Ground drilling, grouting and water plugging device suitable for metal mine
By drilling on the surface and combining devices such as oil casing, grouting drill pipe and rubber umbrella sleeve, the problem of inconvenient maintenance of downhole grouting equipment has been solved, achieving efficient plugging and safe production, and reducing construction costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGMEIDI ECOLOGICAL ENVIRONMENT TECH CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-05-05
AI Technical Summary
Existing technologies for grouting and sealing in metal mines suffer from limitations in equipment selection, inconvenient maintenance, high grouting difficulty, and low efficiency, resulting in poor water inrush control and potentially causing well flooding accidents.
The method involves drilling holes on the ground and using components such as oil casing, grouting drill rods, and rubber umbrella sleeves. By drilling holes on the ground and inserting oil casings, combined with sealing with rubber umbrella sleeves, cement grout and pressurized water are injected using first and second grouting devices, respectively. The pressure difference of the pressure gauge is controlled to achieve effective sealing and efficient grouting.
It effectively seals up water inrushes in mining areas during ground construction, reduces drilling losses, improves grouting efficiency, lowers construction costs, and ensures safe production in mines.
Smart Images
Figure CN224200626U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mine water hazard prevention and control technology, and more specifically, to a grouting and water-blocking device suitable for surface drilling in metal mines. Background Technology
[0002] Typically, metallic minerals form primarily in dense, high-strength igneous rocks with low water absorption. These rocks are characterized by strong regionality, poor lithological homogeneity, and significant susceptibility to tectonic influences. However, during mine construction and production, metallic mines are often threatened by water inrushes, which in turn affects the safety of mine construction and production.
[0003] Currently, to reduce the impact of water inrush during the construction or mining of metal mines, existing water control grouting technologies often employ underground grouting for sealing. This method is limited by the small space in the underground drilling site and the difficulty in transporting materials, resulting in challenges such as difficulty in excavating and setting up the drilling site and restrictions on equipment selection. In addition, the lack of timely maintenance and repair of continuous grouting equipment leads to a high equipment failure rate and inconvenience in maintenance, which in turn results in difficulty in grouting, small grout volume, and poor treatment effect. If water inrush is encountered during drilling and cannot be sealed and controlled in a timely and effective manner, it will not only affect production but may also cause well flooding accidents. Utility Model Content
[0004] The purpose of this utility model is to provide a grouting and water-blocking device suitable for surface drilling in metal mines, so as to improve the aforementioned problem. To achieve this purpose, the technical solution adopted by this utility model is as follows:
[0005] This application provides a grouting and water-plugging device suitable for surface drilling in metal mines, comprising: an oil casing, a grouting drill rod, a rubber umbrella sleeve, a first grouting device, and a second grouting device. The grouting drill rod is disposed inside the oil casing; the rubber umbrella sleeve is disposed between the oil casing and the grouting drill rod, and is fitted onto the grouting drill rod, with its height lower than the top of the oil casing; the first grouting device is fixedly connected to the grouting drill rod via a pressure-resistant steel pipe; the second grouting device is fixedly disposed on the oil casing, and the connection point between the second grouting device and the oil casing is lower than the bottom of the rubber umbrella sleeve.
[0006] Optionally, the grouting drill pipe includes an outer drilling pipe and an inner grouting pipe, wherein the inner grouting pipe is disposed inside the outer drilling pipe.
[0007] Optionally, the first grouting device is fixedly connected to the grouting inner pipe via a first pressure-resistant steel pipe.
[0008] Optionally, a first air vent is provided on the first pressure-resistant steel pipe.
[0009] Optionally, the first air vent is fixedly connected to the first pressure gauge via a steel pipe of 10 mm or more.
[0010] Optionally, the oil casing is provided with a second air retention hole and a grouting hole, wherein the second air retention hole is positioned higher than the grouting hole and lower than the bottom end of the rubber umbrella sleeve.
[0011] Optionally, the second air vent is fixedly connected to the second pressure gauge via a steel pipe of 10 mm or more, and the grouting hole is fixedly connected to the second grouting pump via a second pressure-resistant steel pipe.
[0012] Preferably, a high-pressure valve is provided on the second pressure-resistant steel pipe, and the high-pressure valve is located between the second grouting pump and the oil casing.
