Composite stratum modified cement-based grouting material and preparation device thereof
By combining composite formation modified cement-based grouting materials and preparation devices, the problems of large particle size and material waste in traditional cement-based grouts are solved, the strength and mixing uniformity of the materials are improved, and efficient material utilization is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA TIESIJU CIVIL ENGINEERING GROUP CO LTD
- Filing Date
- 2025-12-25
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional cement-based slurries have large particle sizes and are only suitable for coarse sand or wide fracture formations. They also have low 28-day compressive strength and are prone to material residue on the inner wall of the equipment during preparation, resulting in waste.
The composite formation modified cement-based grouting material is used, which contains a specific proportion of cement, redispersible latex powder, mineral admixtures, superplasticizers, setting regulators, rheology modifiers and fiber reinforcement materials, and uses a spiral wall cleaning scraper and planetary gear system in the preparation device for mixing and discharge control.
It improves the bond strength between the slurry and concrete interface, reduces the risk of brittle fracture, increases compressive and flexural strength, reduces material waste, and enables three-dimensional dynamic mixing and precise discharge of the slurry.
Smart Images
Figure CN121894971A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of grouting materials technology, and in particular to a composite formation modified cement-based grouting material and its preparation apparatus. Background Technology
[0002] Composite modified cement-based grouting material is a high-performance composite material made with cement as the matrix and modified by adding polymers, mineral admixtures, superplasticizers, and other modifying components. It is mainly used in engineering fields such as formation reinforcement, fracture sealing, and aquifer modification. Its core technical principle includes optimizing the microstructure to achieve high strength, early strength, high fluidity, and micro-expansion characteristics.
[0003] Traditional cement-based grouts, due to their large particle size, are only suitable for coarse sand or widely fractured formations (permeability coefficient > 5 × 10⁻⁶). -2 The compressive strength is low (5-15 MPa) and the 28-day compressive strength is relatively low, making it difficult to meet the requirements for high-strength reinforcement. During the preparation of existing cement-based grouting materials, due to the viscosity of the grouting material, a large amount of material easily remains on the inner wall of the device, resulting in material waste. Summary of the Invention
[0004] The purpose of this invention is to address the shortcomings of existing cement-based grouting materials and their preparation devices by proposing a composite formation modified cement-based grouting material and its preparation device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A composite formation modified cement-based grouting material comprises the following components: 30%–40% cement, 1%–4% redispersible latex powder, 55%–68% mineral admixtures, 0.3%–0.7% superplasticizer, 0.3%–0.7% setting regulator, 0.3%–0.7% rheology modifier, and 0.1%–0.3% fiber reinforcement material; Its specific proportions are: 38% cement, 2% redispersible latex powder, 58.3% mineral admixtures, 0.5% superplasticizer, 0.5% setting regulator, 0.5% rheology modifier and 0.2% reinforcing material; The redispersible latex powder includes at least one of ethylene-vinyl acetate, styrene-acrylate, and butadiene-styrene latex; The mineral admixture includes at least one of the following: fly ash, silica fume, zeolite powder, finely ground quartz sand, hard slag, and granulated blast furnace slag powder; The setting regulator is tartaric acid, the rheology modifier includes defoamer and stabilizer, and the fiber reinforcement material includes at least one of polypropylene fiber, basalt fiber, polyvinyl alcohol fiber and steel fiber.
[0006] As a preferred embodiment of the present invention: the redispersible latex powder comprises 40% ethylene-vinyl acetate and 60% butadiene-styrene latex; the mineral admixture comprises 30% silica fume, 40% finely ground quartz sand and 30% granulated blast furnace slag powder; the stabilizer is methylcellulose, the defoamer is methyl silicone oil, the rheology modifier comprises 65% methylcellulose and 35% methyl silicone oil; the fiber reinforcement material comprises 60% basalt fiber, 25% polyvinyl alcohol fiber and 15% steel fiber.
