CN109630148B - Double-thrust multi-cutterhead tunnel boring machine and boring method thereof - Google Patents
Double-thrust multi-cutterhead tunnel boring machine and boring method thereof Download PDFInfo
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- CN109630148B CN109630148B CN201811358602.9A CN201811358602A CN109630148B CN 109630148 B CN109630148 B CN 109630148B CN 201811358602 A CN201811358602 A CN 201811358602A CN 109630148 B CN109630148 B CN 109630148B
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000005641 tunneling Effects 0.000 claims abstract description 31
- 239000002893 slag Substances 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 12
- 239000004567 concrete Substances 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 32
- 239000010959 steel Substances 0.000 claims description 32
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 9
- 238000009412 basement excavation Methods 0.000 claims description 8
- 239000011435 rock Substances 0.000 claims description 8
- 239000011178 precast concrete Substances 0.000 claims description 7
- 235000007164 Oryza sativa Nutrition 0.000 claims description 5
- 235000009566 rice Nutrition 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 4
- 240000007594 Oryza sativa Species 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 6
- 241000209094 Oryza Species 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
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- 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
- E21D9/0873—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 the shield being provided with devices for lining the tunnel, e.g. shuttering
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a double-thrust multi-cutterhead tunnel boring machine and a tunneling method thereof, which solve the problems of large mode conversion workload, long time and high manufacturing cost of a dual-mode tunnel boring machine in the prior art. The invention comprises a tunneling system, a pipe piece assembling machine system and a slag discharging system, wherein the tunneling system comprises a shield body, a cutter head body and a rice-shaped beam are arranged in the shield body, a plurality of split cutter heads are arranged at the front end of the cutter head body, a pipe piece assembling machine, an arch frame installing device for installing a second thrust mechanism and a concrete spraying device are arranged on the rice-shaped beam, the pipe piece assembling machine is positioned in front of the arch frame installing device, the concrete spraying device is arranged above the arch frame installing device, a propelling oil cylinder is arranged on the circumference of an outer ring of the rice-shaped beam, and the split cutter heads correspond to the slag discharging system. The invention adopts the design of double-thrust multi-cutter, the cutter replaces a large cutter by a plurality of split cutters, the corresponding driving mode is changed into an independent driving mode, and the design of the cutter greatly reduces the manufacturing cost of the cutter.
Description
Technical Field
The invention relates to the technical field of tunnel excavation, in particular to a double-thrust multi-cutterhead tunnel boring machine and a tunneling method thereof.
Background
A full-face Tunnel Boring Machine (TBM) is large tunnel boring equipment integrating mechanical, electronic, hydraulic, laser and other technologies, and plays an important role in mountain tunnels, diversion engineering and urban subway construction. TBM is divided into shield type TBM and open type TBM, tunnel section of TBM excavation is generally circular. Some tunnels also use special-shaped sections to increase the utilization of the tunnel space. However, due to complex geological conditions in China, the conditions of soil and rock are inevitably met in tunnel construction, under the premise, a single hard rock or soft soil heading machine (EPB) cannot meet the construction requirement, so that the development of a dual-mode heading machine is promoted in practical application, but the dual-mode heading machine has the defects of high mode conversion workload and long time, the construction efficiency is low when aiming at strata with alternate soft and hard layers, and meanwhile, because the pressure maintaining and open modes are needed, the system to be configured on the machine is increased, and the construction cost is obviously increased.
Disclosure of Invention
Aiming at the defects in the background technology, the invention provides a double-thrust multi-cutterhead tunnel boring machine and a tunneling method thereof, which solve the problems of large mode conversion workload, long time and high manufacturing cost of a dual-mode tunneling machine in the prior art.
