CN108952724A - A kind of oblique cloth hole press-down type explosion for recycling top-bottom pillar falls mine mining methods - Google Patents
A kind of oblique cloth hole press-down type explosion for recycling top-bottom pillar falls mine mining methods Download PDFInfo
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- CN108952724A CN108952724A CN201810978296.2A CN201810978296A CN108952724A CN 108952724 A CN108952724 A CN 108952724A CN 201810978296 A CN201810978296 A CN 201810978296A CN 108952724 A CN108952724 A CN 108952724A
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- Prior art keywords
- explosion
- goaf
- hole
- ore
- down type
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/22—Methods of underground mining; Layouts therefor for ores, e.g. mining placers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
Abstract
The oblique cloth hole press-down type explosion that the present invention relates to a kind of for recycling top-bottom pillar falls mine mining methods, belongs to metal mine mining technique field.Using goaf as bottom moat ditch, drilling drift is arranged in the country rock or studding of stooping pillaring two sides, the mode of rock drilling cloth blasthole is the oblique cloth hole of medium-length hole, discharging tunnel is arranged in the bottom in goaf, explosion, which is carried out, as the scope of freedom using the goaf of stooping pillaring lower part falls mine, explosion ore falling mode is that the explosion of Delay between holes press-down type falls mine, and explosion falls the ore storage ore removal way after mine using remote-controlled scraper.Advantage is: it is safe and reliable, guarantee to adopt the safe and efficient of each links such as quasi- driving, driling explosion, later period ore removal, dead zone improvement, Earth pres-sure control, improves the ore pillar rate of recovery to greatest extent, reduce security risk；It is big thoroughly to solve top pillar recovery difficult, ore loss ratio is high, and the problem of safety difference enables the safe and efficient recycling of ore, greatly improves mine economic profit.
Description
Technical field
The invention belongs to metal mine mining technique fields, and in particular to a kind of medium-length hole for recycling top-bottom pillar is oblique
Cloth hole press-down type explosion falls the mining methods of mine.
Background technique
During mine resources are exploited and utilized, due to the limitation of original mining methods, there are part top-bottom pillars can not
It recycles (being commonly called as " residual mine "), according to recent statistics as a result, the ore losses amount of top-bottom pillar accounts for the 20 of general mining geology reserves
~35%, thus caused by ore resource unnecessary loss it is larger, by the part remain ore recuperation, to increase mining economy
Benefit extends mine life, is one of the emphasis of mining technical work.The originally mode of " residual mine " recycling, mainly
It is that secondary brushing is carried out to minery, is beared down on one in the way of shallow bore hole driling explosion, this method large labor intensity, low efficiency, peace
Full property is poor, and the safety accident of a lot of remnant reclaimings has occurred in recent years；With the development of mining machinery manufacture level, safety, height
The driling explosion equipment for imitating, being applicable to complex situations achieves significant progress.In turn, new using advanced equipment research
Former mining methods are retained top-bottom pillar and carry out safe and efficient back production, recycled mine resources to the maximum extent, become by mining methods
The Important Problems of current mining technical research.
Summary of the invention
The present invention provides a kind of oblique cloth hole press-down type explosion for recycling top-bottom pillar and falls mine mining methods, to solve to push up
Column recovery difficult is big, and ore loss ratio is high, the problem of safety difference,
The technical solution adopted by the present invention is that: include the following steps:
(1) using goaf as bottom moat ditch, drilling drift is arranged in the country rock or studding of stooping pillaring two sides, is dug
Rock gangway road is connected to by connecting taxiway with other well lanes engineering, and the mode of rock drilling cloth blasthole is the oblique cloth hole of medium-length hole, passes through driving
Mode arranges that discharging tunnel, discharging tunnel are connected to goaf in the bottom in goaf；
(2) explosion is carried out as the scope of freedom using the goaf of stooping pillaring lower part and falls mine, explosion ore falling mode is Delay between holes
Press-down type explosion falls mine；
(3) explosion falls the ore storage ore removal way after mine using remote-controlled scraper.
