Solid waste-based phosphate grouting reinforcement material and preparation method and application thereof

Abstract

The present application belongs to the field of tunnel and underground engineering disaster prevention, and relates to a tunnel and underground grouting reinforcement material, in particular to a solid waste-based phosphate grouting reinforcement material and a preparation method and application thereof.In component A, 20-50 parts of red mud, 10-40 parts of magnesium compound, 10-30 parts of mineral admixture, 0.5-1.5 parts of high-temperature-resistant agent, 0.5-3 parts of retarder, 0.2-0.5 parts of water reducing agent, 0.2-1.2 parts of acid-base buffer, 1-6 parts of stabilizer and 0.5-1 part of surfactant are used; in component B, 30-60 parts of phosphate and 0.3-1.5 parts of defoaming agent are used.The solid waste-based phosphate grouting reinforcement material prepared by the solid waste-based phosphate grouting reinforcement material provided by the present application has good self-flowability of slurry after being mixed with water, good high-temperature resistance, high slurry retention rate and high stone rate, thereby solving the grouting problem in a high-temperature and high-pressure stratum under a severe water environment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of tunnel and underground engineering disaster prevention, and relates to a tunnel and underground grouting reinforcement material, in particular to a solid waste-based phosphate grouting reinforcement material and a preparation method and application thereof. BACKGROUND

[0002] The information disclosed in this Background section is only for the purpose of increasing an understanding of the general background of the present application and should not be taken as an acknowledgement or any form of suggestion that this information forms the general prior art before the application.

[0003] With the deepening development of the transportation network to the areas with high mountains and steep ridges, hundreds of tunnels with a burial depth of thousands of meters and a length of tens of kilometers have appeared, and have the characteristics of large burial depth, high ground temperature, high stress, high water pressure, complex structure, and frequent disasters. Some tunnels are about 1000 km long, and the maximum burial depth exceeds 2000 m. During the construction process, the extreme adverse geological conditions such as deep and large fault structures, water-rich soft strata, and high ground temperature (40-80℃) are easily induced to cause major geological disasters such as water and mud inrush, collapse, etc., which seriously threaten the safety of tunnel construction and the surrounding ecological environment, and the traditional prevention and control methods and treatment technologies are difficult to effectively cope with.

[0004] The commonly used grouting reinforcement materials at present mainly use cement, cement-silicate double liquid materials, etc. However, the inventors have found that the existing grouting materials are prone to cracking in a high-temperature environment, have low plugging efficiency, poor rheological properties, and fast strength degradation. For example, the cement-silicate double grout liquid has a short gelation time in a high-temperature environment, which easily causes hole plugging, and the grout liquid after gelation is in the form of jelly or bean curd residue. The mechanical properties of ordinary cement grout are good at a higher temperature, but the grout has a large water separation rate and a long gelation time, and has low plugging efficiency. In addition, with the increasing environmental protection awareness of the society, the problems of non-renewable, high energy consumption, high carbon emission, and high cost of the raw materials for preparing cement are gradually highlighted, which does not meet the green and sustainable development. SUMMARY

[0005] In order to solve the problems of the prior art, the present application provides a solid waste-based phosphate grouting reinforcement material and a preparation method and application thereof. The solid waste-based phosphate grouting reinforcement material provided by the present application not only has the properties of high-temperature resistance, fast gelation, and high strength, but also realizes the large-volume and high-additive utilization of solid waste, does not use traditional cement, reduces the amount of cement, is green and environmentally friendly, has a simple preparation process, and is low in cost, so it is suitable for popularization and application in the society.

[0006] In order to achieve the above-mentioned purposes, the technical scheme of the present application is as follows:

[0007] On the one hand, a solid waste-based phosphate grouting reinforcement material comprises component A, component B, and component C.

