An earth pressure - slurry double - mode connecting passage tunneling machine

Abstract

The present invention relates to equipment for tunneling in soil layers or rock layers, and particularly to an earth pressure - slurry double - mode connection tunnel boring machine. The earth pressure - slurry double - mode connection tunnel boring machine comprises a main machine and its supporting system. The main machine includes a support device, an excavation device and a driving device. A soil bin is arranged behind the excavation device, and the soil bin is equipped with a screw conveyor for discharging slag and a slurry circulation system. The supporting system includes a rear supporting system of the main machine and a receiving and moving platform for the main machine. The rear supporting system of the main machine includes an electro - mechanical - hydraulic module, a main machine starting module, a material transfer module and a supporting module for the slurry circulation system. The supporting module for the slurry circulation system is an optional module and is equipped with a material transfer device for transferring materials from the rear end to the material transfer module. By combining the existing earth pressure balance connection tunnel boring machine with the slurry balance connection tunnel boring machine, the present invention can adapt to excavations in different geological conditions and greatly reduces the excavation cost of the connection tunnel.

Description

Technical Field

[0001] The invention relates to soil or rock stratum excavation equipment, in particular to an earth pressure-mud and water dual-mode communication channel excavator. Background Art

[0002] In order to meet the needs of post-service and risk avoidance, a communication channel needs to be designed at a certain distance between double-track tunnels. The "Metro Design Code" directly stipulates that "a communication channel should be set up between two single-track section tunnels, and the distance between adjacent communication channels should not exceed 600m." Therefore, the construction volume of the communication channel during tunnel construction is very large. The traditional way of excavating communication channels is mining excavation, which requires steps such as strengthening the stratum, stopping water, and manual excavation. Not only is the construction efficiency low and the construction cost high, but it also greatly threatens the personal safety of construction workers.

[0003] In response to the above problems, a patent with announcement number CN106437735B and announcement date June 1, 2018 provides a shield machine for a tunnel communication channel and a communication channel excavation method thereof. The shield machine for the communication channel includes a main machine and a supporting system. The main machine includes a support part, an excavation part, a drive part and a slag discharge part. The support part specifically adopts a shield body, the excavation part adopts a cutter disc, and the drive part is a motor connected to the cutter disc. A partition is provided in the shield body, and the partition is located behind the cutter disc. The drive part is installed on the partition, and a soil bin is formed between the partition, the shield body and the cutter disc. The slag discharge part adopts a screw conveyor, and the front end of the screw conveyor is installed at the bottom of the soil bin partition and leads to the soil bin, which is used to transport the slag generated during the excavation process to the rear, so that the corresponding slag transportation device can transport it out of the main tunnel. The supporting system includes the starting end support walking platform and the receiving end support walking platform. The receiving end walking platform and the starting end walking platform are located in two main tunnels, respectively used for the starting and receiving of the main engine. The starting end walking platform is equipped with a hydraulic system, an electrical system, a control system, a slag improvement system and a slag discharge system. Although the shield machine used in the communication channel has realized the shield excavation of the communication channel, there is a risk of eruption in high water pressure strata because the slag is discharged by a screw conveyor.

[0004] The patent application with application publication number CN113482646A and publication date October 8, 2021 discloses a slurry shield machine for a communication channel. Unlike the above-mentioned shield machine for a communication channel, the slag discharge part of the slurry shield machine for the communication channel adopts a slurry circulation system. The slurry circulation system includes a slurry inlet pipe and a slurry discharge pipe in the main tunnel. The front ends of the slurry inlet pipe and the slurry discharge pipe are connected to the slurry bin of the main machine. When in use, slag discharge is achieved through equipment such as a slurry pump. Therefore, it can be used for excavation of high water pressure formations. However, due to the limitations of the main machine structure and the slag discharge part structure, the slurry shield machine for the communication channel cannot be used for excavation of shallow water formations.

