CN115324593A - Synchronous two liquid slip casting systems of super large diameter shield structure - Google Patents
Synchronous two liquid slip casting systems of super large diameter shield structure Download PDFInfo
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- CN115324593A CN115324593A CN202210980912.4A CN202210980912A CN115324593A CN 115324593 A CN115324593 A CN 115324593A CN 202210980912 A CN202210980912 A CN 202210980912A CN 115324593 A CN115324593 A CN 115324593A
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- 239000007788 liquid Substances 0.000 title claims abstract description 34
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 25
- 238000007569 slipcasting Methods 0.000 title claims description 23
- 238000011010 flushing procedure Methods 0.000 claims abstract description 95
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000002002 slurry Substances 0.000 claims description 101
- 239000010865 sewage Substances 0.000 claims description 27
- 238000004891 communication Methods 0.000 claims description 23
- 239000010720 hydraulic oil Substances 0.000 claims description 10
- 239000011268 mixed slurry Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 5
- 230000005641 tunneling Effects 0.000 claims description 5
- 239000008235 industrial water Substances 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000005406 washing Methods 0.000 description 14
- 239000011440 grout Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 238000007789 sealing Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 238000010793 Steam injection (oil industry) Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention provides a synchronous double-liquid grouting system for an oversized-diameter shield, which comprises a grouting unit with a plurality of grouting guns, a mixing unit with a mixer and a mixing pipeline, and a flushing unit with a first flushing pipeline and a flushing water tank.
Description
Technical Field
The invention belongs to the field of shield tunneling machine equipment, and particularly relates to a synchronous double-liquid grouting system of an ultra-large-diameter shield tunneling machine.
Background
In the shield process, grouting operation needs to be carried out synchronously, and the slurry is utilized to fill and compact the gap between the excavated geology and the segment, so that the surrounding rock soil is supported, the soil body is prevented from collapsing, and the surface subsidence is controlled.
The traditional synchronous grouting is mostly single-liquid grouting, the system has the advantages of simple structure, low cost and the like, the initial setting time of the grout is long, fixed-point coagulation is difficult, the grouting effect is poor, the grouting effect is optimized, a double-liquid synchronous grouting system appears in the market, the system can coagulate the mixed grout in a short time by mixing a coagulant in the grout, the system is more and more common in shield grouting with super-large diameter, the system needs to be provided with a complex pipeline for grout mixing, the structure is complex, particularly the position of a grouting gun is complex, and the valuable space in the width and thickness directions of the grouting gun can be occupied.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the ultra-large diameter shield synchronous double-liquid grouting system which has the functions of double-liquid grouting and backflow flushing, is simple in structure, good in grouting effect, not easy to block, small in workload of cleaning after blocking and convenient to operate.
In order to achieve the purpose, the invention adopts the technical scheme that the ultra-large diameter shield synchronous double-liquid grouting system is characterized by comprising the following steps:
the grouting unit comprises a plurality of grouting guns, the grouting guns are annularly distributed on a shield body of the shield machine, the extending direction of the grouting guns is parallel to the axial lead of the shield body, a first channel, a second channel and a communicating cavity which are parallel are arranged in the gun body of the grouting guns, one end part of the communicating cavity is communicated with the first channel and the second channel, the other end part of the communicating cavity penetrates through the end surface of the gun body close to the tail part of the shield body, a plug is inserted in the communicating cavity, a through flow channel is arranged on the plug and comprises a first flow channel and a second flow channel communicated with the first flow channel, the opening at one end part of the first flow channel faces the first channel, the opening at the other end part of the first flow channel forms a slurry outlet of the grouting guns, and the opening of the second flow channel far away from the first flow channel faces the second channel;
