Porous mixed grouting device capable of quickly blocking high-permeability water and construction method of porous mixed grouting device

Abstract

The invention provides a porous mixed grouting device capable of quickly plugging high-permeability water and a construction method thereof.The porous mixed grouting device comprises a connecting main pipe, a cement grout pump station and a plurality of chemical grout pump stations, and the cement grout pump station is communicated with the connecting main pipe by arranging a cement grout grouting pipe; the chemical grout pump stations are communicated with the connecting main pipe through chemical grout inlet pipes, the number of the chemical grout inlet pipes corresponds to that of the chemical grout pump stations in a one-to-one mode, valves are independently arranged on the cement grout injection pipe and each chemical grout inlet pipe respectively, and the lower portion of the connecting main pipe is communicated with a grout mixing main pipe. A stirring mechanism is arranged in the connecting main pipe and the slurry mixing main pipe, the lower end of the slurry mixing main pipe is communicated with a plurality of slurry jetting thin pipes, the cement slurry pump station and the chemical slurry pump stations are arranged, valves are independently arranged, the mixing proportion of multiple kinds of slurry is effectively and accurately controlled, and the material cost and the plugging effect are optimized; and rapid curing and efficient plugging are realized.

Description

Technical Field

[0001] The invention relates to the field of tunnel engineering, and in particular to a porous mixed grouting device for quickly blocking high-permeability water and a construction method thereof. Background Art

[0002] In underground projects such as deep buried long tunnels, the problem of high permeability water is a major challenge. Especially in high-pressure water-rich areas, such as karst areas, water gushing and mud bursting are often encountered, which seriously affect the progress and safety of the project. The existing technologies mainly include traditional cement slurry grouting, chemical slurry grouting and other methods. These methods have problems such as low efficiency, long reaction time and high cost when dealing with large-flow, high-pressure water gushing. Under the scouring of high-velocity water flow, the traditional cement slurry grouting technology often fails to seal because the slurry solidifies too slowly. Although the chemical slurry has a fast reaction speed, its material cost and environmental risks are high under complex geological conditions, which limits its scope of application. In addition, the traditional grouting device usually has a single slurry inlet pipe, which makes it difficult to achieve precise mixing of multiple slurries, resulting in unstable sealing effect. This deficiency is particularly prominent in high-permeability and high-water pressure environments. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a porous mixed grouting device for quickly plugging high-permeability water, which can solve the problems of easy plugging failure and high cost of traditional single grouting technology.

[0004] To this end, the present invention adopts the following technical solutions: A porous mixed grouting device for quickly plugging high-permeability water comprises a connecting main pipe, a cement slurry pumping station and a plurality of chemical slurry pumping stations, wherein the cement slurry pumping station is connected to the connecting main pipe by arranging a cement slurry grouting pipe, and the chemical slurry pumping station is connected to the connecting main pipe by arranging a chemical slurry inlet pipe, the number of the chemical slurry inlet pipes corresponds to the chemical slurry pumping stations one by one, valves are separately arranged on the cement slurry grouting pipe and each of the chemical slurry inlet pipes, the lower part of the connecting main pipe is connected to a slurry mixing main pipe, stirring mechanisms are arranged in the connecting main pipe and the slurry mixing main pipe, and the lower end of the slurry mixing main pipe is connected to a plurality of grouting capillary tubes.

[0005] On the basis of adopting the above technical solutions, the present invention may also adopt the following further technical solutions, or use these further technical solutions in combination: The outside of the slurry mixing main pipe is connected with a membrane bag, the membrane bag is sealed at the top and the bottom, and a water filling pipe is inserted at one side of the membrane bag.

[0006] The stirring mechanism includes a connecting rod and a spiral fan blade, one end of the connecting rod is connected to the bottom of the slurry mixing main pipe, the other end of the connecting rod is located outside the connecting main pipe, and the spiral fan blade is fixed to the lower part of the connecting rod and is located inside the slurry mixing main pipe.

[0007] A connection plate is fixed to the lower end circumference of the connecting main pipe and the upper end circumference of the slurry mixing main pipe respectively, and the two connection plates are fixedly connected by locknuts.

[0008] The diameter of the connecting main pipe is greater than the diameter of the slurry mixing main pipe.

[0009] The cross section of the connecting rod is T-shaped.

