CN108915060A - A kind of dewatering of big scale of construction high-moisture low-permeability waste residue - Google Patents
A kind of dewatering of big scale of construction high-moisture low-permeability waste residue Download PDFInfo
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- CN108915060A CN108915060A CN201810746721.5A CN201810746721A CN108915060A CN 108915060 A CN108915060 A CN 108915060A CN 201810746721 A CN201810746721 A CN 201810746721A CN 108915060 A CN108915060 A CN 108915060A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
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- 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
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
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Abstract
The invention discloses a kind of dewaterings of big scale of construction high-moisture low-permeability waste residue, belong to industrial residue utilization field.It is characterized in that：Percolation type drainage channel is implanted into the waste residue of fluidised form or stream plastic state, and above-mentioned system surface is covered on using air-locked film and forms an enclosed system；The enclosed system is vacuumized by drainpipe, the moisture in waste residue is sucked out by percolation type drainage channel, waste residue preliminary hydro-extraction is made to have the soft plastic state waste residue of independence to a certain degree；On this basis, it arranges percolation type drainage channel horizontal direction to form drainage channel group, the waste residue heap stacked to design alternate with the drainage channel group is high, and moisture in waste residue under the driving of gravity, is further squeezed out on it by percolation type drainage channel；The final purpose for realizing waste residue dehydration.The advantage of the invention is that：Big scale of construction waste residue can be dehydrated with cost-effective, and construction area is few.
Description
Technical field
The present invention relates to a kind of dewaterings of big scale of construction high-moisture low-permeability waste residue.Belong to industrial waste residue disposal with
Utilize field.
Background technique
Some industrial processes dump infiltration coefficient lower than 10-4Cm/s, particulate, high-moisture percentage waste residue mud.Usually
These waste residue mud are deposited in the waste residue pond of dam body interception.The characteristics of due to the low-permeability of waste residue, high salinity, although
Through long-term deposition, though moisture content is declined, still in stream plastic state, moisture content still may be up to 100 ~ 380%.Such as：It is raw
The alkaline residue that soda ash process dumps is produced, the ingredients such as a large amount of chloride ions, sodium ion, hydroxide ion are contained.Grain diameter is less than 25 μm
Particle can account for up to 98%；Rich in salt calcium chloride, sodium chloride and magnesium chloride etc. soluble easily in water.Since chloride salt is molten
Solution degree is big, has stronger hygroscopicity, and moisture evaporation is slowly, and is still body of paste after causing alkaline residue to stack for a long time, water content
Up to 380%.These waste residue amounts of dumping are very big, and up to thousands of ten thousand steres have been stored up by some factories.The stockpiling of these waste residues
Land occupation, pollution environment.It is intended to this kind of industrial residue harmless treatment or resource utilization, it is necessary to which it is appropriate to be dewatered to
Moisture content.
Although for pulpous state powder dehydration technique there are many kinds of, for this kind of big scale of construction, hyposmosis coefficient, High water cut
The waste residue of amount there is no cost-effective dewatering.Currently, plant produced line production small volume, high value added product can only be borrowed
The technologies such as dehydration technique, such as mechanism filter-pressing, centrifugal dehydration, drying and dewatering.These technical treatments are at high cost, at general waste residue
Reason is difficult to receive.In addition, during the dehydration process to the industrial residue of the scale of construction big in this way, it usually needs occupy large area place, consumption
Take for quite a long time, and treated that waste residue is also required to occupies the interim stockyard of large area.These conditions are often difficult to obtain
Meet.
Summary of the invention
The purpose of the present invention is overcoming above-mentioned deficiency, a kind of dewatering of high-moisture low-permeability waste residue is proposed,
This method can the big scale of construction of cost-effective processing this kind of waste residue, realize the minimizing of waste residue.Governance process and improvement simultaneously
Stockpiling occupied ground is few afterwards, and short processing time.
