Self-adaptive grouting equipment for karst cave and construction method

Abstract

The invention provides karst cave self-adaptive grouting equipment and a construction method, and relates to karst cave reinforcement. The device comprises a stirrer, a grouting pump, a caliber adjusting seat, a first liquid injection pipe, a pipe diameter adjusting seat and a second liquid injection pipe, the stirrer is provided with an accommodating cavity for accommodating slurry; the grouting pump is connected with the stirrer; the caliber adjusting seat is mounted at a liquid outlet of the grouting pump, and an extension layer is arranged on the inner wall of the first liquid injection pipe and is made of an elastic memory alloy material; the pipe diameter adjusting seat is arranged on the first liquid injection pipe, the second liquid injection pipe is made of elastic materials, and the second liquid injection pipe is connected with a liquid outlet of the first liquid injection pipe. The size of the liquid inlet of the first liquid injection pipe is dynamically adjusted through the caliber adjusting seat, and then the pipe diameter of the first liquid injection pipe is dynamically adjusted through the pipe diameter adjusting seat, so that the pipe diameter of the first liquid injection pipe can be matched with the preset grouting flow, the grouting efficiency is improved, the operation period is shortened, and the requirement for the slurry matching parameter is lower.

Description

Technical Field

[0001] The present application relates to the field of cave reinforcement, and specifically to a cave adaptive grouting equipment and construction method. Background Art

[0002] Karst caves and fissures refer to systems of karst caves and structural fractures formed by long-term groundwater dissolution and tectonic movement within soluble rock formations (such as limestone and dolomite). As a typical geological feature of karst landforms, these structures are often considered undesirable geological phenomena in the field of engineering geology. They can cause engineering safety hazards such as uneven foundation settlement, leakage, and even rock collapse, posing a potential threat to buildings, water conservancy facilities, and underground projects.

[0003] Grouting reinforcement technology, a key measure for engineering management in karst areas, works by injecting cement slurry or chemical slurry into cave and fissure systems to fill cavities and cement the broken rock mass. This improves foundation integrity, enhances bearing capacity, and blocks seepage channels, effectively addressing engineering stability issues in karst areas. Specialized grouting reinforcement devices, core equipment for geological disaster prevention and control and anti-seepage and leak plugging in underground projects, perform the critical function of grouting.

[0004] However, existing grouting equipment has obvious technical limitations: its delivery pipeline adopts a fixed diameter design, resulting in the slurry delivery efficiency being restricted by the inherent pipeline size and unable to be dynamically adjusted according to actual project needs. This defect is specifically manifested in the following ways: (1) it is difficult to flexibly adjust the grouting efficiency when dealing with caves and fissures of different sizes; (2) the operation cycle is significantly extended when dealing with large caves and fissures; (3) it places higher requirements on the slurry ratio parameters, seriously affecting the project economy and construction efficiency. Summary of the Invention

[0005] The purpose of this application is to provide a cave adaptive grouting equipment and construction method, which can dynamically adjust the grouting flow according to different crack sizes, improve the grouting efficiency, reduce the operation cycle, and have lower requirements on slurry ratio parameters.

[0006] In a first aspect, the present invention provides a cave adaptive grouting device, which includes a mixer, a grouting pump, a diameter adjustment seat, a first injection pipe, a pipe diameter adjustment seat, and a second injection pipe; The mixer is provided with a holding chamber for holding the slurry; The grouting pump is connected to the mixer; The caliber adjustment seat is installed at the liquid outlet of the grouting pump, and the caliber adjustment seat includes a plurality of expansion plates, the plurality of expansion plates enclose and define a liquid passage communicating with the liquid outlet, and the plurality of expansion plates expand outward or contract inward to adjust the flow area of ​​the liquid passage; The first liquid injection tube is sleeved on the expansion plate and communicated with the liquid passage, and an extension layer is provided on the inner wall of the first liquid injection tube, and the extension layer is made of elastic memory alloy material; The pipe diameter adjustment seat is arranged on the first liquid injection pipe, and the pipe diameter adjustment seat includes a seat body and multiple groups of adjustment components. The seat body is provided with an air cavity. The multiple groups of adjustment components are arranged in an annular manner around the first liquid injection pipe, and each group of adjustment components includes an air guide tube and an air guide rod. The air guide tubes are respectively connected to the seat body and the first liquid injection pipe, and the air guide tubes are communicated with the air cavity. The air guide rod is slidably arranged in the air guide tube, and one end of the air guide rod is fixedly connected to the extension layer. Under the action of the air guide rod, the diameter of the first liquid injection pipe is expanded or reduced; The second liquid injection pipe is made of elastic material, and the second liquid injection pipe is connected to the liquid outlet of the first liquid injection pipe.

