Basalt grouting liquid and preparation method thereof

Abstract

The invention relates to the technical field of grouting liquid, and particularly discloses basalt grouting liquid and a preparation method thereof. The raw materials of the basalt grouting fluid comprise a component A and a component B, wherein the component A is mainly prepared from the following raw materials: acrylamide, acrylate, redispersible latex powder, a cross-linking agent, an accelerant, modified talcum powder, a dispersing agent, a defoaming agent, a stabilizer, a preservative and water; the component B is mainly prepared from the following raw materials: an initiator, modified talcum powder, a thickening agent, a dispersing agent, a defoaming agent, a stabilizer, a preservative and water. Through mutual cooperation of the raw materials, the basalt grouting fluid has the characteristics of high curing speed, high water swelling rate and high sand consolidation body compressive strength, also has good diffusivity, elasticity and water pressure resistance, can be used for waterproof layer reconstruction and crack reinforcement, has excellent durability, and meets market requirements.

Description

Technical Field

[0001] The present application relates to the technical field of grouting fluid, and more specifically, to a basalt grouting fluid and a preparation method thereof. Background Art

[0002] Grouting is the process of injecting a grouting liquid with gelling properties into cracks and other quality defects or building joints with the help of high-pressure grouting equipment. After the grouting liquid solidifies or gels, it plays a role in reinforcement or leak prevention. With the rapid development of urbanization and the emergence of high-rise buildings, large bridges, complex underground spaces and special engineering structures, the demand for building materials is becoming increasingly urgent, especially grouting liquid. The grouting liquid on the market generally includes cement-based grouting liquid and chemical grouting liquid. Cement-based grouting liquid has the advantages of low cost and wide application range, but its curing speed is slow, the curing time is long, and it is also prone to shrinkage cracking. Chemical grouting liquid achieves rapid consolidation through specific chemical reactions. Common ones include polyurethane grouting liquid, polyurea grouting liquid, epoxy resin grouting liquid, acrylate grouting liquid, etc.

[0003] Prior art: Patent application document CN118126253A discloses a two-component acrylate grouting material, the raw materials of which include component A and component B, wherein component A includes acrylic acid, metal oxide, crosslinking agent, and accelerator; component B includes carbonate, waterborne polyurethane emulsion, and initiator, and components A and B are mixed to obtain acrylate grouting material. The acrylate grouting material has good fluidity and is suitable for crack reinforcement, but the compressive strength of the sand body is slightly poor and needs to be further improved. Summary of the invention

[0004] In order to improve the compressive strength of the sand-consolidating body of basalt grouting fluid and enhance its durability, the present application provides a basalt grouting fluid and a preparation method thereof.

[0005] In the first aspect, the present application provides a basalt grouting fluid, which adopts the following technical solution: A basalt grouting liquid, wherein the raw materials of the basalt grouting liquid include component A and component B, and the weight ratio of the component A to the component B is (1-3): (1-3); The component A is mainly made of the following raw materials in parts by weight: 25-35 parts of acrylamide, 4-6 parts of acrylate, 4-6 parts of redispersible latex powder, 3-5 parts of crosslinking agent, 1-3 parts of accelerator, 5-7 parts of modified talc, 0.05-0.15 parts of dispersant, 0.05-0.15 parts of defoaming agent, 0.15-0.25 parts of stabilizer, 0.05-0.15 parts of preservative, and 45-55 parts of water; The B component is mainly made of the following raw materials in parts by weight: 4-6 parts of initiator, 5-7 parts of modified talc, 2-4 parts of thickener, 0.05-0.15 parts of dispersant, 0.05-0.15 parts of defoamer, 0.15-0.25 parts of stabilizer, 0.05-0.15 parts of preservative, and 80-90 parts of water.

