CN1008463B - Strip caving open stopping method and plant - Google Patents
Strip caving open stopping method and plantInfo
- Publication number
- CN1008463B CN1008463B CN 87100375 CN87100375A CN1008463B CN 1008463 B CN1008463 B CN 1008463B CN 87100375 CN87100375 CN 87100375 CN 87100375 A CN87100375 A CN 87100375A CN 1008463 B CN1008463 B CN 1008463B
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- Prior art keywords
- ore
- hill
- caving
- stoping
- back production
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a strip caving open stoping method and a plant thereof, which belongs to the field of stoping. The present invention is suitable for the underground stoping of solid ore deposits with subsidence allowed earth surface at an inclination angle below 35 degrees and a thickness of 5 to 15 meters. The present invention is characterized in that a vertical ore body is divide into ore strips in the trending direction according to certain distance; no ore columns are left in a stoping site; rock drilling and ore stoping are not in an open area; the ore is stopped from the lower end of the open area; recovery stoping is carried out step by step, and accordingly, a shovel type ore car is designed for ore stoping from the end. Due to the adoption of the stoping method, the ore has a loss rate no more than 10% and a dilution rate no more than 10%; ore stoping capability in shift can reach more than 250 tons; compared with general stoping methods, ore stoping cost is decreased by 20 to 30 %.
Description
Itemize avalanche barnyard mining methods.
The invention belongs to a kind of mining codes that are used for underground non-coal solid mine bed exploitation of field of mining.
But Soviet Union scholar A.C. boolean just husband waits " mining art " (in October, 1982 publication) of being shown, once " segmentation ore caving mining methods " were done to describe, this method is to set up the polycrystalline substance in exploiting field at district rise driving subsection gallery or ore deposit door, forms to undercut and drive grooving.During the main reserves of exploitation mineral building ore, punchinging is to carry out at subsection gallery or ore deposit door, presses vertical strip in stope, generally cuts a hole fanhole(s) from bottom to top, carries out the explosion ore caving to opening the cutting groove direction, funnel and the moat ditch constructed by the bottom; With scraper, walk haulage device or rock feeder automatically, ore along carrying the tunnel to transport to ore pass, and is covered with false top above the room cave, in order to avoid ore and top inbreak barren rock mix.It is good that this segmentation ore caving mining methods are used for exploiting the thick above ore body effect of high-dipping, but being used for the face of land allows to subside, inclination angle 35 degree is following, during the weak-walled non-coal solid mine bed underground mining of thick 5-15 rice, ore body roof, need to lay false top, the ore pillar loss is big, rate of dilution height, adopt and cut than greatly, production efficiency is not high, and safety condition is poor, the cost of winning height.
The object of the invention is to propose a kind ofly to be applicable to that the face of land allows to subside, below 35 degree of angle of slope, thickness 5-15 rice, during the weak-walled non-coal solid mine bed underground mining of ore body roof, depletion loss rate is low, adopt cut than little, job safety, cost of winning is low and strip caving open stopping method simple in structure.
The objective of the invention is to realize by following measure.
Divide the panel along orebody trend in the stage, a panel length can reach 200-300 rice.According to the mining needs, in the panel, arrange the back production simultaneously of several stopes, the wide 40-60 rice of each stope, tiltedly long 35-45 rice.Each stope at a certain distance outside the backplane arteries and veins back production go up a hill, go up a hill every several back production and to go up a hill in caving of ore body roof intermediate arrangement, each stoping space of pressing, simultaneously, caving of back production pairing several ore deposits bar of going up a hill, ore removal under the end barnyard is gone up a hill in back production, goaf, top board do not need concrete management, progressively handle with the back production caving.
