Pouring type solidified soil preparation system and method based on precise measurement of clay fine particles

Abstract

The invention discloses a pouring type solidified soil preparation system and method based on clay fine particle accurate metering. The system comprises a crushing, screening and weighing system, a clay fine particle accurate metering system, a transportation system and a mixing system. The conveying system is used for conveying materials weighed and metered by the crushing, screening and weighing system and the clay fine particle accurate metering system to the mixing system, the clay fine particle accurate metering system comprises a suspended collection hopper, clay fine particles are added into the collection hopper, a plurality of weighing sensors are arranged on the collection hopper, and the weighing sensors are used for weighing the materials. A first spiral conveyor is arranged at the bottom of the collecting hopper and used for conveying materials in the collecting hopper to a conveying system according to the set using amount. The method has the advantages of accurate measurement of clay fine particles, stable performance of prepared solidified soil, no need of secondary processing such as crushing and screening of engineering solid wastes, high resource utilization rate of waste residue soil and the like, and can be applied to preparation of various kinds of solidified soil.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of civil engineering. More particularly, the present application relates to a pouring type solidified soil preparation system and method based on accurate metering of clay fine particles. BACKGROUND

[0002] Traditional roadbed filling and base construction mainly rely on natural sand and gravel materials, but with the increasing environmental protection requirements and resource shortage, the recycling of engineering waste materials has become an important research direction. As a new type of green building material, solidified soil has been widely used in road engineering, foundation pit backfilling and other fields in recent years. Its core advantage lies in the resource utilization of waste soil, engineering spoil, silt and other resources, reducing the dependence on natural sand and gravel materials, and improving construction efficiency.

[0003] Currently, in the field of solidified soil preparation technology, existing technologies mainly rely on manual or simple stirring equipment, which has poor mixing uniformity and cannot dynamically control material ratio and curing conditions, resulting in fluctuations in solidified soil quality. With the development of solidified soil preparation technology, complete solidified soil preparation systems have emerged, which have high mechanization degree and can achieve uniform material mixing and rough control of material ratio, but still lack accurate metering systems, making it difficult to accurately control the quality of clay fine particles and causing fluctuations in solidified soil quality.

[0004] Existing solidified soil preparation systems usually use weighing sensors to control the amount of clay or use flow meters to control the amount of clay after the clay is made into slurry. Both control methods have different defects. For example, patent "Abandoned soil liquid solidified soil manufacturing system" (Patent No. CN202421030064.1) uses a weighing sensor to control the amount of soil and soil slurry in the solidified soil manufacturing system, but lacks a soil weight review procedure and control method, which can cause difficulties in accurately controlling the amount of soil fine particles, affecting the ratio and performance of the solidified soil, resulting in poor strength, durability and stability of the solidified soil, and further affecting the safety and service life of the overall project. For example, patent "Flow state solidified soil construction system and construction method" (Patent No. CN202411276822.2) uses a flow meter to control the amount of clay after the soil is made into slurry in the solidified soil manufacturing system. This method requires uniformity of the slurry to ensure the accuracy of the flow meter in controlling the amount of clay, and the amount of clay slurry is huge, which increases the processing procedures of clay slurry and undoubtedly greatly increases the construction cost. Therefore, it is necessary to further develop a solidified soil preparation system and method that can accurately meter clay fine particles to effectively solve the problems of inaccurate control of clay fine particle content and multiple processing procedures in the solidified soil preparation process, thereby reducing construction costs and improving construction quality. SUMMARY

[0005] An object of the present application is to provide a pouring type solidified soil preparation system and method based on accurate metering of clay fine particles, which has the advantages of accurate metering of clay fine particles, stable performance of prepared solidified soil, no need for secondary processing such as crushing and screening of engineering solid waste, and high utilization rate of waste slag resources, and can be applied to the preparation of various solidified soils.