The horizontal absolute altitude of drilling drift top plate in step (1) of the present invention is concordant with goaf top plate absolute altitude, rock drilling lane
Road is 1.5~2 meters far from goaf minimum horizontal distance L1, and goaf two sides are 1.2~1.5 with respect to the bottom hole spacing L5 of blasthole
Rice.
The spacing L4 of adjacent connecting taxiway in step (1) of the present invention is 40~60m；
The spacing L6 of adjacent discharging tunnel is 10~15m in step (1) of the present invention；
Steel for shot angle is 5 °~175 ° in step (1) of the present invention, and it is 1.2~1.6m, big gun that blasthole, which arranges spacing L3,
Hole bottom hole pitch L2 is 1.6~2.0m, and blasthole diameter is 50~70mm, and 4 depth of blasthole is 5~15m.
Blast hole projectile filling is loaded bulk explosive using pneumatic type explosive loader or directly loaded in step (2) of the present invention
Sticked explosive.
Delay between holes press-down type explosion falls mine method in step (2) of the present invention are as follows: carries out hole using elementary errors type detonator
Between elementary errors indirect initiation, Hole-hole short-delay blasting arrangement form is super close to goaf shot hole blasting using lower section goaf as the scope of freedom
It is preceding in far from goaf blasthole, and so on, 25~50 milliseconds of short-delay time, single explosion ore body span is 3~6 blastholes
Row.
0.3~0.5kg/t of explosive specific charge in step (2) of the present invention.
The invention has the advantages that method understand it is easy, safe and reliable, guarantee adopt quasi- driving, driling explosion, later period ore removal,
Each links such as dead zone improvement, Earth pres-sure control it is safe and efficient, to greatest extent improve the ore pillar rate of recovery, reduce security risk；Thoroughly
It is big to solve top pillar recovery difficult, ore loss ratio is high, and the problem of safety difference enables the safe and efficient recycling of ore, greatly
Improve mine economic profit.
Detailed description of the invention
Fig. 1 is the diagrammatic cross-section of rock drilling arrangement of the present invention；
Fig. 2 is the A-A cross-sectional view of Fig. 1；
Fig. 3 is the ore removal schematic diagram after explosion of the present invention；
Fig. 4 is the explosive broken schematic diagram of the present invention point.
Specific embodiment
Embodiment 1
Include the following steps:
(1) it regard goaf 8 as bottom moat ditch, drilling drift 5 is arranged in the country rock or studding 7 of stooping pillaring two sides
In, drilling drift 5 is connected to by connecting taxiway 6 with other well lanes engineering, for material, the transport and discrepancy of equipment, personnel, rock drilling
The mode of cloth blasthole 4 is the oblique cloth hole of medium-length hole, by tunneling method, arranges discharging tunnel 9, ore removal in the bottom in goaf 8
Tunnel 9 is connected to goaf；
It (2) is that scope of freedom progress explosion falls mine with the goaf 8 of 3 lower part of stooping pillaring, explosion ore falling mode is micro- between hole
Poor press-down type explosion falls mine；
It is big that synchronous explosion difficulty can be reduced, concussion of blasting destroys serious, the problems such as boulder yield height；Make explosion ore simultaneously
Attrition crushing occurs, lumpiness is uniform in size suitable, saves secondary blasting loss；
(3) explosion falls 1 ore removal way of ore storage after mine using remote-controlled scraper 2, to ensure operating personnel and equipment peace
Entirely, operation mode must meet the requirement of " metal and nonmetal mine safety regulation " GB16423-2006.
The horizontal absolute altitude of 5 top plate of drilling drift in step (1) of the present invention is concordant with 8 top elevation of goaf, with this
Guarantee that the inclination angle of blasthole 4 meets rock drilling requirement；At the same time, drilling drift 5 is 1.5 meters from 8 minimum horizontal distance L1 of goaf,
Guarantee driling explosion operational security with this；Goaf two sides are 1.2 meters with respect to the bottom hole spacing L5 of blasthole 4.
