CN112774853A - Muck circulating treatment system and method for shield construction - Google Patents
Muck circulating treatment system and method for shield construction Download PDFInfo
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- CN112774853A CN112774853A CN202011567808.XA CN202011567808A CN112774853A CN 112774853 A CN112774853 A CN 112774853A CN 202011567808 A CN202011567808 A CN 202011567808A CN 112774853 A CN112774853 A CN 112774853A
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- sand
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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- Treatment Of Sludge (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a muck circulating treatment system and a muck circulating treatment method for shield construction, which belong to the technical field of underground engineering, wherein a treatment system consisting of a single-stage screening mechanism, a single-stage swirler and a single-stage sand washer is used for treating shield muck, so that the process can be saved, the muck circulating treatment system is convenient to arrange underground, and comprises a screening mechanism, a swirler, a dewatering mechanism and a sand washer which are sequentially communicated, wherein the screening mechanism, the swirler, the dewatering mechanism and the sand washer are all communicated with a mud pit, the mud pit is communicated with a filter press through an overflow pipe, the overflow pipe and the filter press are both communicated with a clean water pit, and the clean water pit; screening mechanism and swirler all communicate the first belt conveyor who is used for transporting the coarse sand.
Description
Technical Field
The invention belongs to the technical field of underground engineering, and particularly relates to a muck circulating treatment system and a muck circulating treatment method for shield construction.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The existing underground engineering often uses a shield construction method in the construction process, and usually uses a shield machine with higher power to excavate earthwork in the underground environment.
The inventor finds that in the shield construction, as the shield machine continuously tunnels forwards, a large amount of muck is generated, and the problem of processing the muck generated in the shield tunneling is a troublesome problem. If the dust is directly transported outside, the cost is high, the dust can be spilled on roads, and dust is generated, so that the pollution is great. Meanwhile, the slag soil contains a large amount of reusable sand, stone, soil, water, bentonite, foam and the like, if the slag is discarded, huge waste of resources is caused, but if the slag is filled and consumed for a long time, a large amount of land resources are occupied, and meanwhile, the side slope of the pile body has landslide hazard risks.
The prior art documents disclose a shield muck treatment method, which separates shield muck into a plurality of separate components for utilization through a multistage vibrating screen and a multistage cyclone.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a muck circulating treatment system and a muck circulating treatment method for shield construction.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, the technical scheme of the invention provides a muck circulating treatment system for shield construction, which comprises a screening mechanism, a cyclone, a dewatering mechanism and a sand washer which are sequentially communicated, wherein the screening mechanism, the cyclone, the dewatering mechanism and the sand washer are all communicated with a mud pit, the mud pit is communicated with a filter press through an overflow pipe, the overflow pipe and the filter press are all communicated with a clean water pool, and the clean water pool is communicated with the screening mechanism; screening mechanism and swirler all communicate the first belt conveyor who is used for transporting the coarse sand.
In a second aspect, the technical solution of the present invention further provides a muck cycle processing method for shield construction, where the muck cycle processing system for shield construction according to the first aspect is used, and includes the following steps:
conveying dregs generated by digging of the shield tunneling machine to a screening mechanism for coarse screening to separate coarse sand, slurry and coarse screen objects, wherein the coarse sand is used as building material aggregate, the slurry flows into a slurry tank for treatment, and the coarse screen objects enter a cyclone for cyclone separation;
after the coarse screen is subjected to cyclone separation, coarse sand, primary fine sand and slurry are generated, wherein the coarse sand is used as building material aggregate, the slurry flows into a slurry tank for treatment, and the primary fine sand enters a dewatering mechanism for dewatering;
the slurry generated by the dehydration of the primary fine sand flows into a slurry tank for treatment, and the dehydrated fine sand enters a sand washer for sand washing operation;
the slurry generated in the sand washing operation flows into a slurry tank for treatment, and the fine sand after sand washing is used as finished fine sand for shield grouting;
and (3) enabling slurry in the slurry tank to enter an overflow pipe for overflow filtration, enabling clear water obtained after filtration to flow into a clear water tank for spraying by a coarse screen, enabling the filtered slurry to enter a filter press for filter pressing to obtain a dried mud cake, and enabling clear water generated by filter pressing to flow into the clear water tank for spraying by the coarse screen.