A kind of dewatering of high-moisture low-permeability waste residue of the invention, it is characterised in that：1）Percolation type is drained
Channel is connected all drainage channel and drainpipe as in the waste residue of the interval of design and length implantation fluidised form or stream plastic state
It connects, and above-mentioned system surface is covered on using air-locked film and forms an enclosed system；By drainpipe to the enclosed system
It vacuumizes, makes to generate negative pressure in the enclosed system, the moisture in waste residue is passed through into percolation type drainage channel under the action of negative pressure
It is sucked out, makes fluidised form or flows the waste residue preliminary hydro-extraction of plastic state, is changed into the soft plastic state waste residue for having independence to a certain degree；2）In this base
On plinth, one group of percolation type drainage channel is formed into drainage channel group to arrangement by the interval and length horizontal of design, the draining is logical
Each drainage channel in road group is connected with drainpipe, allows water into drainage channel by drainpipe to outlet
Out；Rate is built by design thickness and the heap of design, the waste residue heap stacked to design alternate with the drainage channel group is high, waste residue
In moisture on it under the driving of gravity, further squeezed out by percolation type drainage channel；The final mesh for realizing waste residue dehydration
's.
The percolation type drainage channel, which refers to, can filter out waste residue fine grained, the row for only moisture being allowed to penetrate into and being circulated
Aquaporin, including but not limited to following several configurations：Itself water-permeable pipe, the tube wall with filtering layer with fine and closely woven micropore have permeable
The water pipe in hole, commercially available plastic draining board, bag sand well and by the groove system that waste residue surface is arranged back-up sand etc. it is permeable
The drainage channel etc. that material is constituted.
The waste residue is permeability lower than 10-4The fluidised form of cm/s-stream plastic state, fine grained, high-moisture percentage waste residue.
The interval of drainage channel, waste residue thickness, debris dump builds rate and final heap is high, need to be according to the permeability etc. of waste residue
Physicochemical properties and draining duration demand are tested to be calculated determining by design.
Specific embodiment（Usual factory is to guarantee product continuous production, waste residue mud pit all more than one；And in order to protect
Card waste residue pond safety guarantees that waste residue does not overflow under special circumstances, and pond memory mud top surface all can away from mud pit dam body top surface
There are several meters of safe clearances）：
1, in the fluidised form or stream plastic state waste residue mud surface of a waste residue mud pit A, interval and depth by design are artificial vertical
It is inserted into percolation type drainage channel, the port of the drainage channel is connect with extraneous drainpipe is led to；
2, it is laid with air-locked film on above-mentioned system surface, and film edge is embedded in waste residue, form an enclosed system；
3, the enclosed system is vacuumized by drainpipe；Make to generate negative pressure in the enclosed system, will give up under the action of negative pressure
Moisture in slag is sucked out by percolation type drainage channel, is made fluidised form or is flowed the waste residue preliminary hydro-extraction of plastic state, is changed into and has certain journey
Spend the soft plastic state waste residue of independence.（On the one hand this soft plastic state waste residue can bear the weight of construction machinery, waste residue table
Face can be used as the workbench of subsequent construction；It on the other hand, can be by there is the soft plastic state waste residue supported oneself to a certain degree
Certain thickness and heap build rate it is layer-by-layer stack waste residue）；
It 4,, vertically will diafiltration by the interval of design using well known construction machinery using the soft plastic state waste residue level as workbench
Type drainage channel is inserted into waste residue bottom of pond, and the port of the drainage channel is connect with drainpipe A, drainpipe A or come together in outside
The main sewer of boundary's connection, or directly with extraneous connection.（Why percolation type drainage channel is inserted into bottom of pond, be in order to
Waste residue within the scope of the depth of entire pond all provides drainage channel）；
5, one group of percolation type drainage channel is pressed into the interval designed and length horizontal to parallel arrangement in the soft plastic state waste residue level
Drainage channel group is formed, each drainage channel in the horizontal direction drainage channel group is connected with drainpipe B, the drainpipe
B comes together in main sewer with extraneous connection, or directly with extraneous connection；
6, it by the waste residue in another waste residue mud pit B, is drained by the percolation type that the thickness of design is laid on the 5 horizontal direction arrangements
In the group of channel；
7, one layer of percolation type drainage channel group is laid with by 5 method horizontal direction in the waste residue layer surface；
8, by 6 and 7 method repetitive operation, it is successively alternate to stack percolation type drainage channel group and waste residue layer, until reach design
Defined heap is high.The heap of waste residue layer, which builds rate, to be coordinated with lower waste slag drainage rates and gain in strength rate, according to waste residue
The physical and chemical index such as infiltration coefficient simultaneously calculate determination by design based on test result；
9, under the driving of waste residue gravity pressure, the moisture in waste residue will be discharged by percolation type drainage channel through drainpipe, warp
Draining target can be realized after a certain period of time.