The spacing L4 of adjacent connecting taxiway 6 in step (1) of the present invention is 40m；
The spacing L6 of adjacent discharging tunnel 9 is 10m in step (1) of the present invention；
4 layout angle of blasthole is 5 °~175 ° in step (1) of the present invention, and it is 1.2m, blasthole hole that blasthole, which arranges spacing L3,
Bottom is 1.6m away from L2, and blasthole diameter 50mm, 4 depth of blasthole is that 5m can be adjusted accordingly according to lithology and equipment feature.
Blast hole projectile filling is loaded bulk explosive using pneumatic type explosive loader or directly loaded in step (2) of the present invention
Sticked explosive；
Delay between holes press-down type explosion falls mine method in step (2) of the present invention are as follows: carries out hole using elementary errors type detonator
Between elementary errors indirect initiation, Hole-hole short-delay blasting arrangement form is super close to goaf shot hole blasting using lower section goaf as the scope of freedom
It is preceding in far from goaf blasthole, and so on, 25 milliseconds of short-delay time, single explosion ore body span is 3 blastholes rows.
Explosive specific charge 0.3kg/t in step (2) of the present invention.
Embodiment 2
Include the following steps:
(1) it regard goaf 8 as bottom moat ditch, drilling drift 5 is arranged in the country rock or studding 7 of stooping pillaring two sides
In, drilling drift 5 is connected to by connecting taxiway 6 with other well lanes engineering, for material, the transport and discrepancy of equipment, personnel, rock drilling
The mode of cloth blasthole 4 is the oblique cloth hole of medium-length hole, by tunneling method, arranges discharging tunnel 9, ore removal in the bottom in goaf 8
Tunnel 9 is connected to goaf；
It (2) is that scope of freedom progress explosion falls mine with the goaf 8 of 3 lower part of stooping pillaring, explosion ore falling mode is micro- between hole
Poor press-down type explosion falls mine；
It is big that synchronous explosion difficulty can be reduced, concussion of blasting destroys serious, the problems such as boulder yield height；Make explosion ore simultaneously
Attrition crushing occurs, lumpiness is uniform in size suitable, saves secondary blasting loss；
(3) explosion falls 1 ore removal way of ore storage after mine using remote-controlled scraper 2, to ensure operating personnel and equipment peace
Entirely, operation mode must meet the requirement of " metal and nonmetal mine safety regulation " GB16423-2006.
The horizontal absolute altitude of 5 top plate of drilling drift in step (1) of the present invention is concordant with 8 top elevation of goaf, with this
Guarantee that the inclination angle of blasthole 4 meets rock drilling requirement；At the same time, drilling drift 5 is 1.8 meters from 8 minimum horizontal distance L1 of goaf,
Guarantee driling explosion operational security with this；Goaf two sides are 1.4 meters with respect to the bottom hole spacing L5 of blasthole 4.
The spacing L4 of adjacent connecting taxiway 6 in step (1) of the present invention is 50m；
The spacing L6 of adjacent discharging tunnel 9 is 12m in step (1) of the present invention；
4 layout angle of blasthole is 5 °~175 ° in step (1) of the present invention, and it is 1.5m, blasthole hole that blasthole, which arranges spacing L3,
Bottom is 1.8m away from L2, and blasthole diameter 60mm, 4 depth of blasthole is that 10m can be adjusted accordingly according to lithology and equipment feature；
Blast hole projectile filling is loaded bulk explosive using pneumatic type explosive loader or directly loaded in step (2) of the present invention
Sticked explosive；
Delay between holes press-down type explosion falls mine method in step (2) of the present invention are as follows: carries out hole using elementary errors type detonator
Between elementary errors indirect initiation, Hole-hole short-delay blasting arrangement form is super close to goaf shot hole blasting using lower section goaf as the scope of freedom
It is preceding in far from goaf blasthole, and so on, 35 milliseconds of short-delay time, single explosion ore body span is 4 blastholes rows.
Explosive specific charge 0.4kg/t in step (2) of the present invention.