[0008] Component A is composed of the following raw materials by weight: 20-50 parts of red mud, 10-40 parts of magnesium compound, 10-30 parts of mineral admixture, 0.5-1.5 parts of high-temperature-resistant agent, 0.5-3 parts of retarder, 0.2-0.5 parts of water-reducing agent, 0.2-1.2 parts of acid-base buffer, 1-6 parts of stabilizer, and 0.5-1 part of surfactant;

[0009] Component B is composed of the following raw materials by weight: 30-60 parts of phosphate and 0.3-1.5 parts of defoaming agent;

[0010] Component C includes 60-80 parts of water by weight;

[0011] The mass ratio of Component A, Component B and Component C is 1:0.9-1.1:0.9-1.1;

[0012] The high-temperature-resistant agent is one or any combination of aluminum hydroxide powder, polyethyleneimine and lignin sulfonate.

[0013] The mineral admixture is one or any combination of aluminum oxide, silica fume, metakaolin, fly ash, slag and steel slag.

[0014] In another aspect, a preparation method of the solid waste-based phosphate grouting reinforcement material is provided, which includes the following steps:

[0015] The red mud, magnesium compound, mineral admixture, high-temperature-resistant agent, retarder, water-reducing agent, acid-base buffer, stabilizer and surfactant are mixed according to the proportion to obtain Component A;

[0016] The phosphate and defoaming agent are mixed and stirred according to the proportion to obtain Component B;

[0017] Components A, B and C are mixed and stirred to obtain the solid waste-based phosphate grouting reinforcement material.

[0018] In a third aspect, the solid waste-based phosphate grouting reinforcement material is applied to high-temperature and high-pressure stratum grouting and water plugging.

[0019] The present application has the following advantages:

[0020] (1) The solid waste-based phosphate grouting reinforcement material provided by the present application uses red mud rich in metal oxides to partially replace heavy-burned oxides to form a solid waste-based phosphate grouting reinforcement material, realizing the high-addition utilization of large amounts of solid waste. At the same time, the solid waste-based phosphate grouting reinforcement material provided by the present application is a phosphate cementing material, which is suitable for high-temperature environments by itself compared with cement-based grouting materials. However, ordinary phosphate cementing materials have poor water resistance in flowing water environments and have too fast setting time, which makes them difficult to pump, especially the phosphate cementing material of the present application, which partially replaces heavy-burned oxides with red mud, has even poorer pumping performance and reduced high-temperature resistance. Therefore, the solid waste-based mineral admixture and high-temperature resistant agent are added to the solid waste-based phosphate grouting reinforcement material system of the present application to improve the high-temperature setting time and high-temperature water resistance of the phosphate cementing material, greatly improving the applicability of the material in high-temperature and high-pressure strata in flowing water environments.

[0021] (2) The solid waste-based phosphate grouting reinforcement material prepared by the present application has wide raw material sources, low cost, high temperature resistance, controllable setting time, simple operation, and is suitable for promotion.

[0022] (3) The preparation method of the present application is simple and practical, has wide applicability, and can be applied to grouting engineering in high-temperature and severe water environments, solving the problems of poor high-temperature resistance and durability of traditional grouting materials. DETAILED DESCRIPTION

[0023] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0024] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations, devices, components and / or combinations thereof.

[0025] In view of the poor high-temperature resistance of existing cement-based grouting materials, which makes them difficult to be applied to high-temperature and high-pressure strata, and the fact that cement production is not renewable in resources, the present application proposes a solid waste-based phosphate grouting reinforcement material and its preparation method and application.

[0026] A typical embodiment of the present application provides a solid waste-based phosphate grouting reinforcement material, which comprises component A, component B and component C.

[0027] Component A is composed of the following raw materials by weight: 20-50 parts of red mud, 10-40 parts of magnesium compound, 10-30 parts of mineral admixture, 0.5-1.5 parts of high-temperature resistant agent, 0.5-3 parts of retarder, 0.2-0.5 parts of water reducing agent, 0.2-1.2 parts of acid-base buffer, 1-6 parts of stabilizer, and 0.5-1 parts of surfactant;

[0028] Component B is composed of the following raw materials by weight: 30-60 parts of phosphate, and 0.3-1.5 parts of defoaming agent;

[0029] Component C includes 60-80 parts of water by weight;

[0030] The mass ratio of Component A, Component B and Component C is 1:0.9-1.1:0.9-1.1;

[0031] The high-temperature resistant agent is one or any combination of aluminum hydroxide powder, polyethyleneimine, and lignin sulfonate.

