CN116122831A - Miniature muddy water soil pressure dual-mode shield structure - Google Patents
Miniature muddy water soil pressure dual-mode shield structure Download PDFInfo
- Publication number
- CN116122831A CN116122831A CN202310205747.XA CN202310205747A CN116122831A CN 116122831 A CN116122831 A CN 116122831A CN 202310205747 A CN202310205747 A CN 202310205747A CN 116122831 A CN116122831 A CN 116122831A
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- Prior art keywords
- screw machine
- muddy water
- miniature
- mounting
- soil pressure
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 239000002689 soil Substances 0.000 title claims abstract description 41
- 238000007599 discharging Methods 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 230000008676 import Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 5
- 239000004575 stone Substances 0.000 abstract description 5
- 238000009412 basement excavation Methods 0.000 abstract description 2
- 239000010802 sludge Substances 0.000 description 7
- 230000005641 tunneling Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
- E21D9/087—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/124—Helical conveying means therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/13—Devices for removing or hauling away excavated material or spoil; Working or loading platforms using hydraulic or pneumatic conveying means
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a miniature muddy water-soil pressure dual-mode shield structure, relates to the technical field of shield machines, and solves the problems that when a shield machine is used, the shield machine is difficult to adapt to excavation under different environments, a collecting device for soil and muddy water cannot be switched generally, and the excavated muddy water and soil broken stone are easy to leak into the front shield to influence the normal operation of the device. The utility model provides a miniature muddy water soil pressure bimodulus shield structure, includes the blade disc, the rear side movable mounting of blade disc has the front shield. According to the invention, through the cooperation of the screw machine and the mud discharging pipe, the device can select the screw machine or the mud discharging pipe to suck according to actual requirements, when the screw machine is needed to be used, the screw machine can be directly installed at the position of the installation hole of the screw machine, and when the mud discharging pipe is needed to be used, the installation hole of the screw machine is blocked by the sealing disc, so that the device can pump mud water through the mud discharging pipe.
Description
Technical Field
The invention relates to the technical field of shield machines, in particular to a miniature muddy water soil pressure dual-mode shield structure.
Background
The shield tunneling machine is a tunnel tunneling machine using a shield tunneling method. The construction method of the shield is that the tunneling machine constructs a 'shield' of a tunnel while tunneling, and is different from an open construction method, and soil and muddy water are collected in areas with harder soil and lower water content or areas with higher water content by different methods;
the basic working principle of the shield tunneling machine is that a cylindrical steel component excavates soil while pushing forward along the axis of a tunnel. The shell of the cylinder assembly, i.e. the shield, serves as a temporary support for the excavated, as yet unlined tunnel section, withstanding the pressure of the surrounding earth layer and sometimes also the groundwater pressure and keeping the groundwater out. The operations of digging, discharging soil, lining and the like are carried out under the shield of the shield.
When the existing shield machine is used, the excavating under different environments is difficult to adapt at the same time, the collecting devices of soil and muddy water cannot be switched, and the excavated muddy water and soil broken stone easily leaks into the front shield to influence the normal operation of the device; therefore, the existing requirements are not met, and a miniature muddy water soil pressure dual-mode shield structure is provided.
Disclosure of Invention
The invention aims to provide a miniature muddy water-soil pressure dual-mode shield structure, which aims to solve the problems that when the shield machine provided in the background art is used, the shield machine is difficult to adapt to excavation under different environments, the earth and muddy water collecting devices cannot be switched generally, and the excavated muddy water and earth broken stone are easy to leak into the front shield to influence the normal operation of the device.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a miniature muddy water soil pressure bimodulus shield structure, includes the blade disc, the rear side movable mounting of blade disc has the front shield, the rear side movable mounting of front shield has the shield body, the front shield is connected with the blade disc one side movable mounting has the mounting disc, the position movable mounting that the mounting disc rear side surface is close to the bottom has the mud pipe, the rear side surface movable mounting of mounting disc has the screw machine.
Preferably, a screw machine mounting hole is formed in the position, close to the lower side, of the surface of the mounting disc, the screw machine is movably clamped into the screw machine mounting hole, and a sealing disc for sealing the screw machine mounting hole is detachably arranged on the mounting disc.
