Pipe jacking sediment treatment device and sediment treatment method

Abstract

The present invention relates to the technical field of trenchless pipe jacking engineering, and in particular to a pipe jacking sediment treatment device and a sediment treatment method. The pipe jacking sediment treatment device provided by the present invention comprises a pipe segment composed of at least one pipe section, the pipe segment is provided with a grouting hole penetrating its pipe wall, the outer wall of the pipe segment is provided with a slag chute, the extension direction of the slag chute is consistent with the extension direction of the pipe segment, and the slag chute is suitable for being at the bottom of the pipe segment when the pipe segment is jacked, so that the sediment accumulates inside the slag chute. The pipe jacking sediment treatment device provided by the present invention, after the slag chute is opened in the pipe segment, a large space is left between the slag chute and the inner wall of the tunnel, so that the residual residue material is not easy to be deposited and formed in a short time, and can be carried away by the mud, which greatly reduces the probability of the residue being deposited at the bottom of the pipe segment, making it difficult for the pipe segment to be jacked, or even getting stuck in the tunnel.

Description

Technical Field

[0001] The present invention relates to the technical field of trenchless pipe jacking engineering, and in particular to a pipe jacking sediment treatment device and a sediment treatment method. Background Art

[0002] As an important parameter in the design and construction of pipe jacking projects, the jacking force is theoretically composed mainly of the friction resistance around the pipe and the head resistance of the cutterhead. For long-distance or large-section pipe jacking, the friction resistance around the pipe often has a greater impact on the jacking force. Therefore, effectively reducing the friction resistance is the key to the smooth, efficient and safe completion of the project.

[0003] In the existing technology, the outer diameter difference between the pipe jacking machine and the subsequent pipe segments is designed to form an over-excavation gap around the pipe. During the jacking process, the crushed residual materials flow with the circulating mud in the over-excavation gap and are eventually discharged from the pipeline. However, some of the residual materials are not discharged with the circulating mud and settle at the bottom of the pipe segment. Under the influence of factors such as the axis deviation of the pipe segment jacking trajectory, longitudinal slope jacking, and shutdown and re-jacking, the phenomenon of crushed residual materials gathering at the bottom of the pipe becomes more serious and common. Once residual materials accumulate between the outer wall of the pipe segment and the inner wall of the tunnel, the frictional resistance around the pipe will increase sharply. In severe cases, the pipe segment will be stuck, which will have an adverse effect on the normal jacking of the pipe. If the circulating mud is still unable to clear the accumulated residual materials, the only option is to open the pipe and dredge the blocked area, which is time-consuming and labor-intensive, and delays the construction progress. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the crushed residue materials are easily accumulated at the bottom of the pipe section, resulting in the pipe section being stuck and unable to be pushed forward normally, thereby providing a pipe jacking sediment treatment device and sediment treatment method.

[0005] The sludge treatment device for pipe jacking provided by the present invention includes a pipe section composed of at least one pipe joint, the pipe section is provided with a grouting hole penetrating its pipe wall, the outer wall of the pipe section is provided with a sludge chute, the extension direction of the sludge chute is consistent with the extension direction of the pipe section, and the sludge chute is suitable for being at the bottom of the pipe section when the pipe section is jacked, so that the sediment accumulates inside the sludge chute.

[0006] Optionally, it also includes at least two slag discharge faucets, which are arranged on the inner wall of the pipe section, and the pipeline of the slag discharge faucet passes through the pipe wall of the pipe section and is connected to the slag chute. The slag discharge faucet is provided with a valve, and the slag discharge faucet is suitable for connecting with the slag discharge equipment.

[0007] Optionally, at least two slag-stopping assemblies are further included, each of which includes a slag-stopping plate, which is slidably connected to the pipe wall of the pipe section. The slag-stopping plate has an extended state in which it extends out and covers the slag chute and is suitable for being tightly attached to the inner wall of the tunnel, and a retracted state in which it does not extend out of the bottom of the slag chute. The two slag-stopping assemblies are connected to form a partition section, and at least two slag discharge faucets are provided in the partition section.

[0008] Optionally, the slag stop assembly also includes a base and a connecting rod. The base is sealed and fixed to the pipe wall of the pipe section and is located between the inner wall of the pipe section and the slag chute. A connecting groove is provided inside the base, and the connecting groove is connected to the slag chute. The slag stop plate is slidably arranged in the connecting groove. A first threaded hole is provided at the bottom of the connecting groove, which passes through the base. The connecting rod is threadedly connected to the first threaded hole. One end of the connecting rod extends outward from the inner wall of the pipe section, and the other end extends into the base and is rotatably connected to the slag stop plate. The connecting rod is suitable for driving the slag stop plate to slide in the base when rotating relative to the base.

[0009] Optionally, a mounting groove connecting the inner space of the pipe section with the slag chute is opened on the pipe wall of the pipe section, and the base extends into the mounting groove and is sealed and fixed to the mounting groove.

[0010] Optionally, the pipeline of the slag discharge faucet is obliquely passed through the pipe wall of the pipe section, and in the direction from the inner wall of the pipe section to the outer wall of the pipe section, the pipeline of the slag discharge faucet gradually moves away from the nearest slag baffle.

[0011] Optionally, at least three groups of stress sensing components are arranged in the pipe section along the extension direction of the pipe section, and the stress sensing components are suitable for detecting the axial stress applied to the pipe section at the location where the stress sensing components are arranged. Adjacent stress sensing components constitute a monitoring section, and each monitoring section is located in a partition section connected by two slag-blocking components. The jacking pipe sediment processing device also includes a data control terminal, and the stress sensing components are communicatively connected to the data control terminal.

[0012] Optionally, the stress sensing assembly is composed of at least one stress sensor, the stress sensor including a steel bar stress gauge and a mounting base, at least two of the mounting bases are fixedly connected to the main reinforcement of the pipe section, a steel bar stress gauge is fixed between the two mounting bases, and the steel bar stress gauge is communicatively connected to the data control terminal;

[0013] And / or the stress sensing assembly consists of at least two stress sensors, and the stress sensors of a group of the stress sensing assemblies are evenly arranged along the circumference of the pipe section.

[0014] The sediment treatment method of the pipe jacking sediment treatment device provided by the present invention comprises the following steps:

[0015] S1. Determine the size of the slag chute on the outer wall of the pipe segment based on the design requirements of the pipe diameter and wall thickness of the pipe segment. Install slag retaining components and / or slag discharge taps on some of the pipe segments. The pipe segment formed by connecting the pipe segments includes at least two slag discharge taps and two slag retaining components, respectively, installed at both ends of the segment connected by the two slag discharge taps.

