Grouting system capable of preventing plug winding
By using upper and lower grout stop plugs to separate boreholes in the grouting system, the problem of grout blockage in underground engineering is solved, grouting efficiency and engineering quality are improved, costs are reduced, and it is suitable for a variety of engineering applications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-27
AI Technical Summary
In underground engineering, grouting blockage is prone to occur and difficult to detect, which affects the quality and progress of the project. Existing anti-blockage measures also affect the quality or progress of the project.
The grouting system employing anti-swapping plugs includes an upper and lower grout stop plug, both of which are air-bag rubber structures. They separate the borehole into a grouting section and an anti-swapping plug section, and are connected to a pressure pump via a pressure pipeline to achieve effective separation of the borehole and control of the grout.
It reduces and avoids grout blockage, improves work efficiency, eliminates the need to extend the grout setting time, adapts to different grouting methods, reduces costs, is suitable for various soil conditions, and has a wide range of applications.
Smart Images
Figure CN224048155U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of grouting, especially to a grouting system capable of preventing plug winding. BACKGROUND
[0002] In underground engineering, grouting engineering is widely used in ground foundation reinforcement, micro pile, water stop curtain, settlement correction, etc. In order to achieve grouting effect, pressure grouting and circulating grouting are common grouting methods. In this application scenario, plug winding is a difficult problem, which is prone to occur and difficult to detect, and may lead to "plug burying" for a long time.
[0003] The grout plug winding is mainly caused by incomplete hole wall of grouting section, insufficient compression of rubber plug, unsealed crack during upper grouting, insufficient waiting time after grouting, and too low cement strength, etc. At present, the general method for preventing plug winding is to reduce the water-solid ratio of grout and increase the waiting time for grouting and setting, which brings adverse effects on engineering quality or progress. UTILITY MODEL CONTENTS
[0004] To solve the above problems, the utility model provides a grouting system capable of preventing plug winding and minimizing and avoiding the occurrence of plug winding, which specifically comprises:
[0005] A grouting system capable of preventing plug winding comprises:
[0006] A grouting pipeline, a pressure pump, an upper grouting plug, a lower grouting plug, and a pressure pipeline;
[0007] One end of the pressure pipeline is connected to the pressure pump, the pressure pipeline is sequentially connected to the upper grouting plug and the lower grouting plug, and the pressure pipeline is used for pressurizing the upper grouting plug and the lower grouting plug;
[0008] The upper grouting plug and the lower grouting plug are sleeved on the grouting pipeline, and the upper grouting plug is arranged above the lower grouting plug;
[0009] The upper grouting plug and the lower grouting plug are in the form of air bag rubber structure, and a drilling section between the upper grouting plug and the lower grouting plug is a plug winding prevention section.
[0010] Optionally, the system further comprises a mud pump and a mud pipeline;
[0011] The mud pipeline is connected to the mud pump, and the mud pipeline is inserted into a drilling hole and used for injecting mud into the plug winding prevention section.
[0012] Optionally, the system further comprises a stirring pool, a grouting pump, and a pressure gauge;
[0013] An inlet end of the grouting pipeline is connected to the grouting pump and the stirring pool;
[0014] The pressure gauge is arranged on the grouting pipeline.
[0015] Optionally, the upper grouting plug and the lower grouting plug have the same structure.
[0016] The upper stop plug comprises a hollow cylindrical rubber capsule, and the grouting pipe passes through the cylindrical center of the upper stop plug and the lower stop plug in sequence from top to bottom;
[0017] Or;
[0018] The upper stop plug comprises two identical annular rubber capsules, and the grouting pipe passes through the annular center of the upper stop plug and the lower stop plug in sequence from top to bottom.
[0019] Optionally, the upper stop plug and the lower stop plug are connected by a thread and a pressure pipe connection structure, or the upper stop plug and the lower stop plug are connected by an outer hoop and a pressure pipe connection structure.
[0020] Optionally, two interfaces are arranged on the upper stop plug, and the pressure pipe comprises a pressure pump, the upper stop plug and the lower stop plug connected by the interfaces.
[0021] Optionally, the pressure pipe is a steel wire rubber pipe.