[0006] The basalt grouting liquid of the present application is prepared with component A and component B in advance, and then the component A and component B are mixed and cured to form a cured rubber body. And through the mutual cooperation between component A and component B, the gel time is less than 420s, the water expansion rate is greater than 170%, and the compressive strength of the solid sand body is greater than 630kPa. It has the characteristics of fast curing speed, high water expansion rate, and high compressive strength of the solid sand body. The basalt grouting liquid of the present application can diffuse to form a waterproof layer, which can be used for the reconstruction of the waterproof layer. It can also fill the defects fully and densely, solidify quickly and seal the leakage, and has high elasticity, which can adapt to the expansion and contraction of cracks and the deformation of structural joints. It also has a high water pressure resistance. Under the impact of water pressure, it will not be washed out of the gap, and it will not leak or rebound after construction. It can be used for crack reinforcement, has excellent durability, and meets market demand.

[0007] The basalt grouting liquid of the present application, adds acrylamide, acrylate, and redispersible latex powder to the raw materials, and utilizes the mutual coordination therebetween to effectively improve the cohesive force, cross-linked network stability, and durability of the basalt grouting liquid, so that the cured rubber body is firmly attached to the cracks. Modified talcum powder is also added, which is obtained by treating talcum powder with N-(3-acryloxy-2-hydroxypropyl)-3-aminopropyl triethoxysilane, ethylene glycol methacrylate, and sucrose oleate, and a large amount of active groups such as siloxy, ester, hydroxyl, ether, and ketocarbonyl groups are introduced on the surface of talcum powder, which not only increases the dispersibility, compatibility, and bonding strength of modified talcum powder, but also ketocarbonyl groups can react with amino groups in acrylamide, increase crosslinking points, increase crosslinking density, improve network structure, accelerate curing speed, reduce gel time, increase water expansion rate and compressive strength of solid sand body, enhance durability, and make basalt grouting liquid show better comprehensive performance.

[0008] In multiple embodiments, the weight ratio of component A and component B is 1:1. The weight ratio can also be set to 1:2, 1:3, 2:1, 2:3, 3:1, 3:2 as needed, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0009] Optionally, the modified talc is mainly prepared by the following method: S1. Mix water and talc under constant stirring, add N-(3-acryloxy-2-hydroxypropyl)-3-aminopropyltriethoxysilane, stir for 2-4 hours, filter, and obtain a grafted solid; S2. Mix the ethanol aqueous solution, emulsifier and grafted solid under constant stirring, add ethylene glycol methacrylate and sucrose oleate, add initiator, stir for 4-6 hours, filter, wash and dry to obtain modified talcum powder; The weight ratio of talc, N-(3-acryloyloxy-2-hydroxypropyl)-3-aminopropyltriethoxysilane, ethylene glycol methacrylate and acetoacetate is 10:(2-4):(1-3):(1-3).

[0010] By adopting the above technical scheme, N-(3-acryloxy-2-hydroxypropyl)-3-aminopropyltriethoxysilane is first grafted on the surface of talcum powder to introduce a large number of active groups such as siloxy, ester, hydroxyl, carbon-carbon double bonds, and then, under the action of an initiator, ethylene glycol methacrylate and sucrose oleate are grafted by polymerization reaction to introduce a large number of active groups such as hydroxyl, ether, ester, ketocarbonyl, etc., to obtain modified talcum powder. The preparation method of the present application performs grafting in steps to increase the grafting stability, ensure the use effect of the modified talcum powder, and enhance the water expansion rate and the compressive strength of the sand body.

[0011] Optionally, the weight ratio of the talcum powder, emulsifier and initiator is 10:(3-7):(0.1-0.3).

[0012] By adopting the above technical scheme, the addition amount of emulsifier and initiator is optimized, so that the grafted solid, ethylene glycol methacrylate, sucrose oleate and initiator are fully contacted, the stability of the reaction is guaranteed, and then the quality and use effect of the modified talcum powder are ensured.

[0013] In multiple embodiments, the weight ratio of talc, emulsifier and initiator is 10:5:0.1. The weight ratio can also be set to 10:3:0.1, 10:3:0.2, 10:3:0.3, 10:5:0.2, 10:5:0.3, 10:7:0.1, 10:7:0.2, 10:7:0.3 as needed, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0014] Optionally, the weight ratio of talcum powder, water and ethanol aqueous solution is 1:(7-13):(7-13), and the mass concentration of ethanol in the ethanol aqueous solution is 30-50%.