Preferably, one side of the screw machine is provided with a screw machine inlet, the other side of the screw machine is provided with a screw machine outlet, a screw machine valve is movably arranged in the screw machine outlet, a screw machine pull rod is movably arranged on the outer surface of the screw machine, a rotating shaft is movably arranged in the screw machine, a plurality of transmission plates are movably arranged on the outer surface of the rotating shaft, and a hydraulic motor is arranged on the outer side of the screw machine.
Preferably, the position that the mounting disc surface is close to the bottom is equipped with two mud hole, the inside of mud hole is all movable mounting has the mud pipe, the inside that the mud pipe activity runs through the shield body extends to the rear side, the end position of mud pipe is equipped with the dredge pump.
Preferably, a groove is arranged on the sealing disc; an O-shaped sealing ring is arranged in the groove.
Preferably, two grouting pipes are arranged on one side of the surface of the mounting plate, which is positioned on the mud discharging hole, and water pipes are arranged on one side of each grouting pipe.
Preferably, the center position of the mounting plate is provided with a center revolving body, six hydraulic motors are uniformly distributed on the surface of the rear side of the mounting plate, a pedestrian gate is movably mounted on one side of the surface of the mounting plate, and a soil pressure sensor is movably mounted on the other side of the surface of the mounting plate.
Preferably, a center hob is movably arranged at the center of the surface of the cutterhead, a plurality of double-edge hobs are movably arranged on the surface of the cutterhead, a plurality of single-edge hobs are movably arranged on the outer side of the cutterhead, and three edge hobs are movably arranged on the surface of the cutterhead.
Preferably, the rear side surface of the mounting plate is movably provided with a plurality of driving plates.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the cooperation of the screw machine and the mud discharging pipe, when the device is used for excavating a region with harder soil and smaller water quantity, the broken stone soil and the like are positioned between the cutter head and the front shield after the cutting is carried out through the center hob, the double-blade hob, the single-blade hob and the edge hob, the broken stone soil can be transported to a rear designated place through the screw machine at the moment, so that the region with harder soil is conveniently excavated, when the device is used for excavating a region with larger water content, mud is formed after the soil is cut through the cutter head and enters the lower position of the front shield along the mud discharging hole, then the mud can be extracted through the cooperation of the mud discharging pump and the mud discharging pipe, so that the device can work normally, the device can conveniently excavate the region with larger water content, the screw machine or the mud discharging pipe can be selected according to actual requirements, when the screw machine is required to be used, the screw machine can be directly installed to the position of the screw machine mounting hole, when the mud discharging pipe is required to be used, the screw machine can be firstly removed from the inside of the screw machine mounting hole, and then the mud discharging hole can be extracted through the sealing disc;
drawings
FIG. 1 is a front view of a cutterhead of the present invention;
FIG. 2 is a rear view of the front shield of the present invention;
FIG. 3 is a cross-sectional side view of the invention with the screw integrally mounted;
FIG. 4 is a cross-sectional side view of the present invention with the sludge discharge pipe integrally installed;
FIG. 5 is a partial cross-sectional side view of the invention 33;
fig. 6 is a schematic partial structure of the portion a of the present invention.
In the figure: 1. a cutterhead; 2. a center hob; 3. double-edge hob; 4. a single-blade hob; 5. a mounting plate; 6. an edge hob; 7. a hydraulic motor; 8. a soil pressure sensor; 9. front shield; 10. grouting pipe; 11. a water pipe; 12. a center revolving body; 13. a manway gate; 14. a screw machine mounting hole; 15. a drive plate; 16. a shield body; 17. a mud pipe; 18. a screw machine pull rod; 19. an outlet of the screw machine; 20. a screw machine valve; 21. a rotating shaft; 22. a drive plate; 23. an inlet of the screw machine; 24. a sealing plate; 25. a groove; 26. an O-shaped sealing ring; 33. a screw machine; 34. mud discharging holes.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1 to 6, an embodiment of the present invention provides: the utility model provides a miniature muddy water soil pressure bimodulus shield structure, includes blade disc 1, and the rear side movable mounting of blade disc 1 has shield 9, and the rear side movable mounting of shield 9 has shield body 16, and the one side movable mounting that shield 9 and blade disc 1 are connected has mounting disc 5, and the position movable mounting that is close to the bottom of mounting disc 5 rear side surface has mud pipe 17, and the rear side surface movable mounting of mounting disc 5 has screw 33.