the mixing unit comprises a mixer and a mixing pipeline, the mixer is provided with a first pipe section, a second pipe section and a mixing pipe section, one end part of the first pipe section is communicated with a first slurry tank through a first slurry pipeline, the other end part of the first pipe section is communicated with the inlet end of the mixing pipe section, one end part of the second pipe section is communicated with a second slurry tank through a second slurry pipeline, the other end part of the second pipe section is communicated with the inlet end of the mixing pipe section, the outlet of the mixing pipe section is communicated with the inlet of the mixing pipeline, the mixing pipeline is inserted into the second channel, and the outlet of the mixing pipeline is in butt joint communication with the second channel;
the flushing unit comprises a first flushing pipeline and a flushing water tank, the first flushing pipeline is axially slidably inserted in the first flow channel along the second channel, the outer wall of the first flushing pipeline is connected with the inner wall of the first flow channel in a sealing mode, a seal head is arranged at the end, located in the first flow channel, of the first flushing pipeline, a lateral outlet is formed in the outer wall of the end, far away from the first flow channel, of the first flushing pipeline is communicated with the flushing water tank, the first flushing pipeline is provided with a first working position and a second working position, when the first flushing pipeline is located at the first working position, the seal head is located on one side, close to the first channel, of the first flow channel, the mixing pipeline is communicated with the second flow channel and the first flow channel, mixed slurry can be pumped out from the slurry outlet, when the first flushing pipeline is located at the second working position, the seal head is located on one side, close to the slurry outlet, the lateral outlet is communicated with the second flow channel, and the second flow channel can be refluxed to the inner portion of the mixing pipeline for flushing operation.
Preferably, a first one-way valve is arranged on the second pipe section, and the first one-way valve is used for preventing the flushing water from flowing back to the second slurry tank along the second pipe section.
Further preferably, the flushing unit further comprises a sewage conduit and a sewage tank, one end of the sewage conduit is communicated with the first slurry conduit, and the other end of the sewage conduit is communicated with the sewage tank.
It is further preferred that the flushing unit further comprises a second flushing pipe communicating with the first slurry pipe, the point of communication of the second flushing pipe with the first slurry pipe being located between the point of communication of the sewer pipe with the first slurry pipe and the first slurry tank and close to the point of communication of the first slurry pipe with the first slurry tank.
Further preferably, the end of the second flushing pipe, which is far away from the first slurry pipe, is communicated with the flushing water tank or the industrial water tank of the shield tunneling machine.
Further preferably, a second one-way valve is arranged on the first slurry pipeline, the second one-way valve is located on one side, close to the first slurry tank, of a communication point of the sewage pipeline and the first slurry pipeline, and the second one-way valve is used for preventing the flushing water from flowing back along the first slurry pipeline.
Preferably, the ultra-large diameter shield synchronous double-liquid grouting system further comprises a hydraulic oil cylinder, a cylinder body of the hydraulic oil cylinder is connected to the shield body, and a hydraulic rod of the hydraulic oil cylinder is hollow, so that the hydraulic rod forms the first flushing pipeline.
Preferably, the end of the first flushing pipe remote from the first flow passage communicates with the flushing water tank through a first hose.
Preferably, the outlet of the mixing tube segment is in communication with the inlet of the mixing conduit via a second hose.
Preferably, a rotatable stirring paddle is arranged in the first slurry tank.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1. have biliquid slip casting and backward flow flushing function, moreover, the steam injection is effectual, the backward flow is washed when referring to washing that sparge water and mixed thick liquid can not the grout outlet flow, can not cause to erode the thick liquid that just solidifies, simple structure embodies and need not to set up complicated pipeline and controlling means in the slip casting rifle, the space that occupies in slip casting rifle width direction and thickness direction is little, the slip casting is effectual to refer to biliquid slip casting can realize the fixed point and solidify, and do not influence the solidification effect of the thick liquid that has flowed from the grout outlet when washing.