[0006] To solve the above technical problems, the present application provides a pouring type solidified soil preparation system based on accurate metering of clay fine particles, which comprises a crushing, screening and weighing system, an accurate metering system of clay fine particles, a conveying system and a mixing system; the crushing, screening and weighing system is used to crush and screen the large solid waste into a set particle size range, and weigh according to the set amount; the accurate metering system of clay fine particles is used to accurately weigh the fine particle solid waste; the conveying system is used to convey the materials weighed and metered by the crushing, screening and weighing system and the accurate metering system of clay fine particles to the mixing system, and the mixing system comprises a mixing barrel provided with multiple addition ports of other materials, and multiple materials are uniformly stirred in the mixing barrel to prepare pouring type solidified soil. The accurate metering system of clay fine particles comprises a suspension set material hopper, clay fine particles are added into the material hopper, multiple weighing sensors are arranged on the material hopper, and a first screw conveyor is arranged at the bottom of the material hopper to convey the materials in the material hopper to the conveying system according to the set amount.

[0007] Preferably, multiple rotating shafts are arranged above the first screw conveyor in the material hopper, the rotating shafts are driven to rotate by a motor, and multiple mud breaking rods are arranged on the rotating shafts in a staggered and spaced manner.

[0008] Preferably, the multiple rotating shafts are arranged in two layers, and the upper and lower rotating shafts are arranged in a staggered and parallel manner, and the central axes of the rotating shafts are arranged vertically to the central axis of the first screw conveyor.

[0009] Preferably, the crushing, screening and weighing system comprises a crusher, a cylindrical screening device and a weighing and feeding device connected in sequence through the conveying system, the crusher is used to crush the large solid waste, the cylindrical screening device is used to screen the crushed solid waste to a set particle size range, and the weighing and feeding device is used to dynamically weigh the screened solid waste.

[0010] Preferably, the conveying system comprises multiple belt conveyors, which are all arranged upwardly inclined along the conveying direction, and the multiple belt conveyors are connected in sequence to the crusher and the cylindrical screening device, the cylindrical screening device and the weighing and feeding device, and the weighing and feeding device and the mixing barrel, and the first screw conveyor conveys the materials to the belt conveyor between the weighing and feeding device and the mixing barrel.

[0011] Preferably, the mixing system further comprises a curing agent slurrying stirring storage system for preparation and storage of curing agent slurry, a water metering system is arranged above the curing agent slurrying stirring storage system for metering the amount of water added during preparation of the curing agent slurry, and the prepared curing agent slurry is transported to the mixing drum by a conveying system.

[0012] Preferably, the mixing system further comprises a stock bin for storing curing agents and additives, and the stored curing agents are transported to the curing agent slurrying stirring storage system, and the stored additives are transported to the mixing drum.

[0013] Preferably, the mixing drum is further provided with a curing agent metering system and an additive metering system for metering the amount of curing agent slurry and additives added to the mixing drum, respectively.

[0014] Preferably, the mixing drum is further provided with a water pipeline for supplying water to the mixing drum, and the water pipeline is connected to a water tank; and the mixing drum is further provided with a stirring system for stirring the materials.

[0015] The application further provides a method for preparing a pouring type solidified soil by using the pouring type solidified soil preparation system based on accurate metering of clay fine particles, which comprises the following steps: Step one: the large solid waste is crushed by a crusher, then transported to a cylindrical screening device to screen the crushed material according to a set particle size range, and the screened material is transported to a weighing and feeding device to be weighed and then transported to a mixing system according to a set amount; Step two: the fine particle solid waste is processed by a clay fine particle accurate metering system and double-metered according to a set amount, and the error range of the two times of metering is ±0.5%, and the accurately metered material is transported to the mixing system; Step three: the curing agent is transported to a curing agent slurrying stirring storage system, mixed with water to form a curing agent slurry, and transported to the mixing system according to a set amount; the additives and water are both transported to the mixing system according to a set amount; and all the materials are stirred uniformly in the mixing system to prepare the pouring type solidified soil.

