Intelligent treatment system for large-diameter shield waste slurry

Abstract

The invention discloses a large-diameter shield waste slurry intelligent treatment system which comprises a centrifugal machine module used for treating most of waste slurry generated by a large-diameter shield to reduce the specific gravity of the slurry, judging the solid content of the waste slurry to set the rotating speed of a centrifugal machine and carrying out liquid-solid separation on the waste slurry, and obtaining dry residues and waste slurry based on the centrifugal machine module; the waste slurry dehydration module is used for treating a small part of waste slurry generated by the large-diameter shield or waste slurry generated by the centrifugal machine module; and the intelligent control module is used for optimizing operation parameters based on a PLC, an Internet of Things sensor and an AI algorithm. Through the intelligent control module, real-time monitoring of slurry, dynamic adjustment of equipment and intelligent algorithm analysis can be carried out, and the equipment is automatically adjusted according to the monitoring result and the intelligent algorithm analysis, so that the centrifugal machine module and the waste slurry dehydration module can conveniently carry out labor division, the centrifugal machine module reduces the proportion of waste slurry, and the waste slurry dehydration efficiency is improved. The waste slurry treatment capacity of the waste slurry dehydration module is reduced, and the slurry treatment efficiency and the resource utilization rate are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of shield tunneling waste slurry treatment technology, specifically to a smart waste slurry treatment system for large-diameter shield tunnels. Background Technology

[0002] my country's urbanization process has entered a stage of accelerated urban development, with a rapid increase in urban population leading to a surge in traffic volume. This necessitates the development and construction of underground transportation infrastructure, with large-diameter tunnel boring machines (TBMs) playing a crucial role in the excavation of subway tunnels. TBM waste slurry treatment refers to the process of processing and reusing the large amounts of waste slurry generated during TBM tunnel construction. This waste slurry contains significant amounts of mud, sand, rock fragments, and chemical additives, requiring treatment to meet environmental protection requirements and ensure the smooth progress of subsequent construction.

[0003] The aforementioned and existing shield tunneling slurry treatment processes are complex, typically requiring significant manual labor, resulting in slow processing speeds. Furthermore, manual processing relies heavily on experience and judgment, often neglecting to consider the slurry concentration, which can lead to errors, excessive reagent consumption, and high labor costs. Therefore, there is an urgent need to design an intelligent waste slurry treatment system for large-diameter shield tunnels to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a smart treatment system for waste slurry from large-diameter tunnel boring machines, in order to overcome the aforementioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A smart system for treating waste slurry from large-diameter tunnel boring machines includes:

[0007] The centrifuge module is used to process most of the waste slurry generated by large-diameter shield tunnels to reduce the specific gravity of the mud. The centrifuge speed is set according to the solid content of the waste slurry, and the waste slurry is separated into liquid and solid. Based on the centrifuge module, dry residue and waste slurry are obtained.

[0008] The waste slurry dewatering module is used to process a small portion of the waste slurry generated by the large-diameter shield tunnel or the discarded slurry generated by the centrifuge module. It determines the solids content of the waste slurry and the discarded slurry to set the pressure of the filter press and performs deep dewatering on the waste slurry and the discarded slurry. Based on the waste slurry dewatering module, the dry residue is transported off-site.

[0009] The intelligent control module optimizes operating parameters based on PLC, IoT sensors and AI algorithms. It is used to monitor mud flow rate, mud solids content and dry residue moisture content in real time. Based on the mud solids content, it switches the priority of the centrifuge module and the waste slurry dewatering module and adjusts the equipment status in real time to balance separation efficiency and energy consumption.

[0010] The intelligent dosing module is used for automatic dosing at the inlet of the centrifuge module and the inlet of the waste slurry dewatering module, and automatically adjusts the dosing amount based on the slurry flow rate and the slurry solids content.

[0011] Furthermore, the intelligent control module includes:

[0012] The data unit is used to connect to the cloud platform to monitor and process data in real time, record statistical data to generate visual reports, and optimize the process flow based on the recorded historical data.

[0013] The early warning unit is used to monitor equipment operating parameters, working stability and vibration frequency in real time, perform fault self-diagnosis of the equipment, and provide early warnings for equipment maintenance.