[0032] The mineral admixture is one or any combination of aluminum oxide, silica fume, metakaolin, fly ash, slag, and steel slag.

[0033] In some embodiments, Component A includes 20-40 parts of red mud, 20-40 parts of magnesium compound, 15-25 parts of mineral admixture, 1.0-1.5 parts of high-temperature resistant agent, 0.5-1 part of retarder, 0.4-0.5 part of water reducing agent, 0.2-0.7 part of acid-base buffer, 2-4 parts of stabilizer, and 0.5-0.7 part of surfactant.

[0034] In some embodiments, Component A includes 20-40 parts of red mud, 20-40 parts of magnesium compound, 18-22 parts of mineral admixture, 1.3-1.5 parts of high-temperature resistant agent, 0.5-0.7 part of retarder, 0.4-0.5 part of water reducing agent, 0.4-0.6 part of acid-base buffer, 2-4 parts of stabilizer, and 0.5-0.6 part of surfactant.

[0035] In some embodiments, Component B includes 30-50 parts of phosphate, and 0.3-1.0 part of defoaming agent.

[0036] In some embodiments, Component B includes 30-40 parts of phosphate, and 0.3-0.7 part of defoaming agent.

[0037] The red mud described in the present application is a polluting waste residue discharged during the extraction of aluminum oxide in the aluminum production industry, and is one or any combination of sintered red mud, Bayer red mud, and combined red mud, with a particle diameter of 0.088-0.25 mm, a specific gravity of 2.7-2.9 g, and a bulk density of 0.8-1.0 g / cm 3 , and a pH value of 10.29-11.83.

[0038] In some embodiments, the magnesium compound is one or more of dead-burned magnesium oxide, magnesium phosphate, magnesium sulfate, magnesium hydroxide, magnesium carbonate. Preferably, the magnesium compound is dead-burned magnesium oxide.

[0039] In some embodiments, the mineral admixture is metakaolin.

[0040] In some embodiments, the high-temperature resistant agent is aluminum hydroxide powder.

[0041] In some embodiments, the retarder is one or more of sodium pyrophosphate, borax, boric acid, sodium fluorosilicate, sodium polyphosphate, urea, hexadecylamine, triethanolamine, diethanolamine, borate ester. Preferably, the retarder is boric acid.

[0042] In some embodiments, the water-reducing agent is one or more of lignin-based water-reducing agent, naphthalene sulfonate-based water-reducing agent, water-soluble resin water-reducing agent, polycarboxylic acid-based water-reducing agent. Preferably, the water-reducing agent is polycarboxylic acid-based water-reducing agent.

[0043] In some embodiments, the acid-base buffer is one or more of phosphoric acid, citric acid, carbonic acid, acetic acid, malic acid, magnesium carbonate, magnesium bicarbonate, magnesium hydroxide, sodium hydroxide, potassium hydroxide. Preferably, the acid-base buffer is citric acid.

[0044] In some embodiments, the stabilizer is one or more of polyacrylate emulsion, styrene-acrylate emulsion, styrene-butadiene emulsion, hydroxymethyl cellulose, urea-formaldehyde resin, n-alkyl cetyl alcohol, starch ether, cellulose ether, and xanthan gum. Preferably, the stabilizer is polyacrylate emulsion.

[0045] In some embodiments, the surfactant is one or more of sodium salt of wood resin (neutralized oxidized rosin resin), sodium salt of alkyl aryl sulfonic acid with C 12 alkyl group, sodium lignosulfonate, alkyl polyoxyethylene ether, benzyl phenol polyoxyethylene ether, and alkyl sulfonate. Preferably, the surfactant is sodium salt of wood resin (neutralized oxidized rosin resin).

[0046] In some embodiments, the phosphate is one or more of ammonium dihydrogen phosphate, diammonium hydrogen phosphate, calcium hydrogen phosphate, calcium dihydrogen phosphate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate, disodium hydrogen phosphate, and sodium dihydrogen phosphate. Preferably, the phosphate is potassium dihydrogen phosphate.

