T-shaped intersection equal-section pipe jacking channel and construction method

Abstract

The application relates to the field of pipe jacking channels, and discloses a T-shaped intersecting equal-section pipe jacking channel, which comprises at least two equal-section pipe jacking channels, the pipe jacking channel comprises a plurality of common pipe sections, a connecting device is arranged at the intersecting position of the pipe jacking channel, the connecting device comprises a special pipe section one and a special pipe section two, the special pipe section one is arranged in an early pipe jacking channel, the special pipe section two is arranged at the end of a later pipe jacking channel, the special pipe section one is provided with a ring frame recess, the special pipe section two is provided with a ring frame splicing convex groove, and the ring frame recess and the ring frame splicing convex groove are mutually butted to realize the connection of the T-shaped intersecting pipe jacking channel. The equal-section pipe jacking channel and the special pipe section are utilized, and the T-shaped intersecting pipe jacking channel is connected by being successively started from different pipe jacking wells, the pipe jacking channel is applied to the interactive underground channel technology, the technical limitations of the pipe jacking channel connection are broken, and the adaptation range of the pipe jacking channel is enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe jacking channel, in particular to a T-shaped intersecting equal-section pipe jacking channel and a construction method. BACKGROUND

[0002] Pipe jacking construction method is a kind of trenchless construction technology, which has the characteristics of being able to use a series of earth excavation, steel pipe reinforcement, jack pushing and other processes to construct pipe tunnel on the ground or underground, without the need to excavate a large area of land and damage the ground surface, thus having many advantages. First, the pipe jacking construction method can save high land costs, save construction time, effectively improve construction efficiency, reduce pollution to the surrounding environment, and protect the ecological environment. Secondly, the pipe jacking construction method can reduce the influence on underground pipelines and underground facilities, avoid damaging underground water sources and public facilities, and will not damage road and building ground facilities, and can eliminate the adverse effects of construction noise and vibration.

[0003] In the application of pipe jacking construction method, the connection and intersection of pipe jacking channel is a difficult problem. The traditional pipe jacking construction method usually uses open excavation shaft area for connection, and the channel is usually arranged in an "L" shape. The pipe jacking launching and receiving shafts need to be corresponding to each other, and the positions of the corresponding pipe jacking launching and receiving shafts are limited, which limits the application of pipe jacking channel in interactive underground crossing channel technology, and needs to be further improved. SUMMARY

[0004] In view of the shortcomings of the prior art, the present application provides a T-shaped intersecting equal-section pipe jacking channel and a construction method, which applies pipe jacking channel to interactive underground channel technology, and overcomes the technical limitations of pipe jacking channel connection, thereby enhancing the adaptability of pipe jacking channel.

[0005] To achieve the above purpose, the present application realizes the following technical scheme: a T-shaped intersecting equal-section pipe jacking channel, comprising at least two equal-section pipe jacking channels, the pipe jacking channel comprising a plurality of ordinary pipe joints, a connecting device being arranged at the intersection position of the pipe jacking channel, the connecting device comprising a special pipe joint one and a special pipe joint two, the special pipe joint one being arranged between the plurality of ordinary pipe joints in the earlier pipe jacking channel, the special pipe joint two being arranged at the end of the later pipe jacking channel, the special pipe joint one being provided with a ring frame groove on one side, the special pipe joint two being provided with a ring frame splicing convex groove on one end, and the ring frame groove and the ring frame splicing convex groove being mutually connected to realize the connection of the T-shaped intersection of the pipe jacking channel.

[0006] Preferably, the special pipe joint one has a grouting hole for injecting a filling body to reinforce the connection position.

[0007] Preferably, the width of the special pipe joint one is greater than the width of the ordinary pipe joint, and the width of the special pipe joint two is the same as the width of the ordinary pipe joint.

[0008] The application also provides a construction method of the T-shaped intersection equal cross-section pipe jacking channel.

[0009] S1, the opening of the first launching well and the receiving well is implemented, the pipe jacking mechanical equipment is launched from the first launching well to carry out the pipe jacking of the preliminary pipe jacking channel, and the special pipe joint one is arranged at the connection position of the T-shaped intersection pipe jacking channel during the pipe jacking of the pipe jacking channel.

