Shield tunnel testing device

Abstract

The invention discloses a shield tunnel test device, and relates to the technical field of shield tunnels. The shield tunnel testing device comprises a model box, a first driving part, a shield tunneling machine assembly and a plurality of pipe pieces, the model box comprises a box body, the shield tunneling machine assembly comprises a shield tunneling machine and a second driving part, in the first direction, the orthographic projection of the shield tunneling machine and the orthographic projection of the box body partially coincide, and the pipe pieces are arc-shaped and matched with a tunnel. The orthographic projection of the shield tunneling machine along the first direction is partially overlapped with the orthographic projection of the box body along the first direction, so that the shield tunneling machine can excavate a tunnel with a semicircular section on the side surface of the box body, the volume of the box body and the area occupied by the shield tunnel test device on the ground can be reduced, the test cost can be saved, and the test efficiency can be improved. By assembling the duct pieces in the shield tunneling machine, the real-time duct piece assembling process when the shield tunneling machine excavates the tunnel can be simulated, so that the reduction degree of the test is improved, and the accuracy and authenticity of result data in the shield tunnel excavation simulation process can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of shield tunnels, in particular to a shield tunnel testing device. Background Art

[0002] In the related technologies, the model box of the shield tunnel simulation excavation test is large in size, occupies a large area, has a high cost, and it is difficult to realize the real-time assembly process of the segments when the shield machine is excavating the tunnel. The degree of restoration of the simulation test is low, and it is difficult to obtain accurate and real results data of the shield tunnel simulation excavation process. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a shield tunnel test device that can simulate the process of assembling segments in real time when a shield machine excavates a tunnel, so as to improve the restoration degree of the test, which is conducive to improving the accuracy and authenticity of the result data during the simulated excavation process of the shield tunnel.

[0004] According to an embodiment of the present invention, a shield tunnel test device comprises: a model box, the model box comprises a box body, the box body defines a receiving space, and the receiving space is filled with a test soil; a first driving member and a shield machine assembly, the first driving member is connected to the shield machine assembly in a transmission manner, the shield machine assembly comprises a shield machine, and a second driving member, the second driving member is connected to the shield machine in a transmission manner, the first driving member is used to drive the shield machine assembly to move along a first direction, and the second driving member is used to drive the shield machine to work so as to excavate a tunnel in the test soil, along the second direction, the shield machine is located on one side of the box body, and along the first direction, the orthographic projection of the shield machine partially overlaps with the orthographic projection of the box body, so that the cross-section of the tunnel excavated by the shield machine is partially circular; a plurality of segments, the segments are arc-shaped and adapted to the tunnel, the plurality of segments are connected in sequence, and after the shield machine excavates the tunnel of a preset distance, a preset number of the segments are attached to the wall of the tunnel.

[0005] According to the shield tunnel test device of the embodiment of the present invention, by making the orthographic projection of the shield machine along the first direction partially coincide with the orthographic projection of the box body along the first direction, the shield machine can excavate a tunnel with a partially circular cross-section on the side of the box body, which can reduce the volume of the box body and the area occupied by the shield tunnel test device on the ground, thereby saving the test cost, and by assembling segments in the shield machine, the real-time segment assembly process when the shield machine excavates the tunnel can be simulated to improve the restoration degree of the test, which is beneficial to improving the accuracy and authenticity of the results data of the shield tunnel simulation excavation process.

[0006] In some embodiments of the present invention, the model box also includes: a first cover body, a second cover body and a plurality of baffles. Along the first direction, the first cover body and the second cover body are respectively used to cover both sides of the tunnel and are detachably connected to the box body. The plurality of baffles are detachably connected to the box body and are arranged in sequence along the first direction. Along the second direction, the plurality of baffles are located on the side where the shield machine is located and are used to cover the tunnel.

[0007] In some embodiments of the present invention, the shield tunnel test device also includes: a first mounting member, a screw rod and a connecting sleeve, the first mounting member is arranged on the model box, the first driving member is arranged on the model box and / or the first mounting member, the screw rod is rotatably arranged on the first mounting member and is transmission-connected to the first driving member, the connecting sleeve is arranged on the outside of the screw rod and is threadedly connected to the screw rod, and the shield machine assembly is connected to the connecting sleeve.

[0008] In some embodiments of the present invention, the shield tunnel test device also includes: a plurality of guide rails and a second mounting member, wherein the plurality of guide rails are all disposed on the first mounting member and extend along the first direction, the second mounting member is slidably matched with the guide rails and fixedly connected to the connecting sleeve, and the shield machine assembly is disposed on the second mounting member.

[0009] In some embodiments of the present invention, the shield tunnel test device further includes: a transmission assembly, the shield machine includes: a shield machine body and a cutterhead, the cutterhead is arranged on the shield machine body, and the transmission assembly is transmission-connected between the second drive member and the cutterhead.

[0010] In some embodiments of the present invention, the transmission assembly includes: a first transmission shaft, a second transmission shaft, a first gear, and a second gear, the second driving member is transmission-connected to the first transmission shaft, the first gear is transmission-connected to the first transmission shaft and meshes with the second gear, the second gear is transmission-connected to the second transmission shaft, and the second transmission shaft is transmission-connected to the cutter disc, wherein the axis of the first transmission shaft and the axis of the second transmission shaft have an angle.

[0011] In some embodiments of the present invention, the shield machine further includes: a plurality of partition plates, the shield machine body defines a cabin body, a plurality of the partition plates are arranged on the cabin body to divide the cabin body into a plurality of sub-cabins, the plurality of the sub-cabins include a soil cabin, an equipment cabin, and an assembly cabin arranged in sequence along the first direction, the cutter head is located at one end of the soil cabin away from the equipment cabin, the side wall of the soil cabin has an earth exit, part of the structure of the transmission assembly is located in the equipment cabin, and the pipe segments can be spliced ​​in the assembly cabin so as to be attached to the wall of the tunnel during the excavation of the shield machine.

[0012] In some embodiments of the present invention, the blade disc includes: a disc body, multiple banners, multiple blades and multiple stirring elements, the banners are detachably provided on the disc body, the blades are detachably provided on the banners, and the multiple stirring elements are all provided on the disc body.

[0013] In some embodiments of the present invention, the shield tunnel test device also includes: a pressure piece, and the model box also includes: a plurality of mounting beams, the pressure piece is arranged above the test soil, the plurality of mounting beams are detachably connected to the box body and are arranged above the box body, and the mounting beams are used to cover the pressure piece.

