CN103769312A - Construction method for processing and recycling slurry shield muck - Google Patents
Construction method for processing and recycling slurry shield muck Download PDFInfo
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- CN103769312A CN103769312A CN201410010872.6A CN201410010872A CN103769312A CN 103769312 A CN103769312 A CN 103769312A CN 201410010872 A CN201410010872 A CN 201410010872A CN 103769312 A CN103769312 A CN 103769312A
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Abstract
The invention discloses a method for processing and recycling slurry shield muck. According to the method, slurry is coarsely screened, primarily swirled to remove sand and swirled for the second time to remove mud; then the processed over-rich slurry is pressed for filtering, so that the muck taken out along with a slurry recycling system of a slurry shield can be graded and separated more finely, thus the purpose of optimizing the performance of the shield recycling slurry can be achieved; meanwhile, due to the gradation and separation of the shield muck, particles of different types and different properties are recycled and reused specifically; useful components of the shield muck are reused in the scene shield construction, so that the material purchase cost can be saved; outward transport of the waste muck and outward drain of wastewater can be reduced; the construction cost can be saved; the construction environment can be effectively protected.
Description
Technical field
The present invention relates to a kind of slurry shield dregs and process the construction method of recycling.
Background technology
In numerous slurry shield constructions, be only to be separated by simple coarse granule screening plant for the processing of slurry shield dregs.Dregs mud containing rate that this mode sieves is out high, water content is large, loosely organized, and supervenes a large amount of slurries of abandoning.And this processing method dregs particulate cascade after separating is unclear, makes to recycle valuable component in dregs.For so high mud containing rate, the dregs of high-moisture, be all at present to stack field by a large amount of vehicle transport to special dregs to store.In transportation, inevitably existence spills on a small quantity, and subsidiary mud will produce certain pollution after overflowing to environment, and even mud can cause airborne dust and cause air quality to decline after air-dry.In addition, in work progress, produce a large amount of useless slurries directly discarded, consume a large amount of water resources, also bring very large burden to environment.
Summary of the invention
Object of the present invention, is to provide a kind of slurry shield dregs to process the construction method of recycling.
The solution that the present invention solves its technical problem is: a kind of slurry shield dregs is processed the construction method of recycling, and it comprises the following steps,
1), circulating mud is by the stock tank that enters being pumped on pre-cribellum, after the two-layer scalping vibration screening of pre-cribellum, the slag charge by particle diameter more than 2mm is separated;
2) mud, tailing over enters pre-sieve slurry storage tank below, deliver to one-level a cluster cyclone by primary pump, mud is removed chiltern particles more than most 74 μ m after the one-level desanding purification unit in one-level a cluster cyclone is processed, and the slurries after coagulation enter one-level overflow plasma discharge mud pit;
3), two stage pump delivers to second cyclone group the slurries in one-level overflow plasma discharge mud, the secondary swirl de-mud apparatus in second cyclone group can be removed shale particle more than 20 μ m in mud, the slurries after two stage treatment enter secondary overflow plasma discharge mud pit;
4), the shared same dewatering screen of one-level a cluster cyclone and second cyclone group carries out processed;
5) slurries, after two stage treatment enter mud pit, and pumped back down-hole after allotment, enters shield structure circulation system and reuse.
As the further improvement of technique scheme, in step 2), large area recovery is carried out in the discharge chute outlet of one-level desanding processing, is delivered to mortar mixing plant, allocates by slurries, mixes the high-quality grouting serous fluid that is applicable to Shield Construction Method Used.
As the further improvement of technique scheme, by step 2) in one-level desanding process after secondary desilt in chiltern particle and step 3) process after shale particle allocate by slurries, mix the high-quality grouting serous fluid that is applicable to Shield Construction Method Used.
As the further improvement of technique scheme, in step 4), the underflow of described one-level a cluster cyclone extends to the middle level sieve plate of dewatering screen or/and lower floor's sieve plate, and the underflow of described second cyclone group extends to the upper strata sieve plate of dewatering screen.
As the further improvement of technique scheme, after step 5), overrich mud pumping after two stage treatment, after dewatering screen to filtering equipment carries out press filtration processing, can reclaim bentonite and the clear water filtrate that can be used for regulating shield structure circulating mud performance.
As the further improvement of technique scheme, described slurry storage tank, one-level overflow plasma discharge mud pit and secondary overflow plasma discharge mud pit be parallel layout successively, on the common wall of described one-level overflow plasma discharge mud pit and slurry storage tank, be provided with one-level overfall, on the common wall of one-level overflow plasma discharge mud pit and secondary overflow plasma discharge mud pit, be provided with secondary overfall.
As the further improvement of technique scheme, described second cyclone group, one-level a cluster cyclone, dewatering screen and slurry storage tank distribute from top to bottom successively.
