River-oriented water-rich stratum concrete pipe slurry balance jacking pipe and construction method thereof
By designing an L-shaped grouting trough and a spring, the problem of high frictional resistance caused by grout impacting the soil during grouting was solved, thus improving grouting uniformity and construction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-25
- Publication Date
- 2026-04-07
AI Technical Summary
In existing technologies, the grout directly impacts the soil around the pipeline during the grouting process, leading to uneven grouting and grout leakage, which in turn increases the frictional resistance during pipe jacking.
The combination of an L-shaped spray trough and spring one allows the slurry to push the top block to move vertically, which in turn moves the stabilizing plate vertically, reducing frictional resistance. The rebound of spring one also blocks the spray trough, preventing slurry backflow and ensuring uniform grouting.
This effectively reduces frictional resistance during pipeline travel, prevents grout from disturbing the soil, and improves the uniformity of grouting and construction efficiency.
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Figure CN121803264A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of underground pipeline construction, in particular to a concrete pipe slurry balance jacking pipe for river-adjacent water-rich stratum and a construction method thereof. BACKGROUND
[0002] The slurry balance jacking pipe is a mechanical automatic jacking pipe construction method which cuts soil in full section, balances soil pressure and underground water pressure by slurry pressure, and uses slurry as medium for conveying discarded soil. The slurry balance jacking pipe system mainly comprises a jacking pipe head, a ground operating platform and other auxiliary equipment. The jacking pipe head has a PLC control box inside. The ground operating platform gives action signal to the jacking pipe head to control the action of the jacking pipe head. In order to reduce frictional resistance during jacking and prevent ground subsidence along the pipeline, during the jacking process, the "thixotropic slurry" is injected into the space between the outer wall of the pipeline and the soil layer through the grouting hole reserved in the pipeline by using a slurry pump. The thixotropic slurry can play a lubricating role during jacking.
[0003] In the prior art, the grouting hole is usually directly formed on the pipeline, and then the slurry is injected into the space between the outer wall of the pipeline and the soil layer through the grouting hole by using a slurry pump. However, the slurry will directly impact the soil around the pipeline, which will cause the slurry to disturb the surrounding soil, resulting in uneven grouting and slurry running, and further causing large frictional resistance during jacking. SUMMARY
[0004] In view of the deficiencies of the prior art, the present application provides a concrete pipe slurry balance jacking pipe for river-adjacent water-rich stratum and a construction method thereof, which solves the problem that in the prior art, the slurry will directly impact the soil around the pipeline during grouting, which will cause the slurry to disturb the surrounding soil, resulting in uneven grouting and slurry running, and further causing large frictional resistance during jacking.
[0005] To achieve the above object, the present application is implemented by the following technical scheme: a concrete pipe slurry balance jacking pipe for river-adjacent water-rich stratum, comprising a soil layer, a channel is formed in the soil layer, a jacking pipe head is slidably connected to the inner wall of the soil layer, the outer wall of the jacking pipe head is slidably connected to the inner wall of the channel, a pipeline body is attached to one side of the jacking pipe head, a conical ring two is fixed to the outer wall of the pipeline body, a ring plate is fixed to the side of the conical ring two away from the jacking pipe head, a plurality of stable plates are attached to the outer side of the ring plate, a spring one and a sliding rod are fixed to the inner side of the stable plate, one end of the spring one is fixed to the inside of the ring plate, a sliding block is slidably connected to the inner wall of the ring plate, the outer wall of the sliding rod away from the stable plate is attached to the outer wall of the sliding block, a top block is attached to one side of the sliding block, an L-shaped grouting groove is formed in the outer wall of the ring plate, the outer wall of the top block away from the stable plate is slidably connected to the inner wall of the L-shaped grouting groove, and an L-shaped flow guide is formed in the outer wall of the top block.
[0006] Through the technical scheme, the L-shaped grouting slot is used to make the mud push the top block to move vertically, drive the stabilizing plate to move vertically, reduce the frictional resistance in the advancing process of the pipeline body, and make the top block block the L-shaped grouting slot through the cooperation of the spring, so that the mud is prevented from flowing back, and the stabilizing plate is pressed against the inner wall of the passage to stabilize, thereby solving the problem that in the prior art, the slurry directly impacts the soil around the pipeline in the grouting process, the slurry disturbs the surrounding soil, uneven grouting and slurry running occur, and the frictional resistance in the pipe jacking is large.