2. Difficult jam, the work load of clearance after the jam is little, high durability and convenient operation, difficult jam indicates can be convenient switch between slip casting and washing mode, in time wash the operation to the slip casting pipeline, reduce the jam probability of slip casting pipeline, the work load of clearance after the jam is little, high durability and convenient operation mainly embodies, when the first flow path that is close to the grout outlet blocks up (most common jam point), the end cap is dismantled to the accessible and clears up, need not to dismantle the slip casting rifle, mixing tube and first washing tube way, the work load is few, high durability and convenient operation, when mixing tube blocks up, the end cap is dismantled to the accessible, mixing tube takes out from rifle body the place ahead or rear and maintains, need not to dismantle the slip casting rifle, the work load is few, maintain that the maintenance is simple and convenient.
Drawings
Fig. 1, fig. 2 and fig. 3 are schematic structural diagrams of a first embodiment of the invention, wherein fig. 1 is in a normal grouting mode, fig. 2 is in a mixing + first slurry pipeline front flushing mode, and fig. 3 is in a first slurry pipeline rear flushing mode.
Fig. 4 is an enlarged partial schematic view of the gun of fig. 1.
Fig. 5 is an enlarged partial schematic view of the gun of fig. 2.
FIG. 6 is an enlarged partial schematic view of the gun of FIG. 3
Fig. 7 is a schematic structural view of the second embodiment of the present invention, which is in a flushing mode.
Wherein: 11. grouting guns; 111. a gun body; 112. a first channel; 113. a second channel; 114. a communicating cavity; 115. a plug; 116. a flow passage is penetrated; 117. a first flow passage; 118. a second flow passage; 119. a pulp outlet; 21. a mixer; 211. a first tube section; 212. a second tube section; 213. a mixing pipe section; 214. a first slurry conduit; 215. a first slurry tank; 216. a second slurry conduit; 217. a second slurry tank; 218. a first check valve; 219. a second check valve; 220. a stirring paddle; 22. a mixing duct; 221. a second hose; 31. a first flushing line; 311. sealing the end; 312. a lateral outlet; 32. a flushing tank; 33. a sewage conduit; 34. a sewage tank; 35. a second flush line; 36. a first hose; 40. a hydraulic cylinder; 41. a cylinder body; 42. a hydraulic lever; 51. a first valve; 52. a second valve; 53. a third valve; 54. a fourth valve; 55. a fifth valve; 56. a first pump; 57. a second pump; 58. a third pump; 59. a sixth valve; 60. and a seventh valve.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the present invention more comprehensible to those skilled in the art, and will thus provide a clear and concise definition of the scope of the present invention.
Example one
As shown in fig. 1 to 4, the ultra-large diameter shield synchronous double-liquid grouting system provided by the invention comprises: the grouting unit comprises a plurality of grouting guns 11, the plurality of grouting guns 11 are annularly distributed on a shield body of a shield machine, the extension direction of the grouting guns 11 is parallel to the axial lead of the shield body, a first channel 112 and a second channel 113 which are parallel to each other and a communication cavity 114 are arranged in a gun body 111 of each grouting gun 11, one end part of each communication cavity 114 is communicated with the first channel 112 and the second channel 113, the other end part of each communication cavity 114 penetrates through the end surface, close to the tail part of the shield body, of the gun body 111, a plug 115 is inserted into each communication cavity 114, the plug 115 is detachably connected with the gun body 111, a penetrating flow channel 116 is arranged on the outer surface of the plug 115, each penetrating flow channel 116 comprises a first flow channel 117 and a second flow channel 118 communicated with the first flow channel 117, the opening at one end part of the first flow channel 117 faces the first channel 112, the opening at the other end part of the first flow channel 117 forms a slurry outlet 119 of each grouting gun 11, and the opening, far away from the first flow channel 117 faces the second flow channel 113; the mixing unit comprises a mixer 21 and a mixing pipeline 22, wherein the mixer 21 is provided with a first pipeline section 211, a second pipeline section 212 and a mixing pipeline section 213, one end part of the first pipeline section 211 is communicated with a first slurry tank 215 through a first slurry