[0013] Optionally, the first grouting device includes a first grouting pump and a first pressure gauge, wherein the first pressure gauge is disposed between the first grouting pump and the grouting drill rod.
[0014] Optionally, the second grouting device includes a second pressure gauge and a second grouting pump, wherein the second pressure gauge is disposed between the second grouting pump and the rubber umbrella sleeve.
[0015] The beneficial effects of this utility model are as follows:
[0016] This invention involves pre-drilling holes on the ground, lowering an oil casing close to the borehole wall, and then lowering a grouting drill pipe to a location with high drilling fluid consumption. A rubber umbrella seal is used to seal the space between the oil casing and the grouting drill pipe, forming an annulus section. A first grouting pump injects pre-prepared cement slurry into the aquifer or fractured section, thereby blocking external water inflow into the fractured zone of the mining area, reducing the impact of water inrush during excavation, and ensuring excavation safety. Simultaneously, a second grouting pump pressurizes water into the annulus section. Pressure gauge changes are observed and recorded during construction. A high-pressure valve controls the water flow rate of the second grouting pump into the annulus section, adjusting the annulus pressure to ensure that the pressure on the second pressure gauge is greater than that on the first pressure gauge. This prevents the cement slurry injected at the bottom of the hole from flowing back up, thereby improving grouting efficiency and reducing construction costs.
[0017] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing embodiments of the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a structural cross-sectional view of a grouting and water-blocking device for surface drilling in metal mines, as described in this embodiment of the present invention.
[0020] Figure 2 This is an enlarged schematic diagram of a grouting and water-blocking device for surface drilling in metal mines, as described in this embodiment of the present invention, for grouting and sealing of broken sections in metal mines.
[0021] Figure 3 This is a schematic diagram of the rubber umbrella cover structure.
[0022] The markings in the diagram are: 1. Oil casing; 2. Drilling outer casing; 21. Drill pipe joint collar; 3. Grouting inner casing; 4. Rubber umbrella sleeve; 41. Iron wire; 5. First pressure-resistant steel pipe; 6. First grouting pump; 7. First pressure gauge; 8. Second pressure gauge; 9. Second grouting pump; 10. High-pressure valve; 11. Second pressure-resistant steel pipe; 12. Grouting sealing point. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0024] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0025] Example 1:
[0026] like Figure 1 As shown in the figure, this embodiment provides a grouting and water plugging device suitable for surface drilling in metal mines, including: an oil casing 1, a grouting drill rod, a rubber umbrella sleeve 4, a first grouting device, and a second grouting device. The grouting drill rod is disposed inside the oil casing 1; the rubber umbrella sleeve 4 is disposed between the oil casing 1 and the grouting drill rod, and the rubber umbrella sleeve 4 is sleeved on the grouting drill rod, with its height lower than the top of the oil casing 1; the first grouting device is fixedly connected to the grouting drill rod through a pressure-resistant steel pipe; the second grouting device is fixedly disposed on the oil casing 1, and the connection between the second grouting device and the oil casing 1 is lower than the bottom of the rubber umbrella sleeve 4.
[0027] like Figure 1 and Figure 2 As shown, this utility model involves pre-drilling a hole on the ground, lowering the oil casing 1 along the wall, and then lowering the grouting drill rod to a location with high drilling fluid consumption, namely the grouting sealing point 12. The rubber umbrella sleeve 4 is used to seal the space between the oil casing 1 and the grouting drill rod, forming an annular section between the oil casing 1 and the grouting drill rod. The first grouting device is used to inject pre-prepared cement slurry into the aquifer or fractured section, and the second grouting device is used to pressurize the annular section between the oil casing 1 and the grouting drill rod with water to prevent the cement slurry injected at the bottom of the hole from flowing back up.
[0028] Example 2:
[0029] This embodiment is a further optimization based on Embodiment 1, specifically as follows: Figure 3 As shown, the grouting drill pipe can achieve a fixed connection of multiple pipe strings through the drill pipe joint 21 to meet the needs of different drilling depths in drilling and well workover operations.
[0030] Example 3:
[0031] This embodiment is a further optimization based on Embodiment 1, specifically as follows: Figure 3 As shown, an iron wire 41 is provided at the bottom end of the rubber umbrella cover 4. The iron wire 41 is tightly wrapped around the grouting drill rod to fix the rubber umbrella cover 4.
