CN214787468U - Network type grouting device for soft rock roadway with section - Google Patents
Network type grouting device for soft rock roadway with section Download PDFInfo
- Publication number
- CN214787468U CN214787468U CN202023276713.0U CN202023276713U CN214787468U CN 214787468 U CN214787468 U CN 214787468U CN 202023276713 U CN202023276713 U CN 202023276713U CN 214787468 U CN214787468 U CN 214787468U
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- pipeline
- grout
- grouting
- pipe
- injection
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- 239000011435 rock Substances 0.000 title claims abstract description 30
- 238000002347 injection Methods 0.000 claims abstract description 88
- 239000007924 injection Substances 0.000 claims abstract description 88
- 238000007569 slipcasting Methods 0.000 claims abstract description 43
- 239000002002 slurry Substances 0.000 claims abstract description 41
- 239000011440 grout Substances 0.000 claims description 34
- 230000001105 regulatory effect Effects 0.000 claims description 24
- 230000008093 supporting effect Effects 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 52
- 239000012141 concentrate Substances 0.000 description 9
- 235000008504 concentrate Nutrition 0.000 description 8
- 239000003245 coal Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 235000014666 liquid concentrate Nutrition 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- JOHZPMXAZQZXHR-UHFFFAOYSA-N pipemidic acid Chemical compound N1=C2N(CC)C=C(C(O)=O)C(=O)C2=CN=C1N1CCNCC1 JOHZPMXAZQZXHR-UHFFFAOYSA-N 0.000 description 1
- 230000003405 preventing effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a network type grouting device for a section soft rock tunnel, which comprises an adjustable bracket, wherein the top of the adjustable bracket is provided with a slurry collecting part, the bottom of the adjustable bracket is provided with a slurry injection part, the slurry collecting part is fixedly connected with the adjustable bracket, and the slurry injection part is fixedly connected with the adjustable bracket; adopt the utility model discloses the scheme, the utility model discloses a quick slip casting device of network formula has realized the network formula slip casting mode of one to many slip casting stock slip casting in succession simultaneously, compares with current existing equipment, and the slip casting effect of having overcome single stock slip casting is poor, the technology is backward, the operation singleness, the overlap joint is inseparable between the process, the shortcoming of cycle length, also avoided arranging a large amount of personnel and equipment simultaneous operation simultaneously, cause the problem that personnel and equipment occupy, the engineering time has been saved, the efficiency of construction has been improved.
Description
Technical Field
The utility model belongs to tunnel country rock consolidates the engineering field of strutting, more specifically says, the utility model relates to a network formula slip casting device in section soft rock tunnel.
Background
In the coal mine tunnel supporting engineering, the cracks of the tunnel surrounding rock can be filled through anchor rod grouting, broken rock blocks are consolidated into a whole, the self bearing capacity of the surrounding rock is fully improved, the supporting effect is improved, the water plugging and seepage preventing effect can be achieved in the tunnel with large water inflow, and the current anchor rod grouting reinforcement technology is very common as a reinforcement measure for effectively improving the bearing capacity and stability of the tunnel surrounding rock; along with the increase of large-scale working faces and the increase of mining depth, the requirements of deep well tunnels on the aspects of coal transportation, ventilation and the like are gradually increased, the mechanization degree of coal mines is continuously improved and heavy equipment is continuously applied, the section of the tunnel is continuously increased, the maintenance of the tunnel is increasingly difficult, particularly a large-section soft rock tunnel is large in tunnel span, the overall supporting workload of the tunnel is large, and the supporting time of the tunnel in unit length is short; for grouting engineering of such large-section soft rock tunnels, the conventional tunnel grouting device is characterized in that a grouting pump is directly connected with a grouting anchor rod installed in surrounding rock of the tunnel, the grouting anchor rod is plugged after grouting is finished, and then grouting operation is performed on the next grouting anchor rod to be grouted; because the grouting is reinforced one by one, the time is consumed for reinforcing, the lap joint between the working procedures is not tight, the construction efficiency is low, the labor phenomenon of constructors is caused, the cycle period is long, the management of equipment and personnel is disordered, the overall construction efficiency is influenced, and meanwhile, the construction progress is influenced due to the insufficient quantity and poor performance of grouting equipment; in some mines, a large number of personnel and equipment are arranged to operate simultaneously to meet the progress requirement, so that the personnel and the equipment occupy, and the normal roadway construction is greatly influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a network formula grouting device in section soft rock tunnel that slip casting length consuming time and slip casting are efficient is provided.
