CN114352316A - Slurry mixing system for synchronous double-liquid grouting of shield tunnel - Google Patents
Slurry mixing system for synchronous double-liquid grouting of shield tunnel Download PDFInfo
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- CN114352316A CN114352316A CN202111444686.XA CN202111444686A CN114352316A CN 114352316 A CN114352316 A CN 114352316A CN 202111444686 A CN202111444686 A CN 202111444686A CN 114352316 A CN114352316 A CN 114352316A
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- 239000002002 slurry Substances 0.000 title claims abstract description 97
- 238000002156 mixing Methods 0.000 title claims abstract description 50
- 239000007788 liquid Substances 0.000 title claims abstract description 41
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 22
- 238000003756 stirring Methods 0.000 claims abstract description 97
- 239000000843 powder Substances 0.000 claims abstract description 60
- 229910000278 bentonite Inorganic materials 0.000 claims description 52
- 239000000440 bentonite Substances 0.000 claims description 52
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 37
- 239000004568 cement Substances 0.000 claims description 35
- 239000000428 dust Substances 0.000 claims description 21
- 239000012530 fluid Substances 0.000 claims description 15
- 238000003860 storage Methods 0.000 claims description 8
- 230000005641 tunneling Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000007569 slipcasting Methods 0.000 claims description 4
- 238000009775 high-speed stirring Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 25
- 238000004537 pulping Methods 0.000 abstract description 4
- 239000003381 stabilizer Substances 0.000 description 8
- 238000013019 agitation Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000011268 mixed slurry Substances 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 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
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000013049 sediment Substances 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
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Abstract
The invention discloses a slurry mixing system for synchronous double-liquid grouting of a shield tunnel, which is positioned in the shield tunnel and moves synchronously with a shield machine, and comprises a tail trolley synchronously connected with the shield machine; the slurry A stirring unit and the powder supply unit of the slurry A are arranged on the tail trolley; b, a slurry supply unit; and a mixing unit for mixing the A, B slurry. According to the invention, a section of shield machine trolley is additionally arranged, and the pulping equipment of the slurry A moves synchronously along with the shield machine, so that 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 amount 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 a shield is larger than the outer diameter of a lining segment, and a shield shell has certain thickness, in addition, the phenomena of overexcavation and the like exist in the tunneling process, after a shield tail is separated from the segment, an annular gap can appear between the segment and a stratum, and the shield tail gap is usually filled by adopting a synchronous grouting technology in the actual shield tunnel engineering. The grouting slurry commonly used in shield tunnel construction at present can be roughly divided into two types, namely a single-fluid grouting material and a double-fluid grouting material. The double-fluid slurry is prepared by pumping A, B slurry from two pipelines, mixing in the slurry injection hole of the shield tail and injecting the slurry into the gap of the shield tail. The A slurry is a cement-based material, and the B slurry is usually a water glass material as a hardening agent. In the actual shield tunnel engineering, the proportion of the biliquid is properly adjusted, so that the stone body has higher early strength, the shield tail is effectively filled, and the ground surface settlement is controlled. Therefore, the double-fluid slurry is often applied to the water-rich environment of tunnel shield construction, the synchronous grouting of soft soil layers and the secondary grouting of conventional shield construction.
At present, the traditional mixing and transportation construction technology of the slurry A (namely the slurry A) mainly comprises the following steps: a thick liquid mixes production at ground stirring station, adopts the mortar car to transport thick liquid and carries out the slip casting in tunnel, and wherein the transportation of mixing of A thick liquid needs shield method tunnel initial working well to the open cut section on ground to be under construction to accomplish, and A thick liquid mixes the station on ground and mixes the back of accomplishing, gets into the tunnel through road transport (horizontal transport), just can carry out follow-up slip casting, exists following defect easily:
1. the mixed slurry A has long pipeline transportation distance, has the problems of low construction efficiency and high pipeline failure rate along with the tunneling of a shield tunneling machine, and easily reduces the homogeneity of a cement-based material due to long-distance pipeline transportation;
2. if the open cut section from the starting working well to the ground is not constructed, the mortar vehicle for conveying the slurry A can not enter the tunnel through the existing road, and the mixed slurry A needs to be vertically conveyed to enter the tunnel through the shield starting working well, so that the construction amount is large, and the cost is high.
Therefore, a mixing system which can move along with a vehicle and is used for synchronous double-liquid grouting in a shield tunnel needs to be designed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an improved slurry mixing system for synchronous double-liquid grouting of a shield tunnel.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a slurry mixing system for synchronous double-liquid grouting of a shield tunnel is positioned in the shield tunnel and moves synchronously with a shield machine, and comprises a tail trolley synchronously connected with the shield machine; the slurry A stirring unit and the powder supply unit of the slurry A are arranged on the tail trolley; b, a slurry supply unit; and a mixing unit for mixing the 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 A slurry stirring unit is arranged on the bearing platform. The mixing system is arranged in a narrow tunnel space, the utilization rate of the space is improved, the mixing system can move along with a 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 components, wherein the powder conveying components 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 the shield tunneling machine to tunnel 11-13 rings of required grouting amount. Set up like this, reserves reasonable in design satisfies the construction demand.