[0016] S2. Carry out flushing and slag removal operations: connect the slurry inlet pipe and the slag discharge pipe of the slag discharge equipment to a slag discharge faucet respectively, open the valves of the two slag discharge faucets, start the slag discharge equipment and inject flushing slurry, then extend the slag retaining plates of the two slag retaining assemblies downward to the inner wall of the tunnel to form a partition section, and the two slag discharge faucets connected to the slag discharge equipment are both located within the partition section;

[0017] or extending the slag retaining plates of the two slag retaining assemblies downward to the inner wall of the tunnel to form a partition section, then connecting the slurry inlet pipe and the slag discharge pipe of the slag discharge equipment to a slag discharge tap respectively, the two slag discharge taps connected to the slag discharge equipment are both located in the partition section, opening the valves of the two slag discharge taps, starting the slag discharge equipment and injecting flushing slurry;

[0018] S3. End the flushing and slag removal operation: turn off the switch of the slag discharge equipment, close the valve of the slag discharge faucet, retract the slag baffle, and remove the slurry inlet pipe and the slag discharge pipe.

[0019] Optionally, before the step S2, the method further includes: in the step S1, some of the pipe segments are further provided with stress sensing components, the stress sensing components transmit data to a data control terminal, the pipe segment formed by connecting the pipe segments includes at least three stress sensing components in its extension direction, and adjacent stress sensing components constitute a monitoring section. In the order of jacking into the tunnel, the monitoring sections are successively recorded as the first monitoring section, the second monitoring section, ... the Nth monitoring section, the length of the first monitoring section is recorded as L1, the stress difference between the two stress sensing components in the first monitoring section is recorded as ΔN1, the length of the second monitoring section is recorded as L2, the stress difference between the two stress sensing components in the second monitoring section is recorded as ΔN2, ... the length of the Nth monitoring section is recorded as L n The stress difference between the two stress sensing components in the Nth monitoring section is recorded as △N n ;

[0020] The monitoring section is located within the isolation section, and the frictional resistance per unit length f of the monitoring section is calculated. k , and its calculation formula is:

[0021]

[0022] Where, f k Represents the friction resistance per unit length of the kth monitoring section, in kN / m;

[0023] △N k Represents the axial stress difference of the pipe section in the kth monitoring section, in kN;

[0024] L k Represents the length of the kth monitoring section, in meters;

[0025] The tunnel is divided into several formation sections, and the data control terminal records the unit length friction resistance of each monitoring section entering the same formation section. When the unit length friction resistance of a monitoring section in the formation section reaches a preset condition, according to step S2, a flushing and slag removal operation is carried out on the partition section where the monitoring section is located.

[0026] The present invention has the following advantages:

[0027] 1. The sludge treatment device for pipe jacking provided by the present invention has a grouting hole penetrating the pipe wall of the pipe section, and mud is injected into the space between the pipe section and the tunnel through the grouting hole. The residue between the pipe section and the tunnel is discharged from the tunnel along with the mud circulation system. A sludge chute is provided on the outer wall of the pipe section, and the extension direction of the sludge chute is consistent with the extension direction of the pipe section. When the pipe section is jacked, the sludge chute is located at the bottom of the pipe section. The residue materials formed by the frontal excavation and the friction around the pipe are not completely discharged along with the mud circulation system and are deposited in the sludge chute at the bottom of the pipe section. Compared with the pipe section without the outer wall groove, after the sludge chute is provided in the pipe section, a larger space is left between the sludge chute and the inner wall of the tunnel, so that the residual residue materials are not easily deposited and extruded into shape in a short time, and are more easily carried away by the mud, thereby greatly reducing the probability of residue depositing at the bottom of the pipe section, making it difficult to jack the pipe section or even getting stuck in the tunnel.

[0028] 2. The slag treatment device for the top pipe provided by the present invention has a slag discharge tap arranged on the inner wall of the pipe section, and its pipeline passes through the pipe wall of the pipe section and is connected to the slag chute. The slag discharge tap is provided with a valve to control the in and out of the flushing circulation slurry. The slag discharge tap not only has the grouting function of a general grouting hole, but can also cooperate with the slag discharge equipment to specifically flush the slag chute at the bottom of the pipe section, and disperse and suck out the sediment accumulated in the slag chute.

[0029] 3. The slag treatment device for pipe jacking provided by the present invention is provided with at least two slag blocking assemblies on the pipe section, and the slag blocking assemblies include slag blocking plates, which are slidably connected to the pipe wall of the pipe section, can be extended and block the slag chute in the working state, and abut against the inner wall of the tunnel. The two slag blocking assemblies can form a relatively closed partition section when working, and at least two slag discharge taps are provided in the partition section to disperse the sediment accumulated in the partition section. The extended slag blocking plates can effectively prevent the sediment from being transferred from the partition section to other sections during the flushing process, thereby improving the flushing circulation efficiency of the slag discharge tap in the partition section, and is conducive to flushing the sediment accumulated in the partition section so that it can be brought out by the flushing circulating slurry or the mud in the subsequent jacking process. The slag blocking plates do not extend from the bottom of the slag chute when they are retracted, and will not interfere with the normal operation of the slag chute during the jacking process.

[0030] 4. The sludge treatment device for top pipes provided by the present invention has a base that is sealed and fixed to the pipe wall of the pipe section, and the base is located between the inner wall of the pipe section and the sludge chute. A connecting groove that is connected to the sludge chute is provided inside the base, and a first threaded hole that passes through the base is provided at the bottom of the connecting groove. A connecting rod is threadedly connected to the first threaded hole, and one end of the connecting rod extends outward from the inner wall of the pipe section, and the other end extends into the base and is rotatably connected to the sludge stop plate. The staff in the pipe section can control the extension and retraction of the sludge stop plate by rotating the connecting rod, and judge whether there is sediment directly below the sludge stop plate when it is extended, and the type of sediment, so as to facilitate the subsequent sediment treatment process.

[0031] 5. The slag treatment device for the top pipe provided by the present invention has a pipeline of a slag discharge faucet that obliquely penetrates the pipe wall of the pipe section, which is beneficial for the slag discharge faucet to flush the slag chute. In the direction from the inner wall of the pipe section to the outer wall of the pipe section, the pipeline of the slag discharge faucet gradually moves away from the nearest slag retaining plate. When the two slag retaining plates are extended to form a partition section, the pipelines of a group of slag discharge faucets in the partition section are arranged to face each other, which is beneficial for flushing the sediment between the group of slag discharge faucets.

[0032] 6. The jacking sediment processing device provided by the present invention has at least three groups of stress sensing components arranged in the pipe section along the extension direction of the pipe section. The stress sensing components are suitable for detecting the axial stress of the pipe section at the location where the stress sensing components are arranged. Adjacent stress sensing components constitute a monitoring section. The total resistance received by the monitoring section can be obtained through feedback data from the two groups of stress sensing components. When the length of the monitoring section is known, the total resistance of the monitoring section is divided by the length of the monitoring section to obtain the unit length friction resistance of the monitoring section in the formation section where it is located. When the subsequent monitoring section passes through the formation section, it can be determined whether there is sediment accumulation in the monitoring section by comparing the unit length friction resistance. The monitoring section is located in a partition section connected by two slag retaining components. When sediment cleaning work needs to be carried out on the monitoring section, it is only necessary to extend the slag retaining plate of the corresponding slag retaining component and carry out targeted flushing work on the monitoring section. The sediment accumulation in the pipe section is easy to check and the sediment can be flushed in a targeted manner. The slag cleaning efficiency is high, which can prevent pipe joints from being blocked during the jacking process and improve construction efficiency.