10,6 ~ 9 process can be divided into two kinds of situations again：
Situation 1）
a）It, will be known in the fluidised form or stream plastic state waste residue use in another waste residue mud pit B in the 5 horizontal direction drainage channel groups
Technology（Such as the method for pumping）, a waste residue mud layer is poured by the thickness of design；
b）On the waste residue mud layer surface, one group of percolation type drainage channel is pressed into the interval designed and length horizontal to parallel arrangement
Drainage channel group is formed, each drainage channel in the horizontal direction drainage channel group is connected with drainpipe B, the drainpipe
B come together in main sewer then with extraneous connection；
c）By a）And b）Method repetitive operation, it is successively alternate to stack percolation type drainage channel group and waste residue mud layer, until reach
To waste residue mud pit dam crest；
d）It in the waste residue mud surface, is laid with air-locked film and is covered on above-mentioned system surface, and film edge is embedded in useless
In slag, an enclosed system is formed；
e）The enclosed system is vacuumized by drainpipe B；Make to generate negative pressure in the enclosed system, will give up under the action of negative pressure
Moisture in slag is sucked out by percolation type drainage channel, is made fluidised form or is flowed the waste residue preliminary hydro-extraction of plastic state, is changed into and has certain journey
Spend the soft plastic state waste residue of independence；
f）In the soft plastic state waste residue layer surface, one layer of percolation type drainage channel group is laid with by 5 method；
g）During this period, in the fluidised form of another waste residue mud pit B or stream plastic state waste residue mud surface, the artificial interval by design is perpendicular
To insertion permeability drainage channel, the port of drainage channel is connect with extraneous drainpipe C is led to；
h）Surface is laid with air-locked film and is covered on above-mentioned system surface, and film edge is embedded in waste residue, forms one
Enclosed system；
i）The enclosed system is vacuumized by drainpipe C；Make to generate negative pressure in the enclosed system, will give up under the action of negative pressure
Moisture in slag is sucked out by percolation type drainage channel, is made fluidised form or is flowed the waste residue preliminary hydro-extraction of plastic state, is changed into and has certain journey
Spend the soft plastic state waste residue of independence；
j）By g）~ i）Method repetitive operation, until waste residue pond B in fluidised form or flow plastic state waste residue all processing complete（It is useless
The waste residue of slag bath lower part is possible to be in soft plastic state）；
k）At the same time, using well known construction machinery（Such as：Belt conveyer）, by i）And j）In obtained waste residue pond B,
Plastic state waste residue can support oneself to a certain degree, soft is transported to waste residue pond A, and paves by the thickness of design to by f）Obtained percolation type
In drainage channel group；The rate to pave is tested to be calculated by design according to physicochemical properties such as the water penetrations of waste residue determining；It is useless
The slag blanket end can use well known method（Such as：Reinforced earth gear, earth bank and earth bag or mud sack dam body etc. are done
Method）Supporting and retaining system is carried out to be unlikely to collapse to maintain the dimensionally stable of the waste residue layer；
l）One layer of percolation type drainage channel group is laid with by 5 method in the soft plastic state waste residue layer surface；
m）By k）Method pave in the percolation type drainage channel group one layer of soft plastic state waste residue；
n）By l）And m）The step of and method repetitive operation, successively alternate stack percolation type drainage channel group and soft plastic state waste residue
Layer, until whole waste residues all heaps of waste residue pond B are built on the A of waste residue pond or heap is up to the limit value to design code；
o）By the dam body materials of waste residue pond B, also heap is built in n）On the top layer waste residue layer to pave, as the ballast for being applied to waste residue layer；
p）Moisture in waste residue is gradually discharged from percolation type drainage channel through drainpipe under gravity compressing, until reaching through setting
Meter calculates the ballast water discharge time provided, completes the dewatering work of waste residue.