The technical scheme of the invention is realized as follows: the utility model provides a double-thrust multitool dish tunnel boring machine, includes the tunneling system, section of jurisdiction pin-connected panel system and slag discharging system, and the tunneling system includes the shield body, is equipped with blade disc body and rice word roof beam in the shield body, and section of jurisdiction pin-connected panel system includes the section of jurisdiction pin-connected panel machine, blade disc body front end is equipped with a plurality of split type blade disc, is equipped with section of jurisdiction pin-connected panel machine on the rice word roof beam, is used for installing second thrust mechanism's arch frame installation device and concrete injection apparatus, and the section of jurisdiction pin-connected panel machine is located arch frame installation device the place ahead, and concrete injection apparatus installs in arch frame installation device top, is equipped with the propulsion cylinder on the outer lane circumference on the rice word roof beam, and split type blade disc corresponds with slag discharging system.
The split cutterhead comprises 4 front cutterheads and 7 rear cutterheads, wherein one rear cutterhead is located at the center of the cutterhead body, a front cutter driving device is arranged at the rear part of the front cutterhead, and a rear cutter driving device is arranged at the rear part of the rear cutterhead. The cutting areas of the adjacent cutterheads are mutually overlapped and crossed, and the excavation coverage area can reach more than 80%.
The front cutterhead and the rear cutterhead are arranged along the circumferential direction by taking the center of the cutterhead body as the center of a circle, the front cutterhead and the rear cutterhead are arranged at intervals, and the distance that the front cutterhead extends out of the cutterhead body is larger than the distance that the rear cutterhead extends out of the cutterhead body. The front cutterhead and the rear cutterhead form a front layer and a rear layer, do not interfere with each other, and improve excavation efficiency.
The second thrust mechanism comprises a force transmission frame and a supporting ring, one end of the force transmission frame is hinged with the propulsion cylinder, the other end of the force transmission frame is hinged with the supporting ring in a second propulsion mode, and an arc-shaped steel plate is movably arranged on the outer circumference of the supporting ring. The heading machine comprises two propulsion modes, and under the condition of good rock conditions, a second propulsion mode is used for supporting a tunnel.
The support ring comprises at least 2 split ring bodies, two adjacent split ring bodies are hinged with each other, a tightening oil cylinder is arranged on each split ring body, and the telescopic end of the tightening oil cylinder is connected with the arc-shaped steel plate. The supporting ring and the force transmission frame are designed in a circular structure, and the split-ring type supporting ring is convenient to transport.
The slag discharging system comprises a screw conveyor, the screw conveyor is obliquely arranged, a slag inlet of the screw conveyor corresponds to the split-type cutter head, and the screw conveyor penetrates through the Chinese character 'mi' -shaped beam. Slag is discharged by using a screw conveyor.
A man cabin is arranged between the rice-shaped beam and the cutter head body, and a shield tail brush and a slurry stopping plate are arranged on the inner wall of the tail part of the shield body. The setting in people's storehouse is convenient for detect and maintenance or change to the blade disc, and the leakproofness of section of jurisdiction and tunnel hole inner wall is improved in the setting of shield tail brush and end thick liquid board.
The tunneling method of the double-thrust multi-cutterhead tunnel boring machine comprises a first propulsion mode and a second propulsion mode, wherein the first propulsion mode comprises the following steps of: s1: the front cutter driving device and the rear cutter driving device drive the split cutter to rotate, so as to excavate the face; s2: the segment erector installs the precast concrete segment and supports the tunnel; s3: after a certain distance is excavated, the pushing oil cylinder stretches out to push the precast concrete segment forward; s4: in the process of excavation, outputting dregs through a dreg discharging system;
the second propulsion mode comprises the steps of: b1: firstly, conveying a force transmission frame and a supporting ring into a tunnel hole, combining the force transmission frame and the supporting ring into a circumferential structure, and then connecting an arc-shaped steel plate and a tightening oil cylinder; b2: the front cutter driving device and the rear cutter driving device drive the split cutter to rotate, so as to excavate the face; b3: the arch frame mounting device is used for mounting the assembled supporting ring and the arc-shaped steel plate in a tunnel hole, and the supporting cylinder and the arc-shaped steel plate extend out to support the tunnel; b4: after tunneling one stroke, the tightening oil cylinder and the arc-shaped steel plate are retracted, the pushing oil cylinder is towed to the force transmission frame and the supporting ring to move forwards for one stroke, and then the tightening oil cylinder and the arc-shaped steel plate are stretched out to reciprocate circularly until tunneling in surrounding rock with better geology is completed.
