A dammed lake drilling discharge anti-piping structure

Abstract

The application discloses a dammed lake drilling discharge anti-pipe heaving structure and relates to the technical field of auxiliary hole turning structures.The application comprises a fixing disc and a sealing disc, the fixing disc and the sealing disc are fixedly connected through bolts, a fixing sleeve pipe penetrates through the fixing disc, an extension sleeve pipe is fixed at one end of the fixing sleeve pipe through bolts, and the inside of the fixing sleeve pipe and the extension sleeve pipe is filled with sealing sleeve pipes.The application gradually fills the extension sleeve pipe inside the drilling hole as the drilling depth deepens, in order to reduce the erosion of the water flow to the inner wall of the drilling hole and avoid the collapse of the drilling hole, the sealing sleeve pipes are gradually filled in the extension sleeve pipe extending into the inside of the drilling hole, the multiple sealing sleeve pipes are coaxially arranged, and the sealing sleeve pipes and the extension sleeve pipe not only block the water flow but also support the inner wall of the drilling hole, effectively avoiding the collapse of the drilling hole and the emergence of the pipe heaving.

Description

Technical Field

[0001] This invention belongs to the technical field of borehole auxiliary structure, and in particular relates to a structure for preventing piping in a landslide dammed lake. Background Technology

[0002] Under seepage, fine soil particles flow along the pores formed by the framework particles. The increased flow velocity of water in these pores causes the fine soil particles to be eroded and carried away. This is also known as piping. The diameter of the gushing water can range from a few centimeters to several meters, and raised sand rings often form around the pores. When piping occurs, the water surface appears to be churning. As the upstream water level rises and the duration of the churning increases, the danger worsens. Large amounts of gushing water and sand destroy the soil framework of dikes and sluice gates, enlarge the channels, and erode the foundation soil, causing the structures to collapse and resulting in accidents such as dike breaches, dam collapses, and sluice gate failures.

[0003] When releasing water from a landslide dammed lake, it is necessary to drill holes in the wall that formed the dam. During drilling, water seepage may erode the inner wall of the hole, which may not only cause the hole to collapse, but also cause piping at the hole, thus affecting the safety and stability of the entire landslide dammed lake. Summary of the Invention

[0004] The purpose of this invention is to provide a structure for preventing piping during borehole drainage in landslide dammed lakes, which solves the problem of borehole collapse caused by water seepage during existing borehole drilling processes in landslide dammed lakes.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a structure for preventing piping in a landslide dammed lake by drilling, comprising a fixed plate and a sealing plate, which are fixedly connected by bolts. A fixed sleeve passes through the fixed plate, and an extension sleeve is fixed to one end of the fixed sleeve by bolts. Both the fixed sleeve and the extension sleeve are filled with sealing sleeves.

[0007] The fixed sleeve includes a tube body with a rectangular groove opened along the axial direction on the surface, and connecting discs are fixed at both ends of the tube body. A limiting disc that cooperates with the fixed disc is fixed on the outer circular surface of one end of the tube body.

[0008] A support ring coaxial with the tube is fixed on the inner wall of the tube, and several guide rods are fixed axially on the inner circular surface of the support ring.

[0009] As a preferred embodiment of the present invention, the fixed plate is provided with a through hole that mates with the tube body, and a limiting sleeve that mates with the limiting plate is fixed on one surface of the fixed plate. Both the fixed plate and the sealing plate are provided with mounting holes that mate with bolts.

[0010] As a preferred embodiment of the present invention, a sealing gasket is provided inside the limiting sleeve, and the sealing gasket is disposed between the fixing plate and the limiting plate.

[0011] The extended sleeve structure is similar to the fixed sleeve structure. The extended sleeve is the main body of the fixed sleeve excluding the limiting plate, and the connecting plates at both ends of the fixed sleeve are provided with connecting holes.

[0012] As a preferred embodiment of the present invention, a sealing gasket is fixed to one end face of the sealing disc, and the sealing gasket is annular and disposed on a surface away from the fixed disc.

[0013] As a preferred embodiment of the present invention, both ends of the guide rod are fixedly connected to the inner circular surface of the connecting disc.

