CN217813396U - Special drilling plugging equipment for tunnel - Google Patents
Special drilling plugging equipment for tunnel Download PDFInfo
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- CN217813396U CN217813396U CN202221906846.8U CN202221906846U CN217813396U CN 217813396 U CN217813396 U CN 217813396U CN 202221906846 U CN202221906846 U CN 202221906846U CN 217813396 U CN217813396 U CN 217813396U
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Abstract
The utility model discloses a special drilling shutoff equipment in tunnel, include: the utility model is suitable for the technical field of geological exploration, a plugging air bag is expanded through gas to plug the lower part of a drilling hole, slurry is prevented from flowing into a tunnel during grouting, the plugging is closer to the drilling hole, a better plugging effect is realized, excessive labor is not needed, and the operation is convenient and labor-saving; when the construction plugging is carried out, the subway operation in the tunnel is not influenced, and the safety factor is higher; after the sealing effect is achieved by complete expansion, a permanent sealing state is achieved by grouting the interior of the sealing device, the sealing strength is further enhanced, and the sealing effect is consolidated.
Description
Technical Field
The utility model belongs to the technical field of the geological survey, specifically a special drilling shutoff equipment in tunnel.
Background
Geological exploration is a short term for geological exploration work. In a broad sense, it can be generally understood as a synonym of geological work, which is a different investigation and research work of the geological conditions such as rock, stratum structure, mineral, groundwater, and landform in a certain area according to the needs of economic construction, national defense construction, and scientific and technical development. There are different geological exploration jobs for different purposes.
In geological exploration work, a drilling device is utilized to drill a cylindrical round hole with smaller diameter and larger depth into the ground, which is also called drilling. The bore holes for drilling oil and gas and ground water are larger in diameter. The borehole diameter and depth size depend on the geological mineral deposit depth and the purpose of the borehole.
After a subway line is preliminarily designed, geological survey needs to be carried out on the designed line, whether subway tunnel excavation conditions are met is determined, and the original tunnel needs to be avoided at the position of a drilling hole; if the line overlaps with the original tunnel interval line, it needs to be arranged outside the tunnel width.
In actual construction, many accidents that the exploration drilling machine drills through the original tunnel wall, the subway operation is seriously hindered, and water seepage and other hazards are caused due to the fact that a design scheme is wrong, drilling points are replaced privately and construction is not carried out according to a picture.
The method for drilling through the original tunnel wall by an exploration drilling machine is hole sealing generally, the existing hole sealing method is mainly to seal a hole section with general lithology by using clay, a mineralized layer is generally sealed by using cement, and in the sealing process, cement or clay is traditionally pressed into a drilled hole by using a pumping method. When the traditional method is adopted for sealing the holes, the cracks can not be effectively sealed, the sealing holes are not compact, a large number of gaps exist in the holes easily, the mechanical properties such as strength can be greatly reduced, and the sealing effect is not ideal.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect, provide a special drilling shutoff equipment in tunnel.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a special tunnel drilling and plugging device comprises: the device comprises an air inflating device and a grouting pump, wherein the air inflating device and the grouting pump are arranged on the ground, a drilling hole sequentially penetrates through the ground and a segment wall and is communicated with a subway tunnel, and a grouting pipe is arranged in the drilling hole;
the grouting pipe comprises a grouting core pipe and a sleeve sleeved on the outer side of the grouting core pipe, the sleeve comprises a plurality of valve pipes which are sequentially connected end to end, adjacent valve pipes are connected in a screwed mode through threads, a plurality of grouting holes are formed in the side wall of each valve pipe, and a plurality of rubber sleeves are sleeved on the outer side of each valve pipe;
the grouting core pipe comprises a grout outlet inner pipe and a grout outlet perforated pipe at the lower end of the grout outlet inner pipe, a plurality of plugs are arranged at the upper end and the lower end of the grout outlet perforated pipe, and a plurality of grout outlet holes are formed in the grout outlet perforated pipe.
Preferably, the lower end of the sleeve is provided with an air blocking hole, a one-way valve is arranged in the sleeve, and the bottom of the sleeve is sleeved with an air bag.
Preferably, the check valve includes nylon valve needle, disk seat, spacing ring, the disk seat sets up in stifled gas hole upper end, and the air vent has been seted up to its central department, nylon valve needle, spacing ring set gradually in the disk seat below, and nylon valve needle lower extreme and spacing ring upper end sliding connection, nylon valve needle upper end is provided with the toper structure with air vent matched with.
Preferably, the first section of the valve pipe is provided with an external thread, the tail end of the valve pipe is provided with an internal thread, and the adjacent valve pipes are connected in a screwing mode through the threads.
Preferably, a plurality of groups of the plurality of the grout injecting holes are distributed along the valve pipe array, and each two groups of the grout injecting holes are correspondingly provided with a rubber sleeve.
