Soft soil layer hole collapse prevention device for geotechnical engineering investigation

Abstract

The utility model discloses a soft soil layer anti-sloughing hole device for geotechnical engineering investigation, which comprises a sampling barrel, one side of the sampling barrel is provided with a protective plate for supporting a soft soil layer, one side of the protective plate is fixedly connected with a telescopic rod for being connected with the sampling barrel, a through groove is arranged in the protective plate, and the telescopic rod is fixedly connected with the sampling barrel. A movable plate used for expanding the supporting range of the protection plate is slidably connected into the through groove, and a connecting piece used for fixing the movable plate is installed on the protection plate. According to the utility model, when aiming at exploration holes with different specifications, a worker firstly puts the sampling barrel and the protection plate into the exploration holes, then grasps the circular block to take the clamping column out of the clamping hole, and then moves the protection plate through the grip, and the protection plate is matched with the movable plate to enlarge or reduce the specification of supporting a soft soil layer; therefore, the anti-collapse device can be adapted to survey holes of all specifications, and workers do not need to waste time to need anti-collapse devices of different specifications.

Description

Technical Field

[0001] The utility model relates to the technical field of soft soil layers, in particular to a device for preventing hole collapse of soft soil layers in geotechnical engineering investigation. Background Art

[0002] Soft soil layers refer to soil layers mainly composed of saturated soft clay, silt or peat soil, organic soil and peat. These soil types have characteristics such as high natural water content, large void ratio, low permeability, high compressibility, low shear strength and bearing capacity. For soft soil layers, methods such as replacing soil with fill and sand cushion are generally adopted to improve the foundation stability and bearing capacity.

[0003] When the existing device for preventing hole collapse of soft soil layers in geotechnical engineering investigation is in use, due to the different specifications of the holes for investigation and sampling, the staff needs to find a collapse prevention device with a suitable specification to install in the hole. Otherwise, if the collapse prevention device is too large, it cannot be installed in the hole; if it is too small, it cannot effectively support the soft soil layer. Moreover, finding a collapse prevention device with a suitable specification will also waste the time of the staff and reduce the efficiency of geotechnical engineering investigation. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a device for preventing hole collapse of soft soil layers in geotechnical engineering investigation to solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A device for preventing hole collapse of soft soil layers in geotechnical engineering investigation includes a sampling cylinder. One side of the sampling cylinder is provided with a protection plate for supporting the soft soil layer. One side of the protection plate is fixedly connected with a telescopic rod for connecting the sampling cylinder. A through groove is opened inside the protection plate. A movable plate for expanding the support range of the protection plate is slidably connected inside the through groove. A connecting piece for fixing the movable plate is installed on the protection plate.

[0007] Preferably, the connecting piece includes a plurality of card holes opened on the movable plate. A card column for inserting into the card holes is slidably connected to the inner wall of the protection plate. A spring for pushing the card column to move is fixedly connected to the top of the protection plate. A circular block for supporting the spring is fixedly connected to the top of the card column.

[0008] Preferably, a handle for facilitating the staff to move the protection plate is fixedly connected to the top of the protection plate.

[0009] In summary, due to adopting the above technical scheme, the beneficial effects of the utility model are:

[0010] In this application, when facing exploration holes of different specifications, the staff first put the sampling cylinder and the protection plate into the exploration hole. Then, the staff grabs the circular block to take out the clamping column from the clamping hole. Next, the protection plate is moved through the handle. The protection plate and the movable plate cooperate to expand or contract the specification of the support for the soft soil layer, so that the device can adapt to all specifications of exploration holes. In this way, the staff does not need to waste time on anti-collapse devices of different specifications. Brief Description of the Drawings

[0011] Figure 1 Shows the overall structural schematic diagram provided by an embodiment of the present utility model;

[0012] Figure 2 Shows the cross-sectional view of the telescopic rod structure provided by an embodiment of the present utility model;

[0013] Figure 3 Shows the structural schematic diagram of the connecting piece provided by an embodiment of the present utility model.

[0014] Legend Explanation:

[0015] 1. Sampling cylinder; 2. Protection plate; 3. Telescopic rod; 4. Through groove; 5. Movable plate; 6. Clamping hole; 7. Clamping column; 8. Spring; 9. Circular block; 10. Handle. Detailed Embodiment

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0017] Please refer to Figures 1-3 , the present utility model provides a technical solution:

[0018] Embodiment 1:

[0019] As Figures 1-3 shown, a device for preventing the collapse of soft soil layers in geotechnical engineering exploration includes a sampling cylinder 1. One side of the sampling cylinder 1 is provided with a protection plate 2 for supporting the soft soil layer. One side of the protection plate 2 is fixedly connected with a telescopic rod 3 for connecting the sampling cylinder 1. A through groove 4 is opened inside the protection plate 2. A movable plate 5 for expanding the support range of the protection plate 2 is slidably connected inside the through groove 4. A connecting piece for fixing the movable plate 5 is installed on the protection plate 2.

[0020] Embodiment 2:

[0021] Basically the same as the technical solution of Embodiment 1, the difference is that asFigure 3 As shown, the connecting member includes a plurality of card holes 6 formed in the movable plate 5. The plurality of card holes 6 are linearly arranged at equal intervals in sequence. A card post 7 for inserting into the card holes 6 is slidably connected to the inner wall of the protection plate 2. A spring 8 for pushing the card post 7 to move is fixedly connected to the top of the protection plate 2. The spring 8 is sleeved on the outer wall of the card post 7. A circular block 9 for supporting the spring 8 is fixedly connected to the top of the card post 7.

[0022] Embodiment 3:

[0023] Basically the same as the technical solution of Embodiment 1, the difference is that, as Figure 1 and Figure 3 shown, a handle 10 for facilitating the staff to move the protection plate 2 is fixedly connected to the top of the protection plate 2.

[0024] In summary, when the soft soil layer anti-collapse hole device for geotechnical engineering investigation provided in this embodiment is in use, the staff first inserts the sampling cylinder 1 and the protection plate 2 into the investigation hole. Then the staff grabs the circular block 9 and moves it upward. The circular block 9 will drive the card post 7 to move out of the card hole 6. In this way, the movable plate 5 will lose its limit and can move. The staff can grab the handle 10 to move the protection plate 2. The movement of the protection plate 2 can cooperate with the movable plate 5 to expand or contract the specification of the support for the soft soil layer, so that this device can adapt to all specifications of investigation holes. In this way, the staff does not need to waste time on anti-collapse devices of different specifications.

[0025] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for preventing hole collapse in soft soil layers for geotechnical engineering investigation, including a sampling cylinder (1), characterized in that, On one side of the sampling cylinder (1), there is a protective plate (2) for supporting the soft soil layer. On one side of the protective plate (2), there is a telescopic rod (3) fixedly connected for connecting the sampling cylinder (1). Inside the protective plate (2), there is a through groove (4). Inside the through groove (4), there is a movable plate (5) slidably connected for expanding the support range of the protective plate (2). On the protective plate (2), there is a connecting piece for fixing the movable plate (5).

2. The anti-collapse hole device for soft soil layers used in geotechnical engineering exploration according to claim 1, wherein The connecting piece includes a plurality of card holes (6) opened on the movable plate (5). Inside the inner wall of the protective plate (2), there is a card post (7) slidably connected for inserting into the card holes (6). On the top of the protective plate (2), there is a spring (8) fixedly connected for pushing the card post (7) to move. On the top of the card post (7), there is a circular block (9) fixedly connected for supporting the spring (8).

3. The anti-collapse hole device for soft soil layers in geotechnical engineering exploration according to claim 2, characterized in that, On the top of the protective plate (2), there is a handle (10) fixedly connected for facilitating the movement of the staff to move the protective plate (2).

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