A device for treating karst caves in pile foundation construction
By designing a karst cave treatment device that includes an installation base, a circular hollow base, a connecting pipe, a valve, a conveying component, and a discharge component, the problem of uneven filling caused by irregular karst cave inner walls was solved, achieving uniform filling inside the karst cave and convenient construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CCCC (CHANGSHA) CONSTR CO LTD
- Filing Date
- 2025-07-24
- Publication Date
- 2026-07-03
AI Technical Summary
Existing karst cave filling devices cannot deliver filling material evenly in karst caves with irregular inner walls, resulting in uneven filling.
A karst cave treatment device was designed, comprising an installation base, a circular hollow base, a connecting pipe, a pipeline, valves, a conveying assembly, and a discharge assembly. By setting up pipelines and valves to connect the installation sleeve, the installation head, the conveying pipe, and the discharge head, uniform delivery and filling of concrete can be achieved.
This technology enables the uniform filling of concrete on the sides and bottom of the karst cave, improving the ease of use of the device in the cave and enhancing the stability and safety of construction.
Smart Images

Figure CN224451587U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of karst cave treatment, and in particular to a karst cave treatment device used in pile foundation construction. Background Technology
[0002] Karst regions often have numerous caves and underground rivers. When carrying out engineering construction in these areas, it is necessary to avoid them as much as possible. If it is impossible to avoid them, measures such as seepage prevention and filling should be taken to minimize the risks of subsequent construction. Therefore, the stability of the foundation and the problem of cave collapse restrict the safety of the project and the progress of the project.
[0003] The prior art patent application with publication number CN222700945U describes a method that uses a hammer with an impact tube at its bottom. A punching machine propels the hammer a certain distance above the karst cave, allowing only the impact tube to penetrate the cave. Because the outer diameter of the impact tube is much smaller than the end face of the impact end, the hammer provides structural support, stably supporting the strata above the cave. This avoids the instability of the cave structure caused by the hammer penetrating the cave. Furthermore, an inner cavity and an elastic expansion tube are connected to the impact tube, with an elastic expansion sleeve at the end of the impact tube. Backfill material is continuously injected into the elastic expansion sleeve through the inner cavity via the elastic expansion tube, causing the sleeve to gradually expand within the cave, effectively filling and supporting it. Through the combined effect of these features, this karst cave pre-filling device for karst pile foundation construction effectively solves the current problem of ensuring cave stability during karst cave treatment.
[0004] However, current cave filling devices use elastic expansion sleeves for auxiliary operation. However, the inner walls of current caves are irregularly shaped, which makes it impossible to evenly deliver raw materials to different locations inside the cave for filling.
[0005] Therefore, it is necessary to provide a device for treating karst caves in pile foundation construction to solve the above-mentioned technical problems. Utility Model Content
[0006] This utility model provides a karst cave treatment device for pile foundation construction, which solves the problem that the irregular shape of the inner wall of the karst cave causes the raw materials to be unevenly delivered to different positions inside the karst cave for filling operations.
[0007] To solve the above-mentioned technical problems, this utility model provides a device for treating karst caves in pile foundation construction, comprising:
[0008] Mounting base, circular hollow base, connecting pipe, pipe, valve, conveying assembly, two discharge heads and discharge assembly;
[0009] The connecting pipe is located at the center of the mounting base;
[0010] The circular hollow seat is connected to the bottom of the connecting pipe;
[0011] The pipe is connected to the surface of the circular hollow base;
[0012] The valve is installed on multiple of the pipelines;
[0013] The conveying assembly is disposed at one end of the valve. The conveying assembly includes a connecting mounting sleeve, a connecting mounting head, and a conveying pipe. The connecting mounting sleeve is connected to one end of the valve. The connecting mounting head is pluggably connected to one end of the connecting mounting sleeve. The conveying pipe is connected to one end of the connecting mounting head.
[0014] The discharge assembly is disposed at the bottom of the circular hollow seat. The discharge assembly includes a first discharge pipe, a control valve, a disassembly component, and a second discharge pipe. The first discharge pipe is connected to the center position of the bottom of the circular hollow seat. The control valve is installed at one end of the first discharge pipe. The disassembly component is connected to one end of the control valve. The second discharge pipe is connected to one end of the disassembly component.
