CN106246185A - A kind of method of real-time increasing bottom-column-free sectional caving stoping method drawhole width - Google Patents
A kind of method of real-time increasing bottom-column-free sectional caving stoping method drawhole width Download PDFInfo
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- CN106246185A CN106246185A CN201610676174.9A CN201610676174A CN106246185A CN 106246185 A CN106246185 A CN 106246185A CN 201610676174 A CN201610676174 A CN 201610676174A CN 106246185 A CN106246185 A CN 106246185A
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- drawhole
- hole
- ore
- width
- big gun
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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
Abstract
A kind of method that the present invention relates to real-time increasing bottom-column-free sectional caving stoping method drawhole width, explosion is carried out including using fan shaped medium length hole, fan shaped medium length hole is accomplished fluently in advance, actual mining is to start from stope drift active workings one end to carry out falling ore deposit and ore drawing etc. by ore caving interval, it is characterized in that often arranging below the lateral opening position of fan shaped medium length hole, arrange the big gun hole of increasing drawhole width in stope drift active workings both sides by bottom hole pitch, the big gun hole strengthening drawhole width is accomplished fluently with fan shaped medium length hole, during one ore caving interval of back production first, while the fan shaped medium length hole of this step pitch of explosion, explosion strengthen the big gun hole of drawhole and next step away from the big gun hole strengthening drawhole, carry out ore drawing again, during back production later, the fan shaped medium length hole of this ore caving interval of explosion and next step away from the big gun hole strengthening drawhole.The present invention is simple to operate, safe and reliable, can effectively increase effective flow range of ore drawing, reduces bulk blocking, releases more qualified Ore, thus be greatly enhanced ore recovery rate.
Description
Technical field
The invention belongs to underground mining method technical field, particularly relate to a kind of non-pillar sublevel caving that strengthens in real time and dig up mine
The method of method drawhole width.
Background technology
The work such as rock drilling, ore caving and the ore removal due to sublevel caving method without sill pillar segmentation are all carried out in stope drift active workings, its
Fan shaped medium length hole is arranged and is typically carried out steel for shot using bottom hole pitch L as explosion burden, and between adjacent holes, bottom hole pitch is equal, row
Away from the most of substantially equal with bottom hole pitch.Mining methods stope structure is simple, mining rate is big, mechanization degree is high for this, cost of winning
Low, safe and reliable, especially it is widely used at metallurgical mine.
Gradually forming barren rock funnel during caved stopes ore drawing, along with the lasting releasing of Ore, barren rock funnel is continuous
Move down, when barren rock funnel bottom arrives drawhole, and barren rock can be released with Ore, reduce and release the grade of ore, reach cut-off
During grade, stop ore drawing.Left Ore mixes with rock, and a part can be released in next segmentation, and another part is the most forever
Being lost in underground for a long time, mine loss and dilution is greatly the outstanding problem of such mining codes.
Draw theory is the most ripe with ore drawing control theory.Ore drawing control theory is thought, the ore deposit that Side ore drawing is released
The position of stone its original is that an inclined ellipsoid lacks, if strengthening drawhole width, can increase effective flow range of ore drawing, subtracting
Few bulk blocking, releases more qualified Ore, thus is greatly enhanced ore recovery rate." metal mine " the 4th phase in 2004
Paper " Underground Mine of Gongchangling big cross section ore drawing parameter study " and " Chinese Mining Industry " volume 16 the 1st phase paper in 2007 " based on
The Underground Mine of Gongchangling big cross section structural parameters applied research of SLS system " the most all it is simulated experimentation.
If mine stope drift active workings width design is strengthened, disposably tunnel, mine engineering time certainly will be increased, take
Time the most also take fund, further, since increase stope drift active workings width, the most just increase ore body exposed space, the peace to tunnel
Full property has an impact, and especially when ore body stability is the best, more cannot implement.
Summary of the invention
It is an object of the invention to for present on problem, propose one strengthen bottom-column-free sectional caving stoping method in real time
The method of drawhole width.
It is an object of the invention to be realized by following technical proposals.
