Tunnel construction equipment

Abstract

The present invention discloses a tunnel construction equipment. The tunnel construction equipment includes: a shield machine, which includes a shield shell, a cutterhead, a shield drive system, a propulsion cylinder group and an assembler. The shield shell includes a front shield shell, an extended shield shell, a middle shield shell and a rear shield shell connected in sequence. The cutterhead is arranged at one end of the front shield shell away from the extended shield shell. The shield drive system is arranged at the front shield shell and connected to the cutterhead; the assembler is arranged at the rear shield shell for assembling tunnel lining segments; the telescopic end of the propulsion cylinder group can abut against the tunnel lining segments to push the shield machine to move; the TRD equipment is arranged in the extended shield shell for continuous wall construction at the bottom of the tunnel. The tunnel construction equipment cleverly combines the shield and TRD methods, and can not only independently carry out shield tunnel construction, but also synchronously construct the continuous wall at the bottom of the tunnel. On the one hand, it realizes the one-time forming of the tunnel and the continuous wall reinforcement at the bottom of the tunnel.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction, and in particular to a tunnel construction device. Background Art

[0002] Existing shield machines are usually only used for tunnel engineering construction. For some projects that require not only tunnel construction but also continuous wall construction at the bottom of the tunnel, existing shield machines cannot meet the construction needs.

[0003] Therefore, how to design a device that can both build a tunnel and perform continuous wall construction at the bottom of the tunnel is a technical problem that technicians in this field currently need to solve. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a tunnel construction device, so as to realize both tunnel construction and continuous wall construction at the bottom of the tunnel.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A tunnel construction equipment, comprising:

[0007] A shield machine, comprising a shield shell, a cutterhead, a shield drive system, a propulsion cylinder group and an assembling machine, wherein the shield shell comprises a front shield shell, an extended shield shell, a middle shield shell and a rear shield shell connected in sequence, the cutterhead is arranged at one end of the front shield shell away from the extended shield shell, the shield drive system is arranged at the front shield shell and connected to the cutterhead; the assembling machine is arranged at the rear shield shell and is used to assemble tunnel lining segments; the telescopic end of the propulsion cylinder group can abut against the tunnel lining segments to push the shield machine to move;

[0008] The TRD equipment is arranged in the extended shield shell and is used for continuous wall construction at the bottom of the tunnel.

[0009] Preferably, in the above-mentioned tunnel construction equipment, the extended shield shell is located in the middle of the front shield shell and the middle shield shell, and the extended shield shell is connected to the front shield shell and the middle shield shell by bolts, and the tail shield shell is coaxially welded and fixed to one end of the middle shield shell away from the extended shield shell.

[0010] Preferably, in the above-mentioned tunnel construction equipment, the extended shield shell is provided with a mounting platform for mounting the TRD equipment and an operating platform for operation;

[0011] The middle shield shell is provided with a material bin and a personnel cabin arranged from top to bottom, and a material transportation system for transporting parts in the material bin to preset workstations in the extended shield shell. The personnel cabin can be connected with the operating platform, and the material bin is connected with the extended shield shell. An electric control cabin is also provided on one side of the material bin close to the tail shield shell.

[0012] Preferably, in the above-mentioned tunnel construction equipment, the bottom of the extended shield shell is provided with a bottom gate, sealing grease and a polymer temporary sealing plate in sequence from the inside to the outside, and the tunnel construction equipment also includes an electric control system, and the bottom gate is electrically connected to the electric control system.

[0013] Preferably, in the above-mentioned tunnel construction equipment, the TRD equipment includes a base frame, a sliding frame, a sliding support, a lifting cylinder, a TRD control host and a chain cutter assembly;

[0014] The sliding frame is hinged to the base frame, the sliding support is slidably connected to the sliding frame, the chain knife assembly includes a chain knife driving end, a chain knife box and a driven knife head connected to the sliding support by bolts, and the number of the chain knife boxes is multiple, the chain knife driving end, the multiple chain knife boxes and a driven knife head are connected in series from top to bottom to form a whole, and the lifting cylinder is arranged on the sliding frame, which is used to drive the chain knife assembly to perform lifting and lowering movements through the sliding support.

