Water stopping device in drill hole
By using a wooden plug structure with annular grooves and a water-stop strip inside the borehole, combined with a check valve and filling material, the problems of high cost and poor water-stopping effect of borehole water-stopping devices are solved, achieving a highly efficient and convenient borehole water-stopping effect.
Patent Information
- Application Number
- CN202423306492.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing drilling water-stopping devices are costly and have unreliable connections. Traditional wooden plugs are easily punctured by water pressure, resulting in poor water-stopping effect and problems with backflow and material flow.
A wooden plug structure was designed with annular grooves and water-stop strips at both ends, and a feeding pipe and check valve in the center. The water-swellable water-stop strip is used to fit the hole wall, and cotton wool and grain are used to fill the gaps. The check valve is used to prevent backflow, and the multi-layer sealing achieves efficient water stoppage.
It achieves low-cost and convenient drilling and water-stopping effect, avoids gap penetration and backflow, has a simple structure, readily available materials, and is easy to construct.
Smart Images
Figure CN223510894U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of drilling water stop, especially relates to a drilling internal water stop device. BACKGROUND
[0002] In the process of geological research, ground drilling needs to be carried out, but water outflow at the bottom of the geological drilling is also prone to occur, in order to completely block the bottom water and carry out water-resisting and wall-protecting treatment on the upper goaf position, under the condition that the casing is not provided, a water stop plug needs to be used for water stop, but the specially-made water stop plug is too high in price, and if the drill rod and the water stop plug joint are not connected firmly, the water stop plug is prone to falling into the hole to cause secondary accidents. If the traditional wooden plug blocking method is used, there are many gaps between the wooden plug and the hole wall, when the bottom water pressure is too large (more than 2MPa), the water pressure will break the wooden plug and the hole wall, and the broken hole will continue to enlarge, so that the secondary water stop measures made on the upper part of the wooden plug are completely invalid. Therefore, it is urgent to improve the existing drilling internal water stop device and provide a drilling internal water stop device. SUMMARY
[0003] The drilling internal water stop device is reasonable in design, simple in structure, low in cost and convenient in construction, and can solve the problems in the prior art.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0005] A drilling internal water stop device, which comprises a wooden plug, annular grooves are formed in the outer walls of the upper and lower ends of the wooden plug, water stop belts are bonded in the two annular grooves, a feeding pipe is fixedly installed at the center of the wooden plug, a check valve is arranged in the middle of the feeding pipe, installation grooves are formed in the upper and lower ends of the wooden plug, stainless steel limiting discs are fixedly sleeved on the outer sides of the upper and lower ends of the feeding pipe, the two stainless steel limiting discs are located on the inner sides of the two installation grooves respectively, hard rubber is bonded and sleeved on the outer sides of the two stainless steel limiting discs, and the hard rubber is in sealing contact with the installation grooves.
[0006] As a preferred embodiment, the wooden plug is made of cylindrical dry willow wood, the diameter and length of the wooden plug are adapted to the hole diameter of the geological drilling, and the overall length of the wooden plug is 140cm.
[0007] As a preferred embodiment, the distance between the two annular grooves and the two ends of the wooden plug is 20cm, the groove depth of the annular groove is 20mm, and the groove width of the annular groove is 40mm.
[0008] As a preferred implementation form, the material of the water stop belt is strong soft rubber that expands when meeting water, and the two water stop belts correspond to the two annular grooves respectively.
[0009] As a preferred implementation form, the feeding pipe further comprises two stainless steel pipes, the check valve is fixed between the two stainless steel pipes and arranged in vertical direction, the diameter of the two stainless steel pipes is 20mm, the check valve is made of pure copper, and the total length of the feeding pipe is greater than the length of the wooden plug.
[0010] As a preferred implementation form, the inside of the stainless steel pipe is filled with cotton and grain.