[0005] As can be seen from the above introduction, the current shield machines for connecting channels can only be applied to the excavation of shallow water strata or the excavation of high water pressure strata. The main tunnel of a double-track tunnel often extends over a long distance and passes through different stratum geological environments. That is, in different connecting channels of the same double-track tunnel, part of them may be located in the phreatic stratum and the other part may be located in the high water pressure stratum. Especially during the construction of the connecting channel, the earth pressure balance connecting channel tunneling machine can adapt to the construction conditions of most connecting channels. For a few connecting channels with large buried depth and high water pressure, the slurry balance mode needs to be adopted for construction. The connecting channel is generally relatively short, and several connecting channels are included in one bid section. If the water pressure of one connecting channel in the bid section is relatively large, the earth pressure balance mode tunneling machine does not have the construction conditions for this bid section because it cannot meet all working conditions. If the existing connecting channel tunneling machines are used, different types of tunneling machines need to be equipped separately. The demand for single-mode slurry tunneling machines is small, and separate procurement will greatly increase the construction cost. Summary of the Invention

[0006] The purpose of the present invention is to provide an earth pressure-slurry double-mode connecting channel tunneling machine to solve the problem of high excavation cost of connecting tunnels caused by the inability of existing connecting channel tunneling machines to adapt to the excavation of different geological conditions.

[0007] To solve the above problems, the earth pressure-slurry double-mode connecting channel tunneling machine of the present invention adopts the following technical solutions: An earth pressure-slurry double-mode connecting channel tunneling machine includes a main machine and its supporting system. The main machine includes a support device, an excavation device, and a driving device. A soil bin is provided behind the excavation device, and a screw conveyor and a slurry circulation system for discharging slag are arranged at the rear side of the soil bin. The supporting system includes a rear supporting system of the main machine and a mobile receiving platform for the main machine. The rear supporting system of the main machine includes an electro-mechanical-hydraulic module, a starting module of the main machine, a material transfer module, and a supporting module for the slurry circulation system. The supporting module for the slurry circulation system is an optional module and is equipped with a material transfer device for transferring materials from the rear end to the material transfer module.

[0008] Advantages: Compared with the existing connection tunnel boring machines, the earth pressure - slurry balance dual - mode connection tunnel boring machine of the present invention combines an earth pressure balance tunnel boring machine and a slurry balance tunnel boring machine. On the one hand, a screw conveyor and a slurry circulation system are respectively configured for the main machine, and the supporting modules of the slurry circulation system are set as optional modules. This enables the main machine to discharge slag through the screw conveyor and use the earth pressure mode for tunneling, or discharge slag through the slurry circulation system and use the slurry mode for tunneling. Moreover, when using the earth pressure mode for tunneling, the supporting modules of the slurry circulation system can be removed as a whole and left on the ground without the need for procedures such as going down the launching shaft and assembly, which will not bring any burden to the earth pressure mode tunneling. When using the slurry mode for tunneling, the material transfer device on the supporting modules of the slurry circulation system can transfer the materials required for tunneling between the main tunnel material system and the material transfer module, forming a slurry balance tunnel boring machine together with the electro - mechanical - hydraulic module, the main machine launching module, and the material transfer module, realizing the sharing of the electro - mechanical - hydraulic module, the main machine launching module, and the material transfer module. In summary, the earth pressure - slurry balance dual - mode connection tunnel boring machine of the present invention, by combining the existing earth pressure balance connection tunnel boring machine and the slurry balance connection tunnel boring machine, saves a set of electro - mechanical - hydraulic module, main machine launching module, and material transfer module, and achieves the effect of optional earth pressure - slurry mode, can adapt to the excavation of different geological conditions, and greatly reduces the excavation cost of the connection tunnel.

[0009] Furthermore, the slurry circulation system includes a slurry inlet pipe and a slurry discharge pipe. An inlet joint for connecting with the slurry inlet pipe and a discharge joint for connecting with the slurry discharge pipe are provided on the soil bin partition of the soil bin. The inlet joint and the discharge joint can achieve quick connection with the slurry inlet pipe and the slurry discharge pipe.

[0010] Furthermore, a detachable connection structure for connecting with the slurry inlet pipe is provided on the inlet joint, and a detachable connection structure for detachably connecting with the slurry discharge pipe is provided on the discharge joint. The detachable connection structure can achieve quick disassembly and assembly of the slurry inlet pipe and the slurry discharge pipe, which brings convenience to the switching between the earth pressure and slurry modes of the tunneling machine.