[0007] Preferably, a rubber tube is fixed to the side wall between the stabilizing plate and the ring plate, one end of the sliding rod is located in the spring, and the spring is located in the rubber tube.
[0008] Preferably, a lifting block is fixed to the side of the sliding rod away from the stabilizing plate, the outer wall of the lifting block is attached to the outer wall of the push block, the outer wall of the lifting block attached to the push block is arc-shaped, and the side of the push block away from the sliding rod is arc-shaped.
[0009] Preferably, a spring is fixed to the side of the top block away from the pipeline body, one end of the spring is fixed to the inner wall of the ring plate, the side of the push block away from the sliding rod is slidingly connected to the outer wall of the top block, the two sides of the push block are fixed with sliding blocks, and the outer walls of the sliding blocks are slidingly connected to the inner wall of the ring plate.
[0010] Preferably, one side of the L-shaped grouting slot passes through the ring plate away from one side of the conical ring two, the inner wall of the pipeline body is provided with a grouting inlet, and the grouting inlet is communicated with the L-shaped grouting slot.
[0011] Preferably, a plurality of supporting blocks are fixed to the outer side of the ring plate, and the side of the supporting block away from the ring plate is attached to the inner side of the stabilizing plate.
[0012] Preferably, a conical ring one is fixed to the side of the ring plate away from the conical ring two, the two sides of the stabilizing plate are slidingly connected to the opposite side walls of the conical ring two and the conical ring one, respectively, a blocking assembly is installed between the two stabilizing plates, the blocking assembly comprises a telescopic pipe, one side of the telescopic pipe is fixed to the outer wall of one of the stabilizing plates, and the other side of the telescopic pipe is slidingly connected to the inner wall of the stabilizing plate.
[0013] Preferably, the blocking assembly comprises a sliding plate, one side of the sliding plate is fixed to the other side of the telescopic pipe, the outer wall of the sliding plate is slidingly connected to the inner wall of the other stabilizing plate, a guide rod and a spring are fixed to the side of the sliding plate away from the telescopic pipe, one end of the guide rod away from the sliding plate is slidingly connected to the inner wall of the other stabilizing plate, and one end of the spring away from the sliding plate is fixed to the inner wall of the other stabilizing plate.
[0014] Preferably, the side wall between the opposite sides of the first and second tapered rings is fixed with a sealing ring, the opposite sides of the two sealing rings are respectively attached to the two sides of the stable plate, the inner side of the first tapered ring is fixedly provided with a plurality of duckbill check valves, and the outer wall of the duckbill check valve penetrates through the two sides of the first tapered ring.
[0015] A construction method of a concrete pipe mud water balance pipe jacking in a river-adjacent water-rich stratum, comprising the following steps: S1, the pipe jacking machine pushes the pipe jacking head, a channel is formed in the soil layer, the pipe body is placed at the entrance of the channel, one side of the pipe body is attached to one side of the pipe jacking head, and the pipe jacking machine pushes the pipe body and the pipe jacking head to travel; S2, during the travel of the pipe body, grouting is started, the slurry enters the L-shaped grouting slot through the grouting inlet to push the top block to move upwards, the slide rod drives the stable plate to move towards the ring plate, at the same time, the slurry is guided by the L-shaped grouting slot and the L-shaped flow guide to move in a direction opposite to the travel direction; S3, after the pipe body stops traveling, grouting is completed, the top block releases the limit of the slide rod, the spring one pushes the stable plate to press and stabilize the inner wall of the channel, and the construction of the pipe body is completed.
[0016] The present application provides a concrete pipe mud water balance pipe jacking in a river-adjacent water-rich stratum and a construction method thereof. 1, the present application makes the slurry push the top block to move vertically when the pipe body travels, the slide rod drives the stable plate to move vertically, thereby reducing the frictional resistance in the travel process of the pipe body, after stopping grouting, the rebound of the spring one blocks the L-shaped grouting slot with the top block, avoids backflow of the slurry, drives the stable plate to move vertically, and presses and stabilizes the inner wall of the channel, thereby solving the problem that in the prior art, the slurry directly impacts the soil around the pipe during grouting, the slurry disturbs the surrounding soil, uneven grouting and slurry running occur, and the frictional resistance during pipe jacking is large.