Through adopting above-mentioned technical scheme, through the cooperation of screw machine 33 and mud pipe 17, make the device when using, when the device is in the region of harder to the soil property, the water yield is less in the region of cutting through center hobbing cutter 2, double-bladed hobbing cutter 3, single-bladed hobbing cutter 4 and edge hobbing cutter 6, rubble earth etc. can be in between tool bit and the front shield 9, can transport rubble earth to the appointed place at rear through screw machine 33 this moment, thereby conveniently excavate the region of harder to the soil property, when the device excavates the region of great water content, the earth forms muddy water after cutting through blade disc 1, and get into the lower part position of front shield 9 along mud hole 34, can make the muddy water follow the cooperation of mud pump and mud pipe 17 and extract, so that guarantee the device normally works, make the device excavate the region of great water content, and then make the device can select screw machine 33 or mud pipe 17 to suck according to actual demand, when need use screw machine 33, can install screw machine 33 to the position of screw machine installation hole 14 directly, when need use the mud pipe 17, can be followed by sealing up the hole of screw machine 14 and then be installed to the mud pipe 14 through the screw machine is installed to the sealed hole of hole 14 when need use mud pipe 17 to drain hole 24.
Further, a screw machine mounting hole 14 is formed in a position, close to the lower side, of the surface of the mounting plate 5, a screw machine 33 is movably clamped into the screw machine mounting hole 14, and a sealing plate 24 for sealing the screw machine mounting hole 14 is detachably arranged on the mounting plate 5.
Through adopting above-mentioned technical scheme, through sealing disk 24, when the device needs to use mud pipe 17 to carry out the extraction to muddy water, can install sealing disk 24 on mounting disc 5, block up screw machine installation hole 14 to make muddy water can not get into the inside of shield 9 through screw machine installation hole 14, prevent that muddy water from influencing the normal operation of device.
Further, one side of the screw 33 is provided with a screw inlet 23, the other side of the screw 33 is provided with a screw outlet 19, a screw valve 20 is movably mounted in the screw outlet 19, a screw pull rod 18 is movably mounted on the outer surface of the screw 33, a rotating shaft 21 is movably mounted in the screw 33, a plurality of transmission plates 22 are movably mounted on the outer surface of the rotating shaft 21, and a hydraulic motor is arranged on the outer side of the screw 33.
Further, two sludge discharge holes 34 are formed in the surface of the mounting plate 5 near the bottom end, a sludge discharge pipe 17 is movably mounted in each sludge discharge hole 34, the sludge discharge pipe 17 movably penetrates through the interior of the shield body 16 to extend to the rear side, and a sludge discharge pump is arranged at the tail end of the sludge discharge pipe 17.
Further, a groove 25 is provided on the sealing disk; an O-ring 26 is provided in the groove. By the above arrangement, the sealing effect of the sealing disk 24 against the screw mounting hole 14 can be ensured.
Further, two grouting pipes 10 are arranged on one side of the surface of the mounting plate 5, which is positioned on the mud discharging hole 34, and water pipes 11 are arranged on one side of each grouting pipe 10.
By adopting the technical scheme, the grouting pipe 10 and the water pipe 11 can wash the mud before the mud enters the mud pipe 17 in the mud hole 34, so that the mud is prevented from being blocked in the mud pipe 17 by harder mud or fragments.
Further, a central revolving body 12 is arranged at the central position of the mounting plate 5, six hydraulic motors 7 are uniformly distributed on the rear side surface of the mounting plate 5, a pedestrian gate 13 is movably mounted on one side of the surface of the mounting plate 5, and a soil pressure sensor 8 is movably mounted on the other side of the surface of the mounting plate 5.
Further, a central hob 2 is movably arranged in the center of the surface of the cutterhead 1, a plurality of double-edge hobs 3 are movably arranged on the surface of the cutterhead 1, a plurality of single-edge hobs 4 are movably arranged on the outer side of the cutterhead 1, and three edge hobs 6 are movably arranged on the surface of the cutterhead 1.
Through adopting above-mentioned technical scheme, through the setting of a plurality of hobbing cutter, make the device can make the finer of earth cutting prevent that there is great earth fragment to cause the condition of jam when cutting soil.
Further, the rear side surface of the mounting plate 5 is movably mounted with a plurality of driving plates 15.