[0007] In an optional embodiment, the aperture adjustment seat also includes a joint and a driving member, a transmission member, a rotating disk, an aperture baffle and a fixed disk installed in the joint, the transmission member is connected to the driving end of the driving member, the rotating disk is transmission-connected to the transmission member, a plurality of the aperture baffles define an installation position, the expansion plate is installed in the installation position, and each of the expansion plates is fixedly connected to one of the aperture baffles, and the fixed disk is movably connected to each of the aperture baffles.

[0008] In an optional embodiment, the transmission member includes a first gear and a second gear, the first gear is connected to the driving end of the driving member, the second gear is engaged with the first gear for transmission, and the rotating disk is mounted on the inner wall of the second gear.

[0009] In an optional embodiment, the rotating disk is provided with an arc-shaped groove and a flow hole, a plurality of the arc-shaped grooves are arranged around the flow hole, the flow hole is connected to the liquid channel, each of the aperture baffles is provided with a sliding block, and the sliding block on one aperture baffle is slidably connected to one of the arc-shaped grooves.

[0010] In an optional embodiment, the fixed disk is provided with a linear groove and a through hole, a plurality of the linear grooves are arranged around the through hole, the through hole is connected to the liquid passage, and each of the aperture baffles is also provided with a sliding block, the sliding block is located on the back of the sliding block, and the sliding block is slidably connected to one of the linear grooves.

[0011] In an optional embodiment, the pipe diameter adjustment seat also includes an air pump and an air valve, the air valve includes a valve body, an elastic member and a sealing member, a flow cavity connected to the air cavity is provided in the valve body, the elastic member is supported between the flow cavity and the sealing member, and the telescopic rod of the air pump is close to or away from the sealing member.

[0012] In an optional embodiment, the telescopic rod approaches and pushes the sealing member to move to open the flow cavity, and under the action of the air pump, the air guide rod moves in a direction away from the extension layer.

[0013] In an optional embodiment, the pipe diameter adjustment seat further includes an air pressure sensor, the air pressure sensor is arranged on the air pump, and the air pressure sensor is connected to the air pump signal.

[0014] In an optional embodiment, a grouting sealing seat is further included, and the grouting sealing seat is installed at the liquid outlet of the first liquid injection pipe.

[0015] In a second aspect, the present invention provides a cave adaptive grouting construction method, using the cave adaptive grouting equipment described in the aforementioned embodiment, the cave adaptive grouting construction method comprising: Inserting the second injection tube into the fissure of the cave; Calculate the grouting volume according to the size of the cracks and set the grouting flow rate accordingly; The diameter of the first liquid injection pipe is preset according to the grouting flow rate, and the pipe diameter adjustment seat is controlled to adjust the diameter of the first liquid injection pipe to the preset diameter; Control the caliber adjustment seat to match the flow area with the diameter of the first liquid injection pipe; Start the grouting pump, and the slurry flows from the mixer through the caliber adjustment seat, the first injection pipe, and then into the cracks from the second injection pipe; After the grouting is completed, the diameter of the first liquid injection pipe is restored to its original state, and the flow area of ​​the caliber adjustment seat is restored to its original state.

