Earth pressure balance type shield long-distance lake penetrating construction equipment and method

Abstract

The invention relates to the technical field of lake penetrating construction, and provides earth pressure balance type shield long-distance lake penetrating construction equipment and method.The earth pressure balance type shield long-distance lake penetrating construction equipment comprises a trolley, a slurry spray head, a material barrel fixed to the trolley and a slurry pump used for pumping the material barrel to the slurry spray head; a first stirring assembly which is driven by a first motor to stir slurry at the upper part in the material barrel and a second stirring assembly which is matched with the first stirring assembly to stir slurry at the lower part in the material barrel are arranged in the material barrel; the movable rail is driven by the second stirring assembly to move on the fixed rail in a reciprocating mode, the movable rail drives the swing arm to swing on the supporting frame in a centering and reciprocating mode, then the slurry spraying range of the slurry spraying head can cover the arch wall of a tunnel, and spraying uniformity is guaranteed. A single-pump feeding and single-head spraying mode is adopted, and the problem that in the prior art, due to single-pump feeding and spraying of a plurality of spraying heads, pressure is insufficient is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of lake-crossing construction, and in particular to an earth pressure balance shield long-distance lake-crossing construction device and method. Background Art

[0002] The shield machine is used to construct long distances through the lake. The sand layer of the excavation section is widely distributed. The lake bottom tunnel is shallowly buried. Affected by factors such as settlement or uplift sensitivity, the shield construction is risky and lasts for a long time. The patented technology with announcement number CN104989412A provides a long-distance lake crossing construction technology for earth pressure balance shield. It mainly selects the cutterhead reasonably according to the lithological characteristics of the stratum in this section, strictly controls the excavation speed, and correctly grasps the grouting materials, grouting time, grouting pressure, grouting range and grouting method to ensure that the larger gaps are reinforced and filled in time, avoiding excessive lake bottom settlement, and preventing accidents such as gushing or large-scale landslides from affecting engineering safety and environmental safety.

[0003] However, after the long-distance lake crossing of the earth pressure balance shield, shotcrete must be carried out. The main reasons are as follows:

[0004] 1. Waterproof and anti-seepage

[0005] 1. Construction through the lake may cause a certain degree of damage to the natural impermeable layer at the bottom of the lake. Shotcrete can form a uniform impermeable coating in the construction area, effectively preventing lake water from penetrating into the construction structure and avoiding affecting the stability and safety of the project.

[0006] 2. Shotcrete materials usually have good anti-seepage properties and can fill the tiny cracks and pores generated during the construction process, further improving the waterproofing effect and ensuring the long-term and stable operation of the project.

[0007] 2. Structural reinforcement

[0008] 1. The structure after lake crossing construction may be affected by factors such as lake water pressure, water flow scouring and changes in geological conditions. Shotcrete can provide an additional protective layer for the surface of the structure, enhance the integrity and strength of the structure, and improve its ability to resist external forces.

[0009] 2. The shotcrete material can be closely integrated with the original structure to form a composite structure, jointly bearing the external load, thereby extending the service life of the project.

[0010] 3. Prevent corrosion

[0011] 1. Lake water may contain various corrosive substances, such as salt, microorganisms, etc. Spraying can form an isolation layer on the surface of the structure to prevent corrosive substances from directly contacting the structure and reduce the occurrence of corrosion.

[0012] 2. For metal structural parts, spraying can also play the role of cathodic protection, further slowing down the corrosion rate.

[0013] IV. Ecological Protection

[0014] 1. Appropriate shotcrete materials can reduce the impact on the lake's ecological environment. For example, the use of environmentally friendly shotcrete materials can prevent the release of harmful substances into the lake and protect the living environment of aquatic organisms.

[0015] 2. The surface after spraying is relatively smooth, which reduces the resistance to water flow and reduces the interference with lake water flow and ecosystem.