[0014] In some embodiments of the present invention, the box body has a top connecting hole, a bottom connecting hole, and a connecting cavity. The top connecting hole and the connecting cavity are both located at the upper end of the box body, the bottom connecting hole is located at the lower end of the box body, the bottom connecting hole connects between the receiving space and the outside of the box body, the top connecting hole connects between the receiving space and the connecting cavity, and the connecting cavity connects with the outside of the box body.

[0015] In some embodiments of the present invention, the tube segment has a mounting groove, and along the thickness direction of the tube segment, the bottom wall of the mounting groove has a mounting hole penetrating the tube segment.

[0016] In some embodiments of the present invention, along the thickness direction of the tube segment, both sides of the tube segment have the installation groove.

[0017] In some embodiments of the present invention, the overlapping part of the orthographic projection of the shield machine and the orthographic projection of the box body is semicircular, so that the cross-section of the tunnel excavated by the shield machine is semicircular, and the pipe segment is constructed in a semicircular arc shape; the cross-section of the cutter head is circular, the cross-section of a part of the structure of the shield machine body is circular, and the cross-section of another part of the structure of the shield machine body is semicircular

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a schematic diagram of a shield tunnel test device according to an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of a shield tunnel test device according to an embodiment of the present invention from another angle;

[0022] Figure 3 is a schematic diagram of a shield machine and a segment according to an embodiment of the present invention;

[0023] Figure 4 yes Figure 3 Schematic diagram of the cross section at AA;

[0024] Figure 5 yes Figure 3 Schematic diagram of the cross section at the middle BB;

[0025] Figure 6 yes Figure 3 Schematic diagram of the cross section at CC;

[0026] Figure 7 is a schematic diagram of assembling a plurality of pipe segments according to an embodiment of the present invention;

[0027] Figure 8 is a schematic diagram of a pipe segment according to an embodiment of the present invention.

[0028] Reference numerals:

[0029] Model box 1; box body 11; top communication hole 111; communication cavity 112; bottom communication hole 113; test soil 12; first cover 13; second cover 14; baffle 15; mounting beam 16; pressure member 17;

[0030] A first driving member 2;

[0031] Shield machine assembly 3; shield machine 31; shield machine body 311; cutter head 312; disc body 3121; banner 3122; blade 3123; stirring member 3124; cabin 313; soil cabin 3131; soil outlet 31311; equipment cabin 3132; assembly cabin 3133; second driving member 32;

[0032] Tube segment 4; mounting groove 41; mounting hole 42;

[0033] A first mounting member 51; a second mounting member 52;

[0034] Screw rod 6; guide rail 7;

[0035] Transmission assembly 8; first transmission shaft 81; second transmission shaft 82; first gear 83; second gear 84;

[0036] Partition plate 9; first partition plate 91; second partition plate 92;

[0037] Shield tunnel testing device 100. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] Reference below Figure 1-Figure 8 A shield tunnel testing device 100 according to an embodiment of the present invention is described.

[0040] like Figure 1 and Figure 2 As shown, the shield tunnel test device 100 according to an embodiment of the present invention includes: a model box 1, a first driving member 2, a shield machine assembly 3 and a plurality of segments 4, the model box 1 includes a box body 11, the box body 11 defines a receiving space, the receiving space is filled with a test soil 12, the first driving member 2 is connected to the shield machine assembly 3 by transmission, the shield machine assembly 3 includes a shield machine 31, a second driving member 32, the second driving member 32 is connected to the shield machine 31 by transmission, and the first driving member 2 is used to drive the shield machine assembly 3 along the first direction The second driving member 32 is used to drive the shield machine 31 to work so as to excavate a tunnel in the test soil body 12. Along the second direction, the shield machine 31 is located on one side of the box body 11, and along the first direction, the orthographic projection of the shield machine 31 partially overlaps with the orthographic projection of the box body 11, so that the cross-section of the tunnel excavated by the shield machine 31 is partially circular, the pipe segment 4 is arc-shaped and adapted to the tunnel, and multiple pipe segments 4 are connected in sequence. After the shield machine 31 excavates a tunnel of a preset distance, a preset number of pipe segments 4 are attached to the wall of the tunnel.

[0041] Among them, the shield tunnel test device 100 can be used to simulate the shield tunnel simulation excavation process. The model box 1 of the shield tunnel test device 100 includes a box body 11. The box body 11 can be constructed as a rectangular parallelepiped. The box body 11 defines a receiving space, and the receiving space is filled with a test soil body 12 for simulating the soil layer. The shield machine assembly 3 of the shield tunnel test device 100 can excavate the test soil body 12 to excavate a tunnel.

[0042] As some embodiments of the present application, the box body 11 can be made of high-strength transparent material. While ensuring that the box body 11 has sufficient structural strength, test personnel can directly observe the changes in the test soil 12 in the box body 11 and the excavation conditions of the tunnel to collect more accurate test data.

[0043] The first driving member 2 of the shield tunnel test device 100 can be a motor, which is transmission-connected to the shield machine assembly 3. The first driving member 2 is used to drive the shield machine assembly 3 to move in a first direction so that the shield machine assembly 3 can excavate the test soil 12 to simulate the tunnel excavation process. The shield machine assembly 3 includes a shield machine 31 and a second driving member 32. The second driving member 32 can be a motor, which is transmission-connected to the shield machine 31. The second driving member 32 is used to drive the shield machine 31 to work so that the shield machine 31 can excavate the test soil 12 and excavate a tunnel.

[0044] Along the second direction, the shield machine 31 is located on one side of the box body 11, and along the first direction, the orthographic projection of the shield machine 31 partially overlaps with the orthographic projection of the box body 11. In the process of the shield machine 31 excavating the tunnel, the shield machine 31 can move along the first direction from one side of the box body 11 to the other side of the box body 11 to excavate a tunnel in the box body 11. The orthographic projection of the tunnel along the first direction basically overlaps with the orthographic projection of the shield machine 31 along the first direction, and the cross-section of the tunnel excavated by the shield machine 31 is partially circular.

[0045] By making the orthographic projection of the shield machine 31 partially overlap with the orthographic projection of the box body 11 along the first direction, the shield machine 31 can only excavate a tunnel with a partially circular cross-section, thereby reducing the volume of the box body 11. For example, if the excavated tunnel cross-section is semicircular, the volume of the box body 11 can be half of the existing test box, thereby reducing the area of ​​the ground occupied by the shield tunnel test device 100, and reducing the cost of manufacturing the model box 1, thereby reducing the test cost. In addition, such a setting can facilitate test personnel to observe the process of tunnel excavation by the shield machine 31, and improve the process controllability of the shield tunnel excavation test.