[0015] The two discharge heads are respectively connected to one end of the conveying pipe and the second discharge pipe.
[0016] Preferably, the connecting mounting sleeve and the connecting mounting head are used for the installation and removal of the delivery pipe.
[0017] Preferably, the conveying pipe and the discharge head are used to increase the distance between the raw material conveying points.
[0018] Preferably, a flexible tube is connected to the top end of the connecting tube.
[0019] Preferably, one end of the hose is connected to an installation head, and the mounting base is provided with a connecting bracket.
[0020] Preferably, an extension hose is provided between the conveying pipe and the discharge head.
[0021] Preferably, an adjustment component is provided on one side of the mounting base. The adjustment component includes a telescopic rod, a connecting frame, and a bracket. The telescopic rod is mounted on one side of the mounting base via the bracket, and the connecting frame connects the telescopic rod and the discharge head.
[0022] Compared with related technologies, the karst cave treatment device provided by this utility model for pile foundation construction has the following beneficial effects:
[0023] This utility model provides a device for treating karst caves in pile foundation construction. Pipes and valves are installed on the surface of a circular hollow base to connect with a mounting sleeve, a connecting mounting head, a conveying pipe, and a discharge head. This facilitates the delivery of concrete to the interior of the circular hollow base via the conveying pipe and connecting pipe. The side karst caves can then be filled through the pipes and conveying components. A discharge component is installed at the bottom of the circular hollow base to fill the bottom karst caves, thereby increasing the convenience of using the entire device in karst caves. Attached Figure Description
[0024] Figure 1 A schematic diagram of the first embodiment of a karst cave treatment device for pile foundation construction provided by this utility model;
[0025] Figure 2 for Figure 1 The enlarged schematic diagram of part A shown below;
[0026] Figure 3 for Figure 1 The diagram shows the structure of the cave treatment device.
[0027] Figure 4 for Figure 1 The diagram shows the working process of the cave treatment device.
[0028] Figure 5 This is a schematic diagram of the second embodiment of a karst cave treatment device for pile foundation construction provided by this utility model.
[0029] The diagram labels are as follows: 1. Mounting base; 2. Connecting pipe; 3. Hollow circular base; 4. Pipe; 5. Valve; 6. Conveying assembly; 61. Connecting mounting sleeve; 62. Connecting mounting head; 63. Conveying pipe;
[0030] 7. Discharge head; 8. Hose; 9. Mounting head;
[0031] 10. Extend the hose;
[0032] 11. Adjustment component; 111. Telescopic rod; 112. Connecting frame; 113. Bracket;
[0033] 12. Connecting bracket;
[0034] 13. Discharge assembly; 131. First discharge pipe; 132. Disassembly component; 133. Second discharge pipe; 134. Control valve. Detailed Implementation
[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0036] First Embodiment
[0037] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in, Figure 1 A schematic diagram of the first embodiment of a karst cave treatment device for pile foundation construction provided by this utility model; Figure 2 for Figure 1 The enlarged schematic diagram of part A shown below; Figure 3 for Figure 1 The diagram shows the structure of the cave treatment device. Figure 4 for Figure 1 The diagram shows the working process of the karst cave treatment device.
[0038] A device for treating karst caves in pile foundation construction, comprising:
[0039] Mounting base 1, circular hollow base 3, connecting pipe 2, pipe 4, valve 5, conveying assembly 6, two discharge heads 7, and discharge assembly 13;
[0040] The connecting pipe 2 is located at the center of the mounting base 1;
[0041] The circular hollow seat 3 is connected to the bottom of the connecting pipe 2;
[0042] The pipe 4 is connected to the surface of the circular hollow base 3;
[0043] The valve 5 is installed on multiple of the pipes 4;
[0044] The conveying assembly 6 is disposed at one end of the valve 5. The conveying assembly 6 includes a connecting mounting sleeve 61, a connecting mounting head 62, and a conveying pipe 63. The connecting mounting sleeve 61 is connected to one end of the valve 5. The connecting mounting head 62 is plugged into and connected to one end of the connecting mounting sleeve 61. The conveying pipe 63 is connected to one end of the connecting mounting head 62.