[0016] After searching, it was found that the existing patent technology announcement number CN214635760U provides a shield tunnel grouting equipment, including a water tank, a support platform and a stirring tank, a stirring tank is installed at the middle position of the top of the support platform, a rotating shaft is installed at the middle position of the inside of the stirring tank through a bearing, a stirring motor is installed at the top of the rotating shaft located at the upper end of the stirring tank, and stirring rods are installed at both sides of the outer surface of the rotating shaft through connecting rods. The grouting equipment is provided with a stirring motor, and the stirring motor can drive the rotating shaft to rotate, thereby driving the stirring rod and the stirring shaft to rotate, so as to evenly mix the mud raw materials.

[0017] However, the shield tunnel grouting equipment still has the following problems: the shield tunnel grouting equipment in the existing patent adopts a single pump feeding and multiple nozzles to spray. Since the multiple nozzle delivery pipelines share the pressure of the single pump feeding pipe, the pressure during spraying is relatively small, especially when spraying on the arch, the pressure of the nozzle is not enough, which can easily cause leakage and failure to apply. Summary of the invention

[0018] The present invention provides an earth pressure balance shield long-distance lake crossing construction equipment and method, which solves the problem of insufficient pressure caused by a single pump feeding multiple nozzles spraying in the prior art.

[0019] The technical solution of the present invention is as follows: a kind of earth pressure balance shield long-distance lake crossing construction equipment, including a trolley, a mud spray head, a barrel fixed on the trolley, and a mud pump for pumping the barrel to the mud spray head, a first motor is fixed to the bottom of the trolley, a first stirring component is arranged in the barrel for stirring the upper part of the slurry in the barrel under the drive of the first motor, and a second stirring component is arranged in the barrel for stirring the lower part of the slurry in the barrel under the cooperation with the first stirring component, a cover plate is fixed on the top of the barrel, which can rotate when the second stirring component is driven to rotate circumferentially around the first stirring component in cooperation with the second stirring component, a fixed rail is fixed on the top of the cover plate, a movable rail is arranged at the bottom of the fixed rail for reciprocating along the length direction of the fixed rail under the drive of the second stirring component, a support frame is fixed on the top of the fixed rail, a swing arm is arranged on the support frame for driving the mud spray head to swing back and forth under the drive of the movable rail to adjust the spraying position, and a driving component for adjusting the spraying height of the mud spray head is arranged on the swing arm.

[0020] Preferably, the first stirring assembly includes a first shaft rod, the lower end of which passes through the barrel and the trolley and is fixed to the output end of the first motor, and the part of the first shaft rod located in the barrel is fixed with an upper fixed plate and a lower fixed plate, and a plurality of first stirring rods fixed on the first shaft rod are arranged between the upper fixed plate and the lower fixed plate.

[0021] Preferably, the second stirring assembly includes a second shaft rod, which is rotatably connected to the upper fixed plate and the lower fixed plate, the bottom of the first shaft rod passes through the lower fixed plate and is fixed with a plurality of second stirring rods, the top of the second shaft rod passes through the upper fixed plate and is fixed with a gear, and the top end of the second shaft rod is rotatably connected to the first straight slider.

[0022] Preferably, a through hole is formed on the cover plate, an annular tooth is provided in the through hole, and the gear is meshed with the annular tooth.

[0023] Preferably, the movable rail includes a first rail frame, the first rail frame is perpendicular to the direction of the fixed rail, the first straight slider is limited in the first rail frame, a second straight slider is fixed in the middle of the top surface of the first rail frame, the second straight slider is limited in the fixed rail, and a rack consistent with the length direction of the fixed rail is fixed on the top surface of the second straight slider.

[0024] Preferably, the support frame includes a second rail frame, which is semicircular and vertically arranged, a crossbeam arranged parallel to the fixed rail is fixed to the bottom of the second rail frame, and a hinge seat is fixed to the middle position of the crossbeam.

[0025] Preferably, the swing arm includes a vertical plate, which is hinged on a hinge seat, a fan-shaped tooth is fixed to the bottom of the vertical plate, the fan-shaped tooth is meshed with a rack, an arc-shaped slider is fixed to the top of the vertical plate, the sliding limit of the arc-shaped slider is located in the second rail frame, and a strip groove is opened on the vertical plate.