[0014] The dosing unit is used to analyze mud data online and automatically adjust the dosage by invoking the intelligent dosing module;

[0015] An automation unit is used to automatically adjust the equipment parameters of the centrifuge module and the waste slurry dewatering module without human intervention, and to perform real-time analysis based on the waste slurry flow rate fed back by the sensors.

[0016] The energy consumption optimization unit is used to dynamically adjust the operating frequency to match the amount of mud to be processed.

[0017] Furthermore, the data unit is equipped with a visual dashboard, which displays real-time mud parameters, equipment status, alarm information, and historical data. The historical data includes past and daily mud processing volume, reagent consumption, and dry residue production data. The data unit is also equipped with mobile monitoring, which is used to remotely adjust the dosage or start / stop the equipment via an APP / Web interface.

[0018] Furthermore, the intelligent waste slurry treatment system also includes a screening machine, which is used to screen the waste slurry generated by large-diameter tunnel boring machines and separate large particles of gravel from the waste slurry.

[0019] Furthermore, the intelligent waste slurry treatment system also includes a sedimentation tank, which is used to settle and screen the waste slurry. The sedimentation tank is connected to the inlet of the centrifuge, and a slurry solids content detector and a flocculant dosing device are installed between the sedimentation tank and the inlet of the centrifuge.

[0020] Furthermore, the intelligent waste slurry treatment system also includes a waste slurry tank, which is used to store the slurry after the specific gravity of the sedimentation tank has been reduced. The waste slurry tank is connected to the inlet of the filter press, and a slurry solids content detector, a pH detection device, and an automatic dosing device are installed between the waste slurry tank and the inlet of the filter press.

[0021] Furthermore, the intelligent waste slurry treatment system also includes a slurry return mechanism, which includes a slurry conditioning tank, a slurry return tank, and a mud-water return tank. The slurry conditioning tank is equipped with a bentonite dosing device, a filtration loss reducer dosing device, and a pH adjuster dosing device. The slurry conditioning tank is used to adjust the density, viscosity, and other parameters of the mud to meet the requirements for reuse by the tunnel boring machine. The slurry return tank is used to extract the mud from the slurry conditioning tank and transfer it to the mud-water return tank for use.

[0022] Furthermore, an online densitometer and a viscometer are installed between the slurry return tank and the slurry conditioning tank to provide real-time data feedback to the dosing equipment in the slurry conditioning tank, thereby enabling dynamic parameter adjustment.

[0023] Furthermore, a clear water circuit is provided between the drain outlet of the filter press and the mud-water return tank, and a disinfectant dosing device is provided in the clear water circuit to ensure that the water quality meets the standards.

[0024] Furthermore, both the centrifuge and the filter press are equipped with a dry residue discharge point, which is used to store the dry residue for external transportation. The two dry residue discharge points can be located at the same place. A humidity sensor is installed on the dry residue discharge point to detect the moisture content of the dry residue.

[0025] In the above technical solution, the intelligent treatment system for large-diameter shield tunnel waste slurry provided by the present invention has the following beneficial effects:

[0026] The intelligent control module enables real-time monitoring of the mud, dynamic adjustment of the equipment, and intelligent algorithm analysis. Based on the monitoring results and intelligent algorithm analysis, the equipment is automatically adjusted, facilitating the division of labor between the centrifuge module and the waste slurry dewatering module. This allows the centrifuge module to reduce the proportion of waste slurry and the waste slurry processing volume of the waste slurry dewatering module, significantly improving mud treatment efficiency and resource utilization. It also facilitates real-time monitoring and early warning of equipment anomalies. The intelligent dosing module automatically adjusts the dosage of chemicals for the corresponding equipment based on mud flow rate and solids content data, reducing excessive consumption of chemicals and minimizing human error. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0028] Figure 1 This is a structural block diagram of a waste slurry intelligent treatment system provided in an embodiment of a large-diameter shield tunnel waste slurry intelligent treatment system of the present invention.

[0029] Figure 2 This is a flowchart of the intelligent control module provided in an embodiment of a large-diameter shield tunnel waste slurry intelligent treatment system of the present invention.

[0030] Figure 3 This is a flowchart of a waste slurry intelligent treatment system provided in an embodiment of a large-diameter shield tunnel waste slurry intelligent treatment system of the present invention. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] like Figure 1-3 As shown in the figure, an intelligent waste slurry treatment system for large-diameter shield tunneling machines provided by an embodiment of the present invention includes:

[0033] The centrifuge module is used to process most of the waste slurry generated by large-diameter shield tunnels to reduce the specific gravity of the mud. It determines the solid content of the waste slurry to set the centrifuge speed and performs liquid-solid separation of the waste slurry. Based on the centrifuge module, dry slag and waste slurry are obtained.