[0016] Compared with the prior art, the present invention has the following advantages: The present application dynamically adjusts the size of the liquid inlet of the first liquid injection pipe through the diameter adjustment seat, and then dynamically adjusts the diameter of the first liquid injection pipe through the diameter adjustment seat, so that the diameter of the first liquid injection pipe can match the preset grouting flow rate, improve the grouting efficiency, reduce the operation cycle, and have lower requirements on the slurry ratio parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a cave adaptive grouting device in some embodiments is shown; Figure 2Shown is a schematic diagram of the three-dimensional structure of the caliber adjustment seat in some embodiments; Figure 3 Shows a cross-sectional schematic diagram of the caliber adjustment seat in some embodiments; Figure 4 Shows an exploded schematic diagram of the caliber adjustment seat in some embodiments; Figure 5 A schematic diagram showing the connection between the first liquid injection tube and the tube diameter adjustment seat in some embodiments is shown; Figure 6 Shown Figure 5 A magnified view of part A; Figure 7 Shown Figure 1 Enlarged view of part B in the middle.

[0019] Description of main component symbols: 100-mixer; 200-grouting pump; 300-caliber adjustment seat; 310-connector; 320-driving member; 330-transmission member; 331-first gear; 332-second gear; 340-rotating plate; 341-arc groove; 342-flow hole; 350-caliber baffle; 351-sliding block; 360-fixed plate; 361-linear groove; 362-through hole; 370-expansion plate; 400- An injection tube; 410-extension layer; 500-tube diameter adjustment seat; 510-seat body; 511-air cavity; 520-adjustment component; 521-air guide tube; 522-air guide rod; 530-air pump; 531-telescopic rod; 540-air valve; 541-valve body; 5411-circulation cavity; 542-elastic part; 543-sealing element; 550-air pressure sensor; 600-second injection tube; 700-grouting sealing seat. DETAILED DESCRIPTION

[0020] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0023] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0024] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0025] Example 1 This embodiment is suitable for crack reinforcement of caves. The raw material for reinforcement is cement slurry or chemical slurry. In this embodiment, these two slurries are collectively referred to as slurry.

[0026] See also Figure 1This embodiment provides a cave adaptive grouting device, which includes a mixer 100, a grouting pump 200, a diameter adjustment seat 300, a first injection pipe 400, a pipe diameter adjustment seat 500 and a second injection pipe 600.

[0027] The mixer 100 is provided with a holding chamber for holding the slurry. In this embodiment, the mixer 100 can be set to include a tank body and a motor. The tank body is provided with the above-mentioned holding chamber, the upper part of the holding chamber is open, the motor is installed above the tank body, and the rotating shaft of the motor extends into the holding chamber to stir the slurry.

[0028] After the slurry raw materials are placed into the holding chamber according to the proportion, the motor is started to stir and mix. Under the continuous stirring of the motor, the slurry is prevented from sedimentation and coagulation, and the workability of the slurry is maintained.

[0029] In this embodiment, the upper opening of the accommodating cavity can also be set as a material injection port, and a material discharge port is provided at the bottom of the tank body.

[0030] The grouting pump 200 is connected to the mixer 100 . Specifically, the grouting pump 200 is connected to the discharge port of the tank body. The grouting pump 200 is started to extract the slurry. The extraction flow rate of the slurry can be dynamically controlled by the grouting pump 200 .

[0031] See also Figure 1 and Figure 2 The caliber adjustment seat 300 is installed at the liquid outlet of the grouting pump 200, and the caliber adjustment seat 300 includes a plurality of expansion plates 370, which enclose and define a liquid passage connected to the liquid outlet, and the plurality of expansion plates 370 expand outward or contract inward to adjust the flow area of ​​the liquid passage.

[0032] See also Figures 2 to 4 The aperture adjustment seat 300 also includes a joint 310 and a driving member 320, a transmission member 330, a rotating disk 340, an aperture baffle 350 and a fixed disk 360 installed in the joint 310, the transmission member 330 is connected to the driving end of the driving member 320, the rotating disk 340 is in transmission connection with the transmission member 330, a plurality of aperture baffles 350 define an installation position, an expansion plate 370 is installed in the installation position, and each expansion plate 370 is fixedly connected to a aperture baffle 350, and the fixed disk 360 is movably connected to each aperture baffle 350.