[0014] As a preferred embodiment of the present invention, one end face of the sealing sleeve is provided with an annularly spaced arc-shaped groove, and the other end face of the sealing sleeve is fixed with an arc-shaped connecting plate that mates with the arc-shaped groove.

[0015] As a preferred embodiment of the present invention, a guide groove that mates with the guide rod is provided on the outer circular surface of the sealing sleeve.

[0016] The present invention has the following beneficial effects:

[0017] This invention utilizes a combination of a fixed disc, a sealing disc, a fixed sleeve, an extension sleeve, and a sealing sleeve. During drilling, as the drilling depth increases, the extension sleeve gradually fills the borehole. To reduce water erosion of the borehole wall and prevent borehole collapse, a sealing sleeve is gradually filled into the extension sleeve extending into the borehole. Multiple sealing sleeves are coaxially arranged and work in conjunction with the extension sleeve to not only block water flow but also support the borehole wall, effectively preventing borehole collapse and thus avoiding piping.

[0018] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a borehole spillway structure for preventing piping in a landslide dammed lake, according to the present invention.

[0021] Figure 2This is a structural schematic diagram from another perspective of the present invention.

[0022] Figure 3 This is the left view of the present invention.

[0023] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure at point AA.

[0024] Figure 5 This is a schematic diagram of the fixed sleeve structure.

[0025] Figure 6 This is a schematic diagram of the extension sleeve.

[0026] Figure 7 This is a schematic diagram of the sealing sleeve.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1-Fixed disc, 2-Sealing disc, 3-Fixed sleeve, 301-Rectangular groove, 302-Pipe body, 303-Connecting disc, 304-Limiting disc, 305-Supporting ring, 306-Guide rod, 4-Extension sleeve, 5-Sealing sleeve, 501-Arc groove, 502-Arc connecting plate, 503-Guide groove, 6-Limiting sleeve, 7-Sealing gasket, 8-Sealing washer. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Specific Implementation Example 1:

[0031] Please see Figure 1-7 As shown, the present invention is a structure for preventing piping in a landslide dammed lake by drilling, including a fixed plate 1 and a sealing plate 2. The fixed plate 1 and the sealing plate 2 are fixedly connected by bolts. A fixed sleeve 3 passes through the fixed plate 1. An extension sleeve 4 is fixed to one end of the fixed sleeve 3 by bolts. Both the fixed sleeve 3 and the extension sleeve 4 are filled with sealing sleeves 5.

[0032] The fixed sleeve 3 includes a tube body 302 with a rectangular groove 301 axially formed on its surface. Both ends of the tube body 302 are fixed with connecting discs 303. A limiting disc 304 that mates with the fixed disc 1 is fixed on the outer circular surface of one end of the tube body 302. A support ring 305 coaxial with the tube body 302 is fixed on the inner wall of the tube body 302. Several guide rods 306 are axially fixed on the inner circular surface of the support ring 305. Both ends of the guide rods 306 are fixedly connected to the inner circular surface of the connecting disc 303.

[0033] The fixed plate 1 has a through hole that mates with the tube body 302. A limiting sleeve 6 that mates with the limiting plate 304 is fixed on one surface of the fixed plate 1. Both the fixed plate 1 and the sealing plate 2 have mounting holes that mate with bolts.

[0034] The structure of the extension sleeve 4 is similar to that of the fixed sleeve 3. The extension sleeve 4 is the main body of the fixed sleeve 3 excluding the limiting plate 304, and the connecting plates 303 at both ends of the fixed sleeve 3 are provided with connection holes.

[0035] One end face of the sealing sleeve 5 is provided with an annularly spaced arc-shaped groove 501, and the other end face of the sealing sleeve 5 is fixed with an arc-shaped connecting plate 502 that mates with the arc-shaped groove 501; a guide groove 503 that mates with the guide rod 306 is provided on the outer circular surface of the sealing sleeve 5.

[0036] One specific application of this embodiment is as follows: When in use, the device is placed at the location where drilling is required and fitted onto the rotating rod. After the drill bit has penetrated to one end of the barrier lake wall, the drill rod and drill bit are removed, and the fixed sleeve 3 and extension sleeve 4 are gradually extended into the borehole. Then, a sealing sleeve 5 is added to the fixed sleeve 3 and extension sleeve 4 to strengthen the structural strength of the borehole end and reduce the scouring and penetration intensity of the water flow on the borehole. Then, a smaller drill bit is replaced and inserted into the barrier lake wall through the sealing sleeve 5 to continue drilling. During construction, multiple sealing sleeves 5 are set coaxially and, together with the extension sleeve 4, not only block the water flow but also support the inner wall of the borehole, effectively preventing the borehole from collapsing and thus preventing piping. Specific Implementation Example 2:

[0038] Based on Specific Embodiment 1, the difference in this embodiment is as follows:

[0039] like Figure 2 , Figure 4As shown, a sealing gasket 7 is provided inside the limiting sleeve 6, and the sealing gasket 7 is positioned between the fixed plate 1 and the limiting plate 304; a sealing washer 8 is fixed to one end face of the sealing plate 2, and the sealing washer 8 is annular and positioned on a surface away from the fixed plate 1. By providing a sealing gasket inside the limiting sleeve 5 and a sealing washer at the bottom of the sealing plate 2, the amount of external water flowing into the borehole from the side can be reduced during use, thereby reducing the water flow velocity, reducing the scouring of the borehole wall by the water flow, thus avoiding piping and improving construction safety.

[0040] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A structure for preventing piping during borehole discharge in a landslide dammed lake, comprising a fixed plate (1) and a sealing plate (2), wherein the fixed plate (1) and the sealing plate (2) are fixedly connected by bolts, characterized in that: A fixing sleeve (3) runs through the fixing plate (1), and an extension sleeve (4) is fixed to one end of the fixing sleeve (3) by bolts. Both the fixing sleeve (3) and the extension sleeve (4) are filled with sealing sleeves (5). The fixed sleeve (3) includes a tube body (302) with a rectangular groove (301) on its surface along the axial direction. Both ends of the tube body (302) are fixed with connecting discs (303). A limiting disc (304) that cooperates with the fixed disc (1) is fixed on the outer circular surface of one end of the tube body (302). A support ring (305) coaxial with the tube body (302) is fixed on the inner wall of the tube body (302), and a number of guide rods (306) are fixed along the axial direction on the inner circular surface of the support ring (305). The fixed plate (1) has a through hole that mates with the tube body (302). A limiting sleeve (6) that mates with the limiting plate (304) is fixed on one surface of the fixed plate (1). Both the fixed plate (1) and the sealing plate (2) have mounting holes that mate with bolts. The structure of the extension sleeve (4) is similar to that of the fixed sleeve (3). The extension sleeve (4) is the main body of the fixed sleeve (3) without the limiting plate (304), and the connecting plates (303) at both ends of the fixed sleeve (3) are provided with connecting holes.

2. The structure for preventing piping and overflow from a landslide dammed lake using borehole drainage according to claim 1, characterized in that, The limiting sleeve (6) is provided with a sealing gasket (7), which is disposed between the fixed plate (1) and the limiting plate (304).

3. The structure for preventing piping and overflow from a landslide dammed lake using borehole drainage according to claim 1, characterized in that, A sealing gasket (8) is fixed to one end face of the sealing disc (2). The sealing gasket (8) is annular and is disposed on a surface away from the fixed disc (1).

4. The structure for preventing piping and overflow from a landslide dammed lake using borehole drainage according to claim 1, characterized in that, Both ends of the guide rod (306) are fixedly connected to the inner circular surface of the connecting plate (303).

5. The structure for preventing piping and overflow from a landslide dammed lake using borehole drainage according to claim 1, characterized in that, The sealing sleeve (5) has an arc-shaped groove (501) at equal intervals on one end face, and an arc-shaped connecting plate (502) that cooperates with the arc-shaped groove (501) is fixed on the other end face of the sealing sleeve (5).

6. The structure for preventing piping and overflow from a landslide dammed lake via borehole as described in claim 5, characterized in that, The outer circular surface of the sealing sleeve (5) is provided with a guide groove (503) that cooperates with the guide rod (306).

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