Tunnel construction waste resource recycling system

Abstract

The invention relates to the technical field of tunnel environmental protection, in particular to a tunnel construction waste resource recycling system which comprises the following steps that waste is collected and transported; waste pretreatment; producing bricks; aggregate is recycled; resource utilization of other wastes is realized; and detecting and controlling the product quality. Through the intelligent waste collection and classification system, accurate putting and efficient transportation of waste are ensured; effective separation and purification of wastes are realized through a refined pretreatment process; through diversified resource utilization modes, the waste is converted into building bricks, recycled aggregates, metal products and other products with high additional values; meanwhile, by establishing a strict product quality detection system, the quality and safety of resource products are guaranteed, the resource utilization rate of tunnel construction waste is remarkably increased, the negative influence of construction activities on the natural environment is effectively relieved, and green and sustainable development of the tunnel construction industry is promoted.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel environmental protection, and in particular to a tunnel construction waste resource recycling system. Background Art

[0002] During the tunnel construction process, a large amount of waste will be generated, including earth and stone, concrete blocks, metal materials, plastic packaging, waste tools, etc. If these wastes are not properly handled, they will not only occupy a large amount of land resources, but also cause soil pollution, water pollution and air pollution to the surrounding environment through rainwater erosion, wind diffusion and other channels.

[0003] Traditional methods of handling tunnel construction waste are mostly landfill or stacking, which not only wastes a large amount of recyclable resources, but also may cause secondary pollution due to improper handling. In recent years, with the improvement of environmental awareness and the promotion of green construction concepts, the resource utilization of tunnel construction waste has gradually received attention. However, existing resource utilization technologies often have problems such as low processing efficiency, low added value of resource products, and high processing costs, which limit their wide application in actual projects.

[0004] Therefore, it is necessary to develop a tunnel construction waste resource recycling system to solve the above-mentioned problems existing in the prior art. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned technology and provide a tunnel construction waste resource recycling system.

[0006] To achieve the above purpose, the present invention provides a tunnel construction waste resource recycling system, comprising the following steps:

[0007] 1) Waste collection and transportation: Set up multiple classified collection points at the tunnel construction site, install intelligent monitoring equipment at the collection points, and equip environmentally friendly transportation vehicles;

[0008] 2) Waste pretreatment: After the waste is transported to the treatment center, the collected waste is pretreated, including the crushing, screening, and impurity removal and cleaning processes of the waste;

[0009] 3) Brick production: Mix some of the pre-treated waste with cement, additives, etc. in a certain proportion, and make building bricks of various specifications through processes such as mixing, molding, and curing;

[0010] 4) Recycled aggregate: Pre-treated stone waste and concrete blocks are further processed to produce recycled aggregate;

[0011] 5) Resource utilization of other wastes: Recycle and purify the metal materials in the wastes and reprocess them into various metal products;

[0012] 6) Product quality inspection and control: During the resource utilization process, a strict quality inspection system is established to conduct quality inspections on all types of products produced.

[0013] Furthermore, the step 1) also includes setting up obvious signboards and collection containers of different colors in each collection area to facilitate construction workers to accurately place the contents of the waste.

[0014] Furthermore, in the step 1), installing intelligent monitoring equipment at the collection point includes: installing a high-precision weight sensor at the bottom of each collection container to monitor the weight changes of the waste in real time; installing a high-definition image recognition sensor above the collection area to identify the type of waste using a deep learning algorithm; and installing a position monitoring system consisting of a GPS positioning sensor and an inertial measurement unit on the transport vehicle to ensure real-time tracking of the transport vehicle.

[0015] Furthermore, it also includes deploying a data analysis and management platform on the cloud server, which conducts in-depth analysis and mining of the collected data based on big data analysis technology and artificial intelligence algorithms.

[0016] Furthermore, in the step 2), the crushing of the waste includes the content of primary crushing by a jaw crusher; the impurity removal and cleaning process includes the content of removing ferromagnetic metal impurities in the waste by using a magnetic separation device, cleaning the waste containing impurities such as mud and oil by using a high-pressure water gun, and removing light impurities such as plastic and rubber in the waste by using a flotation device.

[0017] Furthermore, the step 3) also includes using computer simulation technology and experimental data analysis to accurately adjust the ratio of raw materials such as waste, cement, additives, etc. according to different types of waste and performance requirements of target bricks.

[0018] Furthermore, the step 4) also includes feeding the pre-treated stone waste and concrete blocks into a cone crusher for secondary crushing, shaping the aggregates after the secondary crushing by an impact crusher, and strengthening the recycled aggregates by physical and chemical methods.

[0019] Furthermore, the physical method includes heating, cooling and mechanical grinding, which improve the strength and stability of the aggregate by changing the microstructure of the aggregate; the chemical method includes surface coating and immersion treatment, which enhances the bonding force between the aggregate and the cement paste by forming a protective film on the surface of the aggregate.