Working principle: during the use, through the cooperation of screw 33 and mud pipe 17, make the device when using, when the device is in the region of harder to the soil property, the water yield is less when excavated, after cutting through center hobbing cutter 2, double-bladed hobbing cutter 3, single-bladed hobbing cutter 4 and edge hobbing cutter 6, rubble earth etc. can be in between tool bit and the front shield 9, can transport the appointed place at rear through screw 33 this moment, thereby conveniently excavate the region of harder to the soil property, when the device is excavated the region of having great water content, soil forms muddy water after cutting through blade disc 1, and get into the lower part of front shield 9 along mud hole 34, can make the muddy water follow the cooperation of mud pump and mud pipe 17 and extract, in order to guarantee the normal work of device, make things convenient for the device to excavate the region of great water content, and then make the device can select screw 33 or mud pipe 17 to suck according to actual demand, when need use screw 33, can install screw 33 to screw mounting hole 14's position, when need use mud pipe 17, can be followed by sealing up the screw mounting screw 33 and removing the mud hole 14 through screw mounting hole 24 and then can be followed by sealing up the mud hole 14 to the device through the sealed hole 17.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. The utility model provides a miniature muddy water soil pressure bimodulus shield structure, includes blade disc (1), its characterized in that: the novel cutter head is characterized in that a front shield (9) is movably mounted on the rear side of the cutter head (1), a shield body (16) is movably mounted on the rear side of the front shield (9), a mounting disc (5) is movably mounted on one side, connected with the cutter head (1), of the front shield (9), a mud discharging pipe (17) is movably mounted on the rear side surface of the mounting disc (5) close to the bottom end, and a screw machine (33) is movably mounted on the rear side surface of the mounting disc (5).
2. The miniature muddy water soil pressure dual-mode shield structure according to claim 1, wherein: the screw machine is characterized in that screw machine mounting holes (14) are formed in the position, close to the lower portion, of the surface of the mounting disc (5), the screw machine (33) is movably clamped into the screw machine mounting holes (14), and sealing discs for sealing the screw machine mounting holes (14) are detachably arranged on the mounting disc (5).
3. The miniature muddy water soil pressure dual-mode shield structure according to claim 1, wherein: one side of screw machine (33) is equipped with screw machine import (23), the opposite side of screw machine (33) is equipped with screw machine export (19), the inside movable mounting of screw machine export (19) has screw machine valve (20), the surface movable mounting of screw machine (33) has screw machine pull rod (18), the inside movable mounting of screw machine (33) has pivot (21), the surface movable mounting of pivot (21) has a plurality of drive plates (22), the outside of screw machine (33) is equipped with hydraulic motor.
4. The miniature muddy water soil pressure dual-mode shield structure according to claim 1, wherein: the position that the surface of the mounting plate (5) is close to the bottom is provided with two mud discharging holes (34), the inside of mud discharging holes (34) is movably provided with a mud discharging pipe (17), the mud discharging pipe (17) movably penetrates through the inside of the shield body (16) to extend to the rear side, and the tail end position of the mud discharging pipe (17) is provided with a mud discharging pump.
5. The miniature muddy water soil pressure dual-mode shield structure according to claim 2, wherein: a groove is arranged on the sealing disc; an O-shaped sealing ring is arranged in the groove.
6. The miniature muddy water soil pressure dual-mode shield structure according to claim 1, wherein: two grouting pipes (10) are arranged on one side of the surface of the mounting plate (5) located at the mud discharging hole (34), and water pipes (11) are arranged on one side of each grouting pipe (10).
7. The miniature muddy water soil pressure dual-mode shield structure according to claim 1, wherein: the center position of the mounting plate (5) is provided with a center revolving body (12), six hydraulic motors (7) are uniformly distributed on the surface of the rear side of the mounting plate (5), a pedestrian gate (13) is movably mounted on one side of the surface of the mounting plate (5), and a soil pressure sensor (8) is movably mounted on the other side of the surface of the mounting plate (5).
8. The miniature muddy water soil pressure dual-mode shield structure according to claim 1, wherein: the center position of the surface of the cutter disc (1) is movably provided with a center hob (2), the surface of the cutter disc (1) is movably provided with a plurality of double-edge hob (3), the outer side of the cutter disc (1) is movably provided with a plurality of single-edge hob (4), and the surface of the cutter disc (1) is movably provided with three edge hob (6).