[0015] In multiple embodiments, the weight ratio of talcum powder, water, and ethanol aqueous solution is 1:10:10, and the mass concentration of ethanol in the ethanol aqueous solution is 40%. The weight ratio can also be set to 1:7:7, 1:7:10, 1:7:13, 1:10:7, 1:10:13, 1:13:7, 1:13:10, 1:13:13 as needed, and the mass concentration can also be set to 30%, 35%, 45%, 50% as needed, but it is not limited to the listed values, and other values ​​not listed in the numerical range are also applicable.

[0016] Optionally, the emulsifier is one or more of Tween 80, Tween 40, Tween 20, Span 80, Span 40, and Span 20.

[0017] Optionally, the average particle size of the talc used in the modified talc is 1-30 μm. Preferably, the average particle size of the talc used in the modified talc is 1-20 μm. More preferably, the average particle size of the talc used in the modified talc is 1-10 μm.

[0018] By adopting the above technical solution, the particle size of talc is optimized, thereby achieving the limitation of the particle size of modified talc, ensuring the stability of the modified talc dispersion, and also maintaining good fluidity of the basalt grouting liquid, increasing the permeability and filling performance, and facilitating the construction of the basalt grouting liquid. In multiple implementation schemes, the average particle size of the talc used in the modified talc is 6.5 μm, and the average particle size can also be set to 1 μm, 5 μm, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm as needed, but it is not limited to the listed values, and other values ​​not listed within the numerical range are also applicable.

[0019] Optionally, the crosslinking agent is one or more of N,N-methylenebisacrylamide, bisphenol A bisallyl ether, 1,4-butanediol diacrylate, pentaerythritol diacrylate, and ethylene glycol diacrylate; The accelerator is one or more of triethanolamine, diethanolamine, tetramethylethylenediamine and dimethylaminopropionitrile.

[0020] By adopting the above technical solution, the crosslinking agent and the accelerator are optimized, which facilitates the selection of the crosslinking agent and the accelerator. The crosslinking agent can increase the crosslinking points, increase the crosslinking density, and improve the elasticity, strength and durability. The accelerator can effectively accelerate the curing reaction process and shorten the gel time.

[0021] Optionally, the initiator is one or more of ammonium persulfate, potassium persulfate, and sodium persulfate.

[0022] By adopting the above technical solution, the initiator is optimized, which facilitates the selection of the initiator. Moreover, when the initiator is selected from ammonium persulfate, potassium persulfate, and sodium persulfate, a polymerization reaction can be caused to increase the curing speed and strength of the basalt grouting liquid.

[0023] Optionally, the redispersible latex powder is one or more of ethylene-vinyl acetate copolymer, vinyl acetate-versatate vinyl copolymer, styrene-acrylate copolymer, and ethylene-vinyl acetate-vinyl ester terpolymer; The acrylate is one or more of magnesium acrylate, calcium acrylate, potassium acrylate and sodium acrylate.

[0024] By adopting the above technical solution, the redispersible latex powder and acrylate are optimized, which facilitates the selection of redispersible latex powder and acrylate. The redispersible latex powder can improve fluidity and construction properties, and enhance bonding properties and durability. Acrylate can accelerate the curing speed and strength, ensuring the efficiency and reliability of construction.

[0025] Optionally, the dispersant is one or more of dispersant OP-10, dispersant NP-10, dispersant TX-10, and dispersant AEO-10; The defoamer is one or more of defoamer JS-60, defoamer SAG1522, defoamer AT-99, and defoamer GP-330; The stabilizer is one or more of stabilizer FT-200, stabilizer FT-100, stabilizer ATF-100, stabilizer OTE-500; The preservative is one or more of preservative RC-60, preservative JL-109, preservative TH-L8001, and preservative ZB-605.

[0026] By adopting the above technical scheme, the dispersant, defoamer, stabilizer and preservative are optimized, which facilitates the selection of the dispersant, defoamer, stabilizer and preservative.

[0027] Optionally, the thickener is one or more of thickener TT-935, thickener KG-201, thickener ASE-60, and thickener TE-936.

