Construction technology of anti-corrosion and anti-leakage for waste pool of waste incineration power plant

Abstract

The present application relates to garbage pool anti-leakage technical field, disclose a garbage incineration power plant garbage pool anticorrosion anti-leakage construction technology, including steel bar subitem construction, formwork subitem construction, concrete subitem construction: machine material preparation: adopt adding magnesium expansion agent as the admixture of concrete, the content is 5%~6% and base cleaning and wet, pool bottom waterproof, anticorrosion construction: the sharp hard thing on the surface of protruding base, mortar nodule is removed and 150mm thick C20 concrete is flattened with beating, pool wall ground waterproof, anticorrosion construction, pool wall underground waterproof, anticorrosion construction;The present application is prepared by using MgO expansion agent, and the water-binder ratio of the shrinkage-compensating concrete is lower, the microstructure of the hardened paste is more dense, the strength of the concrete is higher, the durability is better, the later performance is more stable, realizes garbage reduction, resource and harmless treatment, has the effect of energy saving and emission reduction.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of garbage pool anti-leakage, more specifically, relates to a garbage pool anti-corrosion and anti-leakage construction technology for a garbage incineration power plant. BACKGROUND

[0002] With the sharp increase of municipal solid waste in recent years, waste disposal has become an important challenge for the sustainable development of cities. In 2019, the municipal solid waste disposal capacity in China reached 240 million tons, and 60% of the waste was treated by sanitary landfill.

[0003] At present, the country is developing clean energy, and garbage incineration power generation has been vigorously promoted nationwide. In the process of waste treatment, the pollutants contained in the waste will be dissolved and leached with water, and the leachate is a kind of high-corrosive and high-polluting liquid, which will cause serious corrosion to the pool body reinforced concrete. If the pool body is cracked and leaked, it will cause pollution to the surrounding soil and groundwater, and cannot be reused. Therefore, in order to solve the problem of concrete cracks, the garbage incineration power plant garbage pool anti-corrosion and anti-leakage construction technology is proposed. SUMMARY

[0004] The purpose of the present application is to provide a garbage incineration power plant garbage pool anti-corrosion and anti-leakage construction technology. The water-binder ratio of the shrinkage-compensating concrete prepared by using MgO expanding agent is lower, the microstructure of the hardened paste is more dense, the strength of the concrete is higher, the durability is better, and the late performance is more stable. The garbage reduction, resource utilization and harmless treatment are realized, which has an important role in energy saving and emission reduction, and will bring great social and environmental benefits.

[0005] The technical scheme adopted by the present application is as follows:

[0006] The garbage incineration power plant garbage pool anti-corrosion and anti-leakage construction technology comprises the following steps:

[0007] S1, steel bar sub-construction: pool bottom steel bar binding, pool wall steel bar binding, frame beam steel bar binding and column steel bar binding;

[0008] S2, formwork sub-construction: column formwork construction, beam formwork construction, pool wall formwork construction;

[0009] S3, concrete sub-construction: machine material preparation: adding magnesium expanding agent as an additive of concrete, the mixing amount is 5%~6%, and base cleaning and wetting: and commodity concrete transportation and slump detection and concrete pouring: and concrete curing;

[0010] S4. Waterproofing and anti-corrosion construction of the pool bottom: Foundation trench cleaning: Remove sharp hard objects and mortar lumps protruding from the base surface, and pour and smooth 150mm thick C20 concrete, followed by 2mm thick HDPE waterproof membrane, 50mm thick C20 fine stone concrete, 1mm thick cement-based penetrating crystalline waterproof coating, waterproof and seepage-resistant reinforced concrete base slab (poured and smoothed), two coats of epoxy resin primer, 3mm thick epoxy mortar leveling layer, full coating of modified furan resin bonding material, 6mm thick YJ furan resin mortar overall surface layer, and a minimum 50mm thick concrete protective layer (with A8@200×200 bidirectional steel mesh inside), and create a 1% slope.

