CN106284205B - Method for building dam by hydraulic flushing of tailings of mold bag edge stems - Google Patents
Method for building dam by hydraulic flushing of tailings of mold bag edge stems Download PDFInfo
- Publication number
- CN106284205B CN106284205B CN201610780269.5A CN201610780269A CN106284205B CN 106284205 B CN106284205 B CN 106284205B CN 201610780269 A CN201610780269 A CN 201610780269A CN 106284205 B CN106284205 B CN 106284205B
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- Prior art keywords
- dam
- tailings
- mould bag
- sub
- tailing
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/18—Making embankments, e.g. dikes, dams
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
Abstract
The invention discloses a method for hydraulically filling and damming tailings of side peduncles of mold bags by water, which comprises the following steps of firstly reinforcing a weak foundation on a tailing beach surface to improve the bearing capacity of the foundation under the load of a sub-dam; adopting tailing sand filling mold bags as side stems of the sub-dams to build the sub-dams in stages, wherein the stacking height of each stage is 10-15 m; filling the middle part piled up by the mould bag sub-dam into a dam body by adopting a hydraulic filling method, wherein the top width of the dam body is greater than the requirement of the minimum dry beach length of a tailing pond; and reinforcing the flow state area at the top of the dam body formed by hydraulic filling, and then adopting a mould bag sub-dam to seal the top after enough bearing capacity is achieved so as to complete the damming. The method has low requirement on the strength of the mould bag filling operation, can greatly improve the thickness of the traditional mould bag dam, simultaneously increases the dry beach length of the tailing pond, and improves the flood control capability and stability of the tailing pond.
Description
Technical field
The present invention relates to the sides that the tailings hydraulic fill that tailing equipment technical field more particularly to a kind of mould bag side are obstructed is built a dam
Method.
Background technology
Tailings Dam is a kind of special artificial construction industrial building, is generated during mining mineral resource for banking up
A large amount of barren rock, waste residue, waste water etc..As one of mine three controls engineering, Tailings Dam can normal operation, be not only related to
The economic benefit of bargh, and also affect reservoir area downstream resident's lives and properties safety and surrounding ecological environment it is steady
It is fixed.Major project of the tailing dam as Tailings Dam is a great risk source that possible lead to high potential energy mud-rock flow, and there are dam breaks
It is dangerous.Therefore it is one of the key factor for ensureing bargh and normally producing whether the stabilization of tailing dam, in particular with China
The raising of ore-dressing technique and production technology level, the taillings particle size that ore dressing generates is more and more thinner, is become using fine tailings heap dam
The a great problem of China's tailing dam construction field.
Traditional tailing dam mostly uses upstream type and builds a dam method in the prior art, the tail specifically risen by initial dam and step
Sand dam constitutes the dam body for retaining tailing, and skill of building a dam is simpler, generally builds up permeable or fluid-tight initial dam first, then
On depositing dry beach face, takes thick tailings heap in library to build the sub- dam of 1~3m of height, ore drawing branch pipe is disperseed to be placed on sub- dam to carry out
Disperse ore drawing, when tailings in library is concordant with sub- dam dam facing, then on the tailing dry beach face newly formed, by slope aspect outside design heap dam
Heap builds sub- dam to interior shifting certain distance again, while mobile ore drawing pipe continues ore drawing, so recycles, upward heap builds the sub- dam of tailings.But it should
Upstream type tailing dam especially fine grained tailing dam the shortcomings that it is more prominent, the following can be summarized as：
(1) saturation is higher in dam body, easily causes dam body to generate seepage failure or landslide, is especially easy to happen in earthquake
Liquefaction；
(2) fine tailings moisture content is high, and dewatering and coagulating is difficult, low at dam efficiency, influences mining production progress；
(3) traditional upper reaches method is limited by coarse sand content, and sub- dam dam body is relatively thin, and stability is not high.
Invention content
The object of the present invention is to provide the method that a kind of tailings hydraulic fill of mould bag side stalk is built a dam, this method mould bag charges
Operation intensity requirement is low, and can greatly improve traditional mould sack dam thickness, while increasing length of dry sand of tailings reservoir, promotes tailing
The flood control capacity and stability in library.