[0033] The transmission member 330 includes a first gear 331 and a second gear 332. The first gear 331 is connected to the driving end of the driving member 320, and the second gear 332 is engaged with the first gear 331 for transmission. The number of teeth of the second gear 332 is greater than the number of teeth of the first gear 331, and the diameter of the second gear 332 is greater than the diameter of the first gear 331. The rotating disk 340 is installed on the inner wall of the second gear 332.

[0034] The rotating disk 340 is provided with an arcuate groove 341 and a flow hole 342. A plurality of arcuate grooves 341 are arranged around the flow hole 342. The flow hole 342 is connected to the liquid passage. Each aperture baffle 350 is provided with a sliding block 351. The sliding block 351 on one aperture baffle 350 is slidably connected to one arcuate groove 341.

[0035] The fixed disk 360 is provided with a linear groove 361 and a through hole 362. A plurality of linear grooves 361 are arranged around the through hole 362. The through hole 362 is connected to the liquid passage. Each aperture baffle 350 is also provided with a sliding block (not shown in the figure). The sliding block is located on the back of the sliding block 351 and is slidably connected to a linear groove 361.

[0036] The areas of the through hole 362 and the flow hole 342 are larger than the flow channel, and the area exceeding the flow channel is blocked by the aperture baffle 350.

[0037] It can be understood that the fixed disk 360 serves as an installation component of the caliber adjustment seat 300, starts the driving member 320, the driving member 320 drives the transmission member 330 to move, the transmission member 330 drives the rotating disk to rotate relative to the joint 310, the sliding block 351 slides relative to the arc groove 341, the sliding block slides relative to the straight groove 361, and multiple expansion plates 370 open outward, that is, the distance between adjacent expansion plates 370 becomes larger, and the flow area becomes larger.

[0038] On the contrary, when the driving member 320 is started in the reverse direction, the plurality of expansion plates 370 are contracted inwardly, and the flow area is reduced.

[0039] The increase and decrease in the flow area depends on the rotation stroke of the rotating disk. For example: with the adjacent expansion plates 370 adjacent to each other as the original state, the rotating disk has a first rotation stroke and a second rotation stroke, and the second rotation stroke is greater than the first rotation stroke. Therefore, compared with the first rotation stroke, the flow area after the second rotation stroke is larger.

[0040] In this embodiment, the driving member 320 is configured as a motor, and the arc groove 341 and the straight groove 361 are arranged in opposite directions. Figure 4 From the current perspective, the arcuate grooves 341 are arranged clockwise and the straight grooves 361 are arranged counterclockwise.

[0041] Taking an arc groove 341 as an example, the center of the rotating disk is defined as the center of the circle, the distance between the left end of the arc groove 341 and the center of the circle is defined as the first distance, and the distance between the right end of the arc groove 341 and the center of the circle is defined as the second distance, and the second distance is greater than the first distance.

[0042] Taking a linear slot 361 as an example, the center of the fixed plate 360 ​​is defined as the center of the circle, the distance between the left end of the linear slot 361 and the center of the circle is defined as the third distance, and the distance between the right end of the linear slot 361 and the center of the circle is defined as the fourth distance. The fourth distance is smaller than the third distance.

[0043] This design enables the aperture baffle 350 to swing under the drive of the rotating disk 340, that is, the two ends of the aperture baffle 350 move in opposite directions. It can be understood that no matter how the aperture baffle 350 moves, the aperture baffle 350 can block the slurry, that is, the slurry can only flow out of the flow channel.

[0044] See also Figure 1 and Figure 2 The first liquid injection pipe 400 is sleeved on the expansion plate 370 and communicated with the liquid passage.

