Rectangular pipe jacking system for complex geology

Abstract

The utility model provides a rectangular pipe jacking system for complex geology. The rectangular pipe jacking system comprises a pipe jacking machine, a pipe joint, jacking iron, a jack, a jack fixing support, a supporting steel box, a starting supporting wall, a cushion layer, a supporting bottom plate, a starting guide rail and a starting bracket. A cushion layer and a supporting bottom plate are sequentially arranged on the lower portion of a starting foundation pit in a driving mode, a starting supporting wall is arranged at the rear end of the supporting bottom plate, a rear cross beam is arranged on the lower portion of the starting supporting wall, a supporting reaction wall is arranged on one side of the starting supporting wall, the starting supporting wall is connected with a top cross beam and a supporting rib wall, and a jack fixing support is arranged at the front end of the supporting reaction wall. A jack fixing support is arranged on the pipe joint, a plurality of jacks are arranged in the jack fixing support, jacking iron is jacked through the jacks so that the jacking iron and the pipe joint can support the pipe jacking machine entering the lining wall, and a starting guide rail and a starting bracket are sequentially arranged on the lower portion of the pipe jacking machine.

Description

Technical Field

[0001] The utility model relates to the field of civil engineering, in particular to a complex geological rectangular jacking pipe system. Background Art

[0002] Pipe jacking is often used in the development and construction of urban underground space. It is a pipeline laying construction technology that does not involve surface excavation or less surface excavation. It has many advantages, such as little impact on the surrounding environment, no need to relocate a large number of pipelines, no obstruction to traffic, short construction period, high construction safety, and low overall cost. However, due to the influence of various factors such as complex and diverse natural environmental conditions and the spatial environmental conditions of the distribution of existing facilities on the ground and underground, traditional pipe jacking has been difficult to meet the construction requirements of large sections and long distances in modern engineering construction.

[0003] Conventional pipe jacking construction has problems such as poor safety in complex geological conditions, low efficiency in pipe segment assembly and boulder breaking. Utility Model Content

[0004] The utility model aims to provide a complex geological rectangular jacking pipe system that solves the above technical problems.

[0005] In order to solve the above technical problems, the utility model provides a complex geological rectangular jacking system, including a jacking machine, a pipe section, a jacking iron, a jack, a jack fixing bracket, a supporting steel box, an initial supporting wall, a cushion layer, a supporting bottom plate, an initial guide rail, and an initial bracket; a cushion layer and a supporting bottom plate are sequentially laid at the lower part of the initial foundation pit, an initial supporting wall is arranged at the rear end of the supporting bottom plate, a rear cross beam is arranged at the lower part of the initial supporting wall, a supporting reaction wall is arranged on one side of the initial supporting wall, a top cross beam and a supporting rib wall are connected to the initial supporting wall, a jack fixing bracket is arranged at the front end of the supporting reaction wall, and a plurality of jacks are arranged in the jack fixing bracket, and the jacking iron is supported by the plurality of jacks, so that the jacking iron and the pipe section support the jacking machine entering the inner lining wall, and an initial guide rail and an initial bracket are sequentially arranged at the lower part of the jacking machine.

[0006] Furthermore, a number of PVC+steel pipe combination reinforcement holes are arranged on the outside of the starting pipe segment of the pipe jacking machine, recyclable steel pipes are arranged on the outside of the PVC+steel pipe combination reinforcement holes, perforated PVC pipes and grouting pipes are arranged on the inside of the PVC+steel pipe combination reinforcement holes, the grouting pipes are passed from the outside of the recyclable steel pipe to the perforated PVC pipe, and a PVC pipe cover plate and a steel pressure plate are arranged on the outside of the perforated PVC pipe.

[0007] Furthermore, the pipe jacking machine is provided with a new cutter disc and a new high-pressure cleaning hole under the original cutter disc.