Outside the arteries and veins of ore body lower wall stage casing, panel, transport gallery one side, each stope is arranged People's Bank of China's venting materials equipment courtyard, the back production connection roadway of going up a hill outside arteries and veins of ore body base plate digging again, go up a hill every the back production of 3-5 bar and to arrange that is slipped an ore deposit The Small Well, the back production digging 1-2 bar upper lower burrs cut-off in the connection roadway of going up a hill outside arteries and veins, the caving connection roadway of going up a hill is arranged along dish on the ore body again in contact ore body upper and lower dish tunnel.The requirement of (1) by formula, in connection roadway was gone up a hill in the lower wall back production, vertical orebody trend was gone up a hill every the back production ore body backplane arteries and veins outside of 6-8 rice, different according to ore value, rich or poor and mining device, determine the outer back production of the arteries and veins structural parameters of going up a hill, its design formulas is:
S＝［ 1/2 （L-b）+ (h)/(a) （ 1/(tgα) + 1/(tgβ) ）- (h)/(tgβ) ］
2·tgβ……（1）
In the formula:
The theoretical lost area of S-ore body
L-back production ore deposit bar center to center distance
The b-back production base plate of going up a hill is wide
The h-back production is gone up a hill vertical high
α-back production wall inclination angle, lane of going up a hill
β-go out rib angle
A-goes out the rib angle and plays dot factor
By the caving connection roadway of going up a hill, go up a hill every the back production of 2-3 bar in ore body roof, correspondingly arrange that a caving goes up a hill middle, according to the firm situation of ore deposit rock, caving is gone up a hill and is arranged in the arteries and veins or outside the arteries and veins.When a back production 1-2 step pitch, during the balkstone natural caving, top board can not arrange that caving goes up a hill.Stope not pillar, not segmentation, back production is punchinged also can be in caving is gone up a hill to punching with caving and is carried out; Then, form cutting groove in the back production end of going up a hill.Stope is with rock drilling apparatus of middle deep hole bringing-down ore deposit and caving big gun hole, simultaneously, caving of back production pairing 2-3 ore deposit bar of going up a hill, stoping space of onepull, a stoping space is a 3-5 rice.Press back armor rock on the step pitch elder generation explosion ore body at every turn, it is formed under the situation of the state that is a bit larger tham the ore natural repose angle, at random the explosion ore body in end and the control of adjacent ore body place; Then, ore removal under the end barnyard is gone up a hill in back production.When the slanting angle of ore body is spent less than 15, ore is transported to slide ore deposit The Small Well with scraper or other end ore removal equipment; When spending, slide ore deposit The Small Well is arrived in the ore scraping with scraper or other ore removal equipment greater than 15.When raked off in the ore deposit in electricity consumption, back production is gone up a hill connection roadway as laterally harrowing the road or establishing a directive wheel, ore is directly transported to slide ore deposit The Small Well.
The control top is an activities important in the back production, step pitch of every back production, and country rock volume under elder generation is quick-fried and accumulation shape are calculated as follows.
A caving barren rock volume design formulas
V
1＜V＜CV
1……（2）
In the formula:
V
1-caving barren rock volume
V
1-ore removal volume
A caving barren rock of C-volume factor
After the caving, stope barren rock stocking angle design formulas before the ore deposit that falls
ε
1＜ε＜Fε
1……（3）
In the formula
Barren rock stocking angle after ε-caving
ε
1-ore natural repose angle
Barren rock is piled up ascent after the F-caving
After the caving, barren rock and adjacent mines bar are piled up design formulas before the ore deposit that falls
H＝［ 1/2 （L-b） (h)/(a) （ 1/(tgα) + 1/(tgβ) ）- 1/(tgβ) ］
2·tgβ+h……（4）
ε
1＜ε＜Fε
1
In the formula
Barren rock is gone up a hill base plate to the barren rock inclined-plane from back production after the H-caving, before the ore deposit that falls
Starting point is hung down high
Other meets ditto
Whole stope operating personnel operation in the tunnel, goaf, top board do not need concrete management, progressively handle with the back production caving.
Stope ventilation: fresh distinguished and admirable through People's Bank of China ventilate, the material installation courtyard enters stope, arrives each work plane through cut-off again.The dirty wind of a part enters the goaf, and it is overflowed gradually; The dirty wind of a part is regulated with portable blower, enters standby going up a hill by connection roadway, flows into then to go up the big lane of return air, stage casing.
But the present invention and Soviet Union scholar A.C. boolean just husband wait segmentation ore caving mining codes in " mining art " (in October, 1982 version) book of being shown to compare to have stope structure simple, can reduce dilution with loss late, adopt and cut than advantage such as little, that production safety is reliable, mining device is simple, cost of winning is low.
