CN217813477U - Slurry circulation system and shield tunneling machine - Google Patents
Slurry circulation system and shield tunneling machine Download PDFInfo
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- CN217813477U CN217813477U CN202221638257.6U CN202221638257U CN217813477U CN 217813477 U CN217813477 U CN 217813477U CN 202221638257 U CN202221638257 U CN 202221638257U CN 217813477 U CN217813477 U CN 217813477U
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Abstract
The utility model discloses a slurry circulation system and a shield machine, wherein the slurry circulation system comprises a circulation module, and the circulation module comprises a slurry inlet and a slurry discharge port, wherein the slurry inlet is provided with a slurry inlet pipe, and the slurry discharge port is provided with a slurry discharge pipe; the energy dissipation pipe is arranged close to the slurry inlet pipe; the pipelines are used for respectively connecting the slurry inlet pipe, the slurry discharge pipe and the energy dissipation pipe to form a loop; the standby pipes are arranged between the slurry inlet pipe and the energy dissipation pipe, a first connection state and a second disconnection state are arranged between the standby pipes and the slurry inlet pipe, and the length of a pipeline between the slurry inlet pipe and the energy dissipation pipe can be prolonged when at least one standby pipe is in the first state. By installing the energy dissipation pipe at the slurry inlet pipe, when the slurry flows circularly, the slurry starts from the slurry station, is flung through the energy dissipation pipe and is buffered at a proper position through the standby pipe, the pressure of the slurry falling is reduced, the effects of water hammer, flushing cushion and the like when the shield machine deep shaft starts are obviously reduced, and the bin explosion and the damage to the water stop seal of the tunnel portal during starting are prevented.
Description
Technical Field
The utility model relates to a shield constructs construction technical field, in particular to mud circulation system and shield constructs machine.
Background
In the underground environment with small space and high burial depth, the slurry balance shield machine has overlarge fall between a ground slurry station and the underground shield machine in the split starting storehouse building and early low-speed tunneling stage, and the slurry balance shield machine can generate obvious water hammer effect in the storehouse building process in the mud storehouse building process, so that the pressure is quickly increased to burst the storehouse and damage the sealing of a starting tunnel door when the soil storehouse is built. Meanwhile, in the split starting process, due to the fact that the flow rate of the slurry in the soil bin is low, the pressure of the slurry in the soil bin is high, and the density of the slurry is larger than that of underground water, the slurry can seep into the stratum, and the slurry is suddenly lost.
Few solutions have been proposed in the prior art to the problems associated with high head slurry shield launch. Most of the conventional means adopt a mode of closing a gate valve to reduce flow during building the bin, but the water hammer effect is still very obvious, and the bin is easy to pass through during building the bin.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a mud circulation system can show effects such as the water hammer and dashing the pad that reduce the shield structure machine when dark shaft is originated, prevents to explode the storehouse when originating, destroys the stagnant water of portal and seals.
The utility model discloses still provide a shield constructs machine including above-mentioned mud circulation system.
According to the utility model discloses mud circulation system of first aspect embodiment includes:
the circulation module comprises a slurry inlet and a slurry outlet, wherein a slurry inlet pipe is arranged on the slurry inlet, and a slurry outlet pipe is arranged on the slurry outlet;
the energy dissipation pipe is arranged close to the pulp inlet pipe;
the pipelines are used for respectively connecting the slurry inlet pipe, the slurry discharge pipe and the energy dissipation pipe to form a loop;
a pump module disposed in the circuit for pressurizing the liquid;
the spare pipes are arranged between the pulp inlet pipe and the energy dissipation pipe, a first connected state and a second disconnected state are formed between the spare pipes and the pulp inlet pipe, and the length of a pipeline between the pulp inlet pipe and the energy dissipation pipe can be prolonged when at least one spare pipe is in the first state.
According to the utility model discloses a mud circulation system of first aspect embodiment has following beneficial effect at least: by installing the energy dissipation pipe at the slurry inlet pipe, when the slurry flows circularly, the slurry starts from the slurry station, is flung through the energy dissipation pipe and is buffered at a proper position through the standby pipe, the pressure of the slurry falling is reduced, the effects of water hammer, flushing cushion and the like when the shield machine deep shaft starts are obviously reduced, and the bin explosion and the damage to the water stop seal of the tunnel portal during starting are prevented.
According to the utility model discloses a mud circulation system of first aspect embodiment, the energy dissipation pipe includes bypass pipe and person in charge, the person in charge is connected the return circuit, the both ends of bypass pipe communicate respectively two preset positions of being responsible for, two be equipped with at least one valve between the preset position.