[0046] The shield tunnel test device 100 can have multiple segments 4, and the multiple segments 4 can be connected in sequence. When the shield machine 31 completely enters the box body 11 along the first direction, the segments 4 are assembled in the shield machine 31. After the shield machine 31 excavates a preset distance of tunnel, a preset number of segments 4 are attached to the shield machine 31, and adjacent segments 4 are fixedly connected. When the shield machine 31 advances forward along the first direction, the spliced ​​segments 4 are removed from the shield machine 31 (i.e., attached to the wall of the tunnel). The segments 4 removed from the shield machine 31 can withstand the soil pressure around the tunnel wall, so as to simulate the process of assembling the segments 4 in real time when the shield machine 31 excavates the tunnel.

[0047] In the above embodiment, by making the orthographic projection of the shield machine 31 along the first direction partially overlap with the orthographic projection of the box body 11 along the first direction, the shield machine 31 can excavate a tunnel with a partially circular cross-section on the side of the box body 11, so as to reduce the volume of the box body 11 and the area occupied by the shield tunnel test device 100 on the ground, thereby saving the test cost. In addition, by assembling the segments 4 in the shield machine 31, the real-time assembly process of the segments 4 when the shield machine 31 excavates the tunnel can be simulated, so as to improve the restoration degree of the simulated excavation process of the shield tunnel, which is beneficial to improving the accuracy and authenticity of the results data of the simulated excavation process of the shield tunnel.

[0048] In some embodiments of the present invention, Figure 1 As shown, the model box 1 also includes: a first cover body 13, a second cover body 14 and a plurality of baffles 15. Along the first direction, the first cover body 13 and the second cover body 14 are respectively used to cover both sides of the tunnel and are detachably connected to the box body 11. The plurality of baffles 15 are detachably connected to the box body 11 and are arranged in sequence along the first direction. Along the second direction, the plurality of baffles 15 are located on the side where the shield machine 31 is located and are used to cover the tunnel.

[0049] The tunnel to be excavated in the model box 1 has an entrance and an exit, and the first cover 13 and the second cover 14 of the model box 1 are used to cover the entrance and the exit of the tunnel respectively, and the first cover 13 and the second cover 14 can be detachably connected to the box body 11. The multiple baffles 15 of the model box 1 can be arranged in sequence along the first direction, and along the second direction, the multiple baffles 15 are located on the side where the shield machine 31 is located and are used to cover the tunnel, and the multiple baffles 15 can be detachably connected to the model box 1.

[0050] Before simulating tunnel excavation, the first cover body 13, the second cover body 14 and the multiple baffles 15 are all connected to the box body 11 to cover the test soil 12 to be excavated. When the test soil 12 is filled into the receiving space in layers and consolidated, the first cover body 13, the second cover body 14 and the multiple baffles 15 can withstand the pressure of the test soil 12 and prevent the test soil 12 from being discharged from the box body 11 from the first cover body 13, the second cover body 14 and the multiple baffles 15, so that the filling process and the consolidation process can proceed smoothly.

[0051] When it is necessary to excavate a tunnel, the first cover body 13 and at least one retaining bar 15 can be removed so that the shield machine 31 can excavate the test soil 12. After the shield machine 31 completely excavates the test soil 12 along the first direction, the first cover body 13 is installed to the position before removal. After the shield machine 31 excavates a preset distance of tunnel in the first direction, a preset number of unremoved retaining bars 15 are removed so that the shield machine 31 can continue to excavate the test soil 12, and after installing the pipe segment 4, the previously removed retaining bars 15 are installed to the position before removal. When the shield machine 31 is about to excavate to the exit end of the tunnel, the second cover body 14 can be removed so that the shield machine 31 can continue to excavate the test soil 12 along the first direction and finally move out of the box body 11. After that, all retaining bars 15 and the second cover body 14 are installed to the position before removal.

[0052] In the above embodiment, by providing a first cover body 13, a second cover body 14 and a plurality of baffles 15 which are detachably connected to the model box 1, the first cover body 13, the second cover body 14 and the plurality of baffles 15 can be flexibly disassembled and assembled according to test needs before and after the test, thereby improving the degree of restoration of the simulated excavation process of the shield tunnel, and allowing the shield tunnel test device 100 to be used multiple times, thereby improving the practicality and reliability of the shield tunnel test device 100.

[0053] As some embodiments of the present application, the shield tunnel test device 100 also includes a data acquisition system, which includes at least one data acquisition device and a corresponding data processor. When the test soil 12 is filled in layers, at least one data acquisition device can be buried in the test soil 12 according to the test needs. The data acquisition device includes but is not limited to a pore water pressure gauge, an optical fiber sensor, a displacement meter, an earth pressure box, etc. A data acquisition device for recording the excavation parameters of the shield machine 31 is installed on the shield machine 31 to collect data including the rotation speed, torque, thrust, thrust speed, and soil chamber 3131 pressure of the shield machine 31. The data acquisition device is electrically connected to the data processor. The data acquisition device can collect corresponding test data and transmit the test data to the data processor, and the test data can be exported from the computer terminal of the peripheral device. The test data can be used for subsequent analysis and research to provide reference data for the design and construction of the shield tunnel, and scientifically guide the design and construction of the shield tunnel through data analysis.

[0054] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the shield tunnel test device 100 also includes: a first mounting member 51, a screw rod 6 and a connecting sleeve, the first mounting member 51 is arranged on the model box 1, the first driving member 2 is arranged on the model box 1 and / or the first mounting member 51, the screw rod 6 is rotatably arranged on the first mounting member 51 and is transmission-connected to the first driving member 2, the connecting sleeve is arranged on the outside of the screw rod 6 and is threadedly connected to the screw rod 6, and the shield machine assembly 3 is connected to the connecting sleeve.

[0055] Among them, the first mounting member 51 of the shield tunnel test device 100 can be fixedly installed on the model box 1, the first mounting member 51 can extend along the first direction, the first mounting member 51 can be constructed as a long plate-like structure, the screw rod 6 of the shield tunnel test device 100 can extend along the first direction, the screw rod 6 can be rotatably arranged on the first mounting member 51, the connecting sleeve of the shield tunnel test device 100 can be sleeved on the outside of the screw rod 6 and screwed with the screw rod 6, the shield machine assembly 3 can be welded or bolted to the connecting sleeve, the shield machine assembly 3 is connected to the screw rod 6 through the connecting sleeve, and the screw rod 6 can drive the shield machine assembly 3 to move along the first direction.

