Process for preparing a reclamation solidification composition and reclamation solidification soil composition

Abstract

The application discloses a preparation method of a reclamation solidification composition and the reclamation solidification composition, and the method comprises the following steps: providing a stirring pool; constructing a CSM ground-connected wall to replace first waste soil in a geological body and obtain CSM waste material; constructing a DJM deep high-pressure jetting and stirring pile to replace second waste soil in the geological body and obtain DJM waste material; adding the CSM waste material, the DJM waste material and common fillers into the stirring pool according to a preset proportion; stirring the CSM waste material, the DJM waste material and the common fillers to form a waste soil mixture; and adding cement and water into the stirring pool according to the preset proportion and stirring to form the reclamation solidification composition. The application realizes the repeated use of waste soil by using the waste soil generated in the CSM method and the DJM method as raw materials for preparing the reclamation solidification composition, saves soil resources and reduces the construction cost of the reclamation project.

Description

Technical Field

[0001] This invention relates to the field of waste soil treatment technology for CSM and DJM, and particularly to a method for preparing a land reclamation solidification composition and a land reclamation solidification soil composition. Background Technology

[0002] CSM (Dual-Wheel Milling Deep Mixing Method): A new, efficient, and environmentally friendly construction technology for cement-soil mixing walls of equal thickness, also known as dual-wheel milling deep mixing technology. The main principle is to use a pair of hydraulic milling wheels at the lower end of the drill rod to mill, chip, and mix the original strata, while simultaneously adding cement slurry curing liquid. After being fully mixed with the broken original foundation soil, a cement-soil continuous wall with certain strength and good water-stopping performance is formed. During the construction of CSM, waste soil is often replaced from the soil, i.e., the geological body.

[0003] DJM (Powder Jet Deep Mixing) method: DJM construction technology is widely applicable to areas requiring deep foundation reinforcement and seepage prevention, such as newly reclaimed land. It can also be used as a temporary measure in engineering construction, such as retaining walls for deep foundation pits and waterproof curtains. In soft soil foundations, powder-column reinforcement material is introduced and forcibly mixed with the in-situ foundation soil, causing a chemical reaction between the soil and the reinforcement material. This method stabilizes the foundation soil while increasing its strength. The reinforcement material, delivered by compressed air, is ejected through gaps created by the rotating mixing blades. As the blades rotate, it is evenly mixed with the in-situ foundation soil. The air separated from the reinforcement material is discharged to the ground through the gap between the shaft and the soil. The curing agents used in the powder jet deep mixing method mainly include lime, cement, gypsum, and slag. Fly ash can be used as an admixture. During DJM construction, waste soil is often removed from the soil, i.e., the geological body.

[0004] When constructing near the sea, due to the limitations of the construction site and environmental protection requirements, it is impossible to dispose of the construction waste on-site. It is often necessary to transfer the construction waste to a designated waste disposal site for treatment. Furthermore, during land reclamation projects, a large amount of soil is often required as fill material. If the construction waste is directly transferred to the waste disposal site, it will not only waste soil resources but also greatly increase the construction cost of land reclamation.

[0005] Therefore, there is an urgent need to propose a method for preparing a land reclamation solidification composition and a land reclamation solidification soil composition, so as to reuse the waste soil generated by the CSM method and / or DJM method, thereby saving soil resources and construction costs. Summary of the Invention

[0006] The main objective of this invention is to provide a method for preparing a land reclamation solidification composition and a land reclamation solidification soil composition. This aims to address the limitations of existing technologies, such as the inability to treat construction waste on-site due to site constraints and environmental requirements. Construction waste often needs to be transferred to designated landfills for treatment. Furthermore, land reclamation projects frequently require large quantities of soil as fill material. Directly transferring construction waste to landfills not only wastes soil resources but also significantly increases the cost of land reclamation construction. Therefore, there is an urgent need to propose a method for preparing a land reclamation solidification composition and a land reclamation solidification soil composition to reuse waste generated by the CSM method and / or DJM method, thereby saving soil resources and construction costs.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] In a first aspect, the present invention provides a method for preparing a land reclamation solidification composition, the method comprising:

[0009] Provide mixing tank;

[0010] Construct a CSM diaphragm wall to replace the first waste soil in the geological body and obtain CSM waste;

[0011] DJM deep high-pressure jet mixing piles were constructed to replace the second waste soil in the geological body and obtain DJM waste material.