pipeline 214, the other end part of the first pipeline section 211 is communicated with the inlet end of the mixing pipeline section 213, one end part of the second pipeline section 212 is communicated with a second slurry tank 217 through a second slurry pipeline 216, the other end part of the second pipeline section 212 is communicated with the inlet end of the mixing pipeline section 213, the outlet of the mixing pipeline section 212 is communicated with the inlet of the mixing pipeline 22, the mixing pipeline 22 is inserted into the second channel 113, and the outlet of the mixing pipeline 22 is communicated (leak-proof) with the second flow channel 118; the flushing unit comprises a first flushing pipeline 31 and a flushing water tank 32, the first flushing pipeline 31 is inserted in the second channel 113, the end portion of the first flushing pipeline 31 extends into the first channel 117 and is axially slidably inserted in the first channel 117, the outer wall of the first flushing pipeline 31 is in sealing connection with the inner wall of the first channel 117 through a plurality of annular sealing rings, a sealing head 311 is arranged at the end portion of the first flushing pipeline 31 located in the first channel 117, a lateral outlet 312 is formed in the outer wall of the end portion, the end portion of the first flushing pipeline 31 far away from the first channel 117 is communicated with the flushing water tank 32, the first flushing pipeline 31 is provided with a first working position and a second working position, when the first flushing pipeline 31 is in the first working position, the sealing head 311 is located on the side, close to the first channel 112, of the first channel 117, the mixing pipeline 22 is communicated with the second channel 118 and the first channel 117, mixed slurry can be pumped out from the slurry outlet 119, when the first flushing pipeline 31 is in the second working position, the sealing head 311 is located on the side, close to the side of the slurry outlet 117, the lateral outlet 119 is communicated with the second flushing pipeline 118, and the mixed slurry can be pumped out along the first flushing pipeline 22 and the second flushing pipeline 31, so that the mixed slurry can be communicated with the lateral outlet 312 and the flushing pipeline 118 and the flushing pipeline 22.
The advantages of such an arrangement are:
1. have biliquid slip casting and backward flow washing function, moreover, the steam injection is effectual, the backward flow is washed when referring to washing the sparge water and is mixed the thick liquid and can not go out the thick liquid mouth and flow out, can not cause the scouring to the thick liquid that just solidifies, simple structure embodies and need not to set up complicated pipeline and controlling means in the slip casting rifle, the space that occupies at slip casting rifle width direction and thickness direction is little, the slip casting is effectual to refer to biliquid slip casting can realize the fixed point and solidify, and do not influence the solidification effect of the thick liquid that has flowed out from the grout mouth when washing.
2. Difficult jam, the work load of clearance after blockking up is little, high durability and convenient operation, difficult jam indicates can be convenient switch between slip casting and washing mode, in time wash the operation to the slip casting pipeline, reduce the jam probability of slip casting pipeline, the work load of clearance after blockking up is little, high durability and convenient operation mainly embodies, when the first flow path that is close to the grout outlet blocks up (most common jam point), the end cap is dismantled to the accessible and clears up, need not to dismantle the slip casting rifle, mixing tube and first washing tube way, the work load is few, high durability and convenient operation, when mixing tube blocks up, the end cap is dismantled to the accessible, mixing tube takes out from rifle body the place ahead or rear and maintains, need not to dismantle the slip casting rifle, the work load is few, maintain the simple and convenient convenience of maintenance and repair, the operation is simple, the end cap is dismantled
3. The grout outlet is wrapped by the plug in the radial direction, is high in strength, is not easy to deform when extruded, does not influence the grouting effect, can be changed by replacing the plug even if deformation occurs, does not need to disassemble a grouting gun for correction, and is small in workload and convenient to operate.