[0007] An apparatus for preparing a composite formation modified cement-based grouting material, used to prepare the aforementioned composite formation modified cement-based grouting material, comprising: The main body of the mixing tank has a protective tank cover fixedly installed at its top. A mixing main shaft for mixing cement-based grouting materials is rotatably installed in the middle of the protective tank cover. Multiple sets of mixing and stirring blades are welded at equal intervals on the outer wall of the mixing main shaft. A rotating ring frame is rotatably installed inside the protective tank cover, and multiple connecting rods are equidistantly connected to its bottom end. A spiral arc rod is welded between two adjacent connecting rods. A spiral wall-cleaning scraper for cleaning the inner wall of the mixing tank body is fixedly installed on the outer wall of the spiral arc rod. A fixed connecting ring is fixedly connected to the bottom end of the multiple connecting rods. A cross support frame is fixed to the inner wall of the fixed connecting ring. The cross support frame is rotatably connected to the lower part of the mixing main shaft. An internal gear ring is fixedly installed on the lower part of the inner wall of the rotating ring frame. Multiple planetary gears are equidistantly meshed on the inner wall of the internal gear ring. The multiple planetary gears are meshed with a drive gear. The drive gear is fixedly installed on the middle part of the outer wall of the mixing main shaft.
[0008] As a preferred embodiment of the present invention: a mounting bearing is fixedly installed on the outer wall of the rotating ring frame, a fixing mounting ring is fixedly installed on the outer wall of the mounting bearing, and the fixing mounting ring is fixedly installed on the upper part of the inner wall of the protective tank cover.
[0009] As a preferred embodiment of the present invention: a gear mounting shaft is rotatably mounted in the middle of the planetary gear, and a mounting ring frame is fixedly connected to the top of multiple gear mounting shafts, the mounting ring frame being fixedly mounted on the inner wall of the top of the protective tank cover.
[0010] The bottom of the mixing tank body is integrally formed with a discharge mounting cylinder, and a discharge limiting cylinder is fixedly installed inside the discharge mounting cylinder. Multiple discharge channels are equidistantly opened on the top of the outer wall of the discharge limiting cylinder, and a discharge guide cylinder is slidably installed inside the discharge limiting cylinder.
[0011] Based on the aforementioned scheme: a limiting connecting ring is fixedly connected to the lower part of the outer wall of the discharge guide cylinder, a sealing rubber ring is provided at the top of the limiting connecting ring, and multiple guide slide rods are fixedly connected at equal intervals at the bottom of the limiting connecting ring.
[0012] Based on the aforementioned scheme: a guide ring seat is slidably connected to the bottom outer wall of the guide slide rod, a discharge connecting pipe is fixedly connected to the bottom inner wall of the guide ring seat, and a fixed plate frame is fixedly connected to the outer wall of the guide ring seat.
[0013] Based on the aforementioned scheme: multiple mounting connecting columns are fixedly installed at equal intervals on the top of the fixed plate frame, and the mounting connecting columns are fixedly installed at the bottom of the discharge limiting cylinder.
[0014] Based on the aforementioned scheme: two positioning pins are symmetrically welded to the bottom outer wall of the discharge guide cylinder, and a lifting connecting arm is fixedly installed at the end of the positioning pin. A cylinder mounting bracket is fixedly installed at the bottom of the mixing tank body, and two linked lifting cylinders are symmetrically installed at the bottom of the cylinder mounting bracket. The telescopic end of the lifting cylinder is fixedly connected to the lifting connecting arm.
[0015] The beneficial effects of this invention are as follows: 1. This composite stratum modified cement-based grouting material, through the compounding of ethylene-vinyl acetate and butadiene-styrene latex, significantly improves the bond strength between the grout and concrete interface and reduces the risk of brittle fracture; the introduction of mineral admixtures, utilizing the volcanic ash reaction and micro-filling effect, improves compressive strength and reduces chloride ion penetration, thus delaying steel corrosion; the composite reinforcement of basalt fiber and steel fiber overcomes the performance limitations of single fiber, inhibits crack propagation, and improves flexural strength.
[0016] 2. The preparation device for the composite formation modified cement-based grouting material uses a spiral wall scraper to simultaneously scrape off residues from the tank wall during the mixing process, reducing material waste and preventing clumping that could affect the grout's performance. Through the meshing of the drive gear and planetary gear, the rotating ring frame and spiral arc rod are driven to rotate, achieving three-dimensional dynamic mixing of the grout and improving the mixing uniformity.