[0008] Furthermore, an anti-collapse shell is arranged at the front of the segment machine, an upper blade angle is arranged at the front of the anti-collapse shell, and an upper adjustment jack, a middle adjustment jack and a lower adjustment jack are arranged at the rear of the anti-collapse shell to be connected with the pipe jacking machine.

[0009] Furthermore, it also includes a pipe segment assembly bracket, which is used to assemble the separated upper pipe segment and the separated lower pipe segment to form a pipe segment. The pipe segment assembly bracket includes a channel steel rail, a lower cross beam, a middle cross beam and an upper cross beam, wherein the lower cross beam, the middle cross beam and the upper cross beam are spliced ​​through vertical columns to form a frame, and rollers are rotatably installed at the bottom of the frame, and the rollers are placed in the channel steel rail.

[0010] Furthermore, a lateral adjustment jack and a horizontal jack are arranged on the upper part of the segment assembly bracket, and a diffusion steel plate and a rubber plate are arranged on the top of the lateral adjustment jack and the horizontal jack, and the separated upper segment and the separated lower segment are anchored by connecting grooves.

[0011] Furthermore, a movable counterweight bracket is arranged inside the pipe segment, and a plurality of counterweight blocks are arranged on the upper part of the movable counterweight bracket. The movable counterweight bracket includes a main beam for carrying the counterweight blocks, and traveling wheels installed on the lower part of the main beam through rotation of the main shaft. A channel steel track is laid on the bottom inner side of the pipe segment, and the traveling wheels are placed in the channel steel track, and a limit block is arranged on the inner side of the channel steel track so that the traveling wheels are limited by the limit block.

[0012] The beneficial effects of the utility model are:

[0013] (1) Use the initial support wall, PVC + steel pipe combined reinforcement technology and anti-collapse shell technology for safety protection to improve the safety of pipe jacking construction;

[0014] (2) Adopting mobile support efficient counterweight drag reduction technology, cutterhead blind area modification and intelligent excavation port closing technology, and isolated rock support fixed efficient removal technology to improve pipe jacking construction efficiency;

[0015] (3) The segments are assembled using the temporary installation bracket technology of upper and lower separated segment internal supports to improve the efficiency of segment assembly construction;

[0016] (4) An adjustable steel pressure plate is used to perform water-stopping treatment on the rubber curtain at the exit of the tunnel, thereby improving the safety of the pipe jacking machine's exit construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of rectangular pipe jacking construction in complex geology;

[0018] Figure 2 This is the reinforcement structure diagram of the starting end of the pipe jacking construction;

[0019] Figure 3 This is the PVC+steel pipe combined reinforcement structure diagram;

[0020] Figure 4 This is the cutterhead modification structure diagram;

[0021] Figure 5 It is the structural diagram of the anti-collapse shell;

[0022] Figure 6 This is the structural diagram of the segment assembly bracket;

[0023] Figure 7 This is the installation structure diagram of the mobile counterweight bracket;

[0024] Figure 8 It is a structural diagram of a mobile counterweight support;

[0025] Fig. 9 It is a cross-sectional structural diagram of a mobile counterweight support;

[0026] Fig.10 It is a structural diagram of the rock-breaking support;

[0027] Fig.11 It is a cross-sectional structural diagram of the rock-breaking support;

[0028] Fig.12 This is the structural diagram of the pipe jacking machine exiting the hole;

[0029] Fig.13 It is the structural diagram of the adjustable steel pressure plate.