Situation 2）
a）In the fluidised form or stream plastic state waste residue mud surface of another waste residue mud pit B, infiltration is vertically manually inserted by the interval of design
The port of each drainage channel is connect by filter type drainage channel with extraneous drainpipe C is led to；
b）Surface is laid with air-locked film and is covered on above-mentioned system surface, and film edge is embedded in waste residue, forms one
Enclosed system；
c）The enclosed system is vacuumized by drainpipe C, makes to generate negative pressure in the enclosed system；It, will under the action of negative pressure
Moisture in waste residue is sucked out by percolation type drainage channel, make fluidised form or flow the waste residue preliminary hydro-extraction of plastic state, be changed into have it is certain
The soft plastic state waste residue of degree independence；
d）By a）~ c）Method repetitive operation, until waste residue pond B in fluidised form or flow plastic state waste residue all processing complete（It is useless
The waste residue of slag bath lower part is possible to be in soft plastic state）；
e）Using well known method（Such as：Belt conveyer）, by c）And d）It can support oneself to a certain degree in obtained waste residue pond B
Soft plastic state waste residue is transported to waste residue pond A, and paves by the thickness of design onto the percolation type drainage channel group obtained by 5；It paves
Rate, according to the physicochemical properties such as the water penetration of waste residue tested by design calculate determine；The waste residue layer end can use
Well known method（Such as：Reinforced earth gear, earth bank and the methods such as earth bag or mud sack dam body）Supporting and retaining system is carried out, to maintain
The dimensionally stable of the waste residue layer is unlikely to collapse；
f）One layer of percolation type drainage channel group is laid with by 5 method in the soft plastic state waste residue layer surface；
g）By e）Method pave in the percolation type drainage channel group one layer of soft plastic state waste residue；
h）By f）And g）The step of and method repetitive operation, successively alternate stack percolation type drainage channel group and soft plastic state waste residue
Layer, until whole waste residues all heaps of waste residue pond B are on the A of waste residue pond or heap is up to the limit value to design code；
i）By the dam body materials of waste residue pond B, also heap is built in h）On the top layer waste residue layer to pave, as the ballast for being applied to waste residue layer；
j）Moisture in waste residue is gradually discharged from percolation type drainage channel through drainpipe under gravity compressing, until reaching through setting
Meter calculates the ballast water discharge time provided, completes the dewatering work of waste residue.
Compared with prior art, the beneficial effects of the invention are that：
1, negative pressure of vacuum suction strainer is dehydrated in conjunction with waste residue self weight filter-press dehydration, is had complementary advantages.Do not have for fluidised form ~ stream plastic state waste residue
There is the ability for bearing pressure to allow to be quickly obtained by pulpous state waste residue fast dewatering using negative pressure of vacuum suction strainer dehydration technique
The ability of waste residue is covered in carrying；And then filter-press dehydration is further implemented to waste residue using waste residue self gravity, it drastically reduces
Energy consumption；
2, for the waste residue dewatering projects of this big scale of construction, using existing any method, total dehydration treatment time is all
It needs for quite a long time, that is to say, that the waste residue dewatering projects of this big scale of construction allow the longer duration.On the other hand it uses
Gravity dehydration needs certain pressure time.This technology preferably has matched the characteristics of dehydration technique and the limitation of waste residue dehydration
The characteristics of condition, is self-possessed using waste residue and completes dehydration；Most of process of each layer waste residue dehydration can synchronize progress.To substantially
Degree saves dehydration energy, while processing total construction period has been greatly shortened；
3, big scale of construction waste residue is dehydrated using this technology, former waste residue is made full use of to take up an area, do not need to be further provided with dehydration place；And
Equipment is simple, easy construction.