[0020] Furthermore, in step 6), the quality inspection method includes installing a variety of online inspection equipment on the production line to perform online real-time monitoring and regularly extracting samples from the production line and sending them to a professional laboratory for comprehensive quality inspection.

[0021] Advantages of the invention: The invention provides a system for recycling and utilizing waste from tunnel construction. Through an intelligent waste collection and classification system, it ensures accurate placement and efficient transportation of waste; through refined pretreatment processes, it achieves effective separation and purification of waste; through diversified resource utilization methods, it converts waste into high-value-added products such as building bricks, recycled aggregates and metal products; at the same time, through the establishment of a strict product quality inspection system, it ensures the quality and safety of resource-based products. This series of advantages not only significantly improves the resource utilization rate of tunnel construction waste and reduces processing costs, but also effectively reduces the negative impact of construction activities on the natural environment, and promotes the green and sustainable development of the tunnel construction industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a flow chart of a tunnel construction waste resource recycling system. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is not limited to the specific implementation modes listed below, but also includes any reasonable combination of the specific implementation modes.

[0024] A tunnel construction waste resource recycling system comprises the following steps:

[0025] 1) Waste collection and transportation: Set up multiple classified collection points at the tunnel construction site, install intelligent monitoring equipment at the collection points, and equip environmentally friendly transportation vehicles.

[0026] It is understandable that it also includes setting up obvious signs and collection containers of different colors in each collection area to facilitate construction workers to accurately place waste. The installation of intelligent monitoring equipment at the collection point includes: installing high-precision weight sensors at the bottom of each collection container to monitor the weight changes of waste in real time; installing high-definition image recognition sensors above the collection area to identify the type of waste using deep learning algorithms; installing a location monitoring system consisting of GPS positioning sensors and inertial measurement units on the transport vehicles to ensure real-time tracking of the transport vehicles, and also includes deploying a data analysis and management platform on the cloud server, which is based on big data analysis technology and artificial intelligence algorithms to conduct in-depth analysis and mining of the collected data.

[0027] 2) Waste pretreatment: After the waste is transported to the treatment center, the collected waste is pretreated, including the crushing, screening and impurity removal and cleaning processes of the waste. The crushing of the waste includes the use of a jaw crusher for primary crushing; the impurity removal and cleaning process includes the use of magnetic separation equipment to remove ferromagnetic metal impurities in the waste, the use of high-pressure water guns to clean the waste containing impurities such as soil and oil, and the use of flotation equipment to remove light impurities such as plastics and rubber in the waste.

[0028] 3) Brick production: Mix part of the pre-treated waste with cement, additives, etc. in a certain proportion, and make building bricks of various specifications through processes such as mixing, molding, and curing. It also includes the use of computer simulation technology and experimental data analysis to accurately adjust the ratio of waste, cement, additives and other raw materials according to different types of waste and the performance requirements of the target bricks.

[0029] Specifically, according to different types of waste and the performance requirements of the target bricks, computer simulation technology and experimental data analysis are used to accurately adjust the ratio of raw materials such as waste, cement, and additives. For example, for bricks with stone waste as the main raw material, the strength and durability of the bricks are improved by adjusting the amount of cement and additives; for bricks with concrete blocks as the main raw material, the crack resistance of the bricks is enhanced by adding an appropriate amount of fiber materials. After the bricks are formed, they are sent to the steam curing kiln for curing. The steam curing kiln adopts an intelligent temperature control system and a humidity control system, which can accurately control the curing temperature and humidity according to the characteristics and curing requirements of the bricks. After the curing is completed, the bricks are comprehensively tested for quality, including the testing of compressive strength, flexural strength, water absorption, density and other indicators. The testing equipment uses advanced automated testing instruments, which can quickly and accurately detect the various performance indicators of the bricks. For unqualified bricks, they are reprocessed or scrapped.

[0030] 4) Recycled aggregate: The pre-treated stone waste and concrete blocks are further processed to produce recycled aggregate; it also includes sending the pre-treated stone waste and concrete blocks to a cone crusher for secondary crushing, shaping the aggregates after secondary crushing by an impact crusher, and strengthening the recycled aggregates by physical and chemical methods.

[0031] Specifically, the pre-treated stone waste and concrete blocks are sent to the cone crusher for secondary crushing. The cone crusher adopts the principle of lamination crushing and can produce recycled aggregates with regular shape and uniform particle size. The aggregates after secondary crushing are shaped by the impact crusher. The impact crusher uses the high-speed rotating rotor and the impact plate to continuously impact and rub the aggregates during the crushing process, thereby improving the shape and surface texture of the aggregates. The gradation of the recycled aggregate is adjusted according to different application requirements. The screening system composed of a vibrating screen and a belt conveyor is used to screen the recycled aggregate into particles of different particle sizes, and then mix them in a certain proportion to make their gradation meet the corresponding standards. The recycled aggregate is strengthened by physical and chemical methods. Physical methods include heating, cooling, mechanical grinding, etc., which improve the strength and stability of the aggregate by changing the microstructure of the aggregate; chemical methods include surface coating, immersion treatment, etc., which form a protective film on the surface of the aggregate to enhance the bonding force between the aggregate and the cement paste.