[0030] In the figure: 1, pipe jacking machine; 2, lining wall; 3, starting bracket; 4, starting guide rail; 5, jack fixing bracket; 6, support reaction wall; 7, support bottom plate; 8, cushion layer; 9, rear crossbeam; 10, starting support wall; 11, support rib wall; 12, top crossbeam; 13, support steel box; 14, jack; 15, top iron; 16, pipe segment; 17, PVC+steel pipe combination reinforcement hole; 18, punched PVC pipe; 19, recyclable steel pipe; 20, steel pressure plate; 21, PVC pipe cover; 22, grouting pipe; 23, overflow hole; 24, original cutter head; 25, newly added cutter head; 26, newly added high-pressure cleaning hole; 27, anti-collapse shell; 28, upper blade angle; 29, upper adjustment jack; 30, middle adjustment jack; 31, lower adjustment jack; 32, separate upper pipe segment; 3 3. Diffusion steel plate; 34. Upper crossbeam; 35. Middle crossbeam; 36. Vertical column; 37. Lower crossbeam; 38. Separate lower pipe segment; 39. Channel steel track; 40. Pipe segment assembly bracket; 41. Connecting groove; 42. Lateral adjustment jack; 43. Horizontal jack; 44. Rubber plate; 45. Mobile counterweight bracket; 46. Counterweight block; 47. Travel wheel; 48. Main shaft; 49. Main crossbeam; 50. Limit block; 51. Boulder breaking bracket; 52. Fixed support arm; 53. Adjustment fixing bolt; 54. Fixed steel plate; 55. Adjustment handle; 56. Boulder; 57. Fixing rod; 58. Jacking machine casing; 59. Adjustable steel pressure plate; 60. Fixing bolt; 61. Rubber curtain; 62. Receiving end wall; 63. Anchor steel bar; 64. Fixed steel ring plate; 65. Adjustable support rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0032] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0033] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0034] like Figure 1-13 The utility model provides a complex geological rectangular jacking system, such as Figure 1 The complex geological rectangular jacking structure diagram shown includes a jacking machine 1, a pipe section, a jacking iron 15, a jack 14, a jack fixing bracket 5, a supporting steel box 13, an initial supporting wall 10, a cushion layer 8, a supporting bottom plate 7, an initial guide rail 4, and an initial bracket 3. For the construction of rectangular pipe jacking in complex geology, a cushion layer 8 and a supporting bottom plate 7 are sequentially laid at the lower part of the starting foundation pit, an initial supporting wall 10 is arranged at the rear end of the supporting bottom plate 7, a rear crossbeam 9 is arranged at the lower part of the initial supporting wall 10, a supporting reaction wall 6 is arranged on one side of the initial supporting wall 10, a top crossbeam 12 and a supporting rib wall 11 are connected to the initial supporting wall 10 to reinforce the initial supporting wall 10, a jack fixing bracket 5 is arranged at the front end of the supporting reaction wall 6, and a plurality of jacks 14 are arranged in the jack fixing bracket 5, and the top iron 15 is supported by the plurality of jacks 14, so that the top iron 15 and the pipe section support the pipe jacking machine 1 to enter the lining wall 2, and a starting guide rail 4 and a starting bracket 3 are sequentially arranged at the lower part of the pipe jacking machine 1.

[0035] like Figures 2-3As shown in the reinforcement structure diagram of the starting end of the pipe jacking construction, a plurality of PVC+steel pipe combination reinforcement holes 17 are arranged on the outside of the starting pipe segment 16 of the pipe jacking machine 1, a recyclable steel pipe 19 is arranged on the outside of the PVC+steel pipe combination reinforcement hole 17, a perforated PVC pipe 18 and a grouting pipe 22 are arranged on the inside of the PVC+steel pipe combination reinforcement hole 17, the grouting pipe 22 is passed from the outside of the recyclable steel pipe 19 to the inside of the perforated PVC pipe 18, and a PVC pipe cover plate 21 and a steel pressure plate 20 are arranged on the outside of the perforated PVC pipe 18.

[0036] Among them, the perforated PVC pipe 18 is provided with a plurality of overflow holes 23 along the circumference. When the grouting pipe 22 injects slurry into the perforated PVC pipe 18, the slurry flows outward from the positions of the plurality of overflow holes 23, so that the slurry flows into the PVC+steel pipe combined reinforcement hole 17 for reinforcement.

[0037] like Figure 4 As shown in the cutterhead modification structure diagram, the pipe jacking machine 1 with a complex geological rectangular pipe jacking structure is provided with a new cutterhead 25 and a new high-pressure cleaning hole 26 at the lower part of the original cutterhead 24, so as to reduce the blind area of ​​the original cutterhead 24 and increase the processing range.