[0045] See also Figure 4 and Figure 5 The inner wall of the first injection tube 400 is provided with an extension layer 410, which is made of elastic memory alloy material. The shape change of the extension layer 410 can drive the diameter adjustment of the first injection tube 400 to match different grouting efficiency requirements.

[0046] When the expansion plate 370 expands outward, the extension layer 410 is stretched open by force. At this time, the injection port of the first injection tube 400 is stretched open and its diameter becomes larger.

[0047] When the expansion plate 370 contracts inward, the extension layer 410 recovers to its original state due to the properties of the memory alloy. At this time, the injection port of the first injection pipe 400 recovers to its original state.

[0048] See also Figures 5 to 7 The tube diameter adjustment seat 500 is arranged on the first liquid injection tube 400 , and the tube diameter adjustment seat 500 includes a seat body 510 and multiple groups of adjustment components 520 .

[0049] The seat body 510 is provided with an air cavity 511 , which supports the first liquid injection tube 400 to a certain extent, thereby preventing the first liquid injection tube 400 from directly contacting the ground and reducing the risk of the first liquid injection tube 400 being scratched by foreign objects.

[0050] Specifically, the seat body is configured to be a high-strength alloy with good supporting force, and a slot is provided in the seat body to serve as a movable space for the first liquid injection tube 400.

[0051] Multiple groups of adjustment components 520 are arranged around the first liquid injection tube 400, and each group of adjustment components 520 includes an air guide tube 521 and an air guide rod 522. The air guide tube 521 is respectively connected to the seat body 510 and the first liquid injection tube 400, and the air guide tube 521 is connected to the air cavity 511. The air guide rod 522 is slidably arranged in the air guide tube 521, and one end of the air guide rod 522 is fixedly connected to the extension layer 410. Under the action of the air guide rod 522, the diameter of the first liquid injection tube 400 is expanded or reduced.

[0052] The air guide tube 521 provides support and guidance for the air guide rod 522 , facilitating the air guide rod 522 to move toward or away from the first liquid injection tube 400 .

[0053] The pipe diameter adjustment seat 500 also includes an air pump 530 and an air valve 540 installed on the seat body 510. The air valve 540 includes a valve body 541, an elastic member 542 and a sealing member 543. A flow cavity 5411 connected to the air cavity 511 is provided in the valve body 541. The elastic member 542 is supported between the flow cavity 5411 and the sealing member 543. The telescopic rod 531 of the air pump 530 approaches or moves away from the sealing member 543.

[0054] The telescopic rod 531 approaches and pushes the sealing member 543 to open the flow cavity 5411. Under the action of the air pump 530, the air guide rod 522 moves in a direction away from the extension layer 410. The extension layer 410 expands outward under the pull of the air guide rod 522, thereby expanding the diameter of the first liquid injection tube 400.

[0055] The telescopic rod 531 moves away from the sealing member 543 to close the flow chamber 5411. Under the action of the airless pump 530, the extension layer 410 recovers to its original state due to the properties of its memory alloy. The air guide rod 522 moves toward the extension layer 410. At this time, the diameter of the first liquid injection tube 400 returns to its original state.

[0056] The pipe diameter adjustment base 500 also includes an air pressure sensor 550, which is disposed on the air pump 530 and is signal-connected to the air pump 530. Specifically, a main control unit is disposed on the air pump 530 and signal-connected to the air pressure sensor 550. The air pressure sensor 550 sends a pressure signal to the main control unit so that the main control unit can dynamically adjust the power of the air pump 530.

[0057] See also Figure 4 and Figure 5 In order to improve the automation level of this embodiment, the main control unit is also connected to the drive member 320 signal, so that the diameter of the injection port of the first injection pipe 400 is adapted to the diameter of the first injection pipe 400, thereby improving the grouting efficiency.

[0058] Please continue reading Figure 1In this embodiment, the number of the tube diameter adjustment seats 500 can be set to multiple, and the multiple tube diameter adjustment seats 500 are arranged at intervals along the length direction of the first liquid injection tube 400.