[0012] According to the preset ratio, the CSM waste, the DJM waste, and the common filler are added to the mixing tank;

[0013] The CSM waste, the DJM waste, and the common filler are mixed to form a waste-soil mixture;

[0014] According to the preset ratio, cement and water are added to the mixing tank and mixed to form the land reclamation solidification composition.

[0015] Optionally, in the above-mentioned method for preparing the land reclamation and solidification composition, before the step of adding cement and water to the mixing tank according to the preset ratio and mixing to form the land reclamation and solidification composition, the method further includes:

[0016] The cement is prepared using seawater and cement powder according to a preset water-cement ratio of 0.8:1.

[0017] Optionally, in the above-mentioned method for preparing the land reclamation and solidification composition, after the step of adding cement and water to the mixing tank according to the preset proportion and mixing to form the land reclamation and solidification composition, the method further includes:

[0018] Cover and maintain the reclamation solidification composition;

[0019] The land reclamation and solidification composition is crushed to form land reclamation soil particles; wherein the particle size of the land reclamation soil particles is D, and D≤100mm.

[0020] Optionally, in the above-mentioned method for preparing the land reclamation and solidification composition, before the step of adding the CSM waste, the DJM waste, and the common filler to the mixing tank according to a preset ratio, the method further includes:

[0021] Based on the first preset particle size distribution, the second preset particle size distribution, and the third preset particle size distribution, the first waste soil and the second waste soil are screened accordingly to obtain the first CSM waste soil, the first DJM waste soil, and the first common filler waste soil;

[0022] Based on the first preset liquid limit, the second preset liquid limit, and the third preset liquid limit, the first CSM waste soil, the first DJM waste soil, and the first common filler waste soil are screened accordingly to obtain the second CSM waste soil, the second DJM waste soil, and the second common filler waste soil.

[0023] Based on the first preset moisture content, the second preset moisture content, and the third preset moisture content, the second CSM waste soil, the second DJM waste soil, and the second common filler soil are screened accordingly to obtain the third CSM waste soil, the DJM waste, and the second common filler.

[0024] The third CSM waste soil is screened according to the preset plasticity index to obtain the CSM waste.

[0025] Optionally, in the above-mentioned method for preparing the land reclamation solidification composition, the first preset particle size distribution is 49%, the second preset particle size distribution is 51%, and the third preset particle size distribution is 20%.

[0026] Optionally, in the above-mentioned method for preparing the land reclamation solidification composition, the first preset liquid limit is 49%, the second preset liquid limit is 75%, and the third preset liquid limit is 28%.

[0027] Optionally, in the preparation method of the above-mentioned land reclamation solidification composition, the first preset moisture content is 53%, the second preset moisture content is 48%, and the third preset moisture content is 7.9%.

[0028] Optionally, in the preparation method of the above-mentioned land reclamation solidification composition, the preset plasticity index is 25%.

[0029] Optionally, in the preparation method of the above-mentioned reclamation solidification composition, the preset ratio of the CSM waste, the DJM waste, the common filler, the cement and the water is 7.5:7.5:7.5:1.5:1.1.

[0030] Secondly, the present invention provides a land reclamation solidification soil composition, prepared using the method described above for preparing land reclamation solidification compositions. The land reclamation solidification soil composition comprises, by weight, the following components: 30 parts CSM waste, 30 parts DJM waste, 30 parts common filler, 6 parts cement, and 6.4 parts water.