[0045] The discharge assembly 13 is disposed at the bottom of the circular hollow seat 3. The discharge assembly 13 includes a first discharge pipe 131, a control valve 134, a disassembly component 132, and a second discharge pipe 133. The first discharge pipe 131 is connected to the center position of the bottom of the circular hollow seat 3. The control valve 134 is installed at one end of the first discharge pipe 131. The disassembly component 132 is connected to one end of the control valve 134. The second discharge pipe 133 is connected to one end of the disassembly component 132.
[0046] The two discharge heads 7 are respectively connected to one end of the conveying pipe 63 and the second discharge pipe 133.
[0047] The disassembly component 132 consists of a disassembly connecting sleeve and a disassembly connecting head, which facilitates the disassembly of the discharge component 13 when using the conveying component 6. The connecting pipe 2 and the circular hollow seat 3 can rotate inside the mounting base 1, which facilitates the use of the conveying component 6 in different positions on the mounting base 1.
[0048] The connecting mounting sleeve 61 and the connecting mounting head 62 are used for the installation and removal of the delivery pipe 63.
[0049] The connecting mounting sleeve 61 and the connecting mounting head 62 can be either plug-in or threaded. The use of the connecting mounting sleeve 61 and the connecting mounting head 62 allows for the selection and replacement of the length of the conveying pipe 63. The use of the valve 5 allows for the opening and closing of the pipe 4, thereby enabling the control of the concrete flow.
[0050] The conveying pipe 63 and the discharge head 7 are used to increase the distance between raw material conveying points.
[0051] The top end of the connecting pipe 2 is connected to a flexible hose 8.
[0052] The entire device can be driven by the connecting pipe 2 and the circular hollow seat 3 to rotate the conveying component 6 to the designated position, and then the hose 8 is connected to the connecting pipe 2.
[0053] One end of the hose 8 is connected to the mounting head 9, and the mounting base 1 is provided with a connecting bracket 12.
[0054] The connecting bracket 12 can lift the entire device inside the cave using an external small lifting device.
[0055] The working principle of the karst cave treatment device for pile foundation construction provided by this utility model is as follows:
[0056] In use, when filling the side cavern, first rotate the connecting pipe 2 to drive the circular hollow seat 3 to rotate. When the circular hollow seat 3 rotates, it drives the pipe 4, valve 5, and conveying assembly 6 to rotate. After the circular hollow seat 3 with pipe 4, valve 5, and conveying assembly 6 rotates to the cavern filling position, connect the hose 8 to the external concrete conveying equipment through the installation head 9. Then open the valve 5 on the pipe 4 and place the entire device inside the cavern. Then start the external concrete conveying equipment to convey concrete through the hose 8 and connecting pipe 2 into the circular hollow seat 3. Then the concrete inside the circular hollow seat 3 is conveyed through the pipe 4, connecting installation sleeve 61, connecting installation head 62, and conveying pipe 63 to the inside of the discharge head 7. Finally, the concrete is conveyed through the discharge head 7 to the inside of the side cavern for filling.
[0057] When filling the bottom cavity, first close valve 5, then separate the conveying pipe 63 with discharge head 7 from the circular hollow seat 3 through connecting mounting sleeve 61 and connecting mounting head 62, then connect hose 8 to the external concrete conveying equipment through mounting head 9, then open control valve 134 on the first discharge pipe 131, then place the entire structure inside the cavity, then start the external concrete conveying equipment to convey concrete through hose 8 and connecting pipe 2 to the inside of the circular hollow seat 3, and then the concrete inside the circular hollow seat 3 is conveyed to the inside of the bottom cavity through the first discharge pipe 131, the second discharge pipe 133 and discharge head 7 for filling.
[0058] Compared with related technologies, the karst cave treatment device provided by this utility model for pile foundation construction has the following beneficial effects:
[0059] This utility model provides a device for treating karst caves in pile foundation construction. A pipe 4 and a valve 5 are provided on the surface of a circular hollow base 3 to connect the installation sleeve 61, the installation head 62, the conveying pipe 63, and the discharge head 7. This facilitates the transportation of concrete into the interior of the circular hollow base 3 through the conveying pipe 8 and the connecting pipe 2. The side karst caves can then be filled through the pipe 4 and the conveying assembly 6. A discharge assembly 13 is provided at the bottom of the circular hollow base 3 to fill the bottom karst caves, thereby increasing the convenience of using the entire device in karst caves.