[0033] 7. The jacking pipe sediment treatment device provided by the present invention has a mounting base fixed to the side wall of the main reinforcement of the pipe section, and a steel bar stress gauge is fixed between the two mounting bases to realize the parallel connection of the steel bar stress gauge and the main reinforcement, so as to monitor the axial stress of the pipe section in real time without damaging the original mechanical properties of the pipe section.

[0034] 8. The present invention provides a sediment treatment method for the sludge treatment device of the jacking pipe. The pipe sections that make up the pipe section are all provided with sludge chutes. The size of the sludge chutes depends on the size of the pipe sections, ensuring that the pipe sections after grooving can meet the strength requirements of construction. The sludge chute is located at the bottom of the pipe section during the jacking process, leaving a large space between it and the inner wall of the tunnel, so that the remaining residue materials are not easily deposited and formed in a short time and can be carried away by the mud, which greatly reduces the occurrence of pipe section blockage. At the same time, the sludge chute can gather sediment to the greatest extent, which is convenient for subsequent flushing and slag removal operations. The pipe section also includes at least two slag discharge faucets, and two slag retaining components respectively arranged at both ends of the section connected by the two slag discharge faucets. When sediment that cannot be carried away by the mud accumulates in the sludge chute between the two slag retaining components, a partition section can be formed by extending the slag retaining plate, and the sediment in the partition section can be centrally flushed and slag removed, with high slag removal efficiency.

[0035] 9. The present invention provides a sediment treatment method for a pipe jacking sediment treatment device. The pipe section includes at least three stress sensing components along its extension direction, with adjacent stress sensing components forming a monitoring section. During the jacking process, the data control terminal can obtain the unit length friction resistance of each monitoring section in the formation section in which it is located. Because the shape and properties of the jacked formation section have not changed, under normal circumstances, when different monitoring sections in the pipe section pass through the same formation section, and the grouting process and pipe section axis deviation remain essentially unchanged, the unit length friction resistance measured by different monitoring sections in the formation section is similar. By comparing the unit length friction resistance, it can be determined whether there is sediment accumulation in the monitoring section. Multiple groups of stress sensing components are arranged throughout the pipeline, making real-time monitoring of the entire pipeline more accurate and efficient, saving manpower, material and financial resources, and enabling comprehensive and scientific understanding and control of the actual working status of the pipe jacking. At the same time, the data control terminal monitors the status of the section in real time, and cooperates with the slag retaining components and slag discharge faucets in the pipeline to accurately and efficiently handle the sediment in the abnormal monitoring section, reducing the friction resistance around the pipe, so that the jacking pipe can be pushed forward normally, and greatly reducing the construction cost and shortening the construction period. It has the advantages of safety, efficiency, economy, reliability, low carbon and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 Schematic diagram of the structure of a pipe segment of a pipe jacking sediment treatment device according to an embodiment of the present invention;

[0038] Figure 2 for Figure 1 A cross-sectional view of a pipe segment of a pipe jacking sediment treatment device;

[0039] Figure 3 for Figure 2 AA cross-section diagram;

[0040] Figure 4 for Figure 2 BB cross-section diagram;

[0041] Figure 5 Schematic diagram of the structure of the slag blocking assembly of the pipe jacking sediment treatment device according to an embodiment of the present invention;

[0042] Figure 6 Schematic diagram of the flushing and slag removal operation of the pipe jacking sediment treatment device according to an embodiment of the present invention;

[0043] Figure 7 Schematic diagram of the monitoring section layout of the pipe jacking sediment treatment device according to an embodiment of the present invention.

[0044] Description of reference numerals:

[0045] 10. Pipe joint; 11. Grouting hole; 12. Slag chute; 13. Mounting groove; 131. Second threaded hole; 14. Main reinforcement; 20. Slag discharge faucet; 21. Faucet mouth; 22. Valve; 30. Slag retaining assembly; 31. Slag retaining plate; 32. Base; 321. Connecting groove; 322. First threaded hole; 33. Connecting rod; 331. Handwheel; 40. Stress sensing assembly; 41. Rebar stress gauge; 42. Mounting base; 43. Signal extension line; 44. Signal acquisition box; 50. Data control terminal; 60. Slurry pump truck; 61. Slurry inlet pipe; 62. Slag discharge pipe; 70. Starting well; 71. Soil; 72. Sediment; J1. First monitoring section; J2. Second monitoring section; J3. Third monitoring section; G2. Second partition section; G3. Third partition section. DETAILED DESCRIPTION

[0046] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0049] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] Example

[0051] refer to Figure 1-Figure 7 The pipe jacking sediment treatment device provided in an embodiment of the present invention includes a pipe section composed of at least one pipe segment 10, the pipe section is provided with a grouting hole 11 penetrating the pipe wall, and the outer wall of the pipe section is provided with a slag chute 12. The extension direction of the slag chute 12 is consistent with the extension direction of the pipe section. The slag chute 12 is suitable for being at the bottom of the pipe section when the pipe section is jacked, so that the sediment 72 is accumulated inside the slag chute 12.

[0052] In this embodiment, the pipe section is provided with a grouting hole 11 which passes through the pipe wall. The slurry is injected into the space between the pipe section and the tunnel through the grouting hole 11. The residue between the pipe section and the tunnel is discharged from the tunnel along with the slurry circulation system. The outer wall of the pipe section is provided with a slag chute 12. The extension direction of the slag chute 12 is consistent with the extension direction of the pipe section. When the pipe section is pushed forward, the slag chute 12 is located at the bottom of the pipe section. The residue materials formed by the head-on excavation and the friction around the pipe are not completely discharged along with the slurry circulation system and are deposited in the slag chute 12 at the bottom of the pipe section 10. Compared with the pipe section without the outer wall groove, after the pipe section is provided with the slag chute 12, a larger space is left between the slag chute 12 and the inner wall of the tunnel, so that the residual residue materials are not easily deposited and extruded in a short time and are more easily carried away by the slurry, which greatly reduces the probability of the residue being deposited at the bottom of the pipe section, making it difficult for the pipe section 10 to be pushed forward or even getting stuck in the tunnel.

[0053] In this embodiment, an over-excavation gap is formed between the soil 71 and the pipe segment 10. Under ideal conditions, the over-excavation gap is filled with mud around the pipe to lubricate, reduce resistance and support the pipe segment 10. Residual materials that are not completely discharged from the circulating mud can accumulate between the slag chute 12 and the bottom of the tunnel.

[0054] In this embodiment, the size of the slag chute 12 depends on the size of the pipe segment 10, including the wall thickness and outer wall size of the pipe segment 10. As a preferred embodiment, the maximum trough depth of the slag chute 12 does not exceed one-third of the wall thickness of the pipe segment 10, which has little effect on the structural strength of the pipe segment 10, ensuring that the pipe segment 10 can be pushed forward normally.