[0026] Preferably, the driving assembly includes a second motor, which is fixed at the bottom of the strip groove, and a threaded rod is fixed to the output end of the second motor, and the threaded rod is rotatably connected to the arc-shaped slider, and the outer side of the threaded rod is threadedly connected to a third straight slider, and the third straight slider is limited in sliding movement within the strip groove, and the mud nozzle is fixed on the third straight slider.

[0027] Preferably, the cross beam is provided with a movable groove for the vertical plate to swing freely.

[0028] According to the above construction equipment, the present invention also proposes a long-distance lake-crossing construction method of an earth pressure balance shield, comprising the following steps:

[0029] Step 1: Mix the slurry prepared by the mud and water in a required proportion into a material barrel;

[0030] Step 2: Move the trolley in the excavation direction of the shield tunnel through the lake;

[0031] Step 3: The first stirring component is driven by the first motor to stir the slurry in the upper part of the barrel, and the second stirring component is driven by the first stirring component to rotate around the first stirring component and cooperate with the cover plate to drive the second stirring component to rotate to stir the slurry in the lower part of the barrel;

[0032] Step 4: According to the arch width of the tunnel, the spraying height of the mud nozzle is adjusted by operating the driving assembly on the swing arm;

[0033] Step five, the mixed slurry in the barrel is pumped into the mud nozzle through the mud pump, and sprayed out from the mud nozzle. At the same time, the movable rail is driven by the second stirring component to reciprocate on the fixed rail, and the swing arm is driven by the movable rail to swing back and forth on the support frame in a centered manner, so that the spraying range of the mud nozzle can cover the arch wall of the tunnel and ensure the uniformity of the spraying.

[0034] The beneficial effects of the present invention are:

[0035] 1. The present invention drives the first stirring component by the operation of the first motor, and the first stirring component stirs the slurry in the upper part of the barrel, and the first stirring component drives the second stirring component to rotate around the first stirring component and cooperates with the cover plate to drive the second stirring component to rotate to stir the slurry in the lower part of the barrel. Compared with the prior art, the present invention adopts two stirring systems to cooperate with each other to stir, thereby improving the stirring efficiency;

[0036] 2. The present invention uses a mud pump to pump the mixed slurry in the barrel into the mud nozzle, which sprays the slurry out. At the same time, the movable rail is driven by the second stirring component to reciprocate on the fixed rail, and the movable rail drives the swing arm to swing back and forth on the support frame in a centered manner, so that the spraying range of the mud nozzle can cover the arch wall of the tunnel and ensure the uniformity of the spraying. Compared with the prior art, the present invention adopts a single-pump feeding and single-head spraying method, which solves the problem of insufficient pressure caused by single-pump feeding and multiple nozzles spraying in the prior art;

[0037] 3. The present invention can adjust the grouting height of the slurry nozzle according to the arch width of the tunnel by operating the driving assembly on the swing arm. Compared with the prior art, the present invention can be applied to the spraying operation of tunnels of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] Figure 1 This is a schematic diagram of the structure of an earth pressure balance shield long-distance lake crossing construction equipment proposed by the present invention;

[0040] Figure 2 This is a schematic diagram of the front view structure of an earth pressure balance shield long-distance lake-crossing construction equipment proposed by the present invention;

[0041] Figure 3 This is a schematic diagram of the structure of the cover plate and various components proposed by the present invention;

[0042] Figure 4 This is a schematic diagram of the cover plate and support frame structure proposed by the present invention;

[0043] Figure 5 This is a schematic diagram of the structure of the first stirring assembly proposed by the present invention;

[0044] Figure 6 This is a schematic diagram of the structure of the second stirring assembly proposed by the present invention;

[0045] Figure 7 This is a schematic diagram of the structure of the mobile rail proposed by the present invention;

[0046] Figure 8 This is a schematic diagram of the swing arm and mud nozzle structure proposed by the present invention;