[0017] 2, the present application sets the spring two and increases the vertical sliding distance of the top block, so that before the L-shaped grouting slot and the L-shaped flow guide are connected, the top block has slid away from the arc surface of the push block on the side away from the pipe body, avoiding the vertical reciprocating movement of the stable plate caused by unstable slurry pressure, thereby realizing the reduction of frictional force in the travel process of the pipe body.
[0018] 3, the present application wraps the spring one with the rubber tube, and there is a space between the stable plate and the ring plate through the support block, thereby avoiding the problem that the stable plate and the ring plate cannot be attached due to the presence of the slurry, thereby helping to improve the construction efficiency of the pipe body.
[0019] 4、The application realizes the isolation of large particles into the stable plate and the ring plate, thereby helping to improve the efficiency of the pipeline body, through the sliding connection of the sliding plate and the inner wall of another stable plate, the fixation of the outer wall of the telescopic pipe and the outer wall of a stable plate, the sliding connection of the outer wall of the cone ring one and the cone ring two on both sides of the stable plate, and the cooperation of the sealing ring and the duckbill check valve. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the application; Figure 2 It is a schematic diagram of the three-dimensional structure of the application; Figure 1 It is an enlarged schematic diagram of position A in the middle; Figure 3 It is a schematic diagram of the interception assembly structure of the application; Figure 4 It is a schematic diagram of the three-dimensional structure of the application; Figure 3 It is an enlarged schematic diagram of position B in the middle; Figure 5 It is an exploded schematic diagram of the ring plate of the application; Figure 6 It is a schematic diagram of the partial cross-section structure of the stable plate of the application; Figure 7 It is a schematic diagram of the partial cross-section structure of the ring plate of the application; Figure 8 It is an enlarged schematic diagram of position C in the middle. Figure 7
[0021] 1, pipeline body; 2, soil layer; 3, cone ring one; 4, stable plate; 5, cone ring two; 6, pipe jacking head; 7, channel; 8, ring plate; 9, L-shaped shotcreting groove; 10, duckbill check valve; 11, interception assembly; 110, telescopic pipe; 111, spring three; 112, guide rod; 113, sliding plate; 12, rubber pipe; 13, support block; 14, sealing ring; 15, spring one; 16, spring two; 17, sliding rod; 18, lifting block; 19, push block; 20, top block; 21, grout inlet; 22, L-shaped flow guide; 23, sliding block. DETAILED DESCRIPTION
[0022] The technical solutions of the application will be described clearly and completely below in combination with the drawings of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.
[0023] Please refer to the drawings of the application Figure 1 , the drawings of the application Figure 7 and the drawings of the application Figure 8 The embodiment of the present application provides a kind of riverfront water-rich stratum concrete pipe mud water balance pipe jacking, including soil layer 2, channel 7 is set in soil layer 2, the inner wall of soil layer 2 is slidably provided with pipe jacking head 6, the outer wall of pipe jacking head 6 is slidably connected in the inner wall of channel 7, the one side of pipe jacking head 6 is attached with pipeline body 1, the outer wall of pipeline body 1 is fixed with taper ring two 5, the one side of taper ring two 5 away from pipe jacking head 6 is fixed with ring plate 8, the outside of ring plate 8 is attached with several stable plates 4, the inside of stable plate 4 is fixed with spring one 15 and slide rod 17, one end of spring one 15 is fixed in the inside of ring plate 8, the inner wall of ring plate 8 is slidably provided with sliding block 23, the outer wall of the one end of slide rod 17 away from stable plate 4 and the outer wall of sliding block 23 are attached, the one side of sliding block 23 is attached with top block 20, the outer wall of ring plate 8 is provided with L-shaped spouting slot 9, the outer wall of the one end of top block 20 away from stable plate 4 is slidably connected in the inner wall of L-shaped spouting