CN211174123U - Tunnel hard rock heading machine and heading machine cutter head thereof - Google Patents
Tunnel hard rock heading machine and heading machine cutter head thereof Download PDFInfo
- Publication number
- CN211174123U CN211174123U CN201922042518.2U CN201922042518U CN211174123U CN 211174123 U CN211174123 U CN 211174123U CN 201922042518 U CN201922042518 U CN 201922042518U CN 211174123 U CN211174123 U CN 211174123U
- Authority
- CN
- China
- Prior art keywords
- pressure water
- heading machine
- cutter head
- water nozzle
- scraper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a hard rock entry driving machine of tunnel and entry driving machine blade disc thereof, entry driving machine blade disc includes: a cutter head (1); the hob (2) is arranged on the working surface of the cutter head (1); the high-pressure water nozzle (5) is arranged on the working surface of the cutter head (1); set up in the working face of blade disc (1) just is used for cleaing away scraper (6) of long-pending sediment, scraper (6) set up in the periphery of high pressure water nozzle (5). The utility model provides a heading machine blade disc still sets up the scraper that is used for cleaing away the long-pending sediment at the working face of blade disc, and the scraper sets up in the periphery of high pressure water nozzle, clears away the soil stone sediment between blade disc and the face, has guaranteed that the water jet of high pressure water nozzle spun can directly act on the face, effectively cuts the rock, has improved the broken rock efficiency of high pressure water, and then has improved tunnelling efficiency; the scraper prevents the accumulated slag from moving towards the high-pressure water nozzle, so that the hydraulic equipment (the high-pressure water nozzle) is effectively prevented from being blocked by the accumulated slag, and the service life of the nozzle is prolonged.
Description
Technical Field
The utility model relates to a entry driving machine equipment technical field, in particular to hard rock entry driving machine of tunnel and entry driving machine blade disc thereof.
Background
In diversion works across watershed and regions, a long Tunnel (such as the Tunnel length in south-to-north water diversion west line engineering exceeds 200km) is often the first choice of diversion (water transportation) buildings of the project, and in order to improve the Tunnel construction speed and shorten the project duration under the condition of limited terrain and geological conditions, the first choice of construction scheme is to adopt a Tunnel hard rock Tunnel Boring Machine (TBM) for construction. According to the statistics of the existing engineering data, the average monthly footage of the conventional TBM construction is 500-800 m, and the individual monthly footage of a few projects exceeds 1000 m. Therefore, the construction period of the long tunnel generally reaches several years to more than ten years, and the construction period of the existing TBM is severely limited by the construction efficiency.
At present, a high-pressure hydraulic jet auxiliary rock breaking technology is mature and widely applied to a rapid drilling technology in industries such as petroleum, coal and the like. The high-pressure hydraulic jet technology in the industries of petroleum, coal and the like is used for reference through absorption, and the tunneling technology and the high-pressure hydraulic jet technology of the traditional TBM are combined to form novel high-efficiency construction equipment of the TBM for high-pressure hydraulic auxiliary rock breaking. So as to improve the construction efficiency of the TBM, shorten the construction period and improve the economic benefit.
However, during the tunneling process, slag accumulation at the bottom of a cutter head of the TBM is common, and particularly, the slag accumulation is more serious when meeting a stratum with poor integrity of rock mass. Under the condition, the water jet formed by the high-pressure water nozzle firstly acts on the accumulated slag, so that the rock cannot be directly cut, the rock breaking effect of the high-pressure water is greatly influenced, and the tunneling efficiency is influenced; in addition, the accumulated slag may block hydraulic equipment (high-pressure water nozzles), which affects the service life of the high-pressure water nozzles.
Therefore, how to improve the tunneling efficiency and the service life is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a heading machine blade disc improves tunnelling efficiency and life. The utility model also provides a tunnel hard rock entry driving machine.
