A device for settling the core wall of an earth-rock dam and for dredging the large-diameter borehole.

Abstract

This invention discloses a device for clearing the large-diameter inclined borehole for settling and monitoring the dam core wall, comprising a first impact steel ball, an upper cutter head, a lower cutter head, a flexible steel rope, and steel plates. The first impact steel ball has a through hole at its center, allowing the flexible steel rope to pass through. The upper cutter head includes a second impact steel ball located above the first impact steel ball and threaded onto the flexible steel rope, and a barrel-shaped circular cutter head welded to the outer tangent of the second impact steel ball with its cutting edge facing upwards. The lower cutter head is threaded onto the flexible steel rope and located below the first impact steel ball, with its cutting edge facing downwards and its structure identical to the upper cutter head. Two steel plates are provided, detachably connected to both ends of the flexible steel rope. This invention is simple to operate, does not damage the wall of the inclined borehole for settlement and monitoring, and allows for continued observation of horizontal and vertical displacements at various elevations using existing monitoring facilities after clearing the borehole. This data can be integrated with previous monitoring data for comprehensive study of the dam deformation mechanism.

Description

Technical Field

[0001] This invention relates to the technical field of equipment for settling and dredging inclined holes in earth-rock dam core walls, specifically a device for dredging large pipes in settling and inclined holes in earth-rock dam core walls. Background Technology

[0002] Settlement and inclination boreholes in the core wall of earth-rock dams are crucial monitoring tools for assessing horizontal and vertical displacement at various elevations within the core wall. This monitoring project begins during the dam foundation filling and continues throughout the entire construction period, making it of significant importance as it provides a comprehensive view of the dam's deformation during construction and operation. By monitoring the core wall deformation and ensuring its safety, the state of earth-rock dams can be understood in several ways: firstly, it allows for early detection of dam anomalies and potential hazards, enabling timely recommendations and measures to improve operation, management, and maintenance, thus preventing problems before they occur; secondly, it allows for the full realization of the reservoir's comprehensive benefits while ensuring safe operation; thirdly, it allows for in-depth analysis of the dam's deformation mechanism using observational data; and fourthly, it can verify design data, assess construction quality, and provide data for improving design, construction, and scientific research. Currently, most of the settlement and inclination boreholes in the core walls of earth-rock dams built nationwide experience blockage due to the interlocking of upper and lower pipes. Using commercially available unblocking equipment is not only prone to damaging the main pipe wall of the settlement and inclination borehole but also requires extremely high accuracy and precision, resulting in low efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device for clearing large pipes in inclined holes for settling of the core wall of earth-rock dams. It is simple to operate and will not damage the pipe wall.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A device for settling and unblocking the large pipe of the inclined hole in an earth-rock dam core wall includes a first impact steel ball, an upper cutter head, a lower cutter head, a flexible steel rope, and a steel plate.

[0006] The first impact steel ball has a through hole in its center that allows the flexible steel rope to pass through; the upper cutter head includes a second impact steel ball located above the first impact steel ball and threaded onto the flexible steel rope, and a barrel-shaped circular cutter head welded to the outer tangent of the second impact steel ball with its blade facing upward; the lower cutter head is threaded onto the flexible steel rope and located at the lower end of the first impact steel ball, with its blade facing downward and its structure being the same as the upper cutter head; two steel plates are provided, each detachably connected to both ends of the flexible steel rope.

[0007] Furthermore, multiple arc-shaped blades are welded to the outer periphery of the circular cutter head; the welding surface between the arc-shaped blades and the circular cutter head is 30mm long.

[0008] Furthermore, the diameters of the first and second impact steel balls are both 60 mm, and the diameter of the perforation located at the center is 15 mm.

[0009] Furthermore, multiple first impact steel balls are provided.

[0010] Furthermore, the outer diameter of the circular cutter head is 66mm, the wall thickness is 3mm, and the length is 60mm.

[0011] Furthermore, the arc-shaped blade has a length of 60mm and a wall thickness of 2mm.

[0012] Furthermore, the flexible steel rope is a steel wire rope with a diameter of 10mm.

[0013] Furthermore, the steel plate is a circular steel plate with a diameter of 16mm.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) When using the large pipe clearing device provided by this invention to clear the large pipe of the settlement and inclined borehole, manual labor is used in conjunction with a winch with a clutch to connect the clearing device. The clearing device is placed in the large pipe, and the lower cutter head cuts the pipe wall using the device's own weight. The winch is used to lift the clearing device, allowing the upper cutter head to cut the pipe wall. By repeating the lowering and lifting operations, the blockage caused by the interlocking of the upper and lower pipes in the large pipe can be cleared. This invention is simple to operate, and the wall of the settlement and inclined borehole will not be damaged. After the settlement and inclined borehole is cleared, the original monitoring facilities can continue to be used to observe the horizontal and vertical displacement at each elevation. By connecting with previous monitoring data, the deformation mechanism of the dam can be studied as a whole.

[0016] (2) In this invention, the first impact steel ball and the second impact steel ball are both strung on a flexible steel rope, and the contact point between the impact steel balls is a non-fixed point contact, so that the unblocking device provided by this invention can perform unblocking operations on curved pipe sections. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the present invention;

[0018] Figure 2 This is a top view of the structure of the present invention.

[0019] The names corresponding to the reference numerals in the attached figures are as follows:

[0020] 1-First impact steel ball, 2-Second impact steel ball, 3-Steel plate, 4-Flexible steel rope, 5-Circular cutter head, 6-Arc-shaped blade, 7-Perforation, 8-Upper cutter head, 9-Lower cutter head. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0022] like Figures 1-2 As shown, this embodiment provides a device for clearing the large pipe of the inclined hole for settling of the core wall of an earth-rock dam, including a first impact steel ball 1, an upper cutter head 8, a lower cutter head 9, a flexible steel rope 4, and a steel plate 3.