[0010] S2, the opening of the second launching well is implemented, the pipe jacking mechanical equipment is launched from the second launching well to the preliminary pipe jacking channel, and is pushed to the ring frame groove of the special pipe joint one of the later pipe jacking channel, after the filling body is injected into the grouting hole of the special pipe joint one to reinforce and stop water, the pipe jacking machine cutter head and the front shield are pulled out from the pipe jacking machine shell.

[0011] S3, the subsequent ordinary pipe joint continues to be pushed in until the front end of the special pipe joint two is connected with the special pipe joint one, the bolt is connected, and the filling body is injected through the grouting hole of the special pipe joint.

[0012] S4, after the stress stability of the pipe jacking interface is completed, the pre-arranged connection door hole of the preliminary pipe jacking channel is broken, the built-in waterproof condition stop water is arranged in the connection opening, and the construction of the T-shaped intersection equal cross-section pipe jacking channel is completed.

[0013] Preferably, the special pipe joint one is provided with a ring frame groove, the special pipe joint two is provided with a ring frame splicing convex groove, and the ring frame groove and the ring frame splicing convex groove are connected with each other.

[0014] Preferably, the width of the special pipe joint one is greater than the width of the ordinary pipe joint, and the width of the special pipe joint two is the same as the width of the ordinary pipe joint.

[0015] Preferably, the filling body comprises epoxy resin and inert slurry.

[0016] Preferably, the waterproof condition comprises elastic sealing material.

[0017] The application provides a T-shaped intersection equal cross-section pipe jacking channel and a construction method.

[0018] 1. The application realizes the connection of the T-shaped intersection pipe jacking channel by using the equal cross-section pipe jacking and arranging the special pipe joint, which is launched from different pipe jacking wells in sequence, and applies the pipe jacking channel to the interactive underground channel technology, so that the technical limitations of the pipe jacking channel connection are overcome, and the application range of the pipe jacking channel is enhanced.

[0019] 2. The application saves the investment of mechanical equipment and the engineering cost by using the equal cross-section pipe jacking, solves the problems of ground traffic relief and pipeline relocation in the early stage, saves the early engineering cost, and improves the engineering construction time and construction cost. DRAWINGS

[0020] Figure 1 Fig. 1 is a schematic diagram of the plane relationship of the T-shaped intersecting equal cross-section pipe jacking channel according to the present application;

[0021] Figure 2 Fig. 2 is a schematic diagram of the plane relationship of the pipe jacking channel after an implementation according to the present application;

[0022] Figure 3 Fig. 3 is a schematic diagram of the longitudinal section of the pipe jacking channel after an implementation according to the present application;

[0023] Figure 4 Fig. 4 is a schematic diagram of the cross section of a special pipe section at one place of the pipe jacking channel after an implementation according to the present application;

[0024] Figure 5 Fig. 5 is a schematic diagram of the plane relationship of the starting well two and the pipe jacking channel one according to the present application;

[0025] Figure 6 Fig. 6 is a schematic diagram of the plane relationship of the pipe jacking machine cutter head before discarding the shell and the previously implemented pipe jacking according to the present application;

[0026] Figure 7 Fig. 7 is a schematic diagram of the longitudinal section of the pipe jacking machine cutter head before discarding the shell and the previously implemented pipe jacking according to the present application;

[0027] Figure 8 Fig. 8 is a schematic diagram of the plane of the pipe jacking machine cutter head after discarding the shell and the pipe jacking after jacking completion according to the present application;

[0028] Figure 9 Fig. 9 is a schematic diagram of the longitudinal section of the pipe jacking machine cutter head after discarding the shell and the pipe jacking after jacking completion according to the present application;

[0029] Figure 10 Fig. 10 is a schematic diagram of the plane of the T-shaped intersecting equal cross-section pipe jacking channel after connection according to the present application;

[0030] Figure 11 Fig. 11 is a schematic diagram of the longitudinal section of the pipe jacking channel one of the T-shaped intersecting equal cross-section pipe jacking channel after connection according to the present application;

[0031] Figure 12 Fig. 12 is a schematic diagram of the longitudinal section of the pipe jacking channel two of the T-shaped intersecting equal cross-section pipe jacking channel after connection according to the present application.