Embodiment 3
Include the following steps:
(1) it regard goaf 8 as bottom moat ditch, drilling drift 5 is arranged in the country rock or studding 7 of stooping pillaring two sides
In, drilling drift 5 is connected to by connecting taxiway 6 with other well lanes engineering, for material, the transport and discrepancy of equipment, personnel, rock drilling
The mode of cloth blasthole 4 is the oblique cloth hole of medium-length hole, by tunneling method, arranges discharging tunnel 9, ore removal in the bottom in goaf 8
Tunnel 9 is connected to goaf；
It (2) is that scope of freedom progress explosion falls mine with the goaf 8 of 3 lower part of stooping pillaring, explosion ore falling mode is micro- between hole
Poor press-down type explosion falls mine；
It is big that synchronous explosion difficulty can be reduced, concussion of blasting destroys serious, the problems such as boulder yield height；Make explosion ore simultaneously
Attrition crushing occurs, lumpiness is uniform in size suitable, saves secondary blasting loss；
(3) explosion falls 1 ore removal way of ore storage after mine using remote-controlled scraper 2, to ensure operating personnel and equipment peace
Entirely, operation mode must meet the requirement of " metal and nonmetal mine safety regulation " GB16423-2006.
The horizontal absolute altitude of 5 top plate of drilling drift in step (1) of the present invention is concordant with 8 top elevation of goaf, with this
Guarantee that the inclination angle of blasthole 4 meets rock drilling requirement；At the same time, drilling drift 5 is 2 meters from 8 minimum horizontal distance L1 of goaf, with
This guarantees driling explosion operational security；Goaf two sides are 1.5 meters with respect to the bottom hole spacing L5 of blasthole 4.
The spacing L4 of adjacent connecting taxiway 6 in step (1) of the present invention is 60m；
The spacing L6 of adjacent discharging tunnel 9 is 15m in step (1) of the present invention；
4 layout angle of blasthole is 5 °~175 ° in step (1) of the present invention, and it is 1.6m, blasthole hole that blasthole, which arranges spacing L3,
Bottom is 2.0m away from L2, and blasthole diameter 70mm, 4 depth of blasthole is that 15m can be adjusted accordingly according to lithology and equipment feature.
Blast hole projectile filling is loaded bulk explosive using pneumatic type explosive loader or directly loaded in step (2) of the present invention
Sticked explosive；
Delay between holes press-down type explosion falls mine method in step (2) of the present invention are as follows: carries out hole using elementary errors type detonator
Between elementary errors indirect initiation, Hole-hole short-delay blasting arrangement form is super close to goaf shot hole blasting using lower section goaf as the scope of freedom
It is preceding in far from goaf blasthole, and so on, 50 milliseconds of short-delay time, single explosion ore body span is 6 blastholes rows.
Explosive specific charge 0.5kg/t in step (2) of the present invention.
Claims (8)
1. a kind of oblique cloth hole press-down type explosion for recycling top-bottom pillar falls mine mining methods, which is characterized in that including following
Step:
(1) using goaf as bottom moat ditch, drilling drift is arranged in the country rock or studding of stooping pillaring two sides, rock drilling lane
Road is connected to by connecting taxiway with other well lanes engineering, and the mode of rock drilling cloth blasthole is the oblique cloth hole of medium-length hole, by tunneling method,
Arrange that discharging tunnel, discharging tunnel are connected to goaf in the bottom in goaf；
(2) explosion is carried out as the scope of freedom using the goaf of stooping pillaring lower part and falls mine, explosion ore falling mode is Delay between holes pushing
Formula explosion falls mine；
(3) explosion falls the ore storage ore removal way after mine using remote-controlled scraper.
2. a kind of oblique cloth hole press-down type explosion for recycling top-bottom pillar according to claim 1 falls mine mining methods,
It is characterized by: the horizontal absolute altitude of drilling drift top plate in the step (1) is concordant with goaf top plate absolute altitude, drilling drift from
Goaf minimum horizontal distance L1 is 1.5~2 meters, and goaf two sides are 1.2~1.5 meters with respect to the bottom hole spacing L5 of blasthole.
3. a kind of oblique cloth hole press-down type explosion for recycling top-bottom pillar according to claim 1 falls mine mining methods,
It is characterized by: the spacing L4 of the adjacent connecting taxiway in the step (1) is 40~60m.