[0011] Furthermore, the slurry discharge pipe uses the screw support matching the screw conveyor as the discharge joint. When the slurry discharge pipe uses the screw support of the screw conveyor as the discharge joint, compared with setting another discharge joint, on the one hand, one discharge joint can be saved, and on the other hand, the advantage of the lower position of the screw support can be fully utilized to achieve efficient slurry discharge, and at the same time, the problem of mutual interference between the positions of the screw support and the discharge joint is avoided.

[0012] Furthermore, a slurry inlet valve for controlling on - off is provided on the slurry inlet pipe, and a slurry discharge valve for controlling on - off is provided on the slurry discharge pipe. The slurry inlet valve / slurry discharge valve can achieve quick on - off control of the slurry inlet pipe / slurry discharge pipe, so that when tunneling in the earth pressure mode, it is not necessary to disassemble the slurry inlet pipe and the slurry discharge pipe anymore.

[0013] Furthermore, a bypass valve is provided between the slurry discharge pipe and the slurry inlet pipe.

[0014] Furthermore, the supporting modules of the mud-water circulation system include a slurry pump trailer and a mud-water separation trailer. The slurry pump trailer and the mud-water separation trailer are independently arranged. On the one hand, it is convenient for the layout of the slurry pump and the mud-water separation equipment. On the other hand, the distance between the two can be flexibly controlled to meet different engineering requirements. For example, the mud-water separation trailer can be placed in the main tunnel or on the ground.

[0015] Furthermore, the mud-water separation trailer is a ground trailer used for being arranged above the starting shaft of the main tunnel. When the distance between the connecting passage and the starting shaft of the main tunnel is relatively close, setting the mud-water separation trailer as a ground trailer can further reduce the number of equipment going down the shaft and improve efficiency.

[0016] Furthermore, a relay pump is provided between the slurry pump trailer and the mud-water separation trailer.

[0017] Furthermore, the material transfer device is a track provided on the slurry pump trailer and the mud-water separation trailer and used for supporting the material transportation system in the main tunnel.

[0018] Furthermore, the track is fixedly installed on the slurry pump trailer and the mud-water separation trailer through pressing blocks. Fixing the track on the slurry pump trailer and the mud-water separation trailer through pressing blocks helps to achieve quick disassembly and assembly.

[0019] Furthermore, slurry transfer pipelines for connecting the supporting modules of the mud-water circulation system and the soil bin are respectively provided on the main machine starting module and the material transfer module. Arranging the slurry transfer pipelines on the main machine starting module and the material transfer module can be directly connected to the supporting modules of the mud-water circulation system, simplifying the pipeline laying process during the tunneling in the mud-water mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic cross-sectional view of the connecting passage excavated by using Embodiment 1 of the earth pressure - mud-water dual-mode connecting passage tunneling machine of the present invention;

[0021] Figure 2 is a schematic view of the main machine in the earth pressure mode in Embodiment 1 of the earth pressure - mud-water dual-mode connecting passage tunneling machine of the present invention;

[0022] Figure 3 is a schematic view of the main machine in the mud-water mode in Embodiment 1 of the earth pressure - mud-water dual-mode connecting passage tunneling machine of the present invention;

[0023] Figure 4 is a schematic view of the slurry inlet and discharge pipes of the main machine in the mud-water mode in Embodiment 1 of the earth pressure - mud-water dual-mode connecting passage tunneling machine of the present invention;

[0024] Figure 5 is a schematic diagram of Embodiment 1 of the earth pressure - slurry double - mode connection tunnel boring machine of the present invention in the earth pressure mode;

[0025] Figure 6 is a schematic diagram of Embodiment 1 of the earth pressure - slurry double - mode connection tunnel boring machine of the present invention in the slurry mode;

[0026] Figure 7 is a schematic diagram of the trailer track;

[0027] Figure 8 is a top view of the trailer track;

[0028] Figure 9 is Figure 7 a partial enlarged view at I;

[0029] Figure 10 is a schematic diagram of Embodiment 2 of the earth pressure - slurry double - mode connection tunnel boring machine of the present invention in the slurry mode.