[0055] In this embodiment, the shape of the slag chute 12 is not limited. As one embodiment, the bottom of the slag chute 12 is a plane; as another embodiment, the cross-section of the slag chute 12 is an arc.

[0056] In this embodiment, the number and arrangement of the grouting holes 11 are not specifically limited. As a specific implementation method, refer to Figure 1There are 6 grouting holes 11 circumferentially arranged at the front end of the pipe section 10 in the pipe section, which are evenly distributed circumferentially around the central axis of the pipe section 10 to meet the construction requirements of jacking lubrication grouting and secondary grouting.

[0057] On the basis of the above embodiment, in a preferred embodiment, the top pipe sediment processing device further includes at least two slag taps 20, Figure 2 and Figure 4 The slag discharge faucet 20 is set on the inner wall of the pipe section. The pipeline of the slag discharge faucet 20 passes through the pipe wall of the pipe section and is connected with the slag chute 12. The slag discharge faucet 20 is provided with a valve 22. The slag discharge faucet 20 is suitable for connecting with the slag discharge equipment.

[0058] In this embodiment, the slag discharge faucet 20 is arranged on the inner wall of the pipe section, and its pipeline passes through the pipe wall of the pipe section and is connected to the slag chute 12. The slag discharge faucet 20 is provided with a valve 22, which can control the in and out of the flushing circulation slurry. The slag discharge faucet 20 not only has the grouting function of the general grouting hole 11, but also can cooperate with the slag discharge equipment to specifically flush the slag chute 12 at the bottom of the pipe section, and disperse and suck out the sediment 72 accumulated in the slag chute 12.

[0059] In this embodiment, the slag discharge faucet 20 is fixed to the pipe segment 10 . To avoid interfering with the activities of the staff and other processes, the faucet opening 21 of the slag discharge faucet 20 should be close to the inner wall of the pipe segment 10 .

[0060] As a preferred embodiment, the slag discharge faucet 20 is made entirely of high-strength stainless steel material to meet its strength and rust-proof requirements.

[0061] On the basis of the above embodiment, in a preferred embodiment, the top pipe sludge treatment device also includes at least two slag blocking assemblies 30, the slag blocking assembly 30 includes a slag blocking plate 31, the slag blocking plate 31 is slidably connected to the pipe wall of the pipe section, the slag blocking plate 31 has an extended state that extends and blocks the slag chute 12 and is suitable for being tightly attached to the inner wall of the tunnel, and a contracted state that does not extend outward from the bottom of the slag chute 12. The two slag blocking assemblies 30 are connected to form a partition section, and at least two slag discharge faucets 20 are provided in the partition section.

[0062] In this embodiment, at least two slag stopping assemblies 30 are provided on the pipe section, and the slag stopping assembly 30 includes a slag stopping plate 31, which is slidably connected to the pipe wall of the pipe section and can be extended and block the slag chute 12 in the working state, and abut against the inner wall of the tunnel. The two slag stopping assemblies 30 can form a relatively closed partition section when working, and at least two slag discharge taps 20 are provided in the partition section. The extended slag stopping plate 31 can effectively prevent the sediment 72 from being transferred from the partition section to other sections during the flushing process, thereby improving the flushing cycle efficiency of the slag discharge tap 20 in the partition section, and is conducive to flushing out the sediment 72 accumulated in the partition section so that it can be brought out by the flushing circulating slurry or the mud introduced during the subsequent jacking process. The slag stopping plate 31 does not extend from the bottom of the slag chute 12 when it shrinks, and will not interfere with the normal operation of the slag chute 12 during the jacking process.

[0063] It should be noted that the partition section formed by the two slag retaining assemblies 30 during operation is relatively closed, and part of the flushing circulating slurry and the dispersed sediment 72 can still escape from both sides of the slag retaining plate 31 in the tunnel. This part of the residue can be brought out by the mud introduced during the jacking process and does not affect the normal jacking work.

[0064] As a preferred embodiment, in order to improve the partition effect of the slag blocking plate 31, refer to Figure 2 and Figure 3 The end surface of the slag blocking plate 31 that is suitable for contacting the inner wall of the tunnel is a curved surface.

[0065] The slag stopper 31 is a hydraulic cylinder that is provided with a plurality of support members 32, 33 and 34, and the support members 33 are connected to each other by a plurality of support members 32. The support members 33 are connected to each other by a plurality of support members 32. Figure 5The slag stopping assembly 30 also includes a base 32 and a connecting rod 33. The base 32 and the pipe wall of the pipe section are sealed and fixed, and are located between the inner wall of the pipe section and the slag chute 12. A connecting groove 321 is provided inside the base 32, and the connecting groove 321 is communicated with the slag chute 12. The slag stopping plate 31 is slidably arranged in the connecting groove 321. The bottom of the connecting groove 321 is provided with a first threaded hole 322 that penetrates the base 32. The connecting rod 33 is threadedly connected to the first threaded hole 322. One end of the connecting rod 33 extends outward from the inner wall of the pipe section, and the other end extends into the base 32 and is rotatably connected to the slag stopping plate 31. The connecting rod 33 is suitable for driving the slag stopping plate 31 to slide in the base 32 when rotating relative to the base 32. Grease can be applied between the connecting rod 33 and the slag stopping plate 31, and between the slag stopping plate 31 and the connecting groove 321.

[0066] In this embodiment, the base 32 is sealed and fixed to the pipe wall of the pipe section. The base 32 is located between the inner wall of the pipe section and the slag chute 12. A connecting groove 321 is provided inside the base 32 to communicate with the slag chute 12. A first threaded hole 322 is provided at the bottom of the connecting groove 321, which passes through the base 32. The connecting rod 33 is threadedly connected to the first threaded hole 322. One end of the connecting rod 33 extends outward from the inner wall of the pipe section, and the other end extends into the base 32 and is rotatably connected to the slag stop plate 31. The staff in the pipe section can control the extension and retraction of the slag stop plate 31 by rotating the connecting rod 33, and judge whether there is sediment 72 directly below the slag stop plate 31 when it is extended, and the type of sediment 72, so as to facilitate the subsequent sediment treatment process.

[0067] For further reference, Figure 5 A hand wheel 331 is installed at one end of the connecting rod 33 extending outward from the inner wall of the pipe section to facilitate operation by the staff.

[0068] On the basis of the above embodiment, in a preferred embodiment, the pipe wall of the pipe section is provided with a mounting groove 13 connecting its internal space with the slag chute 12, and the base 32 extends into the mounting groove 13 and is sealed and fixed with the mounting groove 13. For details, refer to Figure 5 The mounting groove 13 is connected to the inner space of the pipe section through the second threaded hole 131. The outer wall of the base 32 is correspondingly provided with an external thread adapted to the second threaded hole 131. The base 32 is threadedly connected to the pipe section.

[0069] In this embodiment, a mounting groove 13 is preset on the pipe wall of a portion of the pipe section 10. When the slag blocking assembly 30 needs to be installed on the pipe section 10, it is only necessary to seal and fix the base 32 of the slag blocking assembly 30 in the mounting groove 13, which makes assembly efficient and convenient.

