CN108286456A - Open stope afterwards filling tunneling boring flexibility dewatering method under metalliferous mine - Google Patents
Open stope afterwards filling tunneling boring flexibility dewatering method under metalliferous mine Download PDFInfo
- Publication number
- CN108286456A CN108286456A CN201810284381.9A CN201810284381A CN108286456A CN 108286456 A CN108286456 A CN 108286456A CN 201810284381 A CN201810284381 A CN 201810284381A CN 108286456 A CN108286456 A CN 108286456A
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- Prior art keywords
- tunneling boring
- barnyard
- dehydrating tube
- filling
- method under
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- 230000005641 tunneling Effects 0.000 title claims abstract description 48
- 238000011049 filling Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000004744 fabric Substances 0.000 claims abstract description 16
- 239000010410 layer Substances 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 239000011241 protective layer Substances 0.000 claims abstract description 6
- 229920005594 polymer fiber Polymers 0.000 claims abstract description 5
- 229910000639 Spring steel Inorganic materials 0.000 claims abstract description 4
- 239000004746 geotextile Substances 0.000 claims abstract description 4
- 230000035699 permeability Effects 0.000 claims abstract description 4
- 239000003755 preservative agent Substances 0.000 claims abstract description 4
- 230000002335 preservative effect Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 9
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 abstract description 16
- 238000006297 dehydration reaction Methods 0.000 abstract description 16
- 239000002002 slurry Substances 0.000 abstract description 10
- 239000004927 clay Substances 0.000 abstract description 5
- 238000005065 mining Methods 0.000 abstract description 4
- 238000012856 packing Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 238000010276 construction Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses open stope afterwards filling tunneling boring flexibility dewatering methods under a kind of metalliferous mine, the tunneling boring dehydrating tube of appropriate length is selected according to barnyard height, it transfers to barnyard bottom, and is fixed on the barricade of barnyard bottom from barnyard top, tunneling boring dehydrating tube top is fixed on anchor pole；The structure of tunneling boring dehydrating tube includes skeleton, and pervious bed, filter layer, coating are wrapped up successively outside skeleton.Skeleton is the spring steel wire coil through preservative treatment and overcoating protective layer.Filter layer uses permeability geotextile, coating to use polymer fiber braided fabric.The dehydrating tube can effectively improve dehydration efficiency, reduce clay content, reduces packing job circulation time, reduce worker's amount of labour, meanwhile, filling slurry concentration also can be improved, and then improve strength of filling mass, ensures the safety of periphery stope mining.
Description
Technical field
The present invention relates to open stope afterwards filling tunneling boring flexibility dewatering methods under a kind of metalliferous mine.
Background technology
Traditional openstope method forms a large amount of goafs, cause subsidence, mountain body cracking or cave in, stope is caving
Etc. disasters.Continuous improvement with country to the safe and environment-friendly requirement of mining, metallic ore open stope afterwards filling mining method obtain
It is more and more widely used.Metallic ore stope filling refers to by one or more filling aggregates such as tailing or other aggregates, gelling
Material, water etc. are mixed in agitating device, and uniform stirring, at filling slurry, filling slurry is conveyed by self-flowing pastefill or pump pressure
To underground stope to be filled.Due in filling slurry contain a large amount of water, if being discharged not in time, can not only make filling counterfort bear compared with
Big pressure easily causes the safety accidents such as running pulp, and influences the raising of filling slurry concentration, and then influences strength of filling mass,
Security risk is brought for the back production of adjacent stope.Therefore metal mine afterwards filling stope fast dewatering is particularly important.
In the prior art, metallic ore afterwards filling stope generally uses the dewatering type of the geotechnological filter cloth of bellows package,
Construction technology is：First staff with hand drill along bellows radial direction Drilling circular hole, one week about 5~6, interlock cloth between axial direction
It sets, is in plum blossom-shaped, drill hole density can be selected according to actual conditions.It is connected with special pipe clamp between every two bellowss and use is definitely solid
It is fixed, until being connected to appropriate length, 2~3 layers of geotechnological filter cloth then are wrapped up on bellows surface layer, for obstructing in filling slurry
Aggregate, cementitious material exudation.Meanwhile running through bellows interior with iron wire, for reinforcing bellows, prevent from taking off during use
It falls.The bellows processed is transferred into Bottom of Stope barricade position at the top of stope, dehydrating tube upper end is fixed on country rock with anchor pole
On, lower end is fixed on barricade.Water in stope is flow to by bellows outside barricade.
