Wellhead reinforcing equipment for mine

Abstract

The invention relates to the technical field of well mouth protection, in particular to well mouth reinforcing equipment for a mine, which comprises a mounting ring, an annular air bag, a mounting plate, waterproof cloth, a limiting ring and the like, an annular air bag for supporting and reinforcing the well wall is arranged on the mounting ring; a limiting ring used for forcing the annular air bag to expand outwards is arranged on the inner side of the annular air bag. Waterproof cloth used for preventing surface water flow from flowing backwards is bonded to the surface of the mounting ring through waterproof glue, and a mounting plate is bonded to the other end of the waterproof cloth through waterproof glue. The annular air bag is inflated through the air pump, so that the annular air bag expands and extrudes and tamps the well wall, temporary reinforcement of the well mouth body is rapidly achieved, and collapse of the well mouth body is effectively avoided. Meanwhile, the limiting ring is used for limiting the expansion direction of the annular air bag, so that the annular air bag can only expand outwards, the annular air bag is prevented from expanding towards the center of the wellhead body, the protection effect of temporary supporting is improved, and the stability of the well wall is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of wellhead protection, and in particular to a wellhead reinforcement device for a mine. Background Art

[0002] When constructing a vertical shaft in a mine, since there is soil layer on the surface of the mine, before drilling, it is necessary to use equipment such as a soil tunneling machine to excavate a notch with a diameter larger than the diameter of the vertical shaft opening to provide enough space for subsequent rock layer drilling operations. Generally, a mine needs to excavate multiple vertical shafts. Unless it is a composite multi-functional tunneling machine, the soil tunneling machine and the rock layer drilling rig need to work in stages. There is a construction method in which a shaft-shaped soil notch is first dug on the mine soil layer by the soil tunneling machine. After the excavation is completed at this location, it is moved to the next location, and then the rock layer drilling rig follows here. In this way, the excavation and drilling work are carried out successively, and the working cycle is reasonably adjusted to avoid idling of personnel and equipment.

[0003] Since the stability of the soil layer is damaged after the soil layer is excavated, and the rock layer drilling rig does not necessarily start the rock layer drilling work immediately, it is necessary to temporarily reinforce the notch during this short blank time before the rock layer drilling rig works to ensure that the soil around the notch will not collapse and bury the notch, and avoid having to rework. Summary of the Invention

[0004] In order to overcome the disadvantages that when constructing a mine vertical shaft, the soil tunneling machine and the rock layer drilling rig work in stages, resulting in that the rock layer drilling rig does not necessarily start the rock layer drilling work immediately, and the stability is damaged after the soil layer is excavated, and there is soil collapse around the breach, the present invention provides a wellhead reinforcement device for a mine.

[0005] Technical Solution: A wellhead reinforcement device for a mine includes an installation ring; it further includes an annular airbag, a mounting plate, a waterproof cloth and a limiting ring; an annular airbag for supporting and reinforcing the well wall is arranged on the installation ring; a limiting ring for forcing the annular airbag to expand outwards is arranged inside the annular airbag; a connecting pipe is arranged on the installation ring; an air inlet is opened on the annular airbag, and one end of the connecting pipe is communicated with the air inlet of the annular airbag; a waterproof cloth for preventing surface water from flowing back is adhesively bonded to the surface of the installation ring through waterproof glue, and the other end of the waterproof cloth is adhesively bonded to a mounting plate through waterproof glue; insertion holes two and insertion holes one are respectively opened on the surfaces of the mounting plate and the installation ring opposite to each other; the number of insertion holes two is the same as the number of insertion holes one and the positions correspond one by one.

[0006] Further, it further includes a collecting ring; the bottom of the annular airbag is connected with a collecting ring, and a collecting groove is opened on the collecting ring; the bottom of the collecting groove is inclined with one end high and one end low, and a drain port is arranged at the lowest point of the bottom of the collecting groove; the collecting ring is fixedly connected with the limiting ring.

[0007] Further, it also includes a guiding piece; a circulation groove is formed on the annular airbag; the lower side of the circulation groove communicates with the collection groove; a guiding piece for guiding water flow is arranged on the mounting ring, and the guiding piece covers above the annular airbag.

[0008] Further, it also includes a connecting plate, a scraping plate and a sliding rail; a sliding groove is formed on the limiting ring; the sliding rail is arranged in the sliding groove; a slider is slidably connected to the sliding rail; a connecting plate is arranged on the slider; a clamping groove for inserting a tool inserting rod is formed on the connecting plate; the connecting plate is slidably connected through the scraping plate in a penetrating manner; the other end of the scraping plate is located in the collection groove.