[0011] S5. Waterproofing and anti-corrosion construction of pool walls (ground): white inorganic coating (for the incineration room), white interior latex paint, 2mm thick water-resistant putty leveling, 20mm thick DP mortar compacted topcoat, 1.5mm thick polymer cement-based waterproof coating, 80mm thick DP mortar base coat, waterproof and seepage-resistant reinforced concrete sidewalls, two coats of epoxy resin base coat, 3mm thick epoxy mortar leveling layer, full coating of modified furan resin bonding material, 4mm thick YJ furan resin mortar overall surface layer, and 0.5mm thick YJ furan resin topcoat adhesive.

[0012] S6. Waterproofing and anti-corrosion construction of pool walls (underground): Backfill soil is compacted in layers, followed by a 50mm thick B1 grade extruded polystyrene board protective layer and a 2mm thick HDPE waterproof membrane. A 500mm~1mm thick cement-based penetrating crystalline waterproof coating is laid above the ground, along with waterproof and seepage-resistant reinforced concrete sidewalls, two coats of epoxy resin primer, a 3mm thick epoxy mortar leveling layer, a full coating of modified furan resin bonding material, a 4mm thick YJ furan resin mortar overall surface layer, and a 0.5mm thick YJ furan resin topcoat.

[0013] Optionally, in step S2, the base layer and formwork should be cleaned before concrete pouring. A blower should be used to clean the dust and loose soil in the base layer or formwork, and the surface should be rinsed and moistened with water. There should be no standing water on the surface.

[0014] Optionally, the transport of commercial concrete in step S2 must not result in segregation.

[0015] Optionally, in step S2 of the concrete pouring construction, the bottom slab of the pool is poured using the "sloping layer method". The sloping layer method is a continuous pouring method that advances horizontally in parallel and vertically in sloping layers, thin layers, natural flow, sequential advancement, and one-time completion. The thickness of each layer is 400 mm ± 100 mm, and the slope is ≤ 1:6. The concrete vibration work starts from the bottom of the pouring layer and gradually moves upward.

[0016] Optionally, in step S2 of the concrete pouring construction, after the concrete is discharged, the concrete at the discharge point is vibrated first to promote the flow slope. Then, it is vibrated in an array from bottom to top. During the vibration process, the concrete is inserted in a quincunx pattern, straight up and down, quickly inserted and slowly withdrawn, so that the concrete is vibrated to make it dense. The insertion points should be uniform, the distance between the insertion points should be controlled at 50cm, and the distance from the formwork should be 20cm.

[0017] Optionally, in the concrete curing process, step S2, water curing should be carried out after covering the exposed concrete surface with burlap sacks or straw mats, or directly using water sprinkling or water storage curing methods, and water curing should ensure that the concrete surface is kept moist.

[0018] Optionally, in step S2, after the concrete is poured, the temperature, humidity, stress, and strain inside the concrete are monitored in real time on a regular basis.

[0019] Optionally, in step S5, if it is not possible to remove sharp hard objects or mortar lumps protruding from the base surface during the waterproofing and anti-corrosion construction of the pool wall (ground), the surface can be covered with cement mortar, and the radius of the mortar arc should be greater than 300 mm. The inside and outside corners of the pool are ground and filled with epoxy putty to form an arc with R=50.

[0020] Optionally, the entire waste disposal site may be constructed using ready-mixed concrete, with a magnesium-based expanding agent used as an additive.

[0021] Optionally, in step S4, before waterproofing and anti-corrosion construction, the ends of the water-stop tie bolts used to fix the side wall template on the highly corrosive pool side wall are cut off, and the cutting depth should penetrate 3 cm into the concrete surface.

[0022] The technical effects achieved by this invention are as follows:

[0023] (1) This scheme uses a new type of MgO expanding agent, which requires less water for reaction and has more stable hydration products compared with traditional expanding agents. The shrinkage-compensating concrete prepared with MgO expanding agent has a lower water-cement ratio, a denser microstructure of hardened paste, higher concrete strength, better durability, and more stable performance in the later stage. After the concrete is poured, it is advisable to cover or spray it for curing immediately before initial setting. Large-volume concrete should be kept warm and moist to reduce free shrinkage of the structure, prevent cracks, and ensure the construction quality of the pool. This will achieve waste reduction, resource utilization, and harmless treatment, play an important role in energy conservation and emission reduction, and bring huge social and environmental benefits.