And B3 and B4, tightly supporting the oil cylinder to press the arc-shaped steel plate on the wall of the hole, generating great friction force, providing a supporting reaction force for the propulsion oil cylinder, and pushing the whole tunneling system to tunnel forwards.
The invention adopts the design of double-thrust multi-cutter, the cutter replaces a large cutter by a plurality of split cutters, the corresponding driving mode is changed into an independent driving mode, the design of the cutter greatly reduces the manufacturing cost of the cutter, and the whole manufacturing cost is obviously reduced. In addition, the invention can realize the conversion of the thrust, two kinds of thrust are used for the tunneling machine, and when the tunnel geology is bad, the conventional earth pressure balance mode is adopted for tunneling; when the geology is better, the supporting ring is adopted to prop up the wall of the hole, and the pushing cylinder is propped up on the supporting ring through the force transmission frame to provide the power for advancing the whole machine. The two propulsion modes are short in time consumption, simple in procedure and convenient to operate. Most importantly, the prefabricated concrete duct piece can be used for supporting, but a set of device for assembling the steel arch and spraying concrete is arranged at the tail part of the main machine, namely, the primary supporting can be carried out in a mode of adding concrete into the steel arch, so that safe colleagues are ensured, the construction cost is further reduced, and the device has great popularization significance in the future.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings that are required for the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a schematic diagram of a first propulsion mode structure of the present invention.
Fig. 2 is a schematic diagram of a second propulsion mode structure of the present invention.
Fig. 3 is a view from A-A in fig. 2.
Fig. 4 is a view in the direction B-B of fig. 2.
Fig. 5 is a view in the direction D-D of fig. 2.
FIG. 6 is a schematic view of a 1/4 block support ring.
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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-2, in embodiment 1, a dual-thrust multi-cutterhead tunnel boring machine comprises a tunneling system, a duct piece assembly machine system and a slag discharging system, wherein the tunneling system comprises a shield body 5, a cutterhead body 1 and a rice-shaped beam 9 are arranged in the shield body 5, and the cutterhead body 1 is used for supporting cutterheads. The duct piece splicing machine system comprises a duct piece splicing machine 10 which is used for splicing the precast concrete duct pieces 8. The front end of the cutter head body 1 is provided with a plurality of split cutter heads 20, and the excavation surface of the split cutter heads 20 is circular. The pipe piece erector 10, the arch frame installation device 12 for installing the second thrust mechanism and the concrete injection device 13 are arranged on the rice-shaped beam 9, the pipe piece erector 10 is positioned in front of the arch frame installation device 12, the concrete injection device 13 is arranged above the arch frame installation device 12, the pushing oil cylinder 4 is arranged on the circumference of the outer ring of the rice-shaped beam 9, the pushing oil cylinder 4 stretches out and draws back to realize the advancing of a tunneling system, the split cutterhead 20 corresponds to a slag system, and dregs generated in the tunneling process are conveyed to a tunnel through the slag system.