Preferably, the powder supply unit further comprises a dust collection tank respectively communicated with the bentonite tank and the cement powder tank, wherein the dust collection tank is used for collecting dust generated by feeding cement and bentonite. By the arrangement, the dust overflow during charging is reduced, and the construction environment quality is improved; meanwhile, the collected powder can be separated for use, so that the waste is reduced, and the cost is reduced.
Specifically, the dust collecting tank is arranged between the bentonite tank and the cement powder tank and is communicated to the tops of inner cavities of the bentonite tank and the cement powder tank through pipelines respectively. Set up like this, improve the dust collecting effect of dust collecting tank to cement powder jar and bentonite jar.
Preferably, the A slurry 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 is used for stirring the A slurry, 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.
Specifically, the first stirring tank is a high-speed stirring tank, and the slurry stirring unit A 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 premixing operation of bentonite liquid; the second stirring tank is a high-speed stirring tank, and the A slurry 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 premixing operation of the A slurry. Set up like this, bentonite liquid and A thick liquid stir the completion back, can store and the ready-mixed through low-speed agitator tank, avoid taking place to deposit, be convenient for keep the homogeneity of bentonite liquid and A thick liquid.
Furthermore, the second stirring tank and the fourth stirring tank form a group of A slurry stirring groups, and the two groups of A slurry stirring groups are respectively arranged on two opposite sides of the tail trolley. By the arrangement, the slurry making capacity is further increased, and the running of the vehicle is not influenced.
In addition, the mixing system further comprises a clear water supply unit, 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, a section of shield machine trolley is additionally arranged, and the pulping equipment of the slurry A moves synchronously along with the shield machine, so that 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 amount 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 structural diagram of a slurry mixing system for synchronous double-fluid grouting in a shield tunnel according to the present invention;
FIG. 2 is a schematic left side 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 component; 23. a dust collection tank;
3. a slurry stirring unit; 31. a first agitator tank; 32. a second stirred tank; 33. a third stirred tank; 34. a fourth agitator tank; 35. and an operation chamber.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" 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 as used herein are for illustrative purposes only and do not denote a unique embodiment.
As shown in fig. 1, the slurry mixing system for synchronous double-fluid grouting of a shield tunnel according to the present embodiment is located in a shield tunnel and moves synchronously with a shield machine, and the mixing system includes a tail trolley 1 synchronously connected with the shield machine; a slurry A stirring unit 3 and a powder supply unit 3 of slurry A which are arranged on the tail trolley 1; b, a slurry supply unit; and a mixing unit for mixing the A, B slurry.
Specifically, the tail trolley 1 comprises a bearing platform 10 and a frame 11 installed on the bearing platform 10, wherein the frame 11 is formed by splicing H-shaped steel and steel plates, and an operation area with a square cross 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 conveying member 22, and a dust tank 23.
Specifically, the bentonite tank 20 has a volume of 23m3The cement powder tank 21 adopts a horizontal storage tank with the volume of 80m3The horizontal storage tank can be used for the shield tunneling machine to tunnel 12 rings. The arrangement is reasonable in storage amount, and construction requirements are met.
The bentonite jar 20 and the cement powder jar 21 are distributed along the length direction of the tail trolley 1 at intervals side by side and are installed at the center of the top of the frame 11 through a support frame j, and the bentonite jar 20 and the cement powder jar 21 are respectively provided with a discharge hole from the bottom.
Referring to fig. 2 and 3, one bentonite tank 20 is provided, and two cement powder tanks 21 are provided and arranged side by side along the width direction of the loading platform 10.
In this example, the 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 feeding cement and bentonite. By the arrangement, the dust overflow during charging is reduced, and the construction environment quality is improved; meanwhile, the collected powder can be separated for use, so that the waste is reduced, and the cost is reduced.
Specifically, two dust tanks 23 are arranged side by side along the width direction of the loading platform 10, and each dust tank 23 is communicated to the tops of the inner cavities of the bentonite tank 20 and the cement powder tank 21 through pipelines. Set up like this, improve the dust collecting effect of dust collecting tank to cement powder jar and bentonite jar.
Meanwhile, each dust collection tank 23 is thin-walled and 6m in volume.
In this example, there were two stabilizer tanks, where each stabilizer tank had a volume of 0.5m ethanol.