The method that a kind of tailings hydraulic fill of mould bag side stalk is built a dam, the method includes：
Consolidation process is carried out to the weak fault on tailing beach face, improves the foundation bearing capacity under sub- dam load；
Mould bag is charged using tailings and builds sub- dam as the side stalk on sub- dam come heap by stages, each issue of piling height is 10-15m；
By mould sack dam heap Lai middle section dam body is filled using hydraulic fill method, and the top width of the dam body is big
In Tailings Dam minimum dry beach length requirement；
The fluidised form area at the top of dam body formed to hydraulic fill carries out consolidation process, has enough bearing capacities and uses again later
It binds to complete to build a dam on mould sack dam.
The weak fault on tailing beach face carries out consolidation process, specifically includes：
It is load combined pre- using broken stone pile, Deep Mixing Method or vacuum-heap according to the concrete condition of the dam foundation on tailing beach face
Platen press carries out consolidation process.
Using tailings charge mould bag as sub- dam side obstruct come heap builds sub- dam by stages during：
Successively rise according to the sequence of interior stalk after obstructing outside each layer of elder generation, and every layer of a height of 2-5m of stalk；
The interval time that the mould bag on adjacent levels mould sack dam charges construction is true according to the consolidation situation of tailings in mould bag
It is fixed, when the bag body tailings moisture content of lower layer's mould bag is not more than 30%, then carry out charging for last layer mould bag.
Using tailings charge mould bag as sub- dam side obstruct come heap builds sub- dam by stages during：
The slopes Wai Po ratio is less than or equal to 1:3, inner slope slope ratio is less than or equal to 1:2.
The method further includes：It is reserved with overflow port on the mould sack dam of part, protection against erosion geotechnique is set on the overflow port
Cloth, in overflow tailing stream storage.
The zoned width of hydraulic fill is 50-200m；The filling speed of hydraulic fill tailing is 0.25~0.50m/d, and
The grain size of hydraulic fill tailing is less than 15% in 0.005mm granule contents below.
The method further includes：It is disposed with reinforced crushed stone pile in the dam body that hydraulic fill is formed, the broken stone pile
Bottom connection aqueduct drains into infiltration outside dam；Or vertical-horizontal direction drainage blind ditch is laid in dam body, in the french drain
Infiltration gutter outside dam is drained by aqueduct.
As seen from the above technical solution provided by the invention, above method mould bag charge operation intensity require it is low, and
Traditional mould sack dam thickness can be greatly improved, while increasing length of dry sand of tailings reservoir, promotes the flood control capacity of Tailings Dam and steady
It is qualitative.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is provided the method flow schematic diagram that the tailings hydraulic fill of mould bag side stalk is built a dam by the embodiment of the present invention；
Fig. 2 is provided the overall structure diagram built a dam by the embodiment of the present invention；
Fig. 3 is provided the structural schematic diagram of arrangement reinforced crushed stone pile by the embodiment of the present invention；
Fig. 4 is that the tailings hydraulic fill of mould bag side stalk described in the embodiment of the present invention is built a dam the structural representation after being performed integrally
Figure.
Specific implementation mode
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
The embodiment of invention, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, belongs to protection scope of the present invention.
The embodiment of the present invention is described in further detail below in conjunction with attached drawing, is implemented as shown in Figure 1 for the present invention
The method flow schematic diagram that the tailings hydraulic fill of example provided mould bag side stalk is built a dam, the method includes：
Step 11：Consolidation process is carried out to the weak fault on tailing beach face, improves the foundation bearing capacity under sub- dam load；
In this step, can be to the process of the weak fault progress consolidation process on tailing beach face：
It is load combined pre- using broken stone pile, Deep Mixing Method or vacuum-heap according to the concrete condition of the dam foundation on tailing beach face
Platen press carries out consolidation process.
In addition, before aforesaid operations, the full grading analysis of tailing granularity can also be carried out, the grain of factory's discharge tailings is selected in analysis
Degree composition, the mass percent of each grain size intervals is sieved by laser particle analyzer or vibrating screen；And experiment is charged by interior, really
The specifications parameter of cover half bagging material.
Step 12：Mould bag is charged using tailings and builds sub- dam as the side stalk on sub- dam come heap by stages, each issue of piling height is 10-
15m；
It is illustrated in figure 2 the embodiment of the present invention and the overall structure diagram built a dam is provided, mould sack dam constructs in Fig. 2
Successively rise according to the sequence of interior stalk after obstructing outside each layer of elder generation, i.e. mould sack dam 1 → mould sack dam 8 in Fig. 2, and every layer of stalk
A height of 2-5m；
In the specific implementation, the mould bag on adjacent levels mould sack dam charges the interval time of construction according to tailings in mould bag
Consolidation situation determines, when lower layer's mould bag tailings moisture content is not more than 30%, then carries out charging for last layer mould bag.