[0023] The first impact steel ball 1 has a through hole 7 at its center, which is 15mm in diameter and allows the flexible steel rope 4 to pass through. Multiple first impact steel balls are arranged sequentially on the flexible steel rope 4; preferably, 28 first impact steel balls are arranged. The contact points between adjacent impact steel balls are non-fixed, allowing the unblocking device provided in this embodiment to also unclog curved pipe sections. The upper cutter head 8 includes a second impact steel ball 2 located above the first impact steel ball 1 and strung on the flexible steel rope 4, and a barrel-shaped circular cutter head 5 welded to the outer tang of the second impact steel ball 2 with the blade facing upwards. The first impact steel ball 1 and the second impact steel ball 2 are the same size, 60mm in diameter spheres. To enable the unblocking device to withstand greater force during use, the circular cutter head 5 has a wall thickness of 3mm, a length of 60mm, and an outer diameter of 66mm. The lower cutter head 9 is strung on the flexible steel rope 4 and located below the first impact steel ball 1. The structure of the lower cutter head 9 is the same as that of the upper cutter head 8. During installation, the blade of the lower cutter head 9 must face downwards. The steel plate 3 serves to fix the first and second impact steel balls, preventing them from detaching from the flexible steel rope. Two steel plates 3 are provided, each detachably installed at both ends of the flexible steel rope. Preferably, the steel plates are circular steel plates with a diameter of 16mm. In this embodiment, the flexible steel rope is a steel wire rope with a diameter of 10mm.

[0024] In order to enable the present invention to better clear the inter-insertion part of the upper and lower pipes in the large pipe, multiple arc-shaped blades 6 are welded to the outer periphery of the circular cutter head 5. The arc-shaped blades and the circular cutter head can achieve double cutting against the pipe wall. Preferably, four arc-shaped blades 6 are provided. The welding surface of the arc-shaped blades 6 and the circular cutter head 5 is 30mm long, and the length of the arc-shaped blades is 60mm and the wall thickness is 2mm.

[0025] When using the large pipe dredging device provided in this embodiment to dredge a large pipe that has settled and is used for measuring inclined holes, manual assistance is used to connect the dredging device with a winch equipped with a clutch. The dredging device is placed in the large pipe, and the lower cutter head cuts the pipe wall using the device's own weight. The winch is used to lift the dredging device, which allows the upper cutter head to cut the pipe wall. By repeating the lowering and lifting operations, the blockage caused by the mutual insertion of the upper and lower pipes in the large pipe can be cleared.

[0026] This invention is simple to operate, and the wall of the settlement and inclined borehole will not be damaged. After the settlement and inclined borehole is cleared, the original monitoring facilities can continue to be used to observe the horizontal and vertical displacement at each elevation. It can be connected with previous monitoring data to study the deformation mechanism of the dam as a whole.

[0027] The above embodiments are merely one of the preferred embodiments of the present invention and should not be used to limit the scope of protection of the present invention. Any modifications or refinements made to the main design concept and spirit of the present invention that are not of substantial significance, but solve the same technical problem as the present invention, should be included within the scope of protection of the present invention.

Claims

1. A large pipe dredging device for earth-rockfill dam core wall settlement and inclinometer hole, characterized in that, It comprises a first impact steel ball (1), an upper cutter head (8), a lower cutter head (9), a flexible steel rope (4) and a steel plate (3). The first impact steel ball (1) is provided with a perforation (7) in the center, through which the flexible steel rope (4) passes; the upper cutter head (8) comprises a second impact steel ball (2) located on the upper end of the first impact steel ball (1) and threaded on the flexible steel rope (4), a barrel-shaped circular cutter head (5) welded on the outer circumferential surface of the second impact steel ball (2) and having an upward blade; the lower cutter head (9) is threaded on the flexible steel rope (4) and located on the lower end of the first impact steel ball (1), and has a downward blade and the same structure as the upper cutter head (8); the steel plate (3) is provided with two, which are respectively detachably connected to the two ends of the flexible steel rope (4).

2. The large pipe dredging device for settlement and inclinometer holes of earth-rockfill dam core wall according to claim 1, characterized in that, A plurality of arc-shaped cutter blades (6) are welded on the outer periphery of the circular cutter head (5); the welding surface length of the arc-shaped cutter blades (6) and the circular cutter head (5) is 30 mm.

3. The device according to claim 1, wherein, The diameters of the first impact steel ball (1) and the second impact steel ball (2) are both 60 mm, and the diameter of the perforation (7) in the center is 15 mm.

4. The large pipe dredging device for settlement and inclinometer holes of earth-rockfill dam core wall according to claim 1, characterized in that, The first impact steel ball (1) is provided with a plurality of.

5. The large pipe dredging device for settlement and inclinometer boreholes of earth-rockfill dam core walls according to claim 1, characterized in that, The outer diameter of the circular cutter head (5) is 66 mm, the wall thickness is 3 mm, and the length is 60 mm.

6. The large pipe dredging device for settlement and inclinometer boreholes of earth-rockfill dam core walls according to claim 2, characterized in that, The length of the arc-shaped cutter blade (6) is 60 mm, and the wall thickness is 2 mm.

7. The device according to claim 1, wherein, The flexible steel rope (4) is a steel wire rope with a diameter of 10 mm.

8. The device according to claim 1, wherein, The steel plate (3) is a circular steel plate with a diameter of 16 mm.

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