[0038] like Figure 5 As shown in the structural diagram of the anti-collapse shell 27, the anti-collapse shell 27 is arranged at the front of the segment machine in the complex geological rectangular jacking structure, the upper blade angle 28 is arranged at the front of the anti-collapse shell 27, and the upper adjustment jack 29, the middle adjustment jack 30 and the lower adjustment jack 31 are arranged at the rear of the anti-collapse shell 27 to connect and adjust the positioning with the jacking machine 1.

[0039] When adjusting the positioning of the pipe jacking machine 1, the inclination angle and positioning position of the pipe jacking machine 1 can be adjusted by extending and retracting the upper adjustment jack 29, the middle adjustment jack 30 and the lower adjustment jack 31 to different lengths.

[0040] like Figure 6 As shown in the structural diagram of the segment assembly bracket 40, the segment assembly bracket 40 assembles the separate upper segment 32 and the separate lower segment 38 to form the segment 16. The segment assembly bracket 40 includes a channel steel rail 39, a lower cross beam 37, a middle cross beam 35 and an upper cross beam 34, wherein the lower cross beam 37, the middle cross beam 35 and the upper cross beam 34 are spliced ​​through vertical columns 36 to form a frame, and rollers are rotatably installed at the bottom of the frame and placed in the channel steel rail 39. A lateral adjustment jack 42 and a horizontal jack 43 are arranged on the upper part of the segment assembly bracket 40 to adjust the installation position of the separate upper segment 32, and a diffusion steel plate 33 and a rubber plate 44 are arranged at the ends of the lateral adjustment jack 42 and the horizontal jack 43. The separate upper segment 32 and the separate lower segment 38 are anchored by a connecting groove 41.

[0041] like Figures 7 to 9As shown in the installation structure diagram of the mobile counterweight support 45, a mobile counterweight support 45 is arranged inside the complex geological rectangular jacking pipe structure segment 16, and a plurality of counterweight blocks 46 are arranged on the upper part of the mobile counterweight support 45. The mobile counterweight support 45 includes a main beam 49 for carrying the counterweight blocks 46, and a running wheel 47 rotatably installed on the lower part of the main beam 49 through a main shaft 48. A channel steel track 39 is laid on the bottom inner side of the segment 16, and the running wheel 47 is placed in the channel steel track 39, and a limit block 50 is arranged on the inner side of the channel steel track 39 so that the running wheel 47 is limited by the limit block 50.

[0042] Among them, the running wheel 47 can move along the channel steel track 39, thereby driving a number of counterweight blocks 46 to move. When the counterweight blocks move to the specified position, limit blocks 50 are placed on both sides of the running wheel 47 to ensure the stability of the counterweight blocks.

[0043] like Figures 10-11 As shown in the structural diagram of the boulder breaking support 51, the boulder breaking support 51 is provided in the complex geological rectangular jacking structure for breaking boulders 56. A fixed steel plate 54, an adjustment handle 55 and an adjustment fixing bolt 53 are provided on the upper part of the boulder breaking support 51, and a fixed rod 57 and a fixed support arm 52 are provided on the lower part of the boulder breaking support 51.

[0044] In one embodiment of the present scheme, the fixed steel plate 54 is arranged in an annular structure, and a plurality of adjustment handles 55 and adjustment fixing bolts 53 are distributed along the circumference of the fixed steel plate 54. The fixing rod 57 is driven to rotate by rotating the adjustment handle 55, and the fixing rod 57 is controlled to be adjusted up and down along the fixed steel plate 54, so as to adjust the height of the fixed support arm 52, and the fixing rod 57 is limited by adjusting the fixing bolts 53.

[0045] The fixing rod 57 and the fixing arm 52 are arranged in an “L”-shaped structure, so that the “L”-shaped structure supports the lower part or the lower portion of the boulder 56 .