[0070] In this embodiment, there is no specific limitation on the number and structure of the pipe segments 10 constituting the pipe section, and it is sufficient to ensure that the composed pipe segment has at least two slag-stopping components 30, and at least two slag-discharging taps 20 are provided in the connected partition section. As one embodiment, the pipe segment is composed of only one pipe segment 10, and at least two slag-stopping components 30 and at least two slag-discharging taps 20 are provided in the pipe segment 10; as another embodiment, the pipe segment is composed of multiple pipe segments 10, and the pipe segments 10 constituting the pipe segment can be special pipe segments 10 containing slag-stopping components 30 and / or slag-discharging taps 20, or can be ordinary pipe segments 10 that do not contain either slag-stopping components 30 or slag-discharging taps 20. The length, number, and position of the partition section in the pipe segment can be flexibly adjusted according to the number, structure, and arrangement of the pipe segments 10.

[0071] As a preferred embodiment, refer to Figure 1 and Figure 2 The pipeline of the slag discharge faucet 20 is inclined to penetrate the wall of the pipe section, and in the direction from the inner wall of the pipe section to the outer wall of the pipe section, the pipeline of the slag discharge faucet 20 gradually moves away from the nearest slag baffle 31. Specifically, the angle between the pipeline of the slag discharge faucet 20 and the axial direction of the pipe section is 45°.

[0072] In this embodiment, the pipeline of the slag discharge faucet 20 is inclined to penetrate the pipe wall of the pipe section, which is beneficial for the slag discharge faucet 20 to flush the slag chute 12. In the direction from the inner wall of the pipe section to the outer wall of the pipe section, the pipeline of the slag discharge faucet 20 gradually moves away from the nearest slag retaining plate 31. When the two slag retaining plates 31 are extended to form a partition section, the pipelines of a group of slag discharge faucets 20 in the partition section are arranged to face each other, which is beneficial for flushing the sediment 72 between the group of slag discharge faucets 20.

[0073] On the basis of the above embodiment, in a preferred embodiment, at least three groups of stress sensing components 40 are arranged in the pipe section along the extension direction of the pipe section. The stress sensing components 40 are suitable for monitoring the axial stress of the pipe section at the location where the stress sensing components 40 are set. Adjacent stress sensing components 40 constitute a monitoring section. Each monitoring section is located in a partition section connected by two slag blocking components 30. The jacking sludge processing device also includes a data control terminal 50. The stress sensing component 40 is communicatively connected to the data control terminal 50.

[0074] In this embodiment, at least three groups of stress sensing components 40 are arranged in the pipe section along the extension direction of the pipe section. The stress sensing components 40 are suitable for detecting the axial stress of the pipe section at the location where the stress sensing components 40 are arranged. Adjacent stress sensing components 40 constitute a monitoring section. The total resistance experienced by the monitoring section can be obtained through the feedback data of the two groups of stress sensing components 40. When the length of the monitoring section is known, the total resistance of the monitoring section is divided by the length of the monitoring section to obtain the unit length friction resistance of the monitoring section in the formation section. Subsequent monitoring When the measuring section passes through the formation section, by comparing the friction resistance per unit length, it can be determined whether there is sediment 72 accumulation in the monitoring section. The monitoring section is located in a partition section connected by two slag retaining components 30. When the sediment 72 needs to be cleaned in the monitoring section, it is only necessary to extend the slag retaining plate 31 of the corresponding slag retaining component 30 and carry out targeted flushing of the monitoring section. The accumulation of sediment 72 in the pipe section is easy to check, and the sediment 72 can be flushed in a targeted manner. The slag cleaning efficiency is high, which can prevent the pipe section 10 from being blocked during the pipe jacking process, thereby improving construction efficiency.

[0075] In this embodiment, the number of stress sensors in a set of stress sensing components 40 is not specifically limited. It can be that a set of stress sensing components 40 contains only one stress sensor; Figure 1 and Figure 7 Alternatively, a group of stress sensing components 40 may include multiple stress sensors. The stress sensors of a group of stress sensing components 40 are located at the same cross-section of the pipe section and are evenly arranged along the circumference of the pipe section, so that the measured data is more reliable. As a specific implementation method, a group of stress sensing components 40 includes 4 stress sensors. The stress sensors are located at the same cross-section of the pipe section and are evenly arranged along the circumference of the pipe section.

[0076] In this embodiment, the type of the stress sensing component 40 is not specifically limited, and it is sufficient to be able to detect the axial stress on the pipe section at the location where the stress sensing component 40 is set. As a preferred embodiment, reference is made to Figure 2 The stress sensor includes a steel bar stress gauge 41 and a mounting base 42. At least two mounting bases 42 are fixedly connected to the main reinforcement 14 of the pipe section. A steel bar stress gauge 41 is fixed between the two mounting bases 42. The steel bar stress gauge 41 is communicatively connected to the data control terminal 50. Specifically, the mounting base 42 can be fixed to the main reinforcement 14 of the pipe section by binding or welding.

[0077] In this embodiment, the mounting base 42 is fixed to the side wall of the main reinforcement 14 of the pipe section, and the steel bar stress gauge 41 is fixed between the two mounting bases 42 to realize the parallel connection of the steel bar stress gauge 41 and the main reinforcement 14, thereby monitoring the axial stress of the pipe section in real time without destroying the original mechanical properties of the pipe section 10.

[0078] In this embodiment, in order to improve the safety of the pipe jacking operation, the steel bar stress gauge 41 can be pre-buried in the pipe wall of the pipe section, and its signal extension line 43 extends from the pipe wall.

[0079] In this embodiment, the stress sensor can reflect the stress state of the cross section of the pipe segment 10. Taking the steel bar stress gauge 41 as an example, the measurement data of the steel bar stress gauge 41 before the pipe segment 10 is lowered and jacked is used as the initial value. The difference between the subsequent monitoring value and the initial value is the actual steel bar stress at the monitoring position during the construction phase. The measured actual steel bar stress can be used to calculate the axial force N of the cross section of the pipe segment 10 according to the following formula:

[0080] N=σjs(A c E c / s + s )

[0081] Where, σ js is the actual steel stress obtained by the steel stress gauge 41 on the cross section, kN / mm 2 ;

[0082] A c is the concrete cross-sectional area in pipe section 10, in mm 2 ;

[0083] A s is the total cross-sectional area of the steel bars in pipe section 10, in mm 2 ;

[0084] E c is the elastic modulus of concrete, in kN / mm 2 ;

[0085] E s is the elastic modulus of the steel bar, in kN / mm 2 .

