Drilling anti-collapse device for geological exploration

Abstract

The utility model relates to the technical field of geological exploration, in particular to a geological exploration drilling anti-collapse device, which effectively avoids shaking caused by a gap between a sleeve and a drilling hole, greatly enhances the supporting stability of the drilling hole, remarkably reduces the risk of drilling hole collapse and improves the practicability, and comprises the sleeve arranged in the drilling hole, a lead screw is installed in the sleeve, a plurality of supporting pieces are installed on the lead screw, a plurality of openings allowing the supporting pieces to penetrate through are formed in the side wall of the sleeve, the distance between the two ends of the supporting pieces is adjusted by rotating the lead screw, and the two ends of the supporting pieces are expanded and shrunk. Connecting blocks are arranged at the two ends of the supporting piece, the connecting blocks at the two ends of the supporting piece are in threaded connection with the lead screw, and the screwing directions of threads, connected with the connecting blocks at the two ends of the supporting piece, of the lead screw are opposite; the connecting block at one end of the supporting piece is fixedly connected with the sleeve.

Description

Technical Field

[0001] This utility model relates to the field of geological exploration technology, specifically to a geological exploration borehole anti-collapse device. Background Technology

[0002] As is well known, geological exploration is an investigation and research activity that uses various means and methods to explore and detect geology, determine suitable bearing strata, determine the foundation type based on the bearing capacity of the bearing strata, and calculate foundation parameters. Various instruments are required in the exploration process.

[0003] Currently, in the field of borehole collapse prevention in geological exploration, the common method is to insert casing inside the borehole to prevent borehole collapse. However, this traditional anti-collapse device has significant shortcomings. To ensure that the casing can be smoothly inserted into the borehole, the casing diameter is usually smaller than the borehole diameter. This results in the casing not being able to fit tightly against the borehole wall inside the borehole, making it prone to shaking. This shaking not only reduces the support stability of the casing for the borehole, but in extreme cases, it may even exacerbate the risk of borehole collapse, greatly reducing the effectiveness of the collapse prevention. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a geological exploration borehole anti-collapse device, which effectively avoids the shaking problem caused by the gap between the casing and the borehole, greatly enhances the support stability of the borehole, significantly reduces the risk of borehole collapse, and improves practicality.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a geological exploration borehole anti-collapse device, comprising a casing inserted into the borehole, a screw installed inside the casing, a plurality of support plates installed on the screw, and a plurality of openings for the support plates to pass through on the side wall of the casing. By rotating the screw, the distance between the two ends of the support plates is adjusted, thereby expanding and contracting the two ends of the support plates. When the two ends of the support plates contract, the middle part of the support plate is supported and can pass through the opening to support the inner wall of the outer hole of the casing, thereby playing a role in stabilizing the support.

[0008] Furthermore, connecting blocks are provided at both ends of the support plate.

[0009] Furthermore, the connecting blocks at both ends of the support plate are threadedly connected to the lead screw, and the threads on the lead screw connecting the connecting blocks at both ends of the support plate rotate in opposite directions.

[0010] Furthermore, the connecting block at one end of the support plate is fixedly connected to the sleeve, and the connecting block at the other end of the support plate is threadedly connected to the lead screw, wherein the lead screw is a one-way thread.

[0011] Furthermore, the inner wall of the sleeve is provided with a mounting block for mounting the lead screw, and the lead screw and the mounting block are rotatably connected.

[0012] Furthermore, a screw-operated component for rotating the screw is fixedly provided on the lead screw.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a geological exploration borehole anti-collapse device, which has the following beneficial effects:

[0015] This geological exploration borehole anti-collapse device uses a screw and support plate installed inside the casing. Rotating the screw allows for flexible adjustment of the distance between the two ends of the support plate, enabling its expansion and contraction. When the support plate contracts, its middle section rises and passes through the opening in the casing sidewall to support the inner wall of the borehole outside the casing. Compared to the traditional method relying solely on the casing, this multi-point support structure ensures close contact with the borehole wall, effectively avoiding swaying caused by gaps between the casing and the borehole. This significantly enhances the stability of the borehole support and substantially reduces the risk of borehole collapse.

[0016] This device can precisely control the support force and position of the support plates by adjusting the lead screw according to the actual conditions of different boreholes. Regardless of the complexity of geological conditions or the uniformity of soil pressure distribution around the borehole, it can adaptively adjust the support state to evenly distribute the pressure, thereby better adapting to various geological exploration environments and improving the practicality of the device. Attached Figure Description

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

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a cross-sectional view of the first embodiment of the present invention;

[0020] Figure 4 This is a cross-sectional view of the second embodiment of the present invention;

[0021] Figure 5 This utility model Figure 1 A partially enlarged structural diagram of point A shown in the image;

[0022] Figure 6 This utility model Figure 2 The diagram shows a partially enlarged structural schematic at point B.

[0023] In the diagram: 1. Sleeve; 2. Lead screw; 3. Support plate; 4. Connecting block; 5. Mounting block; 6. Tightening component; 7. Opening. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-6 This utility model discloses a geological exploration borehole anti-collapse device, including a casing 1 inserted into the borehole, an installation block 5 provided on the inner wall of the casing 1, a rotatable screw 2 installed on the installation block 5, a number of support plates 3 installed on the screw 2, the support plates 3 being made of elastic material, a number of openings 7 for the support plates 3 to pass through on the side wall of the casing 1, and a connecting block 4 provided at both ends of the support plates 3.

[0026] First embodiment, such as Figure 3 As shown, the connecting blocks 4 at both ends of the support plate 3 are threadedly connected to the lead screw 2. The threads on the lead screw 2 that connect to the connecting blocks 4 at both ends of the support plate 3 have opposite directions of rotation. Rotating the lead screw 2 drives the two ends of the support plate 3 to move closer to or further away from each other at the same time.

[0027] Second embodiment, such as Figure 4 As shown, the connecting block 4 at one end of the support plate 3 is fixedly connected to the sleeve 1, and the connecting block 4 at the other end of the support plate 3 is threadedly connected to the lead screw 2. The connection between the lead screw 2 and the connecting block 4 is a one-way thread.

[0028] In use, the screw 2 is rotated to adjust the distance between the two ends of the support plate 3, which expands and contracts the two ends of the support plate 3. When the two ends of the support plate 3 contract, the middle part of the support plate 3 can pass through the opening 7 and support the inner wall of the outer hole of the sleeve 1, thus playing a role in stabilizing the support.

[0029] A screw 6 for rotating the screw 2 is fixedly provided on the screw 2.

[0030] In summary, this geological exploration borehole collapse prevention device involves inserting the casing 1 into the borehole. When borehole collapse prevention is required, the distance between the two ends of the support plate 3 is changed by rotating the lead screw 2. As the two ends of the support plate 3 retract, its middle portion gradually rises and passes through the opening 7 on the side wall of the casing 1 until it supports the inner wall of the borehole outside the casing 1. At this point, the support plate 3 forms a tight contact with the inner wall of the borehole, providing stable support for the borehole and effectively preventing borehole collapse.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A geological exploration borehole anti-collapse device, comprising a casing (1) inserted into the borehole, characterized in that: A lead screw (2) is installed inside the sleeve (1), and several support plates (3) are installed on the lead screw (2). Several openings (7) are opened on the side wall of the sleeve (1) for the support plates (3) to pass through. Rotating the lead screw (2) adjusts the distance between the two ends of the support plates (3), and expands and contracts the two ends of the support plates (3). When the two ends of the support plates (3) contract, the middle part of the support plates (3) can pass through the openings (7) and support the inner wall of the outer hole of the sleeve (1), thus playing a role in stabilizing the support.

2. The geological exploration borehole anti-collapse device according to claim 1, characterized in that: Both ends of the support plate (3) are provided with connecting blocks (4).

3. The geological exploration borehole anti-collapse device according to claim 2, characterized in that: The connecting blocks (4) at both ends of the support plate (3) are threadedly connected to the lead screw (2), and the threads on the lead screw (2) that connect the connecting blocks (4) at both ends of the support plate (3) are in opposite directions.

4. The geological exploration borehole anti-collapse device according to claim 2, characterized in that: The connecting block (4) at one end of the support plate (3) is fixedly connected to the sleeve (1), and the connecting block (4) at the other end of the support plate (3) is threadedly connected to the lead screw (2), wherein the lead screw (2) is a one-way thread.

5. The geological exploration borehole anti-collapse device according to claim 1, characterized in that: The inner wall of the sleeve (1) is provided with a mounting block (5) for mounting the lead screw (2), and the lead screw (2) and the mounting block (5) are rotatably connected.

6. A geological exploration borehole anti-collapse device according to any one of claims 1-5, characterized in that: The lead screw (2) is fixedly provided with a screwing component (6) for rotating the lead screw (2).

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