[0009] Further, a foldable steel mesh is arranged inside the waterproof cloth.

[0010] Further, the mounting plate is inclined with the middle part being high and the surrounding being low.

[0011] Further, the sliding rail is hoisted at the top of the inner part of the sliding groove.

[0012] Further, the bottom inside the sliding groove is in a downward inclined state.

[0013] Further, a handle is arranged on the mounting plate.

[0014] Further, anti-slip patterns are arranged on the handle.

[0015] The beneficial effects are as follows: In the technical solution provided by the present invention: In the present invention, the air pump is used to inflate the annular airbag, so that it expands and presses against the well wall, compacts the well wall, and quickly realizes the temporary reinforcement of the wellhead body, effectively avoiding the collapse of the wellhead body. At the same time, the limiting ring is used to limit the expansion direction of the annular airbag, so that it can only expand outward, avoiding the annular airbag expanding towards the center of the wellhead body, thereby improving the protection effect of the temporary support and enhancing the stability of the well wall.

[0016] The mounting plate and the waterproof cloth are used to block the ground water flow from entering the wellhead body, effectively preventing rainwater from flowing back, and protecting the stability of the wellhead body. Even if the waterproof cloth is damaged, the water flow can be guided to the collection groove through the guiding piece and the circulation groove, avoiding the water flow directly scouring the well wall and further protecting the integrity of the well wall.

[0017] The water flow in the collection groove is guided to the lowest point through the inclined inner bottom surface, and is pumped away through the drainage port by connecting a suction device, ensuring that the inside of the wellhead body is dry and preventing water accumulation.

[0018] The inclination angle of the inner bottom surface of the collection groove is small, which is likely to cause sediment accumulation. However, through the design of the scraping plate and the tool inserting rod, the sediment can be regularly cleaned to prevent the collection groove from being blocked, ensuring its continuous ability to hold rainwater.

[0019] The present invention is applicable to wellhead bodies with different diameters, can operate stably in harsh environments, and has high practicability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. 1 is a three - dimensional structural schematic diagram of a wellhead reinforcement device for a mine according to the present invention; Figure 2 FIG. 2 is a placement state diagram of a wellhead reinforcement device for a mine according to the present invention; Figure 3 FIG. 3 is a three - dimensional structural schematic diagram of a combination of an annular airbag, a limiting ring, a collection ring, and a guiding piece according to the present invention; Figure 4 FIG. 4 is a three - dimensional structural schematic diagram of a combination of a mounting ring, an annular airbag, and a flow channel according to the present invention; Figure 5 FIG. 5 is a three - dimensional structural schematic diagram of a waterproof cloth according to the present invention; Figure 6 FIG. 6 is a three - dimensional structural schematic diagram of a combination of an annular airbag, a limiting ring, a collection ring, a guiding piece, a connecting plate, and a scraper according to the present invention; Figure 7 For the present invention Figure 6 Enlarged view of area A in FIG. Figure 8 FIG. 8 is a three - dimensional structural schematic diagram of a scraper according to the present invention; Figure 9 FIG. 9 is a three - dimensional structural schematic diagram of a combination of a limiting ring and a sliding groove according to the present invention.

[0021] Reference numerals in the drawings: 1 - mounting ring, 2 - wellhead body, 3 - annular airbag, 4 - mounting plate, 5 - waterproof cloth, 6 - limiting ring, 102 - collection ring, 103 - guiding piece, 104 - connecting plate, 105 - scraper, 106 - slide rail, 1001 - connecting pipe, 1002 - first jack, 3001 - flow channel, 4001 - second jack, 6001 - sliding groove, 10201 - collection groove, 10202 - drain port, 10401 - clamping groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions of the present invention will be further described below with reference to the accompanying drawings.