[0086] In this embodiment, the method for achieving communication connection between the stress sensing component 40 and the data control terminal 50 is not specifically limited. In one embodiment, the stress sensing component 40 and the data control terminal 50 are connected via a data line; in another embodiment, the stress sensing component 40 and the data control terminal 50 are connected wirelessly, making the interior of the pipe section more concise and reducing the operation risk. Figure 7 The steel bar stress gauge 41 embedded in the inner wall of the pipe section has a signal extension line 43 extending therefrom and connected to a signal acquisition box 44. The signal acquisition box 44 includes a data acquisition module and a wireless transmission module. The data acquisition module collects data from the stress sensing component 40 and transmits the data to a data control terminal 50 through the wireless transmission module. The data control terminal 50 can be a computer or a mobile phone.

[0087] In this embodiment, there is no specific limitation on the number, location and length of the monitoring sections in the pipe section, and they can be flexibly adjusted according to the number, structure and arrangement of the pipe segments 10 constituting the pipe section. It is easy to understand that the monitoring sections that are pushed into the tunnel later have the data obtained from the monitoring sections that are pushed into the tunnel earlier in different strata as a reference. The more monitoring sections that are pushed into the tunnel earlier, the more accurate the judgment on whether there is sediment 72 accumulation in the monitoring section will be when the monitoring sections that enter the tunnel later obtain data in a certain stratum by comparing the data obtained by other monitoring sections in the stratum.

[0088] An embodiment of the present invention further provides a sediment treatment method of a pipe jacking sediment treatment device, characterized by comprising the following steps:

[0089] S1. Determine the size of the slag chute 12 on the outer wall of the pipe segment 10 based on the design requirements for the pipe diameter and wall thickness of the pipe segment 10. Install slag retaining assemblies 30 and / or slag discharge taps 20 on some of the pipe segments 10. The pipe segment formed by connecting the pipe segments 10 includes at least two slag discharge taps 20 and two slag retaining assemblies 30, respectively, located at both ends of the segment connected by the two slag discharge taps 20.

[0090] S2. Carry out flushing and slag removal operations: connect the slurry inlet pipe 61 and the slag discharge pipe 62 of the slag discharge equipment to a slag discharge tap 20 respectively, open the valves 22 of the two slag discharge taps 20, start the slag discharge equipment and inject flushing slurry, then extend the slag retaining plates 31 of the two slag retaining assemblies 30 to the inner wall of the tunnel to form a partition section, and the two slag discharge taps 20 connected to the slag discharge equipment are both located within the partition section;

[0091] Alternatively, the slag retaining plates 31 of the two slag retaining assemblies 30 are extended downward to the inner wall of the tunnel to form a partition section. Subsequently, the slurry inlet pipe 61 and the slag discharge pipe 62 of the slag discharge equipment are respectively connected to a slag discharge tap 20. The two slag discharge taps 20 connected to the slag discharge equipment are both located in the partition section. The valves 22 of the two slag discharge taps 20 are opened, the slag discharge equipment is started, and the flushing slurry is injected.

[0092] S3. End the flushing and slag removal operation: turn off the switch of the slag discharge equipment, close the valve 22 of the slag discharge faucet 20, retract the slag baffle 31, and remove the slurry inlet pipe 61 and the slag discharge pipe 62.

[0093] In this embodiment, the pipe sections 10 that make up the pipe section are all provided with a slag chute 12. The size of the slag chute 12 depends on the size of the pipe section 10 to ensure that the pipe section 10 after grooving can meet the strength requirements of the construction. The slag chute 12 is located at the bottom of the pipe section during the jacking process, leaving a large space between it and the inner wall of the tunnel, so that the residual residue material is not easy to settle and form in a short time, and can be carried away by the mud, which greatly reduces the occurrence of blockage of the pipe section 10. At the same time, the slag chute 12 can gather the sediment 72 to the greatest extent, which is convenient for subsequent flushing and slag removal operations. The pipe section also includes at least two slag discharge faucets 20, and two slag blocking assemblies 30 respectively arranged at both ends of the section connected by the two slag discharge faucets 20. When sediment 72 that cannot be carried away by the mud accumulates in the slag chute 12 between the two slag blocking assemblies 30, a partition section can be formed by extending the slag blocking plate 31, and the sediment 72 in the partition section can be centrally flushed and slag removed, with high slag removal efficiency.

[0094] In this embodiment, when there is sediment 72 in the slag chute 12 below the slag retaining plate 31, due to different stratum properties, the sediment 72 can be divided into a colloidal substance that can be cut by the slag retaining plate 31, and a solid object that is mostly composed of rock debris and is difficult to be cut by the slag retaining plate 31.

[0095] Therefore, when sediment 72 accumulates in the partition section connected by the two slag stopping assemblies 30, you can first try to see if the slag stopping plate 31 of the slag stopping assembly 30 can be extended. If the slag stopping plate 31 can be smoothly extended and pressed against the pipe wall, the slurry inlet pipe 61 and the slag discharge pipe 62 of the slag discharge equipment can then be connected to a slag discharge faucet 20 respectively. The two slag discharge faucets 20 connected to the slag discharge equipment are both located in the partition section. Open the valves 22 of the two slag discharge faucets 20, start the slag discharge equipment, inject flushing slurry, and carry out flushing and slag removal operations. If the slag stopping plate 31 cannot be smoothly extended, first connect the slag discharge equipment to the slag stopping faucet and inject flushing slurry to disperse the sediment 72 under the slag stopping plate 31. After the slag stopping plate 31 can be smoothly extended and pressed against the pipe wall, continue to carry out flushing and slag removal operations.

[0096] In this embodiment, the type of slag discharge equipment is not specifically limited. As a preferred embodiment, reference is made to Figure 6 The slag removal equipment is a slurry pump truck 60. When flushing and slag removal operations are required, the slurry pump truck 60 enters the pipe section and moves to the vicinity of the section to be operated. The other ends of the slurry inlet pipe 61 and the slag discharge pipe 62 connected to the slurry pump truck 60 are respectively connected to the slag discharge faucet 20. After the flushing and slag removal operations are completed, the slurry pump truck 60 moves out of the pipe section. In this embodiment, the slurry pump truck 60 can be flexibly moved within the pipe section, making flushing and slag removal operations simpler and more economical.

[0097] As a preferred embodiment, the slurry inlet pipe 61 and the slag discharge pipe 62 are mainly made of rubber material with a skeleton and have high pressure resistance.

[0098] As a preferred embodiment, before the aforementioned step S2, the method further includes: in step S1, some pipe segments 10 are further provided with stress sensing components 40, and the stress sensing components 40 transmit data to the data control terminal 50. The pipe segment formed by connecting the pipe segments 10 includes at least three stress sensing components 40 in its extension direction. Adjacent stress sensing components 40 constitute a monitoring section. In the order of jacking into the tunnel, each monitoring section is sequentially recorded as the first monitoring section J1, the second monitoring section J2, ... the Nth monitoring section. The length of the first monitoring section J1 is recorded as L1, the stress difference between the two stress sensing components 40 in the first monitoring section J1 is recorded as ΔN1, the length of the second monitoring section J2 is recorded as L2, the stress difference between the two stress sensing components 40 in the second monitoring section J2 is recorded as ΔN2, ... the length of the Nth monitoring section is recorded as L n The stress difference between the two stress sensing components 40 in the Nth monitoring section is recorded as △N n ;

[0099] The monitoring section is located within the partition section. The friction resistance per unit length of the monitoring section is calculated using the following formula:

[0100]

[0101] Where, f k Represents the friction resistance per unit length of the kth monitoring section, in kN / m;

[0102] △N k Represents the axial stress difference of the pipe section in the kth monitoring section, in kN;

[0103] L k Represents the length of the kth monitoring section, in meters;

[0104] The tunnel is divided into several formation sections, and the data control terminal 50 records the unit length friction resistance of each monitoring section entering the same formation section. When the unit length friction resistance of a monitoring section in the formation section reaches the preset condition, according to step S2, the partition section where the monitoring section is located is flushed and deslagging.