Embodiment
Embodiment one
Certain alkaline residue stockyard is there are two alkaline residue mud pit, pond height of dam 18m, has deposited alkaline residue mud 15m, and 58 hectares of pond top area.Alkaline residue
Grain fineness：50%<10 μm, 98%<23μm；Infiltration coefficient 4.2010-7cm/s；Moisture content 326%.
It is dehydrated target：Alkaline residue moisture content is down to 50%.
Implementation steps and method
1, it in the fluidised form waste residue mud surface of a waste residue mud pit A, is manually vertically inserted by line-spacing and column away from the interval for being 1m
Enter 5m depth plastic draining board, the upper port of each plastic draining board is connect with the plastic drain-pipe A of diameter 5cm；Drainpipe A connection
Lead to extraneous main sewer；
2, it is laid with plastic film on above-mentioned system surface, and film edge is embedded in waste residue, form an enclosed system；
3, the enclosed system is vacuumized by drainpipe A；Make to generate negative pressure in the enclosed system, it will under the action of negative pressure
Moisture in waste residue is sucked out by plastic draining board through drainpipe, is made the preliminary hydro-extraction of fluidised form waste residue, is changed into soft plastic state waste residue；
4, using the soft plastic state waste residue level as workbench, board-plugging device is used away from the interval for being 1m by line-spacing and column, by plastics
Drain bar is vertically inserted into waste residue bottom of pond, and the upper port of each plastic draining board is connect with the drainpipe A of diameter 5cm；Drainpipe A
Extraneous main sewer is led in connection；
5, it in the soft plastic state waste residue level, is arranged in parallel plastic draining board horizontal direction to form drainage channel by the interval of 1m
Group, the every 50m of the horizontal direction drainage channel group has together perpendicular to the plastic drain-pipe B of plastic draining board horizontal direction arrangement, each
Plastic draining board is connected with drainpipe B, and drainpipe B comes together in and extraneous connection B main sewer；
6, in the 5 horizontal direction drainage channel groups, by the fluidised form waste residue in another waste residue mud pit B using the method for pumping
It is poured one layer of 1m thickness waste residue mud；
7, on the waste residue mud layer surface, by the step of 5 and method arranges one layer of horizontal direction drainage channel group；
8, by 6 and 7 method repetitive operation, it is successively alternate to stack horizontal drainage channel group and waste residue mud layer, until reach useless
The dam crest of slag mud pit A；
9, by the system surface that plastic film is covered on above-mentioned fluidised form waste residue mud and horizontal drainage channel group is constituted, and will modeling
Material film edge is embedded in waste residue, forms an enclosed system；
10, the enclosed system is vacuumized by drainpipe；Make to generate negative pressure in the enclosed system, will give up under the action of negative pressure
Moisture in slag is sucked out by percolation type drainage channel, is made the waste residue preliminary hydro-extraction of fluidised form, is changed into and has independence to a certain degree
Soft plastic state waste residue；
11, in the soft plastic state waste residue layer surface, one layer of horizontal direction drainage channel group is laid with by 5 method；
12, during this period, make the remaining stream plastic state waste residue mud preliminary hydro-extraction of another waste residue mud pit B by 1 ~ 3 method, turn
Become the soft plastic state waste residue for having independence to a certain degree；
13, using belt conveyer by it is in waste residue pond B that 12 obtain, can support oneself to a certain degree, soft plastic state waste residue be transported to it is useless
On the waste residue layer of slag bath A, the thick 1m that paves to the horizontal direction drainage channel group obtained by 11, point three equal sub-layers of thickness are layer-by-layer
It paves.The waste residue layer end carries out supporting and retaining system using reinforced earth gear, to maintain the dimensionally stable of the waste residue layer；
14, one layer of horizontal direction drainage channel group is laid with by 5 method in the soft plastic state waste residue layer surface；
15, it paves in the horizontal direction drainage channel group one layer of soft plastic state waste residue by 13 method；
16, the step of pressing 14 and 15 and method repetitive operation, it is successively alternate to stack horizontal direction drainage channel group and waste residue layer, until
The soft plastic state waste residue of the whole obtained by 12 all heaps are built on the A of waste residue pond.The heap of waste residue layer is built rate and need to be drained with lower waste slag
Rate and gain in strength rate are coordinated, according to the index that the infiltration coefficient of waste residue and experimental test obtain, design code every 10
Its heap builds one layer；
17, soft plastic state has been in since B remaining bottom waste residue in waste residue pond is deposited for many years.Continue by the step of 16 and method
Repetitive operation, it is successively alternate to stack horizontal direction drainage channel group and soft plastic state waste residue layer, until the remaining bottom waste residue of waste residue pond B
All heap is built on the A of waste residue pond；
18, the dam body materials of waste residue pond B also heap are built on the top layer waste residue layer to pave on the A of waste residue pond, it is useless as being applied to
The ballast of slag blanket；
19, the moisture in waste residue is gradually discharged from percolation type drainage channel through drainpipe, under gravity compressing from 18 work
The fully dehydrating work of waste residue can be completed within 90 days after completion.