[0034] The waste slurry dewatering module is used to process a small portion of the waste slurry generated by large-diameter shield tunneling machines or the discarded slurry generated by centrifuge modules. It determines the solids content of the waste slurry and discarded slurry to set the pressure of the filter press and performs deep dewatering on the waste slurry and discarded slurry. Based on the waste slurry dewatering module, the dry slag is transported off-site.

[0035] The intelligent control module optimizes operating parameters based on PLC, IoT sensors and AI algorithms. It is used to monitor mud flow rate, mud solids content and dry residue moisture content in real time. It switches the priority of centrifuge module and waste slurry dewatering module according to mud solids content and adjusts equipment status in real time to balance separation efficiency and energy consumption.

[0036] The intelligent dosing module is used for automatic dosing at the inlet of the centrifuge module and the inlet of the waste slurry dewatering module, and automatically adjusts the dosing amount based on the slurry flow rate and slurry solids content.

[0037] Screening machine, used to screen waste slurry produced by large-diameter tunnel boring machines;

[0038] Sedimentation tanks are used to settle and screen waste slurry.

[0039] Waste slurry tank is used to store slurry that has been reduced in specific gravity in the sedimentation tank;

[0040] The slurry return mechanism is used to recycle and process the slurry.

[0041] Reference Figure 2 The intelligent control module in this embodiment includes:

[0042] The data unit is used to connect to the cloud platform to monitor and process data in real time, record statistical data to generate visual reports, and optimize the process flow based on the recorded historical data.

[0043] The early warning unit is used to monitor equipment operating parameters, working stability and vibration frequency in real time, perform fault self-diagnosis of the equipment, and provide early warnings for equipment maintenance.

[0044] The dosing unit is used to analyze mud data online and automatically adjust the dosage by invoking the intelligent dosing module;

[0045] An automation unit is used to automatically adjust the equipment parameters of the centrifuge module and the waste slurry dewatering module without human intervention, and to perform real-time analysis based on the waste slurry flow rate fed back by the sensors.

[0046] The energy optimization unit dynamically adjusts the operating frequency to match the slurry processing volume. Through the intelligent control module, intelligent control is implemented to save on reagent usage, reduce energy consumption, conserve labor, and significantly reduce project costs.

[0047] Reference Figure 2 In this embodiment, the data unit is equipped with a visual dashboard. This dashboard displays real-time mud parameters, equipment status, alarm information, and historical data. Historical data includes past and daily mud processing volumes, reagent consumption, and dry residue production data. The data unit also features mobile monitoring, which allows for remote adjustment of reagent dosage or starting / stopping the equipment via an app / web interface. Through the visual dashboard, users can observe the data and assess and statistically analyze the daily feed volume.

[0048] Reference Figure 3 The screening machine in this embodiment is used to screen the waste slurry generated by large-diameter tunnel boring machines and separate large particles of gravel from the waste slurry. By using the screening machine, larger gravel can be screened out, preventing gravel from entering the centrifuge or filter press and causing equipment damage.

[0049] Reference Figure 3 In this embodiment, the sedimentation tank is used for settling and screening of waste slurry. The sedimentation tank is connected to the inlet of the centrifuge, and a slurry solids content meter and a flocculant dosing device are installed between the sedimentation tank and the centrifuge inlet. The waste slurry tank is used to store the slurry after its specific gravity has been reduced in the sedimentation tank. The waste slurry tank is connected to the inlet of the filter press, and a slurry solids content meter, a pH meter, and an automatic dosing device are installed between the waste slurry tank and the filter press inlet. The slurry solids content meter allows for automatic adjustment of the detection data, regulating the centrifuge's speed parameters and the filter press's pressure parameters to balance efficiency and energy consumption, and automatically adjusting the dosage of the flocculant dosing device and the automatic dosing device.