[0046] like Figures 12-13 In the hole exit structure diagram of the pipe jacking machine 1 shown in the figure, an adjustable steel pressure plate 59 is arranged on one side of the receiving end wall 62 to fix the rubber curtain 61, anchoring steel bars 63 and a fixed steel ring plate 64 are arranged on the receiving end wall 62, and the rubber curtain 61, fixing bolts 60, an adjustable steel pressure plate 59 and an adjustable support rod 65 are arranged on the outer side of the fixed steel ring plate 64, so that after the rubber curtain 61 is laid, the adjustable steel pressure plate 59 is placed on the upper part of the rubber curtain 61, and the adjustable steel pressure plate 59 is reinforced by the fixing bolts 60, and at the same time, one side of the adjustable steel pressure plate 59 is diagonally supported by the adjustable support rod 65.

[0047] The complex geological rectangular pipe jacking system in the utility model can be constructed according to the following construction steps:

[0048] Step 1, construction of the starting well: The pipe jacking machine 1 constructs the starting well, and a cushion layer 8 and a supporting bottom plate 7 are sequentially laid at the bottom of the starting foundation pit, and a starting supporting wall 10 is constructed at the rear end of the supporting bottom plate 7. A supporting reaction wall 6 is arranged on one side of the starting supporting wall 10, and a jack fixing bracket 5 is arranged at the front end of the supporting reaction wall 6, and a plurality of jacks 14 are arranged in the jack fixing bracket 5, and a plurality of jacks 14 are used to support the top iron 15, so that the top iron 15 and the pipe joint support the pipe jacking machine 1 to enter the inner lining wall 2, and a starting guide rail 4 and a starting bracket 3 are sequentially arranged at the bottom of the pipe jacking machine 1;

[0049] The pipe jacking machine 1 can be movably matched with the starting guide rail 4 by installing parts such as rollers, and the starting bracket 3 can be used to maintain the stability of the starting guide rail 4 and the stability of the movement of the pipe jacking machine 1.

[0050] Step 2: Initial end reinforcement construction: Use PVC + steel pipe combination reinforcement hole 17 to perform grouting reinforcement on the initial end;

[0051] The starting end refers to one end of the starting segment 16 .

[0052] Step 3: Cutter disk modification: a new cutter disk 25 and a new high-pressure cleaning hole 26 are arranged at the lower part of the original cutter disk 24;

[0053] Step 4: Installation of the anti-collapse rectangular shell: The anti-collapse shell 27 is installed at the front of the segment machine, the front of the anti-collapse shell 27 is provided with an upper blade angle 28, and the rear of the anti-collapse shell 27 is connected and adjusted and positioned with the pipe jacking machine 1 through the upper adjustment jack 29, the middle adjustment jack 30 and the lower adjustment jack 31;

[0054] Step 5, assembling the pipe segment 16: assembling the separated upper pipe segment 32 and the separated lower pipe segment 38 by means of the pipe segment assembly bracket 40 to form the pipe segment 16, and adjusting the installation position of the separated upper pipe segment 32 by means of the lateral adjustment jack 42 and the horizontal jack 43;

[0055] Step 6: Pipe jacking construction: During the pipe jacking construction, a movable counterweight support 45 is arranged inside the pipe segment 16 for counterweight treatment, and the isolated rock 56 is removed by the isolated rock removal support 51;

[0056] Step 7: Receiving by the pipe jacking machine 1 : The receiving end wall 62 of the pipe jacking structure fixes the rubber cord 61 through the adjustable steel pressing plate 59 .

