CN114352316B - Slurry stirring system for synchronous double-liquid grouting of shield tunnel - Google Patents
Slurry stirring system for synchronous double-liquid grouting of shield tunnel Download PDFInfo
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- CN114352316B CN114352316B CN202111444686.XA CN202111444686A CN114352316B CN 114352316 B CN114352316 B CN 114352316B CN 202111444686 A CN202111444686 A CN 202111444686A CN 114352316 B CN114352316 B CN 114352316B
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- 238000003756 stirring Methods 0.000 title claims abstract description 136
- 239000002002 slurry Substances 0.000 title claims abstract description 105
- 239000007788 liquid Substances 0.000 title claims abstract description 45
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 60
- 238000002156 mixing Methods 0.000 claims abstract description 29
- 229910000278 bentonite Inorganic materials 0.000 claims description 55
- 239000000440 bentonite Substances 0.000 claims description 55
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 239000004568 cement Substances 0.000 claims description 35
- 239000000428 dust Substances 0.000 claims description 21
- 238000003860 storage Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 230000005641 tunneling Effects 0.000 claims description 6
- 238000009775 high-speed stirring Methods 0.000 claims description 5
- 239000011268 mixed slurry Substances 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 2
- 238000007569 slipcasting Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 25
- 238000004537 pulping Methods 0.000 abstract description 3
- 239000003381 stabilizer Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 238000013019 agitation Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Abstract
The invention discloses a slurry stirring system for synchronous double-liquid grouting of a shield tunnel, which is positioned in the shield tunnel and synchronously moves with a shield machine, wherein the stirring system comprises a tail trolley synchronously connected with the shield machine; an A slurry stirring unit and an A slurry powder supply unit which are arranged on the tail trolley; a slurry supply unit; and a mixing unit for mixing A, B slurry. According to the invention, by additionally arranging a section of shield machine trolley and synchronously moving the pulping equipment of the slurry A along with the shield machine, the short-distance transportation of the slurry A is realized, the performance loss of the slurry A before being mixed with the slurry B is reduced, and the grouting quality is ensured; meanwhile, the construction quantity of the pipeline is greatly reduced, the labor intensity and the construction cost are reduced, and the construction efficiency is effectively improved.
Description
Technical Field
The invention belongs to the technical field of slurry mixing, and particularly relates to a slurry mixing system for synchronous double-liquid grouting of a shield tunnel.
Background
In the shield tunneling process, the outer diameter of a cutter head of the shield is larger than that of a lining segment, the shield shell has a certain thickness, and in addition, the phenomena of over-excavation and the like exist in the excavating process, after the shield tail is separated from the segment, an annular gap can be formed between the segment and a stratum, and in actual shield tunnel engineering, a synchronous grouting technology is generally adopted to fill the shield tail gap. Grouting slurry commonly used in the construction of the shield tunnel at present can be roughly divided into two types, namely single-liquid grouting material and double-liquid grouting material. The double slurry is prepared by pumping A, B slurry through two pipelines, mixing the slurry in the tail grouting holes and injecting the slurry into the tail clearance. Slurry A is a cement-based material, and slurry B is usually a water glass-based material as a hardener. In actual shield tunnel engineering, the proportion of the double liquid is properly adjusted, so that the stone body has higher early strength, and the shield tail is effectively filled, and the ground surface subsidence is controlled. Therefore, the double-liquid slurry is often applied to the water-rich environment of tunnel shield construction, synchronous grouting of soft soil layers and secondary grouting of conventional shield construction.