[0056] The first drive member 2 can be connected to the screw rod 6 by transmission. The first drive member 2 can be arranged in the model box 1, or the first drive member 2 can be arranged in the first mounting member 51, or the first drive member 2 can be arranged in the model box 1 and the first mounting member 51, so that the first drive member 2 is firmly installed. The first drive member 2 can drive the screw rod 6 to rotate around the axis of the screw rod 6. When the screw rod 6 rotates around its axis, the connecting sleeve sleeved on the outside of the screw rod 6 can move along the first direction to drive the shield machine assembly 3 to move along the first direction, so that the shield machine 31 can excavate the test soil 12 to simulate the process of tunnel excavation. By setting the screw rod 6, the excavation speed of the shield machine 31 when excavating the tunnel can be accurately controlled to simulate the constantly changing propulsion speed in the actual shield construction, and improve the restoration degree of the simulated excavation process of the shield tunnel.

[0057] As some embodiments of the present application, the screw rod 6 can adopt a high-precision ball screw to more accurately control the excavation speed of the shield machine 31 when excavating the tunnel, making the shield tunnel simulation excavation process more reliable.

[0058] As some embodiments of the present application, the first mounting member 51 can be welded, bolted, etc. to the model box 1. As some embodiments of the present application, the first mounting member 51 can be integrally formed with the model box 1.

[0059] As some embodiments of the present application, the first driving member 2 can be welded, bolted, etc. to the model box 1. As some embodiments of the present application, the first driving member 2 can be welded, bolted, etc. to the first mounting member 51.

[0060] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the shield tunnel test device 100 also includes: multiple guide rails 7 and a second mounting member 52, the multiple guide rails 7 are all arranged on the first mounting member 51 and extend along the first direction, the second mounting member 52 is slidably matched with the guide rails 7 and fixedly connected to the connecting sleeve, and the shield machine assembly 3 is arranged on the second mounting member 52.

[0061] Among them, multiple guide rails 7 of the shield tunnel test device 100 are all arranged on the first mounting part 51, the number of guide rails 7 can be two, three, four, etc., and the multiple guide rails 7 can extend along the first direction. The second mounting part 52 of the shield tunnel test device 100 can be fixed with multiple sliders, and the multiple sliders are the same in number and correspond one to one to the multiple guide rails 7. The multiple sliders can slide with the corresponding guide rails 7, and the second mounting part 52 can be welded, snap-connected or bolted to the connecting sleeve, so that the second mounting part 52 can be transmitted and cooperated with the screw 6 through the connecting sleeve, so that the second mounting part 52 can move relative to the first mounting part 51 along the first direction, so as to drive the shield machine assembly 3 arranged on the second mounting part 52 to move relative to the first mounting part 51 along the first direction, so that the shield machine 31 can excavate the test soil 12 along the first direction to simulate the shield tunnel excavation process. By making multiple guide rails 7 and multiple sliders slide together, the shield machine 31 can more accurately excavate the test soil 12 along the first direction, reducing the risk of tilting and offsetting of the shield machine 31, thereby reducing errors and improving the restoration degree of the shield tunnel simulation excavation process.

[0062] As a specific embodiment of the present application, two guide rails 7 can be provided on the first mounting member 51, and the two guide rails 7 are respectively located on both sides of the width direction of the first mounting member 51, so as to increase the spacing distance between the two guide rails 7 to a certain extent, so that the first mounting member 51 can support the second mounting member 52 through the two guide rails 7, so that the second mounting member 52 is more stable when moving along the first direction, and the risk of the second mounting member 52 tilting or offsetting when moving along the first direction is reduced.

[0063] As some embodiments of the present application, the shield machine assembly 3 can be welded, bolted, etc. to the second mounting member 52. As some embodiments of the present application, part of the structure of the shield machine assembly 3 can be integrally formed with the second mounting member 52.

[0064] In some embodiments of the present invention, Figure 1-Figure 4 As shown, the shield tunnel test device 100 also includes: a transmission assembly 8, the shield machine 31 includes: a shield machine body 311, a cutter head 312, the cutter head 312 is arranged on the shield machine body 311, and the transmission assembly 8 is transmission-connected between the second driving member 32 and the cutter head 312.

[0065] Among them, the cutterhead 312 of the shield machine 31 is arranged on the shield machine body 311. Before excavating the tunnel, the cutterhead 312 is arranged on the side of the shield machine body 311 close to the box body 11. The cutterhead 312 can rotate around the axis direction of the shield machine body 311. When the cutterhead 312 rotates, it can cut the test soil 12. The transmission assembly 8 of the shield tunnel test device 100 is connected between the second drive member 32 and the cutterhead 312. The transmission assembly 8 can have multiple transmission shafts and multiple transmission gears. The multiple transmission shafts and multiple transmission gears can be matched to transmit the driving force of the second drive member 32 to the cutterhead 312, so that the shield machine 31 can excavate a tunnel in the test soil 12. By setting the transmission assembly 8, the driving force of the second drive member 32 can be reliably transmitted to the cutterhead 312, and the direction of the force or torque can be adjusted according to actual needs, so that the volume of the shield tunnel test device 100 is small and the floor space is reduced.

[0066] As some embodiments of the present application, the first driving member 2 can drive the shield machine assembly 3 to move in a first direction so that the shield machine 31 can excavate the test soil 12, and the second driving member 32 can enable the shield machine 31 to excavate a tunnel in the test soil 12. By simultaneously setting the first driving member 2 and the second driving member 32, the effect of automatic tunnel excavation by the shield machine 31 can be achieved, so as to improve the degree of automation of the shield tunnel test device 100, and can simplify the test process and improve the test efficiency, which is conducive to improving the practicality and reliability of the shield tunnel test device 100.

[0067] In some embodiments of the present invention, Figure 3 and Figure 4 As shown, the transmission assembly 8 includes: a first transmission shaft 81, a second transmission shaft 82, a first gear 83, and a second gear 84. The second driving member 32 is transmission-connected to the first transmission shaft 81, the first gear 83 is transmission-connected to the first transmission shaft 81 and meshes with the second gear 84, the second gear 84 is transmission-connected to the second transmission shaft 82, and the second transmission shaft 82 is transmission-connected to the cutter disc 312, wherein the axis of the first transmission shaft 81 and the axis of the second transmission shaft 82 have an angle.