[0016] The application at least has the following beneficial effects: (1) In the pouring type solidified soil preparation system based on accurate metering of clay fine particles, the cylindrical screening device is only provided with a sieve hole size of 31.5 mm to control the maximum particle size of the crushed material, so that the crushed material with a particle size below 31.5 mm can be directly configured in a full-graded manner to prepare the pouring type solidified soil without screening, and the comprehensive utilization rate of the solid waste resources is about 100%.

[0017] (2) The application is based on the self-breaking screening and weighing system of the clay fine particle accurate metering pouring type solidified soil preparation system, engineering solid waste (road milling slag soil, concrete waste, etc.) can be directly put into the system to prepare solidified soil, without secondary processing, reducing the related process, improving the solidified soil preparation efficiency, and effectively reducing the construction cost.

[0018] (3) The clay fine particle accurate metering system of the application has the flow metering of the first screw conveyor and the weight loss metering of the weighing sensor, which can accurately meter clay, silt and other fine particles, and the double metering is not only reliable but also has high metering accuracy, so that the solidified soil mixing ratio control is more accurate during the construction process, the prepared solidified soil has more stable performance, and the construction quality can be greatly improved.

[0019] Other advantages, objects and features of the application will be embodied in part by the following description, and part will be understood by those skilled in the art through research and practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 The equipment diagram of the application is based on the clay fine particle accurate metering pouring type solidified soil preparation system; Fig. 2 The front view of the clay fine particle accurate metering system of the application; Fig. 3 The side view of the clay fine particle accurate metering system of the application; Fig. 4 The top view of the clay fine particle accurate metering system of the application.

[0021] Reference signs: 1 - jaw crusher; 2 - cylindrical screening equipment; 3 - belt conveyor; 4 - weighing and feeding equipment; 5 - clay fine particle accurate metering system; 6 - silo; 7 - solidified agent pulping, stirring and storing system; 8 - water metering system; 9 - stirring system; 10 - solidified agent metering system; 11 - additive metering system; 12 - water pipeline; 13 - water pool; 14 - second screw conveyor; 5-1 - first screw conveyor; 5-2 - rotating shaft; 5-3 - upper and lower layer motor; 5-4 - mud removing rod; 5-5 - material hopper; 5-6 - weighing sensor. DETAILED DESCRIPTION

[0022] In order to better understand the purpose, structure and function of the application, the application will be further described in detail below in combination with the drawings, so that those skilled in the art can implement it according to the description.

[0023] It should be noted that the experimental methods described in the following embodiments are conventional methods, and the reagents and materials are commercially available unless otherwise specified. In the description of the present application, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0024] As shown in Figs. 1 to 4 The present application provides a clay fine particle accurate metering based on pouring type solidified soil preparation system, which mainly consists of the following four parts: 1) The crushing, screening and weighing system consists of a jaw crusher 1, a cylindrical screening device 2 and a weighing and feeding device 4. The crushing, screening and weighing system is used to crush and screen the solid waste into a set size range, and weigh according to the set amount. The crushing, screening and weighing system includes a crusher, a cylindrical screening device and a weighing and feeding device connected in turn through a conveying system. The crusher is used to crush the solid waste. The cylindrical screening device is used to screen the crushed solid waste. The size of the particles screened by the cylindrical screening device is set to control the size range of the screened material within the set range. The weighing and feeding device is used to dynamically weigh the screened solid waste. The weighing and feeding device can be a belt scale, which is a dynamic weighing device installed on a belt conveyor. The screened solid waste is conveyed to the belt conveyor of the weighing and feeding device by the belt conveyor. The belt scale dynamically weighs the conveyed solid waste. When the set amount is reached, the conveying port is closed, and the weighed set amount is conveyed to the next belt conveyor.

