Shaft wall anti-silting water interception device

Abstract

The utility model provides a shaft wall anti-silting water intercepting device which comprises a solid-liquid separation structure arranged on the upper portion of a shaft wall and a water guide structure arranged on the lower portion of the shaft wall, the solid-liquid separation structure comprises a water filter screen rotationally connected with the shaft wall, and a spring used for supporting is arranged between the bottom of the water filter screen and the shaft wall. One end of the spring is connected with the bottom of the water filter screen, the other end of the spring is connected with the well wall, the water guide structure comprises a water storage tank which is located below the water filter screen and connected with the well wall, and the bottom of the water storage tank is provided with a dredging pipeline used for intensively draining accumulated water in the water storage tank to the well bottom or other water storage spaces. The device is simple in overall structure, low in cost, capable of being repeatedly used and easy and convenient to operate, when the phenomena of coal scattering and the like exist in a shaft, coal falls down along the shaft wall, passes through the upper structure of the water intercepting device and is accumulated to a certain weight, the water filter screen automatically inclines downwards, sundries are splashed into the shaft and cannot enter the water storage tank, and therefore the purpose of preventing siltation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical well water interception, in particular to a wellbore well wall anti-silting water interception device. Background Art

[0002] Underground coal mines use shafts to establish communication channels between the upper and lower parts of the shaft, mainly in the form of inclined shafts and vertical shafts. Vertical shafts are vertical and often pass through multiple rock layers during excavation. When excavating through water-bearing rock layers, some water leakage points will remain on the shaft wall due to the rich water in the aquifer itself, unsatisfactory grouting water control effect, and poor water-proofing ability of the shaft wall. Water behind the wall seeps out from the concrete shaft wall, and some water is also corrosive, which seriously affects the working environment of the shaft and damages the shaft equipment.

[0003] At present, the main method used is to collect water seepage from the well wall by interception, and then concentrate the water to the bottom of the well. For example, patents: a water interception structure for vertical shaft construction (202222288677.2), a Y-type cofferdam water guide device for sprinkling water in a coal mine shaft (202021962738.3), a water interception component and its construction method (201811 108076.0), and a vertical shaft water interception device (CN201711058260.4) have all invented corresponding water interception devices or methods. The water interception methods proposed in these inventions or utility models are essentially U-shaped water troughs installed on the inner wall of the well wall to intercept water seepage from the well wall, which is then concentrated and discharged under the pipeline. However, a major disadvantage of such water interception devices or methods is their poor ability to prevent siltation. This is especially true for main coal extraction wells, where a lot of coal is scattered during well operation and falls into the water interception trough along the well wall, quickly causing the trough to silt up and lose its water interception function, necessitating frequent cleaning. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a wellbore well wall anti-siltation water interception device, which can collect well wall seepage water and prevent solid debris from falling into the water interception trough.

[0005] The technical solution provided by the utility model is: a wellbore well wall anti-siltation water interception device, including a solid-liquid separation structure arranged on the upper part of the well wall and a water guide structure at the lower part, the solid-liquid separation structure includes a water filter net rotatably connected to the well wall, a spring for support is arranged between the bottom of the water filter net and the well wall, one end of the spring is connected to the bottom of the water filter net, and the other end is connected to the well wall, the water guide structure includes a water storage tank located below the water filter net and connected to the well wall, and a drainage pipe line is arranged at the bottom of the water storage tank for draining the accumulated water in the water storage tank to the bottom of the well or other water storage space.

[0006] Furthermore, the water filter net is rotatably connected to the well wall through a fastener, the water filter net is arranged tilted upward, one end of the fastener is fixedly connected to the well wall, and the lower part of the water filter net is hinged to the other end of the fastener.

[0007] Furthermore, the fastener is an expansion bolt.

[0008] Furthermore, the width of the highest point of the water filter mesh extending outward perpendicular to the well wall is greater than the opening of the water storage tank.

[0009] Furthermore, a drainage hole is provided at the bottom of the water storage tank, and the drainage pipe is connected to the drainage hole of the water storage tank.