[0015] Preferably, in the above tunnel construction equipment, the TRD equipment further comprises a first gripper set, a second gripper set and a third gripper set for supporting the base frame on the inner wall of the elongated shield shell;

[0016] The first support shoe group, the second support shoe group and the third support shoe group are connected to the base frame through the first tightening cylinder group, the second tightening cylinder group and the third tightening cylinder group respectively, and the first support shoe group and the second support shoe group are both slidably connected to the base frame in a first direction, and the third support shoe group is slidably connected to the base frame in a second direction, and the first direction and the second direction are perpendicular to each other.

[0017] Preferably, the above-mentioned tunnel construction equipment also includes a circulation system, which includes a first circulation subsystem and a second circulation subsystem, the first circulation subsystem is connected to the air cushion chamber of the shield machine, and the second circulation subsystem is used for slag slurry transportation and mud replacement of the TRD equipment.

[0018] Preferably, the above-mentioned tunnel construction equipment further includes a pressure maintaining system for adjusting the pressure in the extended shield shell, as well as the pressure in the excavation chamber and the air cushion cabin in the front shield shell.

[0019] Preferably, the above-mentioned tunnel construction equipment also includes a refrigeration circulation system and a thawing circulation system, and a frozen solidification layer is set at the bottom of the extended shield shell. The refrigeration circulation system is used to freeze and solidify the frozen solidification layer, and the thawing circulation system is used to thaw the frozen solidification layer.

[0020] Preferably, in the above-mentioned tunnel construction equipment, a mounting bracket and an annular reinforcement are arranged in the middle shield shell, the number of the propulsion cylinder groups is multiple, and the multiple propulsion cylinder groups are evenly arranged inside the middle shield shell along its circumference, one end of the propulsion cylinder group is connected to the mounting bracket by a floating support, and the other end is connected to the annular reinforcement, and the assembling machine is installed on the side of the mounting bracket away from the annular reinforcement by bolt connection and is located in the tail shield shell.

[0021] When using the tunnel construction equipment provided by the present invention, the tunnel lining segments are assembled by the assembly machine arranged in the rear shield shell, and the cutter head is driven to rotate by the drive system arranged in the front shield shell, so that the cutter head digs the stratum to form a tunnel; after the tunnel construction is completed, the propulsion cylinder group is started, and since the telescopic end of the propulsion cylinder group is in contact with the tunnel lining segments, the shield machine can be pushed to move in the tunnel as the telescopic end of the propulsion cylinder group is extended and retracted. After the shield machine moves to the section of the tunnel where a continuous wall needs to be added, the continuous wall is constructed at the bottom of the tunnel by the TRD equipment arranged in the extended shield shell. It can be seen that the tunnel construction equipment provided by the present invention cleverly combines the shield and TRD methods, and can not only independently carry out shield tunnel construction, but also synchronously construct the continuous wall at the bottom of the tunnel. On the one hand, the one-time reinforcement of the tunnel and the continuous wall at the bottom of the tunnel is realized. On the other hand, since the continuous wall is formed at the bottom of the tunnel, the continuous wall plays a certain supporting role on the tunnel, reducing the sinking phenomenon of the lining segments of the formed tunnel section and improving the tunnel forming quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the overall structure of a tunnel construction equipment provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the internal structure of a shield machine provided by an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the side structure of a TRD device provided by an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of a process of transporting a driven cutter head by a material transport system provided by an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of an installation structure in which a driven cutter head is installed on a chain cutter driving end provided by an embodiment of the present invention;

[0028] Figure 6 A schematic diagram of the first pressure maintenance of the extended shield shell provided by an embodiment of the present invention;

[0029] Figure 7 A schematic diagram of the position of a TRD device during the first excavation provided by an embodiment of the present invention;

[0030] Figure 8 A schematic diagram of preparation before installation of a chain knife box provided by an embodiment of the present invention;

[0031] Fig. 9 A schematic diagram of transporting and installing a chain knife box provided by an embodiment of the present invention;

[0032] Fig.10 A schematic diagram of a second pressure maintenance of the extended shield shell provided by an embodiment of the present invention;

[0033] Fig.11 A schematic diagram of the position of a TRD device during the second excavation provided by an embodiment of the present invention;

[0034] Fig.12 A schematic diagram of transporting and installing the Nth (N>1) chain knife box provided in an embodiment of the present invention;

[0035] Fig.13 A schematic diagram of synchronous construction of a shield machine and TRD equipment provided in an embodiment of the invention.