In this embodiment, a first check valve 218 is disposed on the second pipe section 212, and the first check valve 218 is used to prevent the flushing water from flowing back to the second slurry tank 217 along the second pipe section 212; the flushing unit further comprises a sewage pipe 33, a sewage tank 34 and a second flushing pipe 35, one end of the sewage pipe 33 is communicated with the first slurry pipe 214, the other end of the sewage pipe 33 is communicated with the sewage tank 34, the second flushing pipe 35 is communicated with the first slurry pipe 214, a communication point A of the second flushing pipe 35 and the first slurry pipe 214 is located between a communication point B of the sewage pipe 33 and the first slurry pipe 214 and a communication point C of the first slurry pipe 214 and the first slurry tank 215 and close to the communication point C of the first slurry pipe 214 and the first slurry tank 215, and an end of the second flushing pipe 35, far away from the first slurry pipe 214, is communicated with an industrial water tank of the shield tunneling machine.
Certainly, the shield synchronous double-fluid grouting system with the ultra-large diameter inevitably includes valves and pumps arranged on the pipelines, as shown in fig. 1 to 3, a first valve 51 is arranged at a communication point C between the first slurry pipeline 214 and the first slurry tank 215, a second valve 52 is arranged at a communication point B between the sewage pipeline 33 and the first slurry pipeline 214, which is close to the first slurry tank 215, a third valve 53 is arranged at a side far away from the second slurry tank 215, the third valve 53 is arranged between the communication point B and the first pipeline section 211, a first pump 56 is further arranged on the first slurry pipeline 214, the first pump 56 is arranged between the first valve 51 and the second valve 52, a fourth valve 54 and a second pump 57 are sequentially arranged on the second slurry pipeline 216 along the flow direction of the second slurry, a fifth valve 55 and a third pump 58 are arranged at an outlet of the flushing water tank 32, a sixth valve 59 is arranged on the sewage pipeline 33, and a seventh valve 60 is arranged on the second flushing pipeline 35.
The synchronous double-liquid grouting system for the shield with the ultra-large diameter has at least three working modes, namely a normal grouting mode, a mixing and first slurry pipeline front flushing mode and a first slurry pipeline rear flushing mode.
And (3) normal grouting mode: sliding the first flushing pipe 31 to the first working position, opening the first valve 51, the second valve 52, the third valve 53, the fourth valve 54, the first pump 56 and the second pump 57, closing the sixth valve 59 and the seventh valve 60, respectively flowing the first slurry and the second slurry into the mixer 21 along the first slurry pipe 214 and the second slurry pipe 216, respectively, after mixing, flowing the first slurry into the mixing pipe 22 through the mixing pipe section 213, and then pumping the first slurry out of the slurry outlet 119 through the second flow passage 118 and the first flow passage 117, thereby realizing synchronous two-liquid grouting.
Mix + first slurry pipe front flush mode: sliding the first flushing pipe 31 to the second working position, closing the first valve 51, the second valve 52, the fourth valve 54, the first pump 56 and the second pump 57, opening the fifth valve 55, the third pump 58 and the sixth valve 59, and allowing the flushing water in the flushing water tank 32 to flow back to the sewage tank 34 through the first flushing pipe 31, the lateral outlet 312, the second flow passage 118, the mixing pipe 22, the mixing pipe section 213, the first pipe section 211, the front part of the first slurry pipe 214 and the sewage pipe 33, thereby realizing the first stage of back flushing.
First slurry line back flush mode: the third valve 53 is closed, the second valve 52, the seventh valve 60 and the first pump 56 are opened, and the industrial water flows back to the waste tank 34 along the second flushing pipe 35, the rear part of the first slurry pipe 214 and the waste pipe 33, so that the second stage of back flushing is realized.
Two segmentation backward flows mode of washing can shorten the flowing distance of mixed liquid in mixing tube, the mixing section in first thick liquid pipeline, avoids mixed liquid to solidify because of the back flow time overlength, simultaneously, also can carry out complete and thorough washing to first thick liquid pipeline, and the washing effect is better.
The judgment of the washing effect can be made by a camera installed at the sewage tank 34.