According to the utility model discloses a mud circulation system, mud circulation system still include hydraulic control module, hydraulic control module includes the sensor, the sensor is used for detecting flow in the main pipe, hydraulic control module is used for receiving the information of sensor, hydraulic control is used for the module control the valve.
According to the utility model discloses a mud circulation system, the pump module include the feed pump and the first thick liquid pump of arranging, part the pipeline sets up respectively the feed pump with the first thick liquid pump of arranging makes the feed pump with advance thick liquid union coupling, the feed pump with energy dissipation union coupling, the first thick liquid pump of arranging with arrange thick liquid union coupling, the first thick liquid pump of arranging with it constructs the installation position to reserve between the energy dissipation pipe.
According to the utility model discloses a mud circulation system, the pump module still includes the second and arranges the stuff pump, part the pipeline sets up first row stuff pump with the second row stuff pump makes first row stuff pump with the second row stuff pump is connected, the shield constructs the installation position and sets up the second row stuff pump with between the energy dissipation pipe.
According to the utility model discloses a mud circulation system, the shield constructs the installation position and disposes the shield and constructs pressure relief device, the shield constructs pressure relief device and is used for the shield machine after advancing the hole circulation module's energy dissipation pressure release.
According to the utility model discloses a mud circulation system, mud circulation system still include the pressure release energy dissipater, the circulation module disposes pre-buried slip casting pipeline, the pressure release energy dissipater is used for doing slip casting pipeline pressure release energy dissipation.
According to the utility model discloses a mud circulation system, the pressure release energy dissipater include ball valve, manometer and relief valve, be equipped with emergent grouting pump on the slip casting pipeline, emergent grouting pump sets up before the relief valve.
According to the utility model discloses a mud circulation system of first aspect embodiment, the export of slip casting pipeline is provided with useless thick liquid recovery unit.
According to the utility model discloses shield constructs machine of second aspect embodiment, include: a mud circulation system as described in embodiments of the first aspect of the invention.
According to the utility model discloses the shield constructs machine of second aspect embodiment has following beneficial effect at least: the shield machine uses the slurry circulation system, and can tunnel underground with small space and high burial depth.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The present invention will be further described with reference to the accompanying drawings and examples;
fig. 1 is a schematic diagram of a standby tube in a first state according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an embodiment of the present invention in which the standby tube is in a second state;
figure 3 is a schematic structural view of an energy dissipation pipe in an embodiment of the present invention;
figure 4 is a schematic diagram of a pressure relief energy dissipater in an embodiment of the present invention;
fig. 5 is a schematic diagram of the shield pressure relief device in the embodiment of the present invention.
Reference numerals:
the device comprises a circulation module 1, a slurry inlet pipe 2, a slurry discharge pipe 10 and a slurry injection pipeline 13;
a standby pipe 4;
a slurry feeding pump 3, a first slurry discharging pump 9, a second slurry discharging pump 8 and a shield installation position 6;
the energy dissipation pipe 5, the bypass pipe 12, the main pipe 11 and the valve 7;
the pressure relief energy dissipater 14, the pressure gauge 15, the ball valve 16, the pressure relief valve 17 and the emergency grouting pump 19;
a waste slurry recovery device 18 and a shield pressure relief device 20.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means is one or more, a plurality of means is at least two, and the terms greater than, less than, exceeding, etc. are understood as excluding the number, and the terms above, below, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the terms in the present invention by combining the specific contents of the technical solution.
Referring to fig. 1 to 5, the mud circulation system according to the embodiment of the first aspect of the present invention is applied to a shield machine, and includes a circulation module 1, an energy dissipation pipe 5, a plurality of pipelines, and a plurality of spare pipes 4.
The circulation module 1 comprises a pulp inlet and a pulp outlet, wherein the pulp inlet is provided with a pulp inlet pipe 2, and the pulp outlet is provided with a pulp outlet pipe 10; it will be appreciated that the circulation module 1 is part of a mud station for circulating mud and mud. The slurry inlet pipe 2 is matched with the slurry discharge pipe 10 to ensure the normal work of the shield machine. Specifically, a sealing partition plate is arranged behind a cutter disc of a mechanical shield, muddy water prepared by mixing water, clay and additives is pressed into a muddy water bin through a conveying pipeline, a muddy water pressure chamber and a mud film supporting tunnel face are formed when the muddy water is filled in the whole muddy water bin and has certain pressure, excavated soil and mud are mixed and conveyed to a ground mud treatment system through a mud pump, when the shield is propelled, soil sand cut by a rotary cutter disc is stirred through a stirring device to form high-concentration muddy water, the mud is conveyed to a ground mud-water separation system through the mud pump, muck and water are separated and then sent back to the muddy water bin again, and the mud is separated and adjusted through a series of devices and then recycled.
The energy dissipation pipe 5 is arranged close to the slurry inlet pipe 2, so that the prepared slurry is delivered out at a slurry station, and delivered into a soil bin of the shield machine after being subjected to opposite-impact energy dissipation through the energy dissipation pipe 5, and at the moment, the water hammer effect caused by high fall in slurry circulation is remarkably reduced, and the sealing of a tunnel portal cannot be impacted excessively.
The pipelines are respectively connected with the slurry inlet pipe 2, the slurry discharge pipe 10 and the energy dissipation pipe 5 to form a loop, and liquid such as slurry can be ensured to flow between the circulation module 1 and the shield machine in a reciprocating and circulating mode.
The pump module is arranged in a loop and used for pressurizing liquid and ensuring the normal work of slurry circulation and the shield machine.
With particular reference to figures 1 to 2, the reserve pipe 4 is arranged between the grout inlet pipe 2 and the energy dissipating pipe 5, the reserve pipe 4 and the grout inlet pipe 2 have a first state of connection and a second state of disconnection, and at least one reserve pipe 4 in the first state can extend the length of the pipeline between the grout inlet pipe 2 and the energy dissipating pipe 5. It should be noted that, in order to further reduce the influence of the water hammer effect, the spare pipe 4 may be selectively used, and when the shield is started, further buffering is required, and an appropriate number of spare pipes 4 are connected to the slurry inlet pipe 2, so that the slurry can pass through a preset length of pipeline before entering the energy dissipation pipe 5. When the pressure of slurry falling is not large, the standby pipe 4 is disconnected from the slurry inlet pipe 2, and the normal mode is entered.
By installing the energy dissipation pipe 5 at the slurry inlet pipe 2, when the slurry is tunneled and circulated, the slurry starts from the slurry station, is impacted through the energy dissipation pipe 5 and is buffered at a proper position through the standby pipe 4, the pressure of the slurry falling is reduced, the effects of water hammer, impact cushion and the like when the shield machine deep shaft starts are obviously reduced, and bin explosion and damage to water stop sealing of a tunnel door during starting are prevented.
In some embodiments of the present invention, with particular reference to fig. 3, the energy dissipation pipe 5 comprises a bypass pipe 12 and a main pipe 11, the main pipe 11 connects the loop, the two ends of the bypass pipe 12 respectively communicate with the two preset positions of the main pipe 11, and at least one valve 7 is arranged between the two preset positions. The energy dissipating pipe 5 is configured by coupling the bypass pipe 12 and the main pipe 11, and the slurry falling at a high drop height can be buffered by the branched structure. Further, the provision of the valve 7 enables adjustment of the through-flow cross-section variation of the main pipe 11, thereby further causing pressure loss by adjusting the local resistance to achieve a damping effect, wherein the adjustment of the valve 7 can be adjusted according to the actual situation to control the pressure in the pipe. The bypass pipe 12 is manufactured by butt welding of steel plates, so that the strength is ensured, and the effect of buffering slurry falling under high fall is realized.
In some embodiments of the present invention, with further reference to fig. 3, the mud circulation system further comprises a hydraulic control module, the hydraulic control module comprises a sensor, the sensor is used for detecting the flow in the main pipe 11, the hydraulic control module is used for receiving the information of the sensor, and the hydraulic control is used for the module control valve 7. It should be noted that the pressure condition in the pipeline can be monitored and controlled in real time through the hydraulic control module, if on the initial well wall, the sensor can detect a higher pressure, the hydraulic control system controls the valve 7 opening of the valve 7 according to information transmitted from the sensor so as to adjust the through-flow section of the main pipe 11 to buffer slurry falling with a high drop, along with the advance of the initial tunneling mileage, the pressure of the slurry falling is not large, the valve 7 can be opened after the flow circulation parameters step into normal, the circulation flow is improved, and the tunneling efficiency is improved. Preferably, two valves 7 may be provided.
In some embodiments of the utility model, specifically refer to fig. 1 to 2, the pump module includes the slurry feeding pump 3 and the first slurry discharging pump 9, and partial pipeline sets up respectively at slurry feeding pump 3 and first slurry discharging pump 9, makes slurry feeding pump 3 be connected with advance thick liquid pipe 2, and slurry feeding pump 3 is connected with energy dissipation pipe 5 or slurry feeding pump 3 is connected with reserve pipe 4, and first slurry discharging pump 9 is connected with row thick liquid pipe 10, and it has shield structure installation position 6 to reserve between first slurry discharging pump 9 and the energy dissipation pipe 5. It can be understood that the slurry feeding pump 3 provides a power source for slurry feeding, the first slurry discharging pump 9 provides a power source for slurry discharging, and the arrangement of the pipelines can be operated regularly according to actual installation conditions, and is not further limited herein, and normal circulation of slurry can be realized after the pipelines are installed. The shield installation position 6 is used for being connected with a shield machine so as to enable the shield machine to work normally.
Referring specifically to fig. 1 to 2, the pump module further includes a second slurry discharge pump 8, and a part of the pipeline is disposed between the first slurry discharge pump 9 and the second slurry discharge pump 8, so that the first slurry discharge pump 9 is connected to the second slurry discharge pump 8, and the shield installation site 6 is disposed between the second slurry discharge pump 8 and the energy dissipation pipe 5. And a second slurry discharging pump 8 is arranged to further improve the circulation flow so as to improve the tunneling efficiency of the shield tunneling machine.
In some embodiments of the present invention, referring specifically to fig. 5, the shield installation site is configured with a shield pressure relief device 20, and the shield pressure relief device 20 is used for energy dissipation and pressure relief of the circulation module after the shield machine enters the tunnel. Specifically, the shield pressure relief device 20 may include a pneumatic V-shaped ball valve 16, one end of which is installed in a partition hole of the shield machine, and the other end of which is connected to a rear supporting trolley or a waste slurry recovery device 18, so as to facilitate slurry discharge. The pneumatic V-shaped valve can be set as an automatic control valve, the deviation value of the actual pressure in the bin exceeding the set pressure is converted into an analog current signal to control the opening of the valve, automatic pressure relief in the bin is realized, and the valve is completely closed when the actual pressure in the bin is lower than the set value. And a control program of the pneumatic V-shaped ball valve 16 can be newly added in the central control system, the main control can display the opening percentage of the valve and cooperate with the soil bin sensor to display the pressure value of the soil bin, and the pressure is adjusted along with the pressure maintaining and pressurizing conditions of the shield tunneling soil bin. Further, the shield installation position 6 is provided with a trolley matched with the shield machine, and the trolley can be used for bearing the shield machine so as to drive the shield machine.
The utility model discloses an in some embodiments, specifically refer to FIG. 4, mud circulation system still includes pressure release energy dissipater 14, and the circulation module disposes pre-buried slip casting pipeline, is equipped with emergent slip casting pump 19 on the slip casting pipeline, and to the pressure promotion in the twinkling of an eye that probably exists when the broken portal continuous wall of blade disc causes the destruction to the portal is sealed and the potential safety hazard in wearing the storehouse, utilizes pre-buried slip casting pipe connection pressure release energy dissipater 14 can effectively solve. The pressure relief energy dissipater 14 comprises a ball valve 16, a pressure gauge 15 for monitoring pressure and a pressure relief valve 17 with a set value not lower than 6bar, an emergency grouting pump 19 is arranged in front of the pressure relief valve 17 to inject under the condition that the tunnel portal leaks after the duct piece is assembled on the tunnel portal, and an outlet of a grouting pipeline is provided with a waste slurry recovery device 18.
Referring to fig. 1 to 5, the utility model discloses shield structure machine of second aspect embodiment, including the utility model discloses the mud circulation system of first aspect embodiment, this shield structure machine has used foretell mud circulation system, can tunnel in the underground of little space, high buried depth.
Referring to fig. 1 to 5, a method for using a mud circulation system according to an embodiment of the third aspect of the present invention includes the following steps:
s1: confirming the tunneling depth of the ground circulation module 1 and the underground shield machine, selecting at least one spare pipe 4 to be switched to a first state according to the height difference, and enabling the at least one spare pipe 4 to be communicated with the slurry inlet pipe 2;
s2: starting the circulation module 1, delivering the prepared slurry through the pump module, delivering the slurry through the slurry inlet pipe 2, performing preliminary energy dissipation through the pressure relief and energy dissipation device 14, allowing the slurry to flow through the standby pipe 4 and the energy dissipation pipe 5 for further energy dissipation, and delivering the slurry into a soil warehouse of the shield machine through the shield pressure relief device 20 so as to enable the shield machine to tunnel a preset mileage;
s3: after the flow circulation parameters step in normally, adjusting a pressure relief energy dissipation device 14, a shield pressure relief device 20 and a valve 7 on an energy dissipation pipe 5 to improve circulation flow and accelerate the tunneling speed of a shield machine;
s4: after the shield machine continues to tunnel for a preset mileage, the standby pipe 4 is switched to a second state, the valve 7 on the energy dissipation pipe 5 is normally opened, the pressure relief energy dissipation device 14 and the shield pressure relief device 20 are set to be in a stable preset valve opening degree, and the shield machine enters a normal mode.
The slurry circulation system is provided with the standby pipe 4 and the energy dissipation pipe 5, so that the water hammer effect caused by the high fall of slurry circulation is remarkably reduced, the state of the standby pipe 4 is selectively adjusted according to different tunneling mileage, the valve 7 on the energy dissipation pipe 5 is adjusted, the effects of water hammer, impact cushion and the like when the shield machine starts in a deep shaft are remarkably reduced on the premise of ensuring the tunneling efficiency, and the effects of bin explosion and damage to water stop sealing of a tunnel door when the shield machine starts are prevented.
All possible combinations of the technical features of the embodiments described above may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. A mud circulation system, comprising:
the circulation module comprises a slurry inlet and a slurry outlet, wherein a slurry inlet pipe is arranged on the slurry inlet, and a slurry outlet pipe is arranged on the slurry outlet;
the energy dissipation pipe is arranged close to the slurry inlet pipe;
the pipelines are used for respectively connecting the slurry inlet pipe, the slurry discharge pipe and the energy dissipation pipe to form a loop;
a pump module disposed in the circuit for pressurizing the liquid;
the standby pipes are arranged between the slurry inlet pipe and the energy dissipation pipe, a first connection state and a second disconnection state are formed between the standby pipes and the slurry inlet pipe, and the length of a pipeline between the slurry inlet pipe and the energy dissipation pipe can be prolonged when at least one standby pipe is in the first state.
2. A mud circulation system according to claim 1, wherein: the energy dissipation pipe comprises a bypass pipe and a main pipe, the main pipe is connected with the loop, two ends of the bypass pipe are respectively communicated with two preset positions of the main pipe, and at least one valve is arranged between the two preset positions.
3. A mud circulation system according to claim 2, wherein: the mud circulation system further comprises a hydraulic control module, wherein the hydraulic control module comprises a sensor, the sensor is used for detecting the flow in the main pipe, the hydraulic control module is used for receiving the information of the sensor, and the hydraulic control module is used for controlling the valve.
4. A mud circulation system according to claim 1, wherein: the pump module includes the slurry feeding pump and the first slurry discharging pump, and the part the pipeline sets up respectively the slurry feeding pump with the first slurry discharging pump makes the slurry feeding pump with advance thick liquid union coupling, the slurry feeding pump with energy dissipation union coupling, the first slurry discharging pump with arrange thick liquid union coupling, the first slurry discharging pump with it constructs the installation position to reserve between the energy dissipation pipe.
5. The mud circulation system of claim 4, wherein: the pump module still includes the second and arranges the stuff pump, and the part the pipeline sets up first row of stuff pump with the second is arranged the stuff pump, makes first row of stuff pump with the second is arranged the stuff pump and is connected, the shield structure installation position sets up the second arrange the stuff pump with between the energy dissipation pipe.
6. A mud circulation system according to claim 4, wherein: the shield installation position is provided with a shield pressure relief device, and the shield pressure relief device is used for energy dissipation and pressure relief of the circulation module after the shield machine enters the tunnel.
7. A mud circulation system according to any one of claims 1 to 6, wherein: the mud circulation system further comprises a pressure relief energy dissipation device, the circulation module is provided with a pre-buried grouting pipeline, and the pressure relief energy dissipation device is used for relieving pressure and dissipating energy for the grouting pipeline.
8. A mud circulation system according to claim 7, wherein: the pressure relief energy dissipater comprises a ball valve, a pressure gauge and a pressure relief valve, an emergency grouting pump is arranged on the grouting pipeline, and the emergency grouting pump is arranged in front of the pressure relief valve.
9. A mud circulation system according to claim 7, wherein: and an outlet of the grouting pipeline is provided with a waste slurry recovery device.
10. A shield tunneling machine, comprising: a mud circulation system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221638257.6U CN217813477U (en) | 2022-06-28 | 2022-06-28 | Slurry circulation system and shield tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221638257.6U CN217813477U (en) | 2022-06-28 | 2022-06-28 | Slurry circulation system and shield tunneling machine |
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| Publication Number | Publication Date |
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| CN217813477U true CN217813477U (en) | 2022-11-15 |
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| CN202221638257.6U Active CN217813477U (en) | 2022-06-28 | 2022-06-28 | Slurry circulation system and shield tunneling machine |
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| CN (1) | CN217813477U (en) |
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- 2022-06-28 CN CN202221638257.6U patent/CN217813477U/en active Active
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