[0057] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. A complex geological rectangular pipe jacking system, characterized by: The invention comprises a pipe jacking machine (1), a pipe joint, a jacking iron (15), a jack (14), a jack fixing bracket (5), a supporting steel box (13), an initial supporting wall (10), a cushion layer (8), a supporting bottom plate (7), an initial guide rail (4), and an initial bracket (3); a cushion layer (8) and a supporting bottom plate (7) are sequentially arranged at the lower part of the initial foundation pit, an initial supporting wall (10) is arranged at the rear end of the supporting bottom plate (7), a rear cross beam (9) is arranged at the lower part of the initial supporting wall (10), and a supporting support (10) is arranged on one side of the initial supporting wall (10). A supporting reaction wall (6) is provided, and a top crossbeam (12) and a supporting rib wall (11) are connected to the starting supporting wall (10). A jack fixing bracket (5) is provided at the front end of the supporting reaction wall (6), and a plurality of jacks (14) are provided in the jack fixing bracket (5). The jacking iron (15) is supported by the plurality of jacks (14), so that the jacking iron (15) and the pipe joint support the pipe jacking machine (1) to enter the inner lining wall (2). A starting guide rail (4) and a starting bracket (3) are provided in sequence at the lower part of the pipe jacking machine (1).

2. The complex geological rectangular jacking system according to claim 1 is characterized by: A plurality of PVC+steel pipe combination reinforcement holes (17) are arranged on the outside of the starting pipe segment (16) of the pipe jacking machine (1), a recyclable steel pipe (19) is arranged on the outside of the PVC+steel pipe combination reinforcement hole (17), a perforated PVC pipe (18) and a grouting pipe (22) are arranged on the inside of the PVC+steel pipe combination reinforcement hole (17), the grouting pipe (22) is passed from the outside of the recyclable steel pipe (19) to the inside of the perforated PVC pipe (18), and a PVC pipe cover plate (21) and a steel pressure plate (20) are arranged on the outside of the perforated PVC pipe (18).

3. The complex geological rectangular jacking pipe system according to claim 1 is characterized by: The pipe jacking machine (1) is provided with a newly added cutter disc (25) and a newly added high-pressure cleaning hole (26) at the lower part of the original cutter disc (24).

4. The complex geological rectangular jacking system according to claim 1 is characterized by: An anti-collapse shell (27) is arranged at the front of the segment machine, an upper blade angle (28) is arranged at the front of the anti-collapse shell (27), and an upper adjustment jack (29), a middle adjustment jack (30) and a lower adjustment jack (31) are arranged at the rear of the anti-collapse shell (27) to be connected with the pipe jacking machine (1).

5. The complex geological rectangular jacking pipe system according to claim 1 is characterized by: The invention also comprises a pipe segment assembly bracket (40), wherein the pipe segment assembly bracket (40) is used to assemble the separated upper pipe segment (32) and the separated lower pipe segment (38) to form a pipe segment (16), and the pipe segment assembly bracket (40) comprises a channel steel track (39), a lower cross beam (37), a middle cross beam (35) and an upper cross beam (34), wherein the lower cross beam (37), the middle cross beam (35) and the upper cross beam (34) are spliced ​​through vertical columns (36) to form a frame, and a roller is rotatably installed at the bottom of the frame, and the roller is placed in the channel steel track (39).

6. The complex geological rectangular jacking pipe system according to claim 5 is characterized by: A transverse adjustment jack (42) and a horizontal jack (43) are arranged on the upper part of the segment assembly bracket (40), and a diffusion steel plate (33) and a rubber plate (44) are arranged at the ends of the transverse adjustment jack (42) and the horizontal jack (43), and the separated upper segment (32) and the separated lower segment (38) are anchored through the connection groove (41).

7. The complex geological rectangular jacking pipe system according to claim 1 is characterized by: A movable counterweight bracket (45) is arranged inside the pipe segment (16), a plurality of counterweight blocks (46) are arranged on the upper part of the movable counterweight bracket (45), the movable counterweight bracket (45) comprises a main crossbeam (49) for carrying the counterweight blocks (46), and a running wheel (47) rotatably mounted on the lower part of the main crossbeam (49) through a main shaft (48), a channel steel track (39) is laid on the bottom of the inner side of the pipe segment (16), the running wheel (47) is placed in the channel steel track (39), and a limit block (50) is arranged on the inner side of the channel steel track (39) so that the running wheel (47) is limited by the limit block (50).

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