CN210264734U - Shield constructs quick-witted compound pipe biliquid slip casting device - Google Patents
Shield constructs quick-witted compound pipe biliquid slip casting device Download PDFInfo
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- CN210264734U CN210264734U CN201920880675.8U CN201920880675U CN210264734U CN 210264734 U CN210264734 U CN 210264734U CN 201920880675 U CN201920880675 U CN 201920880675U CN 210264734 U CN210264734 U CN 210264734U
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Abstract
The utility model relates to the field of double-liquid grouting of shield machines, in particular to a double-liquid grouting device for a composite pipe of a shield machine, which comprises a grouting block, wherein at least one set of double-liquid grouting mechanism is arranged in the grouting block; the double-liquid grouting mechanism comprises a liquid A injection channel, a liquid B injection pipe, a sealing flushing channel and a back flushing piston mechanism; the liquid A injection channel is arranged in the grouting block, and a liquid B injection pipe is nested in the liquid A injection channel; the sealing flushing channel is arranged in the grouting block on one side of the liquid A injection channel; the back flush piston mechanism is located sealed washing channel, and the sealed and inside cavity setting of back flush piston mechanism tip, the external high-pressure C liquid of inner chamber of back flush piston mechanism, the utility model discloses a shield constructs quick-witted compound pipe biliquid slip casting device, and the installation is simple relatively, and the repair time is short, and the slip casting pipeline is difficult for blocking up, and A, B liquid mixes fully relatively to manufacturing process is simple, and the processing cost is lower relatively.
Description
Technical Field
The utility model relates to a shield constructs quick-witted biliquid slip casting field, a shield constructs quick-witted compound pipe biliquid slip casting device specifically says so.
Background
In the process of tunneling by a shield machine, if important buildings or overexcavation gaps exist between duct pieces and strata when water-rich geology or the top of a tunnel occurs, grout is injected into a tunnel to maintain pressure balance, otherwise, the problems of duct pieces floating up or water seepage of duct piece joints and tail gaps and ground surface settlement can occur, or even landslide occurs, so that road interruption or damage to the important buildings is caused, adverse effects and economic losses are brought to a construction party, and single-liquid grouting is slow in solidification speed and cannot timely support excavation of the strata under specific working conditions, so that the existing double-liquid synchronous grouting system is widely adopted in shield method construction.
The double-liquid grouting, namely alternately injecting the liquid A and the liquid B into stratum soil or mixing the two liquids, wherein the two solutions react rapidly to generate a mixture with stronger supporting capacity, so that the effect of supporting and filling pores is achieved, and the strength and the bearing capacity of the excavated stratum are improved.
At present, the A, B liquid injection amount ratio of double-liquid grouting in the field of shield tunneling is mostly 10:1, and the double-liquid grouting is roughly divided into two modes: firstly, cement (A liquid) pipeline is very good to be inserted the hose and is in the simple back that mixes of nearly exit end input water glass (B liquid), the blowout slip casting mouth, A liquid valve is closed when stopping the slip casting, simultaneously, pour into clear water (C liquid) washing B liquid pipe in the B liquid pipe, the gallery is directly gone into to residual flush fluid, the grout pipe is returned by the pressure of stratum and grout to the grout pipe as the grout that has not solidified yet, very easily arouse stifled pipe, have to dredge, personnel's cost has been increased, also direct influence construction progress. The double-liquid grouting is convenient to manufacture and low in cost, and is mainly adopted by European and American enterprises.
And secondly, the automatic back flushing device is adopted, when grouting is carried out, the double-acting hydraulic oil cylinder is started to drive the push rod to open the closed grout outlet, AB liquid is input into the closed grout outlet in two paths and mixed, and the AB liquid is sprayed out of the grout outlet after mixing. After grouting operation is finished, the grouting opening is closed, the liquid C is communicated, the liquid B nozzle is cleaned, and excess cement slurry is flushed back to the residual slurry tank, so that the pipeline is cleaned. The mode is mainly adopted by the Japanese enterprises, and compared with the former mode, the mode has the advantages of complex manufacturing process, high cost and high requirement on constructors, and when the construction is stopped, if misoperation occurs, pipelines are easily blocked, and the pipelines are very difficult to dredge.