Further, as shown in fig. 3, the split cutterhead 20 is a spoke cutterhead. The split cutter head 20 comprises 4 front cutter heads 201 and 7 rear cutter heads 202, wherein one rear cutter head 202 is positioned at the center of the cutter head body 1, the rest rear cutter heads 202 are circumferentially arranged along the cutter head body, a front cutter driving device 203 is arranged at the rear part of the front cutter head 201, a rear cutter driving device 204 is arranged at the rear part of the rear cutter head 202, and one cutter head is provided with one driving device to form independent driving, so that tunneling efficiency is improved. The front cutter 201 and the rear cutter 202 are circumferentially arranged with the center of the cutter body 1 as a circle center, the front cutter 201 and the rear cutter 202 are arranged at intervals, and the distance that the front cutter 201 extends out of the cutter body 1 is greater than the distance that the rear cutter 202 extends out of the cutter body 1. The outer edges of the front cutterhead 201 and the rear cutterhead 202 are inscribed in a tunnel inner wall circle. The multi-cutter disc has the advantages of being obvious in advantages of reducing cost, large in cutting torque for rotary cutting of the multi-cutter disc, low in stirring torque, small in disturbance to surrounding soil, controllable in vibration, small in shield body runout, beneficial to shield attitude control and ground subsidence control, simple in manufacturing and processing, high in reliability of later operation, reusable in cutter disc and strong in section adaptability.
As shown in fig. 3-6, in embodiment 2, the second thrust mechanism includes a force transmission frame 14 and a supporting ring 15, both of which are designed in a circular structure and are required to be transported into a hole in a blocking manner, so that the transport is convenient, in the second thrust mode, one end of the force transmission frame 14 is hinged with the propulsion cylinder 4, the other end of the force transmission frame is hinged with the supporting ring 15, an arc-shaped steel plate 16 is movably arranged on the outer circumference of the supporting ring 15, and the arc-shaped steel plate 16 moves radially relative to the supporting ring, so that the supporting of the tunnel wall is realized. The supporting ring 15 comprises 4 split ring bodies, two adjacent split ring bodies are mutually hinged, a tightening oil cylinder 17 is arranged on each split ring body, and the telescopic end of the tightening oil cylinder 17 is connected with an arc-shaped steel plate 16. In the second propulsion mode, the split ring bodies are combined into a circular structure, then the arc-shaped steel plate 16 and the tightening oil cylinder 17 are connected, and then the hydraulic pipeline and the control circuit are connected. The tightening cylinders 17 are arranged as shown in fig. 6, and are connected with the arc-shaped steel plates 16 in the radial direction by a plurality of cylinders. The number of the arc-shaped steel plates is 4, and the arc-shaped steel plates are controlled independently and are mainly used for supporting the oil cylinder to compress the arc-shaped steel plates on the hole wall.
Further, the slag discharging system comprises a screw conveyor 11, the screw conveyor 11 is obliquely arranged, a slag inlet of the screw conveyor 11 corresponds to the split type cutter head 20, the screw conveyor 11 penetrates through the Mi-shaped beam 9, and slag is discharged by the screw conveyor. Be equipped with people's storehouse 3 between rice word roof beam 9 and the blade disc body 1, be equipped with shield tail brush 6 and the thick liquid board that ends 7 on the inner wall of shield body 5 afterbody, the setting in people's storehouse is convenient for to the detection and the maintenance or the change of blade disc, and the leakproofness of section of jurisdiction and tunnel hole inner wall is improved in the setting of shield tail brush and the thick liquid board that ends.
Other structures are the same as in embodiment 1.
Embodiment 3, a dual-thrust multi-cutterhead tunnel boring machine, and a tunneling method of the dual-thrust multi-cutterhead tunnel boring machine, comprising a first propulsion mode and a second propulsion mode, wherein the first propulsion mode is used for the condition of poor surrounding rock, and the tunneling condition is the same as the conventional tunneling mode. The second propulsion mode is suitable for the condition of good surrounding rock, and the first propulsion mode comprises the following steps: s1: the front cutter driving device and the rear cutter driving device drive the split cutter to rotate, so as to excavate the face; s2: the segment erector installs the precast concrete segment and supports the tunnel; s3: after a certain distance is excavated, the pushing oil cylinder stretches out to push the precast concrete segment forward; s4: in the process of excavation, outputting dregs through a dreg discharging system;
the second propulsion mode comprises the steps of: b1: firstly, conveying a force transmission frame and a supporting ring into a tunnel hole, combining the force transmission frame and the supporting ring into a circumferential structure, and then connecting an arc-shaped steel plate and a tightening oil cylinder; b2: the front cutter driving device and the rear cutter driving device drive the split cutter to rotate, so as to excavate the face; b3: the arch frame mounting device is used for mounting the assembled supporting ring and the arc-shaped steel plate in a tunnel hole, and the supporting cylinder and the arc-shaped steel plate extend out to support the tunnel; b4: after tunneling one stroke, the tightening oil cylinder and the arc-shaped steel plate are retracted, the pushing oil cylinder is towed to the force transmission frame and the supporting ring to move forwards for one stroke, and then the tightening oil cylinder and the arc-shaped steel plate are stretched out to reciprocate circularly until tunneling in surrounding rock with better geology is completed. In the steps B3 and B4, the supporting oil cylinder 17 presses the arc-shaped steel plate 16 on the wall of the hole, so that a large friction force is generated, a supporting reaction force is provided for the propulsion oil cylinder 4, and the whole tunneling system is pushed to tunnel forwards.
