first floor obturation is condensed, in first floor obturation, select suitable position to pile up second layer filling counterfort according to the height of goaf diverse location, carry out second step filling; According to above-mentioned form of construction work, connect top until reach goaf.The concentration of filling slurry is controlled at 63 ~ 65%, and the cement-sand ratio of bottom, goaf 5m height is 1:4, and top cement-sand ratio adopts 1:6.More than obturation 28d intensity reaches 2.5Mpa.
Advantage of the present invention is:
1) production safety, has good operating condition and environment.
2) the inventive method simple, adopt that accurate engineering quantity is little, the back production time is short, flexibility is large, in rooming process, the ore persisting often moves, and has been part supporting role to country rock, is conducive to underground pressure management.
3) production capacity is large, and efficiency is high, and mining cost is low.
4) depletion loss rate is low.
5) can effectively safeguard country rock, that reduces country rock moves and prevents a large amount of inbreaks.
6) protection earth's surface build, structure, control surface subsidence.
Detailed description of the invention
A kind of shallow-hole shrinkage afterwards filling mining methods, comprise the following steps:
(1), stope is arranged:
According to the firm situation of ore deposit rock, determine that single stope top board exposed area is at 1000m 2below, be multiple nuggets by ore body division, the structural parameters of each nugget are: nugget length 65m, the high 4m of fore-set, funnel 2.6 × 2.6m; Described nugget arranges along orebody trend, and nugget length, for wearing arteries and veins spacing, is arranged stope number according to nugget length, and stope arranges along orebody trend, and single length of stope is 50m, and width is orebody thickness, and fore-set 4m stays 10m studding between stope and stope;
(2), adopt accurate cutting:
Arrange arteries and veins transport lane, upper and lower rim along orebody trend, between upper lower burrs transport lane, arrange Chuan Mai lane, the distance of wearing between arteries and veins is 150m, and Chuan Mai lane is arranged in studding; Between Chuan Mai lane, ore body lower wall arranges ore removal connection lane, arranges dress ore deposit route by connection lane, then arranges the moat ditch gallery that undercuts, Qian Gou lane specifications section is 4.0 × 4.0m, at moat ditch heading, funnel makees in portion, specification is 2.6 × 2.6m, each funnel area of draw 40~50m 2; Back production is carried out in the utilization tunnel that undercuts; In studding, arrange return air raise, by connection lane and stope UNICOM, as stope ventilation, the kiloton of nugget is adopted and is cut than being: 6.56m/kt;
(3), actual mining:
(a), driling explosion: adopt YT-28 type hammer drill to carry out rock drilling, blast hole depth is 1.8m, blasthole diameter 38 ~ 40mm, shallow blasting adopts emulsion, manual charging, segmentation short-delay blasting, nonel tube detonates, second-time breakage is carried out in stope; Every layering ore deposit height that falls is controlled in 2.0m, for improving ore drawing efficiency, under drawhole, vibration ore dumping machine is installed, and to improve Ore flowability, improves drawhole handling capacity, reduces secondary breakage;
(b), stope ventilation: make freshly distinguished and admirablely entering stope work plane by transporting wear long arteries and veins lane, ore removal lane, vent (-escape) raise, lane along the pulse, dirty wind, through stope opposite side vent (-escape) raise, enters tailgate, discharges earth's surface through returnairshaft;
(c), ore removal: the ore that explosion is got off, be transported to this horizontal mine chute by scraper by extracting drift and lower wall transport lane, slip to next level stage transport lane, through locomotive haulage mine car, deliver to the system of slipping brokenly, be promoted to earth's surface;
(d), filling: adopt primary filling after ore drawing in stope, mineral building adopts all-tailing cemented filling, and the concentration of filling slurry is controlled at 63 ~ 65%, and the cement-sand ratio of bottom, goaf 5m height is 1:4, and top cement-sand ratio adopts 1:6;
(e), ore pillar reclaims: nugget curtain wall is after stage casing back production finishes, when reaching 2.5Mpa, strength of filling mass adopt the upward horizontal slice method of mining by the way of filling to carry out back production when above, stope both sides can retain the retaining wall ore pillar of 2 ~ 3m, prevent that Non cemented filling body from entering stope, to ensure pillar recovery safety;
(f), process in goaf: dead zone, goaf is processed and adopted afterwards tailing fill method, mine afterwards filling adopts the mode of subregion slicing and filling, every layer of packed height 1.5~2m, after first floor obturation is condensed, in first floor obturation, select suitable position to pile up second layer filling counterfort according to the height of goaf diverse location, carry out second step filling; According to above-mentioned form of construction work, connect top until reach goaf.The concentration of filling slurry is controlled at 63 ~ 65%, and the cement-sand ratio of bottom, goaf 5m height is 1:4, and top cement-sand ratio adopts 1:6.More than obturation 28d intensity reaches 2.5Mpa.

