CN107178366B - A kind of stoping method of column ore body - Google Patents
A kind of stoping method of column ore body Download PDFInfo
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- CN107178366B CN107178366B CN201710631387.4A CN201710631387A CN107178366B CN 107178366 B CN107178366 B CN 107178366B CN 201710631387 A CN201710631387 A CN 201710631387A CN 107178366 B CN107178366 B CN 107178366B
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- column
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- back production
- dead zone
- concrete
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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
Abstract
The invention discloses the stoping methods of a kind of column ore body, are divided into an individual back production region for column is put in a certain range of goaf in underground and dead zone；Manually false lane passes through back production region and sensible to sampling site column to constructing concrete in advance, and artificial vacation lane is communicated with mine main conveying system, ventilation, transport channel in forming region；Consolidated fill and top is sufficiently connect after blocking entire dead zone as inflection point using the point column in back production region；From the past horizontal rock drilling lane to sampling site column driving penetration column in artificial false lane；It constructs in rock drilling lane upper to fan shaped medium length hole, using column dead zone side as the scope of freedom and compensation space, once or column is entirely put in blasting in groups, drawing back using msdelayed light emission；Using remote-controlled scraper ore removal, mine truck transports ore, and entire exploitation process construction personnel is current and transport carries out in artificial false lane, does not enter dead zone operation.This method is highly-safe, the point column rate of recovery is high in back production region, mining efficiency is high, and technology is novel, technique is advanced.
Description
Technical field
The invention belongs to underground mining technical fields, and in particular to the stoping method of a kind of column ore body.
Background technique
The mine of open-stope mining can reserve a large amount of point column in goaf and carry out roof supporting, to ensure exploitation process
Safety, prevents big Ground pressure activity.Point column ore body quantity is more, reserves are big, grade is high, and back production value is big.With mine resources
It gradually decreases, puts column ore body as mine reserved resources, be increasingly taken seriously
But since ore pillar and goaf form complicated mechanical structure, close relation between ore pillar, back production difficulty pole
Greatly, also, the operation under old goaf, security risk are high.
Current pillar recovery mode mainly include the following types:
1, cutting a little bigger column is dot column；
2, construction concrete pillar displacement recovery point column；
3, strip filling body displacement recovery point column is filled；
4, using packed obturation " enclosing dead zone mining column " etc..
Above-mentioned several method is made a general survey of, is required to carry out stoping operation under goaf, is primarily present that security risk is big, recycling
The problems such as rate is low, mining efficiency is low, economic cost is high.Because putting column in goaf and top plate foring a complicated ground pressure system
System, in the untreated situation of goaf top plate security risk, into dead zone in stooping pillaring, security risk is very big.
Summary of the invention
The purpose of the present invention is to provide a kind of column ore body stoping methods, avoid carrying out back production under exposed goaf
Operation, it is safe and efficient.
This column ore body stoping method provided by the invention, comprising the following steps:
(1) it is divided back to exploiting field domain
Large empty area is divided into multiple small independent back production regions, each back production region includes in small dead zone and small dead zone
Point column；
(2) the artificial false lane of constructing concrete
The artificial lane Jia Xiangzhu of concrete with main transport roadway perforation is constructed in back production region, it is past from the artificial lane Jia Xiangzhu
To the artificial false lane offset of sampling site column construction；
(3) bashing
Back production region is blocked, consolidated fill goaf using barricade, and guarantees Tight filling.
(4) construction rock drilling lane
From concrete manually false lane toward tunnel the horizontal rock drilling lane for running through ore body respectively to sampling site column；
(5) back production point column
To scallop hole medium-length hole in construction in horizontal rock drilling lane, blasthole is covered with entire point column, primary using msdelayed light emission
Or column is entirely put in blasting in groups, drawing back；
(6) operating personnel operates remote-controlled scraper ore removal in concrete manually false lane, and mine truck transports ore.
Manually false lane enters stoping operation face via the concrete for operating personnel and equipment.