Embodiment two
Certain alkaline residue stockyard is there are two alkaline residue mud pit, pond height of dam 15m, has deposited alkaline residue mud 13m, and 48 hectares of pond top area.Alkaline residue
Grain fineness：50%<13 μm, 98%<25μm；Infiltration coefficient 7.2410-6cm/s；Moisture content 267%.
It is dehydrated target：Alkaline residue moisture content is down to 50%.
Implementation steps and method
1, it in the fluidised form waste residue mud surface of a waste residue mud pit A, is manually vertically inserted by line-spacing and column away from the interval for being 1m
Enter 5m depth plastic draining board, the upper port of each plastic draining board is connect with the plastic drain-pipe A of diameter 5cm；Drainpipe A connection
Lead to extraneous main sewer；
2, it is laid with plastic film on above-mentioned system surface, and film edge is embedded in waste residue, form an enclosed system；
3, the enclosed system is vacuumized by drainpipe A；Make to generate negative pressure in the enclosed system, will give up under the action of negative pressure
Moisture in slag is sucked out by plastic draining board through drainpipe, is made the preliminary hydro-extraction of fluidised form waste residue, is changed into soft plastic state waste residue；
4, the soft plastic state waste residue level is workbench, board-plugging device is used away from the interval for being 1m by by line-spacing and column, by plastics
Drain bar is vertically inserted into waste residue bottom of pond, and the upper port of each plastic draining board is connect with the drainpipe A of diameter 5cm；Drainpipe A
Extraneous main sewer is led in connection；
5, in the soft plastic state waste residue level, plastic draining board is formed into drainage channel to parallel arrangement by the spaced horizontal of 1m
Group, the every 50m of the horizontal direction drainage channel group has together perpendicular to the plastic drain-pipe B of plastic draining board horizontal direction arrangement, each
Plastic draining board is connected with drainpipe B, and drainpipe B comes together in and extraneous connection main sewer；
6, plastic state waste residue mud surface during this period, is flowed in another waste residue mud pit B, the waste residue for flowing plastic state is made by 1 ~ 3 method
Mud preliminary hydro-extraction is changed into the soft plastic state waste residue for having independence to a certain degree；
7, using belt conveyer by can support oneself to a certain degree in waste residue pond B that 6 obtain, soft plastic state waste residue is transported to waste residue pond
On the waste residue layer of A, the thick 1m that paves to the horizontal direction drainage channel group obtained by 5, point three equal sub-layers of thickness successively pave.