In this example, each powder conveying member 22 is a screw conveyor and is disposed at the discharge port at the bottom of the bentonite tank 20 and the cement powder tank 21.
In this example, the a slurry stirring unit 3 includes a first stirring tank 31 for stirring the bentonite liquid, and a second stirring tank 32 communicating with the first stirring tank 31 for stirring the a slurry, wherein the bentonite tank 20 communicates with the first stirring tank 31 through a corresponding powder conveying member 22, the stirred bentonite liquid is conveyed from the first stirring tank 31 to the second stirring tank 32, and the cement powder tank 21 and the stabilizer tank communicate with the second stirring tank 32 through a corresponding powder conveying member 22.
Specifically, the first agitation tank 31 and the second agitation tank 32 are installed on the bearing platform 10 and are correspondingly located below the bentonite tank 20 and the cement powder tank 21. The mixing system is arranged in a narrow tunnel space, the utilization rate of the space is improved, the mixing system can move along with a vehicle, and the construction efficiency is improved.
Referring to fig. 4, first agitator tank 31 adopts the high-speed agitator tank that volume is 1.2m and educes, and this embodiment still includes third agitator tank 23 that sets up in first agitator tank 31 below and be linked together with first agitator tank 31, and wherein third agitator tank 23 adopts the low-speed agitator tank that the volume is 3.2m and educe the year for the ready-mixing operation of bentonite liquid. Set up like this, the bentonite liquid stirring is accomplished the back, stores and the premixing through low-speed agitator tank, avoids taking place to deposit, is convenient for keep the homogeneity of bentonite liquid.
Referring to fig. 5, second drum 32 is a high speed drum with a capacity of 1.2m, and the present embodiment further includes a fourth drum 24 disposed below second drum 32 and communicating with second drum 32, wherein fourth drum 24 is a low speed drum with a capacity of 3.2m for pre-mixing of slurry a. Set up like this, the A thick liquid stirring is accomplished the back, stores and the premixing through low-speed agitator tank, avoids taking place the sediment, is convenient for keep the homogeneity of A thick liquid, the performance of A thick liquid when guaranteeing the slip casting.
Specifically, the second agitation tank 32 and the fourth agitation tank 24 constitute a group a slurry agitation group, wherein the group a slurry agitation group includes two groups and is respectively disposed on opposite sides of the carrying platform 10. By the arrangement, the slurry making capacity is further increased, and the running of the vehicle is not influenced.
In this embodiment, the clean water supply unit further includes a clean water supply unit for providing the water for slurry making in the first stirring tank 31 and the second stirring tank 32, 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 supplementing water, wherein the clean water tank pumps clean water to the first stirring tank and the second stirring tank through the clean water pump respectively.
Specifically, the automatic water supply amount of the clear water supply unit needs to reach 1000L/min.
Meanwhile, the A slurry stirring unit 3 further comprises two operation chambers 35, wherein the two operation chambers 35 are arranged on two opposite sides of the bearing platform 10, the two operation chambers 35 are correspondingly connected with the two A slurry stirring groups one by one, and the main functions of the A slurry stirring unit are to realize the preparation of bentonite liquid, the transfer of the bentonite liquid, the mixing of a stabilizer and water after mixing and stirring, the mixing of cement powder and a mixture and the like through panel operation during the pulping operation, so that the pulping operation is completed.
Specifically, each operation chamber 35 is mainly composed of a power supply box, a mortar operation panel, a pump operation panel, and a slurry supply panel a, and two stabilizer tanks are respectively placed in the two operation chambers 35.
In this example, the B slurry supply unit comprises a B slurry storage tank arranged at 30m top on the tail trolley 1 and a hose pump for pumping the B slurry.
Of course, the B slurry storage tank may be located at the surface and the B slurry is pumped to the underground storage tank by a hose pump.
In addition, the mixing unit is arranged at the shield tail, and the slurry A and the slurry B are mixed at the shield tail according to the set mixing ratio, so that the mixed slurry reaches a gelled state before entering the stratum.
In summary, the implementation process of this embodiment is as follows:
1. designing the sizes of the bentonite tank 20 and the cement powder tank 21 according to the space of the tail trolley 1, and carrying out reasonable layout and installation;
2. stirring bentonite liquid, firstly pumping clear water into a first stirring tank 31 by a clear water pump, secondly conveying bentonite into the first stirring tank 31 from a bentonite tank 20 by a powder conveying component 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 to perform pre-stirring operation;
3. mixing the slurry A, firstly controlling the stabilizer from the stabilizer tank to be input into the second stirring tank 32 by the operation chamber 35, secondly pumping clear water into the second stirring tank 32 by the clear water pump, starting the second stirring tank 32 to perform high-speed mixing and stirring, then conveying the bentonite liquid from the third stirring tank 23 into the second stirring tank 32 through the conveying pump to perform mixing and stirring, finally conveying cement powder into the second stirring tank 32 by the powder conveying part 22 to perform full stirring and manufacture the slurry A, then inputting the slurry A into the fourth stirring tank 24, namely completing the slurry preparation operation, conveying and storing the mixed slurry A through the hose pump, and mixing the slurry A and the slurry B at the tail end along with the movement of the shield machine, and synchronously performing the slurry injection operation.
In summary, the present implementation has the following advantages:
1. the trolley is additionally arranged on the shield machine and synchronously moves along with the shield machine, so that short-distance transportation of the slurry A is realized, and synchronous grouting is implemented, and therefore the slurry A can be conveyed from the ground to the shield machine without a mortar vehicle, so that the construction risk is reduced, the material transportation cross operation is reduced, the performance loss of the slurry A is reduced, and the grouting quality is ensured;
2. the construction amount of the conveying pipeline is greatly reduced, the labor intensity and the construction cost are reduced, and the construction efficiency is effectively improved;
3. and a ground mixing station is not required to be built, so that the occupied construction area is reduced, and the method is flexibly suitable for different construction environments.
The present invention has been described in detail in order to enable those skilled in the art to understand the invention and to practice it, and it is not intended to limit the scope of the invention, and all equivalent changes and modifications made according to the spirit of the present invention should be covered by the present invention.
Claims (10)
1. The utility model provides a system is mixed to thick liquid that synchronous biliquid slip casting of shield method tunnel was used which characterized in that: the mixing system is positioned in the shield tunnel and moves synchronously with the shield machine, and comprises a tail trolley synchronously connected with the shield machine; the slurry A stirring unit and the powder supply unit of the slurry A are arranged on the tail trolley; b, a slurry supply unit; and a mixing unit for mixing the A, B slurry.
2. The system for mixing slurry for synchronous double-fluid grouting of the shield tunnel according to claim 1, characterized in that: 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.
3. The system for mixing slurry for synchronous double-fluid grouting of the shield tunnel according to claim 2, characterized in that: the powder supply unit comprises a bentonite tank, a cement powder tank and a plurality of powder conveying components, wherein the powder conveying components are correspondingly connected with the bentonite tank and the cement powder tank one by one.
4. The system for mixing slurry for synchronous double-fluid grouting of the shield tunnel according to claim 3, characterized in that: the bentonite tank and the cement powder tank are both horizontal storage tanks and can be used for the shield tunneling machine to tunnel 11-13 rings of required grouting amount.
5. The system for mixing slurry for synchronous double-fluid grouting of the shield tunnel according to claim 3, characterized in that: the powder supply unit also comprises a dust collecting tank which is respectively communicated with the bentonite tank and the cement powder tank, wherein the dust collecting tank is used for collecting dust generated by feeding cement and bentonite.
6. The system for mixing slurry for synchronous double-fluid grouting of the shield tunnel according to claim 5, characterized in that: the dust collecting 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.
7. The system for mixing slurry for synchronous double-fluid grouting of the shield tunnel according to claim 3, characterized in that: the slurry A stirring unit comprises a first stirring tank and a second stirring tank, the first stirring tank is used for stirring bentonite liquid, the second stirring tank is communicated with the first stirring tank and is used for stirring slurry A, the bentonite tank is communicated to the first stirring tank through the corresponding powder conveying parts, the stirred bentonite liquid is conveyed to the second stirring tank, and the cement powder tank is communicated to the second stirring tank through the corresponding powder conveying parts.
8. The system for mixing slurry for synchronous double-fluid grouting of the shield tunnel according to claim 7, characterized in that: the first stirring tank is a high-speed stirring tank, the slurry stirring unit A 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 premixing bentonite liquid; the second agitator tank is a high-speed agitator tank, the A slurry stirring unit further comprises a fourth agitator tank communicated with the second agitator tank, wherein the fourth agitator tank is a low-speed agitator tank and is used for premixing operation of the A slurry.
9. The system for mixing slurry for synchronous double-fluid grouting of the shield tunnel according to claim 7, characterized in that: the second agitator tank with the fourth agitator tank constitutes a set of A thick liquid stirring group, A thick liquid stirring group has two sets ofly and sets up respectively the relative both sides of afterbody platform truck.
10. The system for mixing slurry for synchronous double-fluid grouting of the shield tunnel according to claim 7, characterized in that: the mixing system further comprises a clean water supply unit, the clean water supply unit comprises a clean water tank, a clean water pump and a monitoring module used for detecting the liquid level of the clean water tank and supplementing water, and the clean water tank pumps clean water to the first stirring tank and the second stirring tank through the clean 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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| 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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