In order to achieve the above object, the utility model provides a following technical scheme:
a heading machine cutterhead, comprising:
a cutter head;
the hob is arranged on the working surface of the cutter head;
the high-pressure water nozzle is arranged on the working surface of the cutter disc;
the scraper is arranged on the working surface of the cutter head and used for removing accumulated slag, and the scraper is arranged on the periphery of the high-pressure water nozzle.
Alternatively, in the above-described heading machine cutterhead, the scrapers are provided on the front side in the advancing direction of the high-pressure water nozzles.
Optionally, in the cutterhead of the heading machine, the scraper is a dovetail scraper;
the forked tail scraper includes the triangle blade that two symmetries set up, two the first edge of triangle blade with the working face of blade disc is connected, two the second limit interconnect of triangle blade, the second border keep away from its with the direction of the nodical on first edge is to keeping away from the direction of the working face of blade disc extends, two the third edge orientation of triangle blade the high pressure water nozzle.
Optionally, in the heading machine cutterhead, the high-pressure water nozzles are arranged along the running track line of the hob;
or the high-pressure water nozzles are arranged on two sides of the running track line of the hob.
Optionally, in the heading machine cutterhead, a slag collecting port for collecting rock slag is arranged on the working surface of the cutterhead.
Optionally, in the heading machine cutter head, the number of the slag collecting ports is multiple and the slag collecting ports are symmetrically arranged at the edge of the working surface of the cutter head.
Optionally, in the heading machine cutterhead, the height of the scraper is lower than or equal to the height of the hob.
Optionally, in the heading machine cutter head, an outlet end of the high-pressure water nozzle extends out of a working surface of the cutter head, and an outlet end of the pressurized-water nozzle extends out to a height lower than that of the scraper;
or the outlet end of the high-pressure water nozzle is flush with the working surface of the cutter head.
The utility model also provides a tunnel hard rock entry driving machine, including the entry driving machine blade disc, the entry driving machine blade disc is as above-mentioned arbitrary entry the entry driving machine blade disc.
Optionally, in the above tunnel hard rock heading machine, further comprising:
the central rotary joint is communicated with the high-pressure water nozzle and is arranged at the rotation center of the heading machine cutter head;
the high-pressure pipeline is used for communicating the central rotary joint with the high-pressure water generating device;
and the high-pressure water nozzle is fixedly connected with the nozzle fixing frame.
The utility model provides a heading machine blade disc adopts high pressure water nozzle and hobbing cutter coupling, has effectively improved TBM's efficiency of construction, has shortened the time limit for a project, has improved economic benefits. In addition, a scraper for removing accumulated slag is arranged on the working surface of the cutter head, the scraper is arranged on the periphery of the high-pressure water nozzle to remove earth and stone slag between the cutter head and the face, so that the water jet sprayed by the high-pressure water nozzle can directly act on the face, rocks are effectively cut, the high-pressure water rock breaking efficiency is improved, and the tunneling efficiency is further improved; in addition, the scraper prevents the accumulated slag from moving towards the high-pressure water nozzle, so that the hydraulic equipment (the high-pressure water nozzle) is effectively prevented from being blocked by the accumulated slag, and the service life of the nozzle is prolonged. That is, the heading machine cutterhead provided by the embodiment of the utility model changes the situation that the periphery of the high-pressure water nozzle in the prior art does not have any protection device and only depends on the structural situation of TBM passive slag tapping, changes the situation into that the periphery of the high-pressure water nozzle is isolated by a physical component (scraper) in a hard way, and actively blocks the influence of accumulated slag on the high-pressure water nozzle, so that the high-pressure water jet is directly sprayed on the face to split and break rock, thereby ensuring the rock breaking effect of the water jet and simultaneously preventing the nozzle from being blocked; and the water jet of the high-pressure water nozzle assists in rock breaking, so that the penetration speed of the hob can be increased, the abrasion of the hob is reduced, the hob changing period of the hob is prolonged, the hob changing probability is reduced, the operation and maintenance cost of TBM equipment is saved, and the cost is saved for engineering.