[0010] The purpose of the present invention is also to overcome the deficiencies of the above-mentioned prior art and provide a construction method for a porous mixed grouting device that quickly blocks high-permeability water, which can solve the problems of easy blocking failure and high cost of traditional single grouting technology.

[0011] To this end, the present invention adopts the following technical solutions: A construction method of a porous mixed grouting device for quickly blocking high-permeability water comprises the following steps: 1. Installation of grouting pump station: According to the specific conditions of the construction site, install cement slurry pump station and chemical slurry pump station, and set appropriate grouting pressure and flow parameters respectively; 2. Layout of the pipeline system: Use cement slurry injection pipe and chemical slurry inlet pipe to connect the cement slurry pump station and chemical slurry pump station to the connecting main pipe respectively; 3. Arrangement of grouting pipe: Drill a hole at the grouting location in advance, and insert the slurry mixing main pipe, membrane bag and grouting capillary pipe into the drilled hole; 4. Application of membrane bag: Before slurry injection, water is injected into the membrane bag through the water filling pipe. After the membrane bag is filled with water, it expands into a cylinder to achieve the sealing of the membrane bag hole; 5. Preparation of slurry: According to the specific needs of the project, adjust the ratio of cement slurry to chemical slurry, control the flow of base liquid through valves and accurately control the amount of chemical slurry; 6. Slurry mixing: After the cement slurry and chemical slurry are initially mixed in the connecting pipe, they enter the slurry mixing pipe. The connecting rod is manually rotated to drive the spiral fan blades to rotate and stir the mixed slurry to achieve full mixing of the slurry; 7. High-pressure grouting: The pressure generated by the cement slurry pumping station and the chemical slurry pumping station injects the mixed slurry into the rock cracks through the grouting pipe.

[0012] Compared with the prior art, the present invention effectively and accurately controls the mixing ratio of multiple slurries by setting up a cement slurry pumping station and several chemical slurry pumping stations and separately setting valves for each of them, optimizes material cost and plugging effect, and realizes rapid solidification and efficient plugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention. DETAILED DESCRIPTION

[0014] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred implementation scheme of the present invention is described below in conjunction with specific embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent elements with the same or similar functions. However, it should be understood that the drawings are only used for illustrative purposes and cannot be understood as limitations on the present invention. In order to better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted, and the positional relationship described in the drawings is only used for illustrative purposes and cannot be understood as limitations on the present invention.

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0016] The present invention provides a porous mixed grouting device for quickly blocking high-permeability water, comprising a connecting main pipe 3, a cement slurry pumping station 1 and a plurality of chemical slurry pumping stations 2. The cement slurry pumping station 1 is connected to the connecting main pipe 3 by arranging a cement slurry grouting pipe 4, and the chemical slurry pumping station 2 is connected to the connecting main pipe 3 by arranging a chemical slurry inlet pipe 5. The number of chemical slurry inlet pipes 5 corresponds to the number of chemical slurry pumping stations 2. Valves 6 are separately arranged on the cement slurry grouting pipe 4 and each chemical slurry inlet pipe 5. The lower part of the connecting main pipe 3 is connected to a slurry mixing main pipe 7. A stirring mechanism is arranged in the connecting main pipe 3 and the slurry mixing main pipe 7. The lower end of the slurry mixing main pipe 7 is connected to a plurality of grouting capillaries 8.

[0017] The grouting pressure is set by setting a cement slurry pumping station and several chemical slurry pumping stations 2, so that the mixed slurry can be sprayed into the high-pressure water-rich rock formation through the grouting capillary 8 to achieve water blocking; the flow rate and proportion of the cement slurry are controlled by setting a cement slurry pumping station 1 and its valve 6, so as to achieve the base liquid content in the mixed slurry, and the flow rate and proportion of the chemical slurry are controlled by setting a chemical slurry pumping station 2 and its valve 6, so as to achieve precise mixing of different chemical slurries.

[0018] All the slurries are preliminarily mixed in the connecting main pipe 3 and finally mixed in the slurry mixing main pipe 7.

[0019] like Figure 1 As shown, in this embodiment, five chemical slurry pumping stations 2 are set up. Correspondingly, one side of each chemical liquid pumping station 2 is connected to a chemical slurry inlet pipe 5. During actual construction, the number of chemical slurry pumping stations 2 can be calculated and set according to actual needs.