The shortcomings that prior art：
1) complicated construction technique not only needs manually to drill, it is also necessary to which the additional geotechnological filter cloth of package, artificial intensity are big；
2) discharge area is small, and dehydration efficiency is low, since bellows can only reach the drilling of corresponding height in the water in stope
When, it just has water and secretes, not only slow down stope filling work cycle speed, but also the water of stope storage directly affects filling glue
Tie obturation hydration reaction and gain in strength；
3) dehydration clay content is big, is punched on bellows using hand drill, and aperture is generally in 5~10mm, the soil of outside package
Work filter cloth aperture is relatively large, has more shale particle discharge, a large amount of cementitious materials is caused to be oozed out with it, cementitious material
Outer row will certainly cause cemented fill strength reduction.
4) when stope height is larger, need the bellows connected more, weight is big, and hardness is high, is easy in junction, turning
Place's fracture is lost in or is blocked so as to cause filling slurry dehydrating tube, causes stope that can not be dehydrated.
Invention content
The object of the present invention is to provide open stope afterwards filling tunneling boring flexibility dewatering methods under a kind of metalliferous mine.
The purpose of the present invention is what is be achieved through the following technical solutions：
Open stope afterwards filling tunneling boring flexibility dewatering method under the metalliferous mine of the present invention, it is suitable to be selected according to barnyard height
The tunneling boring dehydrating tube of length is transferred to barnyard bottom from barnyard top, and is fixed on the barricade of barnyard bottom, and tunneling boring is de-
Water pipe top is fixed on anchor pole；
The structure of the tunneling boring dehydrating tube includes skeleton, and package pervious bed, filter layer, coating is followed successively by outside the skeleton
Layer.
As seen from the above technical solution provided by the invention, barnyard heir under metalliferous mine provided in an embodiment of the present invention
Tunneling boring flexibility dewatering method is filled afterwards, due to using tunneling boring dehydrating tube, utilizes " capillary " phenomenon and " siphon " principle, the whole body
Tunneling boring is permeable, integrates water suction, permeable, draining, pressure-resistant, the permeable and reverse filter effect with engineering design requirements.And have
Have water permeable area is big, compression strength is high, be laid with require the advantages such as low, portable construction is durable, and overall cost is low.Not because geology,
It manages temperature change and is broken, and can reach the effect of discharge clean water, secondary pollution will not be caused to environment, belongs to novel
Environment-friendly products.Its easy construction, non junction, to geology, landform without particular/special requirement.
Description of the drawings
Fig. 1 is the end structure illustration of tunneling boring dehydrating tube in the embodiment of the present invention.
Fig. 2 is the side structure schematic diagram of tunneling boring dehydrating tube in the embodiment of the present invention.
In figure：
1, skeleton, 2, pervious bed, 3, coating, 4, filter layer.
Specific implementation mode
The embodiment of the present invention will be described in further detail below.What is be not described in detail in the embodiment of the present invention is interior
Appearance belongs to the prior art well known to professional and technical personnel in the field.
Open stope afterwards filling tunneling boring flexibility dewatering method under the metalliferous mine of the present invention, preferable specific implementation mode
It is：
The tunneling boring dehydrating tube that appropriate length is selected according to barnyard height, is transferred from barnyard top to barnyard bottom, and solid
It is scheduled on the barricade of barnyard bottom, tunneling boring dehydrating tube top is fixed on anchor pole；
The structure of the tunneling boring dehydrating tube includes skeleton, wraps up pervious bed, filter layer, coating outside the skeleton successively
Layer.
The skeleton is the spring steel wire coil through preservative treatment and overcoating protective layer.
The protective layer uses pvc material.
The filter layer uses permeability geotextile, the coating to use polymer fiber braided fabric.
It is 125 μm that the filter layer, which uses non-woven fabrics, aperture,.
Open stope afterwards filling tunneling boring flexibility dewatering method under the metalliferous mine of the present invention, improves dehydration efficiency, and reduction contains
Mud amount reduces packing job circulation time, reduces worker's amount of labour, meanwhile, filling slurry concentration can be improved, and then improve filling
Body intensity ensures the safety of periphery stope mining.It solves current metal mine afterwards filling stope bellows dehydration to exist
Discharge area is small, the drawbacks such as dehydration efficiency is low, clay content is big, connection is inconvenient, construction is complicated, labor intensity is big.
The present invention substitutes bellows using tunneling boring dehydrating tube and carries out the work of afterwards filling dehydration in stope, tunneling boring dehydrating tube
Be it is a kind of through preservative treatment and overcoating polyvinyl chloride (PVC) or other materials make the spring steel wire coil of protective layer as skeleton, with
Permeability geotextile and polymer fiber braided fabric are compound geotechnique's synthesis tubing of tube wall lapping composition.Infiltration soil
Filter cloth is wrapped up in outside work fabric and the alternative bellows of polymer fiber braided fabric.