[0032] 1, starting well one; 2, receiving well; 3, ordinary pipe section; 4, special pipe section one; 5, ring frame recess; 6, reserved connection door opening; 7, special pipe section two; 8, ring frame splicing convex groove; 9, pipe jacking machine shell; 10, pipe jacking machine cutter head; 11, front shield; 12, starting well two. DETAILED DESCRIPTION

[0033] With reference to the drawings and embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0034] Embodiments

[0035] Please refer to the drawings Figure 1 - the drawings Figure 12 The embodiments of the present application provide a T-shaped intersecting equal cross-section pipe jacking channel, which comprises at least two equal cross-section pipe jacking channels, the pipe jacking channel comprises a plurality of ordinary pipe sections 3, and a connecting device for connecting the two intersecting pipe jacking channels is arranged at the intersection position of the pipe jacking channel.

[0036] In one embodiment, the connecting device comprises a specially-made pipe section one 4 and a specially-made pipe section two 7.

[0037] In the embodiment, the specially-made pipe section one 4 is arranged between the plurality of ordinary pipe sections 3 in the early pipe jacking channel, and the specially-made pipe section two 7 is arranged at the end of the later pipe jacking channel. The specially-made pipe section one 4 is connected to the specially-made pipe section two 7 by jacking the later pipe jacking channel into the early pipe jacking channel, so as to realize the connection of the two pipe jacking channels.

[0038] In one embodiment, the side wall of the specially-made pipe section one 4 is provided with a ring frame recess 5, and a reserved connection door hole 6 is arranged in the middle of the ring frame recess 5. One end of the specially-made pipe section two 7 is provided with a ring frame splicing convex groove 8. The ring frame recess 5 and the ring frame splicing convex groove 8 are mutually butted, so as to realize the connection of the T-shaped intersecting pipe jacking channel.

[0039] In the embodiment, when the two pipe jacking channels intersect through the specially-made pipe section one and the specially-made pipe section two 7, the ring frame recess and the ring frame splicing convex groove 8 are mutually butted, so as to realize the connection of the T-shaped intersecting pipe jacking channel, and thus the pipe jacking channel is applied to the interactive underground channel technology, which gets rid of the technical limitations of the connection of the pipe jacking channel and enhances the adaptability range of the pipe jacking channel.

[0040] In one embodiment, the width of the specially-made pipe section one 4 is greater than the width of the ordinary pipe section 3, so as to facilitate the arrangement of equipment in the specially-made pipe section one 4.

[0041] In one embodiment, the width of the specially-made pipe section two 7 is the same as the width of the ordinary pipe section 3, so as to facilitate the pushing of the specially-made pipe section two 7 through the ordinary pipe section 3.

[0042] In one embodiment, the specially-made pipe section one 4 has a grouting hole for injecting a filling body to reinforce the connection position. The filling body can be epoxy resin or inert slurry.

[0043] The embodiment of the application provides a construction method of the T-shaped intersection equal cross-section pipe jacking channel, which comprises the following steps.

[0044] (1) the starting well one 1 and the receiving well 2 are implemented by using the open excavation method, after the starting well one 1 is implemented, the pipe jacking mechanical equipment starts from the starting well one 1 and proceeds to the receiving well 2, and a special pipe joint one 4 is arranged at the connection position of the T-shaped intersection pipe jacking channel in the proceeding process, and the pipe jacking mechanical equipment is hoisted out from the pipe jacking receiving well 2 after the pushing is completed;

[0045] (2) the starting well two 12 is implemented by using the open excavation method, the pipe jacking mechanical equipment is hoisted out from the pipe jacking receiving well 2 after the pipe jacking mechanical equipment pushes the early pipe jacking channel, and then the pipe jacking mechanical equipment starts from the pipe jacking starting well two 12 and proceeds to the late pipe jacking channel;