[0032] 5) Resource utilization of other wastes: metal materials in wastes are recycled and purified, and reprocessed into various metal products.

[0033] Specifically, metal materials in waste are recovered and purified through magnetic separation, flotation, smelting and other processes. Magnetic separation and flotation processes are used to separate ferromagnetic metals from non-ferromagnetic metals, and then the separated metals are sent to a smelting furnace for smelting. During the smelting process, appropriate amounts of flux and deoxidizer are added to remove impurities and oxides in the metal and improve the purity of the metal. The purified metal can be reprocessed into various metal products, such as steel bars, pipes, connectors, etc., for use in construction projects or other fields. The wood in the waste is sorted and sorted, and the usable wood is cut, planed, spliced ​​and processed to make building materials such as wooden blocks, wooden boards, and wooden formwork. For wood that cannot be used directly, it is crushed and made into products such as biomass fuel or fiberboard.

[0034] 6) Product quality inspection and control: During the resource recovery process, a strict quality inspection system is established to conduct quality inspections on all types of products produced. The quality inspection methods include installing a variety of online inspection equipment on the production line for online real-time monitoring and regularly taking samples from the production line and sending them to professional laboratories for comprehensive quality inspections.

[0035] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A tunnel construction waste resource recycling system, characterized in that: The following steps are involved: 1) Waste collection and transportation: Set up multiple classified collection points at the tunnel construction site, install intelligent monitoring equipment at the collection points, and equip environmentally friendly transportation vehicles; 2) Waste pretreatment: After the waste is transported to the treatment center, the collected waste is pretreated, including the crushing, screening, and impurity removal and cleaning processes of the waste; 3) Brick production: Mix some of the pre-treated waste with cement, additives, etc. in a certain proportion, and make building bricks of various specifications through processes such as mixing, molding, and curing; 4) Recycled aggregate: Pre-treated stone waste and concrete blocks are further processed to produce recycled aggregate; 5) Resource utilization of other wastes: Recycle and purify the metal materials in the wastes and reprocess them into various metal products; 6) Product quality inspection and control: During the resource utilization process, a strict quality inspection system is established to conduct quality inspections on all types of products produced.

2. A tunnel construction waste resource recycling system according to claim 1, characterized in that: The step 1) also includes setting up obvious signboards and collection containers of different colors in each collection area to facilitate construction workers to accurately place the contents of the waste.

3. The tunnel construction waste resource recycling system according to claim 1 is characterized by: In the step 1), the intelligent monitoring equipment is installed at the collection point, including: installing a high-precision weight sensor at the bottom of each collection container to monitor the weight change of the waste in real time; installing a high-definition image recognition sensor above the collection area to identify the type of waste using a deep learning algorithm; and installing a position monitoring system consisting of a GPS positioning sensor and an inertial measurement unit on the transport vehicle to ensure real-time tracking of the transport vehicle.

4. A tunnel construction waste resource recycling system according to claim 3, characterized in that: It also includes deploying a data analysis and management platform on a cloud server, which conducts in-depth analysis and mining of the collected data based on big data analysis technology and artificial intelligence algorithms.

5. The tunnel construction waste resource recycling system according to claim 1 is characterized by: In the step 2), the crushing of the waste includes the content of primary crushing by a jaw crusher; the impurity removal and cleaning process includes the content of removing ferromagnetic metal impurities in the waste by using a magnetic separation device, cleaning the waste containing impurities such as mud and oil by using a high-pressure water gun, and removing light impurities such as plastic and rubber in the waste by using a flotation device.

6. The tunnel construction waste resource recycling system according to claim 1 is characterized by: The step 3) also includes accurately adjusting the proportion of the waste, cement, additives and other raw materials according to the different types of waste and the performance requirements of the target bricks by using computer simulation technology and experimental data analysis.

7. The tunnel construction waste resource recycling system according to claim 1 is characterized by: The step 4) also includes sending the pre-treated stone waste and concrete blocks into a cone crusher for secondary crushing, shaping the aggregates after secondary crushing through an impact crusher, and strengthening the recycled aggregates by physical and chemical methods.

8. A tunnel construction waste resource recycling system according to claim 7, characterized in that: The physical method includes heating, cooling and mechanical grinding, which improve the strength and stability of the aggregate by changing the microstructure of the aggregate; the chemical method includes surface coating and immersion treatment, which forms a protective film on the surface of the aggregate to enhance the bonding force between the aggregate and the cement paste.

9. The tunnel construction waste resource recycling system according to claim 1 is characterized by: In step 6), the quality inspection method includes installing a variety of online inspection equipment on the production line to perform online real-time monitoring and regularly extracting samples from the production line and sending them to a professional laboratory for comprehensive quality inspection.

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