[0047] In some embodiments, the defoaming agent is one or more of mineral oil-based defoaming agent, alcohol-based defoaming agent, fatty acid and fatty acid ester-based defoaming agent, amide-based defoaming agent, phosphate ester-based defoaming agent, silicone-based defoaming agent, polyether-based defoaming agent, polyether-modified polysiloxane-based defoaming agent. Preferably, the defoaming agent is phosphate ester-based defoaming agent.

[0048] In some embodiments, the water in component C is waste water. The waste water is water that cannot be recycled after a certain technical treatment or cannot be treated to a certain standard after primary pollution, including domestic sewage, industrial waste water and other useless water such as initial rain runoff into drainage channels.

[0049] In some embodiments, components A, B and C are compounded according to a water-cement ratio of 0.6-0.8.

[0050] In another embodiment of the present application, a preparation method of the above-mentioned solid waste-based phosphate grouting reinforcement material is provided, comprising the following steps:

[0051] The red mud, magnesium compound, mineral admixture, high-temperature-resistant agent, retarder, water reducing agent, acid-base buffer, stabilizer and surfactant are mixed according to the proportions to obtain component A;

[0052] The phosphate and defoaming agent are mixed and stirred according to the proportions to obtain component B;

[0053] Components A, B and C are mixed and stirred to obtain the solid waste-based phosphate grouting reinforcement material.

[0054] In a third embodiment of the present application, the above-mentioned solid waste-based phosphate grouting reinforcement material is applied to high-temperature and high-pressure stratum grouting and water plugging.

[0055] In order to enable those skilled in the art to more clearly understand the technical solutions of the present application, the technical solutions of the present application will be described in detail below in combination with specific examples and comparative examples.

[0056] Example 1:

[0057] A solid waste-based phosphate grouting reinforcement material is prepared from components A, B and C; wherein component A is composed of the following raw materials in parts by weight: 20 parts of red mud, 40 parts of magnesium compound, 20 parts of mineral admixture, 1.5 parts of high-temperature-resistant agent, 0.5 parts of retarder, 0.5 parts of water reducing agent, 0.5 parts of acid-base buffer, 3 parts of stabilizer and 0.5 parts of surfactant; and component B is composed of the following raw materials in parts by weight: 35 parts of phosphate and 0.5 parts of defoaming agent.

[0058] The red mud is Bayer red mud.

[0059] The magnesium compound is heavy-burned magnesium oxide.

[0060] The mineral admixture is metakaolin.

[0061] The high-temperature-resistant agent is aluminum hydroxide powder.

[0062] The retarder is boric acid.

[0063] The water reducing agent is a polycarboxylic acid type water reducing agent.

[0064] The acid-base buffer is citric acid.

[0065] The stabilizer is a polyacrylate emulsion.

[0066] The surfactant is sodium salt of wood resin (neutral oxidized rosin resin).

[0067] The phosphate is potassium dihydrogen phosphate.

[0068] The defoaming agent is a phosphate ester defoaming agent.

[0069] The wastewater is domestic sewage.

[0070] A preparation method thereof, comprising the following steps:

[0071] 1. Red mud, magnesium compound, mineral admixture, high-temperature-resistant agent, retarder, water-reducing agent, acid-base buffer, stabilizer, and surfactant are mixed and stirred uniformly in proportion to obtain component A; phosphate and defoaming agent are mixed and stirred uniformly in proportion to obtain component B; component C is composed of wastewater;

[0072] 2. Component A, component B, and component C are mixed and stirred uniformly in proportion to obtain a solid-waste-based phosphate grouting reinforcement material with high-temperature resistance, rapid setting, and high strength, and the corresponding performance is tested.

[0073] Example 2:

[0074] A solid-waste-based phosphate grouting reinforcement material is prepared from component A, component B, and component C; wherein component A is composed of the following raw materials in parts by weight: red mud 30 parts, magnesium compound 30 parts, mineral admixture 20 parts, high-temperature-resistant agent 1.5 parts, retarder 0.5 parts, water-reducing agent 0.5 parts, acid-base buffer 0.5 parts, stabilizer 3 parts, and surfactant 0.5 parts; component B is composed of the following raw materials in parts by weight: phosphate 35 parts and defoaming agent 0.5 parts.

[0075] The red mud is Bayer red mud.

[0076] The magnesium compound is heavy-burning magnesium oxide.