The technical scheme of the invention has the following beneficial effects:
1) the invention provides a muck circulating treatment system for shield construction, which adopts the modes of vibration cleaning and flocculation filter pressing to complete the fractional dehydration separation and drying of muck, filters the muck into building materials of sand stone and slurry in a fractional manner, adds a flocculating agent into the slurry, and separates the building materials into clear circulating water and dried sludge cakes through a filter press. The system realizes effective recycling of the slag soil and water resources, has no pollution and waste in the process, and greatly improves the ecological environment-friendly function of subway construction.
2) According to the technical scheme provided by the invention, the shield muck is treated by using the treatment system consisting of the single-stage screening mechanism, the single-stage cyclone and the single-stage sand washer, so that the working procedures can be saved, and meanwhile, the shield muck is convenient to arrange underground.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a system configuration diagram of the present invention in accordance with one or more embodiments.
In the figure: 1. the device comprises the following components of residue soil, 2, a first belt conveying mechanism, 3, a clean water tank, 4, a slurry tank, 5, an overflow pipe, 6, a filter press, 7, a third belt conveying mechanism, 8, a sand washer, 9, a dewatering mechanism, 10, a cyclone, 11, a second belt conveying mechanism, 12 and a screening mechanism.
The spacing or dimensions between each other are exaggerated to show the location of the various parts, and the illustration is for illustrative purposes only.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the invention expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with the directions of up, down, left and right of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Term interpretation section: the terms "mounted," "connected," "fixed," and the like in the present invention are to be understood in a broad sense, and for example, the terms "mounted," "connected," and "fixed" may be fixed, detachable, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.
As described in the background art, in view of the shortcomings of the prior art, the present invention provides a muck recycling system and method for shield construction, which uses a processing system consisting of a single-stage screening mechanism, a single-stage cyclone and a single-stage sand washer to process shield muck, thereby saving the process steps and facilitating the underground arrangement.
Example 1
In a typical embodiment of the invention, the embodiment discloses a muck circulating treatment system for shield construction, which comprises a screening mechanism 12, a cyclone 10, a dewatering mechanism 9 and a sand washer 8 which are sequentially communicated, wherein the screening mechanism 12, the cyclone 10, the dewatering mechanism 9 and the sand washer 8 are all communicated with a mud pit 4, the mud pit 4 is communicated with a filter press 6 through an overflow pipe 5, the overflow pipe 5 and the filter press 6 are all communicated with a clean water pit 3, and the clean water pit 3 is communicated with the screening mechanism 12; the screening mechanism 12 and the cyclone 10 are both communicated with a first belt conveying mechanism 2 for conveying coarse sand.
More specifically, in this application, screening mechanism 12, swirler 10, dehydration mechanism 9 and sand washer 8's quantity are 1, and this application can adopt multiple spatial layout when arranging to the complex environment of the underground construction of adaptation reduces the space that whole dregs processing system took in the underground, makes the shield structure dregs can accomplish in the shield tunnel and handles, and will handle the direct use of putting into use of the part that can reuse after, reduces shield structure dregs turnover cycle.
Further, a feed inlet of the screening mechanism 12 is communicated with the residue soil pile through the first belt conveying mechanism 2, and a first screening outlet of the screening mechanism 12 and a first screening outlet of the cyclone 10 are used for intensively stacking screened coarse sand through the second belt conveying mechanism 11.
More specifically, the sieving mechanism 12 in this embodiment is a vibrating sieve, which is a filtering mechanical separation device for slurry solid phase treatment, and is composed of a sieve and a vibrator, as is well known. The mesh size is generally 50 mesh or less, and is a coarse mesh, and 80 mesh or more is a fine mesh. The vibrator is an eccentric wheel and is driven by the motor to rotate, so that the sieve frame vibrates. Due to the vibration of the screen frame, when the slurry flows onto the screen surface, the coarse solid particles are retained on the screen surface and discharged from one end along the inclined surface, and the fine solid particles flow together with the slurry liquid through the screen holes to the slurry tank 4.
The vibrating screen in this embodiment is a two-stage vibrating screen, that is, the vibrating screen in this embodiment has at least two screens and three outlets, which are respectively used for discharging coarse sand, coarse screen material and slurry.
A second screening outlet of the screening mechanism 12 communicates with the cyclone 10 for transporting coarse material and a third screening outlet of the screening mechanism 12 communicates with the mud pit 4 for transporting mud. The feed inlet of the cyclone 10 is communicated with the screening mechanism 12, the second screening outlet of the cyclone 10 is communicated with the dewatering mechanism 9 to transport primary fine sand, and the third screening outlet of the cyclone mechanism is communicated with the mud pit 4 to transport mud.