Tunneling boring dehydrating tube utilizes " capillary " phenomenon and " siphon " principle, and whole body tunneling boring is permeable, collection water suction, permeable, row
Water is integrated, pressure-resistant, the permeable and reverse filter effect with engineering design requirements.And with water permeable area is big, compression strength is high, paving
If it is required that the low, advantages such as portable construction is durable, and overall cost is low.It is not broken because of geology, geographical temperature change, and reachable
To the effect of discharge clean water, secondary pollution will not be caused to environment, belong to novel environment friendly product.Its easy construction, non junction,
To geology, landform without particular/special requirement.
Specific embodiment：
As shown in Figure 1 and Figure 2, it is the structural schematic diagram of tunneling boring dehydrating tube in embodiment.
Tunneling boring dehydrating tube construction method is：
The tunneling boring dehydrating tube that an appropriate length is selected according to barnyard height, is slowly transferred from barnyard top to barnyard bottom
Portion is fixed by the staff of barnyard bottom barricade position with hook to barricade suitable position, the ropes such as top iron wire or cloth
Rope is fixed on anchor pole.
Example 1：In certain mine -600mN8#S stopes, carry out dehydrating tube dewatering contrast test.
Top chamber is laid with a tunneling boring dehydrating tube, and right side is laid with three dehydrating tubes, wherein two, outside is tunneling boring
Dehydrating tube, intermediate one is bellows.The caliber of three dehydrating tubes is DN100, the nothing that tunneling boring dehydrating tube filter layer uses
Woven fabric aperture is 125 μm, and it is 500 μm that filter cloth is wrapped up in outside bellows.The water separation capability of two kinds of dehydrating tubes of experimental test and dehydration contain
Mud rate, test method are to be sampled every 15min, and the time used in fixed dehydrating amount is tested with stopwatch.Sample water is collected with collection bottle,
Clay content is tested after to be dried, and calculates mud containing rate, and test data is shown in Table 1.
The stage casings table 1-600m N8#S dehydration test data
Example 2：In certain mine stage casings -455m S3# stopes, carry out dehydrating tube dewatering contrast test.
Dehydrating tube is laid with and sets up tunneling boring dehydrating tube and bellows respectively, and two, left side is bellows, and right side is tunneling boring
Dehydrating tube.The caliber of three dehydrating tubes is DN100, and the non-woven fabrics aperture that tunneling boring dehydrating tube filter layer uses is 125 μm, wave
It is 500 μm that filter cloth is wrapped up in outside line pipe.The water separation capability and dehydration mud containing rate of two kinds of dehydrating tubes of experimental test, test method be every
15min is sampled, and the time used in fixed dehydrating amount is tested with stopwatch.Sample water is collected with collection bottle, clay content is tested after to be dried,
And mud containing rate is calculated, test data is shown in Table 2.
The stage casings table 2-455m S3# dehydration test data
The advantageous effect that technical solution of the present invention is brought：
Tunneling boring dehydration pipe construction is simple with respect to bellows construction technology, need not punch, need not wrap up in geotechnological filtering outside
Cloth is not required to special joint docking, and steel wire need not be utilized fixed inside dehydrating tube.
From table 1, table 2 it is found that tunneling boring dehydrating tube dehydration efficiency be the bellows dehydration efficiency of identical caliber 1.3~
5.0 times, based on 2.0~3.0 times.Illustrate that the dehydration efficiency of tunneling boring dehydrating tube significantly improves, in the material for filling same volume
When slurry, the time of draining can be shortened, to reduce the time interval filled twice, improve packing job cycle efficieny.Stope
In a large amount of water discharge, contribute to the raising of filling slurry concentration, and then strength of filling mass is improved, ensure that periphery stope
The safety of back production.
Tunneling boring dehydrating tube dehydration mud containing rate is lower, can not only reduce the secondary pollution in tunnel, but also represents stope abjection
The amount of cementitious material in water is also reduced, and is equally beneficial for the raising of strength of filling mass.
In specific implementation, antirust spring ring can not be used to support tube body, tube body is supported with other components.Key point is choosing
Select suitable tunneling boring dehydrating tube, including suitable caliber and suitable filter layer aperture.Using tunneling boring dehydrating tube in underground
It fills stope and carries out dewatering work.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (5)
1. open stope afterwards filling tunneling boring flexibility dewatering method under a kind of metalliferous mine, which is characterized in that selected according to barnyard height
The tunneling boring dehydrating tube for selecting appropriate length is transferred to barnyard bottom from barnyard top, and is fixed on the barricade of barnyard bottom, entirely
Section dehydrating tube top is fixed on anchor pole；
The structure of the tunneling boring dehydrating tube includes skeleton, wraps up pervious bed, filter layer, coating outside the skeleton successively.
2. open stope afterwards filling tunneling boring flexibility dewatering method under metalliferous mine according to claim 1, which is characterized in that
The skeleton is the spring steel wire coil through preservative treatment and overcoating protective layer.