The invention has the beneficial effects as follows: the dregs that the present invention can take out of the slurry shield slurry circulatory system carries out finer classification and separates; thereby reach the object of optimizing shield structure circulating mud performance; and by the classification of shield structure dregs with separate; realize dissimilar; particle of different nature is recycled processing targetedly; the useful composition of shield structure dregs is with getting back in on-the-spot shield-tunneling construction; can save material acquisition cost; reducing spoir outward transport and waste water arranges outward; save construction cost simultaneously, construction environment plays effective protective effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present invention, rather than whole embodiment, and those skilled in the art is not paying under the prerequisite of creative work, can also obtain other designs and accompanying drawing according to these accompanying drawings.
Fig. 1 is flow chart of the present invention;
Fig. 2 is the integrated form muddy water treatment system structural representation adopting in the present invention.
The specific embodiment
Below with reference to embodiment and accompanying drawing, the technique effect of design of the present invention, concrete structure and generation is clearly and completely described, to understand fully object of the present invention, feature and effect.Obviously; described embodiment is a part of embodiment of the present invention, rather than whole embodiment, based on embodiments of the invention; other embodiment that those skilled in the art obtains under the prerequisite of not paying creative work, all belong to the scope of protection of the invention.In addition, all connection/annexations of mentioning in literary composition, not singly refer to that member directly joins, and refer to and can, according to concrete performance, connect auxiliary by adding or reducing, and form more excellent draw bail.
With reference to Fig. 1～Fig. 2, the present invention adopts integrated form muddy water treatment system, and every cover integrated form muddy water clarifier is by each a set of and sand washing parts of a pre-cribellum 1, vibrated and dehydrated screen(ing) machine, one-level a cluster cyclone 6, second cyclone group 7 etc.Wherein one-level a cluster cyclone 6 and second cyclone group 7 share same dewatering screen 5, and one-level a cluster cyclone 6 uses the sieve plate of lower floor in dewatering screen 5, and second cyclone group 7 is used dewatering screen 5 sieve plate at the middle and upper levels.According to the needs of slurry shield driving, in the time that slurry shield spoil disposal mud is processed, treatment facility, flow process are comprehensively optimized, to guarantee in to the process of shield structure dregs processing, the well performance indications of controlled circulation mud.Through the integrated form mud cleaning system of optimal design, the dregs that can take out of the slurry shield slurry circulatory system carries out finer classification and separates.By the pre-sieve vibrations that shield structure dregs is carried out separate, one-level Swirling flow sand-removing separates and secondary eddy flow desilt separates, can be to the shield structure dregs of different nature recycling of classifying.Recycling pressure filtering technique, carries out press filtration processing to the overrich mud producing in muddy water processing procedure and construction waste water, separates bentonite composition and moisture in useless slurry.
Slurry shield dregs is processed a construction method of recycling, and it comprises the following steps,
1), circulating mud is by the stock tank that enters being pumped on pre-cribellum 1, after the two-layer scalping vibration screening of pre-cribellum 1, the slag charge by particle diameter more than 2mm is separated;
2) mud, tailing over enters pre-sieve slurry storage tank 2 below, deliver to one-level a cluster cyclone 6 by primary pump 8, mud is removed chiltern particles more than most 74 μ m after the one-level desanding purification unit in one-level a cluster cyclone 6 is processed, and the slurries after coagulation enter one-level overflow plasma discharge mud pit 3;
3), two stage pump 9 is delivered to second cyclone group 7 the slurries in one-level overflow plasma discharge mud, secondary swirl de-mud apparatus in second cyclone group 7 can be removed shale particle more than 20 μ m in mud, and the slurries after two stage treatment enter secondary overflow plasma discharge mud pit 4;
4), one-level a cluster cyclone 6 and the shared same dewatering screen 5 of second cyclone group 7 carry out processed;
5) slurries, after two stage treatment enter mud pit, and pumped back down-hole after allotment, enters shield structure circulation system and reuse.
Be further used as preferred embodiment, in step 2), large area recovery is carried out in the discharge chute outlet of one-level desanding processing, is delivered to mortar mixing plant, allocates by slurries, mixes the high-quality grouting serous fluid that is applicable to Shield Construction Method Used.Chiltern particle belongs to the above particle of 74 μ m.Be the dregs that processing goes out through one-level cyclonic separation, particle diameter is between 74 μ m ~ 2mm.In the time that shield machine tunnels in fine sand layer, medium-sand seam and gravelly sand stratum, can produce in a large number chiltern dregs.Fill in slurry and secondary grouting and need to synchronously carry on the back when shield tunnel construction, grouting serous fluid is cement mortar, need to use a large amount of chiltern particles.We recycle and can save purchasing of lot of materials the chiltern particle in shield structure dregs.