The utility model also provides a tunnel hard rock entry driving machine, including the entry driving machine blade disc, the entry driving machine blade disc is as above-mentioned any kind of entry driving machine blade disc. Since the heading machine cutterhead has the technical effects, the tunnel hard rock heading machine with the heading machine cutterhead also has the same technical effects, and the detailed description is omitted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a heading machine cutter head in an embodiment of the present invention;
fig. 2 is a partial schematic view of a heading machine cutterhead according to an embodiment of the present invention;
fig. 3 is a partial sectional view of a heading machine cutter head according to an embodiment of the present invention;
fig. 4 is an overall sectional view of a heading machine cutter head according to an embodiment of the present invention.
Detailed Description
The utility model discloses a heading machine blade disc improves tunnelling efficiency and life. The utility model also provides a tunnel hard rock entry driving machine.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 4, an embodiment of the present invention provides a heading machine cutter head, including: a cutter head 1, a hob 2, a high-pressure water nozzle 5 and a scraper 6. The hob 2 and the high-pressure water nozzle 5 are both arranged on the working surface of the cutter head 1; the scraper 6 is arranged on the working surface of the cutter head 1 and used for removing accumulated slag, and the scraper 6 is arranged on the periphery of the high-pressure water nozzle 5.
The embodiment of the utility model provides a heading machine blade disc adopts high pressure water jet 5 and 2 couplings of hobbing cutter, has effectively improved TBM's efficiency of construction, has shortened the time limit for a project, has improved economic benefits. In addition, a scraper 6 for removing accumulated slag is arranged on the working surface of the cutter head 1, the scraper 6 is arranged on the periphery of the high-pressure water nozzle 5, and soil and stone slag between the cutter head and the face is removed, so that the water jet sprayed by the high-pressure water nozzle 5 can directly act on the face, rocks are effectively cut, the high-pressure water rock breaking efficiency is improved, and the tunneling efficiency is further improved; in addition, the scraper 6 blocks the accumulated slag from moving towards the high-pressure water nozzle 5, so that the hydraulic equipment (the high-pressure water nozzle 5) is effectively prevented from being blocked by the accumulated slag, and the service life of the nozzle is prolonged. Namely, the heading machine cutterhead provided by the embodiment of the utility model changes the situation that the periphery of the high-pressure water nozzle in the prior art does not have any protection device and only depends on the structural situation of TBM passive slag tapping, changes the situation into that the periphery of the high-pressure water nozzle 5 is isolated by a physical component (a scraper 6) in a hard way, and actively blocks the influence of accumulated slag on the high-pressure water nozzle 5, so that the high-pressure water jet is directly sprayed on the face to split and break rock, thereby ensuring the rock breaking effect of the water jet and simultaneously preventing the nozzle from being blocked; in addition, the water jet of the high-pressure water nozzle 5 assists in rock breaking, the penetration speed of the hob 2 can be improved, the abrasion of the hob 2 is reduced, the hob changing period of the hob 2 is prolonged, the probability of replacing the hob 2 is reduced, the operation and maintenance cost of TBM equipment is saved, and the cost is saved for engineering.
It is understood that the face is a term in the construction of tunnels. I.e. a working face where the excavation of a tunnel (in coal mining, mining or tunnelling) is constantly propelled forward. The accumulated slag is soil and stone slag falling between the cutter head and the tunnel face.
In this embodiment, the scraper 6 is provided on the front side in the advancing direction of the high-pressure water nozzle 5. Through the arrangement, the effect that the scraper 6 blocks the accumulated slag from moving towards the high-pressure water nozzle 5 is effectively optimized. The scraper 6 may be disposed outside the high-pressure water nozzle 5 or inside the high-pressure water nozzle 5, or even behind the high-pressure water nozzle 5, and may also function to prevent the deposited slag from moving toward the high-pressure water nozzle 5 to some extent.
The outer side of the high-pressure water nozzle 5 is a side away from the center of rotation of the cutter head 1, the inner side of the high-pressure water nozzle 5 is a side close to the center of rotation of the cutter head 1, and the rear side of the high-pressure water nozzle 5 is a rear side in the advancing direction of the high-pressure water nozzle 5.