[0022] Compared with the prior art, the above technical solution has at least the following beneficial effects:
[0023] The system has simple structure, and can reduce and avoid the phenomenon of slurry backflow around the plug during uplink grouting and downlink grouting.
[0024] The entire drilling hole is divided into a grouting section and a plug-avoiding section by the upper and lower stop plugs, without the need to prolong the slurry solidification waiting time, thereby improving the work efficiency.
[0025] The upper and lower stop plugs can be freely adjusted in position to adapt to uplink grouting and downlink grouting, and can adapt to sections that do not need to be grouted and sections that have been grouted, and can well adapt to the on-site soil layer conditions.
[0026] The plug-avoiding section can use bentonite mud to reduce the cost, or use grouting materials to reduce the process, and both can bring good economic benefits.
[0027] The device and the construction method can be used in grouting engineering in mining, highway, building and other industries, such as mine water stop curtain, roadbed, slope grouting reinforcement, building foundation reinforcement, micro pile and the like. The application scenarios are wide, and the device is simple and reliable. BRIEF DESCRIPTION OF DRAWINGS
[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.
[0029] Figure 1 is a structural schematic diagram of the system provided by the embodiment of the present application;
[0030] Figure 2 is a first embodiment of the upper and lower grout stoppers provided by the embodiment of the present application;
[0031] Figure 3 is a second embodiment of the upper and lower grout stoppers provided by the embodiment of the present application.
[0032] 101, stirring pool; 102, grouting pump; 103, pressure gauge; 104, grouting pipeline; 105, preset grouting section;
[0033] 201, pressure pump; 202, pressure pipeline; 203, upper grout stopper; 204, anti-winding stopper section; 205, lower grout stopper;
[0034] 301, grout pump; 302, downward grouting pipeline; 303, upward grouting pipeline. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort fall within the scope of protection of the present application.
[0036] Unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the usual meanings understood by those of ordinary skill in the art to which the present application belongs. The terms "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish different components. Similarly, "one", "an" or "the" and similar words do not represent a quantity limitation, but represent the existence of at least one. The words "including" or "containing" and similar words mean that the elements or objects before the words cover the elements or objects listed after the words and their equivalents, without excluding other elements or objects. The words "connected" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.
[0037] It should be noted that "up", "down", "left", "right", "front" and "back" and the like used in the present application are only used to represent relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0038] As Figure 1 shown, a grouting system for preventing the winding of the plug, comprising: a grouting pipeline 104, a pressure pump 201, an upper grouting plug 203, a lower grouting plug 205 and a pressure pipeline 202;
[0039] One end of the pressure pipeline 202 is connected with the pressure pump 201, and the pressure pipeline 202 is in turn communicated with the upper grouting plug 203 and the lower grouting plug 205, and the pressure pipeline 202 is used for charging pressure to the upper grouting plug 203 and the lower grouting plug 205;
[0040] The upper grouting plug 203 and the lower grouting plug 205 are sleeved on the grouting pipeline 104, and the upper grouting plug 203 is arranged above the lower grouting plug 205;
[0041] The upper grouting plug 203 and the lower grouting plug 205 are air bag type rubber structures, and the drill hole section between the upper grouting plug 203 and the lower grouting plug 205 is a plug winding prevention section 204.
[0042] In a specific embodiment, the upper grouting plug 203 and the lower grouting plug 205 are of the same structure; two interfaces are arranged on the upper grouting plug 203, and the pressure pipeline 202 comprises a pressure pump 201, an upper grouting plug 203 and a lower grouting plug 205 communicated through the interfaces. The pressure pipeline 202 is a steel wire rubber pipe. The upper grouting plug 203 and the lower grouting plug 205 are respectively connected with the pressure pipeline 202 through a thread and a connection structure, or the upper grouting plug 203 and the lower grouting plug 205 are respectively connected with the pressure pipeline 202 through an outer hoop and a connection structure.
[0043] As Figure 2 shown, in the first embodiment, the upper grouting plug 203 comprises a hollow cylindrical rubber capsule, and the grouting pipeline 104 passes through the cylindrical center of the upper grouting plug 203 and the lower grouting plug 205 in turn from top to bottom;
[0044] Figure 3 shown, in the first embodiment, the upper grouting plug 203 comprises two identical annular rubber capsules, and the grouting pipeline 104 passes through the annular center of the upper grouting plug 203 and the lower grouting plug 205 in turn from top to bottom.
