Split type ultra-deep diaphragm wall joint pipe

Abstract

The utility model discloses a split type ultra-deep diaphragm wall joint pipe which comprises a large-diameter bottom pipe, and one end of the large-diameter bottom pipe is matched with a large-diameter inserting rod arranged at one end of a large-diameter joint pipe in an inserting mode through a large-diameter inserting groove. The other end of the large-diameter joint pipe is also connected with a large-diameter slot, the large-diameter slot is matched with the adjacent large-diameter joint pipe in an inserting manner, and a plurality of large-diameter joint pipes form a large-diameter pipe section; the end of the large-diameter pipe section is connected with the large-small-diameter connector, the other end of the large-small-diameter connector is connected with the small-diameter pipe section, and the small-diameter pipe section is formed by connecting a plurality of small-diameter connector pipes. The device solves the problem that the pipe drawing difficulty of the diaphragm wall joint pipe in the prior art is large, and has the characteristic that negative pressure is prevented from being generated at the bottom of the pipe drawing bench in a mode of actively grouting from the orifice to the hole bottom, so that the pipe drawing difficulty is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of anti-seepage walls, and in particular relates to a split type ultra-deep anti-seepage wall joint pipe. Background Art

[0002] With the development of water conservancy and hydropower, the development of water conservancy and hydropower projects has gradually expanded to the western plateaus and canyon basins. These areas are characterized by high mountains, deep valleys, thick overburden, and complex geological conditions. Cutoff walls are generally used as the vertical anti-seepage system for dams. These walls are constructed by using mud to form trenches, then pouring concrete or backfilling other anti-seepage materials underneath the mud to create a continuous underground wall. Their function is to prevent seepage. Typically, these walls are divided into multiple unit slots and unit wall segments, which are connected through joints or joints to form a complete anti-seepage wall. At the joints, the pipe pulling method is often used. Before pouring concrete in the first-phase trench section, joint pipes are placed on both sides of the trench section. After the concrete has initially set, the joint pipes are pulled out using a pipe pulling machine or crane, thus forming a smooth semi-cylindrical surface on both sides of the first-phase trench section, facilitating the construction of the second-phase trench section and forming a joint surface. For ultra-deep anti-seepage walls, if the entire joint pipe is made of large diameter, the overall cost and weight will increase. At the same time, as the concrete pouring progresses, the joint pipe is squeezed toward the side wall, increasing the contact area with the original soil and friction. This makes pipe pulling more difficult and can easily cause pipe casting accidents. Therefore, it is necessary to design a split ultra-deep anti-seepage wall joint pipe to solve the above problems. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a split type ultra-deep anti-seepage wall joint pipe. The device solves the problem of the existing technology that the anti-seepage wall joint pipe is difficult to pull out. It has the characteristics of avoiding negative pressure at the bottom of the pipe pulling machine by actively grouting from the hole mouth to the hole bottom, thereby reducing the difficulty of pipe pulling.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] The split-type ultra-deep anti-seepage wall joint pipe includes a large-diameter bottom pipe, one end of which is plugged into a large-diameter plug rod provided at one end of the large-diameter joint pipe through a large-diameter slot; the other end of the large-diameter joint pipe is also connected to a large-diameter slot, which is plugged into and matched with an adjacent large-diameter joint pipe, and multiple sections of large-diameter joint pipe form a large-diameter pipe section; the end of the large-diameter pipe section is connected to a large-diameter connector, and the other end of the large-diameter connector is connected to the small-diameter pipe section. The small-diameter pipe section is formed by connecting multiple sections of small-diameter joint pipe.

[0006] Preferably, the small-diameter joint pipe is a hollow floating pipe with multiple hollow buoyancy boxes arranged inside; one end of the small-diameter joint pipe is connected to a small-diameter slot, and the other end is connected to a small-diameter insertion rod that is plugged into the small-diameter slot of the adjacent small-diameter joint pipe.

[0007] Preferably, the large-diameter joint pipe includes a hollow floating pipe section and a hollow through-pipe section; a plurality of hollow buoyancy boxes are provided inside the floating pipe section.