[0017] 3. The preparation device for the composite stratum modified cement-based grouting material achieves precise opening and closing of the discharge channel through the cooperation of the positioning installation pin and the guide slide rod, and the sealing rubber ring ensures zero leakage in the discharge channel; the main body of the mixing tank and the supporting bracket adopt a snap-fit structure, which is convenient for cleaning and maintenance; the servo motor and PLC control system are integrated to support parameter preset and remote monitoring, thereby improving the level of construction automation. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the overall assembly of the preparation device of the present invention; Figure 2 This is a partial cross-sectional view of the overall assembly of the preparation device of the present invention. Figure 3 For the present invention Figure 2 A magnified schematic diagram of the partial structure at point A in the middle; Figure 4 For the present invention Figure 2 A magnified schematic diagram of the local structure at point B; Figure 5 For the present invention Figure 2 A magnified schematic diagram of the structure at point C.
[0019] In the diagram: 1. Support bracket; 2. Mixing tank body; 3. Feeding connecting cylinder; 4. Protective tank cover; 5. Mounting bracket; 6. Servo motor; 7. Coupling; 8. Mixing main shaft; 9. Drive gear; 10. Mixing agitator blades; 11. Planetary gear; 12. Gear mounting shaft; 13. Mounting ring frame; 14. Fixed mounting ring; 15. Mounting bearing; 16. Rotating ring frame; 17. Internal gear ring; 18. Connecting upright; 19. Helical arc rod; 20. Screw 21. Rotary wall cleaning scraper; 22. Fixed connecting ring; 23. Cross support frame; 24. Discharge mounting cylinder; 25. Discharge limiting cylinder; 26. Discharge through groove; 27. Discharge guide cylinder; 28. Cylinder mounting bracket; 29. Lifting cylinder; 30. Limiting connecting ring; 31. Sealing rubber ring; 32. Guide slide rod; 33. Guide ring seat; 34. Discharge connecting pipe; 35. Fixed plate frame; 36. Mounting connecting column; 37. Positioning mounting pin; 38. Lifting connecting arm. Detailed Implementation
[0020] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.
[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0022] Example 1: A composite formation modified cement-based grouting material, comprising the following components: 30%–40% cement, 1%–4% redispersible latex powder, 55%–68% mineral admixtures, 0.3%–0.7% superplasticizer, 0.3%–0.7% setting regulator, 0.3%–0.7% rheology modifier, and 0.1%–0.3% fiber reinforcement.
[0023] The specific proportions of the cement-based grouting material are: 38% cement, 2% redispersible latex powder, 58.3% mineral admixtures, 0.5% superplasticizer, 0.5% setting regulator, 0.5% rheology modifier, and 0.2% reinforcing material.
[0024] The redispersible latex powder includes at least one of ethylene-vinyl acetate, styrene-acrylate, and butadiene-styrene latex; the mineral admixture includes at least one of fly ash, silica fume, zeolite powder, finely ground quartz sand, hard slag, and granulated blast furnace slag powder; the setting regulator is tartaric acid; the rheology modifier includes defoamers and stabilizers; and the fiber reinforcement material includes at least one of polypropylene fiber, basalt fiber, polyvinyl alcohol fiber, and steel fiber.
[0025] The redispersible latex powder comprises 40% ethylene-vinyl acetate and 60% butadiene-styrene latex; the two work synergistically to enhance interfacial adhesion and reduce the risk of brittle fracture.
[0026] The mineral admixture includes 30% silica fume, 40% finely ground silica sand, and 30% granulated blast furnace slag powder. The micro-filling effect of silica fume and the pozzolanic reaction of granulated blast furnace slag powder significantly improve compressive strength. The microcrystalline structure of silica fume fills the pores, reduces chloride ion penetration, and delays steel corrosion. The active components of granulated blast furnace slag powder promote secondary hydration and improve chemical corrosion resistance. Finely ground silica sand improves the plasticity and hardening properties of the grout, and regulates the material's fluidity and compressive strength.