At present, the traditional A slurry (namely A slurry) mixing and transportation construction technology mainly comprises the following steps: the slurry A is mixed and produced at a ground mixing station, the slurry A is transported into a tunnel by adopting a mortar truck to perform grouting, wherein the mixing and transporting process of the slurry A needs the construction of a working well initiated by a shield method to an open excavation section on the ground, and the slurry A enters the tunnel through road transportation (horizontal transportation) after being mixed at the ground mixing station, so that the subsequent grouting can be performed, and the following defects easily exist:
1. the mixed slurry A has long pipeline transportation distance, has the problems of low construction work efficiency and high pipeline failure rate along with the tunneling of a shield machine, and is easy to reduce the homogeneity of cement-based materials due to long-distance pipeline transportation;
2. if the open excavation section from the starting working well to the ground is not constructed, the mortar truck for transporting the slurry A cannot enter the tunnel through the existing road, and the well mixed slurry A needs to be vertically transported up and down to enter the tunnel through the shield starting working well, so that the construction amount is large, and the cost is high.
Therefore, it is necessary to design a stirring system capable of moving on-vehicle for synchronous double-liquid grouting in a shield tunnel.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing an improved slurry stirring system for synchronous double-liquid grouting of a shield tunnel.
In order to solve the technical problems, the invention adopts the following technical scheme:
the slurry stirring system for synchronous double-liquid grouting of the shield tunnel is positioned in the shield tunnel and synchronously moves with the shield machine, and comprises a tail trolley synchronously connected with the shield machine; an A slurry stirring unit and an A slurry powder supply unit which are arranged on the tail trolley; a slurry supply unit; and a mixing unit for mixing A, B slurry.
Preferably, the tail trolley comprises a bearing platform and a frame arranged on the bearing platform, wherein the powder supply unit is arranged at the top of the frame, and the slurry A stirring unit is arranged on the bearing platform. The device is reasonably arranged in a narrow tunnel space, the utilization rate of the space is improved, and the mixing system can be carried on the same vehicle and the construction efficiency is improved.
Specifically, the powder supply unit comprises a bentonite tank, a cement powder tank and a plurality of powder conveying parts, wherein the powder conveying parts are correspondingly connected with the bentonite tank and the cement powder tank one by one.
Furthermore, the bentonite tank and the cement powder tank are both horizontal storage tanks, and can be used for grouting amount required by 11-13 rings of the shield tunneling machine. The storage design is reasonable, and the construction requirement is met.
Preferably, the powder supply unit further comprises a dust collection tank communicated with the bentonite tank and the cement powder tank respectively, wherein the dust collection tank is used for collecting dust generated by cement and bentonite feeding. The arrangement reduces dust overflow during charging and improves the construction environment quality; meanwhile, the collected powder can be separated for use, so that the waste is reduced, and the cost is lowered.
Specifically, the dust collection tank is arranged between the bentonite tank and the cement powder tank and is communicated to the tops of the inner cavities of the bentonite tank and the cement powder tank through pipelines respectively. The dust collection effect of the dust collection tank on the cement powder tank and the bentonite tank is improved by the arrangement.
Preferably, the slurry stirring unit A comprises a first stirring tank for stirring bentonite liquid and a second stirring tank which is communicated with the first stirring tank and used for stirring the slurry A, wherein the bentonite tank is communicated into the first stirring tank through a corresponding powder conveying part, the stirred bentonite liquid is conveyed into the second stirring tank, and the cement powder tank is communicated into the second stirring tank through a corresponding powder conveying part.
Specifically, the first stirring tank is a high-speed stirring tank, the slurry A stirring unit further comprises a third stirring tank communicated with the first stirring tank, wherein the third stirring tank is a low-speed stirring tank and is used for pre-stirring operation of bentonite liquid; the second agitator tank is the high-speed agitator tank, and A thick liquid stirring unit still includes the fourth agitator tank that is linked together with the second agitator tank, and wherein the fourth agitator tank is the low-speed agitator tank to be used for the ready-mix operation of A thick liquid. After the bentonite liquid and the slurry A are stirred, the bentonite liquid and the slurry A can be stored and premixed through the low-speed stirring tank, so that precipitation is avoided, and the homogeneity of the bentonite liquid and the slurry A is convenient to maintain.
Further, the second stirring tank and the fourth stirring tank form a group of A slurry stirring groups, and the A slurry stirring groups are two groups and are respectively arranged on two opposite sides of the tail trolley. By the arrangement, the grouting capacity is further improved, and running of the vehicle is not affected.