[0008] Furthermore, the buoyancy box is a closed hollow space, which can provide buoyancy for the floating pipe, reducing the self-weight of the overall process of the joint pipe; and the through pipe section can increase the self-weight of the joint pipe when it is lowered.

[0009] Preferably, the large-diameter bottom pipe is a hollow through pipe, and a bottom valve is hinged at the other end of the large-diameter bottom pipe.

[0010] Preferably, the large and small diameter connectors are hollow funnel-shaped tubular structures, with the large diameter end connected to a large diameter plug rod that is plugged into the large diameter slot at the end of the large diameter pipe section, and the small diameter end connected to a small diameter slot that is plugged into the small diameter plug rod at the end of the small diameter pipe section.

[0011] Preferably, a plurality of placement holes are provided on the outer surfaces of the small-diameter joint pipe, the large-diameter joint pipe, the large-diameter bottom pipe and the large-diameter and small-diameter connectors.

[0012] Preferably, the small-diameter joint pipe, the large-diameter joint pipe and the large-diameter and small-diameter connectors are all connected with seamless steel pipes, and the seamless steel pipes include grouting pipes, and the surfaces of the grouting pipes are connected with a plurality of inclination sensors.

[0013] Preferably, through pin holes are provided on both sides of the small-diameter slot and the large-diameter slot, and through pin holes are provided on the surfaces of the small-diameter insertion rod and the large-diameter insertion rod. After the slot and the insertion rod are connected, they are fixed by passing the pin shaft through the pin hole.

[0014] Preferably, the pin shaft includes a rotating shaft, which passes through the pin hole and rotates with the inner wall of the pin hole; through holes are opened at both ends of the rotating shaft, and steel pin rods are inserted into the through holes, and both ends of the steel pin rods are threadedly connected to limit plates.

[0015] The beneficial effects of the split type ultra-deep anti-seepage wall joint pipe provided by the utility model are as follows:

[0016] A number of rest holes are provided on each joint pipe of the device, which can be used as temporary rest holes when the joint pipe is laid down, and as lifting holes when pulling out, and can also effectively reduce the dead weight of the joint pipe; the large-diameter joint pipe is mainly used for pouring ultra-deep anti-seepage walls, and the small-diameter joint pipe is used as the lifting pipe, which is connected by a reducer, reducing the diameter of the upper joint pipe, effectively reducing the weight and friction during the lifting process, reducing the risk of casting pipes, and saving construction costs; the negative pressure at the bottom of the pipe pulling machine can be avoided by actively grouting from the hole mouth to the hole bottom, thereby reducing the difficulty of pipe pulling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the overall structure of the reducer type joint pipe device of the utility model;

[0019] Figure 2 This is a structural diagram of the small-diameter joint pipe device of the utility model;

[0020] Figure 3 This is a schematic structural diagram of the large-diameter joint pipe device of the utility model;

[0021] Figure 4 This is a schematic structural diagram of the large-diameter joint pipe bottom pipe device of the utility model;

[0022] Figure 5 This is a structural diagram of a large-caliber connecting joint device of the utility model;

[0023] Figure 6 This is a schematic cross-sectional view of the reducer type joint pipe device of the present invention;

[0024] Figure 7 This is a schematic diagram of the lifting operation of the reducer joint pipe of the utility model;

[0025] Figure 8 This is a schematic diagram of the pull-out operation of the reducer joint pipe of the utility model;

[0026] Figure 9 This is a schematic diagram of the pin structure of the utility model;

[0027] Figure 10 This is a schematic end view of a large-diameter bottom pipe of the present invention;

[0028] Figure 11 This is a structural diagram of the carrying pole and temporary carrying plate of the utility model;

[0029] In the figure: small-diameter joint pipe 1, small-diameter slot 11, small-diameter insertion rod 12, shelving hole 13, buoyancy box 14, large-diameter joint pipe 2, large-diameter insertion rod 22, large-diameter bottom pipe 3, large-diameter slot 31, bottom valve 32, large-diameter and small-diameter connector 4, hydraulic pipe pulling machine 5, jacking platform 51, hydraulic jacking device 52, temporary shelving base 53, seamless steel pipe 6, grouting pipe 61, inclination sensor 62, lifting tool 7, steel wire rope 71, I-shaped steel frame 72, shelving pole 8, pin 9, rotating shaft 91, steel pin rod 92, limit plate 93, temporary shelving plate 10. DETAILED DESCRIPTION