Preferably, the upper end of the slurry outlet perforated pipe is provided with three plugs, the lower end of the slurry outlet perforated pipe is provided with one plug, the plugs are of a circular truncated cone structure, and the directions of the plugs at the upper end and the lower end of the slurry outlet perforated pipe are opposite.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
in the utility model, the plugging air bag is expanded by gas to plug the lower part of the drilling hole, thereby avoiding the slurry flowing into the tunnel during grouting, leading the plugging to be closer to the drilling hole, realizing better plugging effect, avoiding excessive labor and saving labor power with convenient operation; when the construction plugging is carried out, the subway operation in the tunnel is not influenced, and the safety factor is higher; after the sealing effect is achieved by complete expansion, a permanent sealing state is achieved by grouting the interior of the sealing device, the sealing strength is further enhanced, and the sealing effect is consolidated.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the grouting pipe structure of the present invention;
fig. 3 is a first schematic view of the sleeve structure of the present invention;
fig. 4 is a schematic view of a sleeve structure of the present invention;
fig. 5 is a third schematic view of the sleeve structure of the present invention;
FIG. 6 is a schematic structural view of a grouting core tube according to the present invention;
FIG. 7 is an enlarged view of the structure at A of the present invention;
fig. 8 is an enlarged view of the structure at B of the present invention.
Reference numerals: 1. an air pump device; 2. grouting pump; 3. drilling a hole; 4. a segment wall; 5. a subway tunnel; 6. a grouting pipe; 61. a sleeve; 611. a valve tube; 612. a grout injection hole; 613. a rubber sleeve; 614. blocking air holes; 615. an air bag; 616. a one-way valve; 6161. a nylon valve needle; 6162. a valve seat; 6163. a limiting ring; 62. grouting a core pipe; 621. discharging the slurry inner pipe; 622. discharging the slurry flower tube; 623. a slurry outlet; 624. and (7) a plug.
Detailed Description
The following further describes a specific embodiment of the special drilling and plugging device for tunnels according to the present invention with reference to fig. 1 to 8. The utility model relates to a special drilling shutoff equipment in tunnel is not limited to the description of following embodiment.
Example 1:
the present embodiment provides a specific implementation of a special tunnel drilling and plugging device, as shown in fig. 1 to 8, including: the underground pipe grouting device comprises an inflating device 1 and a grouting pump 2, wherein the inflating device 1 and the grouting pump 2 are arranged on the ground, sequentially penetrate through the ground and a segment wall 4, are communicated with a subway tunnel 5, and are internally provided with a grouting pipe 6;
the inflating device 1 is connected with the air delivery hose in a screwed mode through threads, the grouting pump 2 is connected with the grouting pipe 6 in a screwed mode through threads, the air delivery hose is placed in the grouting pipe 6 in the inflating stage, the air delivery hose is drawn out after inflating is completed, and then the grouting pump 2 is used for grouting into the grouting pipe 6.
The grouting pipe 6 comprises a grouting core pipe 62 and a sleeve 61 sleeved on the outer side of the grouting core pipe, the sleeve comprises a plurality of valve pipes 611 connected end to end in sequence, adjacent valve pipes 611 are screwed by threads, the side wall of each valve pipe 611 is provided with a plurality of grouting holes 612, and the outer side of each valve pipe 611 is sleeved with a plurality of rubber sleeves 613;
the grouting core pipe 62 comprises a grout outlet inner pipe 621 and a grout outlet perforated pipe 622 at the lower end of the grout outlet inner pipe 621, a plurality of plugs 624 are arranged at the upper end and the lower end of the grout outlet perforated pipe 622, and a plurality of grout outlet holes 623 are formed in the grout outlet perforated pipe 622.
Further, the lower end of the sleeve is provided with an air blocking hole 614, a one-way valve 616 is arranged in the sleeve, and the bottom of the sleeve is sleeved with an air bag 615.
Further, the check valve 616 includes a nylon valve needle 6161, a valve seat 6162, and a limit ring 6163, the valve seat 6162 is disposed at the upper end of the air blocking hole 614, a vent hole is disposed at the center of the valve seat 6162, the nylon valve needle 6161 and the limit ring 6163 are sequentially disposed below the valve seat 6162, the lower end of the nylon valve needle 6161 is slidably connected with the upper end of the limit ring 6163, and a tapered structure matched with the vent hole is disposed at the upper end of the nylon valve needle 6161.
When the gas flows from top to bottom, the nylon valve needle is opened under the action of the self-flowing pressure of the gas and pushed to the limiting ring, and the one-way valve is communicated;
when the air flows reversely, the nylon valve needle is tightly pressed on the valve seat under the action of the pressure difference at the two ends of the check valve, and the check valve is in a stop state.
Further, the first section of the valve pipe 611 is provided with external threads, the tail end of the valve pipe 611 is provided with internal threads, and adjacent valve pipes 611 are connected in a screwing mode through the threads.
Furthermore, a plurality of groups of slurry injection holes 612 are distributed along the valve tube 611 array, and each two groups of slurry injection holes 612 are correspondingly provided with a rubber sleeve 613.
Further, three plugs 624 are arranged at the upper end of the grout outlet pipe 622, one plug 624 is arranged at the lower end of the grout outlet pipe 622, the plugs 624 are of a circular truncated cone-shaped structure, and the directions of the plugs 624 at the upper end and the lower end of the grout outlet pipe 622 are opposite.