[0011] Compared with the prior art, the utility model has the advantages of:
[0012] In the scheme of the utility model,
[0013] The inside of the bottommost drill rod and the inside of the feeding pipe are filled with materials such as cotton and grain, the drill rod is sleeved on the upper stainless steel pipe, the wooden plug is sent to the specified position in the drill hole, then the drill is controlled to pressurize to drive the materials in the drill rod and the feeding pipe into the drill hole below the wooden plug, at this time, under the driving of the upward water pressure, the materials can fill the gap between the wooden plug and the drill hole wall, and the two water stop belts can expand when meeting water until the two water stop belts are sealed with the hole wall, when the wooden plug is sealed by filling the cement ball and the red clay ball into the drill hole, the high-efficiency water stopping effect can be realized through multi-layer sealing.
[0014] The check valve can avoid the backflow of water and materials, compared with the prior art, the drill hole water stopping device has the advantages of simple structure, common materials, nearby material acquisition, low device cost, no influence on the structure in the hole, convenient construction, and good water stopping effect. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and the following will be described with reference to the drawings:
[0016] Fig. 1 It is a front view structure schematic diagram of the utility model;
[0017] Fig. 2 It is a front view structure schematic diagram of the utility model;
[0018] Fig. 3 It is a front view structure schematic diagram of the utility model in the installation state.
[0019] In the drawings:
[0020] 1. Cork; 2. Circular groove; 3. Waterstop; 4. Feeding pipe; 41. Check valve; 42. Stainless steel pipe; 5. Mounting groove; 6. Stainless steel limit plate; 7. Hard rubber. Detailed Implementation
[0021] The embodiments described below are merely some embodiments of the present invention and do not represent all embodiments consistent with the present invention. Exemplary embodiments will now be described with reference to the accompanying drawings:
[0022] like Figs. 1-3 As shown, the drilling internal water-stopping device of this utility model includes a wooden plug 1. Both the upper and lower outer walls of the wooden plug 1 are provided with annular grooves 2. Water-stopping strips 3 are bonded to both annular grooves 2. A feeding pipe 4 is fixedly installed at the center of the wooden plug 1. A check valve 41 is provided in the middle of the feeding pipe 4. Mounting grooves 5 are provided at both the upper and lower ends of the wooden plug 1. Stainless steel limiting discs 6 are fixedly fitted on the outer sides of both the upper and lower ends of the feeding pipe 4. The two stainless steel limiting discs 6 are located inside the two mounting grooves 5, and hard rubber 7 is bonded to the outer sides of both stainless steel limiting discs 6, sealing against the mounting grooves 5.
[0023] Based on the above structure, the material of the wooden plug 1 is cylindrical dried willow wood, and its diameter and length are adapted to the diameter of the geological borehole. The overall length of the wooden plug 1 is 140cm.
[0024] Based on the above structure, the two annular grooves 2 are 20cm away from both ends of the wooden plug 1, the groove depth of the annular groove 2 is 20mm, and its groove width is 40mm.
[0025] Based on the above structure, the waterstop 3 is made of strong soft rubber that expands when exposed to water, and the two waterstops 3 correspond to the two annular grooves 2 respectively.
[0026] In this embodiment, the wooden plug 1 is inserted into the designated position inside the drill hole. The upper and lower water-stop strips 3 can expand when exposed to water until they adhere to the hole wall and seal, which can enhance the water-stopping effect.
[0027] Based on the above structure, the feeding pipe 4 also includes two stainless steel pipes 42, and the check valve 41 is fixed between the two stainless steel pipes 42 and the three are arranged vertically. The diameter of the two stainless steel pipes 42 is 20mm, the check valve 41 is made of pure copper, and the total length of the feeding pipe 4 is greater than the length of the wooden plug 1.
[0028] In this embodiment, the check valve 41 can be used to prevent backflow of water and materials.
[0029] Based on the above structure, the interior of the stainless steel pipe 42 is filled with cotton wool and grain.