[0030] In the figure: 101, main machine; 11, shield body; 12, earth pressure chamber partition; 13, screw conveyor support; 14, cutter head; 15, transmission box; 16, motor; 17, steering cylinder; 18, slurry inlet joint; 19, slurry inlet pipe; 20, slurry inlet valve; 21, slurry discharge pipe; 22, slurry discharge valve; 23, bypass valve; 24, first electro - mechanical - hydraulic trailer; 25, second electro - mechanical - hydraulic trailer; 26, main machine starting trailer; 27, material transfer trailer; 28, slurry pump trailer; 29, slurry separation trailer; 30, crane beam; 31, crane; 32, track; 33, pressing block; 34, main machine receiving trailer; 35, slurry circulation hose; 102, screw conveyor. Detailed implementation manners

[0031] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0032] Therefore, the detailed description of the embodiments of the present invention provided in the drawings below is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0033] It should be noted that relational terms such as "first" and "second" and the like that may appear are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, terms such as "comprising", "including" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent in such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0034] The features and performance of the present invention will be further described in detail below in conjunction with embodiments.

[0035] Embodiment 1 of the earth pressure - slurry double - mode connection tunnel boring machine:

[0036] As Figures 1-9 shown, the earth pressure - slurry double - mode connection tunnel boring machine includes a main machine 101 and a supporting system.

[0037] The structure of the main machine 101 is as Figure 2 、 3 shown. In this embodiment, a pipe - jacking machine main machine is specifically adopted, which includes a support device, an excavation device, a driving device, and an alignment device. In order to realize earth pressure / slurry mode tunneling, the main machine 101 is configured with a slurry circulation system and a screw conveyor 102.

[0038] The support device specifically adopted is a shield 11. The shield 11 includes a front shield and a tail shield. A soil chamber partition 12 is provided in the front shield. The soil chamber partition 12 is annular, and its outer edge is fixedly connected to the front shield, and its inner edge is used for installing the driving device. A screw machine support 13 is provided at the bottom of the soil chamber partition 12. The screw machine support 13 includes a cylinder base fixedly connected to the soil chamber partition 12. One end of the cylinder base away from the soil chamber partition 12 is provided with a cylinder base flange, which can be used for fixedly connecting with corresponding appendages.

[0039] The excavation device adopted is a cutter head 14. The cutter head 14 is installed on the soil chamber partition 12 of the front shield through a driving device. The driving device includes a transmission box 15 and a motor 16 installed in the transmission box 15. The cutter head 14 is installed on the transmission box 15 through a cutter head main shaft. Driven by the motor 16, the cutter head 14 can be driven to rotate. The cutter head 14 is located in front of the soil chamber partition 12, and a soil chamber is formed between the cutter head 14 and the soil chamber partition 12. During tunneling, the muck, slurry, etc. generated will be concentrated in the soil chamber and then discharged.

[0040] The steering device uses steering cylinders 17. The front end of the steering cylinder 17 is hinged to the front shield, and the rear end is hinged to the tail shield. A plurality of steering cylinders 17 are arranged between the front shield and the tail shield. Through the mutual cooperation of each steering cylinder 17, the front shield can be driven to swing relative to the tail shield by a certain angle, thereby realizing the steering during tunneling.

[0041] The mud circulation system includes a slurry feeding device and a slurry discharging device. The slurry feeding device includes a slurry feeding joint 18, a slurry feeding pipe 19, and a slurry feeding valve 20. The slurry feeding joint 18 is fixedly connected to the upper part of the soil bin partition 12, and a joint flange is provided at one end away from the soil bin partition 12. The slurry feeding pipe 19 is connected to the slurry feeding joint 18 through a flange, and the slurry feeding valve 20 is arranged on the slurry feeding pipe.

[0042] The slurry discharging device includes a slurry discharging pipe 21. The slurry discharging pipe 21 uses the screw conveyor support 13 on the soil bin partition 12 as the slurry discharging joint, and a slurry discharging valve 22 is installed thereon. A bypass valve 23 is provided between the slurry discharging pipe 21 and the slurry feeding pipe 19. The slurry discharging pipe 21 and the screw conveyor support 13 are detachably connected through a flange. The slurry discharging valve 22 can be used to control the on-off of the slurry discharging pipe 21. The bypass valve 23 is a valve between the slurry feeding pipe and the slurry discharging pipe. When the bypass valve 23 is opened, a passage is formed between the slurry feeding pipe 19 and the slurry discharging pipe 21, and a slurry circulation is first formed to establish a slurry pressure. Then, the slurry feeding valve 20 and the slurry discharging valve 22 are opened, and the bypass valve 23 is closed at the same time. The slurry circulation forms a new loop through the soil bin (muddy water bin) to realize tunneling in the muddy water mode.

