Summary of the invention
It is sharp again for earth pressure balanced shield, EPBS dregs and integrated wastewater that technical problem to be solved by the invention is to provide one kind
With system, dregs generated in earth pressure balanced shield, EPBS work progress and sewage are effectively separated, to dregs and sewage
It is recycled, to reduce shield-tunneling construction cost.
It is as follows that the present invention solves technical solution used by the technical problem:
One kind of the invention is used for earth pressure balanced shield, EPBS dregs and integrated wastewater reutilization system, it is characterized in that: the system
Including being set to sludge-water separating system near shield machine working shaft pit, sizing mixing and slurries pumping system, press filteration system and stirring
It stands;Dregs, sewage enter sludge-water separating system, carry out separating and dehydrating through scalping, separation equipment, isolate a variety of particles from mud
Object;From sludge-water separating system come out after mud in a part be pumped into and size mixing and slurries pumping system, conduct after modulation
Sediment improvement agent utilizes again, and another part feeding mixing plant stirs into synchronous slurries with additive and utilizes again, remaining mud
It is pumped to press filteration system, obtains fines mud cake, filters pressing water, the recycling of filters pressing water is used for this system and shield-tunneling construction.
The system further includes the water filtering system being made of filter plant, outer circulation pond, and water filtering system is by filters pressing water
It is filtered into clear water, pumping outer circulation pond is used for this system and shield-tunneling construction, and extra clear water is discharged into municipal Storm Sewer Network.
The system further includes scrubbing system, and what sludge-water separating system was isolated passes through the clear water from outer circulation pond containing silt particle
Clean sand is isolated after flushing.
The system further includes cobble crushing system, before dregs enters scalping that the big partial size cobble in dregs is directly broken
For required ballast grain sizes, rubble needed for mixing concrete is directly used in after roughing.
The invention has the advantages that by sludge-water separating system, rubble system, sizing mixing and slurries pumping system, filters pressing
The combination of the multisystems such as system, water filtering system, scrubbing system, earth pressure balanced shield, EPBS dregs and sewage composition are efficiently separated, broken
Stone, sand, mud and water recycle, and efficiently solve dregs and sewage to The Surroundings in Cities pollution problem, while solving dregs
Bring security risk is put in abandoning, and can effectively reduce shield-tunneling construction cost.
Specific embodiment
The following further describes the present invention with reference to the drawings.
Referring to Fig.1, the present invention is a kind of is used for earth pressure balanced shield, EPBS dregs and integrated wastewater reutilization system, including is set to
Sludge-water separating system near shield machine working shaft pit is sized mixing and slurries pumping system, press filteration system and mixing plant 15.Dregs,
Sewage enters sludge-water separating system, carries out separating and dehydrating through scalping 3, separation equipment, isolates a variety of particulate matters from mud.From mud
Water separating system come out after mud in a part be pumped into and size mixing and slurries pumping system, sediment improvement is used as after modulation
Agent utilizes again, and another part feeding mixing plant 15 stirs into synchronous slurries with additive and utilizes again, and remaining mud pumping is extremely
Press filteration system, obtains fines mud cake, filters pressing water, and the recycling of filters pressing water is used for this system and shield-tunneling construction.
Water filtering system, scrubbing system, cobble crushing system are as optional system.
Referring to Fig.1, the sludge-water separating system includes dregs pond 1, scalping 3, sewage pump 4 and by level-one cyclone 5, level-one
The separation equipment that dewatering screen 6, second cyclone 7, second level dewatering screen 8 are constituted.It is described size mixing and slurries pumping system include size mixing
Pond 10, slurry can 11, the press filteration system include filter press 12.
Dregs is pumped into sludge-water separating system by sewage pump 4 from the excavation of active well pit, sewage by excavator, through scalping
3, level-one separation equipment (level-one cyclone 5, level-one dewatering screen 6), the second-order separation equipment (second cyclone 7, second level dewatering screen 8)
Respectively by coarseparticulate, sand, superfine particulate matter separating and dehydrating (moisture content < 25%) and efficiently used (coarseparticulate as only
There is boulder and cobble, sale is directly transported by transport vehicle;Coarseparticulate is that clod then directlys adopt dumper fortune with superfine particulate matter etc.
It walks to discard;Sand directly can be used or be sold).Mud a part that sludge-water separating system is separated is pumped to size-mixing tank
10, add appropriate bentonite, ultra-fine grain (the dry cake that press filteration system is press-filtered out) or water to carry out slurries modulation, through slush pump, pipeline
It send to slurry can 11 in shield trolley, then send to progress sediment improvement in front of cutterhead through bentonite pump, a plurality of pipeline (using this
Mud carries out sediment improvement, does not use foam).Mud another part enters mixing plant 15, be added bentonite, flyash, sand,
The materials such as cement, the water of filtering, additive stir into synchronous slurries, are used for shield-tunneling construction synchronous grouting.Sludge-water separating system point
Separate out the extra mud come and be pumped to press filteration system through slush pump, fines through filter press 12 be pressed into mud cake (moisture content <
25%) it, is directly transported by dumper and discards or utilize.Filters pressing water is filtered into clear water, pumped back outer circulation water through water filtering system
Pond 14 is used for this system and shield-tunneling construction, and extra clear water is discharged into municipal Storm Sewer Network.