[0031] The above-described one or more technical solutions provided by this invention can have the following advantages or at least achieve the following technical effects:

[0032] This invention proposes a method for preparing a land reclamation solidification composition and a land reclamation solidification soil composition. By reusing the waste soil generated in the CSM and DJM construction methods, the waste materials in the CSM and DJM waste soils are used as raw materials for preparing the land reclamation solidification composition. This achieves the reuse of waste soil. Both construction methods are commonly used in construction, and the raw materials for preparing the land reclamation solidification composition are easy to obtain. There is no need to specially provide raw materials for the preparation of land reclamation materials, which saves soil resources and reduces the construction cost of land reclamation projects. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0034] Figure 1 This is a schematic diagram of the preparation method of the reclamation solidification composition of the present invention;

[0035] Figure 2 for Figure 1 A flowchart illustrating the process prior to step S60;

[0036] Figure 3 for Figure 1 A flowchart illustrating the process prior to step S40;

[0037] Figure 4 This is a schematic diagram of soil particle size distribution test curves for the first, second, and third preset particle size distributions involved in the present invention.

[0038] Figure 5 This is a schematic diagram of the test for determining the preset plasticity index according to the present invention.

[0039] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0041] It should be noted that in the embodiments of the present invention, all directional indications (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0042] In this invention, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element. Furthermore, the meaning of "and / or" throughout the text includes three parallel options; for example, "A and / or B" includes option A, option B, or options where both A and B are satisfied.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements.

[0044] In this invention, if there are descriptions involving "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0045] In this invention, the use of suffixes such as "module," "component," "part," "unit," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" can be used interchangeably.

[0046] For those skilled in the art, the specific meanings of the above terms in this invention can be understood according to the specific circumstances. Furthermore, the technical solutions of the various embodiments can be combined with each other; however, this is based on the premise that those skilled in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0047] The inventive concept of the present invention will be further explained below with reference to some specific embodiments.

[0048] This invention proposes a method for preparing a land reclamation solidification composition and a land reclamation solidification soil composition.

[0049] Reference Figure 1 , Figure 1 This is a schematic diagram of the preparation method of the land reclamation solidification composition of the present invention.

[0050] In one embodiment of the present invention, such as Figure 1 As shown, a method for preparing a land reclamation solidification composition includes the following steps:

[0051] Step S10: Provide a mixing tank; During the land-based CSM process, a 1.2-1.5 meter high earthen embankment will be constructed on the ground using fill material as a mixing tank to contain pure waste soil (including CSM waste soil, i.e., the first waste soil and DJM waste soil, i.e., the second waste soil).

[0052] Step S20: Construct CSM diaphragm walls to displace the first waste soil in the geological mass, obtaining CSM waste material; based on past experience and on-site measurements, it is estimated that each CSM panel installation will generate an average of 25m³ of waste material. 2 During the construction of the CSM diaphragm wall, the CSM waste in the first waste soil that was replaced was used as a component of the land reclamation and consolidation composition, so as to reuse the waste soil in the geological body replaced by the CSM method.

[0053] Step S30: Construct DJM deep high-pressure jet grouting piles to displace the second waste soil in the geological body and obtain DJM waste material. In the DJM method, a drilling rig is used to drill a grouting pipe with a nozzle into a predetermined design depth. Then, high-pressure equipment is used to jet compressed air and high-pressure water or grout through the nozzle to cut, disturb, and destroy the soil within a certain radius. During this process, the waste soil in the soil body, i.e., the second waste soil, will be displaced. The DJM waste material in the second waste soil is used as a component of the land reclamation and consolidation composition to reuse the waste soil in the geological body displaced in the DJM method.

[0054] Step S40: According to the preset ratio, add the CSM waste, the DJM waste, and the common packing material to the mixing tank;

[0055] Step S50: Mix the CSM waste, DJM waste, and common filler to form a waste soil mixture; first, unload the required amount of first waste soil, second waste soil, and common filler into the mixing tank, and use an excavator to thoroughly mix for about 30 minutes to make the soil uniform and improve the quality of the land reclamation and solidification composition.