[0043] The screw conveyor 102 is used to be installed on the screw conveyor support 13 provided at the bottom of the soil bin partition 12, and discharges slag outward when the tunneling machine tunnels in the earth pressure mode. The specific structure of the screw conveyor 102 is prior art and will not be described in detail here.

[0044] The supporting system includes a host rear supporting system and a host receiving mobile platform. The host rear supporting system and the host receiving mobile platform are used to be respectively arranged in the two main tunnels of the double-track tunnel for the starting of the host tunneling and the receiving after the tunneling is completed.

[0045] The host rear supporting system includes an electro-mechanical-hydraulic module, a host starting module, a material transfer module, and a mud circulation system supporting module arranged in sequence from front to back. In this embodiment, the electro-mechanical-hydraulic module includes a first electro-mechanical-hydraulic trailer 24 and a second electro-mechanical-hydraulic trailer 25; the host starting module uses a host starting trailer 26; the material transfer module uses a material transfer trailer 27; the mud circulation system supporting module includes a mud pump trailer 28 and a mud separation trailer 29. Among them, the first electro-mechanical-hydraulic trailer 24, the second electro-mechanical-hydraulic trailer 25, the host starting trailer 26, the material transfer trailer 27, the mud pump trailer 28, and the mud separation trailer 29 are arranged in sequence. The first and second electro-mechanical-hydraulic trailers are used to separately arrange the electro-mechanical-hydraulic systems required during the tunneling of the host. The specific configuration of the electro-mechanical-hydraulic system is prior art and will not be described in detail here.

[0046] The main machine starting trailer 26 is provided with a pushing system, a main tunnel support system 28 and a muddy water circulation hose 35. In this embodiment, the pushing system is the pushing system of the pipe jacking machine, and the main tunnel support system 28 adopts hydraulic struts, whose function is to tighten the wall of the main tunnel, lock the main machine starting trailer 26 at the set position, and the main machine 101 is arranged on the main machine starting trailer 26, located on the front side of the pushing system.

[0047] The material transfer trailer 27 is provided with a crane beam 30 and a crane 31. The front end of the crane beam 30 extends to the main machine starting trailer 26, and the rear end can extend above the mud pump trailer 28. The crane 31 travels along the crane beam 30 and can move from above the main machine starting trailer 26 to above the mud pump trailer 28, reciprocating between the two to transfer materials. In addition to the crane 31 and the crane beam 30, the material transfer trailer 27 is also provided with a first slurry inlet transfer pipeline and a first slurry discharge transfer pipeline, which are respectively connected to the slurry inlet pipe and the slurry discharge pipe of the main machine 101 through the muddy water circulation hose 35. The hose can realize the connection between the slurry inlet and discharge pipes behind the main machine 101 and the slurry inlet and discharge pipelines on the trailer after bending 90 degrees. The pipelines of the main machine 101 increase new pipelines and extend backward as the main machine 101 tunnels.

[0048] The mud pump trailer 28 is provided with a slurry inlet pump and a slurry discharge pump. The slurry inlet pump is connected to the first slurry inlet transfer pipeline through a second slurry inlet transfer pipeline, and the slurry discharge pump is connected to the first slurry discharge transfer pipeline through a second slurry discharge transfer pipeline.

[0049] The mud separation trailer 29 is provided with a mud separation device. The mud separation device is connected to the second slurry discharge transfer pipeline through a third slurry discharge transfer pipeline, and is used for separating mud and water from the slurry discharged from the slurry discharge pump. The separated dry slag and waste water can be transported to the outside of the tunnel by a muck truck. At the same time, the mud separation trailer 29 is also provided with a main slurry inlet pipe. The front end of the main slurry inlet pipe is connected to the second slurry inlet transfer pipeline, and the rear end extends to the main tunnel starting shaft.

[0050] There is also a continuous track 32 between the mud separation trailer 29 and the mud pump trailer 28. The track 32 is fixed on the two trailers through corresponding pressing blocks 33 (such as Figure 7 、 8 、9), the front end is laid forward to the front end of the mud pump trailer 28, under the crane beam 30 of the material transfer trailer 27, and the rear end extends to the rear end of the mud separation trailer 29, and is used in combination with the material transportation system (material transportation trolley walking wheels) in the tunnel, so that materials can be transported to below the crane 31 through the mud separation trailer 29 and the mud pump trailer 28, and then forward through the material transfer trailer 27 and the main machine starting trailer 26 by the crane 31, and the segments and other materials are transported to the main machine starting trailer 26 or the connection passage entrance.