Working principle, as shown in fig. 1-8:
1. manually assembling the sleeve 61, the inflating device 1 and the gas transmission hose and then putting the sleeve into the drilling hole 3;
2. and starting the inflating device 1, and transmitting the gas into the plugging air bag 615 of the lowest sleeve 61 through the gas transmission hose to expand the gas to abut against the pipe wall, so as to achieve the effect of temporarily closing the pipe piece wall hole.
3. The gas transmission hose is retracted to the ground;
4. connecting the grouting pipe 6 with the grouting pump 2;
5. placing the grouting core pipe 62 into the sleeve 61, and starting the grouting pump 2;
6. the slurry enters the grouting core pipe 62 and flows out of the slurry outlet hole 623 of the slurry outlet perforated pipe 622. When the slurry enters the middle of the casing 61 and the slurry outlet pipe 622, the rubber sleeve 613 is jacked up under pressure, and after the pressure reaches a certain degree along with the slurry accumulation, the rubber sleeve 613 on the outer side of the casing 61 is expanded, so that the slurry is squeezed into the formation. When grouting is stopped, the rubber sleeve 613 rebounds and wraps the sleeve 61 tightly to prevent fluid outside the pipe from entering the pipe, so that the function of a check valve is achieved;
7. the grouting core pipe 62 is uniformly grouted from bottom to top until the grouting core pipe reaches the ground, and the grouting core pipe is withdrawn after the whole grouting work is completed;
8. after the slurry is solidified, the operator enters the tunnel, takes out the plugging air bag 615, and further cures the open pore of the pipe wall.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (6)
1. A special tunnel drilling and plugging device is characterized by comprising: the underground pipe grouting device comprises an inflating device (1) and a grouting pump (2), wherein the inflating device (1) and the grouting pump (2) are arranged on the ground, a drilling hole (3) sequentially penetrates through the ground and a pipe piece wall (4) and is communicated with a subway tunnel (5), and a grouting pipe (6) is arranged in the drilling hole;
the grouting pipe (6) comprises a grouting core pipe (62) and a sleeve pipe (61) sleeved on the outer side of the grouting core pipe, the sleeve pipe comprises a plurality of valve pipes (611) which are sequentially connected end to end, adjacent valve pipes (611) are screwed by threads, the side wall of each valve pipe (611) is provided with a plurality of grouting holes (612), and the outer side of each valve pipe is sleeved with a plurality of rubber sleeves (613);
the grouting core pipe (62) comprises a slurry outlet inner pipe (621) and a slurry outlet perforated pipe (622) arranged at the lower end of the slurry outlet perforated pipe (622), a plurality of plugs (624) are arranged at the upper end and the lower end of the slurry outlet perforated pipe (622), and a plurality of slurry outlet holes (623) are formed in the slurry outlet perforated pipe (622).
2. The special tunnel drilling and plugging device according to claim 1, wherein: the lower end of the sleeve is provided with an air blocking hole (614), a one-way valve (616) is arranged in the sleeve, and the bottom of the sleeve is sleeved with an air bag (615).
3. The special tunnel drilling and plugging device according to claim 2, wherein: the check valve (616) comprises a nylon valve needle (6161), a valve seat (6162) and a limiting ring (6163), the valve seat (6162) is arranged at the upper end of the air blocking hole (614), a vent hole is formed in the center of the valve seat, the nylon valve needle (6161) and the limiting ring (6163) are sequentially arranged below the valve seat (6162), the lower end of the nylon valve needle (6161) is in sliding connection with the upper end of the limiting ring (6163), and a conical structure matched with the vent hole is arranged at the upper end of the nylon valve needle (6161).
4. The special tunnel drilling and plugging equipment as claimed in claim 1, wherein: the head section of the valve pipe (611) is provided with external threads, the tail end of the valve pipe is provided with internal threads, and the adjacent valve pipes (611) are connected in a screwing mode through the threads.
5. The special tunnel drilling and plugging device according to claim 1, wherein: the plurality of the slurry injecting holes (612) are distributed in a plurality of groups along the valve pipe (611) in an array mode, and each two groups of the slurry injecting holes (612) are correspondingly provided with a rubber sleeve (613).
6. The special tunnel drilling and plugging device according to claim 1, wherein: the upper end of the slurry outlet perforated pipe (622) is provided with three plugs (624), the lower end of the slurry outlet perforated pipe is provided with one plug (624), the plug (624) adopts a round table-shaped structure, and the directions of the plugs (624) at the upper end and the lower end of the slurry outlet perforated pipe (622) are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221906846.8U CN217813396U (en) | 2022-07-20 | 2022-07-20 | Special drilling plugging equipment for tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221906846.8U CN217813396U (en) | 2022-07-20 | 2022-07-20 | Special drilling plugging equipment for tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217813396U true CN217813396U (en) | 2022-11-15 |
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ID=83969188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221906846.8U Active CN217813396U (en) | 2022-07-20 | 2022-07-20 | Special drilling plugging equipment for tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217813396U (en) |
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2022
- 2022-07-20 CN CN202221906846.8U patent/CN217813396U/en active Active
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