The first screening outlet of the screening mechanism 12 is connected to the cyclone 10 via a pipe at the second screening outlet of the screening mechanism 12. it will be appreciated that the screening mechanism 12 is higher than the cyclone 10 to facilitate gravity-directed transport of the coarse screen to the cyclone mechanism. The third screening outlet of the screening mechanism 12 is located at the lowest layer of the screening mechanism 12 and is directly communicated with the mud pit 4 through a pipeline provided with a pump body.
Further, the overflow pipe 5 is connected with a filtering mechanism, and the filtering mechanism is communicated with the clean water tank 3; the overflow pipe 5 is communicated with a filter press 6.
Specifically, the filtering mechanism is a filter screen; the inner edge of overflow pipe 5 is connected to the edge of filter screen, mud filters the back through the filter screen, differentiate into clear water and mud dregs, it can be understood, the mud dregs is the material of 5 pipeline sections of overflow pipe in staying the filter screen, in order to transport these materials to pressure filter 6, the pressure filter 6 of pipeline intercommunication is passed through to the pipeline section in the filter screen of overflow pipe 5, and be equipped with the pump body and valve body on the pipeline, after the mud dregs in overflow pipe 5 piles up certain quantity, the valve body is opened, the pump body starts, mud dregs is transported to pressure filter 6, and the clear water that obtains through filtering flows to clear water pond 3.
In the filter press 6 of this embodiment, a special filter medium is used to apply a certain pressure to a subject, so that a mechanical device for dialyzing liquid is a common solid-liquid separation device, and a specific structure thereof is not described herein.
It will be appreciated that in this embodiment the first filter press outlet is connected to the clean water basin 3 by a pipe and the second filter press outlet discharges the cake directly.
In this embodiment, the slurry tank 4 and the clean water tank 3 may be a tank body dug in a tunnel or a tank body built by using a certain building material on a base surface of the tunnel. Because mud is constantly discharged outwards from the mud pool 4 through the overflow pipe 5, the mud pool 4 can be prevented from being naturally blocked, and clear water in the clear water pool 3 can be used for coarse screening and spraying.
In this embodiment, the dewatering mechanism 9 is a vibrating dewatering screen, which mainly comprises a screen box, a vibration exciter, a supporting system and a motor, wherein two vibrators which are not in contact with each other run in a synchronous reverse direction, and the component forces of the centrifugal force generated by the two groups of eccentric masses along the vibrating direction are superposed and offset by reverse centrifugation, so that single induced vibration along the vibrating direction is formed, and the screen box makes a reciprocating linear motion.
A sand washing groove of the sand washing machine 8 is communicated with the mud pit 4, an outlet of the sand washing machine 8 is communicated with the third belt conveying mechanism 7, and the sand washing machine 8 stacks the separated fine sand in a centralized manner through the third belt conveying mechanism 7.
The first belt conveying mechanism 2, the second belt conveying mechanism 11 and the third belt conveying mechanism 7 in this embodiment are all belt conveyors.
In other embodiments, other conveying mechanisms may be used instead of a belt conveyor, such as in the form of a screw conveyor, a bucket elevator, a belt conveyor, a flight conveyor, or the like.
It should be further noted that the sand washer and the cyclone in this embodiment are both common technologies in the art, and detailed descriptions thereof are omitted here.
Example 2
In a typical implementation manner of the present invention, this embodiment discloses a muck cycle processing method for shield construction, which uses the muck cycle processing system for shield construction shown in embodiment 1, and includes the following steps:
conveying dregs generated by the shield tunneling machine to a screening mechanism 12 for coarse screening to separate coarse sand, slurry and coarse screen objects, wherein the coarse sand is used as building material aggregate, the slurry flows into a slurry tank 4 for treatment, and the coarse screen objects enter a swirler 10 for cyclone separation;
after the coarse screen is subjected to cyclone separation, coarse sand, primary fine sand and slurry are generated, wherein the coarse sand is used as building material aggregate, the slurry flows into a slurry tank 4 for treatment, and the primary fine sand enters a dehydration mechanism 9 for dehydration;
the slurry generated by the dehydration of the primary fine sand flows into a slurry tank 4 for treatment, and the dehydrated fine sand enters a sand washer 8 for sand washing operation;
the slurry generated in the sand washing operation flows into a slurry tank 4 for treatment, and the fine sand after sand washing is used as finished fine sand for shield grouting;
and the slurry in the slurry tank 4 enters an overflow pipe 5 for overflow filtration, the filtered clear water flows into a clear water tank 3 for spraying by a coarse screen, the filtered slurry enters a filter press 6 for filter pressing to obtain a dried mud cake, and the clear water generated by the filter pressing flows into the clear water tank 3 for spraying by the coarse screen.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A muck circulating treatment system for shield construction is characterized by comprising a screening mechanism, a cyclone, a dewatering mechanism and a sand washer which are sequentially communicated, wherein the screening mechanism, the cyclone, the dewatering mechanism and the sand washer are all communicated with a mud pit, the mud pit is communicated with a filter press through an overflow pipe, the overflow pipe and the filter press are all communicated with a clean water pool, and the clean water pool is communicated with the screening mechanism; screening mechanism and swirler all communicate the first belt conveyor who is used for transporting the coarse sand.