In the fierce market competition, especially on the premise that the international market is increasingly white and hot, the synchronous grouting system is difficult to overcome by reducing the high-efficiency and stable work and manufacturing cost.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an invention aim at overcoming the defect that describes in the background art to realize a shield structure machine composite pipe biliquid slip casting device, the device installation is simple relatively, and the repair time is short, and the slip casting pipeline is difficult for blocking up, and A, B liquid mixes relatively fully, and manufacturing process is simple, and the processing cost is relatively lower.
In order to achieve the purpose of the invention, the technical scheme of the utility model is as follows: a double-liquid grouting device for a composite pipe of a shield tunneling machine comprises a grouting block, wherein at least one set of double-liquid grouting mechanism is arranged in the grouting block; the double-liquid grouting mechanism comprises a liquid A injection channel, a liquid B injection pipe, a sealing flushing channel and a back flushing piston mechanism; the liquid A injection channel is arranged in the injection block, a liquid B injection pipe is nested in the liquid A injection channel, and the liquid outlet end of the liquid B injection pipe is positioned on the inner side of the outlet end of the liquid A injection channel; the sealed flushing channel is arranged in the grouting block on one side of the liquid A injection channel, the inner side of the outlet end of the sealed flushing channel is intersected and communicated with the liquid A injection channel, and the outlet end of the sealed flushing channel is a grout nozzle; the back washing piston mechanism is positioned in the sealed washing channel, the end part of the back washing piston mechanism is sealed and is arranged in a hollow manner, a cleaning liquid spraying hole is formed in the rear side of the sealed end part of the back washing piston mechanism, and the inner cavity of the back washing piston mechanism is externally connected with high-pressure liquid C.
Further, the liquid outlet of the liquid B injection pipe is provided with a liquid B self-closing nozzle, the liquid B self-closing nozzle comprises a one-way valve, a spiral flow guide column is arranged in the one-way valve, a spiral flow guide groove is formed in the spiral flow guide column, when the liquid AB is mixed, the liquid A flows axially, after the liquid B is guided by the spiral, the liquid A is transversely cut during radial injection, and full mixing is achieved.
Furthermore, the check valve is a needle type check valve and comprises a valve body, a valve core, a pressure regulating spring and a pressure regulating nut, the spiral flow guide column is slidably sleeved on the periphery of the valve core inside the valve body, the pressure regulating nut is arranged on the valve core through a threaded structure, and the pressure regulating spring is sleeved on the periphery of the valve core between the spiral flow guide column and the pressure regulating nut; and an O-shaped sealing ring is arranged at the matched position of the end surfaces of the valve body and the valve core.
Furthermore, the back washing piston mechanism comprises a hollow piston with piston rings arranged at two ends, a cleaning liquid spraying hole is formed in the side wall of the piston between the piston rings at the two ends, a hollow push rod is connected to the tail end of the piston, a high-pressure liquid C is connected to the outer side of the inner cavity of the push rod, a guide limiting seat is arranged on the rear side of the push rod, the push rod penetrates through the guide limiting seat, and a push rod power mechanism is arranged on one side of the guide limiting seat and used for pushing and pulling the push rod to reciprocate in the sealed washing channel.
Furthermore, the distance between piston rings at two ends of the piston is not less than the width of the section of the liquid A injection channel, so that the length of the cleaning liquid spraying hole is not less than the width of the section of the liquid A injection channel, the liquid outlet amount of the liquid C cleaning liquid is ensured, and the back washing effect of the liquid A injection channel is ensured.
Furthermore, the push rod power mechanism is a double-acting hydraulic cylinder, and the double-acting hydraulic cylinder is externally connected with a hydraulic driving system of the shield tunneling machine.
Furthermore, the two sets of double-liquid grouting mechanisms are symmetrically arranged relative to the axis of the grouting block, and one set of double-liquid grouting mechanisms can be used for achieving one set of function in the range of the original grouting block with the same size.