The accompanying drawing drawing is described as follows:
Fig. 1 is a vertical view of the present invention
Fig. 2 is vertical view I of the present invention-I sectional drawing
Fig. 3 is vertical view II of the present invention-II sectional view
Symbol description among the figure: the outer back production of 1-stage casing ore body haulage way, the ventilation of 2-People's Bank of China, material installation courtyard, 3-arteries and veins goes up a hill that connection roadway, 4-slip that ore deposit The Small Well, 5-upper lower burrs cut-off, 6-caving go up a hill that connection roadway, the outer back production of 7-arteries and veins are gone up a hill, the 8-caving is gone up a hill, 9-Rabble mine winch chamber, 10-fall big gun hole, ore deposit, 11-caving big gun hole, 12-ore body, 13-ore, 14-avalanche barren rock.
The embodiment of the invention is referring to Fig. 1, Fig. 2, Fig. 3.Exploitation to be that ore is worth higher, inclination angle 8 degree, about 10 meters of thickness, the relatively poor uneasily mining orebody of upper lower burrs rock steadiness.Divide the panel into along orebody trend in the stage, a panel length can reach 200-300 rice, arranges the back production simultaneously of several stopes according to the mining needs at stope, and stope is wide 42 meters, 45 meters of slant heights.Each nugget transports gallery 1 and arranges that near ore body one side a specifications section is that 2 * 2.5 meters, high 5 meters People's Bank of China ventilate, material installation courtyard 2 outside the arteries and veins of ore body lower wall stage casing, be the back production connection roadway 3 of going up a hill outside 2.8 * 2.8 meters arteries and veins along section of ore body backplane again, go up a hill every the back production of 3-5 bar and to arrange that a section is 2 * 2 meters, high 5 meters slide ore deposit The Small Well 4, back production is gone up a hill outside arteries and veins, and two specifications sections of digging are 2.5 * 2.5 meters cut-offs 5 that pass the ore body upper lower burrs in the connection roadway, arrange caving connection roadway 6 of going up a hill along dish on the ore body again.The requirement of (1) back production outside arteries and veins is by formula gone up a hill in the connection roadway, and vertical orebody trend every 7 meters, arranges that section is 3.0 * 2.8 meters along base plate, and the outer back production of the arteries and veins of wall angle 85 degree goes up a hill 7; In connection roadway is gone up a hill in caving, along ore body roof every 14 meters in the middle of two back production are gone up a hill the corresponding section of arranging be that caving goes up a hill 8 in 3.0 * 2.8 meters the arteries and veins, outside having dug 6 arteries and veins back production go up a hill and go up a hill with each self-corresponding 3 caving and corresponding engineering after, just can the back production ore removal.According to the value of ore, theoretical loss should level off to zero, and going out rib angle β is 50 degree, draws rib angle starting point factor alpha by formula (1) and is about 7.42, determines the position and the degree of depth in big gun hole, ore deposit 10 with this.According to formula (2), a caving barren rock volume V is an ore removal volume V
11.3 times; According to formula (3), after the stope caving, barren rock stocking angle ε is ore natural repose angle ε before the ore deposit that falls
11.15 times; According to formula (4), barren rock and the back production of adjacent mines bar are gone up a hill base plate to 2.8 meters of the vertical high H=h ≈ of barren rock inclined-plane starting point after the caving, before the ore deposit that falls, and the barren rock stocking angle is the same.Be less than the useless requirement of lump according to formula (2), (3), (4) and caving barren rock lumpiness, arrange caving big gun hole 11, with rock drilling apparatus of middle deep hole bringing-down big gun hole, ore deposit 10 and caving big gun hole, each explosion two artillery salvo holes, stoping space 3-4 rice.Fall the ore deposit that will fall in a flash at caving barren rock 14, collapsing down, ore 13 usefulness scrapers are transported to slide ore deposit The Small Well.Press the foregoing description, ore loss ratio is no more than 6%, and the rate of dilution is no more than 10%, and kiloton is adopted and cut than 8 meters, and class's yield can reach 250 tons.