And when finally mould bag sub-dam construction is completed, the slopes Wai Po ratio is less than or equal to 1:3, inner slope slope ratio is less than or equal to 1:2.
In addition, it is also necessary to be reserved with overflow port on the mould sack dam of part, such as interior dam 2,4,6,8 in fig. 2 is reserved
Protection against erosion geotextiles are arranged on the overflow port for overflow port, in overflow tailing stream storage.
Step 13：By mould sack dam heap Lai middle section dam body, and the dam body are filled using hydraulic fill method
Top width be more than Tailings Dam minimum dry beach length requirement；
In this step, as shown in Fig. 2, the zoned width in hydraulic fill area 9 should control (along axis of dam direction) in 50-
200m；The filling speed of hydraulic fill tailing is 0.25~0.50m/d, and the grain size of hydraulic fill tailing is in 0.005mm or less
Granule content be less than 15%.
In the specific implementation, Mo Daizhugeng areas, hydraulic fill area, discharging consolidation area can be coordinated according to Tailings Dam condition
Rotate production procedure.Ore drawing supervisor is located on interior stalk, and according to the demand of sub- dam filling, obstruct set ore drawing branch pipe outside, to meet
The demand on the hydraulic fill area dams Zhu Zi；The areas Mo Daizhugeng and discharging consolidation area close ore drawing branch pipe without ore drawing simultaneously.
Step 14：To hydraulic fill formed dam body at the top of fluidised form area carry out consolidation process, have enough bearing capacities it
Mould sack dam is used to bind again afterwards to complete to build a dam.
As shown in Fig. 2, carrying out consolidation process to the fluidised form area 10 at 9 top of hydraulic fill area, has foot in the fluidised form area 10
After enough bearing capacities, mould sack dam 11 is being used to bind to complete to build a dam.
In the specific implementation, to accelerate the discharging consolidation speed of hydraulic fill tailing, while the stability of dam body is improved, in water
It can also be disposed with reinforced crushed stone pile in the dam body that power filling is formed, the provided arrangement of the embodiment of the present invention is provided
The structural schematic diagram of reinforced crushed stone pile, the reinforced crushed stone pile 12 in Fig. 3 are distributed in the dam body of hydraulic fill formation, the steel
The bottom connection aqueduct of muscle cage broken stone pile 12 drains into infiltration outside dam；Or vertical-horizontal direction can also be laid in dam body
Drainage blind ditch, the infiltration in the french drain drain into gutter outside dam by aqueduct.
The tailings hydraulic fill that mould bag side described in the embodiment of the present invention obstructs is illustrated in figure 4 to build a dam the structure after being performed integrally
Schematic diagram, in Fig. 4：After the initial dam of the bottom and treatment of soft foundation, by the mode of building a dam described in the embodiment of the present invention, sub- dam
Only stalk part in side charges mould bag using tailing, and dam body is filled in middle section using hydraulic fill method, and top uses mould sack dam
It binds；Then it is stacked to formation one by one whole.
In conclusion the method that the tailings hydraulic fill of provided mould bag of embodiment of the present invention side stalk is built a dam is with following excellent
Point：
1) sub- dam only has side stalk part and using tailing charges mould bag, overcomes traditional mould sack dam and charges big scarce of workload
Point, improves speed of building a dam；
2) length of dry sand of tailings reservoir and saturation elevation can be controlled by adjusting the width on sub- dam, improves dam stability
And flood control capacity；
3) tailing heap is charged using mould bag and builds side stalk, it is low that fine tailings discharging consolidation difficulty, efficiency of building a dam can be solved
Problem obstructs alternative materials without other sides are found, thus cost is relatively low.
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. the method that a kind of tailings hydraulic fill of mould bag side stalk is built a dam, which is characterized in that the method includes：
Consolidation process is carried out to the weak fault on tailing beach face, improves the foundation bearing capacity under sub- dam load；
Mould bag is charged using tailings and builds sub- dam as the side stalk on sub- dam come heap by stages, each issue of piling height is 10-15m；
By mould sack dam heap Lai middle section dam body is filled using hydraulic fill method, and the top width of the dam body is more than tail
Mine library minimum dry beach length requirement；
The fluidised form area at the top of dam body formed to hydraulic fill carries out consolidation process, has enough bearing capacities and uses mould bag again later
It binds to complete to build a dam on sub- dam；
Wherein, using tailings charge mould bag as sub- dam side obstruct come heap builds sub- dam by stages during：
Successively rise according to the sequence of interior stalk after obstructing outside each layer of elder generation, and every layer of a height of 2-5m of stalk；
The mould bag on adjacent levels mould sack dam charges interval time of construction and is determined according to the consolidation situation of tailings in mould bag, when
When lower layer's mould bag tailings moisture content is not more than 30%, then carry out charging for last layer mould bag；
And the slopes Wai Po ratio is less than or equal to 1:3, inner slope slope ratio is less than or equal to 1:2.