As shown in fig. 2 and 3, the blade 6 is a dovetail blade; the forked tail scraper includes the triangle blade that two symmetries set up, and the first limit of two triangle blades is connected with the working face of blade disc 1, and the second limit interconnect of two triangle blades, the second border is kept away from its direction of nodical with first limit and is extended to the direction of keeping away from the working face of blade disc 1, and the third edge of two triangle blades is towards high pressure water jet 5. Wherein, the direction of an arrow in fig. 2 is the advancing direction of the heading machine cutterhead. Through the arrangement, the effect that the scraper 6 blocks accumulated slag from moving towards the high-pressure water nozzle 5 is further improved, the intersection point of the first edge and the second edge of the two triangular blades faces the advancing direction of the heading machine cutter head, the effects of blocking and scraping the accumulated slag can be effectively improved, and the probability of damage to the scraper 6 is reduced.
In this embodiment, the high pressure water nozzle 5 is located in the projection of the angle formed by the third edges of the two triangular blades. Wherein, the projection is the projection of the included angle formed by the third edge to the working surface direction of the cutter head 1. Through the arrangement, the high-pressure water jet sprayed by the high-pressure water nozzle 5 is ensured not to flow out due to the blockage of the scraper 6, the high-pressure water nozzle 5 can be close to the scraper 6 as much as possible, the front side, the inner side and the outer side of the high-pressure water nozzle 5 are protected by the scraper 6, and the accumulated slag is blocked from moving towards the high-pressure water nozzle 5 in three directions.
In one embodiment, the high pressure water nozzles 5 are arranged along the path of travel 4 of the hob 2. Through the arrangement, the high-pressure water nozzles 5 assist the hob 2 to act together on the tunnel face area corresponding to the operation trajectory line 4 to perform rock breaking operation.
In another embodiment, high pressure water nozzles 5 are arranged on both sides of the path line 4 of the hob 2. That is, the high-pressure water nozzles 5 are applied to the corresponding face areas on both sides of the running track line 4, and the hob 2 is applied to the corresponding face area of the running track line 4, thereby realizing the rock breaking operation.
In this embodiment, the working surface of the cutter head 1 is provided with a slag collecting port 3 for collecting rock slag. Through setting up collection cinder notch 3 to in the collection of the formula of leading is carried out to the rock sediment, and will excavate the high-efficient TBM of sending to of rock sediment and fight, also further reduced simultaneously and dropped the long-pending sediment and to the hindrance of high pressure water jet 5 and hobbing cutter 2. Wherein, the rock slag comprises the accumulated slag and also comprises earth and stone slag which does not fall between the cutter head and the tunnel face.
The embodiment of the utility model provides an in the entry driving machine blade disc, the quantity of collection sediment mouth 3 sets up in the edge of 1 working face of blade disc for a plurality of and symmetry. In this embodiment, the number of the slag collecting ports 3 is four. Other numbers may also be provided. The slag collecting opening 3 is arranged at the edge of the working surface of the cutter head 1, so that the accumulated slag under the centrifugal action can be collected more favorably.
As shown in fig. 4, in order to increase the service life of the doctor blade 6, the height of the doctor blade 6 is lower than or equal to the height of the hob 2. Wherein, the height of the scraper 6 is the farthest distance between the scraper 6 and the working surface of the cutter head 1; the height of the hob 2 is the farthest distance of the hob 2 from the working surface of the cutterhead 1.
In this embodiment, the outlet end of the high-pressure water nozzle 5 extends out of the working surface of the cutter head 1, and the extending height of the outlet end of the high-pressure water nozzle 5 is lower than that of the scraper 6. The fixing strength of the high-pressure water nozzles 5 is ensured by extending the outlet ends of the high-pressure water nozzles 5 out of the working surface of the cutter head 1.
It is also possible to level the outlet end of the high pressure water nozzle 5 with the working surface of the cutterhead 1. It is also possible to make the outlet end of the high-pressure water nozzle 5 converge into the impeller 1 without exceeding the working surface of the impeller 1.