[0030] Example 1:

[0031] like Figures 1 to 11In the split-type ultra-deep anti-seepage wall joint pipe, it includes a large-diameter bottom pipe 3, one end of the large-diameter bottom pipe 3 is plugged into and matched with a large-diameter plug rod 22 provided at one end of a large-diameter joint pipe 2 through a large-diameter slot 31; the other end of the large-diameter joint pipe 2 is also connected to a large-diameter slot 31, which is plugged into and matched with the adjacent large-diameter joint pipe 2, and multiple sections of large-diameter joint pipe 2 form a large-diameter pipe section; the end of the large-diameter pipe section is connected to a large-diameter connector 4, and the other end of the large-diameter connector 4 is connected to the small-diameter pipe section, and the small-diameter pipe section is formed by connecting multiple sections of small-diameter joint pipe 1.

[0032] Preferably, the small-diameter joint pipe 1 is a hollow floating pipe with multiple hollow float boxes 14 arranged inside; one end of the small-diameter joint pipe 1 is connected to a small-diameter slot 11, and the other end is connected to a small-diameter insertion rod 12 that is plugged into the small-diameter slot 11 of the adjacent small-diameter joint pipe 1.

[0033] Preferably, the large-diameter joint pipe 2 includes a hollow floating pipe section and a hollow through-pipe section; a plurality of hollow buoyancy boxes 14 are provided inside the floating pipe section.

[0034] Furthermore, the buoyancy box 14 is a closed hollow space, which can provide buoyancy for the floating pipe, reducing the self-weight of the overall process of the joint pipe; and the through pipe section can increase the self-weight of the joint pipe when it is lowered.

[0035] Preferably, the large-diameter bottom pipe 3 is a hollow through pipe, and a bottom valve 32 is hinged at the other end of the large-diameter bottom pipe 3 .

[0036] Preferably, the large and small diameter connectors 4 are hollow funnel-shaped tubular structures, with the large diameter end connected to a large diameter plug rod 22 that is plugged into the large diameter slot 31 at the end of the large diameter pipe section, and the small diameter end connected to a small diameter slot 11 that is plugged into the small diameter plug rod 12 at the end of the small diameter pipe section.

[0037] Preferably, a plurality of placement holes 13 are formed on the outer surfaces of the small-diameter joint pipe 1 , the large-diameter joint pipe 2 , the large-diameter bottom pipe 3 and the large-diameter and small-diameter connectors 4 .

[0038] Preferably, the small-diameter joint pipe 1 , the large-diameter joint pipe 2 and the large-diameter and small-diameter connectors 4 are all connected with seamless steel pipes 6 , and the seamless steel pipes 6 include grouting pipes 61 , and a plurality of inclination sensors 62 are connected to the surface of the grouting pipes 61 .

[0039] Preferably, through pin holes are provided on both sides of the small-diameter slot 11 and the large-diameter slot 31, and through pin holes are provided on the surface of the small-diameter insertion rod 12 and the large-diameter insertion rod 22. After the slots and the insertion rods are connected, they are fixed by passing the pin shaft 9 through the pin holes.

[0040] Preferably, the pin shaft 9 includes a rotating shaft 91, which passes through the pin hole and rotates with the inner wall of the pin hole; through holes are opened at both ends of the rotating shaft 91, and a steel pin rod 92 is inserted into the through hole, and both ends of the steel pin rod 92 are threadedly connected to the limit plate 93.