[0036] Among them, 100 is the shield machine, 101 is the shield shell, 1011 is the front shield shell, 1012 is the extended shield shell, 1012-a is the bottom gate, 1012-b is the sealing grease, 1012-c is the polymer temporary sealing plate, 1012-d is the operating platform, 1013 is the middle shield shell, 1013-a is the installation bracket, 1013-b is the annular reinforcement, 1013-c is the material warehouse, 1013-d is the personnel cabin, 1013-e is the electrical control cabin, 1014 is the tail shield shell, 102 is the cutter head, 103 is the shield 104 is a propulsion cylinder group, 105 is an assembling machine, 200 is a TRD equipment, 201 is a base frame, 202 is a sliding frame, 203 is a chain knife assembly, 2031 is a chain knife driving end, 2032 is a chain knife box, 2033 is a driven knife head, 204 is a first support shoe group, 205 is a second support shoe group, 206 is a third support shoe group, 300 is a circulation system, 400 is an electric control system, 500 is a material transportation system, 600 is a tunnel lining segment, 700 is a frozen solidification layer, X is a first direction, and Y is a second direction. DETAILED DESCRIPTION

[0037] In view of this, the core of the present invention is to provide a tunnel construction equipment to achieve both tunnel construction and continuous wall construction at the bottom of the tunnel.

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] like Figures 1 to 13 As shown, an embodiment of the present invention discloses a tunnel construction equipment, including a shield machine 100 and a TRD equipment 200 (TRD is the abbreviation of Trench cutting Re-mixing Deep, which means a cement soil mixing continuous wall of equal thickness).

[0040] Among them, the shield machine 100 includes a shield shell 101, a cutterhead 102, a shield drive system 103, a propulsion cylinder group 104 and an assembler 105. The shield shell 101 includes a front shield shell 1011, an extended shield shell 1012, a middle shield shell 1013 and a rear shield shell 1014 connected in sequence. The cutterhead 102 is arranged at one end of the front shield shell 1011 away from the extended shield shell 1012. The shield drive system 103 is arranged at the front shield shell 1011 and connected to the cutterhead 102; the assembler 105 is arranged at the rear shield shell 1014 for assembling tunnel lining segments 600; the telescopic end of the propulsion cylinder group 104 can abut against the tunnel lining segments 600 to push the shield machine 100 to move; the TRD equipment 200 is arranged in the extended shield shell 1012 for continuous wall construction at the bottom of the tunnel.

[0041] When the tunnel construction equipment provided by the present invention is used, the tunnel lining segments 600 are assembled by the assembling machine 105 arranged in the rear shield shell 1014, and the cutter head 102 is driven to rotate by the driving system arranged in the front shield shell 1011, so that the cutter head 102 excavates the stratum to form a tunnel; after the tunnel construction is completed, the propulsion cylinder group 104 is started, and since the telescopic end of the propulsion cylinder group 104 is in contact with the tunnel lining segments 600, the telescopic end of the propulsion cylinder group 104 can push the shield machine 100 to move in the tunnel as it expands and contracts. After the shield machine 100 moves to the section of the tunnel where a continuous wall needs to be added, the continuous wall construction is performed on the bottom of the tunnel by the TRD equipment 200 arranged in the extended shield shell 1012. It can be seen that the tunnel construction equipment provided by the present invention cleverly combines the shield and TRD methods. It can not only independently carry out shield tunnel construction, but also synchronously construct the continuous wall at the bottom of the tunnel. On the one hand, the one-time reinforcement of the tunnel and the continuous wall at the bottom of the tunnel is realized. On the other hand, since a continuous wall is formed at the bottom of the tunnel, the continuous wall plays a certain supporting role on the tunnel, reduces the sinking phenomenon of the lining segments of the formed tunnel section, and improves the tunnel forming quality.

[0042] It should be noted that the present invention does not specifically limit the length, radial width and other dimensions of the extended shield shell 1012 . As long as the dimensions can meet the use requirements, they belong to the protection scope of the present invention.