[0023] Embodiment As Figures 1-9 shown, a wellhead reinforcement device for a mine includes a mounting ring 1; It further includes an annular airbag 3, a mounting plate 4, a waterproof cloth 5 and a limiting ring 6; an annular airbag 3 is arranged on the inner ring surface of the mounting ring 1; a limiting ring 6 is arranged inside the annular airbag 3; a connecting pipe 1001 is arranged on the mounting ring 1; an air inlet is formed on the annular airbag 3, and one end of the connecting pipe 1001 is communicated with the air inlet of the annular airbag 3; the surface of the mounting ring 1 is adhesively bonded with a waterproof cloth 5 through waterproof glue, and the other end of the waterproof cloth 5 is adhesively bonded with a mounting plate 4 through waterproof glue; insertion holes two 4001 and insertion holes one 1002 are respectively formed on the surfaces of the mounting plate 4 and the mounting ring 1 that face each other; the number of insertion holes two 4001 is the same as that of insertion holes one 1002 and their positions correspond one by one; when a worker pulls up the mounting plate 4, a tool insertion rod is inserted into the insertion holes two 4001 and the insertion holes one 1002 to support and fix the mounting plate 4.

[0024] It further includes a collecting ring 102; the bottom of the annular airbag 3 is connected with a collecting ring 102, the collecting ring 102 is placed at the bottom of the well, and a collecting groove 10201 is formed on the collecting ring 102; the bottom of the collecting groove 10201 is inclined with one end high and the other end low, and a drain port 10202 is arranged at the lowest point of the bottom of the collecting groove 10201; the collecting ring 102 is welded to the limiting ring 6.

[0025] It further includes a guiding piece 103; a circulation groove 3001 is formed on the inner ring surface of the annular airbag 3; the lower side of the circulation groove 3001 is communicated with the collecting groove 10201; a guiding piece 103 is arranged on the inner ring surface of the mounting ring 1, and the guiding piece 103 covers the upper part of the annular airbag 3.

[0026] It further includes a connecting plate 104, a scraping plate 105 and a sliding rail 106; a sliding groove 6001 is formed on the limiting ring 6; a sliding rail 106 is arranged in the sliding groove 6001; a sliding block is slidably connected to the sliding rail 106; a connecting plate 104 is arranged on the sliding block; a clamping groove 10401 is formed on the connecting plate 104 for inserting a tool insertion rod; the scraping plate 105 is slidably connected to the connecting plate 104 in a penetrating manner; the other end of the scraping plate 105 is located in the collecting groove 10201.

[0027] A foldable steel mesh is arranged inside the waterproof cloth 5 to enhance the supporting effect of the waterproof cloth 5.

[0028] The mounting plate 4 is inclined with the middle part high and the surrounding parts low, which can guide the water flow away from the wellhead body 2.

[0029] The sliding rail 106 is hoisted at the inner top of the sliding groove 6001, which can reduce the adhesion of sediment and rainwater.

[0030] The inner bottom of the sliding groove 6001 is in a downward inclined state, which is convenient for the discharge of sediment, rainwater, etc.

[0031] A handle is arranged on the mounting plate 4, which is convenient for the worker to pull the mounting plate 4.

[0032] The handle is provided with anti-skid patterns to prevent the mounting plate 4 from slipping out of the hand when being lifted.

[0033] The process flow of this equipment for mine wellhead reinforcement is as follows: After the wellhead body 2 of 1-2 meters is excavated, the installation ring 1 and the annular airbag 3 are hoisted into place by the hoisting equipment. The installation ring 1 is placed on the ground of the wellhead body 2 and fixed to the ground by existing fixing structures such as pins and bolt columns. The annular airbag 3 is lowered into the wellhead body 2 close to the inner wall of the wellhead body 2. Then, the external air pump inflates the annular airbag 3 through the connecting pipe 1001 to expand the annular airbag 3. When the annular airbag 3 contacts the well wall, the annular airbag 3 reaches a full state, squeezes the soil on the well wall, compacts the well wall, and quickly assembles to achieve a short-term temporary reinforcement effect to prevent the wellhead body 2 from collapsing. In order to allow the annular airbag 3 to expand faster and more stably toward the inner wall of the wellhead body 2, the present invention provides a limit ring 6, which is placed on the inner ring surface of the annular airbag 3. The expansion direction of the annular airbag 3 is limited by the limit ring 6, so that the annular airbag 3 can only expand outward.

[0034] The wellhead body 2 is flush with the ground. When it rains, rainwater can easily flow back into the wellhead body 2, affecting the stability of the wellhead body 2. In order to solve this problem, the present invention designs a mounting plate 4 and a waterproof cloth 5. When workers know that it is about to rain by watching the weather forecast, they can put up a rain shelter on the wellhead body 2 that is temporarily shelved in advance to prevent rainwater from falling directly into the wellhead body 2. Then the workers lift the mounting plate 4 and unfold the waterproof cloth 5 to block the ground water from entering the wellhead body 2 through the waterproof cloth 5. Then, the plug rod is inserted into the two sockets 4001 and the one socket 1002 that are aligned up and down to support and fix the pulled mounting plate 4.