[0010] The utility model has the advantages of simple overall structure, low cost, reusability and easy operation. When coal is scattered in the wellbore, the coal falls along the well wall and passes through the upper structure of the water intercepting device. When a certain weight is accumulated, the water filter net automatically tilts downward, and the debris is splashed into the wellbore but will not enter the water storage tank, thereby achieving the purpose of preventing siltation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a schematic diagram of the use process state of the utility model;

[0013] In the figure: 1 - water filter net, 2 - spring, 3 - fastener, 4 - water storage tank, 5 - drainage pipe. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments. Figure 1 to Figure 2 The drawings are all of embodiments, which are drawn in a simplified manner and are only used for the purpose of clearly and concisely illustrating the embodiments of the utility model. The following technical solutions shown in the drawings are specific solutions of the embodiments of the utility model and are not intended to limit the scope of the utility model to be protected. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] In the description of the present invention, it should be noted that the terms "front", "rear", "upper" and "lower" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0016] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms such as "setting" and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] like Figure 1-2 A wellbore wall anti-siltation and water interception device shown in the figure comprises a solid-liquid separation structure arranged on the upper part of the well wall and a water guiding structure at the lower part, the solid-liquid separation structure comprises a water filter net 1 rotatably connected to the well wall, a spring 2 for support is arranged between the bottom of the water filter net 1 and the well wall, one end of the spring 2 is connected to the bottom of the water filter net 1, and the other end is connected to the well wall, the water guiding structure comprises a water storage tank 4 connected to the well wall below the water filter net 1, and a drainage pipe 5 is arranged at the bottom of the water storage tank 4 for draining the accumulated water in the water storage tank 4 to the bottom of the well or other water storage space.

[0018] The water filter net 1 is rotatably connected to the well wall through the fastener 3. The water filter net 1 is tilted upward, one end of the fastener 3 is fixedly connected to the well wall, and the lower part of the water filter net 1 is hinged to the other end of the fastener 3. The spring 2 can bear the light weight of debris. When a certain weight of debris accumulates on the water filter net 1, the spring 2 is compressed, and the water filter net 2 automatically tilts downward. After the debris splashes into the wellbore, the spring 2 restores the water filter net 1 to its original position; the water storage tank 4 is concave and groove-shaped. The water flowing from the well wall passes through the upper water filter net 1 and is concentrated in the concave groove. Finally, it is guided to the bottom of the well or a centralized water storage point through the drainage pipe 5 installed at the bottom of the water storage tank 4.

[0019] Specifically, the fastener 3 is an expansion bolt.

[0020] The width of the highest point of the water filter net 1 extending outward perpendicular to the well wall is greater than the opening of the water storage tank 4, and the length of the water filter net 1 is greater than the length of the water storage tank 4. A drainage hole is provided at the bottom of the water storage tank 4, and the drainage pipe 5 is connected to the drainage hole of the water storage tank 4.

[0021] When the utility model is used specifically, the following steps are included:

[0022] (1) Clean the wall of the installation well;

[0023] (2) Use expansion bolts to fix the water filter screen 1 and the spring 2 to the well wall as a whole;

[0024] (3) A drainage pipe 5 is used to connect the drainage hole at the bottom of the water storage tank 4;

[0025] (4) The water from the well wall flows into the water storage tank 4 through the water filter net 1, and the drainage pipe 5 drains the accumulated water in the water storage tank 4 to the bottom of the well or other water storage space;

[0026] (5) The coal falls along the shaft wall and passes through a filter screen with a spring device. When a certain weight of debris accumulates, it automatically tilts downward and is splashed into the shaft.

[0027] The above is only one embodiment of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the attached claims.

Claims

1. A device for preventing siltation and water interception of a wellbore wall, characterized in that: The invention comprises a solid-liquid separation structure arranged on the upper part of the well wall and a water guide structure at the lower part, wherein the solid-liquid separation structure comprises a water filter net (1) rotatably connected to the well wall, a spring (2) for support is arranged between the bottom of the water filter net (1) and the well wall, one end of the spring (2) is connected to the bottom of the water filter net (1), and the other end is connected to the well wall, the water guide structure comprises a water storage tank (4) located below the water filter net (1) and connected to the well wall, and a drainage pipe (5) is arranged at the bottom of the water storage tank (4) for draining the accumulated water in the water storage tank (4) to the well bottom or water storage space.

2. A wellbore wall anti-silting water interception device according to claim 1, characterized in that: The water filter net (1) is rotatably connected to the well wall via a fastener (3); the water filter net (1) is arranged to be inclined upward; one end of the fastener (3) is fixedly connected to the well wall; and the lower part of the water filter net (1) is hingedly connected to the other end of the fastener (3).

3. A wellbore wall anti-silting water interception device according to claim 2, characterized in that: The fastener (3) is an expansion bolt.

4. A wellbore wall anti-silting water interception device according to claim 1, characterized in that: The width of the highest point of the water filter net (1) extending outwards perpendicular to the well wall is greater than the opening of the water storage tank (4).

5. A wellbore wall anti-silting water interception device according to claim 1, characterized in that: A drainage hole is provided at the bottom of the water storage tank (4), and the drainage pipe line (5) is connected to the drainage hole of the water storage tank (4).

Images