The method of a kind of real-time increasing bottom-column-free sectional caving stoping method drawhole width of the present invention, including using sector
Medium-length hole is concentrated with strengthening drawhole width big gun hole the most in advance with increasing drawhole width big gun hole Caved orebody, fan shaped medium length hole
Accomplish fluently.Actual mining is to start from stope drift active workings one end to carry out, by ore caving interval, fall ore deposit and ore drawing, it is characterised in that often arranging fan
The lateral opening location below of shape medium-length hole, is arranged the big gun hole of increasing drawhole width by bottom hole pitch in stope drift active workings both sides, and increasing is put
The big gun hole of mine mouth width is accomplished fluently with fan shaped medium length hole, during one ore caving interval of back production first, in the sector of this step pitch of explosion
While deep hole, strengthen the big gun hole of drawhole width and next step away from the big gun hole strengthening drawhole width, then carry out ore drawing, with
During the back production of rear ore caving interval, the fan shaped medium length hole of this ore caving interval of explosion and next step away from the big gun strengthening drawhole width
Hole.
Further, 0.8-1.2 times that the degree of depth is bottom hole pitch L of described increasing drawhole width big gun hole.
Compared with prior art, the having the advantage that of the present invention
1) present invention is compared with tradition Caving Method with Large Space, in addition to the fan-shaped ore caving medium-length hole of this ore caving interval of explosion, also by this ore caving
The also avalanche simultaneously of the stope drift active workings both sides of step pitch and next ore caving interval, makes drawhole strengthen, can effectively increase having of ore drawing
Effect flow range, reduces bulk blocking, releases more qualified Ore, thus be greatly enhanced ore recovery rate.
2) height and the width of stope drift active workings are constant, it is not necessary to disposably dug with broader size by stope drift active workings
Entering, mine engineering time is few, and local strengthens drawhole size in real time makes the exposed space in tunnel increase not quite, beneficially lane
The safety in road.
3) the small size stope drift active workings arranged for mine are also suitable, it is not necessary to again strengthen whole tunnel width.
Accompanying drawing explanation
Fig. 1 is the big gun hole schematic diagram that drawhole width is strengthened in stope drift active workings both sides of the present invention
Fig. 2 is Fig. 1 cross section A-A schematic diagram
Fig. 3 is drawhole width expansion shape and broken ore accumulation schematic diagram after an ore caving interval explosion
In figure: 1 is stope drift active workings, 2 is fan shaped medium length hole, and 2' is the lateral opening of both sides in medium-length hole, and 3 for strengthening drawhole width
Big gun hole, 4 is drawhole broken ore and cover rock, and 5 is the part of drawhole width expansion after an ore caving interval explosion.
Detailed description of the invention
Further illustrate the detailed description of the invention of the present invention below in conjunction with the accompanying drawings.
As in figure 2 it is shown, the method for a kind of real-time increasing bottom-column-free sectional caving stoping method drawhole width of the present invention, bag
Include employing fan shaped medium length hole 2 and strengthen drawhole width big gun hole 3 Caved orebody, fan shaped medium length hole 2 and increasing drawhole width big gun
Hole 3 is generally accomplished fluently in advance, and actual mining is to start from stope drift active workings 1 one end to carry out, by an ore caving interval, fall ore deposit and ore drawing, its
It is characterised by often arranging the lateral opening 2' location below of fan shaped medium length hole 2, is respectively arranged in stope drift active workings 1 both sides by bottom hole pitch L
3-4 strengthen drawhole width big gun hole 3, strengthen drawhole width big gun hole 3 with fan shaped medium length hole 2 concentrate accomplish fluently,
During first ore caving interval of back production, the fan shaped medium length hole 2 of this step pitch of explosion while, explosion strengthens the big gun hole 3 of drawhole width
With next step away from big gun hole 3, then carry out ore drawing, time later with ore caving interval back production, in the sector of this ore caving interval of explosion
Deep hole 2 and next step away from the big gun hole 3 strengthening drawhole width.After Fig. 3 is each ore caving interval explosion, drawhole width expansion
Shape and broken ore pile up schematic diagram.
0.8-1.2 times that the degree of depth is bottom hole pitch L of the big gun hole 3 of increasing drawhole width of the present invention.
The present invention can increase effective flow range of ore drawing effectively, reduces bulk blocking, releases more qualified Ore, thus
It is greatly enhanced ore recovery rate.