Other structures are the same as those of embodiment 2.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (7)
1. The utility model provides a double-thrust multitool dish tunnel boring machine, includes tunneling system, section of jurisdiction pin-connected panel machine system and slag system, and tunneling system includes shield body (5), is equipped with blade disc body (1) and rice word roof beam (9) in shield body (5), and section of jurisdiction pin-connected panel machine system includes section of jurisdiction pin-connected panel machine (10), its characterized in that: the front end of the cutter head body (1) is provided with a plurality of split cutter heads (20), a pipe piece splicing machine (10), an arch frame installation device (12) for installing a second thrust mechanism and a concrete spraying device (13) are arranged on the rice-shaped beam (9), the pipe piece splicing machine (10) is positioned in front of the arch frame installation device (12), the concrete spraying device (13) is installed above the arch frame installation device (12), a pushing oil cylinder (4) is arranged on the circumference of an outer ring of the rice-shaped beam (9), and the split cutter heads (20) correspond to a slag discharging system;
the split cutter head (20) comprises 4 front cutter heads (201) and 7 rear cutter heads (202), wherein one rear cutter head (202) is positioned at the center of the cutter head body (1), a front cutter driving device (203) is arranged at the rear part of the front cutter head (201), and a rear cutter driving device (204) is arranged at the rear part of the rear cutter head (202);
the second thrust mechanism comprises a force transmission frame (14) and a supporting ring (15), one end of the force transmission frame (14) is hinged with the propulsion cylinder (4) and the other end of the force transmission frame is hinged with the supporting ring (15) in a second thrust mode, and an arc-shaped steel plate (16) is movably arranged on the outer circumference of the supporting ring (15).
2. The dual thrust multi-cutter tunnel boring machine according to claim 1, wherein: the front cutterhead (201) and the rear cutterhead (202) are arranged circumferentially by taking the center of the cutterhead body (1) as a circle center, the front cutterhead (201) and the rear cutterhead (202) are arranged at intervals, and the distance that the front cutterhead (201) extends out of the cutterhead body (1) is greater than the distance that the rear cutterhead (202) extends out of the cutterhead body (1).
3. The dual thrust multi-cutter tunnel boring machine according to claim 1, wherein: the support ring (15) comprises at least 2 split ring bodies, two adjacent split ring bodies are hinged with each other, a tightening oil cylinder (17) is arranged on each split ring body, and the telescopic end of each tightening oil cylinder (17) is connected with an arc-shaped steel plate (16).
4. A dual thrust multiple cutter tunnel boring machine according to claim 1 or claim 3, wherein: the slag discharging system comprises a screw conveyor (11), the screw conveyor (11) is obliquely arranged, a slag inlet of the screw conveyor (11) corresponds to the split cutter head (20), and the screw conveyor (11) penetrates through the rice-shaped beam (9).
5. The dual thrust multi-cutter tunnel boring machine according to claim 4, wherein: a man cabin (3) is arranged between the rice-shaped beam (9) and the cutter head body (1), and a shield tail brush (6) and a slurry stopping plate (7) are arranged on the inner wall of the tail part of the shield body (5).