[0025] 2) The clay fine particle accurate metering system 5 consists of a first screw conveyor 5-1, a shaft 5-2, upper and lower layer motors 5-3, a mud breaking rod 5-4, a collecting hopper 5-5 and a weighing sensor 5-6. The clay fine particle accurate metering system is used to accurately weigh the fine particle solid waste. Figs. 2 to 4As shown, the precise metering system for fine clay particles includes a suspended aggregate hopper, which is suspended by a support frame. Fine clay particles are added to the aggregate hopper. A plurality of weighing sensors are provided on the aggregate hopper. A first screw conveyor is provided at the bottom of the aggregate hopper, which is used to convey the material in the aggregate hopper to the transportation system according to the set amount. The material is conveyed according to the set flow rate by controlling the rotation speed of the first screw conveyor. A plurality of rotary pumps are provided above the first screw conveyor in the aggregate hopper, which are driven to rotate by a motor, and a plurality of mud-dissolving rods are provided on the rotary shaft at staggered intervals. The plurality of rotary shafts are arranged in two layers, and the upper and lower rotary shafts are staggered and arranged in parallel. The central axis of the rotary shaft is perpendicular to the central axis of the first screw conveyor. The first screw conveyor conveys the material to the belt conveyor between the weighing and feeding equipment and the mixing barrel.

[0026] 3) The transport system consists of a belt conveyor 3 and a second screw conveyor 14. This transport system is used to transport materials weighed and measured by the crushing, screening, and weighing systems and the clay fine particle precision metering system to the mixing system. The transport system includes multiple belt conveyors, each arranged upwardly and tilted along the conveying direction, connecting from the output of the previous device to the input of the next device. These multiple belt conveyors sequentially connect the crusher to the drum screening device, the drum screening device to the weighing and feeding device, and finally the weighing and feeding device to the mixing drum.

[0027] 4) The mixing system consists of a silo 6, a curing agent slurry mixing and storage system 7, a water metering system 8, a mixing system 9, a curing agent metering system 10, an admixture metering system 11, a water pipeline 12, and a water tank 13. The mixing system includes a mixing tank with multiple inlets for adding other materials. These materials are mixed evenly within the mixing tank to form castable solidified soil. The curing agent slurry mixing and storage system is used to prepare and store curing agent slurry. A water metering system is located above the curing agent slurry mixing and storage system to measure the amount of water added during the curing agent slurry preparation process. The prepared curing agent slurry is then transported to the mixing tank via a transport pipeline. The silo is used to store curing agent and admixtures. The curing agent is transported to the curing agent slurry mixing and storage system via a second screw conveyor, and the admixtures are also transported to the mixing tank via a second screw conveyor. The curing agent metering system and the admixture metering system are used to measure the amount of curing agent slurry and admixture added to the mixing tank, respectively. The mixing barrel is also equipped with a water pipe for supplying water to the mixing barrel, which is connected to a water tank. A stirring system is also installed within the mixing barrel for stirring the materials. The water metering system, the curing agent metering system, and the admixture metering system can all be configured as flow meters.

[0028] The pouring type solidified soil preparation process using the clay fine particle accurate metering based pouring type solidified soil preparation system of the application includes three parts, and the specific implementation method is as follows: 1. Engineering solid waste crushing, screening and metering The engineering solid waste is processed by a crushing, screening and weighing system. The jaw crusher in the crushing, screening and weighing system can crush large solid waste such as road milling slag and concrete waste in the engineering solid waste. The engineering solid waste can be crushed into crushed materials within a certain particle size range. The cylindrical screening device can screen out crushed materials with a particle size of less than 31.5 mm. The weighing and feeding device can store and weigh the screened materials.

[0029] The engineering solid waste (such as road milling slag and concrete waste) is loaded by a loader to the jaw crusher for crushing. The crushed materials are transported by a belt conveyor to the cylindrical screening device for screening. After screening, the crushed materials with a particle size of less than 31.5 mm are transported by a belt conveyor to the weighing and feeding device for storage. The crushed materials with a particle size of more than 31.5 mm are collected and transported back to the jaw crusher for secondary crushing. The weighing and feeding device weighs and feeds the materials according to the solidified soil mixing ratio during mixing. Finally, the materials are transported by a belt conveyor to the mixing system.