[0056] Step S60: According to the preset ratio, add cement and water to the mixing tank and mix to form the land reclamation solidification composition. After adding the required amount of cement and water and mixing with the waste soil mixture for another 30 minutes, after the mixing is completed, cover the treated material with a waterproof cloth and solidify it in place for 7 days to obtain the land reclamation solidification composition.

[0057] It should be noted that CSM waste, by weight, comprises the following components: 10 parts crushed stone, 41 parts sand, 35 parts silt, and 24 parts clay; DJM waste, by weight, comprises the following components: 25 parts crushed stone, 25 parts sand, 46 parts silt, and 4 parts clay; and common filler, by weight, comprises the following components: 24 parts crushed stone, 56 parts sand, 19 parts silt, and 1 part clay.

[0058] The technical solution of this invention reuses the waste soil generated in the CSM and DJM construction methods, using the waste materials from both methods as raw materials for preparing the land reclamation and solidification composition. This achieves the reuse of waste soil, and since both methods are commonly used in construction, the raw materials for preparing the land reclamation and solidification composition are readily available, eliminating the need to specially provide raw materials for land reclamation materials. This saves soil resources and reduces the construction cost of land reclamation projects.

[0059] Furthermore, before the step of adding cement and water to the mixing tank according to the preset ratio and mixing to form the land reclamation solidification composition, the method further includes:

[0060] Step R10: Prepare the cement using seawater and cement powder according to the preset water-cement ratio; wherein the preset water-cement ratio is 0.8:1.

[0061] It should be noted that the cement is CEM Type I ordinary Portland cement with a strength grade of 52.5N; the water is seawater.

[0062] It should be understood that, in order to make the cement and waste soil mixture more uniform and to prevent the generation of a large amount of dust and environmental pollution caused by mixing the waste soil mixture and cement powder after adding cement powder to the mixing tank, the cement is prepared into cement slurry before mixing the waste soil mixture and cement.

[0063] In addition, in order to make the cement slurry have better fluidity, make it easier to mix the cement slurry with the waste soil mixture, reduce the mixing difficulty, and improve the molding quality of the land reclamation solidification composition, the water-cement ratio is limited to 0.8:1.

[0064] In addition, when constructing near the sea, in order to save construction costs, reduce the consumption of freshwater resources, and conserve freshwater resources, seawater and cement powder can be used to prepare cement slurry.

[0065] Continue to refer to Figure 1 and refer to Figure 2 , Figure 2 for Figure 1 A flowchart illustrating the process before step S60.

[0066] Furthermore, such as Figure 1 and Figure 2 As shown, after the step of adding cement and water to the mixing tank according to the preset ratio and mixing to form the land reclamation solidification composition, the method further includes:

[0067] Step T10: Cover and cure the reclamation solidification composition;

[0068] Step T20: Crush the land reclamation solidification composition to form land reclamation soil particles; wherein the particle size of the land reclamation soil particles is D, and D≤100mm.

[0069] It should be noted that, in order to facilitate the transfer and utilization of the land reclamation solidification composition, the land reclamation solidification composition that has been solidified on-site for 7 days is crushed into land reclamation soil particles with a particle size of less than or equal to 100mm (according to public reclamation specifications) using an excavator.

[0070] Continue to refer to Figure 1 and refer to Figure 3 , Figure 4 and Figure 5 , Figure 3 for Figure 1 A flowchart illustrating the process prior to step S40. Figure 4 The present invention relates to experimental curves of soil particle size distribution for the first, second, and third preset particle size distributions. Figure 5 This is a schematic diagram of the test for determining the preset plasticity index according to the present invention.