The waste residue layer end carries out supporting and retaining system using reinforced earth gear, to maintain the dimensionally stable of the waste residue layer；
8, one layer of horizontal direction drainage channel group is laid with by 5 method in the soft plastic state waste residue layer surface；
9, it paves in the horizontal direction drainage channel group one layer of soft plastic state waste residue by 7 method；
10, the step of pressing 8 and 9 and method repetitive operation, it is successively alternate to stack horizontal direction drainage channel group and soft plastic state waste residue layer,
Until the soft plastic state waste residue of the whole all heaps obtained by 6 are built on the A of waste residue pond.The heap of waste residue layer is built rate and need to be arranged with lower waste slag
Water speed rate and gain in strength rate are coordinated, and according to the index that the infiltration coefficient of waste residue and experimental test obtain, design code is every
Heap builds one layer within 10 days；
11, after completing 10 work, soft plastic state has been in since B remaining bottom waste residue in waste residue pond is deposited for many years.After
Continuous the step of pressing 10 and method repetitive operation, it is successively alternate to stack horizontal direction drainage channel group and soft plastic state waste residue layer, until useless
The soft plastic state waste residue of the remaining bottom of slag bath B all heaps are built on the A of waste residue pond；
12, the dam body materials of waste residue pond B also heap are built on the top layer waste residue layer to pave on the A of waste residue pond, it is useless as being applied to
The ballast of slag blanket；
13, the moisture in waste residue is gradually discharged from percolation type drainage channel through drainpipe, under gravity compressing from 12 work
The fully dehydrating work of waste residue can be completed within 90 days after completion.
Claims (7)
1. a kind of dewatering of big scale of construction high-moisture low-permeability waste residue, it is characterised in that：1）By percolation type drainage channel
By in the waste residue of the interval of design and length implantation fluidised form or stream plastic state, all drainage channels are connect with drainpipe, and
Above-mentioned system surface is covered on using air-locked film and forms an enclosed system；The enclosed system is taken out by drainpipe true
Sky makes to generate negative pressure in the enclosed system, the moisture in waste residue is sucked out by percolation type drainage channel under the action of negative pressure,
Make fluidised form or flows the waste residue preliminary hydro-extraction of plastic state, is changed into the soft plastic state waste residue for having independence to a certain degree；2）On this basis,
One group of percolation type drainage channel is formed into drainage channel group to arrangement by the interval and length horizontal of design, in the drainage channel group
Each drainage channel be connected with drainpipe, discharge the water into drainage channel by drainpipe；It presses
Design thickness and the heap of design build rate, and the waste residue heap stacked to design alternate with the drainage channel group is high, in waste residue
Moisture under the driving of gravity, is further squeezed out on it by percolation type drainage channel；The final purpose for realizing waste residue dehydration.
2. percolation type drainage channel according to claim 1 is can to filter out waste residue fine grained, only moisture is allowed to penetrate into simultaneously
The drainage channel that can be circulated, including：Itself water-permeable pipe, the tube wall with filtering layer with fine and closely woven micropore have the water of permeable hole
Pipe, bag sand well, passes through the draining of the seepy materials such as back-up sand composition in the groove system that waste residue surface is arranged at plastic draining board
At least one of channel.
3. waste residue according to claim 1 is permeability lower than 10-4Cm/s, fluidised form or stream plastic state or soft plastic state, thin
The waste residue of grain, high-moisture percentage.
4. a kind of dewatering of big scale of construction high-moisture low-permeability waste residue according to claim 1, construction method
It is characterized in that：
In the fluidised form or stream plastic state waste residue mud surface of a waste residue mud pit A, seeped by the interval of design and deep vertical insertion
The port of the drainage channel is connect by filter type drainage channel with extraneous drainpipe is led to；
It is laid with air-locked film on above-mentioned system surface, and film edge is embedded in waste residue, forms an enclosed system；
The enclosed system is vacuumized by drainpipe；Make to generate negative pressure in the enclosed system, by waste residue under the action of negative pressure
In moisture be sucked out by percolation type drainage channel, make fluidised form or flow the waste residue preliminary hydro-extraction of plastic state, be changed into and have to a certain degree
The soft plastic state waste residue of independence；
Using the soft plastic state waste residue level as workbench, percolation type drainage channel is vertically inserted into waste residue pond by the interval of design
The port of the drainage channel is connect by bottom with drainpipe A, drainpipe A and extraneous connection；
In the soft plastic state waste residue level, one group of percolation type drainage channel is pressed into the interval designed and length horizontal to parallel arrangement
Drainage channel group is formed, each drainage channel in the horizontal direction drainage channel group is connected with drainpipe B, the drainpipe
B or come together in main sewer then with extraneous connection, or directly with extraneous connection；
By the waste residue in another waste residue mud pit B, 5 are laid on by the thickness of design）The percolation type draining of the horizontal direction arrangement
In the group of channel；
In the waste residue layer surface, by 5）Method horizontal direction be laid with one layer of percolation type drainage channel group；
By 6）With 7）Method repetitive operation, it is successively alternate to stack percolation type drainage channel group and waste residue layer, until reach design
Defined heap is high；The heap of waste residue layer, which builds rate, to be coordinated with lower waste slag drainage rates and gain in strength rate, be based on by design
Test result, which calculates, to be determined；
Under the driving of the waste residue gravity stacked on it, the moisture in waste residue will be arranged by percolation type drainage channel through drainpipe
Out, draining target can be realized after a certain period of time.