[0030] In the embodiment, the feeding pipe 4 is arranged to facilitate the feeding of the cotton and grain materials into the drill hole below the plug 1, and the materials can fill the gap between the plug 1 and the drill hole wall under the driving of the upward water pressure, so as to achieve the purpose of stable water stop, and the length of the feeding pipe 4 is greater than the length of the plug 1, the upper end of the stainless steel pipe 42 extends out of the plug 1 to facilitate the butt joint with the drill rod, and the lower end of the stainless steel pipe 42 extends out of the plug 1 to facilitate the feeding of the materials in the feeding pipe 4 into the drill hole, so as to avoid the blockage of the materials and affect the normal implementation.
[0031] The working principle of the utility model is as follows:
[0032] In use, first, the cotton and grain materials are inserted into the drill rod at the bottom of the drilling machine and the feeding pipe 4, then the drill rod is sleeved on the upper stainless steel pipe 42, so that the plug 1 can be sent into the designated position of the drill hole, then the drilling machine is controlled to pressurize to feed the materials in the drill rod and the feeding pipe 4 into the drill hole below the plug 1, at this time, the materials can fill the gap between the plug 1 and the drill hole wall under the driving of the upward water pressure, so as to avoid the plug 1 and the hole wall being broken due to the gap under the large water pressure, and the two water stop belts 3 can expand and seal with the hole wall when meeting water, and under the action of the check valve 41, the backflow of water and the backflow of materials can be avoided, and after water stop, the cement balls and red clay balls can be filled into the drill hole to seal the upper part of the plug 1, and through the multi-layer sealing, the efficient water stop effect can be achieved.
[0033] In summary, compared with the existing drill hole internal water stop device, the drill hole water stop device has a simpler structure, faster and more convenient operation, and all the devices used are common materials, which can be obtained nearby, the device has low cost and wide application range, and the installation of the device will not affect the internal structure of the drill hole, and has the advantages of convenient construction and good water stop effect.
[0034] The above is only a preferred embodiment of the utility model, and does not limit the protection scope of the utility model; any equivalent changes, modifications, replacements and variations made by the technical personnel in the technical field on the basis of the existing technology through logical analysis, reasoning or limited experiments according to the concept of the utility model shall be within the protection scope determined by the claims.
Claims
1. A water-stopping device for boreholes, comprising a wooden plug (1), characterized in that: The upper and lower ends of the wooden plug (1) are provided with annular grooves (2), and water-stop strips (3) are glued to the two annular grooves (2). A feeding pipe (4) is fixedly installed at the center of the wooden plug (1). A check valve (41) is provided in the middle of the feeding pipe (4). The upper and lower ends of the wooden plug (1) are provided with mounting grooves (5). Stainless steel limiting discs (6) are fixedly fitted on the outer sides of the upper and lower ends of the feeding pipe (4). The two stainless steel limiting discs (6) are located on the inner sides of the two mounting grooves (5). Hard rubber (7) is glued to the outer sides of the two stainless steel limiting discs (6). The hard rubber (7) abuts against the mounting groove (5) and seals.
2. The borehole internal water-stopping device according to claim 1, characterized in that: The plug (1) is made of cylindrical dried willow wood, and its diameter is adapted to the diameter of the geological borehole.
3. The borehole internal water-stopping device according to claim 1, characterized in that: The two annular grooves (2) are 20cm away from both ends of the wooden plug (1). The groove depth of the annular groove (2) is 20mm and its width is 40mm.
4. The borehole internal water-stopping device according to claim 1, characterized in that: The waterstop (3) is made of strong soft rubber that expands when exposed to water, and the two waterstops (3) correspond to the two annular grooves (2) respectively.
5. The borehole internal water-stopping device according to claim 1, characterized in that: The feeding pipe (4) also includes two stainless steel pipes (42), a check valve (41) is fixed between the two stainless steel pipes (42) and the three are arranged vertically. The diameter of the two stainless steel pipes (42) is 20mm. The check valve (41) is made of pure copper. The total length of the feeding pipe (4) is greater than the length of the wooden plug (1).