The utility model discloses a shield constructs quick-witted compound pipe biliquid slip casting device's theory of operation:
when this biliquid slip casting device carries out the slip casting operation, push rod power unit pulling push rod to the piston of final pulling back flush piston mechanism moves to the inboard depths of sealed washing channel, makes the piston front end position in the rear side of A liquid injection passageway exit, makes A liquid injection passageway and thick liquid spout intercommunication, because B liquid filling tube nestification is in A liquid injection passageway, and B liquid is provided with the check valve of taking spiral water conservancy diversion post, and B liquid spouts back rotary-cut A liquid, spouts from thick liquid spout after the more even mixture.
When the double-liquid grouting device performs back flushing operation, the push rod power mechanism pushes the push rod, so that the piston of the back flushing piston mechanism is finally pushed to move towards the grout nozzle of the sealed flushing channel, the grout nozzle is finally plugged, the situation that the unset grout is returned to the grouting nozzle under the pressure of stratum and the pressure of the grout is prevented, at the moment, the cleaning liquid spraying hole between piston rings is over against the outlet of the liquid A injection channel, the inner cavity of the hollow push rod is communicated with the liquid A injection channel, high-pressure C liquid cleaning water is sprayed into the liquid A injection channel from the push rod through the cleaning liquid spraying hole for back flushing, as the outlet of the liquid B injection pipe is provided with the one-way valve, the liquid B in the liquid B injection pipe cannot be influenced by flushing water, and the C liquid flushing water returns to the residual grout pool of the shield machine after flushing the liquid A injection channel, so that the.
The utility model discloses a shield constructs compound two liquid slip casting devices of pipe of machine's beneficial effect:
1. the utility model discloses a two liquid slip casting devices of compound pipe of shield structure machine adopts two way pipeline deep hole processing, and nested pipeline realizes complex function again in the two pipelines, and processing manufacturing cost reduces by half, sets up one owner on the basis of former plate width of cloth again and is equipped with the structure, reduces shield tail welding work load half, and is close with single liquid slip casting piece cost, and manufacturing cost reduces by a wide margin, has increased the isodynamic competitiveness.
2. The utility model discloses a shield constructs quick-witted compound pipe biliquid slip casting device, B liquid self-closing nozzle adopt radial spiral injection mode, adopt the pin type check valve, design spiral guiding gutter in the valve body, when A, B liquid mixes, A liquid axial flow, B liquid is through the spiral water conservancy diversion after, crosscut A liquid when radially spraying, it is more abundant to realize A, B liquid and mix, can make B liquid can not receive the influence of sparge water simultaneously again.
3. The utility model discloses a shield constructs compound pipe biliquid slip casting device of machine can effectually overcome the mixed thick liquid because external pressure returns the slip casting pipeline, causes the defect that the pipeline very easily blocks up, has increased biliquid slip casting device's reliability, and improve equipment's online rate has further guaranteed the continuity and the efficiency of construction.
Drawings
Fig. 1 is a schematic structural diagram of the composite pipe double-liquid grouting device of the shield tunneling machine of the present invention;
FIG. 2 is an enlarged schematic view of A in FIG. 1;
FIG. 3 is a schematic structural view of a self-closing nozzle for liquid B;
FIG. 4 is an exploded view of the valve body and valve cartridge assembly of the self-closing nozzle of liquid B;
FIG. 5 is a schematic structural view of a spiral guide column of the self-closing nozzle for liquid B;
fig. 6 is a schematic top view of the structure of fig. 5.
In the figure: the device comprises a 1-A liquid injection channel, a 2-B liquid injection pipe, a 201-B liquid self-closing nozzle, a 211-valve body, a 212-valve core, a 213-pressure regulating spring, a 214-pressure regulating nut, a 215-spiral guide column, a 251-spiral guide groove, a 216-O type sealing ring, a 3-sealing flushing channel, a 4-backwashing piston mechanism, a 401-piston, a 411-piston ring, a 412-cleaning liquid spraying hole, a 402-push rod, a 403-guiding limiting seat, a 404-push rod power mechanism, a 5-grouting block, a 6-grouting nozzle, a 7-A liquid inlet, an 8-B liquid inlet and a 9-C liquid inlet.