In a kind of embodiment of above-mentioned technical proposal, the back production region by band-like fill area, fill area outside
Point column in the dead zone and dead zone enclosed is constituted.
In a kind of embodiment of above-mentioned technical proposal, manually false lane includes main lane and offset to concrete, main lane and back production
Main lane is connected to by the main transport roadway perforation in region, offset with to sampling site column, tunnels horizontal drilling drift from offset.Concrete
Artificial vacation lane intensity must satisfy obturation pressure requirements, and heading sizes meet ventilation, people's row and transport and require.
In a kind of embodiment of above-mentioned technical proposal, back the coagulation is constructed in exploiting field domain from the intracorporal main lane of complete mine
The lane natives Gong Jia Xiang Zhu penetrates through the artificial lane Jia Xiangzhu of concrete and main transport roadway, and the branch in the artificial false lane of concrete
The connection of the lane Xiang Yuzhu provides good environment for the stoping operation of operating personnel and equipment in concrete manually false lane.
In a kind of embodiment of above-mentioned technical proposal, the barricade uses packed filling counterfort or concrete guard wall.It returns
When exploiting field domain blocks, barricade is constructed as inflection point using the point column in back production region.When constructing barricade, it is ensured that point at least one face of column
It is exposed in dead zone, in this way in subsequent explosion, makes the exposure of a column as the scope of freedom and compensation space, improve safety
Property.
Operating personnel of the invention enters column rock drilling to be dug up mine lane from artificial false lane, and upper centripetal deep hole of constructing, blasthole is covered with
Entire ore pillar；Using msdelayed light emission is primary or blasting in groups, the entire ore pillar of drawing back；Using remote-controlled scraper ore removal, mine
With truck transport ore；Entire exploitation process operating personnel operation in tunnel, does not enter operation in dead zone.
Point column in a certain range of dead zone and dead zone is divided into back by this column stoping method provided by the present invention
Exploiting field domain, shifting to an earlier date constructing concrete in back production region, manually false lane is as transport back production channel, then in stoping-and-filling region
Dead zone, finally use medium-length hole blasting back production point column, remote-controlled scraper ore removal, mine truck transport ore, operating personnel and
Via concrete, manually false lane enters stoping operation face to equipment, does not enter operation under dead zone.
Compared with existing column recovery technology, have the advantage that
1) safety greatly improves
1. carrying out subregion filling to goaf first, goaf is effectively administered, and obturation effectively reduces top plate pair
The pressure of ore pillar, Ground pressure activity are effectively controlled；
2. personnel and vehicle transport are current in concrete manually false lane, the cemented fill on artificial vacation lane top can
The effectively harm of buffering top plate Ground pressure activity；
3. a rock drilling lane of only constructing in column, does not carry out globality cutting damage, long and medium hole drilling explosion to column
Operation process is highly-safe；
4. entirely point column exploitation process, personnel do not have to enter in dead zone, and using remote-controlled scraper ore removal, operator station exists
Concrete is manually in false lane.
2) rate of recovery greatly improves
A certain number of columns are divided into a back production region, the point column in region integrally considers, selectively returns
Sampling site column reduces a column bleed waste.The column rate of recovery is put in region can reach 50% or more, using medium-length hole blasting work
Skill, 70-80% can be reached by individually putting the column rate of recovery.
3) mining efficiency greatly improves
According to sampling site pillar height degree, medium-length hole primary drilling, primary or blasting in groups entirely puts column, using remote-controlled scraper
Ore removal, truck transport ore, mining efficiency greatly improve.
4) technology is novel, technique is advanced
While dead zone obtains effectively filling improvement in back production region, the channel of mining, transport, ventilation is reserved, had both been solved
Dead zone security risk of having determined solves the problems, such as that personnel enter operation in dead zone again；Using the dead zone on the outside of column as explosion from
By face and compensation space, using medium-length hole blasting, remote-controlled scraper ore removal, mine truck transports ore, and entire technique takes into account sky
Area's filling is administered digs up mine with safety, and technology is novel, and technique is advanced.