[0028] By adopting the above technical solution, the thickener is optimized, which facilitates the selection of the thickener, and the thickener can improve the viscosity and stability of component B and increase storage stability.

[0029] In a second aspect, the present application provides a method for preparing the basalt grouting fluid, which adopts the following technical solution: A method for preparing basalt grouting liquid mainly comprises the following steps: Mix acrylamide, acrylate, redispersible latex powder, crosslinking agent, accelerator, modified talcum powder, dispersant, defoaming agent, stabilizer, preservative and water to obtain component A, which is set aside; Mix the initiator, modified talc, thickener, dispersant, defoamer, stabilizer, preservative and water to obtain component B for later use; Component A and component B are mixed to obtain basalt grouting liquid.

[0030] By adopting the above technical solution, it is convenient to prepare component A and component B, and it is also convenient to prepare basalt grouting liquid.

[0031] In summary, this application has at least the following beneficial effects: 1. The basalt grouting liquid of the present application has a gel time of <420s, a water expansion rate of >170%, and a compressive strength of the sand body of >630kPa through the mutual cooperation between the raw materials. It has the characteristics of fast curing speed, high water expansion rate, and high compressive strength of the sand body. In addition, the basalt grouting liquid has high diffusivity and can form a waterproof layer, which can be used for waterproof layer reconstruction. At the same time, it has high elasticity and water pressure resistance. It can not only adapt to the expansion and contraction of cracks and the deformation of structural joints, but also will not be washed out of the gap under the impact of water pressure. After construction, it will not leak again and rebound. It can be used for crack reinforcement, has excellent durability, and meets market demand.

[0032] 2. The basalt grouting liquid of the present application adds acrylic acid amide, acrylic acid salt, and redispersible latex powder to the raw materials, and reasonably formulates them to form a cross-linked network structure, increase adhesion and durability. Adding modified talcum powder to the raw materials, and introducing a large number of active groups such as siloxy, ester, hydroxyl, ether, ketone carbonyl, etc. to the talcum powder, not only increases the dispersibility, compatibility and bonding strength, but also increases the cross-linking points, increases the cross-linking density, improves the network structure, accelerates the curing speed, reduces the gel time, increases the compressive strength of the solid sand body, enhances the durability, and makes the basalt grouting liquid show better comprehensive performance. DETAILED DESCRIPTION

[0033] In order to make the present application easier to understand, the present application will be further described in detail below in conjunction with the examples, which are merely illustrative and are not intended to limit the scope of application of the present application. The raw materials or components used in the present application can be obtained through commercial routes or conventional methods unless otherwise specified.

[0034] Preparation Example Preparation Example 1 A modified talcum powder is mainly prepared by the following method: S1. Add 10 kg of talcum powder to 100 kg of water at a stirring rate of 400 r / min, and stir for 3 min. Add 3 kg of N-(3-acryloyloxy-2-hydroxypropyl)-3-aminopropyltriethoxysilane, and stir for 3 h. Filter to obtain a grafted solid.

[0035] Among them, the average particle size of talcum powder is 6.5 μm, and it is selected from Shijiazhuang Mengyu New Material Technology Co., Ltd.

[0036] S2. Add 5 kg of emulsifier and the grafted solid obtained in step S1 to 100 kg of 40% ethanol aqueous solution at a stirring rate of 400 r / min, and stir for 3 min. Add 2 kg of ethylene glycol acetoacetate and 2 kg of sucrose oleate, and stir for 3 min. Add 0.1 kg of initiator, stir for 5 h, filter, wash, and dry to constant weight to obtain modified talc.

[0037] Among them, the emulsifier is Tween 80 and the initiator is ammonium persulfate.

[0038] In the washing process, first use 20 kg of ethanol to wash once, then use 20 kg of 50% ethanol aqueous solution to wash once, and then use 20 kg of water to wash once to complete the washing process.

[0039] Preparation Example 2 A modified talc powder, which is different from Preparation Example 1 in that, in the preparation method of the modified talc powder, the added amounts of N-(3-acryloxy-2-hydroxypropyl)-3-aminopropyltriethoxysilane, ethylene glycol methacrylate, and sucrose oleate are different, and the added amount of N-(3-acryloxy-2-hydroxypropyl)-3-aminopropyltriethoxysilane is 2kg, the added amount of ethylene glycol methacrylate is 1kg, and the added amount of sucrose oleate is 3kg.