The utility model also provides a tunnel hard rock entry driving machine, including the entry driving machine blade disc, the entry driving machine blade disc is as above-mentioned any kind of entry driving machine blade disc. Since the heading machine cutterhead has the technical effects, the tunnel hard rock heading machine with the heading machine cutterhead also has the same technical effects, and the detailed description is omitted.
The embodiment of the utility model provides a hard rock entry driving machine of tunnel still includes central rotary joint, high-pressure line and nozzle mount. The central rotary joint is communicated with the high-pressure water nozzle 5 and is arranged at the rotation center of the cutter head of the heading machine; the high-pressure pipeline is used for communicating the central rotary joint with the high-pressure water generating device; the nozzle fixing frame is arranged on the back of the heading machine cutterhead, and the high-pressure water nozzle 5 is fixedly connected with the nozzle fixing frame. Through the arrangement, the high-pressure water nozzle 5 can stably spray water jet in the rotation process of the heading machine cutter head.
The high-pressure water generating device is arranged in a pulley (such as a No. 1 pulley) matched behind the tunnel hard rock heading machine, and consists of a filtering system, a booster plunger pump, a voltage stabilizer, a power motor and a control system. The high-pressure pipeline used in the connecting area of the rear part of the tunnel hard rock heading machine and the main machine and the connecting area of the main drive and the heading machine cutter head is a high-pressure hose, and the high-pressure pipeline used in other parts is a high-pressure hard pipe.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A heading machine cutterhead, comprising:
a cutter head (1);
the hob (2) is arranged on the working surface of the cutter head (1);
the high-pressure water nozzle (5) is arranged on the working surface of the cutter head (1);
set up in the working face of blade disc (1) just is used for cleaing away scraper (6) of long-pending sediment, scraper (6) set up in the periphery of high pressure water nozzle (5).
2. Heading machine cutterhead according to claim 1, characterized in that the scrapers (6) are arranged in front of the direction of advance of the high pressure water nozzles (5).
3. A heading machine cutterhead according to claim 2, wherein the blades (6) are dovetail blades;
the forked tail scraper includes the triangle blade that two symmetries set up, two the first edge of triangle blade with the working face of blade disc (1) is connected, two the second limit interconnect of triangle blade, the second border keep away from its with the direction of the nodical on first edge is to keeping away from the direction of the working face of blade disc (1) extends, two the third edge orientation of triangle blade high pressure water nozzle (5).
4. A heading machine cutterhead according to any one of claims 1-3, wherein said high pressure water nozzles (5) are arranged along the path of travel (4) of said hob (2);
or the high-pressure water nozzles (5) are arranged on two sides of the running track line (4) of the hob (2).
5. A heading machine cutterhead according to claim 1, wherein the working face of the cutterhead (1) is provided with a slag collection port (3) for collecting rock slag.
6. The heading machine cutterhead according to claim 5, wherein the number of the slag collection ports (3) is plural and is symmetrically arranged at the edge of the working face of the cutterhead (1).
7. A heading machine cutterhead according to claim 1, wherein the height of the scrapers (6) is less than or equal to the height of the roller cutters (2).
8. The heading machine cutterhead according to claim 1, wherein the outlet end of the high pressure water nozzle (5) extends beyond the working face of the cutterhead (1), and the outlet end of the water pressure nozzle (5) extends to a height lower than the height of the scraper (6);
or the outlet end of the high-pressure water nozzle (5) is flush with the working surface of the cutter head (1).
9. A tunnel hard rock heading machine comprising a heading machine cutter head, wherein the heading machine cutter head is as claimed in any one of claims 1 to 8.