slot 9, the outer wall of top block 20 is provided with L-shaped flow guide 22; Specifically, the diameter of pipeline body 1 is less than the diameter of taper ring two 5, the diameter of taper ring two 5 is less than the diameter of pipe jacking head 6, the one side of taper ring two 5 close to pipe jacking head 6 is provided with inclined plane, so that the mud resistance between pipeline body 1 and channel 7 is reduced during the advancing process of pipeline body 1;When grouting, the mud enters L-shaped spouting slot 9 through pipeline body 1, pushes top block 20 to move vertically, drives sliding block 23 to move horizontally, and then makes slide rod 17 move towards ring plate 8, overcomes the elastic potential energy of spring one 15, drives stable plate 4 to move towards ring plate 8, when the movement of top block 20 makes the L-shaped flow guide 22 on the outer wall of top block 20 communicate with L-shaped spouting slot 9, the mud enters the other side of L-shaped spouting slot 9 through L-shaped flow guide 22 and enters the space between pipeline body 1 and channel 7, at this time, the pressure of mud at the inlet of L-shaped spouting slot 9 still does work on top block 20, and the elastic potential energy of spring one 15 and the rebounding is in a balanced state, at this time, the diameter of the circle formed by the outside of several stable plates 4 is equal to or less than the diameter of taper ring two 5, and then the grouting between pipeline body 1 and channel 7 is realized; When the advancing of pipeline body 1 in this section is stopped, the grouting is completed, spring one 15 rebounds, on the one hand, pushes stable plate 4 to move away from ring plate 8, so that the outside of stable plate 4 extrudes the inner wall of channel 7, and plays a role in stabilizing the inner wall of channel 7, on the other hand, the movement of stable plate 4 drives slide rod 17 to move vertically, makes push block 19 move horizontally, and then extrudes top block 20 to slide into pipeline body 1, so that L-shaped flow guide 22 and L-shaped spouting slot 9 are dislocated, and the backflow of mud into pipeline body 1 is avoided, thereby solving the problem that in the prior art, the grouting process, the grout directly impacts the soil around the pipeline, the grout disturbs the surrounding soil, the grouting is uneven and the grout leaks, and the frictional resistance during pipe jacking is large.
[0024] Please refer to the accompanying drawings Figure 5 and the accompanying drawings Figure 8The side wall between the stabilizing plate 4 and the ring plate 8 is fixed with a rubber tube 12, the end of the sliding rod 17 away from the ring plate 8 is located in the spring 15, and the spring 15 is located in the rubber tube 12; Specifically, the vertical movement of the stabilizing plate 4 causes a gap between the stabilizing plate 4 and the ring plate 8, which in turn causes the mud between the pipeline body 1 and the channel 7 to enter the ring plate 8 through the gap between the spring 15, the sliding rod 17 and the ring plate 8, thereby interfering with the vertical movement of the stabilizing plate 4. The rubber tube 12 is made of rubber material and can stretch to a certain extent. When the stabilizing plate 4 moves vertically, the spring 15 and the sliding rod 17 are always wrapped in the rubber tube 12, thereby preventing mud from entering the ring plate 8, thereby helping to improve the stability of the vertical movement of the stabilizing plate 4.
[0025] Please refer to the accompanying drawings Figure 8 The side of the sliding rod 17 away from the stabilizing plate 4 is fixed with a lifting block 18, the outer wall of the lifting block 18 is attached to the outer wall of the push block 19, the outer wall of the lifting block 18 and the push block 19 is arc-shaped, and the side of the push block 19 away from the sliding rod 17 is arc-shaped; Specifically, when the stabilizing plate 4 moves in the vertical direction, the sliding rod 17 drives the lifting block 18 to move vertically, and the arc-shaped arrangement of the lifting block 18 interferes with and presses the push block 19, thereby pushing the push block 19 to move horizontally. The arc-shaped arrangement of the push block 19 interferes with the outer wall of the top block 20, thereby pushing the top block 20 to move vertically, thereby realizing the vertical movement of the stabilizing plate 4.