[0071] Furthermore, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, before the step of adding the CSM waste, the DJM waste, and the common packing material to the mixing tank according to the preset ratio, the method further includes:

[0072] Step F10: Based on the first preset particle size distribution (first PSD), the second preset particle size distribution (second PSD), and the third preset particle size distribution (third PSD), the first waste soil and the second waste soil are screened accordingly to obtain the first CSM waste soil, the first DJM waste soil, and the first common filler waste soil; PSD refers to a list of values ​​of powder dispersed in a fluid or a mathematical function, also known as particle size distribution, which is defined as the relative quantity between particle size and particle mass;

[0073] Step F20: Based on the first preset liquid limit, the second preset liquid limit, and the third preset liquid limit, the first CSM waste soil, the first DJM waste soil, and the first common filler waste soil are screened accordingly to obtain the second CSM waste soil, the second DJM waste soil, and the second common filler waste soil.

[0074] Step F30: Based on the first preset moisture content, the second preset moisture content, and the third preset moisture content, the second CSM waste soil, the second DJM waste soil, and the second common filler soil are screened accordingly to obtain the third CSM waste soil, the DJM waste, and the second common filler.

[0075] Step F40: Based on the preset plasticity index, screen the third CSM waste soil to obtain the CSM waste.

[0076] It should be noted that samples of the landfill soil particles crushed to a diameter of less than or equal to 100 mm were taken and tested in the laboratory to obtain the first preset particle size distribution, the second preset particle size distribution, the third preset particle size distribution, the first preset liquid limit, the second preset liquid limit, the third preset liquid limit, the first preset moisture content, the second preset moisture content, the third preset moisture content, and the preset plasticity index.

[0077] To ensure that the relative compaction degree of the crushed marine soil composition is greater than or equal to 95% when it is compacted again during land reclamation, i.e., it can be compacted to more than 95% of the maximum dry density, and to verify the feasibility of using roller compaction such as a road roller for the compaction process, a certain number of crushed marine soil particles with a particle size of less than or equal to 100 mm were compacted using vibratory compaction (VCR) to form a test panel of 10m*10m*0.3m.

[0078] Specifically, the operating weight of the vibratory roller is 11490kg, the maximum compaction layer depth (before compaction) is 300mm, and the first two compaction processes are static compressions. The roller's forming speed during compaction is 4km / h. During compaction, the optimum moisture content of the test panel is ±3% of the moisture content of the test panel before compaction.

[0079] Therefore, in order to ensure that the actual use effect of the reclamation soil particles can meet the reclamation requirements, relevant tests such as PSD test, Atterberg limit test, moisture content test, Atterberg limit test, Proctor test, compressive strength test, relative compaction and maximum value test, and one-dimensional consolidation test can be conducted on the first waste soil, the second waste soil, and the common fill material to determine the first preset particle size distribution, the second preset particle size distribution, the third preset particle size distribution, the first preset liquid limit, the second preset liquid limit, the third preset liquid limit, the first preset moisture content, the second preset moisture content, the third preset moisture content, and the preset plasticity index required for screening CSM waste, DJM waste, and common fill material from the first waste soil and the second waste soil.

[0080] Furthermore, to ensure the ratio between the mass and particle size of the crushed land reclamation solidification composition and to ensure the quality of land reclamation construction, the first preset particle size distribution is 49%, the second preset particle size distribution is 51%, and the third preset particle size distribution is 20%.

[0081] Furthermore, to ensure the bonding force between adjacent reclamation soil particles during reclamation construction, the first preset liquid limit is 49%, the second preset liquid limit is 75%, and the third preset liquid limit is 28%.

[0082] Furthermore, to prevent excessive friction between adjacent reclamation soil particles or saturation due to water filling all the pores between the reclamation soil particles, which would make them difficult to compact during construction, the first preset moisture content is 53%, the second preset moisture content is 48%, and the third preset moisture content is 7.9%.

[0083] Furthermore, to ensure the plasticity of the reclaimed soil particles in order to meet the construction needs of different sizes or different environments, the preset plasticity index is 25%.

[0084] Furthermore, to ensure that this land reclamation solidification composition has good adaptability, such as being compacted by a road roller in the prior art, the preset ratio of the CSM waste, the DJM waste, the common filler, the cement, and the water is 7.5:7.5:7.5:1.5:1.1.

[0085] Furthermore, based on the same inventive concept, this invention also proposes a composition for reclamation and soil stabilization.

[0086] In this embodiment, the reclamation solidification soil composition is prepared by the method described above for preparing reclamation solidification composition. The reclamation solidification soil composition comprises the following components by mass parts: 30 parts CSM waste, 30 parts DJM waste, 30 parts common filler, 6 parts cement and 6.4 parts water.

[0087] The specific structure of the preparation method of the reclamation and solidification composition is as described in the above embodiments. Since the reclamation and solidification soil composition adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0088] It should be noted that the sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above embodiments are only optional embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made under the inventive concept of the present invention using the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are all included within the patent protection scope of the present invention.

Claims

1. A method of preparing a reclamation solidification composition, characterized by, The method comprises: providing a mixing pool; constructing a CSM diaphragm wall, replacing first waste soil in a geological body to obtain CSM waste material; constructing a DJM deep high-pressure jetting mixing pile, replacing second waste soil in the geological body to obtain DJM waste material; screening the first waste soil and the second waste soil according to a first preset particle size distribution, a second preset particle size distribution and a third preset particle size distribution to obtain first CSM waste soil, first DJM waste soil and first common filler waste soil; the first preset particle size distribution is 49%, the second preset particle size distribution is 51%, and the third preset particle size distribution is 20%; screening the first CSM waste soil, the first DJM waste soil and the first common filler waste soil according to a first preset liquid limit, a second preset liquid limit and a third preset liquid limit to obtain second CSM waste soil, second DJM waste soil and second common filler waste soil; the first preset liquid limit is 49%, the second preset liquid limit is 75%, and the third preset liquid limit is 28%; screening the second CSM waste soil, the second DJM waste soil and the second common filler waste soil according to a first preset water content, a second preset water content and a third preset water content to obtain third CSM waste soil, the DJM waste material and the second common filler; the first preset water content is 53%, the second preset water content is 48%, and the third preset water content is 7.9%; screening the third CSM waste soil according to a preset plasticity index to obtain the CSM waste material; the preset plasticity index is 25%; adding the CSM waste material including the following components: 10 parts of crushed stone, 41 parts of sand, 35 parts of silt, 24 parts of clay, the DJM waste material including the following components: 25 parts of crushed stone, 25 parts of sand, 46 parts of silt, 4 parts of clay, and the second common filler including the following components: 24 parts of crushed stone, 56 parts of sand, 19 parts of silt and 1 part of clay into the mixing pool; mixing the CSM waste material, the DJM waste material and the second common filler to form a waste soil mixture; adding cement and water into the mixing pool according to a preset proportion and mixing to form the reclamation solidification composition.

2. The method of preparing a reclamation solidification composition according to claim 1, wherein Before the step of adding cement and water into the mixing pool according to the preset proportion and mixing to form the reclamation solidification composition, the method further comprises: preparing the cement by using seawater and cement powder according to a preset water-cement ratio; wherein the preset water-cement ratio is 0.8:

1.

3. The method of preparing a reclamation solidification composition according to claim 2, wherein After the step of adding cement and water into the mixing pool according to the preset proportion and mixing to form the reclamation solidification composition, the method further comprises: covering and curing the reclamation solidification composition; crushing the reclamation solidification composition to form reclamation soil particles; wherein the particle size of the reclamation soil particles is D, and D≤100 mm.

4. The method of preparing a reclamation solidification composition according to any one of claims 1 to 3, wherein The preset proportion of the CSM waste material, the DJM waste material, the second common filler, the cement and the water is 7.5:7.5:7.5:1.5:1.1.

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