[0047] In the figure: 1, trolley; 2, barrel; 3, mud pump; 4, mud nozzle; 5, first motor; 6, cover plate; 61, through hole; 62, annular gear; 7, first stirring assembly; 71, first shaft rod; 72, upper fixed plate; 73, lower fixed plate; 74, first stirring rod; 8, second stirring assembly; 81, second shaft rod; 82, second stirring rod; 83, gear; 84, first straight slider; 9, fixed rail; 10, movable rail; 101, first rail frame; 102, second straight slider; 103, rack; 11, support frame; 111, second rail frame; 112, crossbeam; 113, hinge seat; 12, swing arm; 121, vertical plate; 122, fan-shaped teeth; 123, arc slider; 124, strip groove; 13, drive assembly; 131, second motor; 132, threaded rod; 133, third straight slider. DETAILED DESCRIPTION

[0048] The following will be combined with 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.

[0049] See also Figure 1 , Figure 2 and Figure 3 The present invention provides a technical solution: an earth pressure balance shield long-distance lake crossing construction equipment, comprising a trolley 1, a mud nozzle 4, a material barrel 2 fixed on the trolley 1, and a mud pump 3 for pumping the material barrel 2 to the mud nozzle 4. A first motor 5 is fixed at the bottom of the trolley 1, and a first stirring component 7 is provided in the material barrel 2 to stir the upper part of the slurry in the material barrel 2 under the drive of the first motor 5, and a second stirring component 8 is provided in the material barrel 2 to stir the lower part of the slurry in the material barrel 2 in cooperation with the first stirring component 7. A second stirring component 8 is fixed at the top of the material barrel 2 to stir the lower part of the slurry in cooperation with the second stirring component 8. The component 8 cooperates with the cover plate 6 that can rotate when the second stirring component 8 rotates circumferentially around the first stirring component 7. A fixed rail 9 is fixed on the top of the cover plate 6. A movable rail 10 is provided at the bottom of the fixed rail 9 and reciprocates along the length direction of the fixed rail 9 under the drive of the second stirring component 8. A support frame 11 is fixed on the top of the fixed rail 9. A swing arm 12 is provided on the support frame 11 and drives the mud nozzle 4 to swing back and forth to adjust the spraying position under the drive of the movable rail 10. A driving component 13 for adjusting the spraying height of the mud nozzle 4 is provided on the swing arm 12.

[0050] See also Figure 3 and Figure 5The first stirring assembly 7 includes a first shaft rod 71, the lower end of the first shaft rod 71 passes through the barrel 2 and the trolley 1 and is fixed to the output end of the first motor 5. The first shaft rod 71 is located in the barrel 2 and is fixed with an upper fixed plate 72 and a lower fixed plate 73. A plurality of first stirring rods 74 fixed on the first shaft rod 71 are arranged between the upper fixed plate 72 and the lower fixed plate 73. The first motor 5 drives the first shaft rod 71 to rotate, and the first stirring rod 74 on the first shaft rod 71 stirs the upper part of the slurry inside the barrel 2.

[0051] See also Figure 3 and Figure 6 The second stirring assembly 8 includes a second shaft rod 81, which is rotatably connected to the upper fixed plate 72 and the lower fixed plate 73. The bottom of the first shaft rod 71 passes through the lower fixed plate 73 and is fixed with a plurality of second stirring rods 82. The top of the second shaft rod 81 passes through the upper fixed plate 72 and is fixed with a gear 83. The top of the second shaft rod 81 is rotatably connected with a first straight slider 84. A through hole 61 is provided on the cover plate 6. An annular tooth 62 is provided in the through hole 61. The gear 83 is meshed with the annular tooth 62. When the first shaft rod 71 rotates, the second shaft rod 81 can be pushed to rotate circumferentially around the first shaft rod 71 through the upper fixed plate 72 and the lower fixed plate 73. In this process, the meshing of the gear 83 and the annular tooth 62 can drive the second shaft rod 81 to rotate, and then the second stirring rod 82 on the second shaft rod 81 rotates to stir the slurry in the lower part of the barrel 2.