[0043] In addition, the TRD equipment 200 keeps the cutter head 102 of the shield machine 100 rotating during construction to prevent the cutter head 102 from getting stuck or getting stuck when the cutter head 102 stops rotating and needs to be re-constructed. This causes the cutter head 102 to be stuck and unable to start normally.

[0044] The extended shield shell 1012 provided by the present invention can be connected between the front shield shell 1011 and the middle shield shell 1013 by welding, bolting or socketing. As long as the connection method can meet the use requirements, it belongs to the protection scope of the present invention; optionally, the shield shell 101 provided in the embodiment of the present invention sets the extended shield shell in the middle of the front shield shell 1011 and the middle shield shell 1013, and the extended shield shell 1012 is connected to the front shield shell 1011 and the middle shield shell 1013 by bolts, so that the extended shield shell 1012 can be independently disassembled and assembled, which is convenient for the assembly and later maintenance of the tunnel construction equipment; the tail shield shell 1014 is coaxially welded and fixed to the end of the middle shield shell 1013 away from the extended shield shell 1012, and has good connection strength.

[0045] Furthermore, the extended shield shell 1012 is provided with an installation platform for installing the TRD equipment 200 and an operating platform 1012-d for operation, so that the TRD equipment 200 can be installed on the installation platform. When personnel are required to operate the TRD equipment 200, the personnel operate the TRD equipment 200 on the operating platform 1012-d.

[0046] like Figure 2 As shown, a material bin 1013-c and a personnel cabin 1013-d arranged from top to bottom are arranged in the middle shield shell 1013, and a material transportation system 500 is used to transport the parts in the material bin 1013-c to the preset workstations in the extended shield shell 1012. The material bin 1013-c and the personnel cabin 1013-d are respectively arranged at the center and bottom of the middle shield shell 1013, the personnel cabin 1013-d can be connected to the operating platform 1012-d, the material bin 1013-c is connected to the extended shield shell 1012, and an electric control cabin 1013-e is also arranged on one side of the material bin 1013-c close to the rear shield shell 1014, so that before the TRD equipment 200 digs, the material transportation system 500 can be used. After the driven cutter head 2033 of the chain cutter assembly 203 described below is transported to the installation / disassembly station in the extended shield through the material bin 1013-c, the operator enters the operating platform 1012-d in the extended shield shell 1012 from the personnel cabin 1013-d, and installs the driven cutter head 2033 under the chain cutter driving end 2031 of the chain cutter assembly 203 described below, so that the TRD equipment 200 can carry out subsequent excavation work; after the personnel exit the personnel cabin 1013-d, close the hatch of the electrical control cabin 1013-e and the hatch of the personnel cabin 1013-d, so that a closed space is formed inside the extended shield shell 1012, and pressurizes the extended shield shell 1012 through the pressure maintaining system described below.

[0047] In addition, the bottom of the extended shield shell 1012 is provided with a bottom gate 1012-a, sealing grease 1012-b and a polymer temporary sealing plate 1012-c in sequence from the inside to the outside to achieve sealing of the bottom of the extended shield shell 1012; the tunnel construction equipment also includes an electric control system 400, and the bottom gate 1012-a is electrically connected to the electric control system 400 to control the opening and closing of the bottom gate 1012-a through the electric control system 400, thereby improving the degree of automation of the tunnel construction equipment.

[0048] It should be noted that the above-mentioned electrical control system 400 can, but is not limited to, control the bottom gate 1012-a of the extended shield shell 1012. The electrical control system 400 is divided into several groups of subsystems, including all electrical control components with functions such as control, monitoring and protection required for the normal operation of the tunnel construction equipment. All electrical control components are integrated in the tunnel construction equipment, and each group of electrical control subsystems independently controls the operation of the corresponding modules.

[0049] The TRD equipment 200 provided by the present invention includes a base frame 201, a sliding frame 202, a sliding support, a lifting cylinder, a TRD control host and a chain knife assembly 203, so that the sliding frame 202, the sliding support, the lifting cylinder, the TRD control host and the chain knife assembly 203 can be installed through the base frame 201.