9. The miniature muddy water soil pressure dual-mode shield structure according to claim 1, wherein: a plurality of driving disks (15) are movably arranged on the rear side surface of the mounting disk (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310205747.XA CN116122831A (en) | 2023-03-06 | 2023-03-06 | Miniature muddy water soil pressure dual-mode shield structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310205747.XA CN116122831A (en) | 2023-03-06 | 2023-03-06 | Miniature muddy water soil pressure dual-mode shield structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116122831A true CN116122831A (en) | 2023-05-16 |
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ID=86299241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310205747.XA Pending CN116122831A (en) | 2023-03-06 | 2023-03-06 | Miniature muddy water soil pressure dual-mode shield structure |
Country Status (1)
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|---|---|
| CN (1) | CN116122831A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005188218A (en) * | 2003-12-26 | 2005-07-14 | Shimizu Corp | Muddy water/earth pressure type composite shield machine |
| JP2006070685A (en) * | 2004-08-05 | 2006-03-16 | Ohbayashi Corp | Earth pressure shield, slurry shield and closed shield |
| CN202970722U (en) * | 2012-11-14 | 2013-06-05 | 广东华隧建设股份有限公司 | Double-mode shield tunneling machine |
| CN204140080U (en) * | 2014-09-12 | 2015-02-04 | 广东华隧建设股份有限公司 | A kind of double-screw type bimodulus shield machine |
| CN110985024A (en) * | 2019-11-29 | 2020-04-10 | 中铁工程装备集团有限公司 | Double-mode front shield structure for soil-pressing muddy water |
| CN111594192A (en) * | 2020-05-27 | 2020-08-28 | 重庆交通建设(集团)有限责任公司 | Double-mode switching shield tunneling machine system |
| JP2020139320A (en) * | 2019-02-28 | 2020-09-03 | 大成建設株式会社 | Shield excavator and shield construction method |
| CN214247332U (en) * | 2021-01-22 | 2021-09-21 | 安徽建筑大学 | Novel muddy water soil pressure double mode shield constructs device |
| AU2021290425A1 (en) * | 2021-06-29 | 2023-01-19 | China Railway Engineering Equipment Group Co., Ltd | Slurry open dual-mode shield machine equipped with cutter head with atmospheric pressure |
| CN115726806A (en) * | 2022-12-07 | 2023-03-03 | 中交天和机械设备制造有限公司 | Slag discharging system of slurry TBM dual-mode shield tunneling machine and switching slag discharging method thereof |
-
2023
- 2023-03-06 CN CN202310205747.XA patent/CN116122831A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005188218A (en) * | 2003-12-26 | 2005-07-14 | Shimizu Corp | Muddy water/earth pressure type composite shield machine |
| JP2006070685A (en) * | 2004-08-05 | 2006-03-16 | Ohbayashi Corp | Earth pressure shield, slurry shield and closed shield |
| CN202970722U (en) * | 2012-11-14 | 2013-06-05 | 广东华隧建设股份有限公司 | Double-mode shield tunneling machine |
| CN204140080U (en) * | 2014-09-12 | 2015-02-04 | 广东华隧建设股份有限公司 | A kind of double-screw type bimodulus shield machine |
| JP2020139320A (en) * | 2019-02-28 | 2020-09-03 | 大成建設株式会社 | Shield excavator and shield construction method |
| CN110985024A (en) * | 2019-11-29 | 2020-04-10 | 中铁工程装备集团有限公司 | Double-mode front shield structure for soil-pressing muddy water |
| CN111594192A (en) * | 2020-05-27 | 2020-08-28 | 重庆交通建设(集团)有限责任公司 | Double-mode switching shield tunneling machine system |
| CN214247332U (en) * | 2021-01-22 | 2021-09-21 | 安徽建筑大学 | Novel muddy water soil pressure double mode shield constructs device |
| AU2021290425A1 (en) * | 2021-06-29 | 2023-01-19 | China Railway Engineering Equipment Group Co., Ltd | Slurry open dual-mode shield machine equipped with cutter head with atmospheric pressure |
| CN115726806A (en) * | 2022-12-07 | 2023-03-03 | 中交天和机械设备制造有限公司 | Slag discharging system of slurry TBM dual-mode shield tunneling machine and switching slag discharging method thereof |
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Application publication date: 20230516 |