3. open stope afterwards filling tunneling boring flexibility dewatering method under metalliferous mine according to claim 2, which is characterized in that
The protective layer uses pvc material.
4. open stope afterwards filling tunneling boring flexibility dewatering method under metalliferous mine according to claim 1, which is characterized in that
The filter layer uses permeability geotextile, the coating to use polymer fiber braided fabric.
5. open stope afterwards filling tunneling boring flexibility dewatering method under metalliferous mine according to claim 4, which is characterized in that
It is 125 μm that the filter layer, which uses non-woven fabrics, aperture,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810284381.9A CN108286456A (en) | 2018-04-02 | 2018-04-02 | Open stope afterwards filling tunneling boring flexibility dewatering method under metalliferous mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810284381.9A CN108286456A (en) | 2018-04-02 | 2018-04-02 | Open stope afterwards filling tunneling boring flexibility dewatering method under metalliferous mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108286456A true CN108286456A (en) | 2018-07-17 |
Family
ID=62834027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810284381.9A Pending CN108286456A (en) | 2018-04-02 | 2018-04-02 | Open stope afterwards filling tunneling boring flexibility dewatering method under metalliferous mine |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4059963A (en) * | 1976-08-19 | 1977-11-29 | Joy Manufacturing Company | Method of mine backfilling and material therefor |
| CN101008316A (en) * | 2007-01-31 | 2007-08-01 | 贵州开磷（集团）有限责任公司 | Phosphogypsum cementing and post-filling mining method and pulping technology thereof |
| CN103046958A (en) * | 2011-10-14 | 2013-04-17 | 赵学义 | Rapidly installed flexible portable pipeline for mine rescue and drainage |
| CN202883007U (en) * | 2012-04-17 | 2013-04-17 | 安徽理工大学 | Hole and fissure water drainage device |
| US20130192822A1 (en) * | 2010-05-26 | 2013-08-01 | Schlumberger Technology Corporation | Mine Dewatering System And Method |
| CN104005788A (en) * | 2014-06-16 | 2014-08-27 | 长沙矿山研究院有限责任公司 | Filling strainer pipe |
| CN206816297U (en) * | 2017-04-21 | 2017-12-29 | 中国矿业大学(北京) | A kind of goaf filling dewatering system |
| CN208184778U (en) * | 2018-04-02 | 2018-12-04 | 北京矿冶科技集团有限公司 | Open stope afterwards filling tunneling boring flexibility dewatering device under metalliferous mine |
-
2018
- 2018-04-02 CN CN201810284381.9A patent/CN108286456A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4059963A (en) * | 1976-08-19 | 1977-11-29 | Joy Manufacturing Company | Method of mine backfilling and material therefor |
| CN101008316A (en) * | 2007-01-31 | 2007-08-01 | 贵州开磷（集团）有限责任公司 | Phosphogypsum cementing and post-filling mining method and pulping technology thereof |
| US20130192822A1 (en) * | 2010-05-26 | 2013-08-01 | Schlumberger Technology Corporation | Mine Dewatering System And Method |
| CN103046958A (en) * | 2011-10-14 | 2013-04-17 | 赵学义 | Rapidly installed flexible portable pipeline for mine rescue and drainage |
| CN202883007U (en) * | 2012-04-17 | 2013-04-17 | 安徽理工大学 | Hole and fissure water drainage device |
| CN104005788A (en) * | 2014-06-16 | 2014-08-27 | 长沙矿山研究院有限责任公司 | Filling strainer pipe |
| CN206816297U (en) * | 2017-04-21 | 2017-12-29 | 中国矿业大学(北京) | A kind of goaf filling dewatering system |
| CN208184778U (en) * | 2018-04-02 | 2018-12-04 | 北京矿冶科技集团有限公司 | Open stope afterwards filling tunneling boring flexibility dewatering device under metalliferous mine |
Non-Patent Citations (4)
| Title |
|---|
| 侯国权;杨超;许文远;郭利杰;: "井下全尾砂高浓度胶结充填脱水管比选试验", 现代矿业, vol. 33, no. 06, pages 145 - 147 * |
| 李保健;周涌;刘允秋;翟利军;郭同晓;: "会宝岭铁矿全尾砂非胶结充填新工艺", 金属矿山, vol. 1, no. 1, pages 33 - 35 * |
| 李兴尚;许家林;黄伟强;施喜书;: "控制空场嗣后一次充填质量的技术改进", 黄金, no. 02, pages 27 - 30 * |
| 马海春;唐彤芝;潘思建;: "新型排水材料在高速公路软基处理中的应用", 西南公路, no. 04, pages 16 - 19 * |
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Application publication date: 20180717 |