[0059] The second injection pipe 600 is made of an elastic material and is connected to the liquid outlet of the first injection pipe 400. In this embodiment, the second injection pipe 600 serves as the liquid outlet of the cave adaptive grouting device. By setting the second injection pipe 600 to an elastic material, the flow rate of the first injection pipe 400 and the second injection pipe 600 is matched, thereby improving the grouting efficiency.

[0060] This embodiment also includes a grouting sealing seat 700, which is installed at the liquid outlet of the first liquid injection pipe 400 to ensure the sealing during the grouting process, prevent slurry leakage, and ensure the stability and safety of the grouting process.

[0061] This embodiment realizes automatic adaptation of the caliber and slurry discharge flow of the first injection pipe 400 and the second injection pipe 600 through closed-loop control of "pressure detection-pneumatic drive-mechanical adjustment", thereby improving the intelligent level of grouting.

[0062] Based on the above content, using the above-mentioned cave adaptive grouting equipment, this embodiment further describes the cave adaptive grouting construction method as follows: S100. Insert the second injection tube 600 into the crack of the cave.

[0063] S200. Calculate the grouting amount according to the size of the crack, and set the grouting flow rate according to the grouting amount.

[0064] S300. Preset the diameter of the first liquid injection pipe 400 according to the grouting flow rate, control the pipe diameter adjustment seat 500, and adjust the diameter of the first liquid injection pipe 400 to the preset diameter.

[0065] S400 . Control the caliber adjustment seat 300 to match the flow area with the diameter of the first liquid injection pipe 400 .

[0066] S500. Start the grouting pump 200, and the slurry flows from the mixer 100 through the caliber adjustment seat 300, the first injection pipe 400, and is injected into the cracks from the second injection pipe 600.

[0067] Before starting the grouting pump 200, the slurry raw materials need to be stirred and mixed in the mixer 100 according to certain ratio parameters. Different ratio parameters will affect the viscosity of the slurry. For slurries with higher viscosity, the grouting flow rate should be reduced and the grouting should be done slowly. For slurries with higher viscosity, the grouting flow rate should be increased and the grouting should be done quickly.

[0068] Therefore, this embodiment has the function of adaptively adjusting the grouting flow rate, and can meet the grouting construction requirements of slurries with different viscosities.

[0069] S600. After the grouting is completed, the diameter of the first liquid injection pipe 400 is restored to its original state, and the flow area of ​​the caliber adjustment seat 300 is restored to its original state.

[0070] It is understandable that during the grouting process, steps S300 and S400 can be performed at any time to dynamically adjust the grouting flow rate.

[0071] In this embodiment, the size of the liquid inlet of the first liquid injection pipe 400 is dynamically adjusted by the diameter adjustment seat 300, and the diameter of the first liquid injection pipe 400 is then dynamically adjusted by the diameter adjustment seat 500, so that the diameter of the first liquid injection pipe 400 can match the preset grouting flow rate, thereby improving the grouting efficiency, reducing the operation cycle, and having lower requirements on the slurry ratio parameters.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0073] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A cave adaptive grouting device, characterized in that: It includes a mixer, a grouting pump, a diameter adjustment seat, a first liquid injection pipe, a pipe diameter adjustment seat and a second liquid injection pipe; The mixer is provided with a holding chamber for holding the slurry; The grouting pump is connected to the mixer; The caliber adjustment seat is installed at the liquid outlet of the grouting pump, and the caliber adjustment seat includes a plurality of expansion plates, the plurality of expansion plates enclose and define a liquid passage communicating with the liquid outlet, and the plurality of expansion plates expand outward or contract inward to adjust the flow area of ​​the liquid passage; The first liquid injection tube is sleeved on the expansion plate and communicated with the liquid passage, and an extension layer is provided on the inner wall of the first liquid injection tube, and the extension layer is made of elastic memory alloy material; The pipe diameter adjustment seat is arranged on the first liquid injection pipe, and the pipe diameter adjustment seat includes a seat body and multiple groups of adjustment components. The seat body is provided with an air cavity. The multiple groups of adjustment components are arranged in an annular manner around the first liquid injection pipe, and each group of adjustment components includes an air guide tube and an air guide rod. The air guide tubes are respectively connected to the seat body and the first liquid injection pipe, and the air guide tubes are communicated with the air cavity. The air guide rod is slidably arranged in the air guide tube, and one end of the air guide rod is fixedly connected to the extension layer. Under the action of the air guide rod, the diameter of the first liquid injection pipe is expanded or reduced; The second liquid injection pipe is made of elastic material, and the second liquid injection pipe is connected to the liquid outlet of the first liquid injection pipe.