Detailed Description
The present invention will be described in more detail with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1-6, the double-liquid grouting device for the composite pipe of the shield machine in the embodiment includes a grouting block 5, wherein two sets of double-liquid grouting mechanisms are arranged in the grouting block 5, and are symmetrically arranged relative to the axis of the grouting block 5, so that a function of one set for one set in a complete set can be realized within the range of the grouting block 5 with the same size, the working continuity of equipment can be further ensured, and the construction on-line rate of the equipment can be improved; in the embodiment, the double-liquid grouting mechanism comprises a liquid A injection channel 1, a liquid B injection pipe 2, a sealing flushing channel 3 and a back flushing piston mechanism 4; the liquid A injection channel 1 is arranged in the grouting block 5, the liquid B injection pipe 2 is nested in the liquid A injection channel 1, the liquid outlet end of the liquid B injection pipe 2 is positioned on the inner side of the outlet end of the liquid A injection channel 1, holes of phi 40 are adopted for the sealed flushing channel 3 and the hole of the liquid A injection channel 1 in order to optimize the processing and manufacturing difficulty, frequent tool replacement and re-alignment are not needed during processing, the cost is reduced, mass production is facilitated, the flow rate is increased, and the grouting speed can be increased because the liquid A injection channel 1 and the sealed flushing channel 3 are both phi 40;
the sealed flushing channel 3 is arranged in the grouting block 5 on one side of the liquid A injection channel 1, the inner side of the outlet end of the sealed flushing channel 3 is intersected and communicated with the liquid A injection channel 1, and the outlet end of the sealed flushing channel 3 is provided with a slurry nozzle 6; the back washing piston mechanism 4 is positioned in the sealed washing channel 3, and the end part of the back washing piston mechanism 4 is sealed and the inside of the back washing piston mechanism is hollow.
Referring to fig. 1 and 2, in this embodiment, the back flushing piston mechanism 4 includes a hollow piston 401 having piston rings 411 at both ends, a cleaning liquid spraying hole 412 is formed in a side wall of the piston 401 between the piston rings 411 at both ends, a hollow push rod 402 is connected to a tail end of the piston 401, a high-pressure C liquid is externally connected to an inner cavity of the push rod 402, the C liquid is cleaning water in the field of shield tunneling, a guide limit seat 403 is arranged at a rear side of the push rod 402, the push rod 402 passes through the guide limit seat 403, a push rod power mechanism 404 is arranged at one side of the guide limit seat 403 for pushing and pulling the push rod 402 to reciprocate in the seal flushing channel 3, the push rod power mechanism 404 is a double-acting hydraulic cylinder for pushing or pulling the push rod, the double-acting hydraulic cylinder is externally connected to a hydraulic drive system of the shield tunneling machine, the double-acting, the single-acting hydraulic cylinder is characterized in that the movement in one direction is realized by oil pressure, the return is realized by external force such as dead weight or a spring, and the like, only one end of two cavities of the oil cylinder is provided with oil, and the other end of the two cavities is contacted with air; the double-acting hydraulic cylinder has two cavities with oil, and the actions in two directions are realized by the oil pressure.
Referring to fig. 3-6, which are schematic structural diagrams of the liquid B self-closing nozzle, the liquid B self-closing nozzle 201 is arranged at the liquid outlet of the liquid B injection pipe 2, the liquid B self-closing nozzle 201 includes a one-way valve, a spiral guide column 215 is arranged in the one-way valve, when the spiral guide column 215 is provided with a spiral guide groove 251 and A, B, the liquid a flows axially, and after the liquid B is guided by the spiral, the liquid B is transversely cut during radial injection, so that the liquid a is fully mixed.