[0051] The main machine is received in the mobile platform located in another main tunnel, and is used to receive the main machine 101 that has completed tunneling. Specifically, the main machine receiving trailer 34 is adopted, and its structure is based on the existing foundation, which will not be elaborated here.

[0052] As Figure 3 、 5 shown, this earth pressure - slurry double - mode connection passage tunneling machine has two working modes: earth pressure mode and slurry mode. Since the mileage of the connection passage is short and the geological conditions will not change significantly, which are generally known through preliminary exploration. Before preparing to enter the main tunnel, the construction party can select the working mode of the earth pressure - slurry double - mode connection passage tunneling machine on the ground. As Figure 2 shown, when the connection passage is in geological conditions such as shallow water strata, the earth pressure mode is adopted for tunneling. In the earth pressure mode, the slurry inlet valve and slurry discharge valve on the main machine can be closed on the ground, the screw conveyor is installed in the screw machine support, the slurry pump trailer and the slurry separation trailer of the main machine's rear - matching trailer system are left on the ground, and the rest is lowered into the tunnel through the starting shaft of the main tunnel (as Figure 5 ), and moved to the position of the connection passage, then excavation can be carried out.

[0053] As Figure 3 、 4 、6 shown, when the connection passage is in geological conditions such as high - pressure water strata, the slurry mode is adopted for tunneling. In the slurry mode, the screw conveyor can be disassembled on the ground, the slurry discharge device is connected to the screw machine support, the slurry pump trailer and the slurry separation trailer of the main machine's rear - matching trailer system are put into use together with the main machine's starting trailer, and are lowered into the tunnel through the starting shaft of the main tunnel (as Figure 6 ), and moved to the position of the connection passage, then excavation can be carried out.

[0054] Generally, the earth pressure mode can adapt to most construction conditions of the connection passage. For a few connection passages with large buried depth and high water pressure, the slurry mode of construction is required. The connection passage is generally relatively short, and there are several connection passages in a section. When the water pressure of one connection passage in the section is relatively large, the earth pressure - slurry double - mode connection passage tunneling machine described in the present invention can quickly switch between the earth pressure balance and slurry balance tunneling modes on the ground, with a wider scope of application and lower comprehensive construction cost.

[0055] Embodiment 2 of the earth pressure - slurry double - mode connection passage tunneling machine:

[0056] In Embodiment 1 of the earth pressure - slurry double - mode connection passage tunneling machine, the slurry pump trailer 29 is directly connected to the slurry separation trailer through a short pipeline, and the slurry separation device completes the slurry separation in the main tunnel. As Figure 10As shown, in this embodiment, a relay pump is provided between the mud pump trailer and the mud-water separation trailer of the supporting system, so that the mud-water separation trailer 29 is arranged on the ground at the starting shaft of the main tunnel. Of course, in other embodiments,

[0057] Embodiment 3 of the earth pressure - mud-water dual-mode connecting passage tunneling machine:

[0058] In Embodiments 1 and 2 of the earth pressure - mud-water dual-mode connecting passage tunneling machine, the main machine adopts a pipe jacking machine main machine. In this embodiment, the main machine adopts a shield machine main machine, and its propulsion is realized by supporting shoes and supporting shoe cylinders.

[0059] Embodiment 4 of the earth pressure - mud-water dual-mode connecting passage tunneling machine:

[0060] In Embodiments 1, 2, and 3 of the earth pressure - mud-water dual-mode connecting passage tunneling machine, the tracks are fixed on the mud pump trailer and the mud-water separation trailer through pressing blocks. In this embodiment, the tracks are fixed by bolts. Of course, in other embodiments, the tracks can also be fixed by welding or other means.

[0061] Embodiment 5 of the earth pressure - mud-water dual-mode connecting passage tunneling machine:

[0062] In Embodiments 1, 2, 3, and 4 of the earth pressure - mud-water dual-mode connecting passage tunneling machine, a material transfer device is formed by arranging tracks on the mud pump trailer and the mud-water separation trailer. In this embodiment, a crane is arranged on the mud pump trailer and / or the mud-water separation trailer to serve as the material transfer device.