[0030] 2. Clay processing and metering The clay fine particle accurate metering system can process and meter clay, silt and other fine particle solid waste in engineering solid waste. The clay fine particle accurate metering equipment has a motor-driven rotating shaft, wherein a plurality of mud breaking rods are distributed on the rotating shaft, the rotating shaft is distributed as two upper layers and three lower layers, and the distribution is staggered. The lowermost layer is a first screw conveyor, which can meter the flow of clay. The weighing sensor is distributed at the four corners of the collecting hopper, which can meter the weight of the clay. The clay fine particle accurate metering adopts double metering mode. After the amount of clay fine particles is determined according to the mixing ratio, the system automatically calculates the required clay flow and weight. First, the first screw conveyor outputs clay according to the determined clay flow, and stops outputting when the output flow is reached. The weighing sensor rechecks the output clay weight according to the clay weight loss in the collecting hopper. If the required weight is not reached, the first screw conveyor starts to run slowly until the clay weight loss reaches the required weight. The error range of the two measurements is ±0.5%. If the error of the two measurements exceeds 0.5%, the feeding speed will be reduced, and after dynamic matching, normal feeding will be performed. Feeding is a continuous process, and the error range of the two measurements is continuously monitored. If the feeding amount is close to being reached, the feeding speed of the first screw conveyor will be reduced. This generally only occurs before the feeding amount is completed. If the error range exceeds the set range during the feeding process, dynamic adjustment is performed, such as reducing or increasing the running speed of the first screw feeder or the belt feeder, so that the output amount is reduced, and when the expected weight is close to being reached, a small amount of material is slowly output to control the error.

[0031] After the clay enters the collecting hopper, it is treated by the mud breaking rod to ensure the uniformity of the soil particles after mixing. The uniformly mixed clay fine particles enter the first screw conveyor for output. The volume flow of clay transported by the first screw conveyor is fixed, which can meter the flow of clay. The weighing sensor can sense the weight of the output clay, which can meter the weight loss of the clay. The weighing sensor can recheck and confirm the clay flow to achieve the purpose of accurate metering of clay fine particles. The double metering of the system is not only reliable but also has high metering accuracy, which can accurately control the accurate output amount of clay fine particles. During mixing, the system meters and feeds according to the mixing ratio of the solidified soil, and finally transports it to the mixing system by the belt conveyor.

[0032] Solidified soil mixing The crushed material, clay, solidifying agent, additive, water and other materials are mixed into castable solidified soil by the mixing system. The silo in the mixing system is responsible for the storage of the solidifying agent and additive. The solidifying agent slurry preparation and storage system is responsible for the preparation and storage of the solidifying agent slurry. The water metering system can meter the amount of water. The mixing system is responsible for the mixing of the solidified soil. The solidifying agent metering system is responsible for the metering of the amount of solidifying agent slurry. The additive metering system is responsible for the metering of the amount of additive. The water pipeline supplies water to the mixing system. The water tank is responsible for water supply.

[0033] The curing agent, additive and other materials are fed from the silo to the conveying system, the curing agent is conveyed by the second screw conveyor to the curing agent pulping and stirring storage system, mixed with water for pulping and stirring and then stored for use, and the additive is also conveyed by the second screw conveyor to the additive metering system for storage and standby; according to the mixing ratio of the solidified soil, the measured clay, screened and crushed materials and other materials are conveyed to the stirring system, the curing agent metering system, the additive metering system and the water metering system add appropriate amount of curing agent slurry, additive and water to the stirring system, and the product pouring type solidified soil is discharged from the discharge port of the stirring system after being stirred uniformly.