Claims (1)

1. shallow-hole shrinkage afterwards filling mining methods, is characterized in that: comprise the following steps:
(1), stope is arranged:
According to the firm situation of ore deposit rock, determine that single stope top board exposed area is at 1000m 2below, be multiple nuggets by ore body division, the structural parameters of each nugget are: nugget length 65m, the high 4m of fore-set, funnel 2.6 × 2.6m; Described nugget arranges along orebody trend, and nugget length, for wearing arteries and veins spacing, is arranged stope number according to nugget length, and stope arranges along orebody trend, and single length of stope is 50m, and width is orebody thickness, and fore-set 4m stays 10m studding between stope and stope;
(2), adopt accurate cutting:
Arrange arteries and veins transport lane, upper and lower rim along orebody trend, between upper lower burrs transport lane, arrange Chuan Mai lane, the distance of wearing between arteries and veins is 150m, and Chuan Mai lane is arranged in studding; Between Chuan Mai lane, ore body lower wall arranges ore removal connection lane, arranges dress ore deposit route by connection lane, then arranges the moat ditch gallery that undercuts, Qian Gou lane specifications section is 4.0 × 4.0m, at moat ditch heading, funnel makees in portion, specification is 2.6 × 2.6m, each funnel area of draw 40~50m 2; Back production is carried out in the utilization tunnel that undercuts; In studding, arrange return air raise, by connection lane and stope UNICOM, as stope ventilation, the kiloton of nugget is adopted and is cut than being: 6.56m/kt;
(3), actual mining:
(a), driling explosion: adopt YT-28 type hammer drill to carry out rock drilling, blast hole depth is 1.8m, blasthole diameter 38 ~ 40mm, shallow blasting adopts emulsion, manual charging, segmentation short-delay blasting, nonel tube detonates, second-time breakage is carried out in stope; Every layering ore deposit height that falls is controlled in 2.0m, for improving ore drawing efficiency, under drawhole, vibration ore dumping machine is installed, and to improve Ore flowability, improves drawhole handling capacity, reduces secondary breakage;
(b), stope ventilation: make freshly distinguished and admirablely entering stope work plane by transporting wear long arteries and veins lane, ore removal lane, vent (-escape) raise, lane along the pulse, dirty wind, through stope opposite side vent (-escape) raise, enters tailgate, discharges earth's surface through returnairshaft;
(c), ore removal: the ore that explosion is got off, be transported to this horizontal mine chute by scraper by extracting drift and lower wall transport lane, slip to next level stage transport lane, through locomotive haulage mine car, deliver to the system of slipping brokenly, be promoted to earth's surface;
(d), filling: adopt primary filling after ore drawing in stope, mineral building adopts all-tailing cemented filling, and the concentration of filling slurry is controlled at 63 ~ 65%, and the cement-sand ratio of bottom, goaf 5m height is 1:4, and top cement-sand ratio adopts 1:6;
(e), ore pillar reclaims: nugget curtain wall is after stage casing back production finishes, when reaching 2.5Mpa, strength of filling mass adopt the upward horizontal slice method of mining by the way of filling to carry out back production when above, stope both sides can retain the retaining wall ore pillar of 2 ~ 3m, prevent that Non cemented filling body from entering stope, to ensure pillar recovery safety;
(f), process in goaf: dead zone, goaf is processed and adopted afterwards tailing fill method, mine afterwards filling adopts the mode of subregion slicing and filling, every layer of packed height 1.5~2m, after first floor obturation is condensed, in first floor obturation, select suitable position to pile up second layer filling counterfort according to the height of goaf diverse location, carry out second step filling; According to above-mentioned form of construction work, connect top until reach goaf; The concentration of filling slurry is controlled at 63 ~ 65%, and the cement-sand ratio of bottom, goaf 5m height is 1:4, and top cement-sand ratio adopts 1:6; More than obturation 28d intensity reaches 2.5Mpa.
CN201410159792.7A 2014-04-21 2014-04-21 A kind of shallow-hole shrinkage afterwards filling mining methods Active CN103967494B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410159792.7A CN103967494B (en) 2014-04-21 2014-04-21 A kind of shallow-hole shrinkage afterwards filling mining methods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410159792.7A CN103967494B (en) 2014-04-21 2014-04-21 A kind of shallow-hole shrinkage afterwards filling mining methods

Publications (2)

Publication Number Publication Date
CN103967494A true CN103967494A (en) 2014-08-06
CN103967494B CN103967494B (en) 2016-05-04

Family

ID=51237452

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410159792.7A Active CN103967494B (en) 2014-04-21 2014-04-21 A kind of shallow-hole shrinkage afterwards filling mining methods