4. a kind of oblique cloth hole press-down type explosion for recycling top-bottom pillar according to claim 1 falls mine mining methods,
It is characterized by: the spacing L6 of adjacent discharging tunnel is 10~15m in the step (1).
5. a kind of oblique cloth hole press-down type explosion for recycling top-bottom pillar according to claim 1 falls mine mining methods,
It is characterized by: steel for shot angle is 5 °~175 ° in the step (1), it is 1.2~1.6m, blasthole hole that blasthole, which arranges spacing L3,
Bottom is 1.6~2.0m away from L2, and blasthole diameter is 50~70mm, and 4 depth of blasthole is 5~15m.
6. a kind of oblique cloth hole press-down type explosion for recycling top-bottom pillar according to claim 1 falls mine mining methods,
It is characterized by: blast hole projectile filling is loaded bulk explosive using pneumatic type explosive loader or directly loads volume in the step (2)
Blasting charge.
7. a kind of oblique cloth hole press-down type explosion for recycling top-bottom pillar according to claim 1 falls mine mining methods,
It is characterized by: Delay between holes press-down type explosion falls mine method in the step (2) are as follows: using elementary errors type detonator carry out hole between it is micro-
Poor indirect initiation, Hole-hole short-delay blasting arrangement form are ahead of using lower section goaf as the scope of freedom close to goaf shot hole blasting
Separate goaf blasthole, and so on, 25~50 milliseconds of short-delay time, single explosion ore body span is 3~6 blastholes rows.
8. a kind of oblique cloth hole press-down type explosion for recycling top-bottom pillar according to claim 7 falls mine mining methods,
It is characterized by: 0.3~0.5kg/t of explosive specific charge in the step (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810978296.2A CN108952724A (en) | 2018-08-26 | 2018-08-26 | A kind of oblique cloth hole press-down type explosion for recycling top-bottom pillar falls mine mining methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810978296.2A CN108952724A (en) | 2018-08-26 | 2018-08-26 | A kind of oblique cloth hole press-down type explosion for recycling top-bottom pillar falls mine mining methods |
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| Publication Number | Publication Date |
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| CN108952724A true CN108952724A (en) | 2018-12-07 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895566A (en) * | 2015-06-15 | 2015-09-09 | 武汉科技大学 | Mining method with residual ore recovery function |
| CN104963687A (en) * | 2015-07-09 | 2015-10-07 | 太原理工大学 | Method for recycling upper part residual coal and backfilling goaf by utilizing full-mechanized caving mining in extremely thick coal seam |
| CN105863727A (en) * | 2016-04-21 | 2016-08-17 | 西北矿冶研究院 | Method for treating pillar goaf |
| CN106089204A (en) * | 2016-08-10 | 2016-11-09 | 福建省新华都工程有限责任公司 | A kind of method that forward deep hole great explosion caving realizes remnant reclaiming |
| CN106640078A (en) * | 2015-11-03 | 2017-05-10 | 哈尔滨市永恒鑫科技开发有限公司 | Recovery method for lean ore in goaf |
-
2018
- 2018-08-26 CN CN201810978296.2A patent/CN108952724A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895566A (en) * | 2015-06-15 | 2015-09-09 | 武汉科技大学 | Mining method with residual ore recovery function |
| CN104963687A (en) * | 2015-07-09 | 2015-10-07 | 太原理工大学 | Method for recycling upper part residual coal and backfilling goaf by utilizing full-mechanized caving mining in extremely thick coal seam |
| CN106640078A (en) * | 2015-11-03 | 2017-05-10 | 哈尔滨市永恒鑫科技开发有限公司 | Recovery method for lean ore in goaf |
| CN105863727A (en) * | 2016-04-21 | 2016-08-17 | 西北矿冶研究院 | Method for treating pillar goaf |
| CN106089204A (en) * | 2016-08-10 | 2016-11-09 | 福建省新华都工程有限责任公司 | A kind of method that forward deep hole great explosion caving realizes remnant reclaiming |
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Application publication date: 20181207 |