[0105] When the frictional resistance per unit length of the monitoring section in the formation section is greater than the operating threshold, it is considered that the preset condition is met. For the operating threshold, there are:

[0106]

[0107] Where x represents the operating threshold, in kN / m;

[0108] Represents the average friction resistance per unit length under normal conditions, in kN / m;

[0109] a represents the safety factor, a>1.

[0110] The preset condition is determined by the average friction resistance per unit length measured in the formation section by the monitoring section that is pushed into the tunnel before the monitoring section. When the formation section passes through only one monitoring section, the friction resistance per unit length measured in the passed monitoring section is the average friction resistance per unit length of the formation section; when the formation section has successfully passed through multiple monitoring sections, the average value of the friction resistance per unit length measured in multiple monitoring sections is the average friction resistance per unit length of the formation section. In this embodiment, there is no specific limitation on the selection of the safety factor. As a preferred implementation, the safety factor is 1.8.

[0111] In this embodiment, the pipe section includes at least three stress sensing assemblies 40 along its extension direction, with adjacent stress sensing assemblies 40 forming a monitoring section. During the jacking process, the data control terminal 50 can obtain the unit-length frictional resistance of each monitoring section in the stratum section in which it is located. Because the shape and properties of the jacked stratum section remain unchanged, under normal circumstances, when different monitoring sections in the pipe section pass through the same stratum section, and the grouting process and pipe section axis deviation remain essentially unchanged, the unit-length frictional resistance measured by different monitoring sections in the stratum section will be similar. By comparing the unit-length frictional resistance, it can be determined whether sediment 72 has accumulated within the monitoring section. Multiple sets of stress sensing assemblies 40 are arranged throughout the pipeline, providing more accurate and efficient real-time monitoring of the entire pipeline, saving manpower, material, and financial resources, and enabling comprehensive and scientific understanding and control of the actual working conditions of the pipe jacking. At the same time, the data control terminal 50 monitors the status of the monitoring section in real time, and cooperates with the slag retaining assembly 30 and the slag discharge tap 20 in the pipeline to accurately and efficiently handle the sediment 72 in the abnormal monitoring section, reducing the friction resistance around the pipe, so that the jacking pipe can be pushed forward normally, and greatly reducing the construction cost and shortening the construction period. It has the advantages of safety, efficiency, economy, reliability, low carbon and environmental protection.

[0112] As a specific implementation method, refer to Figure 6 and Figure 7 The stress sensing assembly 40 is installed in the entire section of the pipeline. Two adjacent stress sensing assemblies 40 constitute a monitoring section. According to the order of jacking, the monitoring sections are recorded as the first monitoring section J1, the second monitoring section J2, ... the Nth monitoring section, and the corresponding lengths are L1, L2, ... L n , Figure 7Only three monitoring sections are shown. In actual projects, more monitoring sections can be arranged. The first monitoring section J1 is arranged after the first pipe section 10, and the subsequent monitoring sections are arranged continuously until the opening of the starting shaft 70. The spacing can be inconsistent. The stress sensing component 40 is composed of a steel bar stress gauge 41. The data collected by the steel bar stress gauge 41 is transmitted to the data control terminal 50. The measurement data of the steel bar stress gauge 41 before the pipe section 10 is lowered and jacked is used as the initial value. The difference between the subsequent monitoring value and the initial value is the actual steel bar stress at the monitoring position during the construction stage. The data during the subsequent jacking process is converted by the data control terminal 50, and the steel bar stress σ js It is converted into the axial stress N of the cross section of the pipe segment 10, and further converted into the friction resistance per unit length. Since the shape and properties of the stratum section that has been pushed into have not changed, under normal circumstances, when different monitoring sections in the pipe section pass through the same stratum section, under the condition that the grouting process and the deviation of the pipe section axis remain basically unchanged, the friction resistance per unit length measured by different monitoring sections in the stratum section is similar. If the sediment 72 is enriched at the bottom of the pipe, the mud drag reduction effect will be reduced and the friction resistance around the pipe will increase sharply. At this time, the data control terminal 50 will issue an early warning, and the system can be operated in time. The corresponding monitoring section is subjected to flushing and slag removal operations, and the unit length friction resistance calculated in the first monitoring section J1 is used as the average unit length friction resistance. The data control terminal 50 can convert and record the unit length friction resistance actually measured in the subsequent monitoring section in the same formation section, and continuously revise the operation threshold of the formation section. If the unit length friction resistance measured in the subsequent monitoring section is greater than this threshold, it means that there is a lot of sediment 72 at the bottom of the pipe, which has caused a great impact on the jacking. It is necessary to carry out flushing and slag removal operations on the monitoring section to prevent the jacking from occurring. Figure 6 For example, Figure 6 The slag blocking components 30 at both ends of the second monitoring section J2 can be connected to form a second partition section G2, and the slag blocking components 30 at both ends of the third monitoring section J3 can be connected to form a third partition section G3. When the unit length friction resistance measured in the second monitoring section J2 is greater than the operation threshold of the formation section, the second monitoring section J2 is subjected to a flushing and slag removal operation, and the slag blocking plates 31 of the slag blocking components 30 at both ends of the second monitoring section J2 are extended to the inner wall of the tunnel to form a second partition section G2. The slurry pump truck 60 moves to the vicinity of the second monitoring section J2. The slurry inlet pipe 61 and the slag discharge pipe 62 of the slurry pump truck 60 are respectively connected to a slag discharge faucet 20 in the second partition section G2. The valves 22 of the two slag discharge faucets 20 are opened, the slurry pump truck 60 is started and the flushing slurry is injected. After completing the flushing and slag removal operation, the switch of the slag discharge equipment is turned off, the valve 22 of the slag discharge faucet 20 is closed, the slag baffle 31 is retracted, the slurry inlet pipe 61 and the slag discharge pipe 62 are removed, and the slurry pump truck 60 is moved away.