In this embodiment, in combination with a working environment and a manufacturing cost, the check valve is a needle check valve, and includes a valve body 211, a valve core 212, a pressure regulating spring 213, and a pressure regulating nut 214, the spiral guide pillar 215 is slidably sleeved on the periphery of the valve core 212 inside the valve body 211, the pressure regulating nut 214 is disposed on the valve core 212 through a threaded structure, and the pressure regulating spring 213 is sleeved on the periphery of the valve core 212 between the spiral guide pillar 215 and the pressure regulating nut 214; in order to realize the sealing when the valve body and the valve core are pressed tightly, an O-shaped sealing ring 216 is arranged at the matching position of the end surfaces of the valve body 211 and the valve core 212, before the O-shaped sealing ring 216 is installed, a sealing ring installation groove is firstly formed in the end surface of the valve body, the sealing ring installation groove can be directly formed in the end surface of the valve body 211 through milling or other processes, and the groove width of the sealing ring installation groove is slightly smaller than the diameter of the cross section of the O-shaped sealing ring 216.
In order to achieve a better backwashing effect, the distance between the piston rings 411 at the two ends of the piston 401 is not less than the section width of the liquid A injection channel 1, so that the length of the cleaning liquid spraying hole 412 is not less than the section width of the liquid A injection channel 1, the liquid outlet amount of the liquid C cleaning liquid is ensured, and the backwashing effect of the liquid A injection channel 1 is ensured.
When the double-liquid grouting device performs grouting operation, the push rod power mechanism 404 pulls the push rod 402, so that the piston 401 of the back flushing piston mechanism 4 is finally pulled to move to the inner deep part of the sealed flushing channel 3, the front end surface of the piston 401 is positioned at the rear side of the outlet of the liquid A injection channel 1, the liquid A injection channel 1 is communicated with the grout nozzle 6, the liquid B injection pipe 2 is nested in the liquid A injection channel 1, the liquid B is provided with the one-way valve with the spiral guide column 215, and the liquid A is rotationally cut after the liquid B is sprayed out and is sprayed out from the grout nozzle 6 after being more uniformly mixed.
When the double-liquid grouting device carries out back flushing operation, the push rod power mechanism 404 pushes the push rod 402, thereby finally pushing the piston 401 of the back washing piston mechanism 4 to move towards the direction of the grout nozzle 6 of the sealed washing channel 3, finally plugging the grout nozzle 6, preventing the unset grout from returning to the grouting nozzle 6 under the pressure of the stratum and the grout, at the moment, the cleaning liquid spray holes 412 between the piston rings 411 are over against the outlet of the liquid A injection channel 1, so that the inner cavity of the hollow push rod 402 is communicated with the liquid A injection channel 1, high-pressure liquid C cleaning water is sprayed into the liquid A injection channel 1 from the push rod 402 through the cleaning liquid spray holes 412 for back washing, because the outlet of the liquid B injection pipe is provided with a one-way valve, the liquid B in the liquid B injection pipe 2 cannot be influenced by flushing water, and C flushing water flushes the liquid A into the channel 1 and then returns to the residual slurry pool of the shield machine, so that the pipeline is cleaned.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various changes and modifications may be made to the specific embodiments described above, and various combinations of the technical features and structures proposed by the present invention may be made without departing from the concept of the present invention.
Claims (8)
1. The utility model provides a shield constructs quick-witted compound pipe biliquid slip casting device which characterized in that: the grouting device comprises a grouting block, wherein at least one set of double-liquid grouting mechanism is arranged in the grouting block;
the double-liquid grouting mechanism comprises a liquid A injection channel, a liquid B injection pipe, a sealing flushing channel and a back flushing piston mechanism;
the liquid A injection channel is arranged in the injection block, a liquid B injection pipe is nested in the liquid A injection channel, and the liquid outlet end of the liquid B injection pipe is positioned on the inner side of the outlet end of the liquid A injection channel;
the sealed flushing channel is arranged in the grouting block on one side of the liquid A injection channel, the inner side of the outlet end of the sealed flushing channel is intersected and communicated with the liquid A injection channel, and the outlet end of the sealed flushing channel is a grout nozzle;
the back washing piston mechanism is positioned in the sealed washing channel, the end part of the back washing piston mechanism is sealed and is arranged in a hollow manner, a cleaning liquid spraying hole is formed in the rear side of the sealed end part of the back washing piston mechanism, and the inner cavity of the back washing piston mechanism is externally connected with high-pressure liquid C.