[0068] Specifically, the second driving member 32 can be connected to the first transmission shaft 81 of the transmission assembly 8, and the second driving member 32 can drive the first transmission shaft 81 to rotate around the axis of the first transmission shaft 81. The first gear 83 of the transmission assembly 8 can be connected to the first transmission shaft 81. When the first transmission shaft 81 rotates around its axis, the first transmission shaft 81 can drive the first gear 83 to rotate around the axis of the first transmission shaft 81. The second gear 84 of the transmission assembly 8 can be meshed with the first gear 83, and the second gear 84 can be connected to the second transmission shaft 82. When the first gear 83 rotates around the axis of the first transmission shaft 81, the second gear 84 can be driven to rotate around the axis of the second transmission shaft 82 to drive the second transmission shaft 82 to rotate around the axis of the second transmission shaft 82, and the second transmission shaft 82 can be connected to the cutter head 312. When the second transmission shaft 82 rotates around its axis, the second transmission shaft 82 can drive the cutter head 312 to rotate around the axis of the second transmission shaft 82, so that the cutter head 312 can cut the test soil 12 to excavate a tunnel.

[0069] The axis of the first transmission shaft 81 can have an angle with the axis of the second transmission shaft 82 to change the direction of the transmission torque. For example, the angle between the axis of the first transmission shaft 81 and the axis of the second transmission shaft 82 can be 90°. The second transmission shaft 82 can extend along the first direction, and the first transmission shaft 81 can extend along the second direction. The first direction is perpendicular to the second direction. The second drive member 32 is connected to the first transmission shaft 81 in transmission connection, so that the first transmission shaft 81, the first gear 83 and the second drive member 32 can be arranged on the side of the shield machine 31 away from the box body 11 along the second direction to reduce the diameter of the shield machine 31, which can improve the space utilization of the shield machine 31. Accordingly, the volume of the model box 1 can be reduced, and then the volume and footprint of the shield tunnel test device 100 can be reduced as a whole, saving space, reducing material usage and manufacturing costs, and reducing test costs.

[0070] As some embodiments of the present application, the cross-sectional diameter of the shield machine 31 can be reduced to 250 mm to achieve the purpose of miniaturization and lightweight design.

[0071] In some embodiments of the present invention, Figure 1 and Figure 3As shown, the shield machine 31 also includes: a plurality of partition plates 9, the shield machine body 311 defines a cabin 313, and the plurality of partition plates 9 are all arranged on the cabin 313 to divide the cabin 313 into a plurality of sub-cabins, the plurality of sub-cabins include a soil cabin 3131, an equipment cabin 3132, and an assembly cabin 3133 arranged in sequence along a first direction, the cutter head 312 is located at one end of the soil cabin 3131 away from the equipment cabin 3132, the side wall of the soil cabin 3131 has an earth outlet 31311, part of the structure of the transmission assembly 8 is located in the equipment cabin 3132, and the segments 4 can be spliced ​​in the assembly cabin 3133 so as to be attached to the wall of the tunnel during the excavation process of the shield machine 31.

[0072] Among them, the multiple partition plates 9 of the shield machine 31 can divide the cabin 313 of the shield machine body 311 into multiple sub-cabins arranged in sequence along the first direction, and the multiple sub-cabins include a soil cabin 3131, an equipment cabin 3132, and an assembly cabin 3133. The first partition plate 91 is arranged between the soil cabin 3131 and the equipment cabin 3132, and the second partition plate 92 is arranged between the equipment cabin 3132 and the assembly cabin 3133. The cutter head 312 can be located at one end of the soil cabin 3131 away from the equipment cabin 3132. The soil cut by the cutter head 312 can be discharged from the shield machine 31 through the outlet 31311 on the side wall of the soil cabin 3131, so as to simulate the process of transferring soil and gravel when the shield machine 31 excavates a tunnel.

[0073] As some embodiments of the present application, the excavation port 31311 can be set at the bottom of the side wall of the soil chamber 3131, and when the shield machine 31 excavates the test soil 12, the excavation port 31311 is located outside the box body 11, so that the cut test soil 12 can be smoothly discharged from the shield machine 31 from the excavation port 31311 and will not be discharged into the tunnel, which can reduce the risk of the cut test soil 12 blocking the soil chamber 3131, and can also make the tunnel wall relatively flat, so as to facilitate the installation of the pipe segment 4.

[0074] Part of the structure of the transmission assembly 8 can be located in the equipment cabin 3132. Specifically, the first gear 83 and the second gear 84 can be located in the equipment cabin 3132. The equipment cabin 3132 can protect the first gear 83 and the second gear 84, reduce the risk of the test soil 12 under cutting affecting the transmission of the first gear 83 and the second gear 84, so as to ensure that the first gear 83 and the second gear 84 accurately transmit power. The first transmission shaft 81 is arranged in the shield machine body 311 along the second direction, a part of the structure of the first transmission shaft 81 is located in the equipment cabin 3132, and another part of the structure of the first transmission shaft 81 is located on the side of the shield machine body 311 away from the box body 11 along the second direction. The second transmission shaft 82 is arranged in the first partition plate 91 along the first direction, a part of the structure of the second transmission shaft 82 is located in the equipment cabin 3132, and another part of the structure of the second transmission shaft 82 is located in the soil cabin 3131 and is connected to the cutter head 312 in transmission.

[0075] The equipment cabin 3132 is separated from the soil cabin 3131 and the assembly cabin 3133 by the first partition plate 91 and the second partition plate 92. This arrangement can protect the transmission component 8 and prevent the cut soil from entering the equipment cabin 3132 to affect the transmission effect of the transmission component 8 or damage the transmission component 8, thereby improving the transmission effect of the transmission component 8 and extending the service life of the transmission component 8.

[0076] The segments 4 can be spliced ​​in the assembly chamber 3133, and multiple segments 4 can be connected in sequence. After the shield machine 31 excavates a preset distance of tunnel, a preset number of segments 4 are assembled in the assembly chamber 3133, and the assembled segments 4 are connected to the segments 4 that have been attached to the tunnel wall (in the case where there are segments 4 that have been attached to the tunnel wall). When the shield machine 31 advances forward in the first direction during the excavation process, the spliced ​​segments 4 are removed from the shield machine 31 and attached to the wall of the tunnel to withstand the soil pressure of the tunnel, so as to simulate the process of the segments 4 being attached to the tunnel wall to support the tunnel in actual shield construction, thereby improving the degree of restoration of the simulated excavation process of the shield tunnel.