[0040] Preparation Example 3 A modified talc powder, which is different from Preparation Example 1 in that, in the preparation method of the modified talc powder, the added amounts of N-(3-acryloxy-2-hydroxypropyl)-3-aminopropyltriethoxysilane, ethylene glycol acetoacetate methacrylate, and sucrose oleate are different, and the added amount of N-(3-acryloxy-2-hydroxypropyl)-3-aminopropyltriethoxysilane is 4kg, the added amount of ethylene glycol acetoacetate methacrylate is 3kg, and the added amount of sucrose oleate is 1kg. Example

[0041] Table 1 Amount of raw materials used for component A (unit: ×10g) Example Example 1 Example 2 Example 3 Acrylamide 30 25 35 Acrylate 5 6 4 Redispersible latex powder 5 6 4 Crosslinking agent 4 3 5 Accelerator 2 3 1 Modified talc 6 5 7 Dispersants 0.1 0.05 0.15 Defoaming agent 0.1 0.15 0.05 Stabilizer 0.2 0.25 0.15 preservative 0.1 0.05 0.15 water 50 45 55 Table 2 Raw material dosage of component B (unit: ×10g) Example 1 A basalt grouting liquid, whose raw materials include component A and component B, the weight ratio of component A to component B is 1:1, the raw materials and the raw material ratio of component A are shown in Table 1, and the raw materials and the raw material ratio of component B are shown in Table 2.

[0042] Among them, in component A, the acrylate is magnesium acrylate; the redispersible latex powder is ethylene-vinyl acetate copolymer, and is selected from Dongguan Weicai Plastic Raw Materials Co., Ltd.; the crosslinking agent is N,N-methylenebisacrylamide; the accelerator is triethanolamine; the modified talc powder is prepared by the method of Preparation Example 1; the dispersant is dispersant OP-10; the defoamer is defoamer JS-60; the stabilizer is stabilizer FT-200; and the preservative is preservative RC-60.

[0043] In component B, the initiator is ammonium persulfate; the modified talc is prepared by the method of Preparation Example 1; the thickener is thickener TT-935; the dispersant is dispersant OP-10; the defoamer is defoamer JS-60; the stabilizer is stabilizer FT-200; and the preservative is preservative RC-60.

[0044] A method for preparing basalt grouting liquid mainly comprises the following steps: Add acrylamide, acrylate, redispersible latex powder, crosslinking agent and accelerator to water, stir for 1 minute, add dispersant, defoamer, stabilizer and preservative, stir for 1 minute, add modified talcum powder, stir for 3 minutes, and obtain component A for use.

[0045] Add the initiator to the water and stir for 1 min. Add the thickener, dispersant, defoamer, stabilizer and preservative and stir for 1 min. Add the modified talcum powder and stir for 3 min to obtain component B for later use.

[0046] Component B was added to component A and stirred for 10 seconds to obtain basalt grouting liquid.

[0047] Example 2 A basalt grouting liquid, which is different from Example 1 in that the raw material ratios of component A and component B are different, and the raw materials and raw material ratios of component A are shown in Table 1, and the raw materials and raw material ratios of component B are shown in Table 2.

[0048] Example 3 A basalt grouting liquid, which is different from Example 1 in that the raw material ratios of component A and component B are different, and the raw materials and raw material ratios of component A are shown in Table 1, and the raw materials and raw material ratios of component B are shown in Table 2.

[0049] Example 4 A basalt grouting liquid is disclosed, which is different from Example 1 in that the modified talc powder in the raw materials of component A and component B has different sources, and the modified talc powder is prepared by the method of Preparation Example 2.

[0050] Example 5 A basalt grouting liquid is different from Example 1 in that the modified talc powder in the raw materials of component A and component B has different sources, and the modified talc powder is prepared by the method of Preparation Example 3.

[0051] Comparative Example Comparative Example 1 A basalt grouting liquid is different from Example 1 in that the raw materials of component A and component B are replaced with modified talc by an equal amount of talc.