[0020] The outside of the slurry mixing main pipe 7 is connected to a membrane bag 9 , which is sealed at the top and bottom, and a water filling pipe 14 is inserted into one side of the membrane bag 9 .

[0021] In this embodiment, the upper and lower ends of the membrane bag 9 are tightly tied to the outside of the slurry mixing main pipe 7 with cable ties, and the water filling pipe 14 is used to fill water into the membrane bag 9 before grouting. After the membrane bag 9 is filled with water, it expands into a cylinder and seals the drill hole, so that the mixed slurry ejected from the grouting tube 8 does not overflow.

[0022] The stirring mechanism includes a connecting rod 10 and a spiral fan blade 11. One end of the connecting rod 10 is connected to the bottom of the slurry mixing main pipe 7, and the other end of the connecting rod 10 is located outside the connecting main pipe 3. The spiral fan blade 11 is fixed to the lower part of the connecting rod 10 and is located inside the slurry mixing main pipe 7.

[0023] like Figure 1 As shown, the connecting rod 10 is located in the middle of the connecting main pipe 3 , and the connecting main pipe 3 and the slurry mixing main pipe 7 are coaxially arranged. In this embodiment, the spiral blades 11 are welded to the connecting rod 10 .

[0024] In this embodiment, the spiral fan blade 11 may be a spiral blade.

[0025] A connection plate 12 is fixed to the lower end circumference of the connecting main pipe 2 and the upper end circumference of the slurry mixing main pipe 7 , respectively. The two connection plates 12 are fixedly connected by lock nuts 13 .

[0026] In this embodiment, the connecting plate 12 is an annular fixing plate.

[0027] The diameter of the connecting main pipe 3 is greater than the diameter of the slurry mixing main pipe 7 .

[0028] The cross section of the connecting rod 10 is T-shaped. Manually rotating the connecting rod 10 drives the spiral blades 11 to rotate, thereby stirring and mixing the slurry.

[0029] A construction method of a porous mixed grouting device for quickly blocking high-permeability water comprises the following steps: 1. Installation of grouting pump station: According to the specific conditions of the construction site, install cement slurry pump station 1 and chemical slurry pump station 2, and set appropriate grouting pressure and flow parameters respectively; 2. Layout of the pipeline system: Use cement slurry grouting pipe 4 and chemical slurry inlet pipe 5 to connect cement slurry pump station 1 and chemical slurry pump station 2 to connecting main pipe 3 respectively to ensure the stability and sealing of all pipelines; 3. Arrangement of grouting pipe: Drill a hole at the grouting position in advance, and insert the slurry mixing main pipe 7, membrane bag 9 and grouting capillary pipe 8 into the borehole; 4. Application of membrane bag: Before slurry injection, water is injected into the membrane bag 9 through the water filling pipe 14. After the membrane bag 9 is filled with water, it expands into a cylinder to achieve the sealing of the membrane bag; 5. Preparation of slurry: According to the specific needs of the project, adjust the ratio of cement slurry to chemical slurry, control the flow of base liquid through valve 6 and accurately control the amount of chemical slurry; 6. Slurry mixing: After the cement slurry and the chemical slurry are preliminarily mixed in the connecting pipe 3, they enter the slurry mixing pipe 7, and the connecting rod 10 is manually rotated to drive the spiral blade 11 to rotate, stirring the mixed slurry to achieve full mixing of the slurry; 7. High-pressure grouting: The pressure generated by the cement slurry pump station 1 and the chemical slurry pump station 2 injects the mixed slurry into the rock formation cracks through the grouting pipe 8.

[0030] Verification and adjustment after construction is completed Effect inspection: After completing the initial grouting, check the sealing effect and adjust the grouting parameters or repeat the grouting steps if necessary.

[0031] Parameter adjustment: According to the actual plugging effect and geological feedback, adjust the slurry mixing ratio or grouting pressure to ensure the final plugging quality and effect According to the description and drawings of the present invention, those skilled in the art can easily manufacture or use the porous mixed grouting device for quickly blocking high-permeability water of the present invention, and can produce the positive effects described in the present invention.

[0032] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internally connected between two mechanisms, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0033] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "inside", "horizontal", "end", "length", "outer end", "left", "right" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the mechanism or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. The terms "first" and "second" are also used only for simplicity of description, and do not indicate or imply relative importance.