[0077] The mineral admixture is metakaolin.

[0078] The high-temperature-resistant agent is aluminum hydroxide powder.

[0079] The retarder is boric acid.

[0080] The water-reducing agent is a polycarboxylic acid type water-reducing agent.

[0081] The acid-base buffer is citric acid.

[0082] The stabilizer is a polyacrylate emulsion.

[0083] The surfactant is sodium salt of wood resin (neutral oxidized rosin resin).

[0084] The phosphate is potassium dihydrogen phosphate.

[0085] The defoaming agent is phosphate ester defoaming agent.

[0086] The wastewater is domestic sewage.

[0087] A preparation method thereof, comprising the following steps:

[0088] 1. Red mud, magnesium compound, mineral admixture, high-temperature-resistant agent, retarder, water-reducing agent, acid-base buffer, stabilizer, surfactant are mixed and stirred uniformly according to the proportion to obtain component A; phosphate, defoaming agent are mixed and stirred uniformly according to the proportion to obtain component B; component C is composed of wastewater;

[0089] 2. Component A, component B and component C are mixed and stirred uniformly according to the water-cement ratio of 0.6 to obtain a solid waste-based phosphate grouting reinforcement material with high-temperature resistance, rapid setting and high strength, and the corresponding performance is tested.

[0090] Example 3:

[0091] A solid waste-based phosphate grouting reinforcement material is prepared from component A, component B and component C; wherein component A is composed of the following raw materials in parts by weight: red mud 40 parts, magnesium compound 20 parts, mineral admixture 20 parts, high-temperature-resistant agent 1.5 parts, retarder 0.5 parts, water-reducing agent 0.5 parts, acid-base buffer 0.5 parts, stabilizer 3 parts, surfactant 0.5 parts; component B is composed of the following raw materials in parts by weight: phosphate 35 parts, defoaming agent 0.5 parts.

[0092] The red mud is Bayer red mud.

[0093] The magnesium compound is heavy-burning magnesium oxide.

[0094] The mineral admixture is metakaolin.

[0095] The high-temperature-resistant agent is aluminum hydroxide powder.

[0096] The retarder is boric acid.

[0097] The water-reducing agent is polycarboxylic acid type water-reducing agent.

[0098] The acid-base buffer is citric acid.

[0099] The stabilizer is polyacrylic emulsion.

[0100] The surfactant is sodium salt of wood resin (neutral oxidized rosin resin).

[0101] The phosphate is potassium dihydrogen phosphate.

[0102] The defoaming agent is a phosphate ester defoaming agent.

[0103] The wastewater is domestic sewage.

[0104] A preparation method thereof, comprising the following steps:

[0105] 1. Red mud, magnesium compound, mineral admixture, high-temperature resistant agent, retarder, water reducing agent, acid-base buffer, stabilizer, and surfactant are mixed and stirred uniformly according to proportions to obtain component A; a phosphate and a defoaming agent are mixed and stirred uniformly according to proportions to obtain component B; component C is composed of wastewater;

[0106] 2. Components A, B, and C are mixed and stirred uniformly according to a water-cement ratio of 0.6 to obtain a solid-waste-based phosphate grouting reinforcement material with high-temperature resistance, rapid setting, and high strength, and corresponding properties are tested.

[0107] Comparative Example 1

[0108] The difference from Example 1 is that the solid-waste-based phosphate grouting reinforcement material is replaced by a cement slurry, the water-cement ratio is 0.6, and the corresponding properties of the grouting reinforcement material prepared in the example are tested.

[0109] Comparative Example 2

[0110] The difference from Example 1 is that the solid-waste-based phosphate grouting reinforcement material is replaced by a cement-silicate grout, the water-cement ratio of the cement slurry is 0.6, and the volume ratio of the cement-silicate grout is 3, and the corresponding properties of the grouting reinforcement material prepared in the example are tested.