5. according to claim 1 with claim 4, the feature that the waste residue in another waste residue mud pit B is paved to waste residue pond A
It is：
1）In claim 45）In the horizontal direction drainage channel group, by the fluidised form or stream modeling in another waste residue mud pit B
State waste residue is poured a waste residue mud layer by the thickness of design；
2）On the waste residue mud layer surface, by claim 45）The step and method arrange that one layer of horizontal direction draining is logical
Road group；
3）By 1）With 2）Method repetitive operation, it is successively alternate to stack percolation type drainage channel group and waste residue mud layer, until reach
To the dam crest of waste residue mud pit A；
4）Air-locked film is covered on the waste residue mud layer and horizontal direction drainage channel group surface, and film edge is embedded in useless
In slag, an enclosed system is formed；
5）The enclosed system is vacuumized by drainpipe, makes to generate negative pressure in the enclosed system, will give up under the action of negative pressure
Moisture in slag is sucked out by percolation type drainage channel, is made fluidised form or is flowed the waste residue preliminary hydro-extraction of plastic state, is changed into and has certain journey
Spend the soft plastic state waste residue of independence；
6）In the soft plastic state waste residue layer surface, continue by claim 46）~9）The step of operated.
6. according to claim 1 with claim 4, the feature that the waste residue in another waste residue mud pit B is paved to waste residue pond A
It is：
1）By in claim 41）~3）Method make stream plastic state waste residue mud preliminary hydro-extraction in another waste residue mud pit B, turn
Become the soft plastic state waste residue for having independence to a certain degree；
2）It will be by 1）The obtained soft plastic state waste residue in the B of waste residue pond is transported to waste residue pond A, and paves by the thickness of design to by weighing
Benefit requires 5 in 4）In the horizontal direction percolation type drainage channel group；The rate to pave, according to physical chemistry such as the water penetrations of waste residue
Property is tested to be calculated by design and be determined；The waste residue layer end carries out supporting and retaining system using well known method, to maintain the waste residue layer unlikely
In collapsing；
3）In the soft plastic state waste residue layer surface by claim 45）Method be laid with one layer of percolation type drainage channel group；
4）By 2）Method pave in the percolation type drainage channel group one layer of soft plastic state waste residue；
5）By 3）With 4）The step of and method repetitive operation, successively alternate stack percolation type drainage channel group and soft plastic state waste residue
Layer, until debris dump is up to the limit value to design code.
7. according to claim 1 with claim 4, the feature that the waste residue in another waste residue mud pit B is paved to waste residue pond A
It is：
1）The soft plastic state waste residue of another waste residue pond B is transported to waste residue pond A, and is paved by the thickness of design to by claim 4
In 5）In the horizontal direction percolation type drainage channel group；The rate to pave is passed through according to physicochemical properties such as the water penetrations of waste residue
Test is calculated by design and is determined；The waste residue layer end carries out supporting and retaining system, to maintain the waste residue layer to be unlikely to collapse；
2）In the soft plastic state waste residue layer surface by claim 45）Method be laid with one layer of percolation type drainage channel group；
3）By in claim 46）~9）The step of complete follow-up work.
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Cited By (1)
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