In order to realize the purpose, the utility model discloses the technical scheme who takes does: the utility model provides a network formula slip casting device in section soft rock tunnel, includes adjustable support, adjustable support top is equipped with thick liquid centralization portion, and adjustable support bottom is equipped with thick liquid injection portion, and wherein the thick liquid is fixed connection between centralization portion and the adjustable support, is fixed connection between thick liquid injection portion and the adjustable support.
The utility model discloses a network formula slip casting device in soft rock tunnel of section, thick liquid concentration portion includes that the thick liquid concentrates the pipe, concentrates pipe relief pipeline and thick liquid buffer, and wherein, the thick liquid concentrates the pipe top and is equipped with grouting pump pipeline connector, and fixed connection between pipe and the grouting pump pipeline connector is concentrated to the thick liquid, and fixed connection between pipe bottom and the thick liquid buffer is concentrated to the thick liquid, concentrates pipe relief pipeline and thick liquid to concentrate the pipe mid portion and be connected.
The utility model discloses a network formula slip casting device in soft rock tunnel of section, concentrate and be equipped with on the pipe pressure release pipeline and concentrate the pipe relief valve, concentrate the pipe relief valve and concentrate fixed connection between the pipe pressure release pipeline (when the thick liquid buffer stops up or whole thick liquid divides the injection pipeline and slip casting finishes simultaneously, the accessible is concentrated a pipe relief pressure passageway and is carried out urgent release).
The utility model discloses a network formula slip casting device in soft rock tunnel of section, thick liquid injection unit includes four parallel arrangement's thick liquid separate injection pipeline, pressure regulating valve, separate injection pipe pressure release pipeline, quick slip casting connector and separately injects the control valve, wherein, every thick liquid separate injection pipeline top all passes adjustable support with UNICOM between the thick liquid concentrated portion, fixed connection between every thick liquid separate injection pipeline bottom and the quick slip casting connector, pressure regulating valve set up at every thick liquid separate injection pipeline one end near adjustable support, separately inject the control valve setting at every thick liquid separate injection pipeline and be close to quick slip casting connector one end, separately inject pipe pressure release pipeline setting at every thick liquid separate injection pipeline intermediate portion and with the thick liquid separate injection pipeline between fixed connection.
The utility model discloses a network formula slip casting device in soft rock tunnel of section, be equipped with on the branch notes pipe pressure release pipeline and annotate the pipette relief valve, annotate the pipette relief valve and annotate fixed connection between the pipette pressure release pipeline.
The utility model discloses a network formula slip casting device in soft rock tunnel of section, every thick liquid separate injection pipeline of four parallel arrangement's thick liquid separate injection pipeline all is equipped with flowmeter and manometer, and flowmeter and manometer are in between every separate injection pipeline's the branch injection pipe pressure release pipeline and pressure regulating valve of every thick liquid separate injection pipeline.
The utility model discloses a network type grouting device for a section soft rock roadway, wherein the quick grouting connector comprises a separate injection pipe connector, a clamping strip, a grouting anchor rod and a grouting anchor rod connector, wherein the clamping strip is fixedly arranged on the separate injection pipe connector, one end of the separate injection pipe connector is connected with a grout separate injection pipeline, the other end of the separate injection pipe connector is connected with the grouting anchor rod connector by the clamping strip, the grouting anchor rod is in threaded connection with the grouting anchor rod connector (the separate injection pipe connector and the grouting anchor rod connector are both hollow, the separate injection pipe connector is connected with each grout separate injection pipeline, the inner wall of the grouting anchor rod connector is provided with internal threads which can be connected with the grouting end threads of the grouting anchor rod, the separate injection pipe connector and the grouting anchor rod connector are in quick connection through the clamping strip, the disassembly and the installation are quick, and the quick separation with the grouting anchor rod can be realized, and quick connection with the next grouted anchor).