[0027] The stabilizer is methylcellulose, the defoamer is methyl silicone oil, and the rheology modifier includes 65% methylcellulose and 35% methyl silicone oil. The rheology modifier, a combination of methylcellulose and methyl silicone oil, optimizes the fluidity of the slurry, reduces bleeding, avoids stratification and segregation, and ensures long-term stability. The defoaming function of methyl silicone oil reduces the air content of the slurry, avoids pore defects, and improves density.
[0028] The synergistic effect of superplasticizers and rheology modifiers reduces grout viscosity, achieving high fluidity, making it suitable for grouting in narrow spaces or complex structures.
[0029] Tartaric acid, a setting regulator, precisely adjusts the initial and final setting times to adapt to different construction environments and avoids quality problems caused by setting too quickly or too slowly.
[0030] The fiber-reinforced material comprises 60% basalt fiber, 25% polyvinyl alcohol fiber, and 15% steel fiber; it effectively inhibits crack propagation and improves flexural strength and impact resistance; the composite reinforcement of basalt fiber and steel fiber breaks through the performance limitations of single fiber.
[0031] Example 2: A preparation apparatus for a composite formation modified cement-based grouting material, such as... Figures 1 to 5As shown, the method for preparing the above-mentioned composite formation modified cement-based grouting material includes: The mixing tank body 2 is fixedly installed at the top of the support bracket 1. A protective tank cover 4 is fixedly installed at the top of the mixing tank body 2. A mixing main shaft 8 for mixing cement-based grouting materials is rotatably installed in the middle of the protective tank cover 4. Multiple sets of mixing and stirring blades 10 are welded at equal intervals on the outer wall of the mixing main shaft 8.
[0032] The main body of the support bracket 1 is configured as a support ring seat, which is snapped into the bottom end of the mixing tank body 2. Multiple support curved arms are welded at equal intervals to the bottom end of the support ring seat, and support rings are welded to the bottom end of the support curved arms; thus fully ensuring the stability of the mixing tank body 2.
[0033] The top of the outer wall of the mixing tank body 2 is welded with a feeding connecting cylinder 3, which can be used for quantitative feeding through a negative pressure feeding device or a weightless feeding device (both of which are existing technologies); the top of the protective tank cover 4 is integrally formed with an installation rotating cylinder, and the mixing main shaft 8 is rotatably connected to the installation rotating cylinder through a bearing.
[0034] A mounting bracket 5 is fixedly installed on the top of the protective tank cover 4. A servo motor 6 is fixedly installed on the top of the mounting bracket 5. A coupling 7 is fixedly installed on the output shaft of the servo motor 6. The coupling 7 is fixedly installed on the top of the mixing main shaft 8. The servo motor 6 is directly controlled by a controller (not shown, such as a PLC control system), which facilitates rapid adjustment of the mixing speed.
[0035] Each set of mixing blades 10 is set with multiple blades at equal intervals. Each mixing blade 10 is set as a spiral fan shape, and multiple dispersing arms are integrally formed at equal intervals on both sides of the blade surface. When the mixing main shaft 8 rotates counterclockwise, the mixing blades 10 lift up the cement-based grouting material to make the various materials fully mixed. When the mixing main shaft 8 rotates clockwise, the cement-based grouting material can be pressed down to facilitate the discharge of the cement-based grouting material.
[0036] A mounting ring 14 is fixedly installed on the top of the inner wall of the protective tank cover 4. A mounting bearing 15 is fixedly installed on the inner wall of the mounting ring 14. A rotating ring frame 16 is fixedly installed on the inner wall of the inner ring of the mounting bearing 15. An internal toothed ring 17 is fixedly installed on the bottom of the inner wall of the rotating ring frame 16.
[0037] A drive gear 9 is fixedly installed on the upper part of the outer wall of the mixing main shaft 8. Multiple planetary gears 11 are equidistantly meshed on the outer wall of the drive gear 9. All planetary gears 11 are meshed with the inner wall of the internal gear ring 17. A gear mounting shaft 12 is rotatably installed in the middle of the planetary gears 11. The top of the multiple gear mounting shafts 12 is fixedly connected to the mounting ring frame 13. The mounting ring frame 13 is fixedly installed on the top inner wall of the protective tank cover 4.