[0034] Example 1 1# Highway pouring type solidified soil base construction, its related basic information is as follows: the construction section is a large and medium repair maintenance section, the design speed is 80km / h of the second class highway, the base layer design width is 12.3m, the thickness is 32cm; the subbase design width is 12.3m, the thickness is 20cm; the pouring type solidified soil is used for construction of the base layer. The pouring type solidified soil mixing ratio is shown in Table 1, the 7d unconfined compressive strength of the base layer solidified soil is not less than 5Mpa, and the 7d unconfined compressive strength of the subbase solidified soil is not less than 5Mpa.

[0035] Table 1 Pouring type solidified soil base layer and subbase mixing ratio Step 1: Set up the mixing site, install the pouring type solidified soil preparation system based on accurate measurement of clay fine particles, and configure inorganic binder recycling material, waste soil recycling material and water pool.

[0036] Step 2: The jaw crusher is configured with a loader, and the inorganic binder recycling material is loaded by the loader to the jaw crusher for crushing treatment; Step 3: The crushed material is transported by the belt conveyor to the cylindrical screening equipment for screening treatment; Step 4: After the crushed material is screened, the crushed material with particle size below 31.5mm is transported by the belt conveyor to the weighing and feeding equipment for storage and standby, and the crushed material with particle size above 31.5mm is returned to the jaw crusher for secondary crushing; Step 5: The accurate measurement system of clay fine particles is configured with a excavator, and the waste soil recycling material is transferred by the excavator to the material hopper of the accurate measurement system of clay fine particles for desliming treatment and storage standby; Step 6: The curing agent, additive and other materials are transported from outside the field to the silo for storage standby; Step 7: Before mixing, the curing agent is discharged from the silo, conveyed by the second screw conveyor to the curing agent pulping and stirring storage system, mixed with water for pulping and stirring and then stored for use, and then conveyed to the mixing barrel through the conveying pipeline; Step 8: Before mixing, the admixture is discharged from the silo and transported to the admixture metering system storage by the second screw conveyor; Step 9: Before mixing, the weighing feeding device weighs the crushed material according to the solidified soil mixture ratio, and the belt conveyor transports the material to the mixing system; Step 10: Before mixing, the waste soil recycling material enters the first screw conveyor for transportation and discharge, and the clay fine particle accurate metering system meters the waste soil recycling material according to the solidified soil mixture ratio, and the belt conveyor transports the material to the mixing system; Step 11: Before mixing, the solidified agent metering system, the admixture metering system, and the water metering system add the appropriate amount of solidified agent slurry, cement, and water to the mixing system according to the solidified soil mixture ratio; Step 12: After adding all the materials to the mixing system, mix them evenly to make the pouring type solidified soil, and discharge the material from the discharge port of the mixing system.

[0037] It can be understood that the present application is described by some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the present application. Although the embodiments of the present application have been disclosed as above, it is not limited to the applications listed in the specification and the embodiments, and it can be fully applied to various fields suitable for the present application, and additional modifications can be easily realized by those skilled in the art, therefore, the present application is not limited to specific details and the figures shown and described herein, and the present application is not limited to the general concept defined by the claims and the equivalent scope.

Claims

1. A pouring type solidified soil preparation system based on precise measurement of fine clay particles, characterized by: The system comprises a crushing, screening and weighing system, a clay fine particle precision metering system, a transportation system and a mixing system; the crushing, screening and weighing system is used to crush and screen large pieces of solid waste into a set particle size range, and weigh them according to the set amount; the clay fine particle precision metering system is used to accurately weigh fine-particle solid waste; the transportation system is used to transport the materials weighed by the crushing, screening and weighing system and the clay fine particle precision metering system to the mixing system, and the mixing system includes a mixing barrel provided with multiple inlets for adding other materials. Multiple materials are mixed evenly in the mixing barrel to form castable solidified soil; Among them, the precise metering system for fine clay particles includes a suspended hopper, into which fine clay particles are added. A plurality of weighing sensors are provided on the hopper, and a first screw conveyor is provided at the bottom of the hopper, which is used to transport the material in the hopper to the transportation system according to the set amount.