6. A method of driving a double-thrust multi-cutter tunnel boring machine according to claim 1, wherein: the method comprises a first propulsion mode and a second propulsion mode, wherein the first propulsion mode comprises the following steps: s1: the front cutter driving device and the rear cutter driving device drive the split cutter to rotate, so as to excavate the face; s2: the segment erector installs the precast concrete segment and supports the tunnel; s3: after a certain distance is excavated, the pushing oil cylinder stretches out to push the precast concrete segment forward; s4: in the process of excavation, outputting dregs through a dreg discharging system;
the second propulsion mode comprises the steps of: b1: firstly, conveying a force transmission frame and a supporting ring into a tunnel hole, combining the force transmission frame and the supporting ring into a circumferential structure, and then connecting an arc-shaped steel plate and a tightening oil cylinder; b2: the front cutter driving device and the rear cutter driving device drive the split cutter to rotate, so as to excavate the face; b3: the arch frame mounting device is used for mounting the assembled supporting ring and the arc-shaped steel plate in a tunnel hole, and the supporting cylinder and the arc-shaped steel plate extend out to support the tunnel; b4: after tunneling one stroke, the tightening oil cylinder and the arc-shaped steel plate are retracted, the pushing oil cylinder drags the force transmission frame and the supporting ring to move forwards for one stroke, and then the tightening oil cylinder and the arc-shaped steel plate are extended out to reciprocate circularly until tunneling in surrounding rock with better geology is completed.
7. The tunneling method of the double-thrust multi-cutter tunnel boring machine according to claim 6, wherein: in the steps B3 and B4, the oil cylinder (17) is tightly supported to press the arc-shaped steel plate (16) on the wall of the hole, so that a large friction force is generated, a supporting reaction force is provided for the propulsion oil cylinder (4), and the whole tunneling system is pushed to tunnel forwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811358602.9A CN109630148B (en) | 2018-11-15 | 2018-11-15 | Double-thrust multi-cutterhead tunnel boring machine and boring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811358602.9A CN109630148B (en) | 2018-11-15 | 2018-11-15 | Double-thrust multi-cutterhead tunnel boring machine and boring method thereof |
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| CN109630148A CN109630148A (en) | 2019-04-16 |
| CN109630148B true CN109630148B (en) | 2024-03-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111188626B (en) * | 2020-03-13 | 2024-05-28 | 长安大学 | Advanced support system of open type soft rock heading machine and application method of advanced support system |
| CN111322080B (en) * | 2020-03-19 | 2021-06-29 | 西安建筑科技大学 | Open TBM cutter head hole internal fixing method based on anchor rod locking process |
| CN112943275A (en) * | 2021-02-08 | 2021-06-11 | 中国铁建重工集团股份有限公司 | Shield machine |
| CN113006805B (en) * | 2021-03-19 | 2022-03-22 | 中铁工程装备集团有限公司 | Equipment for mechanically building subway station and construction method thereof |
| CN113586099B (en) * | 2021-08-26 | 2024-07-02 | 中铁工程装备集团有限公司 | Open TBM construction method, support system and support method thereof |
| CN114135305B (en) * | 2021-10-20 | 2024-03-15 | 中铁上海工程局集团有限公司 | Zero-dead-zone special-shaped heading machine and construction method thereof |
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| JP2006045867A (en) * | 2004-08-03 | 2006-02-16 | Okumura Corp | Construction method of tunnel branch part and its device |
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| CN209324360U (en) * | 2018-11-15 | 2019-08-30 | 中铁工程装备集团有限公司 | A kind of dual thrust multi-cutter-disk rock tunnel(ling) machine |
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| CN105041328A (en) * | 2015-07-29 | 2015-11-11 | 中铁工程装备集团有限公司 | Shield tunneling machine with cast-in-situ supporting function for tunnels with large horseshoe-shaped sections |
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