[0052] Comparative Example 2 A basalt grouting liquid, which is different from Example 1 in that in the raw materials of component A and component B, in the preparation method of modified talc, an equal amount of N-(3-acryloxy-2-hydroxypropyl)-3-aminopropyltriethoxysilane is used to replace ethylene glycol methacrylate and sucrose oleate.

[0053] Comparative Example 3 A basalt grouting liquid is different from Example 1 in that in the raw materials of component A and component B, in the preparation method of modified talcum powder, an equal amount of ethylene glycol acetoacetate methacrylate is used to replace sucrose oleate.

[0054] Comparative Example 4 A basalt grouting liquid is different from Example 1 in that in the raw materials of component A and component B, in the preparation method of modified talcum powder, ethylene glycol acetoacetate methacrylate is replaced by an equal amount of sucrose oleate.

[0055] Performance Testing The basalt grouting liquids obtained in Examples 1-5 and Comparative Examples 1-4 were respectively taken, and the gel time, water expansion rate, and compressive strength of the sand-solidified body of the basalt grouting liquids were tested according to JC / T2037-2010 "Acrylate Grouting Materials". The test results are shown in Table 3.

[0056] Table 3 Test results As can be seen from Table 3, the basalt grouting fluid of the present application has a relatively low gel time of 365-417s, showing the characteristics of fast curing speed. It also has a relatively high water expansion rate and compressive strength of the sand body, with a water expansion rate of 171-178% and a compressive strength of 638-667kPa, showing the characteristics of high water expansion rate and high compressive strength of the sand body, improving the durability of the basalt grouting fluid, being able to adapt to the expansion and contraction of cracks and the deformation of structural joints, being able to be used for the reconstruction of waterproof layers, and also being able to be used for crack reinforcement, having excellent durability, and meeting market demand.

[0057] Comparative Example 1 and Example 1 are compared. Talc is added to the A component and the B component of the basalt grouting liquid in Comparative Example 1; modified talc is added to the A component and the B component of the basalt grouting liquid in Example 1. It can be seen that modifying talc can improve the use effect of modified talc, reduce the gel time, and increase the compressive strength of the sand solidification body.

[0058] Comparative Examples 2-4 and Example 1 are compared. The modified talc of Comparative Example 2 is obtained by treating talc with N-(3-acryloxy-2-hydroxypropyl)-3-aminopropyl triethoxysilane; the modified talc of Comparative Example 3 is obtained by treating talc with N-(3-acryloxy-2-hydroxypropyl)-3-aminopropyl triethoxysilane and ethylene glycol methacrylate; the modified talc of Comparative Example 4 is obtained by treating talc with N-(3-acryloxy-2-hydroxypropyl)-3-aminopropyl triethoxysilane and sucrose oleate; the modified talc of Example 1 is obtained by treating talc with N-(3-acryloxy-2-hydroxypropyl)-3-aminopropyl triethoxysilane, ethylene glycol methacrylate and sucrose oleate. It can be seen from this that by grafting N-(3-acryloxy-2-hydroxypropyl)-3-aminopropyltriethoxysilane on the surface of talc, and then using the polymerization reaction to simultaneously graft ethylene glycol methacrylate and sucrose oleate, a large number of active groups such as hydroxyl, ether, ester, and ketone carbonyl groups are introduced, which can effectively increase the interaction between the modified talc and the matrix, improve the network structure, accelerate the curing rate, improve the compressive strength of the solid sand body, and enhance the durability and adaptability.

[0059] It should be noted that the embodiments described above are only used to explain the present application and do not constitute any limitation to the present application. The present application is described with reference to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory words, rather than restrictive words. The present application may be modified as specified within the scope of the claims of the present application, and the present invention may be revised without departing from the scope and spirit of the present application. Although the present application described therein relates to specific methods, materials and embodiments, it does not mean that the present application is limited to the specific examples disclosed therein. On the contrary, the present application can be extended to all other methods and applications with the same functions.