[0050] Specifically, the sliding frame 202 includes a first sliding frame 202 and a second sliding frame 202 which are relatively arranged along the center line of the base frame 201. The first sliding frame 202 and the second sliding frame 202 are hinged to the inner side of the base frame 201, and can swing back and forth around the hinge to fine-tune the position of the sliding frame 202, so that the chain knife assembly 203 connected to the sliding frame 202 can be fine-tuned, so that the driven cutter head 2033 of the chain knife assembly 203 is in the excavation starting position directly above the bottom gate 1012-a of the extended shield shell 1012 before starting excavation; the sliding support is slidably connected to the sliding frame 202, and the chain knife assembly 203 includes a chain knife driving end connected to the sliding support by bolts. 2031, a chain knife box 2032 and a driven knife head 2033, and the number of chain knife boxes 2032 is multiple, the chain knife driving end 2031, multiple chain knife boxes 2032 and a driven knife head 2033 are connected in series from top to bottom to form a whole, and the lifting cylinder is arranged on the sliding frame 202, which is used to drive the chain knife assembly 203 to perform lifting movement through the sliding support, so as to drive the sliding support to slide up and down on the sliding frame through the lifting cylinder, so that the sliding support drives the chain knife driving end 2031 to perform lifting movement, so that the multiple chain knife boxes 2032 and a driven knife head 2033 connected in series with the chain knife driving end 2031 can perform lifting movement, so that the driven knife head 2033 can dig the soil.

[0051] It should be noted that the present invention does not specifically limit the installation position of the above-mentioned TRD control host in the extended shield shell 1012. In actual applications, the TRD control host can be installed separately at a reasonable position of the extended shield shell 1012 for easy maintenance, and electrically connected to each integrated module of the TRD equipment 200 through the corresponding wiring interface.

[0052] In addition, the TRD equipment 200 further comprises a first gripper set 204, a second gripper set 205 and a third gripper set 206 for supporting the base frame 201 on the inner wall of the extended shield shell 1012, so that the TRD equipment 200 is disposed in the shell of the extended shield by three sets of grippers.

[0053] Specifically, the first support shoe group 204, the second support shoe group 205 and the third support shoe group 206 are connected to the base frame 201 through the first tightening cylinder group, the second tightening cylinder group and the third tightening cylinder group, respectively, so that the first support shoe group 204, the second support shoe group 205 and the third support shoe group 206 are all tightly fitted with the inner wall of the extended shield shell 1012 through fine adjustment of the first tightening cylinder group, the second tightening cylinder group and the third tightening cylinder group, so as to achieve the function of supporting the base frame 201; and the first support shoe group 204 and the second support shoe group 205 are both slidably connected to the base frame 201 in the first direction X, and the third support shoe group 206 is slidably connected to the base frame 201 in the second direction Y, and the first direction X and the second direction Y are perpendicular to each other, so that the entire base frame 201 can be moved and adjusted in the first direction X and the second direction Y.

[0054] like Figure 3 In the side structural diagram of the TRD equipment 200 shown, the first direction X is the direction from the front shield shell 1011 to the rear shield shell 1014 in the horizontal plane, and the second direction Y is the direction perpendicular to the first direction X in the horizontal plane. Therefore, the front and rear movement of the TRD equipment 200 can be achieved by the first support shoe group 204 and the second support shoe group 205 being slidably connected to the base frame 201 in the first direction X, and the left and right adjustment of the TRD equipment 200 can be achieved by the third support shoe group 206 being slidably connected to the base frame 201 in the second direction Y.

[0055] In addition, the tunnel construction equipment provided by the present invention also includes a circulation system 300, which includes a first circulation subsystem and a second circulation subsystem. The first circulation subsystem is connected to the air cushion chamber of the shield machine 100 to form a circulation system 300 inside the shield machine 100 to meet the slag slurry transportation needs during shield construction. The second circulation subsystem is used to transport slag slurry and replace mud for the TRD equipment 200. The first circulation subsystem and the second circulation subsystem jointly transport slag slurry and replace mud for the tunnel construction equipment provided by the present invention to ensure the normal operation of the tunnel construction equipment.

[0056] Furthermore, the tunnel construction equipment also includes a pressure maintaining system for adjusting the pressure in the extended shield shell 1012, as well as the pressure in the excavation chamber and the air cushion chamber in the front shield shell 1011, so that the pressure in the extended shield shell 1012 is balanced with the water and soil pressure outside the tunnel construction equipment by adjusting the pressure in the excavation chamber and the air cushion chamber, as well as the pressure in the extended shield shell 1012 through the pressure maintaining system, and when the TRD equipment 200 is under construction, the stability of the mud level flowing into the extended shield shell 1012 is maintained.