[0038] Multiple connecting rods 18 are equidistantly connected to the bottom of the rotating ring frame 16. A spiral arc rod 19 is welded between two adjacent connecting rods 18. A spiral wall cleaning scraper 20 for cleaning the inner wall of the mixing tank body 2 is fixedly installed on the outer wall of the spiral arc rod 19. The spiral arc rod 19 drives the spiral wall cleaning scraper 20 to rotate with the rotating ring frame 16, scraping off the cement-based grouting material adhering to the inner wall of the mixing tank body 2, so as to avoid the raw materials adhering to the inner wall of the mixing tank body 2, reducing the mixing effect, or causing a large amount of residue and material waste.
[0039] The bottom ends of multiple connecting poles 18 are fixedly connected to a fixed connecting ring 21. The inner wall of the fixed connecting ring 21 is fixed with a cross support frame 22. The cross support frame 22 is rotatably connected to the lower part of the mixing main shaft 8 through a bearing. The top and bottom of the cross support frame 22 are equipped with bearing caps to reduce the impact of cement-based grouting material on the bearing.
[0040] The bottom end of the mixing tank body 2 is integrally formed with a discharge mounting cylinder 23. A discharge limiting cylinder 24 is fixedly installed inside the discharge mounting cylinder 23. Multiple discharge channels 25 are equidistantly opened on the top of the outer wall of the discharge limiting cylinder 24, and a discharge guide cylinder 26 is slidably installed inside the discharge limiting cylinder 24.
[0041] Flange 1 is welded to the bottom end of the discharge mounting cylinder 23, and flange 2 is welded to the bottom end of the discharge limiting cylinder 24. Flange 2 is fixedly installed at the bottom end of flange 1, and the top of the discharge limiting cylinder 24 extends into the interior of the mixing tank body 2. The bottom inner wall of the discharge channel 25 is flush with the bottom inner wall of the mixing tank body 2, and the top inner wall of the discharge channel 25 is lower than the top inner wall of the discharge limiting cylinder 24. The top of the discharge guide cylinder 26 can fit against the top inner wall of the discharge limiting cylinder 24, effectively sealing the discharge channel and preventing raw material leakage.
[0042] A limiting connecting ring 29 is fixedly connected to the lower part of the outer wall of the discharge guide cylinder 26. A sealing rubber ring 30 is provided at the top of the limiting connecting ring 29. When the top of the discharge guide cylinder 26 is in contact with the inner wall of the top of the discharge limiting cylinder 24, the sealing rubber ring 30 is tightly in contact with the flange 2. Multiple guide slide rods 31 are fixedly connected at equal intervals at the bottom of the limiting connecting ring 29.
[0043] The bottom outer wall of the guide slide rod 31 is slidably connected to the guide ring seat 32, and the bottom inner wall of the guide ring seat 32 is fixedly connected to the discharge connecting pipe 33. The inner diameter of the guide ring seat 32 is the same as the outer diameter of the discharge guide cylinder 26. When the discharge guide cylinder 26 descends, it can be directly inserted into the guide ring seat 32 and fit against the top of the discharge connecting pipe 33.
[0044] The outer wall of the guide ring seat 32 is fixedly connected to a fixed plate frame 34. The top of the fixed plate frame 34 is fixedly installed with multiple mounting connecting columns 35 at equal intervals by bolts. The mounting connecting columns 35 are fixedly installed at the bottom of the flange of the discharge limiting cylinder 24.
[0045] Two positioning pins 36 are symmetrically welded to the bottom outer wall of the discharge guide cylinder 26. A lifting connecting arm 37 is fixedly mounted at the end of each positioning pin 36. The end of the lifting connecting arm 37 furthest from the discharge guide cylinder 26 is set as a mounting block, such as... Figure 5 As shown, when the discharge guide cylinder 26 is fully inserted into the guide ring seat 32, the bottom end of the lifting connecting arm 37 is in contact with the top end of the guide ring seat 32.
[0046] A cylinder mounting bracket 27 is fixedly installed at the bottom of the mixing tank body 2. Two linked lifting cylinders 28 are symmetrically installed at the bottom of the cylinder mounting bracket 27. The telescopic end of the lifting cylinder 28 is fixedly connected to the mounting block of the lifting connecting arm 37. The two lifting cylinders 28 are the same, and the model with controllable stroke is selected and directly controlled by the controller.