Claims (2)
1. a method for real-time increasing bottom-column-free sectional caving stoping method drawhole width, including use fan shaped medium length hole with
Strengthening drawhole width big gun hole Caved orebody, fan shaped medium length hole is concentrated the most in advance with increasing drawhole width big gun hole and is accomplished fluently, and returns
Adopting work is to start from stope drift active workings one end to carry out, by ore caving interval, fall ore deposit and ore drawing, it is characterised in that often arranging fan shaped medium length hole
Lateral opening location below, is arranged the big gun hole of increasing drawhole width by bottom hole pitch in stope drift active workings both sides, strengthens drawhole width
Big gun hole accomplish fluently with fan shaped medium length hole, during one ore caving interval of back production first, the fan shaped medium length hole of this step pitch of explosion same
Time, strengthen the big gun hole of drawhole width and next step away from the big gun hole strengthening drawhole width, then carry out ore drawing, later ore caving walks
Away from back production time, the fan shaped medium length hole of this ore caving interval of explosion and next step away from strengthen drawhole width big gun hole.
2., according to the method for claim 1 one kind real-time increasing bottom-column-free sectional caving stoping method drawhole width, its feature exists
In in big gun hole 0.8-1.2 times that the degree of depth is bottom hole pitch of described increasing drawhole width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610676174.9A CN106246185B (en) | 2016-08-17 | 2016-08-17 | A kind of real-time method for increasing bottom-column-free sectional caving stoping method drawhole width |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610676174.9A CN106246185B (en) | 2016-08-17 | 2016-08-17 | A kind of real-time method for increasing bottom-column-free sectional caving stoping method drawhole width |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106246185A true CN106246185A (en) | 2016-12-21 |
| CN106246185B CN106246185B (en) | 2019-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610676174.9A Active CN106246185B (en) | 2016-08-17 | 2016-08-17 | A kind of real-time method for increasing bottom-column-free sectional caving stoping method drawhole width |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137232A (en) * | 2021-05-07 | 2021-07-20 | 南华大学 | Efficient mining method based on fluid changing effect |
| CN113738369A (en) * | 2021-09-15 | 2021-12-03 | 长沙矿山研究院有限责任公司 | Efficient stoping process for sectional medium-length hole stope |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470740A (en) * | 2002-07-25 | 2004-01-28 | 宝钢集团上海梅山有限公司 | Big-interval bottom-column-free sectional caving stoping method |
| RU2405109C1 (en) * | 2009-06-19 | 2010-11-27 | Государственное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный горный институт имени Г.В. Плеханова (технический университет)" | Method of developing thick ore deposits by underground mining with interchamber pillars support |
| CN102261249A (en) * | 2011-08-15 | 2011-11-30 | 鞍钢集团矿业公司 | Creasing-type sill-pillar-free stage caving stopping method based on steel structured artificial top |
-
2016
- 2016-08-17 CN CN201610676174.9A patent/CN106246185B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470740A (en) * | 2002-07-25 | 2004-01-28 | 宝钢集团上海梅山有限公司 | Big-interval bottom-column-free sectional caving stoping method |
| RU2405109C1 (en) * | 2009-06-19 | 2010-11-27 | Государственное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный горный институт имени Г.В. Плеханова (технический университет)" | Method of developing thick ore deposits by underground mining with interchamber pillars support |
| CN102261249A (en) * | 2011-08-15 | 2011-11-30 | 鞍钢集团矿业公司 | Creasing-type sill-pillar-free stage caving stopping method based on steel structured artificial top |
Non-Patent Citations (2)
| Title |
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| 原丕业等: "急倾斜中厚矿体无底柱分段崩落法结构参数优化研究", 《中国矿业》 * |
| 高永等: "松湖铁矿矿石流动性加强措施", 《现代矿业》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137232A (en) * | 2021-05-07 | 2021-07-20 | 南华大学 | Efficient mining method based on fluid changing effect |
| CN113738369A (en) * | 2021-09-15 | 2021-12-03 | 长沙矿山研究院有限责任公司 | Efficient stoping process for sectional medium-length hole stope |
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| Publication number | Publication date |
|---|---|
| CN106246185B (en) | 2019-01-15 |
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