[0057] Furthermore, the tunnel construction equipment also includes a freezing circulation system and a thawing circulation system. A frozen solidified layer 700 is set at the bottom of the extended shield shell 1012. The freezing circulation system is used to freeze the frozen solidified layer 700, so that the frozen solidified layer is frozen solidified through the freezing circulation system, and the bottom of the extended shield shell 1012 is well sealed. The thawing circulation system is used to thaw the frozen solidified layer, so that when the TRD equipment 200 needs to continue excavating in the future, the frozen solidified layer 700 can be thawed through the thawing circulation system.

[0058] The middle shield shell 1013 of the tunnel construction equipment provided by the present invention is provided with a mounting bracket 1013-a and an annular reinforcement 1013-b. The number of the propulsion cylinder group 104 is multiple, and the multiple propulsion cylinder groups 104 are evenly arranged along the circumference of the inner part of the middle shield shell 1013. One end of the propulsion cylinder group 104 is connected to the mounting bracket 1013-a in a floating support manner, and the other end is connected to the annular reinforcement 1013-b. The assembling machine 105 is installed on the mounting bracket 1013-a by bolt connection. The bracket 1013-a is located on one side away from the annular reinforcement 1013-b and in the tail shield shell 1014, so as to enhance the strength of the middle shield shell 1013 by installing the bracket 1013-a and the annular reinforcement 1013-b. At the same time, the assembler 105 and the propulsion cylinder group 104 are respectively installed on both sides of the installation bracket 1013-a, and the propulsion direction of the entire tunnel construction equipment jack is fine-tuned through the floating support connection between the propulsion cylinder group 104 and the installation bracket 1013-a.

[0059] In addition, the tunnel construction equipment also includes an auxiliary system, which includes all auxiliary measures and systems such as hydraulic system, electrical system and sealing system required for the normal operation of the tunnel construction equipment, to assist in the normal operation of all functions of the tunnel construction equipment.

[0060] like Figures 4 to 13 As shown, when the tunnel construction equipment is used, when the shield machine 100 excavates to a section where a continuous wall needs to be added, the shield machine 100 and the TRD equipment 200 are started to construct synchronously, which mainly includes the following steps:

[0061] ① After the shield machine 100 advances to the section where a continuous wall needs to be added, the assembler 105 completes the assembly of the entire ring of tunnel lining segments 600, all the thrust cylinder groups 104 push on the tunnel lining segments 600, keep the cutter head 102 rotating, and the pressure maintaining system maintains the pressure in the excavation chamber and the air cushion chamber in real time. The shield machine 100 stops excavating, and the first circulation subsystem is adjusted to the shutdown mode. The electronic control system 400 monitors the seals between the front shield shell 1011 and the extended shield shell 1012, and the bottom gate 1012-a of the extended shield shell 1012 are intact, and the hatch of the electronic control cabin 1013-e at the rear end of the material bin 1013-c is opened to make the extended shield shell 1012 in a normal pressure state.

[0062] ② Turn on the TRD control host of the TRD equipment 200, fine-tune the first tightening cylinder group, the second tightening cylinder group and the third tightening cylinder group, and ensure that the three sets of tightening shoes are tightly fitted against the inner wall of the extended shield shell 1012 again, start the lifting cylinders on both sides of the sliding frame 202, and lift the chain knife driving end 2031 of the chain knife assembly 203 to the set position and stop; at the same time, use the material transportation system to transport the driven knife head 2033 of the chain knife assembly 203 through the material bin 1013-c to the installation / disassembly station in the extended shield; then, the operator enters the extended shield shell 1012 from the personnel cabin 1013-d. 12, install the driven cutter head 2033 under the chain cutter driving end 2031, adjust the position of the base frame 201 of the TRD equipment 200, ensure that the driven cutter head 2033 is in the excavation starting position just above the bottom gate 1012-a of the extended shield shell 1012, and the personnel exit the extended shield shell 1012, close the hatch of the electric control cabin 1013-e and the hatch of the personnel cabin 1013-d, and the pressure maintaining system pressurizes the extended shield shell 1012 to the set value to balance the pressure in the extended shield shell 1012 with the water and soil pressure outside the tunnel construction equipment.