[0047] In this embodiment, the raw materials of the composite stratum modified cement-based grouting material from Embodiment 1 are introduced into the mixing tank body 2 according to the proportion and process flow (refer to the prior art) via a feeding device (an appropriate proportion of water is pre-injected; the water-cement ratio needs to be determined comprehensively based on project requirements, geological conditions, and material characteristics). Before the raw materials are introduced, the servo motor 6 is first started by the controller. The servo motor 6 drives the mixing agitator 10 to rotate via the mixing spindle 8, and drives the rotating ring frame 16 to rotate via the drive gear 9, planetary gear 11, and internal gear ring 17. Then, the spiral arc rod 19 drives the spiral wall cleaning scraper 20 to rotate at low speed to scrape the inner wall of the mixing tank body 2. During the raw material introduction process, the output speed of the servo motor 6 is adjusted as needed. For example, during the introduction of superplasticizer, setting regulator, rheology modifier and fiber reinforcement material, the speed of the mixing spindle 8 is increased to make the raw materials mix quickly and thoroughly. During the introduction of mineral admixtures, the speed of the mixing spindle 8 is reduced to reduce the wear of the mixing spindle 8 and other structures. After the initial mixing, the speed of the mixing spindle 8 is increased to make the raw materials mix more evenly. After the cement-based grouting material is mixed, the mixing spindle 8 reverses and operates at a low speed. Then, the controller activates two linked lifting cylinders 28, which extend and, through the lifting connecting arm 37 and the positioning mounting pin 36, drive the discharge guide cylinder 26 to descend, so that the bottom of the discharge guide cylinder 26 inserts into the guide ring seat 32. During the descent of the discharge guide cylinder 26, the discharge channel 25 gradually opens, and the cement-based grouting material (fluid) inside the mixing tank body 2 flows out and is discharged into the designated container through the discharge connecting pipe 33. When the container is full or a designated amount of cement-based grouting material is released, the lifting cylinder 28 retracts, causing the discharge guide cylinder 26 to quickly close the discharge channel 25. The reaction speed is fast, the operation is convenient, and there is no leakage of materials.
[0048] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A composite formation modified cement-based grouting material, characterized in that, It includes the following components: 30%–40% cement, 1%–4% redispersible latex powder, 55%–68% mineral admixtures, 0.3%–0.7% superplasticizer, 0.3%–0.7% setting regulator, 0.3%–0.7% rheology modifier, and 0.1%–0.3% fiber reinforcement. Its specific proportions are: 38% cement, 2% redispersible latex powder, 58.3% mineral admixtures, 0.5% superplasticizer, 0.5% setting regulator, 0.5% rheology modifier and 0.2% reinforcing material; The redispersible latex powder includes at least one of ethylene-vinyl acetate, styrene-acrylate, and butadiene-styrene latex; The mineral admixture includes at least one of the following: fly ash, silica fume, zeolite powder, finely ground quartz sand, hard slag, and granulated blast furnace slag powder; The setting regulator is tartaric acid, the rheology modifier includes defoamer and stabilizer, and the fiber reinforcement material includes at least one of polypropylene fiber, basalt fiber, polyvinyl alcohol fiber and steel fiber.
2. The composite formation modified cement-based grouting material according to claim 1, characterized in that: The redispersible latex powder comprises 40% ethylene-vinyl acetate and 60% butadiene-styrene latex; the mineral admixture comprises 30% silica fume, 40% finely ground quartz sand and 30% granulated blast furnace slag powder; the stabilizer is methylcellulose, the defoamer is methyl silicone oil, and the rheology modifier comprises 65% methylcellulose and 35% methyl silicone oil; the fiber reinforcement material comprises 60% basalt fiber, 25% polyvinyl alcohol fiber and 15% steel fiber.