[0035] Furthermore, the waterproof cloth 5 and the metal mounting ring 1 are generally adhesively connected by waterproof glue to achieve stable connection and improve the sealing performance. During the unfolding and folding process, it is very difficult for the waterproof cloth 5 not to be pulled forcefully. Moreover, as the waterproof cloth 5 is repeatedly used in a harsh environment, the waterproof glue ages, and the sealing performance between the waterproof cloth 5 and the metal mounting ring 1 weakens, resulting in water leakage. In addition, due to the large volume of the waterproof cloth 5, it is generally very difficult to visually detect the damaged area on the waterproof cloth 5, and the regular inspection work is also very troublesome because of the large volume of the waterproof cloth 5. If the waterproof cloth 5 is damaged, water will enter the inside of the wellhead body 2 through the damaged area between the waterproof cloth 5 and the mounting ring 1 during rainy days. To solve this problem, the present invention designs a guiding piece 103. When water flows into the inside of the wellhead body 2 through the damaged area between the waterproof cloth 5 and the mounting ring 1, the guiding piece 103 guides the water to flow over the gap between the well wall and the annular airbag 3 and then flow towards the space between the annular airbag 3 and the limiting ring 6. A plurality of flow channels 3001 are formed on the side of the annular airbag 3 facing the limiting ring 6, and a collecting ring 102 is placed at the bottom of the wellhead body 2. The outer side of the collecting ring 102 is in contact with the well wall, and a collecting groove 10201 is formed on the collecting ring 102. The lower sides of the annular airbag 3 and the limiting ring 6 are supported on the collecting ring 102, and the water flows into the collecting groove 10201 through the guiding of the flow channels 3001. By guiding the water to flow between the limiting ring 6 and the annular airbag 3 through the guiding piece 103, the water flow can effectively avoid scouring the well wall.

[0036] Furthermore, the water flowing into the collecting groove 10201 is guided by the inclined inner bottom surface of the collecting groove 10201 itself, so that the water flows towards the lowest part of the collecting groove 10201, and then is pumped away through the drain port 10202 by an external suction device.

[0037] It should be noted that when it is not raining, the inside of the collecting ring 102 of the present invention can be used as a temporary storage device, allowing a small amount of water to be stored inside the collecting ring 102. However, when it is raining, before the worker raises the mounting plate 4 and the waterproof cloth 5, the worker needs to first connect the pipeline to the drain port 10202 of the suction device, and then turn on the suction device to make the suction device work continuously to prevent excessive accumulation of water inside.

[0038] Furthermore, due to the large diameter of the wellhead body 2 and in order to maximize the temporary reinforcement and protection of the well wall by the annular airbag 3, the area occupied by the collection tank 10201 is limited, that is, the depth of the collection tank 10201 is limited, resulting in a small inclination angle of the inner bottom surface of the collection tank 10201. Therefore, when the sediment in the water flow entering the collection tank 10201 flows towards the lowest point of the collection tank 10201, it may sink to the bottom halfway and be unable to move. To avoid excessive sediment accumulation inside the collection tank 10201, it is necessary to regularly check the sediment accumulation situation inside the collection tank 10201. When it is found that there is a large amount of sediment, the tool insertion rod can be inserted into the card slot 10401, and the connecting plate 104 is pushed by the worker holding the tool insertion rod, thereby driving the scraper 105 to rotate. The sediment in the collection tank 10201 is scraped by the scraper 105. During the process of pushing the sediment, the scraper 105 will move slightly up and down along with the inner bottom surface of the collection tank 10201, and finally most of the sediment is pushed towards the lowest point of the collection tank 10201. Then, a suction device is used to suck away the sediment to prevent excessive sediment accumulation in the collection tank 10201 from causing it to lose the ability to accommodate surface rainwater.

[0039] According to the above work process, we can know that the present invention has the following effects: The present invention inflates the annular airbag 3 through an air pump to make it reach a hard state, extrudes the soil on the well wall, tampers the well wall, enhances the temporary support effect on the well wall, and avoids the collapse of the wellhead body 2.

[0040] The expansion direction of the annular airbag 3 is restricted by the limiting ring 6, so that it can only expand outward, avoiding the annular airbag 3 expanding towards the center of the wellhead body 2, and improving the temporary support and protection effect.