[0024] (2) In the construction treatment of the waterproof and anti-corrosion layer base layer, the inside corners of the pool are ground and filled with epoxy mortar to form an arc with R=50, so that the waterproof and anti-corrosion layer and the structural layer are tightly and smoothly bonded; the ends of the special water-stop tie bolts used to fix the side wall template on the pool wall should be cut off, and the cutting depth should be 3cm into the concrete surface (control the depth and do not expose the side wall reinforcement). Then, the cut part is filled with epoxy mortar; a fiberglass mesh is added at the joint of the pool wall template to improve the quality of the anti-corrosion layer construction.

[0025] (3) The construction joint of this scheme adopts a method of using a dense mesh with small holes and a water-stop steel plate. After the concrete is poured, the interface of the dense mesh forms a rough surface, which provides an ideal joint surface for the next concrete pour. There is no need for manual roughening and cleaning, and the second concrete pour can be carried out, so that the new and old concrete are combined into a solid whole, which greatly improves the joint quality and the anti-leakage performance of the joint. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the anti-corrosion and anti-leakage construction technology for waste incineration power plant waste pools according to the present invention. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1 This invention provides a construction technology for corrosion prevention and leakage prevention of waste pits in waste incineration power plants, including the following steps:

[0030] S1. Reinforcement sub-item construction: Binding of bottom reinforcement, binding of wall reinforcement, binding of frame beam reinforcement and binding of column reinforcement;

[0031] Pool bottom reinforcement binding: Clean the base layer, mark the reinforcement position lines, bind the reinforcement of the pool bottom slab and bottom beam, bind the wall reinforcement, and place concrete temperature-humidity and stress-strain sensors;

[0032] Pool wall reinforcement binding: straightening and cleaning reinforcement bars, binding hidden column reinforcement bars, binding vertical ladder reinforcement bars, binding horizontal positioning reinforcement bars, binding vertical reinforcement bars, binding horizontal reinforcement bars, and binding hidden beam reinforcement bars;

[0033] Frame beam reinforcement binding: draw the spacing of the stirrups of the main and secondary beams, place the stirrups of the main and secondary beams, pass through the bottom longitudinal bars and bent-up bars of the main beam, pass through the bottom longitudinal bars of the secondary beam and fix them with the stirrups, pass through the upper longitudinal reinforcement of the main beam and bind them according to the stirrup spacing, and pass through the upper longitudinal reinforcement of the secondary beam and bind them according to the stirrup spacing.

[0034] Column reinforcement binding: marking control lines, cleaning reinforcement bars, placing stirrups, connecting column reinforcement bars, installing positioning stirrups, marking stirrup spacing lines, and binding column stirrups;

[0035] S2. Formwork sub-item construction: column formwork construction, beam formwork construction, pool wall formwork construction;

[0036] Column formwork construction: marking lines, processing and installing column formwork, reinforcing the formwork, correcting verticality, and acceptance;

[0037] Beam formwork construction: marking lines, erecting scaffolding, installing column head and beam bottom formwork, cambering, tying beam reinforcement, cleaning the bottom slab, and sealing the side formwork;

[0038] Pool wall formwork construction: marking lines, processing and installing formwork, reinforcing formwork, and correcting verticality;

[0039] S3. Concrete sub-construction: preparation of materials, transportation of commercial concrete, slump testing, concrete pouring, and concrete curing.

[0040] ① Material Preparation: The entire pool body will be constructed using ready-mixed concrete. Considering that the shrinkage-compensating concrete prepared with MgO expansive agent has a lower water-cement ratio, a denser microstructure in the hardened paste, higher concrete strength, better durability, and more stable performance in the later stages, it has been decided to use a magnesium-based expansive agent as an additive in the concrete, with a dosage of 5% to 6%. The quality of raw materials must comply with national standards. Upon arrival of materials, certificates of conformity and test reports will be checked. Retesting will be conducted based on the quantity and batch of materials received, and only materials that pass the tests can be used.