[0041] Example 2:

[0042] In this embodiment, a construction method based on the split ultra-deep anti-seepage wall joint pipe is provided, comprising the following steps:

[0043] S1, a hydraulic pipe pulling machine 5 is placed at the orifice, and the hydraulic pipe pulling machine 5 includes a jacking platform 51, a hydraulic jacking device 52 and a temporary placement base 53; a steel wire rope 71 is suspended by a car crane and connected to the large-diameter slot 31 of the large-diameter bottom pipe 3 through a lifting tool 7. After the large-diameter bottom pipe 3 is vertically erected, it is lowered to the orifice by the hydraulic pipe pulling machine 5. After it reaches the predetermined position, a placement shoulder pole 8 is used to place the large-diameter joint pipe 2 section on the hydraulic pipe pulling machine 5. Similarly, the next large-diameter joint pipe 2 is lifted, and the large-diameter insertion rod 22 of this joint pipe is connected to the large-diameter opening of the previous bottom pipe. The two large-diameter joint pipes 2 are connected to each other through the diameter slot 31, and the grouting pipe 61 and the inclination sensor 62 inside the pipe section are connected at the same time, and fixed with the pin shaft 9; the two large-diameter joint pipes 2 that have been connected are lifted, the placing shoulder pole 8 is removed, and the large-diameter joint pipe 2 section composed of the two large-diameter joint pipes 2 is lowered to the predetermined position. The next large-diameter joint pipe 2 is placed on the hydraulic pipe pulling machine 5 using the placing shoulder pole 8, and the subsequent large-diameter joint pipe 2 is lifted. The above steps are repeated for installation until all large-diameter joint pipes 2 are lowered into the hole; the placing shoulder pole 8 is plugged into the placing hole 13;

[0044] S2, use a car crane to hang a wire rope 71 and connect it to the small-diameter slot 11 of the large-diameter connector 4 through the lifting tool 7, lift it to the large-diameter joint pipe 2 at the orifice, connect the large-diameter plug rod 22 of the large-diameter connector 4 with the large-diameter slot 31 of the large-diameter joint pipe 2, connect the grouting pipe 61 and the inclination sensor 62, and fix them with the pin 9; lift the large-diameter connector 4 and the large-diameter joint pipe 2 that have been connected, remove the placing shoulder pole 8, lower the connected pipe section, and after it reaches the predetermined position, use the placing shoulder pole 8 to place the next section of the small-diameter joint pipe 1 on the hydraulic pipe pulling machine 5;

[0045] S3, use a car crane to hang the wire rope 71 and connect it to the small-diameter slot 11 of the small-diameter joint pipe 1 through the lifting tool 7. After the small-diameter joint pipe 1 is vertical, the small-diameter insertion rod 12 of the small-diameter joint pipe 1 is connected to the small-diameter slot 11 of the large-diameter and small-diameter connector 4, and the grouting pipe 61 and the inclination sensor 62 are connected and fixed with the pin 9; lift the pipe section that has been connected, remove the shelf shoulder 8, lower the pipe section that has been connected to the predetermined position, use the shelf shoulder 8 to place the next section of the small-diameter joint pipe 1 on the hydraulic pipe pulling machine 5, and lift the subsequent small-diameter joint pipes 1 until all the small-diameter joint pipes 1 are lowered into the hole;

[0046] S4, when the concrete is poured to 50m, use the hydraulic pipe pulling machine 5 to pull out the joint pipe section:

[0047] First, a placing shoulder pole 8 is used to place the joint pipe section on the jacking platform 51 of the hydraulic pipe pulling machine 5, and grouting is performed from the ground through the grouting pipe 61 in the joint pipe section to ensure that there is no negative pressure at the bottom of the pipe. At the same time, the hydraulic jacking device 52 is started to lift the joint pipe by 1 to 2 meters, and then a temporary shelving plate 10 is inserted into the temporary shelving base 53 to temporarily fix the joint pipe section. Then, the placing shoulder pole 8 is pulled out, and the jacking platform 51 is lowered to a predetermined position. Then, the placing shoulder pole 8 is inserted into the second shelving hole 13 of the joint pipe, and the temporary shelving plate 10 is pulled out. The hydraulic jacking device 52 is started to lift the joint pipe again by 1 to 2 meters. The above process is repeated until each section of the joint pipe is ejected. After the pin shaft 9 connected to the joint pipe is pulled out, each section of the ejected joint pipe is lifted to the remaining area by a car crane.