[0111] Performance indicators

[0112] The solid-waste-based phosphate grouting reinforcement material obtained in the example is applied to high-temperature and high-pressure formation dynamic water plugging, and the grouting reinforcement effect evaluation test is performed, and the performance test steps / calculations are as follows:

[0113] The slurry retention rate calculation formula is as follows: retention rate (%) = m1 / m0 x 100%, wherein m1 is the mass of the solid-waste-based phosphate grouting reinforcement material stone after flushing; m0 is the initial mass of the solid-waste-based phosphate grouting reinforcement material stone. The water bleeding rate, compressive strength, and setting time of the solid-waste-based phosphate grouting reinforcement material are tested according to the standards “Cement Water Bleeding Test Method” (JC / T 2153-2012), “Cement Mortar Strength Test Method (ISO Method)” (GB / T 17671-2021), and “Cement Standard Consistency Water Consumption, Setting Time, and Stability Test Method” (GB / T 1346-2011), and the results are shown in Table 1.

[0114] Table 1 Grouting material performance evaluation of examples and comparative examples

[0115]

[0116]

[0117] From Table 1, in terms of dynamic water plugging effect, the slurry retention rate of Examples 1-3 is ≥85%, and the dynamic water anti-dispersion performance is good; in terms of slurry stability, the slurry bleeding rate of Examples 1-3 at 40℃ and 80℃ is much lower than that of Comparative Examples 1-2, and the water retention performance is good; in terms of mechanical properties, the compressive strength of stone body of Examples 1-3 at 40℃ and 80℃ is much higher than that of Comparative Examples 1-2, indicating that the solid waste-based phosphate grouting reinforcement material has excellent mechanical properties at high temperature environment, and has good high temperature resistance; it can be seen that the solid waste-based phosphate grouting reinforcement material in Examples 1-3 has the characteristics of high temperature resistance, fast setting and high strength, and realizes the high volume and high additional utilization of difficult-to-utilize metallurgical slag such as red mud, and is green and environmentally friendly.

[0118] The preferred embodiments of the present application have been described above, but the present application is not limited to the above. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A solid waste-based phosphate grouting reinforcement material for use in high-temperature and high-pressure stratum grouting water plugging, characterized in that, The component A, the component B and the component C are mixed to form the cementing material. The component A is composed of the following raw materials by weight: 20-50 parts of red mud, 10-40 parts of magnesium compound, 10-30 parts of mineral admixture, 0.5-1.5 parts of high-temperature resistant agent, 0.5-3 parts of retarder, 0.2-0.5 parts of water reducing agent, 0.2-1.2 parts of acid-base buffer, 1-6 parts of stabilizer, and 0.5-1 parts of surfactant. The component B is composed of the following raw materials by weight: 30-60 parts of phosphate and 0.3-1.5 parts of defoaming agent. The component C is composed of 60-80 parts of water by weight. The mass ratio of the component A, the component B and the component C is 1:0.9-1.1:0.9-1.

1. The high-temperature resistant agent is one or more of aluminum hydroxide powder, polyethylene imine and lignin sulfonate. The mineral admixture is one or more of alumina, silica fume, metakaolin, fly ash, slag and steel slag. The red mud is one or any combination of sintering red mud, Bayer red mud, combined red mud, with particle diameter of 0.088-0.25mm, specific gravity of 2.7-2.9, and bulk density of 0.8-1.0g / cm 3 , and pH value of 10.29-11.

83.

2. The solid waste-based phosphate grouting reinforcement material for high-temperature and high-pressure stratum grouting and water plugging according to claim 1, characterized in that, In the component A, the red mud is 20-40 parts, the magnesium compound is 20-40 parts, the mineral admixture is 15-25 parts, the high-temperature resistant agent is 1.0-1.5 parts, the retarder is 0.5-1 part, the water reducing agent is 0.4-0.5 part, the acid-base buffer is 0.2-0.7 part, the stabilizer is 2-4 parts, and the surfactant is 0.5-0.7 part.

3. The solid waste-based phosphate grouting reinforcement material for high-temperature and high-pressure stratum grouting and water plugging according to claim 2, characterized in that, In the component A, the red mud is 20-40 parts, the magnesium compound is 20-40 parts, the mineral admixture is 18-22 parts, the high-temperature resistant agent is 1.3-1.5 parts, the retarder is 0.5-0.7 part, the water reducing agent is 0.4-0.5 part, the acid-base buffer is 0.4-0.6 part, the stabilizer is 2-4 parts, and the surfactant is 0.5-0.6 part.