[0046] (3) the late pipe jacking channel is pushed to the early pipe jacking channel which has been implemented, the pipe jacking machine cutter head 10 and the front shield 11 are pulled out from the pipe jacking machine shell 9 after the pipe jacking machine cutter head 10 and the front shield 11 are pushed to the position where the pipe jacking machine cutter head 10 and the front shield 11 are flush with the outer side wall of the early pipe jacking channel, and then the filling body is injected through the grouting hole of the special pipe joint one 4 to reinforce and stop water;

[0047] (4) after the pipe jacking machine cutter head 10 and the front shield 11 are pulled out from the pipe jacking machine shell 9, the ordinary pipe joint 3 continues to push, until the ring frame splicing convex slot 8 on the outer side of the front special pipe joint two 7 is butted and connected with the ring frame groove 5 reserved in the early special pipe joint one 4, then the two special pipe joints are connected through bolts, and the filling body is injected through the grouting hole of the special pipe joint;

[0048] (5) after the pipe jacking interface is stressed and stabilized, the early pipe jacking reserved connection door opening 6 is broken, the connection opening is provided with a built-in waterproof condition stop water, and the T-shaped intersection equal cross-section pipe jacking channel is realized; wherein the waterproof condition can adopt elastic sealing materials, such as rubber, PVC film, polyurethane and the like.

[0049] Although the embodiments of the application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A T-shaped intersecting equal-section pipe jacking channel, characterized in that, The jacking channel includes at least two sections of equal cross-section. The jacking channel includes multiple ordinary pipe sections (3). A connecting device is provided at the intersection of the jacking channels. The connecting device includes a special pipe section one (4) and a special pipe section two (7). The special pipe section one (4) is located between multiple ordinary pipe sections (3) in the early jacking channel. The special pipe section two (7) is located at the end of the later jacking channel. A ring frame groove (5) is provided on one side of the special pipe section one (4). A ring frame splicing protrusion (8) is provided on one end of the special pipe section two (7). The ring frame groove (5) and the ring frame splicing protrusion (8) are connected to each other to realize the T-shaped connection of the jacking channels. The construction method of the T-shaped intersecting equal-section pipe jacking channel includes the following steps: S1. The opening of the starting shaft (1) and the receiving shaft (2) is carried out. The pipe jacking equipment starts from the starting shaft (1) to push the pipe jacking channel in the early stage. During the pushing process of the pipe jacking channel, a special pipe section (4) with a reserved connection door (6) is set at the T-shaped intersection pipe jacking channel connection position. S2. The second starting well (12) is opened. The pipe jacking machine starts from the second starting well (12) and jacks into the early pipe jacking channel. When it reaches the ring groove (5) of the special pipe section one (4) of the early pipe jacking channel, the filling material is injected through the grouting hole of the special pipe section one (4) to reinforce and stop water. Then the cutter head (10) and the front shield (11) of the pipe jacking machine are pulled out from the outer shell (9) of the pipe jacking machine. S3. The subsequent ordinary pipe section (3) continues to be pushed forward until the front end special pipe section two (7) is tongue and groove connected with the special pipe section one (4). The bolts are used to connect them, and the filler is injected through the grouting hole of the special pipe section. S4. After the jacking pipe interface is stabilized under stress, the reserved connection opening (6) of the jacking pipe channel is broken, and the connection opening is equipped with built-in waterproofing to stop water, thus completing the construction of the T-shaped intersecting equal-section jacking pipe channel.

2. The T-shaped intersecting equal-section jacking channel according to claim 1, characterized in that, The specially designed pipe section (4) has a grouting hole for injecting filler to reinforce the joint.

3. The T-shaped intersecting equal-section jacking channel according to claim 1, characterized in that, The width of the special pipe section one (4) is greater than the width of the ordinary pipe section (3), and the width of the special pipe section two (7) is the same as the width of the ordinary pipe section (3).

4. The T-shaped intersecting equal-section jacking channel according to claim 1, characterized in that, The filler includes epoxy resin and inert slurry.

5. A T-shaped intersecting equal-section jacking channel according to claim 1, characterized in that, The waterproofing conditions include resilient sealing materials.

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