[0050] Reference Figure 3The slurry return mechanism in this embodiment includes a slurry conditioning tank, a slurry return tank, and a slurry-water return tank. The conditioning tank is equipped with a bentonite dosing device, a filtration loss reducer dosing device, and a pH adjuster dosing device. The conditioning tank is used to adjust parameters such as the density and viscosity of the slurry to meet the requirements for reuse by the tunnel boring machine. The return tank is used to extract the slurry from the conditioning tank and transfer it to the slurry-water return tank for reuse. An online densitometer and viscometer are installed between the return tank and the conditioning tank to provide real-time data feedback to the dosing equipment in the conditioning tank, enabling dynamic parameter adjustment. The online densitometer and viscometer monitor the viscosity and density of the slurry in the conditioning tank. Based on the feedback from the online densitometer, the bentonite dosing amount is automatically adjusted; based on the filtration loss data, the filtration loss reducer dosing ratio is automatically adjusted; and based on the viscometer feedback, the pH adjuster dosing amount is automatically adjusted.

[0051] Reference Figure 3 In this embodiment, a clear water circuit is provided between the filter press drain outlet and the sludge return tank. A disinfectant dosing device is installed within this circuit to ensure water quality meets standards. This device enables the intelligent dosing module to automatically and periodically add disinfectant to the sludge return tank. The timing of the intelligent dosing module is adjusted based on the amount of sludge processed by the filter press.

[0052] Reference Figure 3 In this embodiment, both the centrifuge and the filter press are equipped with dry residue discharge points. These discharge points are used to store and transport the dry residue. The two discharge points can be located at the same place. Each discharge point is equipped with a humidity sensor to detect the moisture content of the dry residue. The humidity sensor detects the moisture content of the dry residue; if the moisture content is within acceptable limits, the residue can be transported. If the moisture content is insufficient, the processing time of the centrifuge and filter press will increase.

[0053] Working Principle: First, the screening machine filters the waste slurry generated by large-diameter tunnel boring machines, separating larger particles and gravel. The screened slurry is then discharged into a sedimentation tank for settling. Gravity settling further separates the coarser particles. During the settling process, an intelligent dosing module adds flocculants and pH adjusters based on slurry flow rate and solids content to promote sedimentation and facilitate subsequent solid-liquid separation. Then, a centrifuge module extracts the slurry from the sedimentation tank to reduce its specific gravity. Before entering the centrifuge module, the slurry solids content is measured by a solids content detector. The centrifuge speed is adjusted based on the measured solids content for efficient solid-liquid separation. The separation produces dry sludge and waste slurry. The waste slurry is sent to a waste slurry tank or a slurry conditioning tank, while some of the lighter slurry from the sedimentation tank is also discharged into the waste slurry tank. The filter press in the waste slurry dewatering module can dewater the waste slurry after centrifugation or the mud in the waste slurry tank. The lower specific gravity of the mud makes the filter press more efficient. After the mud in the filter press is dewatered, it forms dry slag. The dry slag discharged from the centrifuge and the dry slag discharged from the filter press are transported off-site after the moisture content is detected. The mud in the slurry conditioning tank will be treated by the intelligent dosing module according to parameters such as density and viscosity. After the slurry conditioning is completed, the pump in the slurry return tank will draw out the mud in the slurry conditioning tank and re-inject it into the tunnel boring machine to realize the recycling of mud. The clean water discharged from the filter press can be returned to the slurry return tank or the tunnel boring machine for recycling after disinfection. This completes the treatment of waste slurry. The intelligent control module will collect the monitored data during the treatment process and record and analyze it.

[0054] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A smart treatment system for waste slurry from large-diameter shield tunneling machines, characterized in that, include: The centrifuge module is used to process most of the waste slurry generated by large-diameter shield tunnels to reduce the specific gravity of the mud. The centrifuge speed is set according to the solid content of the waste slurry, and the waste slurry is separated into liquid and solid. Based on the centrifuge module, dry residue and waste slurry are obtained. The waste slurry dewatering module is used to process a small portion of the waste slurry generated by the large-diameter shield tunnel or the discarded slurry generated by the centrifuge module. It determines the solids content of the waste slurry and the discarded slurry to set the pressure of the filter press and performs deep dewatering on the waste slurry and the discarded slurry. Based on the waste slurry dewatering module, the dry residue is transported off-site. The intelligent control module optimizes operating parameters based on PLC, IoT sensors and AI algorithms. It is used to monitor mud flow rate, mud solids content and dry residue moisture content in real time. Based on the mud solids content, it switches the priority of the centrifuge module and the waste slurry dewatering module and adjusts the equipment status in real time to balance separation efficiency and energy consumption. The intelligent dosing module is used for automatic dosing at the inlet of the centrifuge module and the inlet of the waste slurry dewatering module, and automatically adjusts the dosing amount based on the slurry flow rate and the slurry solids content.