The utility model discloses a network formula slip casting device in section soft rock tunnel, adjustable bracket includes backup pad, regulation screw hole, fastening bolt and regulating plate, and wherein, backup pad and regulating plate all are provided with the regulation screw hole, and bolt fixed connection between backup pad through using fastening bolt and the regulating plate, the backup pad with fixed connection between the thick liquid concentrated middle part is equipped with a plurality of apertures on the regulating plate, and the regulating plate passes through swing joint between aperture and the thick liquid injection portion (the backup pad is used for bearing the weight of thick liquid buffer memory, has a plurality of apertures in the regulating plate for thick liquid divides the injection pipe to pass, utilizes fastening bolt to fix the regulating plate to different regulation screw holes on, is used for fixed and near the thick liquid branch injection pipe of regulation thick liquid buffer memory device.
Adopt the utility model discloses a scheme, (1) the utility model discloses a quick slip casting device of network formula has realized the network formula slip casting mode of a continuous slip casting simultaneously of one to many slip casting stocks, compares with current existing equipment, and the slip casting effect of having overcome single stock slip casting is poor, the technology is outdated, the single operation, the overlap joint is inseparable between the process, the shortcoming of cycle length, also avoided arranging a large amount of personnel and equipment simultaneous operation simultaneously, cause the problem that personnel and equipment occupy, the engineering time has been saved, the efficiency of construction has been improved.
(2) The utility model discloses a flowmeter, manometer on each thick liquid of device divides the note pipe, divide note pipe control valve, can realize that each thick liquid divides the independent control of note intraductal thick liquid flow, pressure, can close the thick liquid that reaches the slip casting requirement at any time and divide the note pipe and can not influence the slip casting work that adjacent thick liquid divides the note pipe.
(3) The utility model discloses a device is equipped with and concentrates tub release pipeline, divides injection pipe release pipeline and pressure regulating valve, can effectually adjust pipeline flow, pressure, fully accomplishes overall control, single operation, and the homogeneity of the regional slip casting of slip casting is guaranteed to furthest's assurance slip casting effect.
(4) The adjustable support can bear the weight of thick liquid buffer, fix and adjust near thick liquid branch notes pipe of thick liquid buffer, reduces the influence of tunnel environment to the thick liquid buffer, avoids thick liquid to divide the influence of note pipe winding to the construction.
Additionally, the utility model discloses still have simple structure reliable, use method is convenient, advantages such as detachable design adaptation tunnel environment.
The present invention will be described in more detail with reference to the accompanying drawings and examples.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
FIG. 1 is a schematic view of the present invention;
fig. 2 is a schematic view of an adjusting bracket of the present invention;
fig. 3 is a schematic structural view of the rapid grouting connector of the present invention;
fig. 4 is a reference diagram of the usage state of the present invention;
labeled as: 1. a grouting pump pipeline connector; 2. a slurry concentration pipe; 3. a centralized pipe pressure relief valve; 4. a centralized pipe pressure relief pipeline; 5. a slurry buffer; 6. an adjustable support; 61. a support plate; 62. adjusting the threaded hole; 63. fastening a bolt; 64. an adjusting plate; 7. a pressure regulating valve; 8. a flow meter; 9. a pressure gauge; 10. a slurry separate injection pipeline; 11. a separate injection tube pressure release valve; 12. a branch injection pipe pressure relief pipeline; 13. a dispensing tube control valve; 14. a connector is quickly grouted; 141. a dispensing tube connector; 142. clamping the strip; 143. grouting anchor rod connectors; 15. grouting an anchor rod; 151. grouting the grouting end of the grouting anchor rod; 16. a tray; 17. a grout stopping plug; 18. drilling; 19. a roadway;
Detailed Description
The following description of the embodiments of the present invention, with reference to the accompanying drawings, will be made in further detail to explain, for example, the shapes and structures of the components, the mutual positions and connection relationships among the components, the functions and working principles of the components, the manufacturing process, and the operation and use method of the components, so as to help those skilled in the art to understand the concept and technical solutions of the present invention more completely, accurately and deeply.