[0052] See also Figure 3 , Figure 4 and Figure 7 The movable rail 10 includes a first rail frame 101, the first rail frame 101 is perpendicular to the direction of the fixed rail 9, the first straight slider 84 is limited in the sliding movement of the first rail frame 101, a second straight slider 102 is fixed in the middle position of the top surface of the first rail frame 101, the second straight slider 102 is limited in the sliding movement of the fixed rail 9, and a rack 103 consistent with the length direction of the fixed rail 9 is fixed on the top surface of the second straight slider 102. The support frame 11 includes a second rail frame 111, the second rail frame 111 is semicircular and vertically arranged, a crossbeam 112 arranged parallel to the fixed rail 9 is fixed at the bottom of the second rail frame 111, and a hinge seat 113 is fixed in the middle position of the crossbeam 112. When the second shaft rod 81 rotates circumferentially around the first shaft rod 71, it can slide in the first rail frame 101 through the first straight slider 84. At the same time, under the sliding limit of the fixed rail 9 on the second straight slider 102, the first rail frame 101 can be driven to reciprocate along the length direction of the fixed rail 9.

[0053] See also Figure 3 and Figure 8The swing arm 12 includes a vertical plate 121, which is hinged on the hinge seat 113. A fan-shaped tooth 122 is fixed to the bottom of the vertical plate 121, and the fan-shaped tooth 122 is meshed with the rack 103. An arc-shaped slider 123 is fixed to the top of the vertical plate 121. The arc-shaped slider 123 is limited in the sliding position in the second rail frame 111. A strip groove 124 is opened on the vertical plate 121. When the first rail frame 101 reciprocates, the rack 103 and the fan-shaped tooth 122 are meshed, driving the vertical plate 121 to swing back and forth on the hinge seat 113, and then the arc-shaped slider 123 slides on the second rail frame 111, driving the mud nozzle 4 to continuously adjust the spraying position.

[0054] See also Figure 3 and Figure 8 The driving assembly 13 includes a second motor 131, which is fixed to the bottom of the strip groove 124. A threaded rod 132 is fixed to the output end of the second motor 131. The threaded rod 132 is rotatably connected to the arc-shaped slider 123. The outer side of the threaded rod 132 is threadedly connected to a third straight slider 133. The third straight slider 133 is limited in sliding in the strip groove 124. The mud nozzle 4 is fixed on the third straight slider 133. The threaded rod 132 can be driven to rotate by the second motor 131. The threaded rod 132 cooperates with the third straight slider 133, and the third straight slider 133 is limited in sliding by the strip groove 124. The spraying height of the mud nozzle 4 can be adjusted, so that it is suitable for spraying operations with different arch widths.

[0055] It should be noted that a movable groove (not marked in the figure) is provided on the cross beam 112 for the vertical plate 121 to swing freely.

[0056] Based on the above embodiments, the present invention further proposes a method for constructing an earth pressure balance shield machine through a lake over a long distance, comprising the following steps:

[0057] Step 1, mixing the slurry prepared by the mud and water into the material barrel 2 according to the required proportion;

[0058] Step 2: Move the trolley 1 in the excavation direction of the shield tunnel through the lake;

[0059] Step 3: The first stirring component 7 is driven by the first motor 5 to stir the slurry in the upper part of the barrel 2, and the second stirring component 8 is driven by the first stirring component 7 to rotate around the first stirring component 7 and cooperate with the cover plate 6 to drive the second stirring component 8 to rotate to stir the slurry in the lower part of the barrel 2;

[0060] Step 4, according to the arch width of the tunnel, the driving assembly 13 on the swing arm 12 is operated to adjust the spraying height of the mud nozzle 4;

[0061] Step five, the mixed slurry in the barrel 2 is pumped into the mud nozzle 4 through the mud pump 3, and sprayed out by the mud nozzle 4. At the same time, the movable rail 10 is driven by the second stirring component 8 to reciprocate on the fixed rail 9, and the movable rail 10 drives the swing arm 12 to swing back and forth on the support frame 11 in a centered manner, so that the spraying range of the mud nozzle 4 can cover the arch wall of the tunnel and ensure the uniformity of the spraying.