2. The pouring type solidified soil preparation system based on precise measurement of clay fine particles according to claim 1 is characterized in that: A plurality of rotary pumps are arranged above the first screw conveyor in the collecting hopper and are driven to rotate by a motor. A plurality of mud-dissolving rods are arranged on the rotary shaft at staggered intervals.

3. The pouring type solidified soil preparation system based on precise measurement of fine clay particles according to claim 2, characterized in that: The plurality of rotating shafts are arranged in two layers, and the upper and lower rotating shafts are arranged in parallel and staggered, and the central axis of the rotating shaft is arranged perpendicular to the central axis of the first screw conveyor.

4. The pouring type solidified soil preparation system based on precise measurement of clay fine particles according to claim 1, characterized in that: The crushing, screening and weighing system includes a crusher, a drum screening device and a weighing feeding device connected in sequence through a transportation system. The crusher is used to crush large pieces of solid waste, the drum screening device is used to screen the crushed fixed waste to a set particle size range, and the weighing feeding device is used to dynamically weigh the screened fixed waste.

5. The pouring type solidified soil preparation system based on precise measurement of fine clay particles according to claim 1, characterized in that: The transportation system includes multiple belt conveyors, all of which are arranged upwardly inclined along the conveying direction. The multiple belt conveyors are sequentially connected to the crusher and the drum screening equipment, the drum screening equipment and the weighing and feeding equipment, the weighing and feeding equipment and the mixing barrel. The first screw conveyor transports the material to the belt conveyor between the weighing and feeding equipment and the mixing barrel.

6. The pouring type solidified soil preparation system based on precise measurement of clay fine particles according to claim 1, characterized in that: The mixing system also includes a curing agent slurry stirring and storage system, which is used for the preparation and storage of curing agent slurry. A water metering system is provided above the curing agent slurry stirring and storage system, which is used to measure the amount of water added during the preparation of the curing agent slurry. The prepared curing agent slurry is transported to the mixing barrel through a transport pipeline.

7. The pouring type solidified soil preparation system based on precise measurement of fine clay particles according to claim 6, characterized in that: The mixing system further comprises a silo for storing a curing agent and an admixture. The stored curing agent is transported to a curing agent slurry mixing storage system, and the stored admixture is transported to a mixing barrel.

8. The pouring type solidified soil preparation system based on precise measurement of fine clay particles according to claim 7, characterized in that: The mixing barrel is also provided with a curing agent metering system and an admixture metering system, which are used to respectively measure the amount of curing agent slurry and the amount of admixture added to the mixing barrel.

9. The pouring type solidified soil preparation system based on precise measurement of fine clay particles according to claim 1, characterized in that: The mixing barrel is also provided with a water pipeline for supplying water to the mixing barrel, and the water pipeline is connected to a water pool; the mixing barrel is also provided with a stirring system for stirring the material.

10. A method for preparing cast-type solidified soil based on a cast-type solidified soil preparation system with precise measurement of fine clay particles, characterized in that: The steps include: Step 1: Large pieces of solid waste are crushed by a crusher and then transported to a drum screening device to screen the crushed material according to the set particle size range. The screened material is transported to a weighing feeding device for weighing. After being weighed according to the set amount, it is transported back to the mixing system; Step 2: Fine solid waste particles are processed by the clay fine particle precision metering system and double-metered according to the set dosage. The error range of the two measurements is ±0.5%. The accurately measured materials are then transported to the mixing system. Step 3: The curing agent is transported to the curing agent slurry mixing and storage system, mixed with water to form curing agent slurry, and transported to the mixing system according to the set dosage; the admixture and water are transported to the mixing system according to the set dosage; all materials are evenly mixed in the mixing system to form castable cured soil.

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