[0063] ③ Open the second circulation subsystem, the chain knife drive end 2031 and the bottom gate 1012-a of the extended shield shell 1012, start the retraction of the lifting cylinders on both sides of the sliding frame 202, drive the chain knife assembly 203 to move slowly downward, and the chain knife assembly 203 continuously cuts downward the polymer temporary sealing plate 1012-c set at the bottom opening of the extended shield shell 1012, and adjusts the pressure of the pressure maintaining system in real time to maintain the stability of the mud level pouring into the extended shield shell 1012 until the chain knife digs deep to the set position and stops, suspends the second circulation subsystem, and starts the refrigeration circulation system to ensure that the frozen solidification layer 700 set at the bottom of the extended shield shell 1012 is solidified and completes a good seal on the bottom of the extended shield shell 1012. At the same time, the pressure maintaining system adjusts the pressure relief to reduce the pressure in the extended shield shell 1012 to the preset value, and then opens the hatch of the electrical control cabin 1013-e to make the extended shield shell 1012 in a normal pressure state.

[0064] ④ The operator enters the operating platform 1012-d in the extended shield shell 1012, separates the connection between the chain knife driving end 2031 and the driven cutter head 2033, starts the lifting cylinder to extend, and lifts the chain knife driving end 2031 to the set position and stops; at the same time, the material transportation system is used to transport the first section of the chain knife box 2032 of the chain knife assembly 203 through the material bin 1013-c to the installation / disassembly station in the extended shield shell 1012, and the operator connects the first section of the chain knife box 2032 with the chain knife driving end 2031 and the driven cutter head 2033 in series. After completing the installation, the operator exits the extended shield shell 1012, closes the hatch of the electric control cabin 1013-e and the hatch of the personnel cabin 1013-d, and the pressure maintaining system pressurizes the extended shield shell 1012 to the set value, so that the pressure in the extended shield shell 1012 is balanced with the water and soil pressure outside the tunnel construction equipment.

[0065] ⑤ Start the thawing circulation system to ensure that the frozen solidified layer 700 is thawed, start the second circulation subsystem, start the retraction of the lifting cylinders on both sides of the sliding frame 202, drive the chain knife assembly 203 to move slowly downward, and adjust the pressure of the pressure maintaining system in real time to maintain the stability of the mud liquid level pouring into the extended shield shell 1012, until the chain knife assembly 203 digs deep to the set position and stops, pause the second circulation subsystem, start the refrigeration circulation system, ensure that the frozen solidified layer 700 set at the bottom of the extended shield shell 1012 is solidified and complete the good sealing of the bottom of the extended shield shell 1012; at the same time, the pressure maintaining system adjusts the pressure relief to make the pressure in the extended shield shell 1012 drop to the preset value, and then open the hatch of the electrical control cabin 1013-e to make the extended shield shell 1012 in a normal pressure state.

[0066] ⑥ Repeat the above steps ④ and ⑤ until the chain cutter assembly 203 digs to the set value (H≥100m). At this time, start the shield machine 100 to start excavation, ensure the synchronous linkage construction of the shield and TRD, and complete the one-time synchronous forming of the shield tunnel and the TRD continuous wall.

[0067] It should be noted that after the TRD equipment 200 completes the construction of the continuous wall section, the chain knife assembly 203 needs to be disassembled, and the disassembly steps are opposite to those when the chain knife assembly 203 is installed.

[0068] In addition, for long-distance excavation, when it is necessary to maintain and replace the shield cutters under normal pressure, the TRD equipment 200 can be suspended, the refrigeration circulation system can be started, the frozen solidified layer 700 at the bottom of the extended shield shell 1012 can be frozen and sealed, and the door of the electric cabin can be opened to ensure that the extended shield shell 1012 is in a normal pressure state. The operator can enter the personnel cabin 1013-d in the front shield shell 1011 and the cutter head 102 at normal pressure to perform operations.

[0069] The terms "first" and "second" and the like in the specification and claims of the present invention and the above drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but may include steps or units that are not listed.