Cobble crushing system can be selected in this system when shield-tunneling construction sand-pebble layer, by dregs before dregs enters scalping 3
In big partial size cobble be directly broken for required ballast grain sizes, rubble needed for mixing concrete is directly used in after roughing.Muddy water
If the sand that separation system level-one separation equipment is isolated is more containing mud, scrubbing system can be selected.If press filteration system is discharged
For clear water, water filtering system can not be selected to be filtered simultaneously direct reuse to water outlet.
Referring to Fig.1, water filtering system is made of filter plant 13, outer circulation pond 14, and water filtering system is by filters pressing water mistake
Filter is clear water, and pumping outer circulation pond 14 is re-used for this system and shield-tunneling construction, and extra clear water is discharged into municipal Storm Sewer Network.Institute
It states scrubbing system and generally uses sand washer 9, what level-one dewatering screen 6 was isolated is sent into sand washer 9 containing silt particle, through coming from outer circulation water
The clear water in pond 14 isolates clean sand after rinsing.The cobble crushing system generally uses stone crusher 2.
A kind of course of work for earth pressure balanced shield, EPBS dregs and integrated wastewater reutilization system of the invention is as follows:
1, the dregs in dregs pond 1 is put into stone crusher 2 by excavator, and the boulder and cobble in dregs is broken into and wants by stone crusher
The rubble (general 5~40mm) for seeking partial size, then falls directly into scalping 3.;
2, sewage is pumped directly in scalping 3 through sewage pump 1, pipeline;
3, coarseparticulate (being greater than 5mm) is dehydrated by dregs and sewage through scalping 3 sifts out (coarseparticulate moisture content < 25%),
Coarseparticulate can directly transport (rubble can be used or sell, other to discard);
4, the mud after scalping 3 is directly pumped through level-one cyclone 5 to level-one dewatering screen 6, is 74um~5mm by partial size
Sand sieve go out (moisture content < 25%), sand can directly transport sale or reuse.The sand sifted out such as level-one dewatering screen 6 containing mud compared with
It is more, the water phase in the outer circulation pond 14 pumped containing silt particle with centrifugal water pump is mixed, it is clear again that sand washer 9 will contain silt particle
It washes, clean sand utilizes again, and the sewage that washed-out sand generates is pumped directly to second cyclone 7.
5, the remaining mud of level-one dewatering screen 6 is pumped by sewage pump send through second cyclone 7 to second level dewatering screen 8, by partial size
(moisture content < 25%) is sifted out for the superfine particulate matter of 20~74um, superfine particulate matter is directly transported and discarded;
6, the remaining mud a part of second level dewatering screen 8 is pumped to size-mixing tank 10, and part bentonite is added or filters pressing generates
Ultra-fine grain mud cake, water etc. is modulated into mud needed for sediment improvement, and is pumped to the slurry of the storage in shield machine trolley by slush pump
Tank 11.When shield driving, (bubble is not used using being improved in front of bentonite pump pumping mud to cutterhead to cutting dregs
Foam carries out sediment improvement);
7, the remaining mud another part of second level dewatering screen 8 is pumped to mixing plant 15, and bentonite, sand, flyash, water is added
The materials such as mud, the water of filtering, additive, stir into synchronous slurries, are used for shield-tunneling construction synchronous grouting;
8, the remaining mud redundance of second level dewatering screen 8 is pumped to filter press 12, through high pressure filters pressing, fines object (<
It 20um) is directly pressed into mud cake (moisture content < 25%), can directly transport and discard.The water that filters pressing generates was carried out through filter plant 13
Then filter is pumped directly to outer circulation pond 14 (for this system and shield-tunneling construction), redundance is emitted into municipal rain pipe
Net;
9, more dry to ground dregs when transporting, when scalping 3 can not efficiently separate, using centrifugal pump by outer circulation pond 14
Interior clear water is pumped in dregs hole, and dregs is diluted and is separated again.
This system each section device capability is designed with the highest-capacity of dregs during shield-tunneling construction and sewage discharge,
To meet needs of constructing.Dregs and sewage are in addition to coarseparticulate, superfine particulate matter and fines object part discard, and major part is all
It can effectively utilize, while be saved needed for sediment improvement foaming agent, synchronous serum portion material, shield-tunneling construction with water etc. again,
Dregs and sewage are efficiently solved to The Surroundings in Cities pollution problem, while solving dregs abandoning and putting bring security risk, and
And it can effectively reduce shield-tunneling construction cost.
The above only explains through diagrams, and the present invention is a kind of to be recycled for earth pressure balanced shield, EPBS dregs and integrated wastewater
The some principles and function of system are not intended to for the present invention being confined in shown and described specific structure and the scope of application,
Therefore all corresponding modifications that may be utilized and equivalent belong to the applied the scope of the patents of the present invention.