Be further used as preferred embodiment, by step 2) in one-level desanding process after secondary desilt in chiltern particle and step 3) process after shale particle allocate by slurries, mix the high-quality grouting serous fluid that is applicable to Shield Construction Method Used.Clay particle belongs to the above particle of 20 μ m.Be the dregs that processing goes out through secondary cyclonic separation, particle diameter, between 20 μ m ~ 74 μ m, is exactly generally cohesive soil.In the time that shield machine tunnels in silty clay stratum, residual soil stratum and completely decomposed stratum, easily produce such clay particle.
Be further used as preferred embodiment, in step 4), the underflow of described one-level a cluster cyclone 6 extends to the middle level sieve plate of dewatering screen 5 or/and lower floor's sieve plate, and the underflow of described second cyclone group 7 extends to the upper strata sieve plate of dewatering screen 5.
Be further used as preferred embodiment, after step 5), overrich mud pumping after two stage treatment, after dewatering screen 5 to filtering equipment carries out press filtration processing, can reclaim bentonite and the clear water filtrate that can be used for regulating shield structure circulating mud performance.When shield machine tunnels for a long time in clay stratum, because the clay component in stratum is constantly dissolved in the middle of circulating mud, usually cause circulating mud viscosity constantly to raise.In general, when circulating mud viscosity exceedes 30s, can produce adverse influence to slurry shield driving.By overrich mud and construction waste water are carried out to press filtration processing, exactly viscosity is greater than to overrich mud more than 40s, send overrich mud to filtering equipment, overrich mud is separated into clear water and solid particle.Because mud more than viscosity 40s itself has dissolved a large amount of clay components, therefore isolated solid constituent is exactly the bentonite solid of mud cake shape after air-dry.
Be further used as preferred embodiment, described slurry storage tank 2, one-level overflow plasma discharge mud pit 3 and secondary overflow plasma discharge mud pit 4 be parallel layout successively, on the common wall of described one-level overflow plasma discharge mud pit 3 and slurry storage tank 2, be provided with one-level overfall, on the common wall of one-level overflow plasma discharge mud pit 3 and secondary overflow plasma discharge mud pit 4, be provided with secondary overfall.
Be further used as preferred embodiment, described second cyclone group 7, one-level a cluster cyclone 6, dewatering screen 5 and slurry storage tank 2 distribute from top to bottom successively.
More than that preferred embodiments of the present invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement under the prerequisite without prejudice to spirit of the present invention, and the modification that these are equal to or replacement are all included in the application's claim limited range.
Claims (7)
1. slurry shield dregs is processed a construction method of recycling, it is characterized in that: it comprises the following steps,
1), circulating mud is by the stock tank that enters being pumped on pre-cribellum, after the two-layer scalping vibration screening of pre-cribellum, the slag charge by particle diameter more than 2mm is separated;
2) mud, tailing over enters pre-sieve slurry storage tank below, deliver to one-level a cluster cyclone by primary pump, mud is removed chiltern particles more than most 74 μ m after the one-level desanding purification unit in one-level a cluster cyclone is processed, and the slurries after coagulation enter one-level overflow plasma discharge mud pit;
3), two stage pump delivers to second cyclone group the slurries in one-level overflow plasma discharge mud, the secondary swirl de-mud apparatus in second cyclone group can be removed shale particle more than 20 μ m in mud, the slurries after two stage treatment enter secondary overflow plasma discharge mud pit;
4), the shared same dewatering screen of one-level a cluster cyclone and second cyclone group carries out processed;
5) slurries, after two stage treatment enter mud pit, and pumped back down-hole after allotment, enters shield structure circulation system and reuse.
2. slurry shield dregs according to claim 1 is processed the construction method of recycling, it is characterized in that: in step 2), large area recovery is carried out in the discharge chute outlet of one-level desanding processing, be delivered to mortar mixing plant, allocate by slurries, mix the high-quality grouting serous fluid that is applicable to Shield Construction Method Used.
3. slurry shield dregs according to claim 1 is processed the construction method of recycling, it is characterized in that: by step 2) in one-level desanding process after secondary desilt in chiltern particle and step 3) process after shale particle allocate by slurries, mix the high-quality grouting serous fluid that is applicable to Shield Construction Method Used.
4. slurry shield dregs according to claim 1 is processed the construction method of recycling, it is characterized in that: in step 4), the underflow of described one-level a cluster cyclone extends to the middle level sieve plate of dewatering screen or/and lower floor's sieve plate, and the underflow of described second cyclone group extends to the upper strata sieve plate of dewatering screen.
5. slurry shield dregs according to claim 1 is processed the construction method of recycling, it is characterized in that: after step 5), overrich mud pumping after two stage treatment, after dewatering screen to filtering equipment carries out press filtration processing, can reclaim bentonite and the clear water filtrate that can be used for regulating shield structure circulating mud performance.