In this embodiment, the ultra-large diameter shield synchronous double-liquid grouting system further comprises a hydraulic oil cylinder 40, a cylinder body 41 of the hydraulic oil cylinder 40 is connected to the shield body, a hydraulic rod 42 of the hydraulic oil cylinder 40 is hollow inside to form the first flushing pipeline 31, the hydraulic rod 42 is driven by a piston in the cylinder body 41, and a high-pressure oil duct or a high-pressure oil pipe is not required to be arranged on the gun body 111, so that the hydraulic oil can be prevented from leaking into the first passage 112, the design of the gun body 111 can be simplified, and the processing difficulty and the processing cost can be reduced.
To facilitate the detachment of the first flushing pipe 31, in this embodiment, the end of the first flushing pipe 31 remote from the first flow passage 117 communicates with the outlet pipe of the flushing water tank 32 via a first hose 36.
In order to facilitate the position adjustment of the mixer 21, the outlet of the mixing pipe section 213 is communicated with the inlet of the mixing pipe 22 through the second hose 221, and this arrangement also has the advantage that the time consumed by the mixed slurry flowing from the mixing pipe section 213 to the slurry outlet 119 can be adjusted to adapt to the slurries with different solidification times by replacing the second hose 221 with different lengths under the condition that the slurry outlet speed is not changed, so that the time from the mixed solution leaving the slurry outlet 119 to solidification is accurately controlled, and the grouting effect is improved.
In order to prevent the first slurry in the first slurry tank 215 from solidifying, a rotatable stirring paddle 220 is arranged in the first slurry tank 215, and a driving motor for driving the stirring paddle 220 to rotate is connected to the first slurry tank 215.
Example two
As shown in fig. 7, the second embodiment is substantially the same as the first embodiment, except that in the second embodiment, a second check valve 219 is disposed on the first slurry pipe 214, the second check valve 219 is disposed at a communication point B of the sewage pipe 33 and the first slurry pipe 214 near the side of the first slurry tank 215, and the second check valve 219 is used to prevent the washing water from flowing back to the first slurry tank 215 along the first slurry pipe 214.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a synchronous biliquid slip casting system of super large diameter shield, its characterized in that includes:
the grouting unit comprises a plurality of grouting guns, the plurality of grouting guns are annularly distributed on a shield body of a shield machine, the extending direction of the grouting guns is parallel to the axial lead of the shield body, a first channel, a second channel and a communicating cavity which are parallel to each other are arranged in the gun body of each grouting gun, one end part of each communicating cavity is communicated with the first channel and the second channel, the other end part of each communicating cavity penetrates through the end face, close to the tail part of the shield body, of the gun body, a plug is inserted into each communicating cavity, a through flow channel is arranged on each plug and comprises a first flow channel and a second flow channel communicated with the first flow channel, the opening at one end part of the first flow channel faces the first channel, the opening at the other end part of the first flow channel forms a slurry outlet of each grouting gun, and the opening, far away from the first flow channel, faces the second channel;
the mixing unit comprises a mixer and a mixing pipeline, the mixer is provided with a first pipe section, a second pipe section and a mixing pipe section, one end of the first pipe section is communicated with a first slurry tank through a first slurry pipeline, the other end of the first pipe section is communicated with the inlet end of the mixing pipe section, one end of the second pipe section is communicated with a second slurry tank through a second slurry pipeline, the other end of the second pipe section is communicated with the inlet end of the mixing pipe section, the outlet of the mixing pipe section is communicated with the inlet of the mixing pipeline, the mixing pipeline is inserted into the second channel, and the outlet of the mixing pipeline is in butt joint communication with the second channel;
the flushing unit comprises a first flushing pipeline and a flushing water tank, the first flushing pipeline is axially slidably inserted in the first flow channel along the second channel, the outer wall of the first flushing pipeline is in sealed connection with the inner wall of the first flow channel, a seal head is arranged at the end part of the first flushing pipeline, which is positioned in the first flow channel, a lateral outlet is formed in the outer wall of the end part, which is far away from the first flow channel, of the first flushing pipeline is communicated with the flushing water tank, the first flushing pipeline is provided with a first working position and a second working position, when the first flushing pipeline is positioned at the first working position, the seal head is positioned at one side, which is close to the first channel, of the first flow channel, the mixing pipeline is communicated with the second flow channel and the first flow channel, so that mixed slurry can be pumped out from the slurry outlet, and when the first flushing pipeline is positioned at the second working position, the seal head is positioned at one side, which is close to the slurry outlet, so that the mixed slurry can be pumped out along the lateral outlet and the second flow channel to perform flushing operation.