[0048] Furthermore, the lifting fixture 7 is composed of two steel wire ropes 71 and an I-shaped steel frame 72; wherein, the steel wire rope 71 is suspended by a car crane and connected to the slot end of the joint pipe through the I-shaped steel frame 72 of the lifting fixture 7.

[0049] Furthermore, the main body of the placing shoulder pole 8 is made of a high-strength steel structure, which matches the placing hole 13 reserved for the joint pipe and is used to place the joint pipe on the pipe pulling machine.

[0050] Furthermore, the temporary placement plate 10 is made of high-strength steel and matches the placement hole 13 reserved for the joint pipe, so as to temporarily place the joint pipe on the temporary placement base 53 of the pipe pulling machine.

Claims

1. Split type ultra-deep anti-seepage wall joint pipe, characterized by: The invention comprises a large-diameter bottom tube (3), one end of which is plugged into a large-diameter plug rod (22) provided at one end of a large-diameter joint tube (2) through a large-diameter slot (31); the other end of the large-diameter joint tube (2) is also connected to a large-diameter slot (31) and plugged into an adjacent large-diameter joint tube (2); a plurality of large-diameter joint tubes (2) form a large-diameter pipe section; the end of the large-diameter pipe section is connected to a large-diameter connector (4); the other end of the large-diameter connector (4) is connected to a small-diameter pipe section; the small-diameter pipe section is connected by a plurality of small-diameter joint tubes (1). The small-diameter joint pipe (1) is a hollow floating pipe, and a plurality of hollow buoyancy boxes (14) are arranged inside the pipe. One end of the small-diameter joint pipe (1) is connected to a small-diameter slot (11), and the other end is connected to a small-diameter insertion rod (12) for plugging and matching with the small-diameter slot (11) of the adjacent small-diameter joint pipe (1). The large-diameter joint pipe (2) includes a hollow floating pipe section and a hollow through-pipe section. A plurality of hollow buoyancy boxes (14) are arranged inside the floating pipe section. The large-diameter bottom pipe (3) is a hollow through-pipe. The other end of the large-diameter bottom pipe (3) is hingedly connected to a bottom valve (32).

2. The split type ultra-deep anti-seepage wall joint pipe according to claim 1, characterized in that: The large and small diameter connectors (4) are hollow funnel-shaped tubular structures. The large diameter end is connected to a large diameter plug rod (22) that is plugged into a large diameter slot (31) at the end of the large diameter pipe section, and the small diameter end is connected to a small diameter slot (11) that is plugged into a small diameter plug rod (12) at the end of the small diameter pipe section.

3. The split type ultra-deep anti-seepage wall joint pipe according to claim 1, characterized in that: Multiple placement holes (13) are provided on the outer surfaces of the small-diameter joint pipe (1), the large-diameter joint pipe (2), the large-diameter bottom pipe (3), and the large-diameter and small-diameter connectors (4).

4. The split type ultra-deep anti-seepage wall joint pipe according to claim 1, characterized in that: The small-diameter joint pipe (1), the large-diameter joint pipe (2), and the large-diameter and small-diameter connectors (4) are all internally connected with seamless steel pipes (6), the seamless steel pipes (6) including grouting pipes (61), and the surfaces of the grouting pipes (61) are connected with a plurality of inclination sensors (62).

5. The split type ultra-deep anti-seepage wall joint pipe according to claim 1, characterized in that: Through pin holes are provided on both sides of the small-diameter slot (11) and the large-diameter slot (31), and through pin holes are provided on the surfaces of the small-diameter plug rod (12) and the large-diameter plug rod (22). After the slots and the plug rods are plugged in, they are fixed by passing the pin shaft (9) through the pin holes.

6. The split type ultra-deep anti-seepage wall joint pipe according to claim 5, characterized in that: The pin shaft (9) includes a rotating shaft (91), which passes through the pin hole and rotates with the inner wall of the pin hole; through holes are opened at both ends of the rotating shaft (91), and steel pin rods (92) are inserted into the through holes. Both ends of the steel pin rod (92) are threadedly connected to limit plates (93).

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