[0062] The working principle and use process of the present invention are as follows: the first motor 5 drives the first shaft 71 to rotate, and the first stirring rod 74 on the first shaft 71 stirs the upper part of the slurry inside the barrel 2. When the first shaft 71 rotates, the upper fixed plate 72 and the lower fixed plate 73 can push the second shaft 81 to rotate circumferentially around the first shaft 71. In this process, the engagement of the gear 83 and the annular gear 62 can drive the second shaft 81 to rotate, and then the second stirring rod 82 on the second shaft 81 rotates to stir the slurry in the lower part of the barrel 2. When the second shaft 81 rotates circumferentially around the first shaft 71, the first straight slider 84 can slide in the first rail frame 101, and at the same time, the fixed rail 9 can drive the first rail frame 101 to slide the second straight slider 102. The frame 101 reciprocates along the length direction of the fixed rail 9, and when the first rail frame 101 reciprocates, the rack 103 is meshed with the fan-shaped teeth 122, driving the vertical plate 121 to swing back and forth on the hinge seat 113, and then the arc-shaped slider 123 slides on the second rail frame 111, driving the mud nozzle 4 to continuously adjust the spraying position, and adopts a single-pump feeding and single-head spraying method, which solves the problem of insufficient pressure caused by single-pump feeding and multiple nozzle spraying in the prior art. During the spraying process, the second motor 131 can drive the threaded rod 132 to rotate, and the threaded rod 132 cooperates with the thread of the third straight slider 133, and the sliding limit of the third straight slider 133 by the strip groove 124, so that the spraying height of the mud nozzle 4 can be adjusted, which is suitable for spraying operations with different arch widths.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An earth pressure balance shield long-distance lake crossing construction equipment, comprising a trolley (1), a mud nozzle (4), a material barrel (2) fixed on the trolley (1), and a mud pump (3) for pumping the material barrel (2) to the mud nozzle (4), characterized in that: A first motor (5) is fixed at the bottom of the trolley (1), a first stirring component (7) is provided in the barrel (2) for stirring the upper part of the slurry in the barrel (2) under the drive of the first motor (5), and a second stirring component (8) is provided for stirring the lower part of the slurry in the barrel (2) in cooperation with the first stirring component (7), and a cover plate (6) is fixed at the top of the barrel (2) for driving the second stirring component (8) to rotate around the first stirring component (7) in cooperation with the second stirring component (8), and the cover plate (6) is provided for rotating on its own when the second stirring component (8) rotates circumferentially around the first stirring component (7). A fixed rail (9) is fixed on the top of the plate (6); a movable rail (10) is arranged at the bottom of the fixed rail (9) and reciprocates along the length direction of the fixed rail (9) under the drive of the second stirring component (8); a support frame (11) is fixed on the top of the fixed rail (9); a swing arm (12) is arranged on the support frame (11) and drives the mud nozzle (4) to swing back and forth under the drive of the movable rail (10) to adjust the spraying position; and a driving component (13) for adjusting the spraying height of the mud nozzle (4) is arranged on the swing arm (12).

2. The earth pressure balance shield long distance lake crossing construction equipment according to claim 1 is characterized in that: The first stirring assembly (7) comprises a first shaft (71), the lower end of which passes through the barrel (2) and the trolley (1) and is fixed to the output end of the first motor (5); an upper fixed plate (72) and a lower fixed plate (73) are fixed to the portion of the first shaft (71) located in the barrel (2); a plurality of first stirring rods (74) fixed to the first shaft (71) are arranged between the upper fixed plate (72) and the lower fixed plate (73).

3. The earth pressure balance shield long distance lake crossing construction equipment according to claim 2 is characterized in that: The second stirring assembly (8) comprises a second shaft (81), which is rotatably connected to the upper fixed plate (72) and the lower fixed plate (73); the bottom of the first shaft (71) passes through the lower fixed plate (73) and is fixed with a plurality of second stirring rods (82); the top of the second shaft (81) passes through the upper fixed plate (72) and is fixed with a gear (83); the top of the second shaft (81) is rotatably connected with a first straight slider (84).