2. The ultra-large diameter shield synchronous double-liquid grouting system according to claim 1, characterized in that: and a first one-way valve is arranged on the second pipe section and is used for preventing the flushing water from flowing back to the second slurry tank along the second pipe section.
3. The ultra-large diameter shield synchronous double-liquid grouting system according to claim 2, characterized in that: the flushing unit further comprises a sewage pipeline and a sewage tank, one end of the sewage pipeline is communicated with the first slurry pipeline, and the other end of the sewage pipeline is communicated with the sewage tank.
4. The ultra-large diameter shield synchronous double-liquid grouting system according to claim 3, characterized in that: the flushing unit further comprises a second flushing pipeline communicated with the first slurry pipeline, and a communication point of the second flushing pipeline and the first slurry pipeline is located between a communication point of the sewage pipeline and the first slurry pipeline and a communication point of the first slurry pipeline and the first slurry tank and is close to the communication point of the first slurry pipeline and the first slurry tank.
5. The ultra-large diameter shield synchronous double-liquid grouting system according to claim 4, characterized in that: and the end part of the second flushing pipeline, which is far away from the first slurry pipeline, is communicated with the flushing water tank or an industrial water tank of the shield tunneling machine.
6. The ultra-large diameter shield synchronous double-liquid grouting system according to claim 4, characterized in that: and a second one-way valve is arranged on the first slurry pipeline, is positioned on one side of the communicated point of the sewage pipeline and the first slurry pipeline, which is close to the first slurry tank, and is used for preventing the flushing water from flowing back along the first slurry pipeline.
7. The ultra-large diameter shield synchronous double-liquid grouting system according to claim 1, characterized in that: the ultra-large-diameter shield synchronous double-liquid grouting system further comprises a hydraulic oil cylinder, a cylinder body of the hydraulic oil cylinder is connected to the shield body, and a hydraulic rod of the hydraulic oil cylinder is hollow inside, so that the hydraulic rod forms the first flushing pipeline.
8. The ultra-large diameter shield synchronous double-liquid grouting system according to claim 1, characterized in that: the end part of the first flushing pipeline, which is far away from the first flow passage, is communicated with the flushing water tank through a first hose.
9. The ultra-large diameter shield synchronous double-liquid grouting system according to claim 1, characterized in that: and the outlet of the mixing pipe section is communicated with the inlet of the mixing pipeline through a second hose.
10. The ultra-large diameter shield synchronous double-liquid grouting system according to claim 1, characterized in that: the first slurry tank is internally provided with a rotatable stirring paddle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210980912.4A CN115324593A (en) | 2022-08-16 | 2022-08-16 | Synchronous two liquid slip casting systems of super large diameter shield structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210980912.4A CN115324593A (en) | 2022-08-16 | 2022-08-16 | Synchronous two liquid slip casting systems of super large diameter shield structure |
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| Publication Number | Publication Date |
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| CN115324593A true CN115324593A (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210980912.4A Pending CN115324593A (en) | 2022-08-16 | 2022-08-16 | Synchronous two liquid slip casting systems of super large diameter shield structure |
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| Country | Link |
|---|---|
| CN (1) | CN115324593A (en) |
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- 2022-08-16 CN CN202210980912.4A patent/CN115324593A/en active Pending
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