In addition, the stirring system further comprises a clear water supply unit, wherein the clear water supply unit comprises a clear water tank, a clear water pump and a monitoring module for detecting the liquid level of the clear water tank and supplementing water, and the clear water tank pumps clear water to the first stirring tank and the second stirring tank through the clear water pump respectively.
Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:
according to the invention, by additionally arranging a section of shield machine trolley and synchronously moving the pulping equipment of the slurry A along with the shield machine, the short-distance transportation of the slurry A is realized, the performance loss of the slurry A before being mixed with the slurry B is reduced, and the grouting quality is ensured; meanwhile, the construction quantity of the pipeline is greatly reduced, the labor intensity and the construction cost are reduced, and the construction efficiency is effectively improved.
Drawings
FIG. 1 is a schematic diagram of a slurry stirring system for synchronous double-liquid grouting of a shield tunnel;
FIG. 2 is a schematic left-hand view of FIG. 1 (without the first agitator tank);
FIG. 3 is a schematic top view of the powder supply unit of FIG. 1;
FIG. 4 is an enlarged schematic view of the first agitator tank of FIG. 1;
FIG. 5 is an enlarged schematic view of the second agitator tank of FIG. 1;
wherein: 1. a tail trolley; 10. a load-bearing platform; 11. a frame;
2. a powder supply unit; 20. a bentonite tank; 21. a cement powder tank; j. a support frame; 22. a powder conveying part; 23. a dust collection tank;
3. a slurry stirring unit; 31. a first stirring tank; 32. a second stirring tank; 33. a third stirring tank; 34. a fourth stirring tank; 35. an operating room.
Detailed Description
In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
As shown in fig. 1, a slurry stirring system for synchronous double-liquid grouting of a shield tunnel of the embodiment is positioned in the shield tunnel and synchronously moves with a shield machine, and the stirring system comprises a tail trolley 1 synchronously connected with the shield machine; an A slurry stirring unit 3 and an A slurry powder supply unit 3 which are arranged on the tail trolley 1; a slurry supply unit; and a mixing unit for mixing A, B slurry.
Specifically, the tail trolley 1 comprises a bearing platform 10 and a frame 11 arranged on the bearing platform 10, wherein the frame 11 is formed by splicing H-shaped steel and steel plates, and a working area with a square section is formed between the frame 11 and the bearing platform 10.
The powder supply unit 2 includes a bentonite tank 20, a cement powder tank 21, a stabilizer tank, a powder transporting member 22, and a dust collecting tank 23.
Specifically, bentonite tank 20 has a volume of 23m 3 The cement powder tank 21 adopts a horizontal storage tank with a volume of 80m 3 The horizontal storage tank of the (2) can be used for the shield machine to tunnel 12 rings. The storage is reasonable, and the construction requirement is met.
The bentonite tank 20 and the cement powder tank 21 are distributed at intervals side by side along the length direction of the tail trolley 1 and are arranged in the center of the top of the frame 11 through a support frame j, and a discharge hole is formed in the bottom of each of the bentonite tank 20 and the cement powder tank 21.
As shown in fig. 2 and 3, the bentonite tanks 20 are provided one by one, and the cement powder tanks 21 are provided two and side by side along the width direction of the carrying platform 10.
In this example, a dust collection tank 23 is provided between the bentonite tank 20 and the cement powder tank 21, and is used for collecting dust generated by cement and bentonite feeding. The arrangement reduces dust overflow during charging and improves the construction environment quality; meanwhile, the collected powder can be separated for use, so that the waste is reduced, and the cost is lowered.
Specifically, two dust collection tanks 23 are arranged side by side along the width direction of the bearing platform 10, and each dust collection tank 23 is respectively communicated to the tops of the inner cavities of the bentonite tank 20 and the cement powder tank 21 through pipelines. The dust collection effect of the dust collection tank on the cement powder tank and the bentonite tank is improved by the arrangement.