[0026] Please refer to the accompanying drawings Figure 8 The side of the top block 20 away from the pipeline body 1 is fixed with a spring 16, one end of the spring 16 is fixed to the inner wall of the ring plate 8, the side of the push block 19 away from the sliding rod 17 is slidingly connected to the outer wall of the top block 20, and the two sides of the push block 19 are fixed with sliding blocks 23, and the outer wall of the sliding block 23 is slidingly connected to the inner wall of the ring plate 8; Specifically, when the pressure of the slurry is unstable, the top block 20 reciprocates in the vertical direction when grouting, thereby causing the vibration problem of the stabilizing plate 4, which can increase the friction when the pipeline body 1 advances, affecting the construction efficiency; therefore, by arranging the spring two 16 and increasing the vertical sliding distance of the top block 20, the side of the top block 20 away from the pipeline body 1 has slid over the arc surface of the push block 19 before the L-shaped grouting groove 9 and the L-shaped flow guide 22 are communicated, so that the rebound of the spring one 15 no longer causes the arc surface of the push block 19 to extrude the top block 20, causing the vertical movement of the top block 20, and after grouting is completed, the slurry in the pipeline body 1 no longer exerts force on the top block 20, and under the rebound of the spring two 16, the top block 20 slides towards the inside of the pipeline body 1, and the side surface of the top block 20 is separated from the push block 19, and under the rebound of the spring one 15, the stabilizing plate 4 is continuously driven to move away from the ring plate 8, and press the inside of the channel 7, thereby helping to improve the stability of the vertical movement of the stabilizing plate 4.
[0027] Please refer to the accompanying drawings Figure 3 , the accompanying drawings Figure 4 and the accompanying drawings Figure 8 , one side of the L-shaped grouting groove 9 passes through the ring plate 8 away from one side of the conical ring two 5, and the inner wall of the pipeline body 1 is provided with a grouting inlet 21, which is communicated with the L-shaped grouting groove 9. Specifically, the outlet of the L-shaped grouting groove 9 is arranged on the back of the advancing direction of the pipeline body 1, the slurry enters the pipeline body 1 through the grouting inlet 21 on the inner wall of the pipeline body 1, and is then horizontally discharged to the pipeline body 1 and the channel 7 through the L-shaped grouting groove 9, avoiding the impact of the slurry on the inner wall of the channel 7, causing the slurry to disturb the surrounding soil, causing uneven grouting and slurry running, and thereby causing large friction resistance during pipe jacking, affecting construction efficiency.
[0028] Please refer to the accompanying drawings Figure 5 The outer side of the ring plate 8 is fixed with a plurality of supporting blocks 13, and the side of the supporting block 13 away from the ring plate 8 is attached to the inner side of the stabilizing plate 4. Specifically, when the pipeline body 1 advances, the stabilizing plate 4 approaches the ring plate 8 during the process of approaching and attaching, and the slurry impurities between the stabilizing plate 4 and the ring plate 8 make the stabilizing plate 4 and the ring plate 8 unable to completely attach, causing the diameter formed by the stabilizing plate 4 to be larger than the diameter of the conical ring two 5, increasing the friction during the advancing process of the pipeline body 1, and by arranging the supporting block 13, when the stabilizing plate 4 approaches the ring plate 8, the supporting block 13 allows a certain space between the stabilizing plate 4 and the ring plate 8 to accommodate a certain amount of slurry impurities, and when the inner side of the stabilizing plate 4 and the supporting block 13 are attached, the diameter formed by the stabilizing plate 4 is equal to or less than the diameter of the conical ring two 5, thereby helping to improve the construction efficiency of the pipeline body 1.
[0029] Please refer to the accompanying drawings Figure 3 and the accompanying drawings Figure 6The conical ring one 3 is fixed to one side of the ring plate 8 away from the conical ring two 5, and the two sides of the stabilizing plate 4 are respectively slidably connected to the side walls opposite to the conical ring two 5 and the conical ring one 3, and the intercepting assembly 11 is installed between the two stabilizing plates 4, and the intercepting assembly 11 comprises a telescopic pipe 110, one side of the telescopic pipe 110 is fixed to the outer wall of one of the stabilizing plates 4, and the other side of the telescopic pipe 110 is slidably connected to the inner wall of the stabilizing plate 4; Specifically, when the stabilizing plate 4 moves away from the ring plate 8, the side walls between the two sides of the stabilizing plate 4 are respectively in close sliding contact with the conical ring two 5 and the conical ring one 3, so that the large-particle impurities in the soil layer 2 are prevented from entering between the stabilizing plate 4 and the ring plate 8 through the gap between the stabilizing plate 4 and the conical ring one 3 and the conical ring two 5, and the vertical movement of the stabilizing plate 4 is not affected; and the movement of the stabilizing plate 4 drives the telescopic pipe 110 to extend, so that the gap between the two stabilizing plates 4 is covered by the telescopic pipe 110, and the large-particle impurities are prevented from entering between the stabilizing plate 4 and the ring plate 8 through the gap between the two stabilizing plates 4, thereby achieving the interception of the large-particle impurities, and thus the construction efficiency of the pipeline body 1 is improved.