[0041] When rainfall is predicted, the worker pulls up the mounting plate 4 and the waterproof cloth 5, unfolds the waterproof cloth 5, and then the worker inserts the insertion rod into the aligned jack two 4001 and jack one 1002 to fix the pulled-up mounting plate 4. The waterproof cloth 5 blocks the water flow from entering the wellhead body 2. If the waterproof glue ages after repeated use of the waterproof cloth 5 in a harsh environment, and the sealing performance between the waterproof cloth 5 and the metal mounting ring 1 weakens and water leakage occurs, at this time, the water flow is guided away from the well wall through the guiding piece 103 to avoid the water flow scouring the well wall. At the same time, through the guiding of the flow-through groove 3001, the water flow enters the collection tank 10201 to further protect the integrity of the well wall.

[0042] The additional technical effects of the present invention are as follows: Among them, as Figure 7 shown, the slide rail 106 is installed in a hoisting manner, which can effectively reduce soil adhesion.

[0043] Among them, as Figure 9As shown, the lower side of the chute 6001 is in a downwardly inclined state, which can enable the soil to quickly leave the inside of the chute 6001.

[0044] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all modifications and equivalent structures and functions.

Claims

1. A wellhead reinforcement device for a mine, comprising an installation ring (1); characterized in that: It also includes an annular airbag (3), a mounting plate (4), a waterproof cloth (5) and a limiting ring (6); an annular airbag (3) for supporting and strengthening the well wall is arranged on the mounting ring (1); a limiting ring (6) for forcing the annular airbag (3) to expand outwards is arranged inside the annular airbag (3); a connecting pipe (1001) is arranged on the mounting ring (1); an air inlet is formed on the annular airbag (3), and one end of the connecting pipe (1001) is communicated with the air inlet of the annular airbag (3); a waterproof cloth (5) for preventing surface water from flowing back is adhesively bonded to the surface of the mounting ring (1) through waterproof glue, and the other end of the waterproof cloth (5) is adhesively bonded to a mounting plate (4) through waterproof glue; insertion holes two (4001) and insertion holes one (1002) are respectively formed on the surfaces of the mounting plate (4) and the mounting ring (1) opposite to each other; the number of the insertion holes two (4001) is the same as that of the insertion holes one (1002) and their positions correspond one by one.

2. The wellhead reinforcement device for a mine according to claim 1, characterized in that: It also includes a collecting ring (102); the bottom of the annular airbag (3) is connected with the collecting ring (102), and a collecting groove (10201) is formed on the collecting ring (102); the bottom of the collecting groove (10201) is inclined with one end high and the other end low, and a drain port (10202) is arranged at the lowest point of the bottom of the collecting groove (10201); the collecting ring (102) is fixedly connected with the limiting ring (6).

3. The wellhead reinforcement device for a mine according to claim 2, characterized in that: It also includes a guiding piece (103); a flow-through groove (3001) is formed on the annular airbag (3); the lower side of the flow-through groove (3001) is communicated with the collecting groove (10201); a guiding piece (103) for guiding water flow is arranged on the mounting ring (1), and the guiding piece (103) covers above the annular airbag (3).

4. A wellhead reinforcement device for a mine according to claim 2, characterized in that: It also includes a connecting plate (104), a scraping plate (105) and a sliding rail (106); a sliding groove (6001) is formed on the limiting ring (6); a sliding rail (106) is arranged in the sliding groove (6001); a slider is slidably connected to the sliding rail (106); a connecting plate (104) is arranged on the slider; a clamping groove (10401) for inserting a tool inserting rod is formed on the connecting plate (104); the connecting plate (104) is slidably connected through the scraping plate (105) in a penetrating manner; the other end of the scraping plate (105) is located inside the collecting groove (10201).

5. The wellhead reinforcement device for a mine according to claim 1, characterized in that: A foldable steel mesh is arranged inside the waterproof cloth (5).

6. The wellhead reinforcement device for a mine according to claim 1, characterized in that: The mounting plate (4) is inclined with the middle part high and the surrounding parts low.

7. A wellhead reinforcement device for a mine according to claim 4, characterized in that: The sliding rail (106) is hoisted at the inner top of the sliding groove (6001).

8. The wellhead reinforcement device for a mine according to claim 7, characterized in that: The inner bottom of the sliding groove (6001) is in a downward inclined state.

9. A wellhead reinforcement device for a mine according to claim 6, characterized in that: A handle is arranged on the mounting plate (4).

10. A wellhead reinforcement device for a mine according to claim 9, characterized in that: The handle is provided with anti-slip patterns.

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