Meanwhile, the volume of each dust tank 23 is 6 m.
In this example, there are two stabilizer tanks, each of which has a volume of 0.5 m.
In this example, each powder conveying member 22 is a screw conveyor and is disposed at the discharge port of the bottoms of the bentonite tank 20 and the cement powder tank 21.
In this example, the slurry a stirring unit 3 includes a first stirring tank 31 for stirring the bentonite liquid, and a second stirring tank 32 which is communicated with the first stirring tank 31 and is used for stirring the slurry a, wherein the bentonite tank 20 is communicated into the first stirring tank 31 through the corresponding powder conveying member 22, and the stirred bentonite liquid is conveyed from the first stirring tank 31 into the second stirring tank 32, and the cement powder tank 21 and the stabilizer tank are communicated into the second stirring tank 32 through the corresponding powder conveying member 22.
Specifically, the first and second agitation tanks 31 and 32 are installed on the carrying platform 10 and are correspondingly positioned below the bentonite tank 20 and the cement powder tank 21. The device is reasonably arranged in a narrow tunnel space, the utilization rate of the space is improved, and the mixing system can be carried on the same vehicle and the construction efficiency is improved.
As shown in fig. 4, the first stirring tank 31 adopts a high-speed stirring tank with a volume of 1.2m, and the present embodiment further comprises a third stirring tank 23 arranged below the first stirring tank 31 and communicated with the first stirring tank 31, wherein the third stirring tank 23 adopts a low-speed stirring tank with a volume of 3.2m, and is used for the pre-stirring operation of bentonite liquid. After the bentonite liquid is stirred, the bentonite liquid is stored and premixed through the low-speed stirring tank, so that precipitation is avoided, and the homogeneity of the bentonite liquid is convenient to maintain.
As shown in conjunction with fig. 5, the second stirring tank 32 employs a high-speed stirring tank having a volume of 1.2m, and the present embodiment further includes a fourth stirring tank 24 disposed below the second stirring tank 32 and in communication with the second stirring tank 32, wherein the fourth stirring tank 24 employs a low-speed stirring tank having a volume of 3.2m and is used for a pre-stirring operation of the a slurry. After the slurry A is stirred, the slurry A is stored and premixed through the low-speed stirring tank, so that precipitation is avoided, the homogeneity of the slurry A is conveniently maintained, and the performance of the slurry A during grouting is ensured.
In particular, the second agitator tank 32 and the fourth agitator tank 24 form a set of a slurry agitation sets, wherein the a slurry agitation sets are two sets and are disposed on opposite sides of the load-bearing platform 10, respectively. By the arrangement, the grouting capacity is further improved, and running of the vehicle is not affected.
In this example, the embodiment further includes a clean water supply unit for providing the slurry-making water for the first stirring tank 31 and the second stirring tank 32, where the clean water supply unit includes a clean water tank, a clean water pump, and a monitoring module for detecting the liquid level of the clean water tank and replenishing water, and the clean water tank pumps clean water to the first stirring tank and the second stirring tank through the clean water pump.
Specifically, the automatic water supply amount of the clean water supply unit needs to reach 1000L/min.
Meanwhile, the slurry stirring unit 3A further comprises two operation chambers 35, wherein the two operation chambers 35 are arranged on two opposite sides of the bearing platform 10, and the two operation chambers 35 are correspondingly connected with the two slurry stirring groups A one by one, and the main functions of the slurry stirring unit A are that when the slurry preparation operation is carried out, the manufacture of bentonite liquid, the transfer of the bentonite liquid, the mixing of a stabilizing agent and the bentonite liquid after mixing and stirring with water, the mixing of cement powder and a mixture and the like are realized through panel operation, so that the slurry preparation operation is completed.
Specifically, each of the operation chambers 35 is mainly composed of a power box, a mortar operation panel, a pump operation panel, and an a-slurry supply panel, and two stabilizer tanks are respectively placed in the two operation chambers 35.