The present invention is adapted to the back production of underground mine large area point column ore body, but require roof rock moderately stable and with
On, fill prepare during be not in top plate inbreak harm, it is preferable to sampling site column stability.Especially thick a little bigger column back production
Safety and the rate of recovery are more excellent.
Detailed description of the invention
Fig. 1 is the vertical section schematic diagram in one back production region of one embodiment of the invention.
Fig. 2 is II-II schematic cross-sectional view in Fig. 1.
Fig. 3 is III-III schematic cross-sectional view in Fig. 2.
In figure: the artificial main lane of 1-concrete；The artificial offset of 2-concrete；3-horizontal rock drilling lanes；5-obturations；6—
Small dead zone；To fan shaped medium length hole on 7-；8-transportation roadways；9-complete ore bodies；10-to sampling site column；11-sampling site columns；12—
Filling counterfort.
Specific embodiment
As shown in Figure 1 to Figure 3, this column ore body stoping method disclosed in the present embodiment, by a certain range of dead zone
It is divided into an individual back production region with the point column in dead zone, shifts to an earlier date constructing concrete manually false lane conduct in back production region
Back production channel is transported, then the dead zone in stoping-and-filling region, finally uses medium-length hole blasting back production point column.The present embodiment returns
Exploiting field domain is made of the point column in the dead zone and dead zone between two pieces of rib fill regions, fill area.
Specific step is as follows:
(1) the artificial lane Jia Xiangzhu of constructing concrete out of the main lane of complete ore body back exploiting field domain, it is manually false from concrete
The lane Xiang Zhu makes concrete vacation lane through entire back production region, shape toward respectively a concrete manually false lane offset is constructed to sampling site column
At region transport, vent passages.Guarantee that manually false lane intensity meets obturation pressure requirements to concrete, heading sizes meet logical
Wind, people's row and transport require.
(2) packed filling counterfort or concrete filling barricade are used, back production region is blocked, using consolidated fill side
Formula fills dead zone, and sufficiently connects top.Entire dead zone is filled, as inflection point, to block to sampling site column, confirmation is to sampling site when dead zone blocks
Column at least side is exposed under dead zone.
(3) from the artificial offset of each concrete toward accordingly to sampling site column driving across the horizontal rock drilling lane of entire ore pillar.
(4) to fan shaped medium length hole as blasthole on constructing in horizontal rock drilling lane, blasthole is covered with entire point column, with a column sky
Area side is the scope of freedom and compensation space, primary using msdelayed light emission or column is entirely put in blasting in groups, drawing back, and use is distant
Scraper ore removal is controlled, mine truck transports ore, and personnel station operates in artificial false lane, does not enter operation under dead zone.
Manually false lane enters stoping operation face via concrete for entire exploitation process, operating personnel and equipment, personnel not into
Enter in goaf.
Compared with existing column recovery technology, the invention has the following advantages that
1) safety greatly improves
1. carrying out subregion filling to goaf first, goaf is effectively administered, and obturation effectively reduces top plate pair
The pressure of ore pillar, Ground pressure activity are effectively controlled.2. personnel and vehicle transport are current in artificial false lane, on artificial vacation lane
The cemented fill in portion can effectively buffer the harm of top plate Ground pressure activity；3. a rock drilling lane of only constructing in ore pillar, not right
Ore pillar carries out globality cutting damage, and long and medium hole drilling bursting work process safety is high；4. entirely point column exploitation process, personnel
Without entering in dead zone, using remote-controlled scraper ore removal, operator station is in concrete manually false lane.
2) rate of recovery greatly improves
A certain number of columns are divided into a back production region, point column integrally considers in region, selective back production
Point column, reduces ore pillar loss and waste.The ore pillar rate of recovery can reach 50% or more in region, using medium-length hole blasting technique,
Individually the point column rate of recovery can reach 70-80%.