[0070] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tunnel construction equipment, characterized in that: include: A shield machine, comprising a shield shell, a cutterhead, a shield drive system, a propulsion cylinder group and an assembling machine, wherein the shield shell comprises a front shield shell, an extended shield shell, a middle shield shell and a rear shield shell connected in sequence, the cutterhead is arranged at one end of the front shield shell away from the extended shield shell, the shield drive system is arranged at the front shield shell and connected to the cutterhead; the assembling machine is arranged at the rear shield shell and is used to assemble tunnel lining segments; the telescopic end of the propulsion cylinder group can abut against the tunnel lining segments to push the shield machine to move; The TRD equipment is arranged in the extended shield shell and is used for continuous wall construction at the bottom of the tunnel.

2. The tunnel construction equipment according to claim 1, characterized in that: The extended shield shell is located between the front shield shell and the middle shield shell, and the extended shield shell is connected to the front shield shell and the middle shield shell by bolts, and the tail shield shell is coaxially welded and fixed to one end of the middle shield shell away from the extended shield shell.

3. The tunnel construction equipment according to claim 1, characterized in that: The extended shield shell is provided with a mounting platform for mounting the TRD equipment and an operating platform for operation; The middle shield shell is provided with a material bin and a personnel cabin arranged from top to bottom, and a material transportation system for transporting parts in the material bin to preset workstations in the extended shield shell. The personnel cabin can be connected with the operating platform, and the material bin is connected with the extended shield shell. An electric control cabin is also provided on one side of the material bin close to the tail shield shell.

4. The tunnel construction equipment according to claim 1, characterized in that: The bottom of the extended shield shell is provided with a bottom gate, sealing grease and a polymer temporary sealing plate in sequence from the inside to the outside. The tunnel construction equipment also includes an electric control system, and the bottom gate is electrically connected to the electric control system.

5. The tunnel construction equipment according to claim 1, characterized in that: The TRD equipment includes a base frame, a sliding frame, a sliding support, a lifting cylinder, a TRD control host and a chain knife assembly; The sliding frame is hinged to the base frame, the sliding support is slidably connected to the sliding frame, the chain knife assembly includes a chain knife driving end, a chain knife box and a driven knife head connected to the sliding support by bolts, and the number of the chain knife boxes is multiple, the chain knife driving end, the multiple chain knife boxes and a driven knife head are connected in series from top to bottom to form a whole, and the lifting cylinder is arranged on the sliding frame, which is used to drive the chain knife assembly to perform lifting and lowering movements through the sliding support.

6. The tunnel construction equipment according to claim 5, characterized in that: The TRD equipment also includes a first gripper set, a second gripper set and a third gripper set for supporting the base frame on the inner wall of the elongated shield shell; The first support shoe group, the second support shoe group and the third support shoe group are connected to the base frame through the first tightening cylinder group, the second tightening cylinder group and the third tightening cylinder group respectively, and the first support shoe group and the second support shoe group are both slidably connected to the base frame in a first direction, and the third support shoe group is slidably connected to the base frame in a second direction, and the first direction and the second direction are perpendicular to each other.

7. The tunnel construction equipment according to claim 1, characterized in that: It also includes a circulation system, which includes a first circulation subsystem and a second circulation subsystem. The first circulation subsystem is connected to the air cushion chamber of the shield machine, and the second circulation subsystem is used for slag slurry transportation and mud replacement of the TRD equipment.

8. The tunnel construction equipment according to claim 1, characterized in that: It also includes a pressure maintaining system for adjusting the pressure in the extended shield shell, as well as the pressure in the excavation chamber and the air cushion cabin in the front shield shell.

9. The tunnel construction equipment according to claim 1, characterized in that: It also includes a freezing circulation system and a thawing circulation system. A freezing solidification layer is set at the bottom of the extended shield shell. The freezing circulation system is used to freeze and solidify the freezing solidification layer, and the thawing circulation system is used to thaw the freezing solidification layer.

10. The tunnel construction equipment according to claim 1, characterized in that: A mounting bracket and an annular reinforcement are arranged in the middle shield shell. There are multiple propulsion cylinder groups, which are evenly arranged along the circumference of the interior of the middle shield shell. One end of the propulsion cylinder group is connected to the mounting bracket by a floating support, and the other end is connected to the annular reinforcement. The assembling machine is installed on the side of the mounting bracket away from the annular reinforcement by bolt connection and is located in the tail shield shell.

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