FIG. 1 is a schematic view of the present invention; fig. 2 is a schematic view of an adjusting bracket of the present invention; fig. 3 is a schematic structural view of the rapid grouting connector of the present invention; as shown in fig. 1, 2 and 3, the network type grouting device for a section soft rock roadway comprises an adjustable support 6, wherein a slurry concentration part is arranged at the top of the adjustable support 6, and a slurry injection part is arranged at the bottom of the adjustable support 6, wherein the slurry concentration part is fixedly connected with the adjustable support 6, and the slurry injection part is fixedly connected with the adjustable support 6; the slurry concentration part comprises a slurry concentration pipe 2, a concentration pipe pressure relief pipeline 4 and a slurry buffer 5, wherein the top of the slurry concentration pipe 2 is provided with a grouting pump pipeline connecting port 1, the slurry concentration pipe 2 is fixedly connected with the grouting pump pipeline connecting port 1, the bottom of the slurry concentration pipe 2 is fixedly connected with the slurry buffer 5, and the concentration pipe pressure relief pipeline 4 is connected with the middle part of the slurry concentration pipe 2; a concentration pipe pressure relief valve 3 is arranged on the concentration pipe pressure relief pipeline 4, and the concentration pipe pressure relief valve 3 is fixedly connected with the concentration pipe pressure relief pipeline 4; the slurry injection part comprises four slurry separate injection pipelines 10, a pressure regulating valve 7, separate injection pipe pressure relief pipelines 12, a quick grouting connector 14 and separate injection pipe control valves 13 which are arranged in parallel, wherein the top of each slurry separate injection pipeline 10 penetrates through the adjustable bracket 6 to be communicated with the slurry centralized part, the bottom of each slurry separate injection pipeline 10 is fixedly connected with the quick grouting connector 14, the pressure regulating valve 7 is arranged at one end, close to the adjustable bracket 6, of each slurry separate injection pipeline 10, the separate injection pipe control valves 13 are arranged at one end, close to the quick grouting connector 14, of each slurry separate injection pipeline 10, and the separate injection pipe pressure relief pipelines 12 are arranged at the middle part of each separate injection pipeline 10 and are fixedly connected with the slurry separate injection pipelines 10; a dispensing tube pressure relief valve 11 is arranged on the dispensing tube pressure relief pipeline 12, and the dispensing tube pressure relief valve 11 is fixedly connected with the dispensing tube pressure relief pipeline 12; each slurry dispensing pipeline of the four slurry dispensing pipelines 10 arranged in parallel is provided with a flowmeter 8 and a pressure gauge 9, and the flowmeter 8 and the pressure gauge 9 are positioned between a dispensing pipe pressure relief pipeline 12 and a pressure regulating valve 7 of each slurry dispensing pipeline 10; the quick grouting connector 14 comprises a separate injection pipe connector 141, a clamping strip 142, a grouting anchor rod 15 and a grouting anchor rod connector 143, wherein the clamping strip 142 is fixedly arranged on the separate injection pipe connector 141, one end of the separate injection pipe connector 141 is connected with the grout separate injection pipeline 10, the other end of the separate injection pipe connector 141 is connected with the grouting anchor rod 15 connector, and the grouting anchor rod 15 is in threaded connection with the grouting anchor rod connector 143; adjustable bracket 6 includes backup pad 61, regulation screw hole 62, fastening bolt 63 and regulating plate 64, and wherein, backup pad 61 and regulating plate 64 all are provided with regulation screw hole 62, and backup pad 61 is through using bolt fixed connection between fastening bolt 63 and the regulating plate 64, backup pad 61 with fixed connection between the thick liquid concentrated portion is equipped with a plurality of apertures on the regulating plate 64, and regulating plate 64 passes through swing joint between aperture and the thick liquid injection portion.