In this example, the B slurry supply unit includes a 30m thick B slurry storage tank provided on the tail carriage 1, and a hose pump for pumping the B slurry.
Of course, the B slurry storage tank may also be located at the surface and pump the B slurry to the underground storage tank by a hose pump.
In addition, the mixing unit is arranged at the tail of the shield, and the slurry A and the slurry B are mixed at the tail of the shield according to the set mixing ratio, so that the mixed slurry reaches a gel state before entering the stratum.
In summary, the implementation procedure of this embodiment is as follows:
1. the sizes of the bentonite tank 20 and the cement powder tank 21 are designed according to the space of the tail trolley 1, and reasonable layout and installation are carried out;
2. stirring bentonite liquid, namely pumping clear water into a first stirring tank 31 by a clear water pump, conveying bentonite into the first stirring tank 31 from a bentonite tank 20 by a powder conveying part 22, starting the first stirring tank 31 to fully stir and prepare bentonite liquid, and conveying the stirred bentonite liquid into a third stirring tank 23 for pre-stirring;
3. the slurry A is stirred, firstly, the operation room 35 controls the stabilizer to be input into the second stirring tank 32 from the stabilizer tank, secondly, the clean water pump pumps clean water into the second stirring tank 32, after the second stirring tank 32 is started to carry out high-speed mixing and stirring, bentonite liquid is conveyed into the second stirring tank 32 from the third stirring tank 23 through the conveying pump to carry out mixing and stirring, finally, the powder conveying component 22 conveys cement powder into the second stirring tank 32 to fully stir and manufacture the slurry A, at the moment, the slurry A is input into the fourth stirring tank 24, namely, the pulping operation is finished, the slurry A formed by stirring is conveyed and stored through the hose pump, and along with the movement of the shield tunneling machine, the slurry A and the slurry B are mixed at the tail of a shield, and the grouting operation is synchronously carried out.
In summary, the present implementation has the following advantages:
1. by additionally arranging a trolley on the shield machine and synchronously moving along with the shield machine, the short-distance transportation of the slurry A and the synchronous grouting are realized, so that the slurry A can be transported from the ground to the shield machine without using a mortar trolley, thereby reducing construction risks, reducing material transportation cross operation, reducing performance loss of the slurry A and ensuring grouting quality;
2. the construction quantity of the transportation pipeline is greatly reduced, the labor intensity and the construction cost are reduced, and the construction efficiency is effectively improved;
3. the floor mixing station is not required to be constructed, the construction occupation amount is reduced, and the floor mixing station is flexibly applicable to different construction environments.
The present invention has been described in detail with the purpose of enabling those skilled in the art to understand the contents of the present invention and to implement the same, but not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (4)
1. The utility model provides a shield constructs synchronous two thick liquid slurry mixing system that liquid slip casting was used in method tunnel which characterized in that: the stirring system is positioned in the shield tunnel and synchronously moves with the shield machine, and comprises a tail trolley synchronously connected with the shield machine; an A slurry stirring unit and an A slurry powder supply unit which are arranged on the tail trolley; a slurry supply unit; and a mixing unit for mixing A, B slurry;
the tail trolley comprises a bearing platform and a frame arranged on the bearing platform, wherein the powder supply unit is arranged at the top of the frame, and the slurry A stirring unit is arranged on the bearing platform;
the powder supply unit comprises a bentonite tank, a cement powder tank and a plurality of powder conveying parts, wherein the powder conveying parts are correspondingly connected with the bentonite tank and the cement powder tank one by one;
the bentonite tank and the cement powder tank are both horizontal storage tanks and can be used for grouting amount required by 11-13 rings of shield tunneling machine tunneling;
the powder supply unit further comprises a dust collection tank which is respectively communicated with the bentonite tank and the cement powder tank, wherein the dust collection tank is used for collecting dust generated by cement and bentonite feeding;
the dust collection tank is arranged between the bentonite tank and the cement powder tank and is respectively communicated to the tops of the inner cavities of the bentonite tank and the cement powder tank through pipelines;
the slurry A stirring unit comprises a first stirring tank and a second stirring tank, wherein the first stirring tank is used for stirring bentonite liquid, the second stirring tank is communicated with the first stirring tank and used for stirring slurry A, the bentonite tank is communicated into the first stirring tank through a corresponding powder conveying component, the stirred bentonite liquid is conveyed into the second stirring tank, and the cement powder tank is communicated into the second stirring tank through a corresponding powder conveying component;
the mixing unit is arranged at the tail of the shield, and the slurry A and the slurry B are mixed at the tail of the shield according to the set mixing ratio, so that the mixed slurry reaches a gelatinization state before entering the stratum.
