Synchronous slurry preparation system for regeneration of shield muck in tunnel

Abstract

The invention relates to an in-tunnel shield muck regeneration and slurry preparation synchronous system, which comprises a slurry preparation unit, a slurry preparation unit and a slurry preparation unit, the shield muck conveying unit is connected with the slurry preparation unit and used for conveying shield muck to the slurry preparation unit; the primary slurry storage unit is used for storing and mixing other admixture slurry except the slurry; the finished product slurry unit is respectively connected with the slurry preparation unit and the primary slurry storage unit, receives the slurry from the slurry preparation unit and other admixture slurry except the slurry from the primary slurry storage unit at the same time, and mixes the slurry and the admixture slurry to form synchronous slurry; wherein the slurry preparation unit, the primary slurry storage unit and the finished slurry unit are arranged in the shield tunneling machine and move along with the shield tunneling machine. Shield muck can be separated and reused in a tunnel to prepare synchronous slurry, and the device has great practical value.

Description

Technical Field

[0001] The present invention relates to the technical field of shield tunneling construction in tunnels, and in particular to a synchronous slurry preparation system for shield slag regeneration in tunnels. Background Art

[0002] In the prior art, synchronous grouting slurry is generally prepared at a commercial concrete mixing station, transported to the site after preparation, and then transported vertically to the slurry storage box of a battery vehicle, and then transported by the battery vehicle to the shield machine slurry storage tank for synchronous grouting. However, the prior art cannot synchronously utilize the slag generated during the excavation process, and a large amount of resources and storage space are still required for the transportation and stacking of the slag.

[0003] In view of the above problems, if the slag is reused during the slag discharge process to complete the synchronous grouting slurry preparation, and the grouting work is synchronized, the transportation, storage and stacking costs of the slag can be reduced, and the purpose of green construction can be achieved. Therefore, designing a synchronous slurry preparation system for shield slag regeneration in tunnels is an urgent problem to be solved.

[0004] It should be understood that the above statements merely provide background technology related to the present invention and do not necessarily constitute prior art. Summary of the invention

[0005] The purpose of the present invention is to provide a system for preparing synchronous slurry for shield slag regeneration in a tunnel, which can achieve the purpose of separating and reusing shield slag in a tunnel to prepare synchronous slurry.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a synchronous slurry preparation system for shield slag regeneration in a tunnel, comprising: a mud preparation unit, used to make shield slag into mud; a shield slag conveying unit, connected to the mud preparation unit, conveying the shield slag to the mud preparation unit; a raw slurry storage unit, used to store and mix slurries with other admixtures except mud; a finished slurry unit, respectively connected to the mud preparation unit and the raw slurry storage unit, simultaneously receiving the mud from the mud preparation unit and the slurries with other admixtures except mud from the raw slurry storage unit, and mixing them to form synchronous slurry; wherein the mud preparation unit, the raw slurry storage unit and the finished slurry unit are all arranged inside the shield machine, and move with the movement of the shield machine.

[0007] Preferably, the shield slag conveying unit includes: a slag discharge conveyor belt and a vibrating filter screen connected thereto; the slag discharge conveyor belt is used to convey the shield slag to the vibrating filter screen for filtering, and the vibrating filter screen is connected to the mud preparation unit to transport the shield slag to the mud preparation unit after filtering.

[0008] Preferably, the vibrating slag screen comprises: a support frame, which is a side support with different heights, namely a low side support and a high side support, a height difference is formed between the two side supports, and one side of the high side support is connected to the slag discharge conveyor belt; a screen, which is laid as a whole on the support frame and is respectively connected to the low side support and the high side support to form an inclined surface from high to low; a slag outlet, which is arranged at the low side support, and the slag outlet is connected to the lowest point of the screen; an exciter, which is connected to the screen as a whole to control the vibration of the screen.

[0009] Preferably, the mud preparation unit includes: a mud tank body, which is provided with an opening on the top and is located directly below the screen of the vibrating filter residue screen to receive the shield debris filtered by the vibrating filter residue screen; a mud mixer, which is transversely fixed to the middle of the mud tank body, and is used to stir the debris and water transported to the mud tank body to form mud; a water tank and a water inlet pipe, the water tank is connected to the water inlet pipe, the water inlet pipe is transversely fixed on the side wall of the mud tank body and is connected to the interior of the mud tank body; a flow controller, which is arranged on the water inlet pipe to control the water flow rate to control the mud specific gravity; a slurry outlet, which is arranged below the mud tank body, and is connected to the finished slurry unit through a pipeline to transport the mud generated by the mud preparation unit to the finished slurry unit.

[0010] Preferably, a filter screen is provided at the slurry outlet, and the pore size of the filter screen is 2 mm to 4 mm.

[0011] Preferably, the raw pulp storage unit includes: a raw pulp tank body, which stores and mixes slurries of other admixtures except mud; a raw pulp inlet, which is arranged above the raw pulp tank body, and conveys slurries of other admixtures except mud into the raw pulp tank body; a raw pulp mixer, which is laterally fixed in the middle of the raw pulp tank body, and stirs the slurries of other admixtures except mud in the raw pulp tank body; a raw pulp outlet, which is arranged below the raw pulp tank body, and the raw pulp outlet is connected to the finished product slurry unit through a pipeline, so as to convey the slurries of other admixtures except mud after stirring in the raw pulp storage unit to the finished product slurry unit.

[0012] Preferably, the finished product slurry unit includes: a finished product tank body; a finished product feed port, which is arranged below the finished product tank body and is respectively connected to the slurry outlet and the original slurry outlet through pipes to receive mud and other admixture slurries except mud; a finished product mixer, which is laterally fixed in the middle of the finished product tank body to stir the mud and other admixture slurries except mud in the finished product tank body; and a finished product outlet, which is arranged on one side of the finished product tank body to output the generated synchronous slurry.

[0013] Preferably, the finished product discharge port is connected to the synchronous grouting machinery of the shield machine, and after the synchronous slurry is configured, it is directly provided to the synchronous grouting machinery of the shield machine for use.

[0014] Preferably, a fork is provided on the slag discharge conveyor belt, and the fork is provided on the slag discharge conveyor belt. By adjusting the fork, the slag discharge conveyor belt is connected to different mud preparation units, so that the slag is transported to different mud preparation units; or by adjusting the fork, the slag discharge conveyor belt is connected to an external transport vehicle, so that the slag is transported outside the tunnel.

[0015] Preferably, a hinge hole is provided on the mud tank body, and a hinge is passed through the hinge hole and connected to the trolley, so that the mud tank body can be turned over to clean the residue inside and on the filter screen.

[0016] To sum up, compared with the existing technology, the present invention provides a system for preparing synchronous slurry for shield slag regeneration in tunnels, which can solve the problem of large-scale stacking of slag in existing shield construction technology, save space and time, and reduce the difficulty of construction and management; it can solve the environmental pollution problem easily caused by the occupation of land by slag disposal; it can also realize the separation and reuse of shield slag in the tunnel to make synchronous slurry, so as to achieve the purpose of green construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a longitudinal section schematic diagram of the shield slag regeneration synchronous slurry preparation system of the present invention;

[0018] Figure 2 It is a schematic plan view of a synchronous slurry preparation system for shield slag regeneration in the present invention;

[0019] Figure 3 It is a cross-sectional schematic diagram of the synchronous slurry preparation system for shield slag regeneration in the present invention;

[0020] Figure 4 It is a structural schematic diagram of the slag discharge conveyor belt in the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the vibrating filter residue screen in the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the discharge port of the mud preparation tank in the present invention;

[0023] In the figure:

[0024] 100, slag conveyor belt; 101, fork; 110, vibrating slag screen; 111, slag outlet; 112, screen; 113, support frame; 114, vibrator; 115, low side bracket; 116, high side bracket; 150 water tank;

[0025] 201, mud tank; 202, mud mixer; 203, water inlet pipe; 204, mud outlet; 205, flow control meter;

[0026] 301, raw pulp tank; 302, raw pulp inlet; 303, raw pulp outlet; 304, raw pulp mixer;

[0027] 401, finished product tank body; 402, finished product feed port; 403, finished product mixer; 404, finished product discharge port. DETAILED DESCRIPTION

[0028] The following is combined with Figures 1 to 6 , the present invention is further explained by describing a preferred specific embodiment in detail.

[0029] It should be noted that the drawings are in a very simplified form and use non-precise proportions. They are only used to conveniently and clearly assist in explaining the embodiments of the present invention, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention.

[0030] It should be noted that, in the present invention, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only the elements explicitly listed, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] like Figure 1 and Figure 2As shown, the present invention provides a synchronous slurry preparation system for shield slag regeneration in a tunnel, comprising: a shield slag conveying unit, a slurry preparation unit, a raw slurry storage unit and a finished slurry unit; the shield slag conveying unit is connected to the slurry preparation unit, and is used to convey the shield slag to the slurry preparation unit; the slurry preparation unit is used to make the shield slag into slurry; the raw slurry storage unit is used to store and mix other admixture slurries except slurry, including lime, admixture, fly ash, etc.; the finished slurry unit is respectively connected to the slurry preparation unit and the raw slurry storage unit, and simultaneously receives the slurry from the slurry preparation unit and the other admixture slurries except slurry from the raw slurry storage unit, and mixes them to form synchronous slurry. Wherein, the slurry preparation unit, the raw slurry storage unit and the finished slurry unit are all arranged inside the shield machine, and can move with the movement of the shield machine.

[0032] Further, such as Figure 1 and Figure 3 As shown, the shield slag conveying unit includes: a slag discharge conveyor belt 100 and a vibrating slag filter screen 110 connected thereto; the slag discharge conveyor belt 100 is used to convey the shield slag to the vibrating slag filter screen 110 for slag filtering, and the vibrating slag filter screen 110 is connected to the mud preparation unit, and is used to convey the shield slag to the mud preparation unit after the slag is filtered.

[0033] Further, such as Figure 5 As shown, the vibrating residue screen 110 includes: a residue outlet 111, a screen 112, a support frame 113 and an exciter 114; wherein the support frame 113 is a side support with different heights, namely a low side support 115 and a high side support 116, and a height difference is formed between the two side supports; the screen 112 is laid on the support frame 113 as a whole, and is connected to the low side support 115 and the high side support 116 respectively, so that after the screen 112 is laid, an inclined surface from high to low can be formed; the residue outlet 111 is arranged at the low side support 115, and the residue outlet 111 is connected to the lowest point of the screen 112; the exciter 114 is connected to the screen 112 as a whole, so as to control the vibration of the screen 112. It can be understood that the shield slag is transported from the slag discharge conveyor belt 100 to the screen 112 on one side of the high side support 116, and the shield slag located on the screen 112 causes the screen 112 to vibrate through the exciter 114, so that during the movement of the shield slag from the high side support 116 to the low side support 115, the large-sized slag and debris therein are discharged and filtered through the slag outlet 111, while the small-sized slag is vibrated to the bottom of the screen 112 and directly enters the mud preparation unit.

[0034] Further, such as Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the mud preparation unit includes: a mud tank 201, a mud mixer 202, a water inlet pipe 203, a slurry outlet 204, a flow control meter 205 and a water tank 150; the mud tank 201 has an opening on its top, which is located directly below the screen 112 of the vibrating filter screen 110 to receive the shield slag filtered by the vibrating filter screen 110; the water tank 150 is connected to the water inlet pipe 203, and the water inlet pipe 203 is transversely fixed on the side wall of the mud tank 201 and is connected to the interior of the mud tank 201 for to transport water into the mud tank 201; the mud mixer 202 is transversely fixed at the middle of the mud tank 201, to stir the slag and water transported to the mud tank 201 to form mud; the flow controller 205 is arranged on the water inlet pipe 203, to control the water flow rate, so as to achieve the purpose of controlling the mud specific gravity; the slurry outlet 204 is arranged below the mud tank 201, and the slurry outlet 204 is connected to the finished slurry unit through a pipeline, so as to transport the mud generated by the mud preparation unit to the finished slurry unit.

[0035] Furthermore, in order to prevent the presence of large-size slag in the slag after the vibrating filter screen 110 has screened the slag, which may cause subsequent equipment to be blocked, a filter screen is further provided at the slurry outlet 204, wherein the aperture of the filter screen is 2 mm to 4 mm, preferably 3 mm. A hinge hole is provided on the mud tank 201, and after the filtration is completed, the hinge can be passed through the hinge hole on the mud tank 201, and the hinge can be connected to the trolley, and the mud tank 201 can be turned over to clean the residue inside the mud tank 201 and at the screen.

[0036] Further, such as Figure 1 and Figure 2 As shown, the raw pulp storage unit includes: a raw pulp tank body 301, a raw pulp feed port 302, a raw pulp discharge port 303 and a raw pulp mixer 304; the raw pulp tank body 301 is used to store and mix other admixture slurries except mud; the raw pulp feed port 302 is arranged above the raw pulp tank body 301, and is used to transport other admixture slurries except mud into the raw pulp tank body 301; the raw pulp mixer 304 is transversely fixed in the middle of the raw pulp tank body 301, and is used to stir other admixture slurries except mud in the raw pulp tank body 301; the raw pulp discharge port 303 is arranged below the raw pulp tank body 301, and the raw pulp discharge port 303 is connected to the finished product slurry unit through a pipeline, and is used to transport other admixture slurries except mud after stirring in the raw pulp storage unit to the finished product slurry unit.

[0037] Further, such as Figure 1 and Figure 2 As shown, the finished product slurry unit includes: a finished product tank body 401, a finished product feed port 402, a finished product mixer 403 and a finished product discharge port 404; the finished product feed port 402 is arranged below the finished product tank body 401, and is respectively connected to the slurry discharge port 204 and the original slurry discharge port 303 through pipelines, so as to receive mud and other admixture slurries except mud; the finished product mixer 403 is transversely fixed in the middle of the finished product tank body 401, so as to stir the mud and other admixture slurries except mud in the finished product tank body 401 to generate synchronous slurry; the finished product discharge port 404 is arranged on one side of the finished product tank body 401, so as to output the generated synchronous slurry.

[0038] Furthermore, the finished product discharge port 404 is connected to the synchronous grouting machinery of the shield machine (not shown in the figure), and after the synchronous slurry is configured, it is directly provided to the synchronous grouting machinery of the shield machine for use.

[0039] Furthermore, in use, the operation process of the synchronous slurry preparation system for shield slag regeneration in a tunnel provided by the present invention is specifically as follows: the slag conveyor belt 100 performs slag discharge, and the shield slag is conveyed to the vibrating filter slag screen 110, which filters and enters the mud tank 201, and the slag discharge is stopped after the slag discharge volume reaches the upper capacity limit set by the mud tank 201, and the flow controller 205 controls the water inlet pipe 203 to add a predetermined amount of water into the mud tank 201, and the mud mixer 20 2 is used for stirring, the shield slag and water are fully stirred to form mud, and the mud is filtered and transported to the finished product tank 401 through the slurry outlet 204; the other admixture slurries except the mud in the original slurry tank 301 are prepared in advance according to the mix ratio, and are transported to the finished product tank 401 through the pipeline from the original slurry outlet 303; the finished product mixer 403 fully stirs the mud and the other admixture slurries except the mud to generate synchronous slurry, and outputs it from the finished product outlet 404 for use.

[0040] It can be understood that, in this embodiment, Figure 4 As shown, the shield slag is discharged through the slag discharge conveyor belt 100, and the slag discharge is stopped when the slag discharge volume reaches the upper capacity limit set by the mud tank 201. At this time, in order to ensure that the mud in the mud tank 201 does not affect the discharge of slag during the shield tunneling process during the stirring period, a fork 101 is set on the slag discharge conveyor belt 100. Among them, the fork 101 can be connected to other mud preparation units, and after the amount of slag in the mud tank 201 reaches the required amount, the slag is transported to other mud preparation units; the fork 101 can also be connected to a transport vehicle to directly discharge the slag out of the tunnel.

[0041] To sum up, the present invention provides a system for preparing synchronous slurry for shield slag regeneration in tunnels, which can solve the problem of large-scale stacking of slag in existing shield construction technology, save space and time, and reduce the difficulty of construction and management; it can solve the environmental pollution problem easily caused by the occupation of land by slag disposal; it can also realize the separation and reuse of shield slag in the tunnel to make synchronous slurry, so as to achieve the purpose of green construction.

[0042] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A synchronous slurry preparation system for shield slag regeneration in a tunnel, characterized in that: include: A mud preparation unit, used to make mud from shield muck; A shield slag conveying unit, connected to the mud preparation unit, conveys the shield slag to the mud preparation unit; A raw slurry storage unit, used to store and mix other admixture slurries except mud; A finished slurry unit is connected to the mud preparation unit and the raw slurry storage unit respectively, receives the mud from the mud preparation unit and other admixture slurries except the mud from the raw slurry storage unit at the same time, and mixes them to form synchronous slurry; The mud preparation unit, the raw slurry storage unit and the finished slurry unit are all arranged inside the shield machine and move with the movement of the shield machine.

2. The shield slag regeneration synchronous slurry preparation system according to claim 1, characterized in that: The shield slag conveying unit includes: a slag discharge conveyor belt and a vibrating filter screen connected thereto; the slag discharge conveyor belt is used to convey the shield slag to the vibrating filter screen for filtering, and the vibrating filter screen is connected to the mud preparation unit to convey the shield slag to the mud preparation unit after filtering.

3. The shield slag regeneration synchronous slurry preparation system according to claim 2, characterized in that: The vibrating filter residue screen comprises: The support frame is a side support with different heights, which are a low side support and a high side support, respectively, a height difference is formed between the two side supports, and one side of the high side support is connected to the slag discharge conveyor belt; The screen is laid on the support frame as a whole and is respectively connected to the low side support and the high side support to form an inclined surface from high to low; A slag outlet is arranged at the lower side bracket, and the slag outlet is connected to the lowest point of the screen; The vibrator is integrally connected with the screen to control the vibration of the screen.

4. The shield slag regeneration synchronous slurry preparation system according to claim 2, characterized in that: The mud preparation unit comprises: A mud tank body, the top of which is provided with an opening, and the mud tank body is located directly below the screen of the vibrating filter residue screen to receive the shield slag filtered by the vibrating filter residue screen; A mud mixer is transversely fixed at the middle of the mud tank body and is used to mix the slag and water transported into the mud tank body to form mud; A water tank and a water inlet pipe, wherein the water tank is connected to the water inlet pipe, and the water inlet pipe is transversely fixed to the side wall of the mud tank body and communicated with the interior of the mud tank body; A flow controller is provided on the water inlet pipe to control the water flow rate so as to control the mud specific gravity; a slurry outlet is provided below the mud tank body and is connected to the finished slurry unit through a pipeline so as to transport the mud generated by the mud preparation unit to the finished slurry unit.

5. The shield slag regeneration synchronous slurry preparation system according to claim 4, characterized in that: A filter screen is arranged at the slurry outlet, and the aperture of the filter screen is 2 mm to 4 mm.

6. The shield slag regeneration synchronous slurry preparation system according to claim 4, characterized in that: The raw pulp storage unit comprises: The raw slurry tank is used to store and mix other admixture slurries except mud; A raw pulp feed port is arranged above the raw pulp tank body, and conveys other admixture slurries except mud into the raw pulp tank body; A raw pulp mixer is transversely fixed in the middle of the raw pulp tank body to stir other admixture slurries except mud in the raw pulp tank body; The raw pulp discharge port is arranged below the raw pulp tank body and is connected to the finished product slurry unit through a pipeline to transport other admixture slurries except mud after stirring in the raw pulp storage unit to the finished product slurry unit.

7. The shield slag regeneration synchronous slurry preparation system according to claim 6, characterized in that: The finished product slurry unit comprises: Finished tank body; A finished product feed port is arranged below the finished product tank body and is respectively connected to the slurry outlet and the original slurry outlet through pipelines to receive slurry and other admixture slurries except slurry; A finished product mixer is transversely fixed in the middle of the finished product tank body to stir the slurry and other admixture slurries other than the slurry in the finished product tank body; The finished product discharge port is arranged at one side of the finished product tank body to discharge the generated synchronous slurry.

8. The shield slag regeneration synchronous slurry preparation system according to claim 7, characterized in that: The finished product discharge port is connected to the synchronous grouting machinery of the shield machine, and is directly provided to the synchronous grouting machinery of the shield machine after the synchronous slurry is configured.

9. The shield slag regeneration synchronous slurry preparation system according to claim 2, characterized in that: A fork is set on the slag discharge conveyor belt. By adjusting the fork, the slag discharge conveyor belt is connected to different mud preparation units, so that the slag is transported to different mud preparation units; or by adjusting the fork, the slag discharge conveyor belt is connected to an external transport vehicle, so that the slag is transported outside the tunnel.

10. The shield slag regeneration synchronous slurry preparation system according to claim 5, characterized in that: The mud tank body is provided with a hinge hole, and a hinge is passed through the hinge hole and connected to the trolley so as to turn over the mud tank body and clean the residue inside the mud tank body and the filter screen.

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