[0034] Furthermore, in practicing the claims of the present invention, those skilled in the art can understand and effect variations to the disclosed embodiments by studying the drawings, the disclosure and the appended claims. In addition, in the claims and the specification, the words "comprise", "contain" and the like do not exclude other elements or steps, and non-plural nouns do not exclude their plural forms.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the present invention are covered by the scope of the claims of the present invention and will not be listed one by one here.

Claims

1. A porous mixed grouting device for quickly blocking high-permeability water, characterized in that: The invention comprises a connecting main pipe (3), a cement slurry pump station (1) and a plurality of chemical slurry pump stations (2); the cement slurry pump station (1) and the connecting main pipe (3) are connected by a cement slurry injection pipe (4); the chemical slurry pump station (2) and the connecting main pipe (3) are connected by a chemical slurry inlet pipe (5); the number of the chemical slurry inlet pipes (5) corresponds to the number of the chemical slurry pump stations (2); a valve (6) is separately provided on the cement slurry injection pipe (4) and each of the chemical slurry inlet pipes (5); the lower part of the connecting main pipe (3) is connected to a slurry mixing main pipe (7); a stirring mechanism is provided in the connecting main pipe (3) and the slurry mixing main pipe (7); and the lower end of the slurry mixing main pipe (7) is connected to a plurality of slurry injection capillaries (8).

2. A porous mixed grouting device for rapidly blocking high-permeability water according to claim 1, characterized in that: The outside of the slurry mixing main pipe (7) is connected to a membrane bag (9), the membrane bag (9) is sealed at the top and bottom, and a water filling pipe (14) is inserted into one side of the membrane bag (9).

3. A porous mixed grouting device for rapidly blocking high-permeability water according to claim 1, characterized in that: The stirring mechanism comprises a connecting rod (10) and a spiral blade (11), one end of the connecting rod (10) is connected to the bottom of the slurry mixing main pipe (7), the other end of the connecting rod (10) is located outside the connecting main pipe (3), and the spiral blade (11) is fixed to the lower part of the connecting rod (10) and is located inside the slurry mixing main pipe (7).

4. A porous mixed grouting device for rapidly blocking high-permeability water according to claim 1, characterized in that: A connecting plate (12) is fixed to the circumferential side of the lower end of the connecting main pipe (2) and the circumferential side of the upper end of the slurry mixing main pipe (7), respectively. The two connecting plates (12) are fixedly connected by means of locknuts (13).

5. A porous mixed grouting device for rapidly blocking high-permeability water according to claim 1, characterized in that: The diameter of the connecting main pipe (3) is greater than the diameter of the slurry mixing main pipe (7).

6. A porous mixed grouting device for rapidly blocking high-permeability water as claimed in claim 3, characterized in that: The cross section of the connecting rod (10) is T-shaped.

7. A construction method of a porous mixed grouting device for quickly blocking high-permeability water, characterized in that: The following steps are involved:

1. Installation of grouting pump station: According to the specific conditions of the construction site, install the cement slurry pump station (1) and the chemical slurry pump station (2), and set appropriate grouting pressure and flow parameters respectively; 2. Arrangement of the pipeline system: using a cement slurry injection pipe (4) and a chemical slurry inlet pipe (5) to connect the cement slurry pump station (1) and the chemical slurry pump station (2) to the connecting main pipe (3); 3. Arrangement of the grouting pipe: Drill a hole at the grouting location in advance, and insert the slurry mixing main pipe (7), the membrane bag (9) and the grouting capillary pipe (8) into the borehole; 4. Application of the membrane bag: Before slurry injection, water is injected into the membrane bag (9) through the water filling pipe (14). After the membrane bag (9) is filled with water, it expands into a cylinder, thereby sealing the membrane bag holes; 5. Preparation of slurry: According to the specific requirements of the project, adjust the ratio of cement slurry to chemical slurry, control the flow of base liquid through valve (6) and accurately control the amount of chemical slurry; 6. Slurry mixing: After the cement slurry and the chemical slurry are preliminarily mixed in the connecting pipe (3), they enter the slurry mixing pipe (7), and the connecting rod (10) is manually rotated to drive the spiral blade (11) to rotate and stir the mixed slurry to achieve full mixing of the slurry; 7. High-pressure grouting: The pressure generated by the cement slurry pump station (1) and the chemical slurry pump station (2) injects the mixed slurry into the rock formation cracks through the grouting pipe (8).

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