[0030] Please refer to the accompanying drawings Figure 3 and the accompanying drawings Figure 6 The intercepting assembly 11 comprises a sliding plate 113, one side of the sliding plate 113 is fixed to the other side of the telescopic pipe 110, the outer wall around the sliding plate 113 is slidably connected to the inner wall of the other stabilizing plate 4, and the side of the sliding plate 113 away from the telescopic pipe 110 is fixed with a guide rod 112 and a spring three 111, one end of the guide rod 112 away from the sliding plate 113 is slidably connected to the inner wall of the other stabilizing plate 4, and one end of the spring three 111 away from the sliding plate 113 is fixed to the inner wall of the other stabilizing plate 4. Specifically, the telescopic pipe 110 is made of rubber, when the stabilizing plate 4 moves away from the ring plate 8, the gap between the two stabilizing plates 4 increases, and the two stabilizing plates 4 move away from each other in the vertical projection, so that the telescopic pipe 110 pulls the sliding plate 113 to slide on the inner wall of the other stabilizing plate 4, and the guide rod 112 provides stable support for the sliding of the sliding plate 113, thereby realizing the function of the telescopic pipe 110 covering the gap between the two stabilizing plates 4, and the outer wall around the sliding plate 113 and the inner wall of the stabilizing plate 4 are in sealed sliding contact, when the stabilizing plate 4 moves towards the ring plate 8, the spring three 111 is contracted to drive the sliding plate 113 to slide towards the inside of the stabilizing plate 4, and the telescopic pipe 110 is retracted into the stabilizing plate 4 to cooperate with the movement of the stabilizing plate 4, thereby improving the construction efficiency of the pipeline body 1.
[0031] Please refer to the accompanying drawings Figure 2 and the accompanying drawings Figure 5The side wall between the opposite side of the conical ring one 3 and the conical ring two 5 is fixed with the sealing ring 14, the opposite side of the two sealing rings 14 respectively abuts with the two sides of the stable plate 4, the inner side of the conical ring one 3 is fixedly provided with a plurality of duckbill check valves 10, the outer wall of the duckbill check valve 10 penetrates through the two sides of the conical ring one 3; Specifically, through the setting of the sealing ring 14, in the process of the relative sliding of the stable plate 4 and the conical ring one 3 and the conical ring two 5, the mud cannot enter between the stable plate 4 and the ring plate 8 from the gap, thereby helping to improve the sealing effect between the stable plate 4 and the ring plate 8, there is still a small gap between the junction of the two stable plates 4 and the conical ring one 3 or the conical ring two 5, so that water or a small amount of mud can still enter between the stable plate 4 and the ring plate 8, therefore, when the stable plate 4 moves close to the ring plate 8, the stable plate 4 will extrude the space between it and the ring plate 8, so that the air, water or mud flows out through the gap between it and the conical ring one 3 and the conical ring two 5, or through the duckbill check valve 10, thereby further improving the sealing effect between the stable plate 4 and the ring plate 8.