6. slurry shield dregs according to claim 1 is processed the construction method of recycling, it is characterized in that: described slurry storage tank, one-level overflow plasma discharge mud pit and secondary overflow plasma discharge mud pit be parallel layout successively, on the common wall of described one-level overflow plasma discharge mud pit and slurry storage tank, be provided with one-level overfall, on the common wall of one-level overflow plasma discharge mud pit and secondary overflow plasma discharge mud pit, be provided with secondary overfall.
7. slurry shield dregs according to claim 1 is processed the construction method of recycling, and it is characterized in that: described second cyclone group, one-level a cluster cyclone, dewatering screen and slurry storage tank distribute from top to bottom successively.
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| CN104858048A (en) * | 2015-05-07 | 2015-08-26 | 康明克斯（北京）机电设备有限公司 | Residue soil environmental regenerating retreatment method and equipment by adoption of earth pressure balance shield |
| CN105690558A (en) * | 2016-01-20 | 2016-06-22 | 上海市基础工程集团有限公司 | Circulating slurry regeneration control method for underground diaphragm wall construction of silty-fine sand layer |
| CN106311725A (en) * | 2016-09-26 | 2017-01-11 | 深圳申佳原环保科技有限公司 | Method for industrial treatment of muck |
| CN106978983A (en) * | 2017-04-28 | 2017-07-25 | 浙江坤德创新岩土工程有限公司 | Mud cyclic processing device and its application method |
| CN107056240A (en) * | 2017-04-26 | 2017-08-18 | 长沙锦佳环保科技有限公司 | A kind of production method of utilization metro shield soil configuration sintered common clay brick |
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| CN107587578A (en) * | 2017-09-25 | 2018-01-16 | 中国建筑第五工程局有限公司 | Drainage type dregs pond and earth pressure balanced shield, EPBS dregs multidimensional seepage flow dewatering |
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| CN108355830A (en) * | 2018-03-08 | 2018-08-03 | 中国矿业大学 | A kind of fine sand resource recovering system and technique built in stone ore Tailings Dam |
| CN108409227A (en) * | 2018-02-02 | 2018-08-17 | 中交第二航务工程局有限公司 | Slurry, which is abandoned, using slurry shield abandons sand co-formulated Testing of Grouting Material Behind Segments method |
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| CN106311725A (en) * | 2016-09-26 | 2017-01-11 | 深圳申佳原环保科技有限公司 | Method for industrial treatment of muck |
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| CN107559014A (en) * | 2017-07-21 | 2018-01-09 | 上海隧道工程有限公司 | Mud conditioning platform on movable type water |
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| CN107417066A (en) * | 2017-08-02 | 2017-12-01 | 三川德青工程机械有限公司 | A kind of mud disposal system and method for shield engineering construction |
| CN107443572A (en) * | 2017-08-08 | 2017-12-08 | 中铁隧道集团二处有限公司 | A kind of mud pit configuration application method for meeting two slurry shield machines and constructing simultaneously |
| CN107416994A (en) * | 2017-08-08 | 2017-12-01 | 中铁隧道集团二处有限公司 | A kind of mud multi-stage separation method that slurry shield machine is constructed in fine grained stratum |
| CN107443572B (en) * | 2017-08-08 | 2019-03-29 | 中铁隧道集团二处有限公司 | A kind of mud pit configuration application method for meeting two slurry shield machines and constructing simultaneously |
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| CN107694738A (en) * | 2017-08-22 | 2018-02-16 | 广东中态绿城建筑淤泥渣土实业有限公司 | A kind of construction waste recoverying and utilizing method |
| CN107587578A (en) * | 2017-09-25 | 2018-01-16 | 中国建筑第五工程局有限公司 | Drainage type dregs pond and earth pressure balanced shield, EPBS dregs multidimensional seepage flow dewatering |
| CN108005111B (en) * | 2017-10-17 | 2020-06-30 | 北京中煤矿山工程有限公司 | Vertical shaft construction method used as underground stereo garage |
| CN108005111A (en) * | 2017-10-17 | 2018-05-08 | 北京中煤矿山工程有限公司 | A kind of vertical shaft method of construction as underground three-dimensional garage |
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| CN108409227A (en) * | 2018-02-02 | 2018-08-17 | 中交第二航务工程局有限公司 | Slurry, which is abandoned, using slurry shield abandons sand co-formulated Testing of Grouting Material Behind Segments method |
| CN108355830A (en) * | 2018-03-08 | 2018-08-03 | 中国矿业大学 | A kind of fine sand resource recovering system and technique built in stone ore Tailings Dam |
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Application publication date: 20140507 |