[0045] The length between the upper grouting plug 203 and the lower grouting plug 205 is adjustable, the length of the grouting pipeline 104 between the two grouting plugs is adjusted, and the distance between the two grouting plugs is adjusted, and the distance between the two grouting plugs is equal to the required (also preset) length of the plug winding prevention section of the grouting plug section.
[0046] In the above embodiment, the grouting pipe 104 can be an actual pipe or a hollow drill pipe of a drilling machine. If it is a hollow drill pipe, the length between the upper and lower grouting plugs 203 and 205 can be adjusted after the drill pipe is removed. If it is a pipe, the corresponding length is adjusted before grouting.
[0047] In a specific embodiment, the system further comprises a mud pump 301, a mud pipe, the mixing pool 101, the grouting pump 102 and the pressure gauge 103.
[0048] The mud pipe is connected with the mud pump 301, and the mud pipe is inserted into the borehole and injects mud into the anti-whipping plug section 204. The system further comprises that the inlet end of the grouting pipe 104 is connected with the grouting pump 102 and the mixing pool 101, and the grouting pipe 104 is provided with the pressure gauge 103.
[0049] The grouting material in the grouting pipe 104 and the material of the mud pipe can be the same or different. When they are different, the mud is generally bentonite mud.
[0050] A grouting method of an anti-whipping plug, applied to the anti-whipping grouting system, comprises the following method.
[0051] The method comprises the following method.
[0052] An anti-whipping grouting system is built at the borehole.
[0053] The depth positions of the upper and lower grouting plugs and the length of the anti-whipping plug section between the two are set according to requirements.
[0054] After the grouting pipe is lowered to the specified depth, the pressure pump fills the upper and lower grouting plugs with pressure through the pressure pipe, so that the upper and lower grouting plugs abut against the inner wall of the borehole, the upper and lower ends of the preset anti-whipping plug section in the borehole are aligned with the upper and lower grouting plugs, and the mud pump injects mud into the anti-whipping plug section. At this time, the internal pressure of the grouting plug is greater than the grouting pressure of the mud section by 0.5-1 MPa.
[0055] The grouting pump injects grouting material into the preset grouting section in the borehole through the grouting pipe.
[0056] The method of injecting mud into the anti-whipping plug section by the mud pump comprises the following steps.
[0057] (1) When the grouting borehole depth is small and the grouting pipe does not need to be moved up and down, ① the anti-whipping plug section and the preset grouting section can be clearly distinguished, and mud can be directly injected into the anti-whipping plug section, while grouting material is injected into the grouting section.
[0058] If the whole length of the grouting drill hole is grouting section and no anti-swirl section is set, the grouting material is first normally injected in the anti-swirl section, and then the mud is injected, while the grouting material is injected in the grouting section below the lower grouting plug.
[0059] (2) When the grouting drill hole is deep and the grouting pipe needs to be moved up and down for sectional grouting, the steps of (1) ② can be repeated to complete the whole drill hole grouting. For example, when the grouting is performed by the top-down method, the steps of (1) ② can be repeated to complete the whole drill hole grouting.
[0060] When the mud is injected in the anti-swirl section, the grouting pressure is less than or equal to the grouting pressure of the grouting pipe, and according to the flow meter and the grouting pressure meter of the anti-swirl section, the radius of the injected mud cylinder is required to be greater than 0.3m-1m of the grouting pipe.
[0061] The pressure pump fills the upper grouting plug and the lower grouting plug with pressure A through the pressure pipe, and the grouting pressure of the grouting pipe is B, A=0.5-1MPa+B.
[0062] The specific principle of the method is as follows:
[0063] After the drill hole is completed, the grouting pipe is lowered, and two air bag type grouting plugs (the upper grouting plug 203 and the lower grouting plug 205) are arranged on the grouting pipe, and the pressure of the two grouting plugs is greater than the grouting pressure by 1Mpa.
[0064] The two grouting plugs are filled with gas or water, and the grouting plugs are tightly attached to the drill hole wall.
[0065] The preset grouting section 105 normally injects the grouting material;
[0066] The anti-swirl section 204 injects the bentonite mud or the grouting material, and the pressure of this section is equal to or slightly lower than the grouting pressure;
[0067] The above steps are repeated until the grouting is completed.