[0032] Workflow: when the pipeline body 1 advances, the mud pushes the top block 20 to move vertically away from the ring plate 8, extrudes the sliding block 23, and then drives the stable plate 4 to move close to the ring plate 8 through the slide rod 17, so that the several stable plates 4 form a diameter equal to or less than the diameter of the conical ring two 5, thereby reducing the frictional resistance in the advancing process of the pipeline body 1; In this process, through the abutting sliding of the two sides of the stable plate 4 and the side wall between the conical ring one 3 and the conical ring two 5, and through the cooperation of the sealing ring 14, and through the contraction of the spring three 111, the slide plate 113 drives the telescopic pipe 110 to retract into the inside of the other stable plate 4, thereby preventing the large particles between the pipeline body 1 and the channel 7 from entering between the stable plate 4 and the ring plate 8, and through the setting of the support block 13, there is a certain space between the stable plate 4 and the ring plate 8, even if water and a small amount of mud enter between the stable plate 4 and the ring plate 8 through the small gap between the junction of the two stable plates 4 and the conical ring one 3 or the conical ring two 5, when the stable plate 4 moves close to the ring plate 8, through the extrusion of the stable plate 4 to the space between them, air, water or mud can still flow out through the gap between it and the conical ring one 3 and the conical ring two 5 or through the duckbill check valve 10, thereby realizing the possibility of avoiding the large particles entering between the stable plate 4 and the ring plate 8; And in this process, by setting the spring two 16 and increasing the vertical sliding distance of the top block 20, before the L-shaped jetting slot 9 and the L-shaped flow guide 22 are connected, the side of the top block 20 away from the pipeline body 1 has already slid through the arc surface of the push block 19, avoiding the vertical reciprocating movement of the stable plate 4 due to unstable slurry pressure, thereby realizing the reduction of friction in the advancing process of the pipeline body 1; When the pipe body 1 stops running, the grouting stops, under the rebound of spring two 16, the push block 20 slides to the inside of the pipe body 1, blocks the L-shaped grouting groove 9, avoids the mud backflow, and through the rebound of spring one 15, the stable plate 4 moves away from the ring plate 8, presses and stabilizes the inner wall of the channel 7, cooperates, thereby solving the problem that in the prior art, the slurry directly impacts the soil around the pipe during grouting, causing the slurry to disturb the surrounding soil, resulting in uneven grouting and slurry running, and further causing the problem of large frictional resistance during pipe jacking.
[0033] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application being defined by the appended claims and their equivalents.
Claims
1. A concrete pipe jacking system for riverside water-rich strata, comprising a soil layer (2), wherein a channel (7) is provided inside the soil layer (2), a jacking head (6) is slidably mounted on the inner wall of the soil layer (2), the outer wall of the jacking head (6) is slidably connected to the inner wall of the channel (7), and a pipe body (1) is attached to one side of the jacking head (6), characterized in that, The outer wall of the pipe body (1) is fixed with a conical ring 2 (5). The side of the conical ring 2 (5) away from the pipe jacking head (6) is fixed with a ring plate (8). The outer side of the ring plate (8) is attached with several stabilizing plates (4). The inner side of the stabilizing plate (4) is fixed with a spring 1 (15) and a sliding rod (17). One end of the spring 1 (15) is fixed inside the ring plate (8). The inner wall of the ring plate (8) is slidably connected with a slider (23). The outer wall of the sliding rod (17) away from the stabilizing plate (4) is attached to the outer wall of the slider (23). One side of the slider (23) is attached with a top block (20). The outer wall of the ring plate (8) is provided with an L-shaped spray groove (9). The outer wall of the top block (20) away from the stabilizing plate (4) is slidably connected to the inner wall of the L-shaped spray groove (9). The outer wall of the top block (20) is provided with an L-shaped guide port (22).
2. The concrete pipe jacking system with slurry balance in water-rich riverside strata according to claim 1, characterized in that, A rubber tube (12) is fixed to the side wall between the stabilizing plate (4) and the ring plate (8). The end of the slide rod (17) away from the ring plate (8) is located inside the spring (15), which is located inside the rubber tube (12).
3. The concrete pipe slurry balance jacking pipe for riverside water-rich strata according to claim 1, characterized in that, A lifting block (18) is fixed on the side of the slide rod (17) away from the stabilizing plate (4). The outer wall of the lifting block (18) and the outer wall of the push block (19) are in contact. The outer wall of the lifting block (18) and the push block (19) in contact is set with an arc surface. The side of the push block (19) away from the slide rod (17) is set with an arc surface.