2. The slurry stirring system for synchronous double-liquid grouting of a shield tunnel according to claim 1, wherein the slurry stirring system comprises the following components: the first stirring tank is a high-speed stirring tank, the slurry A stirring unit further comprises a third stirring tank communicated with the first stirring tank, wherein the third stirring tank is a low-speed stirring tank and is used for pre-stirring operation of bentonite liquid; the second stirring tank is a high-speed stirring tank, and the slurry A stirring unit further comprises a fourth stirring tank communicated with the second stirring tank, wherein the fourth stirring tank is a low-speed stirring tank and is used for pre-stirring operation of slurry A.
3. The slurry stirring system for synchronous double-liquid grouting of a shield tunnel according to claim 2, wherein: the second stirring tank and the fourth stirring tank form a group of A slurry stirring groups, and the A slurry stirring groups are two groups and are respectively arranged on two opposite sides of the tail trolley.
4. The slurry stirring system for synchronous double-liquid grouting of a shield tunnel according to claim 1, wherein the slurry stirring system comprises the following components: the stirring system further comprises a clear water supply unit, wherein the clear water supply unit comprises a clear water tank, a clear water pump and a monitoring module for detecting the liquid level of the clear water tank and supplementing water, and the clear water tank pumps clear water to the first stirring tank and the second stirring tank through the clear water pump respectively.
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| CN202111444686.XA CN114352316B (en) | 2021-11-30 | 2021-11-30 | Slurry stirring system for synchronous double-liquid grouting of shield tunnel |
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| CN202111444686.XA CN114352316B (en) | 2021-11-30 | 2021-11-30 | Slurry stirring system for synchronous double-liquid grouting of shield tunnel |
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| JP2002307425A (en) * | 2001-04-09 | 2002-10-23 | Ohbayashi Corp | Method for manufacture of back filling grout material |
| CN104074530A (en) * | 2014-06-17 | 2014-10-01 | 中铁十五局集团有限公司 | Shield synchronous grouting construction method and construction material |
| CN205206839U (en) * | 2015-11-16 | 2016-05-04 | 中铁十六局集团北京轨道交通工程建设有限公司 | A semi -automatic slip casting platform truck system that is used for shield to construct slip casting of construction secondary |
| CN105673044A (en) * | 2015-11-16 | 2016-06-15 | 中铁十六局集团北京轨道交通工程建设有限公司 | Construction method and system for improving secondary grouting quality used for shield construction |
| CN106948828A (en) * | 2017-05-07 | 2017-07-14 | 中铁十八局集团有限公司 | A kind of device that secondary grouting is carried out using shield synchronization slip casting equipment |
| CN209277877U (en) * | 2018-08-01 | 2019-08-20 | 广东华隧建设集团股份有限公司 | A kind of shield machine list dual slurry combined type synchronous grouting system |
| CN209908518U (en) * | 2019-03-31 | 2020-01-07 | 北京市政建设集团有限责任公司 | Double-fluid synchronous grouting system for shield engineering |
| CN113818890A (en) * | 2021-10-20 | 2021-12-21 | 湖南中天凿岩科技有限公司 | Double-slurry storage, pulping and conveying integrated system in tunnel for shield construction and using method |
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