3) mining efficiency greatly improves
According to sampling site pillar height degree, medium-length hole primary drilling, primary or blasting in groups entirely puts column, using remote-controlled scraper
Ore removal, truck transport ore, mining efficiency greatly improve.
4) technology is novel, technique is advanced
While goaf obtains effectively filling improvement in region, the channel of mining, transport, ventilation is reserved, had both been solved
Goaf security risk solves the problems, such as that personnel enter operation in dead zone again；Using the dead zone on the outside of column as explosion from
By face and compensation space, using medium-length hole blasting, remote-controlled scraper ore removal, mine truck transports ore；Entire technique, takes into account and adopts
Filling mine-out area is administered digs up mine with safety, and technology is novel, and technique is advanced.
Claims (1)
1. the stoping method of a kind of column ore body, comprising the following steps:
(1) it is divided back to exploiting field domain
The large empty area that open-stope mining is formed is divided into multiple individual back production regions, each back production region include small dead zone and
Point column in small dead zone；
(2) the artificial false lane of constructing concrete
The artificial lane Jia Xiangzhu of concrete with main transport roadway perforation is constructed in back production region, from the artificial lane Jia Xiangzhu toward wait adopt
The artificial false lane offset of point column construction；
Manually false lane includes main lane and offset to concrete, and the main transport roadway in main lane and back production region penetrates through, and offset is by main lane
It is connected to sampling site column, tunnels horizontal drilling drift from offset；Manually false lane intensity must satisfy obturation pressure and wants concrete
It asks, heading sizes meet ventilation, people's row and transport and require；
(3) bashing
Back production region is blocked, consolidated fill goaf using barricade, and guarantees Tight filling；
Barricade uses packed filling counterfort or concrete guard wall, when back production region blocks, using the point column in back production region as inflection point
Construct barricade, it is ensured that column to be dug up mine at least is exposed in dead zone on one side；
(4) construction rock drilling lane
From concrete manually false lane toward tunnel the horizontal rock drilling lane for running through ore body respectively to sampling site column；
(5) back production point column
Operating personnel enters column rock drilling to be dug up mine lane from artificial false lane, to scallop hole medium-length hole in construction in horizontal rock drilling lane,
Blasthole is covered with entire point column, primary using msdelayed light emission or column is entirely put in blasting in groups, drawing back, and entire exploitation process is made
Industry personnel operation in tunnel, does not enter operation in dead zone；
(6) operating personnel operates remote-controlled scraper ore removal in concrete manually false lane, and mine truck transports ore.
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| CN109026141B (en) * | 2018-08-03 | 2021-04-02 | 长沙矿山研究院有限责任公司 | Method for reserving functional channel based on filling treatment dead zone |
| CN109594986A (en) * | 2018-10-15 | 2019-04-09 | 贵州锦丰矿业有限公司 | A kind of foam type creates medium-length hole back production explosion collocation structure and its construction method |
| CN110529179B (en) * | 2019-09-04 | 2021-01-15 | 长沙矿山研究院有限责任公司 | Anchor plate artificial false tunnel construction method |
| CN113202471B (en) * | 2021-05-10 | 2022-04-01 | 长沙矿山研究院有限责任公司 | In-situ leaching mining method for pillar ore body of underground mine |
| CN113622916B (en) * | 2021-07-12 | 2024-04-09 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Stope point column supporting and reinforcing and recycling method |
| CN113494292B (en) * | 2021-07-26 | 2022-07-05 | 长沙矿山研究院有限责任公司 | High and large point column in-situ collapse recovery method |
| CN113847029B (en) * | 2021-09-09 | 2023-12-08 | 江西省修水香炉山钨业有限责任公司 | Surrounding column extraction method for underground mine high and large point column |
| CN114856693B (en) * | 2022-04-19 | 2023-03-21 | 中南大学 | Filling and extracting method for point column ore body |
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