2. The double-liquid grouting device for the composite pipe of the shield tunneling machine according to claim 1, characterized in that: the liquid outlet of the liquid B injection pipe is provided with a liquid B self-closing nozzle which comprises a one-way valve, a spiral guide column is arranged in the one-way valve, and a spiral guide groove is formed in the spiral guide column.
3. The double-liquid grouting device for the composite pipe of the shield tunneling machine according to claim 2, characterized in that: the check valve is a needle type check valve and comprises a valve body, a valve core, a pressure regulating spring and a pressure regulating nut, wherein the spiral diversion column is sleeved on the periphery of the valve core inside the valve body in a sliding mode, the pressure regulating nut is arranged on the valve core through a threaded structure, and the pressure regulating spring is sleeved on the periphery of the valve core between the spiral diversion column and the pressure regulating nut.
4. The double-liquid grouting device for the composite pipe of the shield tunneling machine according to claim 3, characterized in that: and an O-shaped sealing ring is arranged at the matched position of the end surfaces of the valve body and the valve core.
5. The double-liquid grouting device for the composite pipe of the shield tunneling machine according to claim 1, characterized in that: the back washing piston mechanism comprises a hollow piston with piston rings arranged at two ends, a cleaning liquid spraying hole is formed in the side wall of the piston between the piston rings at the two ends, a hollow push rod is connected to the tail end of the piston, high-pressure liquid C is connected to the outer portion of the inner cavity of the push rod, a guiding limiting seat is arranged on the rear side of the push rod, the push rod penetrates through the guiding limiting seat, and a push rod power mechanism is arranged on one side of the guiding limiting seat and used for pushing and pulling the push rod to reciprocate in the sealed washing channel.
6. The double-liquid grouting device for the composite pipe of the shield tunneling machine according to claim 5, characterized in that: the distance between the piston rings at two ends of the piston is not less than the section width of the liquid A injection channel.
7. The double-liquid grouting device for the composite pipe of the shield tunneling machine according to claim 5, characterized in that: the push rod power mechanism is a double-acting hydraulic cylinder, and the double-acting hydraulic cylinder is externally connected with a hydraulic driving system of the shield tunneling machine.
8. The double-liquid grouting device for the composite pipe of the shield tunneling machine according to claim 1, characterized in that: the double-liquid grouting mechanism comprises two sets, and the two sets of double-liquid grouting mechanisms are symmetrically arranged relative to the axis of the grouting block.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920880675.8U CN210264734U (en) | 2019-06-13 | 2019-06-13 | Shield constructs quick-witted compound pipe biliquid slip casting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920880675.8U CN210264734U (en) | 2019-06-13 | 2019-06-13 | Shield constructs quick-witted compound pipe biliquid slip casting device |
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| CN201920880675.8U Active CN210264734U (en) | 2019-06-13 | 2019-06-13 | Shield constructs quick-witted compound pipe biliquid slip casting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242325A (en) * | 2019-06-13 | 2019-09-17 | 中铁工程装备集团盾构制造有限公司 | A kind of shield machine multiple tube two-liquid grouting device |
| CN117167031A (en) * | 2023-10-24 | 2023-12-05 | 中国建筑第六工程局有限公司 | Double-liquid-slurry grouting device suitable for shield split initiation and use method thereof |
-
2019
- 2019-06-13 CN CN201920880675.8U patent/CN210264734U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242325A (en) * | 2019-06-13 | 2019-09-17 | 中铁工程装备集团盾构制造有限公司 | A kind of shield machine multiple tube two-liquid grouting device |
| CN110242325B (en) * | 2019-06-13 | 2024-04-30 | 中铁工程装备集团盾构制造有限公司 | Double-liquid grouting device for composite pipe of shield tunneling machine |
| CN117167031A (en) * | 2023-10-24 | 2023-12-05 | 中国建筑第六工程局有限公司 | Double-liquid-slurry grouting device suitable for shield split initiation and use method thereof |
| CN117167031B (en) * | 2023-10-24 | 2024-02-13 | 中国建筑第六工程局有限公司 | Double-liquid-slurry grouting device suitable for shield split initiation and use method thereof |
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