2. The intelligent waste slurry treatment system for large-diameter shield tunneling machines according to claim 1, characterized in that, The intelligent control module includes: The data unit is used to connect to the cloud platform to monitor and process data in real time, record statistical data to generate visual reports, and optimize the process flow based on the recorded historical data. The early warning unit is used to monitor equipment operating parameters, working stability and vibration frequency in real time, perform fault self-diagnosis of the equipment, and provide early warnings for equipment maintenance. The dosing unit is used to analyze mud data online and automatically adjust the dosage by invoking the intelligent dosing module; An automation unit is used to automatically adjust the equipment parameters of the centrifuge module and the waste slurry dewatering module without human intervention, and to perform real-time analysis based on the waste slurry flow rate fed back by the sensors. The energy consumption optimization unit is used to dynamically adjust the operating frequency to match the amount of mud to be processed.

3. The intelligent treatment system for large-diameter shield tunnel waste slurry according to claim 2, characterized in that, The data unit is equipped with a visual dashboard, which displays real-time mud parameters, equipment status, alarm information, and historical data. The historical data includes past and daily mud processing volume, reagent consumption, and dry residue production data. The data unit is also equipped with mobile monitoring, which allows for remote adjustment of reagent dosage or starting / stopping of the equipment via an app / web interface.

4. The intelligent waste slurry treatment system for large-diameter shield tunneling machines according to claim 1, characterized in that, The intelligent waste slurry treatment system also includes a screening machine, which is used to screen the waste slurry generated by large-diameter tunnel boring machines and separate large particles of gravel from the waste slurry.

5. The intelligent waste slurry treatment system for large-diameter shield tunneling machines according to claim 4, characterized in that, The intelligent waste slurry treatment system also includes a sedimentation tank, which is used to settle and screen the waste slurry. The sedimentation tank is connected to the inlet of the centrifuge, and a slurry solids content detector and a flocculant dosing device are installed between the sedimentation tank and the inlet of the centrifuge.

6. The intelligent waste slurry treatment system for large-diameter shield tunneling machines according to claim 5, characterized in that, The intelligent waste slurry treatment system also includes a waste slurry tank, which is used to store the slurry after the specific gravity of the sedimentation tank has been reduced. The waste slurry tank is connected to the inlet of the filter press. A slurry solids content detector, a pH detection device and an automatic dosing device are installed between the waste slurry tank and the inlet of the filter press.

7. The intelligent waste slurry treatment system for large-diameter shield tunneling machines according to claim 6, characterized in that, The intelligent waste slurry treatment system also includes a slurry return mechanism, which includes a slurry conditioning tank, a slurry return tank, and a slurry-water return tank. The slurry conditioning tank is equipped with a bentonite dosing device, a filtration loss reducer dosing device, and a pH adjuster dosing device. The slurry conditioning tank is used to adjust the density, viscosity, and other parameters of the slurry to meet the requirements for reuse by the tunnel boring machine. The slurry return tank is used to extract the slurry from the slurry conditioning tank and transfer it to the slurry-water return tank for use.

8. The intelligent treatment system for large-diameter shield tunnel waste slurry according to claim 7, characterized in that, An online densitometer and a viscometer are installed between the slurry return tank and the slurry conditioning tank to provide real-time data feedback to the dosing equipment in the slurry conditioning tank, thereby enabling dynamic parameter adjustment.

9. The intelligent treatment system for large-diameter shield tunnel waste slurry according to claim 8, characterized in that, A clear water circuit is provided between the drain outlet of the filter press and the mud-water return tank. A disinfectant dosing device is provided in the clear water circuit to ensure that the water quality meets the standards.

10. The intelligent treatment system for large-diameter shield tunnel waste slurry according to claim 1, characterized in that, Both the centrifuge and the filter press are equipped with a dry residue discharge point, which is used to store the dry residue for external transportation. The two dry residue discharge points can be located at the same place. A humidity sensor is installed on the dry residue discharge point to detect the moisture content of the dry residue.

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