[0077] As some embodiments of the present application, the first partition plate 91 can be welded, snap-connected or bolted to the shield machine body 311 . As some embodiments of the present application, the first partition plate 91 can be integrally formed with the shield machine body 311 .

[0078] As some embodiments of the present application, the second partition plate 92 can be welded, snap-connected or bolted to the shield machine body 311 . As some embodiments of the present application, the second partition plate 92 can be integrally formed with the shield machine body 311 .

[0079] As some embodiments of the present application, the first partition plate 91 and the second partition plate 92 may both be made of steel to improve the structural strength of the first partition plate 91 and the second partition plate 92 at a low cost.

[0080] In some embodiments of the present invention, Figure 3 and Figure 5 As shown, the blade disc 312 includes: a disc body 3121, multiple banners 3122, multiple blades 3123 and multiple stirring members 3124, the banners 3122 are detachably provided on the disc body 3121, the blades 3123 are detachably provided on the banners 3122, and the multiple stirring members 3124 are all provided on the disc body 3121.

[0081] The disc body 3121 of the cutter disc 312 can be connected to the second transmission shaft 82 in a transmission manner, and the second transmission shaft 82 can drive the disc body 3121 to rotate around the axis direction of the second transmission shaft 82. The two ends of the strip 3122 of the cutter disc 312 are detachably provided on the disc body 3121, and the blade 3123 is detachably provided on the strip 3122. Each strip 3122 can be provided with a plurality of blades 3123, and the plurality of blades 3123 are arranged at intervals along the length direction of the strip 3122. The blade 3123 can be used to cut the test soil 12, and can cut the consolidated test soil 12 into pieces. The number of the strips 3122 and the blades 3123 can be adjusted according to the test needs to adjust the opening rate, and it is convenient to repair or replace the strips 3122 and the blades 3123.

[0082] The multiple stirring members 3124 of the cutter disc 312 are all arranged on the side of the disc body 3121 away from the blade 3123. The multiple stirring members 3124 can be constructed as a long strip structure. The multiple stirring members 3124 can be used to stir the cut soil so that the cut soil can be discharged more smoothly from the discharge port 31311, so as to reduce the risk of the cut soil clogging the soil chamber 3131, so as to improve the continuity and reliability of the shield tunnel simulation excavation process.

[0083] As some embodiments of the present application, the number of banners 3122 can be two, four, six, etc., the number of blades 3123 can be ten, twenty, thirty, etc., and the number of stirring elements 3124 can be two, four, six, etc. The number of banners 3122, blades 3123 and stirring elements 3124 can be adjusted according to the needs of the simulation test to adjust the opening ratio.

[0084] As some embodiments of the present application, the banner 3122 can be connected to the disk body 3121 by snap-fitting or bolting, etc. As some embodiments of the present application, the blade 3123 can be connected to the banner 3122 by snap-fitting or bolting, etc.

[0085] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the shield tunnel test device 100 also includes: a pressure piece 17, and the model box 1 also includes: a plurality of mounting beams 16, the pressure piece 17 is arranged above the test soil body 12, the plurality of mounting beams 16 are all detachably connected to the box body 11 and are arranged above the box body 11, and the mounting beams 16 are used to cover the pressure piece 17.

[0086] Among them, the pressure piece 17 of the shield tunnel test device 100 can be arranged above the test soil 12, and the multiple mounting beams 16 of the model box 1 are detachably connected to the box body 11 and are arranged above the box body 11. The multiple mounting beams 16 can be used to cover the pressure piece 17. The pressure piece 17 can provide the required consolidation load to the test soil 12 according to the test needs to consolidate the layered filled test soil 12 to a preset height. The mounting beam 16 has good structural strength. The mounting beam 16 can withstand the pressure of the pressure piece 17 and is not easy to deform, so as to apply a reaction force to the pressure piece 17, so that the pressure of the pressure piece 17 can be applied to the test soil 12, so that the pressure piece 17 is coordinated with the surface deformation of the test soil 12 during the loading process and the excavation process to simulate the pressure change of the soil in actual shield construction.

[0087] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the box body 11 has a top communicating hole 111, a bottom communicating hole 113, and a communicating cavity 112. The top communicating hole 111 and the communicating cavity 112 are both located at the upper end of the box body 11, and the bottom communicating hole 113 is located at the lower end of the box body 11. The bottom communicating hole 113 communicates between the receiving space and the outside of the box body 11, and the top communicating hole 111 communicates between the receiving space and the communicating cavity 112, and the communicating cavity 112 communicates with the outside of the box body 11.

[0088] Among them, the top connecting hole 111 and the connecting cavity 112 of the box body 11 can be located at the upper end of the box body 11, the top connecting hole 111 can be connected between the receiving space and the connecting cavity 112, the connecting cavity 112 can be connected with the outside of the box body 11, and the top connecting hole 111 can have the functions of water injection and drainage. The water outside the box body 11 can enter the receiving space through the connecting cavity 112 and the top connecting hole 111 in turn, and the water in the receiving space can also be discharged to the outside of the box body 11 through the top connecting hole 111 and the connecting cavity 112 in turn.

[0089] When water needs to be injected into the receiving space, the communication port between the communication cavity 112 and the outside of the box body 11 can be blocked, and the water in the communication cavity 112 can enter the receiving space through the top communication hole 111. When the receiving space needs to be drained, the water in the receiving space can be discharged from the receiving space from the top communication hole 111 and the communication cavity 112 in sequence. This arrangement allows the top communication hole 111 to have both the functions of water injection and drainage, which is conducive to saving space.

[0090] The bottom connecting hole 113 is located at the lower end of the box body 11. The bottom connecting hole 113 connects the containing space with the outside of the box body 11. The bottom connecting hole 113 can drain water. By setting the bottom connecting hole 113, it can be used to simulate the drainage, consolidation and settlement process of the soil layer around the tunnel after shield tunnel excavation, so as to improve the restoration degree of the simulated excavation process of the shield tunnel.

[0091] In some embodiments of the present invention, Figure 7 and Figure 8 As shown, the tube segment 4 has a mounting groove 41 , and along the thickness direction of the tube segment 4 , the bottom wall of the mounting groove 41 has a mounting hole 42 penetrating the tube segment 4 .

[0092] Among them, the installation groove 41 of the pipe segment 4 can extend along the thickness direction of the pipe segment 4, and the bottom wall of the installation groove 41 has a installation hole 42 that penetrates the pipe segment 4 along the thickness direction of the pipe segment 4. The installation holes 42 of two adjacent pipe segments 4 can be arranged opposite to each other, and bolts can be inserted into the installation holes 42 of two adjacent pipe segments 4 to connect the two adjacent pipe segments 4 with bolts. By setting the installation groove 41, an operable space can be provided for inserting and fixing the bolts, which is convenient for test personnel to assemble the pipe segment 4, improves the practicability of the pipe segment 4, and reduces the work intensity of the test personnel.