10. A tunnel hard rock ripper as recited in claim 9, further comprising:
the central rotary joint is communicated with the high-pressure water nozzle (5), and is arranged at the rotation center of the heading machine cutter head;
the high-pressure pipeline is used for communicating the central rotary joint with the high-pressure water generating device;
the nozzle fixing frame is arranged on the back face of the heading machine cutter head, and the high-pressure water nozzle (5) is fixedly connected with the nozzle fixing frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922042518.2U CN211174123U (en) | 2019-11-21 | 2019-11-21 | Tunnel hard rock heading machine and heading machine cutter head thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922042518.2U CN211174123U (en) | 2019-11-21 | 2019-11-21 | Tunnel hard rock heading machine and heading machine cutter head thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211174123U true CN211174123U (en) | 2020-08-04 |
Family
ID=71796374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922042518.2U Active CN211174123U (en) | 2019-11-21 | 2019-11-21 | Tunnel hard rock heading machine and heading machine cutter head thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211174123U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483109A (en) * | 2020-11-04 | 2021-03-12 | 中国科学院武汉岩土力学研究所 | Rock breaking method of cutter head based on oblique cutting angle high-pressure water jet spatial and temporal arrangement |
| CN112483108A (en) * | 2020-11-04 | 2021-03-12 | 中国科学院武汉岩土力学研究所 | Cutter head based on oblique cutting angle high-pressure water jet space-time arrangement |
-
2019
- 2019-11-21 CN CN201922042518.2U patent/CN211174123U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483109A (en) * | 2020-11-04 | 2021-03-12 | 中国科学院武汉岩土力学研究所 | Rock breaking method of cutter head based on oblique cutting angle high-pressure water jet spatial and temporal arrangement |
| CN112483108A (en) * | 2020-11-04 | 2021-03-12 | 中国科学院武汉岩土力学研究所 | Cutter head based on oblique cutting angle high-pressure water jet space-time arrangement |
| CN112483109B (en) * | 2020-11-04 | 2022-02-15 | 中国科学院武汉岩土力学研究所 | Rock breaking method of cutter head based on oblique cutting angle high-pressure water jet spatial and temporal arrangement |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110700849A (en) | Tunnel hard rock heading machine and heading machine cutter head thereof | |
| CN211174123U (en) | Tunnel hard rock heading machine and heading machine cutter head thereof | |
| CN110206546B (en) | Shaft cutter head, shaft heading machine and shaft drilling machine | |
| CN102926761B (en) | Double-mode cutterhead suitable for long-distance and great-gradient inclined well tunnel construction | |
| CN107387104B (en) | Jet shield tunneling machine and tunneling method | |
| CN110410093A (en) | A kind of high pressure water cavitation broken rock TBM and its construction method | |
| CN109139028B (en) | Arc-cutting shield tunneling machine cutterhead | |
| CN212359762U (en) | High-speed intelligent shield constructs machine | |
| CN210564541U (en) | Quick heading machine | |
| CN205895247U (en) | A single shield TBM blade disc for sandstone mud stone | |
| CN109899079A (en) | The TBM cutterhead for having PDC drill bit auxiliary rock | |
| JP6192627B2 (en) | Shield excavator cutter head | |
| CN211342922U (en) | High-pressure water jet side cutter and hydraulic-mechanical combined rock breaking and trapped-escaping TBM cutter head | |
| CN111058852A (en) | High-speed intelligent shield constructs machine | |
| CN107420107B (en) | Shield tunneling machine for tunnel construction | |
| CN112709579A (en) | Quick-forming development machine for river and canal | |
| CN109611108A (en) | A kind of improved method of slurry shield machine circulation scouring system | |
| CN215170020U (en) | TBM cutter head slag feeding limiting device | |
| CN214196321U (en) | Soil pressure balance shield cutter head for water-rich round gravel stratum | |
| JP2009293205A (en) | Tunnel excavation method | |
| CN204703910U (en) | A kind of cutter head of shield machine structure | |
| CN218062318U (en) | Muddy water balance type rectangular pipe jacking machine | |
| CN112282777A (en) | Strong eddy pulse jet system for shield machine | |
| CN217870683U (en) | Trench excavation device for pipe network construction | |
| CN212296386U (en) | Orphan stone cleaning device of development machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |