Slurry discharging device for slurry balance shield machine

Abstract

The utility model provides a slurry discharging device for a slurry balance shield tunneling machine, which comprises a slurry inlet passage, a slurry outlet passage, a slurry outlet passage and a slurry outlet passage, the liquid inlet end of a first slurry inlet branch pipe and the liquid inlet end of a second slurry inlet branch pipe are respectively filled with first slurry, and the liquid outlet end of the first slurry inlet branch pipe is connected with the liquid inlet end of a slurry bin in a shield tunneling system; the liquid outlet end of the second slurry inlet branch pipe is connected with the liquid inlet end of an air cushion bin in the shield system; the liquid inlet end of the first slurry discharge branch pipe is connected with the liquid outlet end of the muddy water bin, the liquid inlet end of the second slurry discharge branch pipe is connected with the liquid outlet end of the air cushion bin, and the liquid outlet end of the first slurry discharge branch pipe and the liquid outlet end of the second slurry discharge branch pipe discharge second slurry respectively; wherein the first slurry inlet branch pipe is communicated with the second slurry inlet branch pipe, and the first slurry discharge branch pipe is communicated with / or the second slurry discharge branch pipe. According to the slurry discharging device for the slurry balance shield tunneling machine, different slurry discharging modes are achieved according to different slurry states, so that the slurry discharging device adapts to complex and changeable geological conditions, and diversified construction requirements are met.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of shield slurry discharge, and particularly relates to a slurry discharge device for a slurry balance shield machine. BACKGROUND

[0002] In modern tunnel excavation engineering, a slurry balance shield machine is widely used as an efficient and safe construction equipment. However, the existing slurry balance shield machine has certain limitations in the design and working mode of the slurry discharge pipeline. The traditional shield machine is usually equipped with only a single type of slurry discharge pipeline, and the working mode is relatively fixed. This leads to a great impact on the adaptability and working efficiency of the shield machine when facing complex and variable geological conditions and diversified construction requirements. For example, under certain geological conditions (high-permeability stratum, mixed stratum of high and low permeability, etc.), the single slurry discharge pipeline may not be able to timely and effectively discharge the muck, which is prone to cause problems such as pipe blockage and pressure imbalance, thereby affecting the construction progress and engineering quality, and even may cause safety accidents. SUMMARY

[0003] The present disclosure aims to at least partially solve one of the technical problems in the related art.

[0004] To this end, the purpose of the present disclosure is to provide a slurry discharge device for a slurry balance shield machine.

[0005] To achieve the above purpose, the present disclosure provides a slurry discharge device for a slurry balance shield machine, comprising: a slurry inlet passage, the slurry inlet passage comprising: a first slurry inlet sub-pipe and a second slurry inlet sub-pipe, a liquid inlet end of the first slurry inlet sub-pipe and a liquid inlet end of the second slurry inlet sub-pipe are respectively connected to a first slurry, a liquid outlet end of the first slurry inlet sub-pipe is connected to a liquid inlet end of a slurry chamber in a shield system, and a liquid outlet end of the second slurry inlet sub-pipe is connected to a liquid inlet end of a gas cushion chamber in the shield system; a slurry discharge passage, the slurry discharge passage comprising: a first slurry discharge sub-pipe and a second slurry discharge sub-pipe, a liquid inlet end of the first slurry discharge sub-pipe is connected to a liquid outlet end of the slurry chamber, and a liquid inlet end of the second slurry discharge sub-pipe is connected to a liquid outlet end of the gas cushion chamber, a liquid outlet end of the first slurry discharge sub-pipe and a liquid outlet end of the second slurry discharge sub-pipe respectively discharge a second slurry; wherein the first slurry inlet sub-pipe and the second slurry inlet sub-pipe are connected, and the first slurry discharge sub-pipe and / or the second slurry discharge sub-pipe are connected.

[0006] Optionally, the slurry discharge passage further comprises: a first valve body, the first valve body is arranged on the first slurry discharge sub-pipe, and the first valve body is used for selectively connecting the first slurry discharge sub-pipe and adjusting the flow of the first slurry discharge sub-pipe; a second valve body, the second valve body is arranged on the second slurry discharge sub-pipe, and the second valve body is used for selectively connecting the second slurry discharge sub-pipe and adjusting the flow of the second slurry discharge sub-pipe.

[0007] Optionally, the slurry discharge passage further comprises: a first flow meter, a detection end of the first flow meter is arranged on the first slurry discharge branch pipe, and the first flow meter is used for detecting the flow of the first slurry discharge branch pipe; and a second flow meter, a detection end of the second flow meter is arranged on the second slurry discharge branch pipe, and the second flow meter is used for detecting the flow of the second slurry discharge branch pipe.

[0008] Optionally, the slurry discharge passage further comprises: a first flow meter, a detection end of the first flow meter is arranged on the first slurry discharge branch pipe, and the first flow meter is used for detecting the flow of the first slurry discharge branch pipe; and a second flow meter, a detection end of the second flow meter is arranged on the second slurry discharge branch pipe, and the second flow meter is used for detecting the flow of the second slurry discharge branch pipe.

[0009] Optionally, the slurry discharge passage further comprises: a first flow meter, a detection end of the first flow meter is arranged on the first slurry discharge branch pipe, and the first flow meter is used for detecting the flow of the first slurry discharge branch pipe; and a second flow meter, a detection end of the second flow meter is arranged on the second slurry discharge branch pipe, and the second flow meter is used for detecting the flow of the second slurry discharge branch pipe.

[0010] Optionally, the slurry discharge passage further comprises: a first flow meter, a detection end of the first flow meter is arranged on the first slurry discharge branch pipe, and the first flow meter is used for detecting the flow of the first slurry discharge branch pipe; and a second flow meter, a detection end of the second flow meter is arranged on the second slurry discharge branch pipe, and the second flow meter is used for detecting the flow of the second slurry discharge branch pipe.

[0011] Optionally, the slurry discharging device further comprises a first bypass passage, the first bypass passage comprising a first bypass pipeline and a seventh valve body, the first bypass pipeline having an inlet connected to the slurry inlet main pipe and located between the slurry inlet pump and the fifth valve body, and having an outlet connected to the slurry discharging main pipe and located at an end of the sixth valve body away from the slurry discharging pump, the seventh valve body being arranged on the first bypass pipeline and used for selectively conducting the first bypass pipeline and adjusting the flow of the first bypass pipeline.

[0012] Optionally, the slurry discharging device further comprises a backwashing passage, the backwashing passage comprising a backwashing pipeline and an eighth valve body, the backwashing pipeline having an inlet connected to the slurry inlet main pipe and located at an end of the fifth valve body away from the slurry inlet pump, and having an outlet connected to the slurry discharging main pipe and located between the sixth valve body and the slurry discharging pump, the eighth valve body being arranged on the backwashing pipeline and used for selectively conducting the backwashing pipeline and adjusting the flow of the backwashing pipeline.

[0013] Optionally, the slurry discharging device further comprises a second bypass passage, the second bypass passage comprising a second bypass pipeline, a ninth valve body and a booster pump, the second bypass pipeline having an inlet connected to the slurry inlet main pipe and located between the slurry inlet pump and the fifth valve body, and having an outlet connected to the slurry discharging main pipe and located at an end of the sixth valve body away from the slurry discharging pump, the ninth valve body and the booster pump being arranged on the second bypass pipeline respectively, the ninth valve body being used for selectively conducting the second bypass pipeline.

[0014] Optionally, the slurry discharging device further comprises a monitoring module, the monitoring module comprising a first density meter, a first pressure sensor, a first liquid level sensor, a second density meter, a second pressure sensor and a second liquid level sensor; wherein the detection end of the first density meter is arranged in the slurry tank, and the first density meter is used for detecting the density of the slurry tank, the detection end of the first pressure sensor is arranged in the slurry tank, and the first pressure sensor is used for detecting the pressure of the slurry tank, the detection end of the first liquid level sensor is arranged in the slurry tank, and the first liquid level sensor is used for detecting the liquid level of the slurry tank; the detection end of the second density meter is arranged in the air cushion tank, and the second density meter is used for detecting the density of the air cushion tank, the detection end of the second pressure sensor is arranged in the air cushion tank, and the second pressure sensor is used for detecting the pressure of the air cushion tank, the detection end of the second liquid level sensor is arranged in the air cushion tank, and the second liquid level sensor is used for detecting the liquid level of the air cushion tank.

[0015] The technical solutions provided by the disclosure can have the following beneficial effects.

[0016] Through cooperation of the first and second slurry inlet branch pipes and the first and second slurry outlet branch pipes, different slurry discharge modes can be realized according to different slurry states, so as to adapt to complex geological conditions and meet diversified construction requirements, thereby effectively improving the construction quality and work efficiency of the shield system.

[0017] Additional aspects and advantages of the disclosure will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the disclosure will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 is a structural schematic diagram of a slurry discharge device for a slurry balance shield machine according to an embodiment of the disclosure;

[0020] As shown in the figure: 1, slurry inlet passage, 11, first slurry inlet branch pipe, 12, second slurry inlet branch pipe, 13, third valve body, 14, fourth valve body, 15, third flow meter, 16, fourth flow meter, 17, slurry inlet main pipe, 18, slurry inlet pump, 19, fifth valve body;

[0021] 2, slurry discharge passage, 21, first slurry discharge branch pipe, 22, second slurry discharge branch pipe, 23, first valve body, 24, second valve body, 25, first flow meter, 26, second flow meter, 27, slurry discharge main pipe, 28, sixth valve body, 29, slurry discharge pump;

[0022] 3, first bypass passage, 31, first bypass pipe, 32, seventh valve body;

[0023] 4, backwashing passage, 41, backwashing pipe, 42, eighth valve body;

[0024] 5, second bypass passage, 51, second bypass pipe, 52, ninth valve body, 53, booster pump;

[0025] 6, monitoring module, 61, first density meter, 62, first pressure sensor, 63, first liquid level sensor, 64, second density meter, 65, second pressure sensor, 66, second liquid level sensor;

[0026] 100, slurry tank, 200, air cushion tank. DETAILED DESCRIPTION

[0027] Embodiments of the present disclosure are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals and characters throughout the figures denote the same or like elements or components. The embodiments described below are exemplary and are not intended to be limiting. Rather, the present disclosure encompasses all alternatives, modifications and equivalents falling within the spirit and scope of the appended claims.

[0028] As shown in Figure 1 The present disclosure provides a slurry discharging device for a slurry balance shield tunneling machine, which comprises a slurry inlet passage 1 and a slurry discharge passage 2. The slurry inlet passage 1 comprises a first slurry inlet sub-pipe 11 and a second slurry inlet sub-pipe 12. The liquid inlet ends of the first slurry inlet sub-pipe 11 and the second slurry inlet sub-pipe 12 are respectively connected to a first slurry, and the liquid outlet end of the first slurry inlet sub-pipe 11 is connected to the liquid inlet end of a slurry tank 100 in a shield system, and the liquid outlet end of the second slurry inlet sub-pipe 12 is connected to the liquid inlet end of an air cushion tank 200 in the shield system. The slurry discharge passage 2 comprises a first slurry discharge sub-pipe 21 and a second slurry discharge sub-pipe 22. The liquid inlet end of the first slurry discharge sub-pipe 21 is connected to the liquid outlet end of the slurry tank 100, and the liquid inlet end of the second slurry discharge sub-pipe 22 is connected to the liquid outlet end of the air cushion tank 200. The liquid outlet ends of the first slurry discharge sub-pipe 21 and the second slurry discharge sub-pipe 22 are respectively connected to a second slurry. The first slurry inlet sub-pipe 11 and the second slurry inlet sub-pipe 12 are connected, and the first slurry discharge sub-pipe 21 and / or the second slurry discharge sub-pipe 22 are connected.

[0029] It can be understood that, since the liquid inlet ends of the first slurry inlet sub-pipe 11 and the second slurry inlet sub-pipe 12 are respectively connected to a first slurry, and the liquid outlet end of the first slurry inlet sub-pipe 11 is connected to the liquid inlet end of a slurry tank 100 in a shield system, and the liquid outlet end of the second slurry inlet sub-pipe 12 is connected to the liquid inlet end of an air cushion tank 200 in the shield system, the first slurry can enter the slurry tank 100 in the shield system through the first slurry inlet sub-pipe 11, and enter the air cushion tank 200 in the shield system through the second slurry inlet sub-pipe 12. Since the liquid inlet end of the first slurry discharge sub-pipe 21 is connected to the liquid outlet end of the slurry tank 100, and the liquid inlet end of the second slurry discharge sub-pipe 22 is connected to the liquid outlet end of the air cushion tank 200, the liquid outlet ends of the first slurry discharge sub-pipe 21 and the second slurry discharge sub-pipe 22 are respectively connected to a second slurry, so that the second slurry in the slurry tank 100 can be discharged through the first slurry discharge sub-pipe 21, and the second slurry in the air cushion tank 200 can be discharged through the second slurry discharge sub-pipe 22.

[0030] When the first slurry inlet branch pipe 11 and the second slurry inlet branch pipe 12 are turned on, and the first slurry outlet branch pipe 21 is turned on, the first slurry can be transported to the slurry tank 100 and the air cushion tank 200, and the second slurry mixed by the first slurry and the muck is discharged from the slurry tank 100, so as to realize the slurry discharge mode of interval control and direct discharge, and further adapt to the shield working condition of low permeability stratum.

[0031] When the first slurry inlet branch pipe 11 and the second slurry inlet branch pipe 12 are turned on, and the second slurry outlet branch pipe 22 is turned on, the first slurry can be transported to the slurry tank 100 and the air cushion tank 200, and the second slurry mixed by the first slurry and the muck is discharged from the air cushion tank 200, so as to realize the slurry discharge mode of interval control and interval discharge, and further adapt to the shield working condition of high permeability stratum.

[0032] When the first slurry inlet branch pipe 11 and the second slurry inlet branch pipe 12 are turned on, and the second slurry outlet branch pipe 22 and the second slurry outlet branch pipe 22 are turned on, the first slurry can be transported to the slurry tank 100 and the air cushion tank 200, and the second slurry mixed by the first slurry and the muck is discharged from the air cushion tank 200 and the slurry tank 100, so as to realize the slurry discharge mode of interval control and mixing, and further adapt to the shield working condition of mixed stratum of low permeability and high permeability.

[0033] Therefore, through the cooperation of the first slurry inlet branch pipe 11, the second slurry inlet branch pipe 12, the first slurry outlet branch pipe 21 and the second slurry outlet branch pipe 22, different slurry discharge modes can be realized according to different slurry states, so as to adapt to complex geological conditions and meet diversified construction requirements, and further effectively improve the construction quality and working efficiency of the shield system.

[0034] It should be noted that the slurry balance shield machine is widely used in various tunnel construction, which uses the mixed slurry suspension (mud) as the supporting material, and forms a water-impermeable mud film through slurry penetration to convert the slurry pressure into effective supporting force to balance the water and soil pressure of the excavation face.

[0035] When the shield machine passes through long-distance stratum with high water pressure and high permeability, the slurry is easy to be filtered in large amount, which leads to the instability of the excavation face, and further causes collapse accident. The high permeability stratum usually refers to the stratum with extremely strong water permeability and fast underground water flow rate (such as pebble stratum, gravel layer, strongly weathered fissured rock stratum, karst cave developed stratum, etc.), which is characterized by large porosity and good connectivity between particles, allowing water and fluid to quickly penetrate. This kind of stratum poses significant challenges to the stability, sealing and safety of shield construction.

[0036] Characteristics of high permeability stratum: intense underground water activity: high pore water pressure in stratum, easy to form gushing or spouting; coarse particles, poor cementation: no cohesion between particles in gravel layer or pebble layer, poor self-stability of excavation face; shield sealing system is easy to fail: under slurry balance mode, slurry is easy to leak in soil, leading to pressure imbalance.

[0037] Low-permeability strata refer to strata with extremely low permeability and very slow groundwater flow rates (such as clay, silty clay, silty soil, dense mudstone, and weakly weathered intact bedrock). They are characterized by low porosity, poor interparticle connectivity, and difficulty for water and fluids to penetrate.

[0038] Characteristics of low-permeability strata: poor groundwater flow: pore water pressure is transmitted slowly, making it difficult to drain through infiltration; fine particles and strong cementation: high proportion of fine particles (such as clay and silt), resulting in strong soil cohesion and good self-stability; low permeability but high plasticity: cohesive strata are prone to plastic flow, but have extremely weak permeability.

[0039] The slurry discharge system in this embodiment integrates slurry inlet channel 1 and slurry outlet channel 2 to achieve dynamic switching or coordinated operation of multiple modes, thereby improving adaptability to complex strata, slag removal efficiency, and construction safety. Through dynamic switching of multiple modes, it covers tunneling operations from low-permeability to high-permeability strata.

[0040] The slurry inlet passage 1 is used to introduce the first slurry into the mud-water tank 100 and the air cushion tank 200. The specific types of the first slurry inlet branch pipe 11 and the second slurry inlet branch pipe 12 can be set according to actual needs and there is no restriction. For example, the first slurry inlet branch pipe 11 and the second slurry inlet branch pipe 12 can be set as two sets, thereby forming a redundant design to ensure stable slurry inlet into the mud-water tank 100 and the air cushion tank 200.

[0041] The slurry discharge passage 2 is used to discharge the second slurry from the mud-water chamber 100 and the air cushion chamber 200. The specific types of the first slurry discharge branch pipe 21 and the second slurry discharge branch pipe 22 can be set according to actual needs and are not restricted.

[0042] like Figure 1 As shown, in some embodiments, the slurry discharge passage 2 further includes: a first valve body 23 and a second valve body 24. The first valve body 23 is disposed on the first slurry discharge branch pipe 21 and is used to selectively open the first slurry discharge branch pipe 21 and regulate the flow rate of the first slurry discharge branch pipe 21. The second valve body 24 is disposed on the second slurry discharge branch pipe 22 and is used to selectively open the second slurry discharge branch pipe 22 and regulate the flow rate of the second slurry discharge branch pipe 22.

[0043] It is understandable that when the first valve body 23 is turned on and the second valve body 24 is turned off, the second slurry, which is a mixture of the first slurry and the slag, is discharged from the mud and water chamber 100, thereby realizing the slurry discharge mode of indirect control and direct discharge, and thus adapting to the shield tunneling conditions of low permeability strata.

[0044] When the first valve body 23 is disconnected and the second valve body 24 is connected, the second slurry mixed by the first slurry and the muck is discharged from the air cushion bin 200, so as to realize the slurry discharge mode of interval control and interval discharge, and then adapt to the shield working condition of high permeability stratum.

[0045] When the first valve body 23 is connected and the second valve body 24 is connected, the second slurry mixed by the first slurry and the muck is discharged from the air cushion bin 200 and the slurry bin 100, so as to realize the slurry discharge mode of interval control and mixing, and then adapt to the shield working condition of mixed stratum of low permeability and high permeability.

[0046] It should be noted that based on the cooperation of the first valve body 23 and the second valve body 24, the switching of different modes can be realized, and the specific type of the first valve body 23 and the second valve body 24 can be set according to actual needs, which is not limited.

[0047] As shown in Figure 1 In some embodiments, the slurry discharge passage 2 further comprises: a first flow meter 25 and a second flow meter 26, the detection end of the first flow meter 25 is arranged on the first slurry discharge branch pipe 21, and the first flow meter 25 is used for detecting the flow of the first slurry discharge branch pipe 21, and the detection end of the second flow meter 26 is arranged on the second slurry discharge branch pipe 22, and the second flow meter 26 is used for detecting the flow of the second slurry discharge branch pipe 22.

[0048] It can be understood that since the detection end of the first flow meter 25 is arranged on the first slurry discharge branch pipe 21, the first flow meter 25 can detect the flow of the first slurry discharge branch pipe 21, so as to facilitate the precise control of the system by using the flow of the first slurry discharge branch pipe 21; since the detection end of the second flow meter 26 is arranged on the second slurry discharge branch pipe 22, the second flow meter 26 can detect the flow of the second slurry discharge branch pipe 22, so as to facilitate the precise control of the system by using the flow of the second slurry discharge branch pipe 22.

[0049] It should be noted that the first flow meter 25 is used for detecting the flow of the first slurry discharge branch pipe 21, and the specific type of the first flow meter 25 can be set according to actual needs, which is not limited.

[0050] The second flow meter 26 is used for detecting the flow of the second slurry discharge branch pipe 22, and the specific type of the second flow meter 26 can be set according to actual needs, which is not limited.

[0051] As shown in Figure 1As shown in the figure, in some embodiments, the pulp inlet passage 1 further comprises: a third valve body 13 and a fourth valve body 14, the third valve body 13 is arranged on the first pulp inlet branch pipe 11, and the third valve body 13 is used for selectively conducting the first pulp inlet branch pipe 11 and adjusting the flow of the first pulp inlet branch pipe 11, and the fourth valve body 14 is arranged on the second pulp inlet branch pipe 12, and the fourth valve body 14 is used for selectively conducting the second pulp inlet branch pipe 12 and adjusting the flow of the second pulp inlet branch pipe 12.

[0052] It can be understood that when the third valve body 13 is conducted and the fourth valve body 14 is conducted, the first pulp liquid can be transported to the slurry bin 100 and the air cushion bin 200, and cooperating with the opening adjustment of the third valve body 13 and the fourth valve body 14, the flow ratio between the slurry bin 100 and the air cushion bin 200 can be adjusted, so as to ensure the efficient operation of the system.

[0053] It should be noted that the specific type of the third valve body 13 and the fourth valve body 14 can be set according to actual needs, which is not limited.

[0054] As shown in the figure, Figure 1 As shown in the figure, in some embodiments, the pulp inlet passage 1 further comprises: a third flow meter 15 and a fourth flow meter 16, the detection end of the third flow meter 15 is arranged on the first pulp inlet branch pipe 11, and the third flow meter 15 is used for detecting the flow of the first pulp inlet branch pipe 11, and the detection end of the fourth flow meter 16 is arranged on the second pulp inlet branch pipe 12, and the fourth flow meter 16 is used for detecting the flow of the second pulp inlet branch pipe 12.

[0055] It can be understood that since the detection end of the third flow meter 15 is arranged on the first pulp inlet branch pipe 11, the third flow meter 15 can detect the flow of the first pulp inlet branch pipe 11, so as to facilitate the precise control of the system by using the flow of the first pulp inlet branch pipe 11; since the detection end of the fourth flow meter 16 is arranged on the second pulp inlet branch pipe 12, the fourth flow meter 16 can detect the flow of the second pulp inlet branch pipe 12, so as to facilitate the precise control of the system by using the flow of the second pulp inlet branch pipe 12.

[0056] It should be noted that the third flow meter 15 is used for detecting the flow of the first pulp inlet branch pipe 11, and the specific type of the third flow meter 15 can be set according to actual needs, which is not limited.

[0057] The fourth flow meter 16 is used for detecting the flow of the second pulp inlet branch pipe 12, and the specific type of the fourth flow meter 16 can be set according to actual needs, which is not limited.

[0058] As shown in the figure, Figure 1As shown, in some embodiments, the pulp feeding passage 1 further comprises: a pulp feeding main pipe 17, a pulp feeding pump 18 and a fifth valve body 19, the liquid inlet end of the pulp feeding main pipe 17 is connected to the first slurry, and the liquid outlet end of the pulp feeding main pipe 17 is connected to the liquid inlet end of the first pulp feeding branch pipe 11 and the liquid inlet end of the second pulp feeding branch pipe 12, respectively, the pulp feeding pump 18 and the fifth valve body 19 are sequentially arranged on the pulp feeding main pipe 17 along the direction from the liquid inlet end to the liquid outlet end of the pulp feeding main pipe 17, the fifth valve body 19 is used for selectively conducting the pulp feeding main pipe 17 and adjusting the flow of the pulp feeding main pipe 17.

[0059] The pulp discharging passage 2 further comprises: a pulp discharging main pipe 27, a sixth valve body 28 and a pulp discharging pump 29, the liquid inlet end of the pulp discharging main pipe 27 is connected to the liquid outlet end of the first pulp discharging branch pipe 21 and the liquid outlet end of the second pulp discharging branch pipe 22, respectively, and the liquid outlet end of the pulp discharging main pipe 27 is used for discharging the second slurry, the sixth valve body 28 and the pulp discharging pump 29 are sequentially arranged on the pulp discharging main pipe 27 along the direction from the liquid inlet end to the liquid outlet end of the pulp discharging main pipe 27, the sixth valve body 28 is used for selectively conducting the pulp discharging main pipe 27 and adjusting the flow of the pulp discharging main pipe 27.

[0060] It can be understood that, since the liquid inlet end of the pulp feeding main pipe 17 is connected to the first slurry, and the liquid outlet end of the pulp feeding main pipe 17 is connected to the liquid inlet end of the first pulp feeding branch pipe 11 and the liquid inlet end of the second pulp feeding branch pipe 12, respectively, the first slurry can enter the slurry chamber 100 of the shield system through the pulp feeding main pipe 17 and the first pulp feeding branch pipe 11, and enter the air cushion chamber 200 of the shield system through the pulp feeding main pipe 17 and the second pulp feeding branch pipe 12; since the liquid inlet end of the pulp discharging main pipe 27 is connected to the liquid outlet end of the first pulp discharging branch pipe 21 and the liquid outlet end of the second pulp discharging branch pipe 22, respectively, and the liquid outlet end of the pulp discharging main pipe 27 is used for discharging the second slurry, the second slurry in the slurry chamber 100 can be discharged through the first pulp discharging branch pipe 21 and the pulp discharging main pipe 27, and the second slurry in the air cushion chamber 200 can be discharged through the second pulp discharging branch pipe 22 and the pulp discharging main pipe 27.

[0061] Since the pulp feeding pump 18 and the fifth valve body 19 are sequentially arranged on the pulp feeding main pipe 17 along the direction from the liquid inlet end to the liquid outlet end of the pulp feeding main pipe 17, the first slurry can be pumped by the pulp feeding pump 18 and controlled by the fifth valve body 19 to realize the on-off control and the opening degree adjustment, thereby meeting the precise operation requirements of the system.

[0062] Since the sixth valve body 28 and the pulp discharging pump 29 are sequentially arranged on the pulp discharging main pipe 27 along the direction from the liquid inlet end to the liquid outlet end of the pulp discharging main pipe 27, the second slurry can be pumped by the pulp discharging pump 29 and controlled by the sixth valve body 28 to realize the on-off control and the opening degree adjustment, thereby meeting the precise operation requirements of the system.

[0063] It should be noted that the inlet pump 18 is used for the pressurized delivery of the first slurry, and the discharge pump 29 is used for the pressurized delivery of the second slurry. The specific types of the inlet pump 18 and the discharge pump 29 can be set according to actual needs, and are not limited in this regard.

[0064] The fifth valve body 19 is used for on-off control and flow regulation of the first slurry main line, and the sixth valve body 28 is used for on-off control and flow regulation of the second slurry main line. The specific types of the fifth valve body 19 and the sixth valve body 28 can be set according to actual needs, and are not limited in this regard.

[0065] For the inter-control and inter-discharge slurry discharge mode, the inter-control and direct-discharge slurry discharge mode, and the inter-control and mixed slurry discharge mode, the fifth valve body 19 and the sixth valve body 28 are always kept conductive, and the flow can be regulated by controlling the opening degree.

[0066] As shown in FIG. 1, Figure 1 In some embodiments, the slurry discharge device further comprises a first bypass passage 3, which comprises a first bypass pipeline 31 and a seventh valve body 32. The inlet end of the first bypass pipeline 31 is connected to the inlet slurry main pipe 17 and located between the inlet pump 18 and the fifth valve body 19, and the outlet end of the first bypass pipeline 31 is connected to the discharge slurry main pipe 27 and located at the end of the sixth valve body 28 away from the discharge pump 29. The seventh valve body 32 is arranged on the first bypass pipeline 31, and is used for selectively conducting the first bypass pipeline 31 and regulating the flow of the first bypass pipeline 31.

[0067] It can be understood that, since the inlet end of the first bypass pipeline 31 is connected to the inlet slurry main pipe 17 and located between the inlet pump 18 and the fifth valve body 19, and the outlet end of the first bypass pipeline 31 is connected to the discharge slurry main pipe 27 and located at the end of the sixth valve body 28 away from the discharge pump 29, and the seventh valve body 32 is arranged on the first bypass pipeline 31, when the seventh valve body 32 is conductive, part of the first slurry in the inlet slurry main pipe 17 can enter the discharge passage 2 through the first bypass pipeline 31, and by controlling the opening degree of the seventh valve body 32, the flow of the inlet slurry main pipe 17 can also be regulated, thereby meeting the precise operation requirements of the system.

[0068] It should be noted that the seventh valve body 32 is used for bypass control of the inlet slurry, and the specific type of the seventh valve body 32 can be set according to actual needs, and is not limited in this regard.

[0069] As shown in FIG. 1, Figure 1As shown, in some embodiments, the slurry discharge device further includes a backwash passage 4, which includes a backwash pipe 41 and an eighth valve body 42. The inlet end of the backwash pipe 41 is connected to the slurry main pipe 17 and is located at the end of the fifth valve body 19 away from the slurry pump 18. The outlet end of the backwash pipe 41 is connected to the slurry discharge main pipe 27 and is located between the sixth valve body 28 and the slurry discharge pump 29. The eighth valve body 42 is disposed on the backwash pipe 41 and is used to selectively open the backwash pipe 41 and adjust the flow rate of the backwash pipe 41.

[0070] Understandably, since the inlet end of the backwash pipe 41 is connected to the slurry main pipe 17 and located at the end of the fifth valve body 19 away from the slurry pump 18, and the outlet end of the backwash pipe 41 is connected to the slurry discharge main pipe 27 and located between the sixth valve body 28 and the slurry discharge pump 29, and the eighth valve body 42 is installed on the backwash pipe 41, when the fifth valve body 19 and the sixth valve body 28 are disconnected, and the seventh valve body 32 and the eighth valve body 42 are connected, the first slurry in the slurry main pipe 17 can enter the mud-water tank 100 and the air cushion tank 200 through the first bypass pipe 31, and be discharged through the backwash passage 4 and the slurry discharge main pipe 27, thereby realizing the backwashing of the mud-water tank 100 and the air cushion tank 200, and thus ensuring the efficient operation of the system.

[0071] It should be noted that the backwash passage 4 is used in conjunction with the first bypass pipeline 31 to achieve the normal backwash mode, and the eighth valve body 42 is used to control the opening and closing of the backwash passage 4 and the flow rate adjustment. The specific type of the eighth valve body 42 can be set according to actual needs and there are no restrictions on it.

[0072] like Figure 1 As shown, in some embodiments, the slurry discharge device further includes a second bypass passage 5, which includes a second bypass pipe 51, a ninth valve body 52, and a booster pump 53. The inlet end of the second bypass pipe 51 is connected to the slurry main pipe 17 and is located between the slurry pump 18 and the fifth valve body 19. The outlet end of the second bypass pipe 51 is connected to the slurry discharge main pipe 27 and is located at the end of the sixth valve body 28 away from the slurry discharge pump 29. The ninth valve body 52 and the booster pump 53 are respectively disposed on the second bypass pipe 51. The ninth valve body 52 is used to selectively open the second bypass pipe 51.

[0073] Understandably, since the inlet end of the second bypass pipe 51 is connected to the slurry main pipe 17 and is located between the slurry pump 18 and the fifth valve body 19, and the outlet end of the second bypass pipe 51 is connected to the slurry discharge main pipe 27 and is located at the end of the sixth valve body 28 away from the slurry discharge pump 29, and the ninth valve body 52 and the booster pump 53 are respectively installed on the second bypass pipe 51, when the fifth valve body 19, the sixth valve body 28 and the seventh valve body 32 are disconnected, and the eighth valve body 42 and the ninth valve body 52 are connected, the first slurry in the slurry main pipe 17 can enter the mud-water tank 100 and the air cushion tank 200 through the second bypass pipe 51, and be discharged through the backwash passage 4 and the slurry discharge main pipe 27. At the same time, the booster pump 53 pressurizes and delivers the slurry, thereby realizing the pressurized backwashing of the mud-water tank 100 and the air cushion tank 200, thus ensuring the efficient operation of the system.

[0074] It should be noted that the second bypass passage 5 is used in conjunction with the backwash passage 4 to achieve a pressurized backwash mode, the ninth valve body 52 is used to control the opening and closing of the second bypass passage 5 and to regulate the flow rate, and the booster pump 53 is used for pressurized delivery of the backwash slurry. The specific types of the ninth valve body 52 and the booster pump 53 can be set according to actual needs and are not limited thereto. Specifically, there can be two ninth valve bodies 52, respectively arranged at both ends of the booster pump 53.

[0075] like Figure 1 As shown, in some embodiments, the slurry discharge device further includes a monitoring module 6, which includes a first density meter 61, a first pressure sensor 62, a first liquid level sensor 63, a second density meter 64, a second pressure sensor 65, and a second liquid level sensor 66. The first density meter 61 has its detection end located inside the mud-water tank 100 and is used to detect the density of the mud-water tank 100. The first pressure sensor 62 has its detection end located inside the mud-water tank 100 and is used to detect the pressure of the mud-water tank 100. The first liquid level sensor 63 has its detection end located inside the mud-water tank 100 and is used to detect the liquid level of the mud-water tank 100. The second density meter 64 has its detection end located inside the air cushion tank 200 and is used to detect the density of the air cushion tank 200. The second pressure sensor 65 has its detection end located inside the air cushion tank 200 and is used to detect the pressure of the air cushion tank 200. The second liquid level sensor 66 has its detection end located inside the air cushion tank 200 and is used to detect the liquid level of the air cushion tank 200.

[0076] It can be understood that, by using the arrangement of the first densimeter 61, the first pressure sensor 62 and the first liquid level sensor 63, the density of the slurry bin 100, the pressure of the slurry bin 100 and the liquid level of the slurry bin 100 can be obtained, and by using the arrangement of the second densimeter 64, the second pressure sensor 65 and the second liquid level sensor 66, the density of the air cushion bin 200, the pressure of the air cushion bin 200 and the liquid level of the air cushion bin 200 can be obtained, so that the accurate operation requirement of the system can be met.

[0077] It should be noted that the first densimeter 61 and the second densimeter 64 are both densimeters for detecting density, and the specific types of the first densimeter 61 and the second densimeter 64 can be set according to actual needs, which are not limited.

[0078] The first pressure sensor 62 and the second pressure sensor 65 are both pressure sensors for detecting pressure, and the specific types of the first pressure sensor 62 and the second pressure sensor 65 can be set according to actual needs, which are not limited.

[0079] The first liquid level sensor 63 and the second liquid level sensor 66 are both liquid level sensors for detecting liquid level, and the specific types of the first liquid level sensor 63 and the second liquid level sensor 66 can be set according to actual needs, which are not limited.

[0080] It should be noted that, in the description of the present disclosure, the terms "first", "second" and the like are only for descriptive purposes and should not be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise stated, the meaning of "multiple" is two or more.

[0081] Any process or method descriptions in flow charts or described elsewhere herein can be understood as representing code modules, segments, or portions of code that include one or more executable instructions for implementing specific logic functions or other processes. The various embodiments of the present disclosure can include additional implementations, in which the order of the steps has been changed, including according to the functionality involved, has been changed, or has been reversed, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0082] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0083] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above-described embodiments are exemplary, and it is not construed that the present disclosure is limited to the above-described embodiments, and a person of ordinary skill in the art can make changes, modifications, replacements, and variations to the above-described embodiments within the scope of the present disclosure.

Claims

1. A slurry discharge device for a slurry balance shield tunneling machine, characterized in that, include: The slurry inlet passage includes a first slurry inlet branch pipe and a second slurry inlet branch pipe. The inlet end of the first slurry inlet branch pipe and the inlet end of the second slurry inlet branch pipe are respectively connected to the first slurry. The outlet end of the first slurry inlet branch pipe is connected to the inlet end of the slurry chamber in the shield tunneling system, and the outlet end of the second slurry inlet branch pipe is connected to the inlet end of the air cushion chamber in the shield tunneling system. The slurry discharge passage includes a first slurry discharge branch pipe and a second slurry discharge branch pipe. The inlet end of the first slurry discharge branch pipe is connected to the outlet end of the mud-water chamber, and the inlet end of the second slurry discharge branch pipe is connected to the outlet end of the air cushion chamber. The outlet ends of the first slurry discharge branch pipe and the outlet ends of the second slurry discharge branch pipe respectively discharge the second slurry. Wherein, the first slurry inlet branch pipe and the second slurry inlet branch pipe are connected, and the first slurry outlet branch pipe and / or the second slurry outlet branch pipe are connected; The slurry inlet passage further includes: a slurry inlet main pipe, a slurry inlet pump, and a fifth valve body. The inlet end of the slurry inlet main pipe is connected to the first slurry inlet branch pipe and the inlet end of the second slurry inlet branch pipe, respectively. The slurry inlet pump and the fifth valve body are sequentially arranged on the slurry inlet main pipe from the inlet end to the outlet end. The fifth valve body is used to selectively open the slurry inlet main pipe and to regulate the flow rate of the slurry inlet main pipe. The slurry discharge passage further includes: a slurry discharge main pipe, a sixth valve body, and a slurry discharge pump. The inlet end of the slurry discharge main pipe is connected to the outlet end of the first slurry discharge branch pipe and the outlet end of the second slurry discharge branch pipe, respectively. The outlet end of the slurry discharge main pipe is used to discharge the second slurry. The sixth valve body and the slurry discharge pump are sequentially arranged on the slurry discharge main pipe from the inlet end to the outlet end. The sixth valve body is used to selectively open the slurry discharge main pipe and to regulate the flow rate of the slurry discharge main pipe. The slurry discharge device further includes: a first bypass passage, the first bypass passage including: a first bypass pipe and a seventh valve body, the inlet end of the first bypass pipe being connected to the slurry main pipe and located between the slurry pump and the fifth valve body, and the outlet end of the first bypass pipe being connected to the slurry discharge main pipe and located at the end of the sixth valve body away from the slurry discharge pump, the seventh valve body being disposed on the first bypass pipe, the seventh valve body being used to selectively open the first bypass pipe and to adjust the flow rate of the first bypass pipe; The slurry discharge device further includes a backwash passage, which includes a backwash pipe and an eighth valve body. The inlet end of the backwash pipe is connected to the slurry inlet main pipe and is located at the end of the fifth valve body away from the slurry inlet pump. The outlet end of the backwash pipe is connected to the slurry discharge main pipe and is located between the sixth valve body and the slurry discharge pump. The eighth valve body is disposed on the backwash pipe and is used to selectively open the backwash pipe and adjust the flow rate of the backwash pipe. The slurry discharge device further includes a second bypass passage, which includes a second bypass pipe, a ninth valve body, and a booster pump. The inlet end of the second bypass pipe is connected to the slurry inlet main pipe and is located between the slurry inlet pump and the fifth valve body. The outlet end of the second bypass pipe is connected to the slurry discharge main pipe and is located at the end of the sixth valve body away from the slurry discharge pump. The ninth valve body and the booster pump are respectively installed on the second bypass pipe. The ninth valve body is used to selectively open the second bypass pipe. The slurry discharge device further includes a monitoring module, which comprises a first densitometer, a first pressure sensor, a first liquid level sensor, a second densitometer, a second pressure sensor, and a second liquid level sensor. The first densitometer's detection end is located within the slurry tank, and it is used to detect the density of the slurry tank. The first pressure sensor's detection end is located within the slurry tank, and it is used to detect the pressure of the slurry tank. The first liquid level sensor's detection end is located within the slurry tank, and it is used to detect the liquid level of the slurry tank. The second densitometer's detection end is located within the air cushion tank, and it is used to detect the density of the air cushion tank. The second pressure sensor's detection end is located within the air cushion tank, and it is used to detect the pressure of the air cushion tank. The second liquid level sensor's detection end is located within the air cushion tank, and it is used to detect the liquid level of the air cushion tank.

2. The slurry discharge device for a slurry balance shield machine according to claim 1, characterized in that, The slurry drainage passage also includes: A first valve body is disposed on the first slurry discharge branch pipe, and the first valve body is used to selectively open the first slurry discharge branch pipe and adjust the flow rate of the first slurry discharge branch pipe. The second valve body is disposed on the second slurry discharge branch pipe, and the second valve body is used to selectively open the second slurry discharge branch pipe and to regulate the flow rate of the second slurry discharge branch pipe.

3. The slurry discharge device for a slurry balance shield machine according to claim 2, characterized in that, The slurry drainage passage also includes: The first flow meter has its detection end installed on the first slurry discharge branch pipe, and the first flow meter is used to detect the flow rate of the first slurry discharge branch pipe; The second flow meter has its detection end installed on the second slurry discharge branch pipe, and the second flow meter is used to detect the flow rate of the second slurry discharge branch pipe.

4. The slurry discharge device for a slurry balance shield machine according to claim 1, characterized in that, The slurry inlet passage also includes: A third valve body is disposed on the first slurry inlet branch pipe, and the third valve body is used to selectively open the first slurry inlet branch pipe and to adjust the flow rate of the first slurry inlet branch pipe; A fourth valve body is disposed on the second slurry inlet branch pipe, and the fourth valve body is used to selectively open the second slurry inlet branch pipe and to regulate the flow rate of the second slurry inlet branch pipe.

5. The slurry discharge device for a slurry balance shield machine according to claim 4, characterized in that, The slurry inlet passage also includes: A third flow meter, wherein the detection end of the third flow meter is disposed on the first slurry inlet branch pipe, and the third flow meter is used to detect the flow rate of the first slurry inlet branch pipe; A fourth flow meter, the detection end of which is disposed on the second slurry inlet pipe, and the fourth flow meter is used to detect the flow rate of the second slurry inlet pipe.

Images