Claims (7)
1, a kind ofly be applicable to that the face of land allows to subside, below 35 degree of inclination angle, 5 meters to 15 meters of thickness, the itemize avalanche barnyard mining methods of the weak-walled non-coal solid mine bed underground mining of ore body roof, comprising along orebody trend and dividing the panel, the back production simultaneously of several stopes is arranged in each panel, in stope, press vertical strip, cut a hole fanhole(s) from bottom to top, carry out the explosion ore caving to the cutting groove direction, use scraper, automatically walking haulage device or rock feeder are transported to ore pass to ore along conveying volume road, it is characterized in that each stope at a certain distance outside the backplane arteries and veins back production go up a hill, go up a hill every several back production and to go up a hill in caving of ore body roof intermediate arrangement, each stoping space of pressing, the pairing several ore deposits bar of going up a hill of caving of back production simultaneously, ore removal under the end barnyard is gone up a hill in back production, the goaf, top board does not need concrete management, progressively handles with the back production caving.
2, mining methods according to claim 1, it is characterized in that vertical orebody trend every 6 to 8 meters outside ore body backplane arteries and veins back production go up a hill.
3, mining methods according to claim 1 is characterized in that going up a hill every 2 to 3 back production in ore body roof, go up a hill in caving of middle corresponding layout.
4, mining methods according to claim 3 is characterized in that according to the firm situation of ore deposit rock, caving go up a hill be arranged in the arteries and veins or arteries and veins outside.
5, mining methods according to claim 1 is characterized in that a stoping space is 3～5 meters.
6, mining methods according to claim 5, it is characterized in that at every turn by stoping space, armor rock on elder generation's explosion ore body, it is formed under the situation of the state that is a bit larger tham the ore natural repose angle in end and the control of adjacent ore body place, explosion ore body at random, then, ore removal under the end barnyard is gone up a hill in back production.
7, mining methods according to claim 1 is characterized in that the stope operating personnel carries out operation in the tunnel, and goaf, top board do not need concrete management, progressively handle with the back production caving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87100375 CN1008463B (en) | 1987-01-20 | 1987-01-20 | Strip caving open stopping method and plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87100375 CN1008463B (en) | 1987-01-20 | 1987-01-20 | Strip caving open stopping method and plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87100375A CN87100375A (en) | 1987-07-15 |
| CN1008463B true CN1008463B (en) | 1990-06-20 |
Family
ID=4812845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87100375 Expired CN1008463B (en) | 1987-01-20 | 1987-01-20 | Strip caving open stopping method and plant |
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| Country | Link |
|---|---|
| CN (1) | CN1008463B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101598031B (en) * | 2009-06-17 | 2011-09-21 | 山东黄金矿业(莱州)有限公司焦家金矿 | Mining method featuring backfilling waste rocks in situ and increasing ore recovery ratio |
| CN102003185B (en) * | 2010-11-05 | 2012-12-19 | 中蓝连海设计研究院 | Sublevel stripe tail salt stoping dry-type filling-mining method |
| CN102536241B (en) * | 2012-01-18 | 2014-06-18 | 云南文山斗南锰业股份有限公司 | Tilting ore body stoping process |
| CN102587914A (en) * | 2012-03-19 | 2012-07-18 | 河南理工大学 | Strip-type Wongawilli mining method of coal buried under building |
| CN103603665B (en) * | 2013-10-25 | 2015-08-12 | 河北省矾山磷矿有限公司 | Upper dish side ore body stoping method in the scope of adopting of mine |
| CN103590832B (en) * | 2013-11-27 | 2016-05-18 | 山东盛大矿业有限公司 | Ore pillar is isolated in advance the segmentation stick method of mining by the way of filling and is applicable to the ore body of these mining codes |
| CN104100269A (en) * | 2014-06-10 | 2014-10-15 | 湖北尧治河化工股份有限公司 | Method for improving recovery rate of thick, large and broken ore body under dangerous rock body |
| CN104847353A (en) * | 2014-11-30 | 2015-08-19 | 刘桂花 | Layered simultaneous production top coal caving coal mining method of steep dip coal seam group |
| CN108163582B (en) * | 2017-12-06 | 2020-03-31 | 长春黄金研究院 | Movable ore loading platform and ore loading method thereof |
-
1987
- 1987-01-20 CN CN 87100375 patent/CN1008463B/en not_active Expired
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| Publication number | Publication date |
|---|---|
| CN87100375A (en) | 1987-07-15 |
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