[0041] Furthermore, by modifying the calcination temperature, fineness, and dosage, the reactivity, expansion age, and expansion amount of the MgO expanding agent are designed. Based on the shrinkage curves of concrete at various ages, precise compensation for concrete shrinkage is achieved. Combined with specialized research on temperature-humidity and stress-strain monitoring within large-volume concrete, a set of safeguards against concrete cracking is formed.

[0042] ② Before pouring concrete, the base layer and formwork should be cleaned. Use a blower to remove dust and loose soil from the base layer or formwork, and rinse and moisten with water. There should be no standing water on the surface.

[0043] ③ Concrete transportation must prevent segregation, ensuring the specified slump, air content, and sufficient time for pouring and compaction before initial setting. Strictly control the water-cement ratio; the concrete slump should be around 120mm. The slump of each truckload of concrete must be measured; any truckload that fails to meet the standard should be discarded.

[0044] ④ The bottom slab of the pool is poured using the "sloping layer method". The sloping layer method is a continuous pouring method that advances horizontally in parallel and vertically in sloping layers, thin layers, natural flow, sequential advancement, and one-time completion. The thickness of each layer is 400mm ± 100mm, and the slope is ≤ 1:6. The concrete vibration work starts from the bottom of the poured layer and gradually moves upward. Construction joints must not be left in this method.

[0045] ⑤ When construction reaches the suspended formwork area, careful operation is required. Concrete must not be released directly from the pump pipe and impact the formwork. Instead, use a method of piling mortar nearby and spreading it with shovels to prevent significant impact on the formwork. Vibration should also be strictly controlled, with precise timing to prevent over-vibration that could cause formwork misalignment, and to prevent under-vibration that could result in poor bonding and become a weak point. During construction, a dedicated person should monitor the formwork; any misalignment should be immediately corrected (and measured and verified) to ensure the proper molding of the concrete at the suspended formwork area. During pouring, proceed parallel from one direction to the other, ensuring the bleed layer appears in one direction and concentrates at the end, then use a water pump to remove the bleed water from the raft.

[0046] ⑥ When pouring concrete for the bottom slab of the pool, each delivery pump should be equipped with 4 immersion vibrators, 2 at the unloading point and 2 at the bottom of the slope, to enhance the vibration quality. After discharge, the concrete at the discharge point should be vibrated first to promote flow slope, and then vibrated in an array from bottom to top. Strictly control the movement distance of the vibrator during vibration, paying particular attention to the vibration of the concrete upon entry into the formwork to prevent segregation and missed vibration. A backup generator should be provided in case of power failure and inability to use the vibrator. During vibration, insert the vibrator in a staggered pattern, moving it straight up and down, quickly inserting and slowly withdrawing it to ensure the concrete is compacted. The insertion points should be evenly spaced, with a distance of 50cm between points and 20cm from the formwork. Use a single row and column pattern, avoiding mixing with staggered patterns to prevent missed vibration. The vibration time should be carefully controlled, neither too long nor too short, generally between 20 and 30 seconds, until the concrete surface shows a slurry, no air bubbles appear, and the concrete stops settling. Avoid contact with the reinforcing steel during vibration. The vibrator should be moved in a row-and-column sequence, with each movement not exceeding 1.25 times the effective radius of the vibrator. The effective radius of a typical vibrator is 30-40 cm. Vibration should be performed with "quick insertion and slow withdrawal" to prevent incomplete compaction of the concrete; "vibrate the lower areas first, then the higher areas" to prevent "loosening" of the concrete at different elevations; and the vibrator must not collide with reinforcing bars or formwork during vibration.

[0047] Mark the reinforcing bars and foundation formwork with red paint to control the elevation of the foundation slab. The concrete placement, vibration, and surface treatment are all based on this marking.

[0048] The concrete surface should be leveled with a wooden shovel, then smoothed with a straightedge and wooden trowel. Water curing should be carried out after the exposed concrete surface is covered with burlap sacks or straw mats. Alternatively, direct watering or water storage can be used for curing. Water curing should ensure that the concrete surface is kept moist.