[0093] As some embodiments of the present application, there can be multiple installation grooves 41 and installation holes 42 in one-to-one correspondence. The number of installation grooves 41 can be two, four, six, etc., and the number of installation holes 42 can be two, four, six, etc. By setting multiple installation grooves 41 and installation holes 42, two adjacent pipe segments 4 can have multiple bolt connection points, so that the two adjacent pipe segments 4 are firmly connected, and the stability of the connection of multiple pipe segments 4 in sequence can be improved, so that the pipe segments 4 can withstand the soil pressure around the tunnel wall after assembly, thereby improving the restoration degree of the simulated excavation process of the shield tunnel.

[0094] As some embodiments of the present application, there can be multiple mounting grooves 41 and mounting holes 42 in one-to-one correspondence. The multiple mounting grooves 41 are arranged at intervals along the extension direction of the pipe segment 4 to provide sufficient operating space for assembling the pipe segment 4, thereby reducing the difficulty of assembly and improving the reliability of the use of the pipe segment 4.

[0095] In some embodiments of the present invention, Figure 7 and Figure 8 As shown, along the thickness direction of the tube segment 4, both sides of the tube segment 4 have mounting grooves 41.

[0096] Among them, along the thickness direction of the segment 4, the segment 4 has two end faces. When installing a segment 4, the two end faces of the segment 4 can be used to abut against the end face of the previously installed segment 4. That is to say, the segment 4 can still be installed and used after being flipped 180° around the horizontal plane where the axis of the shield machine 31 is located, so that when assembling the segment 4, there is no need to consider the positive and negative issues of the segment 4 along the thickness direction of the segment 4, so as to reduce the difficulty of assembling the segment 4 and reduce the work intensity of the test personnel.

[0097] In some embodiments of the present invention, Figure 2-Figure 8As shown, the overlapping part of the orthographic projection of the shield machine 31 and the orthographic projection of the box body 11 is semicircular, so that the cross-section of the tunnel excavated by the shield machine 31 is semicircular, and the pipe segment 4 is constructed in a semicircular arc shape, the cross-section of the cutter head 312 is circular, the cross-section of a part of the structure of the shield machine body 311 is circular, and the cross-section of another part of the structure of the shield machine body 311 is semicircular.

[0098] Among them, the cross-section of the cutter head 312 and the cross-section of the soil chamber 3131 can both be circular, the cross-section of the equipment chamber 3132, the cross-section of the assembly chamber 3133, the overlapping part of the orthographic projection of the shield machine 31 and the orthographic projection of the box body 11, and the cross-section of the tunnel excavated by the shield machine 31 can all be semicircular. By making the overlapping part of the orthographic projection of the shield machine 31 and the orthographic projection of the box body 11 semicircular, the cross-section of the tunnel excavated by the shield machine 31 can be made semicircular, and the pipe segment 4 is constructed into a semicircular arc shape, and the radius of the outer wall of the pipe segment 4 is approximately equal to the radius of the tunnel cross-section, so that the pipe segment 4 can be comparable to the tunnel size and fit closely, so that the pipe segment 4 can better withstand the soil pressure around the tunnel wall, so as to improve the restoration degree of the simulated excavation process of the shield tunnel, and such a setting can reduce the production difficulty of the shield tunnel test device 100.

[0099] The shield tunnel test device 100 proposed in the present application adopts a half-model box 1 design (that is, compared with the prior art, the volume of the model box 1 is half of the current mainstream test box), and can simulate the shield tunnel excavation and segment 4 assembly integrated test process, which significantly improves the degree of restoration of the actual working conditions. The shield tunnel test device 100 is small in size, low in cost, simple to operate and highly feasible, and can obtain real and accurate test data to ensure the efficiency and safety of shield tunnel construction.

[0100] The working process of the shield tunnel test device 100 proposed in this application is as follows:

[0101] Before the shield tunnel simulation excavation test, based on the working conditions of the shield tunnel simulation excavation test to be carried out, the size of the shield machine 31 and the pipe segment 4 is determined, the size of the model box 1 is determined according to the aperture of the excavated tunnel, the shield tunnel test device 100 is installed and debugged, the test soil 12 is filled in the receiving space, and the data acquisition device is installed, the pressure member 17 is started to provide the required consolidation load for the test soil 12, and water is injected into the receiving space through the top connecting hole 111 and the connecting cavity 112. After that, the shield machine 31 is installed and debugged, the first cover 13 and at least one baffle 15 are removed, the second driving member 32 is started to drive the cutter head 312 to rotate, so that the shield machine 31 can be driven to cut the test soil 12, and the first driving member 2 is started so that the shield machine 31 can move along the first direction to excavate the test soil 12 to achieve automatic excavation.

[0102] The test soil 12 cut by the cutter head 312 is discharged from the shield machine 31 through the excavation port 31311. After the shield machine 31 completely excavates the test soil 12, the first cover 13 is installed to the position before disassembly. After the shield machine 31 excavates a preset distance of tunnel, a preset number of undisassembled retaining bars 15 are disassembled, and a preset number of pipe segments 4 are manually assembled in the shield machine 31. Adjacent pipe segments 4 are connected with bolts. When the shield machine 31 excavates forward, the assembled pipe segments 4 are disengaged from the shield machine 31. The pipe segments 4 disengaged from the shield machine 31 can withstand the soil pressure around the tunnel wall. Force (i.e. attached to the wall of the tunnel). During the test, it is necessary to record data such as the rotation speed of the cutter head 312 of the shield machine 31, torque, thrust, thrust speed, and pressure of the soil chamber 3131. The data acquisition system will collect the test data of the data collector pre-buried in the test soil 12 during the test and for a period of time after the test, and will collect the test data of the data collector installed on the shield machine 31, and transmit it to the software system of the computer terminal for data analysis. After the test, all the baffles 15 and the second cover body 14 will be installed to the position before disassembly to maintain the joint integrity of the box body 11.

[0103] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0104] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0105] In the description of the present invention, "plurality" means two or more.