4. The concrete pipe jacking system with slurry balance in water-rich riverside strata according to claim 3, characterized in that, A spring 2 (16) is fixed on the side of the top block (20) away from the pipe body (1). One end of the spring 2 (16) is fixed to the inner wall of the ring plate (8). The side of the push block (19) away from the slide rod (17) is slidably connected to the outer wall of the top block (20). Slider (23) is fixed on both sides of the push block (19). The outer wall of the slider (23) is slidably connected to the inner wall of the ring plate (8).
5. A concrete pipe jacking system with slurry balance in a riverside, water-rich stratum, as described in claim 1, is characterized in that... One side of the L-shaped spray trough (9) passes through the ring plate (8) away from the side of the cone ring (5), and the inner wall of the pipe body (1) is provided with a grout inlet (21), which is connected to the L-shaped spray trough (9).
6. A concrete pipe jacking system with slurry balance in a riverside, water-rich stratum, as described in claim 1, is characterized in that... Multiple support blocks (13) are fixed on the outer side of the ring plate (8), and the side of the support block (13) away from the ring plate (8) is attached to the inner side of the stabilizing plate (4).
7. A concrete pipe jacking system with slurry balance in a riverside, water-rich stratum, as described in claim 1, is characterized in that... The ring plate (8) is fixed with a cone ring (3) on the side away from the cone ring (5). The two sides of the stabilizing plate (4) are slidably connected to the opposite side walls of the cone ring (5) and the cone ring (3), respectively. An interception assembly (11) is installed between the two stabilizing plates (4). The interception assembly (11) includes a telescopic tube (110). One side of the telescopic tube (110) is fixed to the outer wall of one of the stabilizing plates (4), and the other side of the telescopic tube (110) is slidably connected to the inner wall of the stabilizing plate (4).
8. A concrete pipe jacking system with slurry balance in a riverside, water-rich stratum, as described in claim 7, is characterized in that... The interception assembly (11) includes a sliding plate (113), one side of which is fixed to the other side of the telescopic tube (110). The outer walls of the sliding plate (113) are slidably connected to the inner wall of another stabilizing plate (4). A guide rod (112) and a spring three (111) are fixed on the side of the sliding plate (113) away from the telescopic tube (110). The end of the guide rod (112) away from the sliding plate (113) is slidably connected to the inner wall of another stabilizing plate (4). The end of the spring three (111) away from the sliding plate (113) is fixed to the inner wall of another stabilizing plate (4).
9. A concrete pipe jacking system with slurry balance in a riverside, water-rich stratum, as described in claim 7, is characterized in that... A sealing ring (14) is fixed on the sidewall between the opposite sides of the first cone ring (3) and the second cone ring (5). The opposite sides of the two sealing rings (14) are respectively attached to the two sides of the stabilizing plate (4). A plurality of duckbill one-way valves (10) are fixedly installed on the inner side of the first cone ring (3). The outer wall of the duckbill one-way valve (10) passes through the two sides of the first cone ring (3).
10. A construction method for concrete pipe jacking with slurry balance in water-rich riverside strata, characterized in that, The method for using a concrete pipe slurry balance jacking system in a water-rich stratum near a river, as described in any one of claims 1-9, comprises the following steps: S1. The pipe jacking machine pushes the pipe jacking head (6) to open a channel (7) in the soil layer (2), and places the pipe body (1) at the entrance of the channel (7) so that one side of the pipe body (1) and one side of the pipe jacking head (6) are attached and connected. The pipe jacking machine pushes the pipe body (1) and the pipe jacking head (6) forward. S2. During the movement of the pipeline body (1), grouting begins. The slurry enters the L-shaped spray trough (9) through the slurry inlet (21) and pushes the top block (20) upward, causing the slide rod (17) to drive the stabilizing plate (4) to move closer to the ring plate (8). At the same time, the slurry is guided by the L-shaped spray trough (9) and the L-shaped guide port (22) so that the slurry is in a direction parallel to and opposite to the direction of movement. S3. After the pipeline body (1) stops moving, the grouting ends, the top block (20) releases the limit on the slide rod (17), so that the spring (15) pushes the stabilizing plate (4) to press and stabilize the inner wall of the channel (7), thus completing the construction of this section of the pipeline body (1).