[0049] ⑦ The construction joint uses a fine-mesh mesh with small openings and a water-stop steel plate. After the concrete is poured, the joint of the fine-mesh mesh forms a rough surface, providing an ideal bonding surface for the next concrete pour. It eliminates the need for manual roughening and cleaning before the second concrete pour, allowing the old and new concrete to bond into a strong whole, greatly improving the joint quality and the anti-leakage performance of the joint.

[0050] ⑧ After pouring concrete, regularly monitor the temperature, humidity, stress, and strain inside the concrete in real time.

[0051] S4. Waterproofing and anti-corrosion construction of the pool bottom: Foundation trench cleaning: Remove sharp hard objects and mortar lumps protruding from the base surface, and pour and smooth 150mm thick C20 concrete, followed by 2mm thick HDPE waterproof membrane, 50mm thick C20 fine stone concrete, 1mm thick cement-based penetrating crystalline waterproof coating, waterproof and seepage-resistant reinforced concrete base slab (poured and smoothed), two coats of epoxy resin primer, 3mm thick epoxy mortar leveling layer, full coating of modified furan resin bonding material, 6mm thick YJ furan resin mortar overall surface layer, and a minimum 50mm thick concrete protective layer (with A8@200×200 bidirectional steel mesh inside), and create a 1% slope.

[0052] S5. Waterproofing and anti-corrosion construction of pool walls (ground): white inorganic coating (for the incineration room), white interior latex paint, 2mm thick water-resistant putty leveling, 20mm thick DP mortar compacted topcoat, 1.5mm thick polymer cement-based waterproof coating, 80mm thick DP mortar base coat, waterproof and seepage-resistant reinforced concrete sidewalls, two coats of epoxy resin base coat, 3mm thick epoxy mortar leveling layer, full coating of modified furan resin bonding material, 4mm thick YJ furan resin mortar overall surface layer, and 0.5mm thick YJ furan resin topcoat adhesive.

[0053] S6. Waterproofing and anti-corrosion construction of pool walls (underground): Backfill soil is compacted in layers, followed by a 50mm thick B1 grade extruded polystyrene board protective layer and a 2mm thick HDPE waterproof membrane. A 500mm~1mm thick cement-based penetrating crystalline waterproof coating is laid above the ground, along with waterproof and seepage-resistant reinforced concrete sidewalls, two coats of epoxy resin primer, a 3mm thick epoxy mortar leveling layer, a full coating of modified furan resin bonding material, a 4mm thick YJ furan resin mortar overall surface layer, and a 0.5mm thick YJ furan resin topcoat.

[0054] This also includes: ① Control of concrete density: By controlling the thickness (height) of concrete pouring, pouring in layers, and vibrating twice, ensuring that the concrete is vibrated and compacted without missing or over-vibrating, and avoiding phenomena such as pitting, honeycomb, holes, exposed reinforcement, and slag inclusion in gaps.

[0055] ② Control of chloride ion content and alkali content in structural concrete: These two indicators directly affect the durability of structural concrete, i.e., the building lifespan, and must comply with the provisions of the "Code for Design of Concrete Structures" (GB 50010-2015).

[0056] ③ Control of reinforcement protective layer: The transverse members adopt the independently developed cylindrical pads with grooves on the top, which have the characteristics of high strength, good stability and not easy deformation. The vertical members adopt fixed plastic pads, which are arranged at 1m intervals in both directions to ensure that the reinforcement is not exposed.

[0057] ④ Control of concrete curing: Test specimens cured under the same conditions on site should be prepared. Concrete should be cured using methods such as watering, covering and sealing, and moisturizing to ensure normal strength development and prevent or reduce the occurrence of cracks. This ensures the quality of concrete construction.

[0058] ⑤ Waterproof Layer Base: The base surface should be firm, dense, smooth, flat, and clean, free from defects such as hollow areas, looseness, sandiness, and pitting. The base is allowed to be damp, but there should be no standing water. Any sharp, hard objects or mortar lumps protruding from the base surface should be removed. If removal is not possible, a cement mortar finish should be applied, with a radius greater than 300 mm. Dust and debris should be thoroughly cleaned, especially at corners. Any stains or rust should be removed with sandpaper, wire brushes, or solvents. If there is pitting, it should be covered with epoxy putty, ensuring no gaps. For highly corrosive pool sidewalls (garbage pools, leachate collection pools, etc.), the ends of the special water-stop tie bolts used to fix the sidewall formwork should be cut off. The cut depth should penetrate 3 cm into the concrete surface (control the depth to avoid exposing the sidewall reinforcement), and then the cut area should be filled with epoxy putty. All inside and outside corners at the junction of plan and elevation should be made into uniform, smooth rounded corners with a radius of not less than 50 mm (or as required by design); all inside corners should be chamfered to 50 mm × 50 mm.