3. A preparation apparatus for a composite formation modified cement-based grouting material, characterized in that, A composite formation modified cement-based grouting material used in the above-mentioned applications includes: The main body of the mixing tank (2) is fixedly installed with a protective tank cover (4) at its top. A mixing main shaft (8) for mixing cement-based grouting materials is rotatably installed in the middle of the protective tank cover (4). Multiple sets of mixing and stirring blades (10) are welded at equal intervals on the outer wall of the mixing main shaft (8). A rotating ring frame (16) is rotatably installed inside the protective tank cover (4), and multiple connecting rods (18) are equidistantly connected at the bottom end. A spiral arc rod (19) is welded between two adjacent connecting rods (18). A spiral wall cleaning scraper (20) for cleaning the inner wall of the mixing tank body (2) is fixedly installed on the outer wall of the spiral arc rod (19). A fixed connecting ring (21) is fixedly connected at the bottom end of the multiple connecting rods (18). A cross support frame (22) is fixed on the inner wall of the fixed connecting ring (21). The cross support frame (22) is rotatably connected to the lower part of the mixing main shaft (8). An internal gear ring (17) is fixedly installed on the lower part of the inner wall of the rotating ring frame (16). Multiple planetary gears (11) are equidistantly meshed on the inner wall of the internal gear ring (17). Multiple planetary gears (11) are meshed with a drive gear (9). The drive gear (9) is fixedly installed on the middle part of the outer wall of the mixing spindle (8).
4. The apparatus for preparing a composite formation modified cement-based grouting material according to claim 3, characterized in that: The outer wall of the rotating ring frame (16) is fixedly installed with a mounting bearing (15), and the outer wall of the mounting bearing (15) is fixedly installed with a fixing mounting ring (14), which is fixedly installed on the upper part of the inner wall of the protective tank cover (4).
5. The apparatus for preparing a composite formation modified cement-based grouting material according to claim 3, characterized in that: A gear mounting shaft (12) is rotatably mounted in the middle of the planetary gear (11), and a mounting ring frame (13) is fixedly connected to the top of multiple gear mounting shafts (12). The mounting ring frame (13) is fixedly mounted on the inner wall of the top of the protective tank cover (4).
6. The apparatus for preparing a composite formation modified cement-based grouting material according to claim 3, characterized in that: The bottom end of the mixing tank body (2) is integrally formed with a discharge mounting cylinder (23). A discharge limiting cylinder (24) is fixedly installed inside the discharge mounting cylinder (23). Multiple discharge channels (25) are equidistantly opened on the top of the outer wall of the discharge limiting cylinder (24), and a discharge guide cylinder (26) is slidably installed inside the discharge limiting cylinder (24).
7. The apparatus for preparing a composite formation modified cement-based grouting material according to claim 6, characterized in that: The lower part of the outer wall of the discharge guide cylinder (26) is fixedly connected to a limiting connecting ring (29). The top of the limiting connecting ring (29) is provided with a sealing rubber ring (30), and the bottom of the limiting connecting ring (29) is fixedly connected with multiple guide slide rods (31) at equal intervals.
8. The apparatus for preparing a composite formation modified cement-based grouting material according to claim 7, characterized in that: The bottom outer wall of the guide slide rod (31) is slidably connected to a guide ring seat (32), the bottom inner wall of the guide ring seat (32) is fixedly connected to a discharge connecting pipe (33), and the outer wall of the guide ring seat (32) is fixedly connected to a fixed plate frame (34).
9. The apparatus for preparing a composite formation modified cement-based grouting material according to claim 8, characterized in that: The top of the fixed plate frame (34) is fixedly installed with multiple mounting connecting columns (35) at equal intervals, and the mounting connecting columns (35) are fixedly installed at the bottom end of the discharge limiting cylinder (24).
10. The apparatus for preparing a composite formation modified cement-based grouting material according to claim 6, characterized in that: The bottom outer wall of the discharge guide cylinder (26) is symmetrically welded with two positioning mounting pins (36). The end of the positioning mounting pin (36) is fixedly mounted with a lifting connecting arm (37). The bottom end of the mixing tank body (2) is fixedly mounted with a cylinder mounting bracket (27). The bottom end of the cylinder mounting bracket (27) is symmetrically mounted with two linked lifting cylinders (28). The telescopic end of the lifting cylinder (28) is fixedly connected to the lifting connecting arm (37).