When the grouting anchor rod connector is used, the grouting anchor rod connector 143 is mounted on the grouting anchor rod 15 in advance according to the number of grouting anchor rods 15 required to be grouted, the position of the adjusting plate 64 on the adjustable bracket 6 is adjusted, each grout separate injection pipeline 10 at the grout buffer 5 is in a reasonable position, and mutual influence is prevented; according to the number of the grout separate injection pipelines 10, the grout separate injection pipelines 10 are connected with a grouting anchor rod 15 through a quick grouting connector 14 fixedly mounted on the grout separate injection pipelines 10, and meanwhile, a grout centralized pipe 2 is connected with a grout outlet pipeline of a grouting pump through a grouting pump pipeline connector 1 at the end of the grout centralized pipe 2, so that the formed grouting pipeline is closed; closing all pipeline valves in the device, starting a grouting pump, opening each dispensing tube pressure relief valve 11 when the slurry in the slurry buffer 5 reaches a certain amount, closing the dispensing tube pressure relief valves 11 when all dispensing tube pressure relief pipelines 12 have slurry sprayed out, adjusting a pressure adjusting valve 7, opening a dispensing tube control valve 13, and grouting a grouting anchor rod 15 initially connected with the device; when the flow meter 8 on one grout dispensing pipeline 10 stops changing and the grouting pressure displayed by the pressure gauge 9 reaches a preset pressure, the grouting operation of the grouting anchor rod 15 connected with the grout dispensing pipeline 10 is considered to be completed, the dispensing pipe control valve 13 is closed, the grout dispensing pipeline 10 is quickly separated from the grouting anchor rod 15 and is quickly connected with the next grouting anchor rod 15 provided with the quick grouting connector 14 in advance, and grouting is continued; and (3) when the grouting operation of all grouting anchor rods 15 is completed, releasing the pressure of each slurry separate injection pipeline 10, detaching the slurry separate injection pipelines 10 from the grouting anchor rods 15 after the pressure is released, pumping clear water by using a grouting pump, opening all valves, and cleaning the device.
Adopt the utility model discloses the scheme is adopted the utility model discloses a, (1) the utility model discloses a quick slip casting device of network formula has realized the network formula slip casting mode of continuous slip casting simultaneously of one to many slip casting stocks, compares with current existing equipment, and the slip casting effect of having overcome single stock slip casting is poor, the technology is outdated, the operation is single, the overlap joint is inseparable between the process, the shortcoming of cycle length, also avoided arranging a large amount of personnel and equipment simultaneous operation simultaneously, cause the problem that personnel and equipment occupy, the engineering time has been saved, the efficiency of construction has been improved.
(2) The utility model discloses a flowmeter, manometer on each thick liquid of device divides the note pipe, divide note pipe control valve, can realize that each thick liquid divides the independent control of note intraductal thick liquid flow, pressure, can close the thick liquid that reaches the slip casting requirement at any time and divide the note pipe and can not influence the slip casting work that adjacent thick liquid divides the note pipe.
(3) The utility model discloses a device is equipped with and concentrates tub release pipeline, divides injection pipe release pipeline and pressure regulating valve, can effectually adjust pipeline flow, pressure, fully accomplishes overall control, single operation, and the homogeneity of the regional slip casting of slip casting is guaranteed to furthest's assurance slip casting effect.
(4) The adjustable support can bear the weight of thick liquid buffer, fix and adjust near thick liquid branch notes pipe of thick liquid buffer, reduces the influence of tunnel environment to the thick liquid buffer, avoids thick liquid to divide the influence of note pipe winding to the construction.
Additionally, the utility model discloses still have simple structure reliable, use method is convenient, advantages such as detachable design adaptation tunnel environment.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.