[0059] Expanding agent example:

[0060] The expansion agent formulation may also include 50 parts hydrazine sulfate and 50 parts sodium tetraborate.

[0061] The expansion agent in this embodiment is prepared as follows:

[0062] ① Dissolve the rate regulating material (sodium tetraborate) in 3-7 times its volume of water to obtain a solution;

[0063] ② The solution is added dropwise to the gas-generating material (hydrazine sulfate) under high-speed stirring at a speed of 2000 r / min-3000 r / min;

[0064] ③Drying and grinding.

[0065] In summary, hydrazine sulfate is stable in air and does not readily absorb moisture. Sodium tetraborate is a colorless crystal that effloresces in air and can be dehydrated into anhydrous sodium tetraborate when heated to 400-500°C. It melts into a glassy substance at 878°C. The use of the expanding agent in this embodiment ensures superior antifreeze performance. Furthermore, when the expanding agent in this embodiment is not used, not only does the antifreeze performance deteriorate, but the shrinkage rate also deteriorates.

[0066] In some embodiments, if there is a rough surface before anti-corrosion construction of the pool body, it should be covered with epoxy putty without gaps. For highly corrosive pool sidewalls (garbage pools, leachate collection pools, etc.), the ends of the special water-stop tie bolts used to fix the sidewall formwork should be cut off, with the cut depth extending 3 cm into the concrete surface (controlling the depth to avoid exposing the sidewall reinforcement). The cut area should then be filled with epoxy putty. All internal and external corners at the junction of horizontal and vertical surfaces should be made into uniform, smooth rounded corners with a radius of not less than 50 mm (or as required by design); all internal corners should be chamfered to 50 mm × 50 mm.

[0067] In practical applications, the main equipment used in implementing this process includes: tower cranes, woodworking circular saws, planers, iron and wood hammers, adjustable wrenches, spirit levels, steel tape measures, plumb lines, scaffold boards, rebar straightening machines or winches, rebar cutting machines or rebar cutters, manual bending wrenches or rebar bending machines, loaders or wheelbarrows, concrete pumps or buckets, immersion vibrators, concrete hoppers, shovels, etc.