4. The solid waste-based phosphate grouting reinforcement material for high-temperature and high-pressure stratum grouting and water plugging according to claim 1, characterized in that, In the component B, the phosphate is 30-50 parts, and the defoaming agent is 0.3-1.0 part.

5. The solid waste-based phosphate grouting reinforcement material for high-temperature and high-pressure stratum grouting and water plugging according to claim 4, characterized in that, In the component B, the phosphate is 30-40 parts, and the defoaming agent is 0.3-0.7 part.

6. The solid waste-based phosphate grouting reinforcement material for high-temperature and high-pressure stratum grouting and water plugging according to claim 1, characterized in that, The magnesium compound is one or more of heavy-burned magnesium oxide, magnesium phosphate, magnesium sulfate, magnesium hydroxide and magnesium carbonate.

7. The solid waste-based phosphate grouting reinforcement material for high-temperature and high-pressure stratum grouting and water plugging according to claim 1, characterized in that, The mineral admixture is metakaolin. Or, the high-temperature resistant agent is aluminum hydroxide powder.

8. The solid waste-based phosphate grouting reinforcement material for high-temperature and high-pressure stratum grouting and water plugging according to claim 1, characterized in that, The retarder is one or more of sodium pyrophosphate, borax, boric acid, sodium fluorosilicate, sodium polyphosphate, urea, hexadecylamine, triethanolamine, diethanolamine and boric acid ester. Or, the water reducing agent is one or more of lignin-based water reducing agent, naphthalene sulfonate-based water reducing agent, water-soluble resin water reducing agent and polycarboxylic acid-based water reducing agent. Or, the acid-base buffer is one or more of phosphoric acid, citric acid, carbonic acid, acetic acid, malic acid, magnesium carbonate, magnesium bicarbonate, magnesium hydroxide, sodium hydroxide and potassium hydroxide. Or, the stabilizer is one or more of polyacrylic acid emulsion, styrene-acrylic emulsion, styrene-butadiene emulsion, hydroxymethyl cellulose, urea-formaldehyde resin, n-alkyl cetyl alcohol, starch ether, cellulose ether and xanthan gum. or the surfactant is one or several of sodium salt of wood resin, sodium salt of alkyl aryl sulfonic acid having C 12 alkyl polyoxyethylene ether, benzyl phenol polyoxyethylene ether, and alkyl sulfonic acid salt; Or, the phosphate is one or more of ammonium dihydrogen phosphate, diammonium hydrogen phosphate, calcium hydrogen phosphate, calcium dihydrogen phosphate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate, disodium hydrogen phosphate and sodium dihydrogen phosphate. Or, the defoaming agent is one or more of mineral oil defoaming agent, alcohol defoaming agent, fatty acid and fatty acid ester defoaming agent, amide defoaming agent, phosphate ester defoaming agent, silicone defoaming agent, polyether defoaming agent, and polyether modified polysiloxane defoaming agent.

9. The solid waste-based phosphate grouting reinforcement material for high-temperature and high-pressure stratum grouting and water plugging according to claim 1, characterized in that, The water in component C is waste water.

10. The solid waste-based phosphate grouting reinforcement material for high-temperature and high-pressure stratum grouting and water plugging according to claim 1, characterized in that, The component A, the component B and the component C are compounded according to a water-cement ratio of 0.6-0.

8.

11. A method for preparing the solid waste-based phosphate grouting reinforcement material according to any one of claims 1-10 for use in high-temperature and high-pressure formation grouting and water plugging, characterized in that, The method comprises the following steps: red mud, magnesium compound, mineral admixture, high-temperature-resistant agent, retarder, water reducing agent, acid-base buffer, stabilizer, and surfactant are mixed according to a proportion to obtain component A; phosphate and defoaming agent are mixed and stirred according to a proportion to obtain component B; component A, component B and component C are mixed and stirred to obtain the solid waste-based phosphate grouting reinforcing material.

12. Application of the solid waste-based phosphate grouting reinforcing material as claimed in any one of claims 1-10 to high-temperature and high-pressure stratum grouting and water plugging.

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