2. The cave adaptive grouting equipment according to claim 1, characterized in that: The aperture adjustment seat also includes a joint and a driving member, a transmission member, a rotating disk, an aperture baffle and a fixed disk installed in the joint, the transmission member is connected to the driving end of the driving member, the rotating disk is in transmission connection with the transmission member, a plurality of the aperture baffles define an installation position, the expansion plate is installed in the installation position, and each of the expansion plates is fixedly connected to one of the aperture baffles, and the fixed disk is movably connected to each of the aperture baffles.

3. The cave adaptive grouting equipment according to claim 2, characterized in that: The transmission member includes a first gear and a second gear. The first gear is connected to the driving end of the driving member. The second gear is meshed with the first gear for transmission. The rotating disk is installed on the inner wall of the second gear.

4. The cave adaptive grouting equipment according to claim 3, characterized in that: The rotating disk is provided with an arc groove and a flow hole, a plurality of the arc grooves are arranged around the flow hole, the flow hole is connected with the liquid passage, each aperture baffle is provided with a sliding block, and the sliding block on one aperture baffle is slidably connected to one arc groove.

5. The cave adaptive grouting equipment according to claim 4, characterized in that: The fixed disk is provided with a linear groove and a through hole, a plurality of the linear grooves are arranged around the through hole, the through hole is connected to the liquid passage, and each of the aperture baffles is also provided with a sliding block, the sliding block is located on the back of the sliding block, and the sliding block is slidably connected to one of the linear grooves.

6. The cave adaptive grouting equipment according to any one of claims 1 to 5, characterized in that: The pipe diameter adjustment seat also includes an air pump and an air valve. The air valve includes a valve body, an elastic part and a sealing part. A flow cavity connected to the air cavity is provided in the valve body. The elastic part is supported between the flow cavity and the sealing part. The telescopic rod of the air pump approaches or moves away from the sealing part.

7. The cave adaptive grouting equipment according to claim 6, characterized in that: The telescopic rod approaches and pushes the sealing member to move so as to open the flow cavity. Under the action of the air pump, the air guide rod moves in a direction away from the extension layer.

8. The cave adaptive grouting equipment according to claim 7, characterized in that: The pipe diameter adjustment seat also includes an air pressure sensor, which is arranged on the air pump and is connected to the air pump signal.

9. The cave adaptive grouting equipment according to any one of claims 1 to 5, characterized in that: It also includes a grouting sealing seat, which is installed at the liquid outlet of the first liquid injection pipe.

10. A cave adaptive grouting construction method, characterized in that: Using the cave adaptive grouting equipment according to any one of claims 1 to 9, the cave adaptive grouting construction method comprises: Inserting the second injection tube into the fissure of the cave; Calculate the grouting volume according to the size of the cracks and set the grouting flow rate accordingly; The diameter of the first liquid injection pipe is preset according to the grouting flow rate, and the pipe diameter adjustment seat is controlled to adjust the diameter of the first liquid injection pipe to the preset diameter; Control the caliber adjustment seat to match the flow area with the diameter of the first liquid injection pipe; Start the grouting pump, and the slurry flows from the mixer through the caliber adjustment seat, the first injection pipe, and then into the cracks from the second injection pipe; After the grouting is completed, the diameter of the first liquid injection pipe is restored to its original state, and the flow area of ​​the caliber adjustment seat is restored to its original state.

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