2. The muck recycling system for shield construction according to claim 1, wherein the feed inlet of the screening mechanism is communicated with the muck pile through a first belt conveyor mechanism, and the first screening outlet of the screening mechanism and the first screening outlet of the cyclone are both used for intensively stacking the screened coarse sand through a second belt conveyor.
3. The muck recycling system for shield construction according to claim 2, wherein the second screening outlet of the screening mechanism is in communication with the cyclone for transporting coarse material, and the third screening outlet of the screening mechanism is in communication with the mud pit for transporting mud.
4. The muck recycling system for shield construction according to claim 2, wherein a feed inlet of the cyclone is communicated with the screening mechanism, a second screening outlet of the cyclone is communicated with the dewatering mechanism to transport primary fine sand, and a third screening outlet of the cyclone is communicated with the mud pit to transport mud.
5. The muck recycling system for shield construction according to claim 1, wherein the overflow pipe is connected to a filtering mechanism, and the filtering mechanism is communicated with a clean water tank; the overflow pipe is communicated with the filter press.
6. The muck cycle processing system for shield construction of claim 5 wherein the filter mechanism is a screen.
7. The muck recycling system for shield construction of claim 1 wherein the screening mechanism is a vibrating screen.
8. The muck cycle processing system for shield construction of claim 1 wherein the dewatering mechanism is a vibrating dewatering screen.
9. The muck recycling system for shield construction according to claim 1, wherein a sand washing groove of the sand washer is communicated with the mud pit, an outlet of the sand washer is communicated with a third belt conveying mechanism, and the sand washer is used for intensively stacking the separated fine sand through the third belt conveying mechanism.
10. A muck circulation treatment method for shield construction, which is characterized in that the muck circulation treatment system for shield construction according to any one of claims 1 to 9 is used, and comprises the following steps:
conveying dregs generated by digging of the shield tunneling machine to a screening mechanism for coarse screening to separate coarse sand, slurry and coarse screen objects, wherein the coarse sand is used as building material aggregate, the slurry flows into a slurry tank for treatment, and the coarse screen objects enter a cyclone for cyclone separation;
after the coarse screen is subjected to cyclone separation, coarse sand, primary fine sand and slurry are generated, wherein the coarse sand is used as building material aggregate, the slurry flows into a slurry tank for treatment, and the primary fine sand enters a dewatering mechanism for dewatering;
the slurry generated by the dehydration of the primary fine sand flows into a slurry tank for treatment, and the dehydrated fine sand enters a sand washer for sand washing operation;
the slurry generated in the sand washing operation flows into a slurry tank for treatment, and the fine sand after sand washing is used as finished fine sand for shield grouting;
and (3) enabling slurry in the slurry tank to enter an overflow pipe for overflow filtration, enabling clear water obtained after filtration to flow into a clear water tank for spraying by a coarse screen, enabling the filtered slurry to enter a filter press for filter pressing to obtain a dried mud cake, and enabling clear water generated by filter pressing to flow into the clear water tank for spraying by the coarse screen.
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| CN202011567808.XA CN112774853A (en) | 2020-12-25 | 2020-12-25 | Muck circulating treatment system and method for shield construction |
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| CN202011567808.XA CN112774853A (en) | 2020-12-25 | 2020-12-25 | Muck circulating treatment system and method for shield construction |
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| CN112774853A true CN112774853A (en) | 2021-05-11 |
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Cited By (2)
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| CN114890578A (en) * | 2022-05-13 | 2022-08-12 | 中铁工程服务有限公司 | Muck treatment system and muck treatment method |
| CN115417613A (en) * | 2022-08-23 | 2022-12-02 | 中铁工程服务有限公司 | Engineering muck grouting treatment method |
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