[0068] The system has simple structure, and can reduce and avoid the phenomenon of grout backflow and plug rotation during the uphole grouting and downhole grouting.
[0069] The whole drill hole is divided into the grouting section 105 and the anti-swirl section 204 by the upper grouting plug 203 and the lower grouting plug 205, the grouting solidification waiting time is not needed to be prolonged, and the working efficiency is improved.
[0070] The upper grouting plug 203 and the lower grouting plug 205 can be freely adjusted in position, can well adapt to the division demand of the grouting range by the soil layer conditions on site, and can adapt to the division of the non-grouting section, the grouting section and the grouted section during the uphole grouting and downhole grouting.
[0071] The anti-winding plug section 204 can adopt bentonite slurry to reduce cost, or adopt grouting material to reduce process, and better economic benefits can be brought.
[0072] The device and construction method can be used for grouting engineering in mining, highway, building and other industries, such as mine water stop curtain, roadbed, slope grouting reinforcement, building foundation reinforcement, micro pile and the like.
[0073] The following points need to be explained:
[0074] (1) The drawings of the embodiments of the utility model only involve the structures involved in the embodiments of the utility model, and other structures can refer to the usual design.
[0075] (2) In order to be clear, the thickness of the layer or area is enlarged or reduced in the drawings for describing the embodiments of the utility model, that is, the drawings are not drawn according to the actual proportion. It can be understood that when an element such as a layer, a film, an area or a substrate is referred to as being located on or under another element, the element can be directly located on or under another element or there can be an intermediate element.
[0076] (3) In the case of no conflict, the embodiments of the utility model and the features in the embodiments can be combined with each other to obtain new embodiments.
[0077] The above is only a specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, and the protection scope of the utility model should be subject to the protection scope of the claims.
Claims
1. A grout injection system for preventing the winding of a plug, characterized in that The utility model relates to a grouting device for drilling, comprising: a grouting pipe, a pressure pump, an upper grouting plug, a lower grouting plug and a pressure pipe; one end of the pressure pipe is connected to the pressure pump, the pressure pipe is in turn connected to the upper grouting plug and the lower grouting plug, and the pressure pipe is used to charge pressure to the upper grouting plug and the lower grouting plug; the upper grouting plug and the lower grouting plug are sleeved on the grouting pipe, and the upper grouting plug is arranged above the lower grouting plug; the upper grouting plug and the lower grouting plug are in the form of air bag rubber, and a drill hole section between the upper grouting plug and the lower grouting plug is a plug winding prevention section.
2. A grout system to prevent tampering with the plug as claimed in claim 1 wherein, The utility model further comprises: a mud pump and a mud pipe; the mud pipe is connected to the mud pump, the mud pipe is inserted into a drill hole, and mud is injected into the plug winding prevention section.
3. A tamper-evident grouting system according to claim 2, wherein, The utility model further comprises: a mixing pool, a grouting pump and a pressure gauge; an inlet end of the grouting pipe is connected to the grouting pump and the mixing pool; a pressure gauge is arranged on the grouting pipe.
4. The anti-pulling plug grouting system according to claim 1, wherein, The upper grouting plug and the lower grouting plug are of the same structure; the upper grouting plug comprises a hollow cylindrical rubber bag, and the grouting pipe passes through the cylindrical center of the upper grouting plug and the lower grouting plug in turn from top to bottom; alternatively; the upper grouting plug comprises two identical annular rubber bags, and the grouting pipe passes through the annular center of the upper grouting plug and the lower grouting plug in turn from top to bottom.
5. A tamper-evident grouting system according to claim 4, wherein, The upper grouting plug and the lower grouting plug are respectively connected to the pressure pipe through a thread and a connecting structure, or the upper grouting plug and the lower grouting plug are respectively connected to the pressure pipe through an outer hoop and a connecting structure.
6. A tamper-evident grouting system according to claim 5, wherein, Two interfaces are arranged on the upper grouting plug, and the pressure pipe comprises a pressure pump, the upper grouting plug and the lower grouting plug connected through the interfaces.
7. A tamper-evident grouting system according to claim 6, wherein, The pressure pipe is a steel wire rubber pipe.