[0106] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0107] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0108] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0109] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A shield tunnel test device (100), characterized in that: include: A model box (1), the model box (1) comprising a box body (11), the box body (11) defining a receiving space, the receiving space being filled with a test soil (12); A first driving member (2) and a shield machine assembly (3), wherein the first driving member (2) is in driving connection with the shield machine assembly (3), the shield machine assembly (3) comprises a shield machine (31), and a second driving member (32), the second driving member (32) is in driving connection with the shield machine (31), the first driving member (2) is used to drive the shield machine assembly (3) to move along a first direction, the second driving member (32) is used to drive the shield machine (31) to work so as to excavate a tunnel in the test soil body (12), along the second direction, the shield machine (31) is located on one side of the box body (11), and along the first direction, the orthographic projection of the shield machine (31) partially overlaps with the orthographic projection of the box body (11), so that the cross section of the tunnel excavated by the shield machine (31) is partially circular; A plurality of pipe segments (4), wherein the pipe segments (4) are arc-shaped and adapted to the tunnel, and the plurality of pipe segments (4) are connected in sequence. After the shield machine (31) excavates the tunnel of a preset distance, a preset number of the pipe segments (4) are attached to the wall surface of the tunnel.

2. The shield tunnel test device (100) according to claim 1, characterized in that: The model box (1) further comprises: a first cover body (13), a second cover body (14) and a plurality of baffles (15); along the first direction, the first cover body (13) and the second cover body (14) are respectively used to cover the two sides of the tunnel and are both detachably connected to the box body (11); the plurality of baffles (15) are all detachably connected to the box body (11) and are arranged in sequence along the first direction; along the second direction, the plurality of baffles (15) are located on the side where the shield machine (31) is located and are used to cover the tunnel.

3. The shield tunnel test device (100) according to claim 1, characterized in that: Also includes: A first mounting member (51), a screw rod (6) and a connecting sleeve, wherein the first mounting member (51) is arranged on the model box (1), the first driving member (2) is arranged on the model box (1) and / or the first mounting member (51), the screw rod (6) is rotatably arranged on the first mounting member (51) and is drivingly connected to the first driving member (2), the connecting sleeve is arranged on the outside of the screw rod (6) and is threadedly connected to the screw rod (6), and the shield machine component (3) is connected to the connecting sleeve.

4. The shield tunnel test device (100) according to claim 3, characterized in that: Also includes: A plurality of guide rails (7) and a second mounting member (52), wherein the plurality of guide rails (7) are all arranged on the first mounting member (51) and extend along the first direction, the second mounting member (52) is slidably matched with the guide rails (7) and is fixedly connected to the connecting sleeve, and the shield machine assembly (3) is arranged on the second mounting member (52).

5. The shield tunnel test device (100) according to claim 1, characterized in that: Also includes: A transmission assembly (8), wherein the shield machine (31) comprises: a shield machine body (311) and a cutterhead (312), wherein the cutterhead (312) is arranged on the shield machine body (311), and the transmission assembly (8) is transmission-connected between the second driving member (32) and the cutterhead (312).

6. The shield tunnel test device (100) according to claim 5, characterized in that: The transmission assembly (8) comprises: a first transmission shaft (81), a second transmission shaft (82), a first gear (83), and a second gear (84); the second driving member (32) is transmission-connected to the first transmission shaft (81); the first gear (83) is transmission-connected to the first transmission shaft (81) and meshes with the second gear (84); the second gear (84) is transmission-connected to the second transmission shaft (82); the second transmission shaft (82) is transmission-connected to the cutter disc (312); and an axis of the first transmission shaft (81) and an axis of the second transmission shaft (82) have an included angle.

7. The shield tunnel test device (100) according to claim 5, characterized in that: The shield machine (31) further comprises: a plurality of partition plates (9); the shield machine body (311) defines a cabin (313); the plurality of partition plates (9) are arranged on the cabin (313) to divide the cabin (313) into a plurality of sub-cabins; the plurality of sub-cabins comprise a soil cabin (3131), an equipment cabin (3132), and an assembly cabin (3133) arranged in sequence along the first direction; the cutterhead (312) is located at one end of the soil cabin (3131) away from the equipment cabin (3132); the side wall of the soil cabin (3131) has an earth exit (31311); a part of the structure of the transmission assembly (8) is located in the equipment cabin (3132); the pipe segments (4) can be spliced ​​in the assembly cabin (3133) so as to be attached to the wall of the tunnel during the excavation process of the shield machine (31).

8. The shield tunnel test device (100) according to claim 5, characterized in that: The blade disc (312) comprises: a disc body (3121), a plurality of strips (3122), a plurality of blades (3123) and a plurality of stirring members (3124); the strips (3122) are detachably arranged on the disc body (3121); the blades (3123) are detachably arranged on the strips (3122); and the plurality of stirring members (3124) are all arranged on the disc body (3121).

9. The shield tunnel test device (100) according to claim 1, characterized in that: Also includes: A pressure piece (17), the model box (1) further comprising: a plurality of mounting beams (16), the pressure piece (17) being arranged above the test soil body (12), the plurality of mounting beams (16) being detachably connected to the box body (11) and arranged above the box body (11), the mounting beams (16) being used to cover the pressure piece (17).

10. The shield tunnel test device (100) according to claim 1, characterized in that: The box body (11) has a top communicating hole (111), a bottom communicating hole (113), and a communicating cavity (112); the top communicating hole (111) and the communicating cavity (112) are both located at the upper end of the box body (11); the bottom communicating hole (113) is located at the lower end of the box body (11); the bottom communicating hole (113) is connected between the receiving space and the outside of the box body (11); the top communicating hole (111) is connected between the receiving space and the communicating cavity (112); and the communicating cavity (112) is connected to the outside of the box body (11).

11. The shield tunnel test device (100) according to claim 1, characterized in that: The tube segment (4) has a mounting groove (41), and along the thickness direction of the tube segment (4), the bottom wall of the mounting groove (41) has a mounting hole (42) penetrating the tube segment (4).

12. The shield tunnel test device (100) according to claim 11, characterized in that: Along the thickness direction of the tube sheet (4), both sides of the tube sheet (4) are provided with the mounting grooves (41).

13. The shield tunnel test device (100) according to claim 7, characterized in that: The overlapping part of the orthographic projection of the shield machine (31) and the orthographic projection of the box body (11) is semicircular, so that the cross section of the tunnel excavated by the shield machine (31) is semicircular, and the pipe segment (4) is constructed in a semicircular arc shape; The cross section of the cutter head (312) is circular, the cross section of a part of the structure of the shield machine body (311) is circular, and the cross section of another part of the structure of the shield machine body (311) is semicircular.

Images