[0113] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A pipe jacking sediment treatment device, characterized in that: The invention comprises a pipe section composed of at least one pipe segment (10), wherein the pipe section is provided with a grouting hole (11) penetrating the pipe wall, and an outer wall of the pipe section is provided with a slag chute (12), wherein the extension direction of the slag chute (12) is consistent with the extension direction of the pipe section, and the slag chute (12) is suitable for being located at the bottom of the pipe section when the pipe section is pushed forward, so that sediment (72) is accumulated inside the slag chute (12); The system further comprises at least two slag discharge faucets (20), the slag discharge faucets (20) being arranged on the inner wall of the pipe section, the pipelines of the slag discharge faucets (20) passing through the pipe wall of the pipe section and being in communication with the slag chute (12), the slag discharge faucets (20) being provided with valves (22), and the slag discharge faucets (20) being suitable for being in communication with slag discharge equipment; The invention also includes at least two slag blocking assemblies (30), wherein the slag blocking assemblies (30) include slag blocking plates (31), wherein the slag blocking plates (31) are slidably connected to the pipe wall of the pipe section, and wherein the slag blocking plates (31) have an extended state in which they extend to block the slag chute (12) and are adapted to be in close contact with the inner wall of the tunnel, and a retracted state in which they do not extend to the bottom of the slag chute (12). The two slag blocking assemblies (30) are connected to form a partition section, and at least two slag discharge taps (20) are provided in the partition section. The slag blocking assembly (30) also includes a base (32) and a connecting rod (33). The base (32) is sealed and fixed to the pipe wall of the pipe section and is located between the inner wall of the pipe section and the slag chute (12). A connecting groove (321) is provided inside the base (32), and the connecting groove (321) is communicated with the slag chute (12). The slag blocking plate (31) is slidably arranged in the connecting groove (321). The bottom of the connecting groove (321) is provided with a first threaded hole (322) that passes through the base (32). The connecting rod (33) is threadedly connected to the first threaded hole (322). One end of the connecting rod (33) extends outward from the inner wall of the pipe section, and the other end extends into the base (32) and is rotatably connected to the slag blocking plate (31). The connecting rod (33) is suitable for driving the slag blocking plate (31) to slide in the base (32) when rotating relative to the base (32).

2. The pipe jacking sediment treatment device according to claim 1, characterized in that: The pipe wall of the pipe section is provided with a mounting groove (13) communicating the inner space thereof with the slag chute (12); the base (32) extends into the mounting groove (13) and is sealed and fixed to the mounting groove (13).

3. The pipe jacking sediment treatment device according to claim 1, characterized in that: The pipeline of the slag discharge faucet (20) obliquely penetrates the pipe wall of the pipe section, and in the direction from the inner wall of the pipe section to the outer wall of the pipe section, the pipeline of the slag discharge faucet (20) gradually moves away from the nearest slag blocking plate (31).

4. The pipe jacking sediment treatment device according to any one of claims 1 to 3, characterized in that: At least three groups of stress sensing components (40) are arranged in the pipe section along the extension direction of the pipe section. The stress sensing components (40) are suitable for monitoring the axial stress of the pipe section at the location where the stress sensing components (40) are arranged. Adjacent stress sensing components (40) constitute a monitoring section. Each monitoring section is located in a partition section connected by two slag blocking components (30). The pipe jacking sediment processing device also includes a data control terminal (50). The stress sensing components (40) are communicatively connected to the data control terminal (50).

5. The pipe jacking sediment treatment device according to claim 4, characterized in that: The stress sensing assembly (40) is composed of at least one stress sensor, wherein the stress sensor includes a steel bar stress gauge (41) and a mounting base (42), at least two of the mounting bases (42) are fixedly connected to the main reinforcement (14) of the pipe section, a steel bar stress gauge (41) is fixed between the two mounting bases (42), and the steel bar stress gauge (41) is communicatively connected to the data control terminal (50); And / or the stress sensing assembly (40) is composed of at least two stress sensors, and the stress sensors of a group of the stress sensing assemblies (40) are evenly arranged along the circumference of the pipe section.

6. A sediment treatment method for a pipe jacking sediment treatment device according to any one of claims 1 to 5, characterized in that: The steps include: S1. According to the design requirements of the pipe diameter and wall thickness of the pipe segment (10), the size of the slag chute (12) on the outer wall of the pipe segment (10) is determined, and a portion of the pipe segment (10) is provided with a slag blocking assembly (30) and / or a slag discharge tap (20), and the pipe segment formed by connecting the pipe segments (10) includes at least two slag discharge taps (20) and two slag blocking assemblies (30) respectively provided at both ends of the segment connected by the two slag discharge taps (20); S2. Carry out flushing and slag removal operations: connect the slurry inlet pipe (61) and the slag discharge pipe (62) of the slag discharge equipment to one of the slag discharge faucets (20), open the valves (22) of the two slag discharge faucets (20), start the slag discharge equipment and inject flushing slurry, then extend the slag retaining plates (31) of the two slag retaining assemblies (30) downward to the inner wall of the tunnel to form a partition section, and the two slag discharge faucets (20) connected to the slag discharge equipment are both located within the partition section; or extending the slag retaining plates (31) of the two slag retaining assemblies (30) downward to the inner wall of the tunnel to form a partition section, then connecting the slurry inlet pipe (61) and the slag discharge pipe (62) of the slag discharge equipment to one of the slag discharge taps (20), respectively, the two slag discharge taps (20) connected to the slag discharge equipment are both located within the partition section, opening the valves (22) of the two slag discharge taps (20), starting the slag discharge equipment and injecting flushing slurry; S3. End the flushing and slag removal operation: turn off the switch of the slag discharge equipment, close the valve (22) of the slag discharge faucet (20), retract the slag baffle (31), and remove the slurry inlet pipe (61) and the slag discharge pipe (62).

7. The sediment treatment method of the pipe jacking sediment treatment device according to claim 6, characterized in that: Before the step S2, the method further includes: in the step S1, part of the pipe sections (10) are further provided with stress sensing components (40), the stress sensing components (40) transmit data to a data control terminal (50), the pipe section formed by connecting the pipe sections (10) comprises at least three stress sensing components (40) in its extension direction, adjacent stress sensing components (40) constitute a monitoring section, and in the order of jacking into the tunnel, the monitoring sections are sequentially recorded as the first monitoring section (J1), the second monitoring section (J2), ... the Nth monitoring section, the length of the first monitoring section (J1) is recorded as L1, the stress difference between the two stress sensing components (40) in the first monitoring section (J1) is recorded as ΔN1, the length of the second monitoring section (J2) is recorded as L2, the stress difference between the two stress sensing components (40) in the second monitoring section (J2) is recorded as ΔN2, ... the length of the Nth monitoring section is recorded as L n The stress difference between the two stress sensing components (40) in the Nth monitoring section is recorded as ΔN n ; The monitoring section is located within the partition section, and the frictional resistance per unit length f of the monitoring section is calculated. k , and its calculation formula is: Where, f k Represents the friction resistance per unit length of the kth monitoring section, in kN / m; △N k Represents the axial stress difference of the pipe section in the kth monitoring section, in kN; L k Represents the length of the kth monitoring section, in meters; The tunnel is divided into several stratum sections, and the data control terminal (50) records the unit length friction resistance of each monitoring section entering the same stratum section. When the unit length friction resistance of a monitoring section in the stratum section reaches a preset condition, according to step S2, a flushing and slag removal operation is carried out on the partition section where the monitoring section is located.

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