2. the method that the tailings hydraulic fill of mould bag side stalk is built a dam according to claim 1, which is characterized in that described to tailing
Weak fault on beach face carries out consolidation process, specifically includes：
Broken stone pile, Deep Mixing Method or vacuum-heaped united pre-compressed method are used according to the concrete condition of the dam foundation on tailing beach face
Carry out consolidation process.
3. the method that the tailings hydraulic fill of mould bag side stalk is built a dam according to claim 1, which is characterized in that the method is also
Including：
It is reserved with overflow port on the mould sack dam of part, protection against erosion geotextiles are set on the overflow port, is flowed into for overflow tailing
In library.
4. the method that the tailings hydraulic fill of mould bag side stalk is built a dam according to claim 1, which is characterized in that
The zoned width of hydraulic fill is 50-200m；The filling speed of hydraulic fill tailing is 0.25~0.50m/d, and waterpower
The grain size of filling tailing is less than 15% in 0.005mm granule contents below.
5. the method that the tailings hydraulic fill of mould bag side stalk is built a dam according to claim 1, which is characterized in that the method is also
Including：
Reinforced crushed stone pile is disposed in the dam body that hydraulic fill is formed, the bottom connection aqueduct of the broken stone pile will seep water
It drains into outside dam；Or vertical-horizontal direction drainage blind ditch is laid in dam body, the infiltration in the french drain is drained by aqueduct
Gutter outside dam.
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| CN201610780269.5A CN106284205B (en) | 2016-08-30 | 2016-08-30 | Method for building dam by hydraulic flushing of tailings of mold bag edge stems |
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| CN201610780269.5A CN106284205B (en) | 2016-08-30 | 2016-08-30 | Method for building dam by hydraulic flushing of tailings of mold bag edge stems |
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| CN106284205B true CN106284205B (en) | 2018-10-16 |
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| CN106709211B (en) * | 2017-01-24 | 2020-05-19 | 江苏昌泰建设工程有限公司 | Method for filling stope pillar by using tailing sand mold bag wall under mine |
| CN108457280B (en) * | 2018-03-07 | 2020-01-17 | 中钢集团马鞍山矿山研究院有限公司 | Novel method for piling up artificial dry beach of tailing pond by using cyclone in alpine region |
| CN108360467B (en) * | 2018-03-07 | 2020-01-17 | 中钢集团马鞍山矿山研究院有限公司 | Novel process for piling artificial dry beach of tailing pond in alpine region |
| CN112030888A (en) * | 2020-09-03 | 2020-12-04 | 铜源国际工程设计研究有限公司 | Fine particle tailing upstream type high-strength reinforced wide-top damming method and structure |
| CN112252273B (en) * | 2020-10-28 | 2021-12-21 | 中国有色金属工业西安勘察设计研究院有限公司 | Method for preventing and treating tailing sand leakage in tailing pond dam body |
| CN112575746A (en) * | 2020-12-28 | 2021-03-30 | 金川集团股份有限公司 | Ore drawing method for improving stability of dam body |
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| KR910003746B1 (en) * | 1987-09-28 | 1991-06-10 | 주식회사 금토개발 | Concrete construction method for underground serial wall |
| CN103924576B (en) * | 2013-01-15 | 2016-12-28 | 中冶集团武汉勘察研究院有限公司 | A kind of fine tailings reinforcement fill dam Based Intelligent Control solid row oozes vacuum method |
| CN104846779A (en) * | 2015-05-22 | 2015-08-19 | 辽宁工程技术大学 | Method for heaping up waterproof tailings pond dam |
| CN104912087B (en) * | 2015-06-12 | 2016-09-21 | 北京矿冶研究总院 | Center line type tailing damming method applying mold bags |
| CN205475261U (en) * | 2016-04-01 | 2016-08-17 | 四川电力设计咨询有限责任公司 | Ash dam structure of power plant |
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