Country Status (1)

Country Link
CN (1) CN103967494B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104343454A (en) * 2014-09-05 2015-02-11 昆明冶金研究院 Mechanical point-column type chamber and pillar method
CN104989408A (en) * 2015-07-14 2015-10-21 三峡大学 Safe and high-efficiency mining method for metal mine in mountainous area
CN105041314A (en) * 2015-06-13 2015-11-11 招金矿业股份有限公司大尹格庄金矿 Method for united mining of deep subsequent stoping chamber and layered stoping jamb
CN105240017A (en) * 2015-11-23 2016-01-13 武汉理工大学 Block-shaped cutting, jacking and pushing ore removal mining method of double-layer extreme-thin jade mine
CN105736009A (en) * 2016-02-04 2016-07-06 武汉科技大学 Shrinkage heap leaching subsequent filling mining method used for steeply-inclined thin orebody
CN105756679A (en) * 2016-04-01 2016-07-13 江西稀有稀土金属钨业集团有限公司 Slow-to-fast comprehensive shallow hole mining method for ultra-thin complex quartz vein
CN108547618A (en) * 2018-04-04 2018-09-18 长沙有色冶金设计研究院有限公司 A kind of two steps mining methods leave the recovery process of studding
CN109026113A (en) * 2018-08-01 2018-12-18 长沙矿山研究院有限责任公司 A method of using goaf as the total returnairshaft in mine
CN109236295A (en) * 2018-11-14 2019-01-18 中南大学 A kind of three step stoping methods suitable for Deep Thick large ore deposit
CN111042818A (en) * 2019-12-27 2020-04-21 赣州有色冶金研究所 Mining method of tungsten ore body with unstable surrounding rock and steeply inclined thin ore vein
CN111749695A (en) * 2020-06-28 2020-10-09 玉溪大红山矿业有限公司 Safe and efficient shallow hole room-pillar mining method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2229747A (en) * 1989-02-24 1990-10-03 Colin John Macleod A mining method
CN101725348A (en) * 2008-10-21 2010-06-09 招金矿业股份有限公司大尹格庄金矿 Pre-control roof open stoping spallation subsequent filling mining method
CN101881169A (en) * 2010-06-25 2010-11-10 东北大学 Sublevel shrinkage caving stage open stope afterwards filling mining method
CN102587916A (en) * 2012-02-01 2012-07-18 金建工程设计有限公司 Method for filling and mining after ore caving
CN102678121A (en) * 2012-05-21 2012-09-19 山东黄金矿业(莱州)有限公司三山岛金矿 Layered top-controlling filling mining method for residual ores in deep hole in diskless area
CN103032070A (en) * 2011-10-09 2013-04-10 彭康 Boundary-controlled room column type sublevel open stoping subsequent stage filling mining method
CN203452793U (en) * 2013-07-10 2014-02-26 济南钢城矿业有限公司 Room structure of shallow-hole shrinkage mining method for mining near-surface thick, large and more oblique ore body

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2229747A (en) * 1989-02-24 1990-10-03 Colin John Macleod A mining method
CN101725348A (en) * 2008-10-21 2010-06-09 招金矿业股份有限公司大尹格庄金矿 Pre-control roof open stoping spallation subsequent filling mining method
CN101881169A (en) * 2010-06-25 2010-11-10 东北大学 Sublevel shrinkage caving stage open stope afterwards filling mining method
CN103032070A (en) * 2011-10-09 2013-04-10 彭康 Boundary-controlled room column type sublevel open stoping subsequent stage filling mining method
CN102587916A (en) * 2012-02-01 2012-07-18 金建工程设计有限公司 Method for filling and mining after ore caving
CN102678121A (en) * 2012-05-21 2012-09-19 山东黄金矿业(莱州)有限公司三山岛金矿 Layered top-controlling filling mining method for residual ores in deep hole in diskless area
CN203452793U (en) * 2013-07-10 2014-02-26 济南钢城矿业有限公司 Room structure of shallow-hole shrinkage mining method for mining near-surface thick, large and more oblique ore body