[0060] Second Embodiment
[0061] Please refer to the following: Figure 5 Based on the first embodiment of this application which provides a karst cave treatment device for pile foundation construction, the second embodiment of this application proposes another karst cave treatment device for pile foundation construction. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.
[0062] Specifically, the second embodiment of this application provides a karst cave treatment device for pile foundation construction, which differs in that it also includes an extension hose 10, which is disposed between the conveying pipe 63 and the discharge head 7.
[0063] An adjustment assembly 11 is provided on one side of the mounting base 1. The adjustment assembly 11 includes a telescopic rod 111, a connecting frame 112, and a bracket 113. The telescopic rod 111 is installed on one side of the mounting base 1 through the bracket 113, and the connecting frame 112 is connected between the telescopic rod 111 and the discharge head 7.
[0064] The telescopic rod 111 is obliquely mounted on one side of the mounting base 1 via the bracket 113. Bolts are provided on the telescopic rod 111, and the telescopic rod 111 can be a multi-section telescopic rod.
[0065] The working principle of the karst cave treatment device for pile foundation construction provided by this utility model is as follows:
[0066] When adjusting the position of the discharge head 7, first pull the telescopic rod 111 to move the connecting frame 112. When the connecting frame 112 moves, the position of the discharge hopper 7 is adjusted under the action of the extension hose 10. After the discharge head 7 is adjusted to the appropriate position, the telescopic rod 111 can be fixed with bolts.
[0067] Compared with related technologies, the karst cave treatment device provided by this utility model for pile foundation construction has the following beneficial effects:
[0068] This utility model provides a karst cave treatment device for pile foundation construction. An extension hose 10 is set between the conveying pipe 63 and the discharge head 7 to work with the telescopic rod 111, the connecting frame 112 and the support 113, so as to facilitate the adjustment of the spacing of the discharge head 7 according to the usage.
[0069] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A device for handling karst caves in pile foundation construction, characterized in that, include: Mounting base, circular hollow base, connecting pipe, pipe, valve, conveying assembly, two discharge heads and discharge assembly; The connecting pipe is located at the center of the mounting base; The circular hollow seat is connected to the bottom of the connecting pipe; The pipe is connected to the surface of the circular hollow base; The valve is installed on multiple of the pipelines; The conveying assembly is disposed at one end of the valve. The conveying assembly includes a connecting mounting sleeve, a connecting mounting head, and a conveying pipe. The connecting mounting sleeve is connected to one end of the valve. The connecting mounting head is pluggably connected to one end of the connecting mounting sleeve. The conveying pipe is connected to one end of the connecting mounting head. The discharge assembly is disposed at the bottom of the circular hollow seat. The discharge assembly includes a first discharge pipe, a control valve, a disassembly component, and a second discharge pipe. The first discharge pipe is connected to the center position of the bottom of the circular hollow seat. The control valve is installed at one end of the first discharge pipe. The disassembly component is connected to one end of the control valve. The second discharge pipe is connected to one end of the disassembly component. The two discharge heads are respectively connected to one end of the conveying pipe and the second discharge pipe.
2. The device for karst cave treatment in pile foundation construction according to claim 1, characterized in that, The connecting mounting sleeve and the connecting mounting head are used for the installation and removal of the delivery pipe.
3. The device for karst cave treatment in pile foundation construction according to claim 1, characterized in that, The conveying pipe and the discharge head are used to increase the distance between raw material conveying points.
4. The device for karst cave treatment in pile foundation construction according to claim 1, characterized in that, A flexible tube is connected to the top end of the connecting pipe.
5. The device for karst cave treatment in pile foundation construction according to claim 4, characterized in that, One end of the hose is connected to an installation head, and a connecting bracket is provided on the installation base.
6. The device for karst cave treatment in pile foundation construction according to claim 1, characterized in that, An extension hose is provided between the conveying pipe and the discharge head.
7. The device for karst cave treatment in pile foundation construction according to claim 1, characterized in that, An adjustment assembly is provided on one side of the mounting base. The adjustment assembly includes a telescopic rod, a connecting frame, and a bracket. The telescopic rod is mounted on one side of the mounting base via the bracket, and the connecting frame connects the telescopic rod and the discharge head.