4. The earth pressure balance shield long distance lake crossing construction equipment according to claim 3 is characterized in that: The cover plate (6) is provided with a through hole (61), an annular tooth (62) is provided in the through hole (61), and the gear (83) is meshed with the annular tooth (62).

5. The earth pressure balance shield long distance lake crossing construction equipment according to claim 3 is characterized in that: The movable rail (10) comprises a first rail frame (101), the first rail frame (101) is perpendicular to the direction of the fixed rail (9), the first straight slider (84) is slidably limited in the first rail frame (101), a second straight slider (102) is fixed at the middle position of the top surface of the first rail frame (101), the second straight slider (102) is slidably limited in the fixed rail (9), and a rack (103) which is consistent with the length direction of the fixed rail (9) is fixed on the top surface of the second straight slider (102).

6. The earth pressure balance shield long distance lake crossing construction equipment according to claim 5, characterized in that: The support frame (11) comprises a second rail frame (111), the second rail frame (111) is semicircular and vertically arranged, a crossbeam (112) arranged parallel to the fixed rail (9) is fixed at the bottom of the second rail frame (111), and a hinge seat (113) is fixed at the middle position of the crossbeam (112).

7. The earth pressure balance shield long distance lake crossing construction equipment according to claim 6 is characterized in that: The swing arm (12) comprises a vertical plate (121), the vertical plate (121) is hinged on a hinge seat (113), a fan-shaped tooth (122) is fixed at the bottom of the vertical plate (121), the fan-shaped tooth (122) is meshed with a rack (103), an arc-shaped slider (123) is fixed at the top of the vertical plate (121), the arc-shaped slider (123) is slidably limited in the second rail frame (111), and a strip groove (124) is opened on the vertical plate (121).

8. The earth pressure balance shield long distance lake crossing construction equipment according to claim 7 is characterized in that: The driving assembly (13) comprises a second motor (131), the second motor (131) is fixed to the bottom of the strip groove (124), a threaded rod (132) is fixed to the output end of the second motor (131), the threaded rod (132) is rotatably connected to the arc-shaped slider (123), the outer side of the threaded rod (132) is threadedly connected to a third straight slider (133), the third straight slider (133) is slidably limited in the strip groove (124), and the mud nozzle (4) is fixed on the third straight slider (133).

9. The earth pressure balance shield long distance lake crossing construction equipment according to claim 7, characterized in that: The cross beam (112) is provided with a movable groove for the vertical plate (121) to swing freely.

10. A method for long-distance lake-crossing construction using an earth pressure balance shield, according to the earth pressure balance shield long-distance lake-crossing construction equipment described in claim 1, characterized in that: The following steps are involved: Step 1, mixing the slurry prepared from the mud and water in a desired proportion into a material barrel (2); Step 2, moving the trolley (1) in the excavation direction of the shield tunnel through the lake; Step three, the first stirring component (7) is driven by the first motor (5), and the first stirring component (7) stirs the slurry in the upper part of the barrel (2), and the second stirring component (8) is driven by the first stirring component (7) to rotate around the first stirring component (7) and cooperate with the cover plate (6) to drive the second stirring component (8) to rotate to stir the slurry in the lower part of the barrel (2); Step 4, according to the arch width of the tunnel, the driving assembly (13) on the swing arm (12) is operated to adjust the spraying height of the mud nozzle (4); Step 5: The slurry mixed in the material barrel (2) is pumped into the slurry nozzle (4) by the mud pump (3), and the slurry is sprayed out by the mud nozzle (4). At the same time, the movable rail (10) is driven by the second stirring component (8) to reciprocate on the fixed rail (9), and the movable rail (10) drives the swing arm (12) to swing back and forth on the support frame (11) in a centered manner, so that the spraying range of the mud nozzle (4) can cover the arch wall of the tunnel and ensure the uniformity of the spraying.

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