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104343454B (en) * 2014-09-05 2016-05-18 昆明冶金研究院 A kind of mechanization point pillar house column mining method
CN104343454A (en) * 2014-09-05 2015-02-11 昆明冶金研究院 Mechanical point-column type chamber and pillar method
CN105041314A (en) * 2015-06-13 2015-11-11 招金矿业股份有限公司大尹格庄金矿 Method for united mining of deep subsequent stoping chamber and layered stoping jamb
CN104989408A (en) * 2015-07-14 2015-10-21 三峡大学 Safe and high-efficiency mining method for metal mine in mountainous area
CN105240017B (en) * 2015-11-23 2019-03-08 武汉理工大学 A kind of very thin jade nugget shape cutting pushing tow ore removal mining methods of bilayer
CN105240017A (en) * 2015-11-23 2016-01-13 武汉理工大学 Block-shaped cutting, jacking and pushing ore removal mining method of double-layer extreme-thin jade mine
CN105736009A (en) * 2016-02-04 2016-07-06 武汉科技大学 Shrinkage heap leaching subsequent filling mining method used for steeply-inclined thin orebody
CN105736009B (en) * 2016-02-04 2017-12-15 武汉科技大学 Shrink dump leaching afterwards filling mining methods for Steeply dipping narrow deposits
CN105756679A (en) * 2016-04-01 2016-07-13 江西稀有稀土金属钨业集团有限公司 Slow-to-fast comprehensive shallow hole mining method for ultra-thin complex quartz vein
CN108547618A (en) * 2018-04-04 2018-09-18 长沙有色冶金设计研究院有限公司 A kind of two steps mining methods leave the recovery process of studding
CN109026113A (en) * 2018-08-01 2018-12-18 长沙矿山研究院有限责任公司 A method of using goaf as the total returnairshaft in mine
CN109026113B (en) * 2018-08-01 2020-10-30 长沙矿山研究院有限责任公司 Method for using goaf as mine total return air shaft
CN109236295A (en) * 2018-11-14 2019-01-18 中南大学 A kind of three step stoping methods suitable for Deep Thick large ore deposit
CN111042818A (en) * 2019-12-27 2020-04-21 赣州有色冶金研究所 Mining method of tungsten ore body with unstable surrounding rock and steeply inclined thin ore vein
CN111042818B (en) * 2019-12-27 2021-08-06 赣州有色冶金研究所有限公司 Mining method of tungsten ore body with unstable surrounding rock and steeply inclined thin ore vein
CN111749695A (en) * 2020-06-28 2020-10-09 玉溪大红山矿业有限公司 Safe and efficient shallow hole room-pillar mining method
CN111749695B (en) * 2020-06-28 2022-05-20 玉溪大红山矿业有限公司 Safe and efficient shallow hole room-and-pillar mining method

Also Published As

Publication number Publication date
CN103967494B (en) 2016-05-04

Similar Documents

Publication Publication Date Title
CN103967494B (en) A kind of shallow-hole shrinkage afterwards filling mining methods
CN104533416B (en) Pole big thick ore body massive mechanical non-pillar sublevel caving mining methods
CN102011589B (en) Stope bottom structure suitable for underground two-step mining and production process thereof
CN103437769B (en) Combination is reproduced structure medium-length hole ore blast and is worked in coordination with cable bolting afterwards filling mining method
CN106223958A (en) The slant middle thick orebody subregion rock drilling stage ore deposit afterwards filling that falls works in coordination with mining codes
CN106761912B (en) It is a kind of be suitable for unstable formation efficiently on to route slicing and filling mining methods
CN102182461A (en) Efficient mining method for thick metal ore body in slanting
CN103603665B (en) Upper dish side ore body stoping method in the scope of adopting of mine
CN103114855B (en) Jamb recovery and cushion layer formation integrated technology in process of mining from outdoors into underground
CN102635356A (en) Medium-length hole mining method in multiple blasting free faces of high dipping thin veins
CN105019904A (en) Mining- machine-based slowly inclined thin ore vein mechanized continuous mining method
CN104018836A (en) Divided mining method for inclined medium-thick ore body with unstable false roof
CN106640080B (en) Under a kind of deep high stress environment mining methods are arranged from steady gallery shape stope
CN105464700A (en) Method for determining length of filling segment of fully mechanized mining and filling mixed mining working face
CN102720500A (en) Mechanized underground mining method for sharply inclined thin ore body
CN109236295B (en) Three-step stoping method suitable for deep thick and large ore deposit
CN104481543A (en) Sub-level shrinkage caving method
CN105736009A (en) Shrinkage heap leaching subsequent filling mining method used for steeply-inclined thin orebody
CN103557001B (en) A kind of low section high oper cylinler shrink afterwards filling mining method
CN102635357A (en) Pillarless phased caving method with top tailing crushed stone filling and sectional water injection binding
CN104612692B (en) Formation continuous filling mining method followed by segmentation ore caving polycrystalline substance
CN104153782B (en) Progressive caving mining method
CN109899070B (en) Slow-inclination medium-thickness ore body solid-waste-free filling mining method based on ellipsoid ore drawing structure
CN104481538B (en) The processing method of interlayer in a kind of non-coal mine high-dipping multilayer ore body
CN102635358B (en) Pillar-free block caving method mining process capable of reducing waste rock interfusion amount through water injection

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant