CN103572747A

CN103572747A - Method for burying drainage-seepage body of reverse filtering pipe in tailing dam

Info

Publication number: CN103572747A
Application number: CN201310566851.8A
Authority: CN
Inventors: 付文堂
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-15
Filing date: 2013-11-15
Publication date: 2014-02-12

Abstract

The invention discloses a method for burying a drainage-seepage body of a reverse filtering pipe in a tailing dam. The method comprises the steps that buried water guide pipes are implanted to a tailing dam body from top to bottom; water collecting pipe grooves are formed in the tailing dam body parallel to a fill dam in an excavating mode and water collecting pipes are buried in the water collecting pipe grooves in a sectionalized mode; drainage-seepage pipe grooves are excavated along the natural gradient of a dry beach of a tailing pond and water seepage pipes are placed inside the drainage-seepage pipe grooves; the water seepage pipes are connected with the water collecting pipes and the water guide pipes are connected with the water collecting pipes. According to the method, the burying mode of the reverse drainage-seepage body in the dam is adopted, the height of a pre-seepage line of tailings is effectively controlled, the seepage line is prevented from rising, the stability of the dam body is guaranteed, the maintenance cost is lowered, and a large amount of later treatment cost is saved for enterprises. Meanwhile, the drainage-seepage structure is reasonable, the technology is simple, construction is convenient, the construction period is short, the cost is low, the drainage-seepage effect is good, and therefore the potential safety hazards that the tailing dam is in danger, collapses, breaks and the like are eliminated.

Description

The method for embedding of reverse chimney filter drain system in a kind of tailing dam

Technical field

The present invention relates to that industrial ore dressing plant abandons that slag or thermal power industry are piled up residual thing and in the running of the tailing dam that forms, prevent that phreatic line from rising and cause a kind of preventive action of dam break, specifically refer in a kind of tailing dam the oppositely method for embedding of chimney filter drain system.

Background technology

Tailing dam is the critical facility of all kinds of ore dressing plants of metallurgical industry, steam power station capital construction, to guarantee all kinds of ore dressing plants, the normal important step of producing in steam power station, along with the construction of all kinds of factories and miness power plant with production-scalely day by day increase, the grey quantity of slag that discharge the mine tailing amount that discharge in ore dressing plant and power plant also sharply increases, the thing followed is many to become increasingly conspicuous about tailing dam and ash dyke safety and environmental issue, being in danger of tailing dam and ash dyke, cave in, the serious accident such as dam break happens occasionally.At present newly build a dam major way that the pre-buried row of body oozes of China is the in line and water seepage drainage prism water guide of drainage pipe.Drainage pipe is in line because soakaway trench water accumulation pipe aqueduct is integrated, the seepage flow pipe gradient is contrary with the dry sand of tailings reservoir gradient, drainage pipe major part need to be set up, by tailing disposal, starch and bury drainage pipe underground, thin mine tailing in Tailings Slurry is affected by negative pressure to be adsorbed on drainage pipe filter screen, infiltration decrease in efficiency is exceedingly fast, in thinner mine tailing, rely on and improve drainage pipe diameter increase water seepage drainage effect, be far from burying underground and in drainage pipe process, add loaded filter successful, and economical and practical, soakaway trench part in direct-burried drainage pipe cannot be laid loaded filter because of built on stilts, therefore can not in thinner mine tailing, bury underground again.In water seepage drainage prism water guide, the stacking sequence of Tailings Slurry discharge is to be precipitation successively carefully in essence by grain fineness far away proximad, and the parallel fill dam of water seepage drainage prism is laid, and water seepage drainage prism is laid in thinner mine tailing, has reduced water seepage drainage prism infiltration usefulness.Improve seepage water flow and flow velocity in drain system, can prevent the delay of thin mine tailing in drain system, overstriking aperture of filter screen, improves water seepage drainage effect.Parallel lay-up water seepage drainage prism can not utilize the natural grade on dry beach, and rib body section is larger, and flow velocity is less, and in rib body, seepage water cannot concentrate water conservancy diversion to improve flow.Therefore often adopt geotextiles as filter screen, thin mine tailing shutoff screen surface causes the stasis of blood stifled, and water seepage drainage prism lost efficacy.

Summary of the invention

The object of the invention is in order to overcome the deficiencies in the prior art, to provide a kind of row to ooze rational in infrastructure, technique is simple, constructability, and the duration is short, and expense is low, the interior oppositely method for embedding of chimney filter drain system of a kind of tailing dam that water seepage drainage effect is good.

For the technical scheme that realizes this object and provide is:

?a method for embedding for reverse chimney filter drain system in tailing dam, comprises the following steps:

Aqueduct is buried underground: by artificial or mechanical stringing mode, aqueduct is implanted in tailings dam, formed the seepage channel that leads to dam body below from tailings dam top;

Header is buried underground: along being parallel on the tailings dam of fill dam, excavate header groove, segmental installation header in header groove, described header is buried the gradient underground and is greater than 1%, between every section of header, by pipe fitting, peg graft or welding manner connects, header is connected with aqueduct, then with former mineral, fills and leads up the compacting of header groove;

Soakaway trench is buried underground; Along dry sand of tailings reservoir natural grade excavation drainage pipe groove, soakaway trench is placed in drainage pipe groove, and the soakaway trench gradient is consistent with the dry beach gradient, and soakaway trench is connected with header, then uses coarse sand as loaded filter backfill drainage pipe groove.

Described reverse chimney filter drain system is comprised of loaded filter, soakaway trench, header and aqueduct.

The water that described soakaway trench oozes out is to flow in header to direction in Tailings Dam, by the header aqueduct of flowing through, is finally flow to outside tailing dam.

The present invention adopts the embedding manner that takes reverse drain system in dam, has effectively controlled the height of the thick phreatic line of mine tailing, prevents that phreatic line from rising, and guarantees that dam body is stable, has reduced maintenance cost ，Wei enterprise and has saved a large amount of later regulation expenses.Simultaneously its row is oozed rational in infrastructurely, and technique is simple, constructability, and the duration is short, and expense is low, and water seepage drainage effect is good, thereby has eliminated being in danger of tailing dam, caves in, the safety such as dam break falls into and suffer from.

Accompanying drawing explanation

Fig. 1 be the present invention in tailing dam oppositely chimney filter drain system bury schematic diagram underground.

The specific embodiment

A method for embedding for reverse chimney filter drain system in tailing dam, comprises the following steps:

Aqueduct is buried underground: by artificial or mechanical stringing mode, many aqueducts that are parallel to each other 2 are implanted in tailings dam 5, formed the seepage channel that leads to dam body below from tailings dam 5 tops, aqueduct 2 can adopt ∮ 60 ~ ∮ 200 vinyl tubes;

Header is buried underground: along being parallel on the tailings dam 5 of fill dam 1, excavate header groove, segmental installation header 4 in header groove, described header 4 is buried the gradient underground and is greater than 1%, the header gradient that is every hundred meters is 1 degree, the header gradient of 200 meters is 2 degree, by that analogy, header 4 adopts ∮ 60 ~ ∮ 200 vinyl tubes, between every section of header 4, by pipe fitting, peg graft or connect by heat sealing machine welding manner, header 4 is connected with aqueduct 2, then with former mineral, fills and leads up the compacting of header groove;

Soakaway trench is buried underground; Along many drainage pipe grooves that are parallel to each other of dry sand of tailings reservoir natural grade excavation, in each drainage pipe groove, place soakaway trench 3, it is consistent with the dry beach gradient that soakaway trench 3 is buried the gradient underground, soakaway trench 3 is connected with header 4, then use coarse sand as loaded filter backfill drainage pipe groove, soakaway trench 3 can be by punching on ∮ 60 ~ ∮ 200 vinyon bodys, and appearance is wound around white steel mesh, nylon wire or geotextiles and makes as filtration beds.

Above-mentioned loaded filter, soakaway trench, header and aqueduct form reverse chimney filter drain system; Described soakaway trench is connected with header, aqueduct is connected with threeway or four-way connection and is connected with header; Described aqueduct quantity is buried gradient restriction setting underground according to header and determine, in the time of cannot meeting the header gradient, should shorten header length, increase aqueduct quantity as execution conditions.The water that described soakaway trench oozes out is to flow in header to direction in Tailings Dam, by the header aqueduct of flowing through, is finally flow to outside tailing dam.

Claims

1. a reverse method for embedding for chimney filter drain system in tailing dam, comprises the following steps:

2. the method for embedding of reverse chimney filter drain system in a kind of tailing dam according to claim 1, is characterized in that described reverse chimney filter drain system is comprised of loaded filter, soakaway trench, header and aqueduct.

3. the reverse method for embedding of chimney filter drain system in a kind of tailing dam according to claim 1, is characterized in that water that described soakaway trench oozes out is to flow in header to direction in Tailings Dam, by the header aqueduct of flowing through, is finally flow to outside tailing dam.