[0063] Embodiment 6 of the earth pressure - mud-water dual-mode connecting passage tunneling machine:

[0064] In Embodiments 1 - 5 of the earth pressure - mud-water dual-mode connecting passage tunneling machine, the slurry inlet pipe is always connected to the slurry inlet joint, and its on-off is controlled by a slurry inlet valve. In this embodiment, a cover is provided on the slurry inlet joint. In the earth pressure mode, the slurry inlet pipe can be disassembled, and the slurry inlet joint is blocked by the cover.

[0065] Embodiment 7 of the earth pressure - mud-water dual-mode connecting passage tunneling machine:

[0066] In Embodiments 1 - 6 of the earth pressure - mud-water dual-mode connecting passage tunneling machine, the electro-mechanical-hydraulic module, the main machine starting module, the material transfer module, and the mud-water circulation system supporting module are respectively arranged on different trailer chassis. In this embodiment, the trailers of the above electro-mechanical-hydraulic module, the main machine starting module, and the material transfer module are reconfigured according to the on-site situation, and the above modules can share the trailer. Similarly, the mud pump trailer 28 and the mud-water separation trailer 29 of the mud-water circulation system supporting module can also be integrated.

Claims

1. An earth pressure - slurry double - mode connection tunnel boring machine, characterized in that, It includes a main machine and its supporting system. The main machine includes a front shield, a tail shield, an excavation device, a driving device, and a steering oil cylinder. The front end of the steering oil cylinder is hinged to the front shield, and the rear end is hinged to the tail shield. A soil bin is provided behind the excavation device. A screw conveyor and a muddy water circulation system for slag discharge are arranged at the rear side of the soil bin. The supporting system includes a rear supporting system of the main machine and a main machine receiving and moving platform. The rear supporting system of the main machine includes an electro-mechanical-hydraulic module, a main machine starting module, a material transfer module, and a supporting module of the muddy water circulation system. The supporting module of the muddy water circulation system is equipped with a material transfer device for transferring materials from the rear end to the material transfer module. The muddy water circulation system includes a slurry inlet pipe and a slurry discharge pipe. A slurry inlet joint and a slurry discharge joint are provided on the soil bin partition of the soil bin. The slurry inlet pipe and the slurry discharge pipe are detachably connected to the slurry inlet joint and the slurry discharge joint respectively. The slurry discharge pipe uses the screw support matching with the screw conveyor as the slurry discharge joint.

2. The earth pressure - slurry double - mode connecting passage tunneling machine according to claim 1, wherein A slurry inlet valve for controlling on / off is provided on the slurry inlet pipe, and a slurry discharge valve for controlling on / off is provided on the slurry discharge pipe.

3. The earth pressure - slurry double - mode connection tunnel boring machine according to claim 1, characterized in that, A bypass valve is provided between the slurry discharge pipe and the slurry inlet pipe.

4. The earth pressure - slurry double - mode connecting passage tunneling machine according to claim 1, characterized in that, The supporting module of the muddy water circulation system includes a slurry pump trailer and a muddy water separation trailer.

5. The earth pressure - slurry double - mode connecting passage tunneling machine according to claim 4, characterized in that, The muddy water separation trailer is a ground trailer used for being arranged on the wellhead of the main tunnel starting shaft.

6. The earth pressure - slurry double - mode connection passage tunneling machine according to claim 5, characterized in that, A relay pump is provided between the slurry pump trailer and the muddy water separation trailer.

7. The earth pressure - slurry double - mode connection passage tunneling machine according to claim 4, characterized in that, The material transfer device is a track provided on the slurry pump trailer and the muddy water separation trailer and used for supporting the material transportation system in the main tunnel.

8. The earth pressure - slurry double - mode connection passage tunneling machine according to claim 7, characterized in that, The track is fixedly installed on the slurry pump trailer and the muddy water separation trailer through pressing blocks.

9. The earth pressure - slurry double - mode connecting passage tunneling machine according to claim 1, characterized in that, Slurry transfer pipelines for connecting the supporting trailers of the muddy water circulation system and the soil bin are respectively provided on the main machine starting module and the material transfer module.

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