[0068] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. Corrosion-proof and leakage-proof construction technology for waste pits in waste incineration power plants, characterized in that, Includes the following steps: S1. Reinforcement sub-item construction: Binding of bottom reinforcement, binding of wall reinforcement, binding of frame beam reinforcement and binding of column reinforcement; S2. Formwork sub-item construction: column formwork construction, beam formwork construction, pool wall formwork construction; S3. Concrete sub-construction: preparation of materials, transportation of commercial concrete, slump testing, concrete pouring, and concrete curing. S4. Waterproofing and anti-corrosion construction of the pool bottom: Foundation trench cleaning: Remove sharp hard objects and mortar lumps protruding from the base surface, pour and smooth 150mm thick C20 concrete as you go, 2mm thick HDPE waterproof membrane, 50mm thick C20 fine stone concrete, 1mm thick cement-based penetrating crystalline waterproof coating, waterproof and seepage-resistant reinforced concrete base slab, two coats of epoxy resin primer, 3mm thick epoxy mortar leveling layer, full coating of modified furan resin bonding material, 6mm thick YJ furan resin mortar overall surface layer, and a minimum 50mm thick concrete protective layer. S5. Waterproofing and anti-corrosion construction of pool walls and floors: using white inorganic coating, white inner latex paint, full application of 2mm thick water-resistant putty for leveling, 20mm thick DP mortar compacted topcoat, 1.5mm thick polymer cement-based waterproof coating, 80mm thick DP mortar base coat, waterproof and seepage-resistant reinforced concrete sidewalls, two coats of epoxy resin base coat, 3mm thick epoxy mortar leveling layer, full application of modified furan resin bonding agent, 4mm thick YJ furan resin mortar overall surface layer, and 0.5mm thick YJ furan resin topcoat adhesive. S6. Waterproofing and anti-corrosion construction of the pool wall: Backfill soil is compacted in layers, followed by a 50mm thick B1 grade extruded polystyrene board protective layer, a 2mm thick HDPE waterproof membrane, a 500mm~1mm thick cement-based penetrating crystalline waterproof coating laid above the ground, waterproof and seepage-resistant reinforced concrete sidewalls, two coats of epoxy resin primer, a 3mm thick epoxy mortar leveling layer, a full coating of modified furan resin bonding material, a 4mm thick YJ furan resin mortar overall surface layer, and a 0.5mm thick YJ furan resin topcoat adhesive. Step S3 includes the following detailed steps: ① Material preparation: Magnesium-based expansion agent is used as an additive in concrete, with a dosage of 5% to 6%; By changing the calcination temperature, fineness, and dosage, the reactivity, expansion age, and expansion amount of the MgO expansion agent are designed. Based on the shrinkage curves of concrete at different ages, the shrinkage of the concrete is precisely compensated. Combined with a special study on the internal temperature-humidity and stress-strain monitoring of large-volume concrete, a set of safeguards to prevent concrete cracking is formed. The expanding agent also includes hydrazine sulfate and sodium tetraborate; ② Before pouring concrete, the base layer and formwork should be cleaned. Use a blower to remove dust and loose soil from the base layer or formwork, and rinse and moisten with water. There should be no standing water on the surface. ③ The transport of ready-mixed concrete must not cause segregation, ensuring the specified slump, air content, and sufficient time for pouring and compaction before the initial setting of the concrete; ④ The bottom slab of the pool is poured using the "sloping layer method". The sloping layer method is a continuous pouring method that advances horizontally in parallel and vertically in a sloping layer, thin layer pouring, natural flow, sequential advancement and one-time completion. The thickness of each layer is 400mm ± 100mm, and the slope is ≤ 1:

6. The concrete vibration work starts from the bottom of the pouring layer and gradually moves upward. ⑤ When construction reaches the formwork hoisting point, care must be taken to ensure that concrete is not released directly from the pump pipe and impacts the formwork; ⑥ After the concrete is discharged, first vibrate the concrete at the discharge point to promote the flow slope. Then, vibrate it in an array from bottom to top. During the vibration process, insert the concrete into the quincunx pattern, straight up and down, quickly inserting and slowly withdrawing to make the concrete compacted. The insertion points should be uniform, and the distance between the insertion points should be controlled at 50cm. The distance from the formwork should be 20cm. ⑦ The construction joint is constructed using a fine mesh mesh with small openings and a water-stopping steel plate; ⑧ After pouring concrete, regularly monitor the temperature, humidity, stress, and strain inside the concrete in real time.

2. The anti-corrosion and anti-leakage construction technology for waste incineration power plant waste pits according to claim 1, characterized in that: In step S3 of concrete curing, water curing should be carried out after covering the exposed concrete surface with burlap sacks or straw mats, or directly using water sprinkling or water storage curing methods. Water curing should ensure that the concrete surface is kept moist.

3. The anti-corrosion and anti-leakage construction technology for waste incineration power plant waste pits according to claim 1, characterized in that: In step S5, when it is not possible to remove sharp, hard objects or mortar lumps protruding from the base surface during the waterproofing and anti-corrosion construction of the pool wall and floor, the surface is covered with cement mortar, and the radius of the mortar arc should be greater than 300 mm. After grinding the inside and outside corners of the pool, epoxy putty is used to fill them into an arc with R=50.

4. The anti-corrosion and anti-leakage construction technology for waste incineration power plant waste pits according to claim 1, characterized in that: In step S4, before waterproofing and anti-corrosion construction, the ends of the water-stop tie bolts used to fix the side wall template on the side wall of the highly corrosive pool are cut off, and the cutting depth should penetrate 3 cm into the concrete surface.

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