Claims

1. A basalt grouting fluid, characterized in that: The raw materials of the basalt grouting liquid include component A and component B, and the weight ratio of the component A to the component B is (1-3): (1-3); The component A is mainly made of the following raw materials in parts by weight: 25-35 parts of acrylamide, 4-6 parts of acrylate, 4-6 parts of redispersible latex powder, 3-5 parts of crosslinking agent, 1-3 parts of accelerator, 5-7 parts of modified talc, 0.05-0.15 parts of dispersant, 0.05-0.15 parts of defoaming agent, 0.15-0.25 parts of stabilizer, 0.05-0.15 parts of preservative, and 45-55 parts of water; The B component is mainly made of the following raw materials in parts by weight: 4-6 parts of initiator, 5-7 parts of modified talc, 2-4 parts of thickener, 0.05-0.15 parts of dispersant, 0.05-0.15 parts of defoamer, 0.15-0.25 parts of stabilizer, 0.05-0.15 parts of preservative, and 80-90 parts of water.

2. The basalt grouting liquid according to claim 1, characterized in that: The modified talcum powder is mainly prepared by the following method: S1. Mix water and talc under constant stirring, add N-(3-acryloxy-2-hydroxypropyl)-3-aminopropyltriethoxysilane, stir for 2-4 hours, filter, and obtain a grafted solid; S2. Mix the ethanol aqueous solution, emulsifier and grafted solid under constant stirring, add ethylene glycol methacrylate and sucrose oleate, add initiator, stir for 4-6 hours, filter, wash and dry to obtain modified talcum powder; The weight ratio of talc, N-(3-acryloyloxy-2-hydroxypropyl)-3-aminopropyltriethoxysilane, ethylene glycol methacrylate and acetoacetate is 10:(2-4):(1-3):(1-3).

3. A basalt grouting liquid according to claim 2, characterized in that: The weight ratio of the talcum powder, emulsifier and initiator is 10:(3-7):(0.1-0.3).

4. The basalt grouting liquid according to claim 2, characterized in that: The average particle size of the talc used in the modified talc is 1-30 μm.

5. The basalt grouting liquid according to claim 1, characterized in that: The crosslinking agent is one or more of N,N-methylenebisacrylamide, bisphenol A bisallyl ether, 1,4-butanediol diacrylate, pentaerythritol diacrylate, and ethylene glycol diacrylate; The accelerator is one or more of triethanolamine, diethanolamine, tetramethylethylenediamine and dimethylaminopropionitrile.

6. The basalt grouting liquid according to claim 1, characterized in that: The initiator is one or more of ammonium persulfate, potassium persulfate and sodium persulfate.

7. The basalt grouting liquid according to claim 1, characterized in that: The redispersible latex powder is one or more of ethylene-vinyl acetate copolymer, vinyl acetate-versatate vinyl copolymer, styrene-acrylate copolymer, and ethylene-vinyl acetate-vinyl ester terpolymer; The acrylate is one or more of magnesium acrylate, calcium acrylate, potassium acrylate and sodium acrylate.

8. The basalt grouting liquid according to claim 1, characterized in that: The dispersant is one or more of dispersant OP-10, dispersant NP-10, dispersant TX-10, and dispersant AEO-10; The defoamer is one or more of defoamer JS-60, defoamer SAG1522, defoamer AT-99, and defoamer GP-330; The stabilizer is one or more of stabilizer FT-200, stabilizer FT-100, stabilizer ATF-100, stabilizer OTE-500; The preservative is one or more of preservative RC-60, preservative JL-109, preservative TH-L8001, and preservative ZB-605.

9. The basalt grouting liquid according to claim 1, characterized in that: The thickener is one or more of thickener TT-935, thickener KG-201, thickener ASE-60, and thickener TE-936.

10. A method for preparing a basalt grouting liquid according to any one of claims 1 to 9, characterized in that: The main steps are as follows: Mix acrylamide, acrylate, redispersible latex powder, crosslinking agent, accelerator, modified talcum powder, dispersant, defoaming agent, stabilizer, preservative and water to obtain component A, which is set aside; Mix the initiator, modified talc, thickener, dispersant, defoamer, stabilizer, preservative and water to obtain component B for later use; Component A and component B are mixed to obtain basalt grouting liquid.

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