Claims (8)
1. The utility model provides a network formula slip casting device in soft rock tunnel of section, includes adjustable support, its characterized in that: the adjustable bracket is characterized in that a slurry centralizing part is arranged at the top of the adjustable bracket, a slurry injection part is arranged at the bottom of the adjustable bracket, wherein the slurry centralizing part is fixedly connected with the adjustable bracket, and the slurry injection part is fixedly connected with the adjustable bracket.
2. The networked grouting device for a fractured soft rock roadway according to claim 1, wherein the grout concentration part comprises a grout concentration pipe, a concentration pipe pressure relief pipeline and a grout buffer, wherein a grouting pump pipeline connecting port is formed in the top of the grout concentration pipe, the grout concentration pipe is fixedly connected with the grouting pump pipeline connecting port, the bottom of the grout concentration pipe is fixedly connected with the grout buffer, and the concentration pipe pressure relief pipeline is connected with the middle part of the grout concentration pipe.
3. The network type grouting device for the soft rock roadway with the fracture surface as claimed in claim 2, wherein a concentration pipe relief valve is arranged on the concentration pipe relief pipeline, and the concentration pipe relief valve is fixedly connected with the concentration pipe relief pipeline.
4. The network type grouting device for the section soft rock roadway according to claim 1, wherein the grout injection part comprises four parallel grout injection pipelines, a pressure regulating valve, a injection pipe pressure relief pipeline, a quick grouting connector and injection pipe control valves, wherein the top of each grout injection pipeline penetrates through the adjustable bracket and is communicated with the grout collecting part, the bottom of each grout injection pipeline is fixedly connected with the quick grouting connector, the pressure regulating valve is arranged at one end, close to the adjustable bracket, of each grout injection pipeline, the injection pipe control valve is arranged at one end, close to the quick grouting connector, of each grout injection pipeline, and the injection pipe pressure relief pipeline is arranged at the middle part of each grout injection pipeline and is fixedly connected with the grout injection pipelines.
5. The network type grouting device for the soft rock roadway with the fracture surface as claimed in claim 4, wherein a separate injection pipe relief valve is arranged on the separate injection pipe relief pipeline, and the separate injection pipe relief valve is fixedly connected with the separate injection pipe relief pipeline.
6. The network type grouting device for a soft rock roadway with sections according to claim 4, wherein each of the four parallel slurry injection pipelines is provided with a flow meter and a pressure gauge, and the flow meter and the pressure gauge are arranged between a pressure relief pipeline and a pressure regulating valve of each injection pipeline.
7. The network type grouting device for the section soft rock roadway, according to claim 4, characterized in that the quick grouting connector comprises a separate injection pipe connector, a clamping strip, a grouting anchor rod and a grouting anchor rod connector, wherein the clamping strip is fixedly arranged on the separate injection pipe connector, one end of the separate injection pipe connector is connected with the slurry separate injection pipeline, the other end of the separate injection pipe connector is connected with the grouting anchor rod connector, and the grouting anchor rod is in threaded connection with the grouting anchor rod connector.
8. The network type grouting device of a section soft rock roadway according to claim 1, wherein the adjustable bracket comprises a supporting plate, an adjusting threaded hole, a fastening bolt and an adjusting plate, wherein the supporting plate and the adjusting plate are both provided with the adjusting threaded hole, the supporting plate is fixedly connected with the adjusting plate through the fastening bolt, the supporting plate is fixedly connected with the grout collecting part, the adjusting plate is provided with a plurality of small holes, and the adjusting plate is movably connected with the grout injection part through the small holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023276713.0U CN214787468U (en) | 2020-12-29 | 2020-12-29 | Network type grouting device for soft rock roadway with section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023276713.0U CN214787468U (en) | 2020-12-29 | 2020-12-29 | Network type grouting device for soft rock roadway with section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214787468U true CN214787468U (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023276713.0U Active CN214787468U (en) | 2020-12-29 | 2020-12-29 | Network type grouting device for soft rock roadway with section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214787468U (en) |
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2020
- 2020-12-29 CN CN202023276713.0U patent/CN214787468U/en active Active
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