[0032] Example 4:
[0033] This embodiment is a further optimization based on Embodiment 1, specifically as follows: Figure 1 As shown, the grouting drill rod includes a drilling outer tube 2 and a grouting inner tube 3. The grouting inner tube 3 is disposed inside the drilling outer tube 2. The first grouting device is fixedly connected to the grouting inner tube 3 through a first pressure-resistant steel pipe 5.
[0034] During construction, pre-made cement slurry is injected into the grouting inner pipe 3 through the first grouting device to reduce slurry loss.
[0035] Example 5:
[0036] This embodiment is a further optimization based on Embodiment 1, specifically as follows: Figure 1 As shown, the first grouting device includes a first grouting pump 6 and a first pressure gauge 7, with the first pressure gauge 7 disposed between the first grouting pump 6 and the grouting drill rod; the second grouting device includes a second pressure gauge 8 and a second grouting pump 9, with the second pressure gauge 8 disposed between the second grouting pump 9 and the rubber umbrella sleeve 4.
[0037] During construction, the pre-made cement slurry is injected into the aquifer or fractured section through the first grouting pump 6, and the second grouting pump 9 is used to pressurize the annulus section of the oil casing 1-grouting drill rod. During the grouting process, the changes in the pressure gauge are observed and recorded, and the pressure of the second pressure gauge 8 is made greater than the pressure of the first pressure gauge 7 to prevent the cement slurry injected at the bottom of the hole from returning.
[0038] Example 6:
[0039] This embodiment is a further optimization based on embodiment 5, specifically as follows: Figure 1 As shown, a first air vent is provided on the first pressure-resistant steel pipe 5, and the first air vent is fixedly connected to the first pressure gauge 7 through a steel pipe of greater than or equal to 10 mm; a second air vent and a grouting hole are respectively provided on the oil casing 1, the second air vent is positioned higher than the grouting hole and lower than the bottom end of the rubber umbrella sleeve 4, the second air vent is fixedly connected to the second pressure gauge 8 through a steel pipe of greater than or equal to 10 mm, and the grouting hole is fixedly connected to the second grouting pump 9 through the second pressure-resistant steel pipe 11.
[0040] The pressure gauge can be connected to the first pressure-resistant steel pipe 5 or the oil casing 1 through a steel pipe with a diameter greater than or equal to 10 mm to detect the pressure of the fluid medium.
[0041] Example 7:
[0042] This embodiment is a further optimization based on embodiment 6, specifically as follows: Figure 1 As shown, a high-pressure valve 10 is installed on the second pressure-resistant steel pipe 11. The high-pressure valve 10 is located between the second grouting pump 9 and the oil casing 1 to control the water flow rate of the second grouting device to the annulus section of the oil casing 1-grouting drill rod, thereby adjusting the annulus pressure of the oil casing 1-grouting drill rod.
[0043] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0044] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.
[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
[0046] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A grouting and water-blocking device suitable for surface drilling in metal mines, characterized in that, include: Oil casing (1); Grouting drill pipe, wherein the grouting drill pipe is disposed inside the oil casing (1); A rubber umbrella sleeve (4) is provided between the oil casing (1) and the grouting drill rod. The rubber umbrella sleeve (4) is sleeved on the grouting drill rod and is provided at a height lower than the top of the oil casing (1). A first grouting device is fixedly connected to the grouting drill rod via a pressure-resistant steel pipe; The second grouting device is fixedly installed on the oil casing (1), and the connection between the second grouting device and the oil casing (1) is lower than the bottom end of the rubber umbrella sleeve (4).
2. The grouting and water-blocking device for surface drilling in metal mines according to claim 1, characterized in that: The grouting drill rod includes an outer drilling tube (2) and an inner grouting tube (3), with the inner grouting tube (3) located inside the outer drilling tube (2).
3. The grouting and water-blocking device for surface drilling in metal mines according to claim 2, characterized in that: The first grouting device is fixedly connected to the grouting inner pipe (3) via the first pressure-resistant steel pipe (5).
4. The grouting and water-blocking device for surface drilling in metal mines according to claim 3, characterized in that: A first air vent is provided on the first pressure-resistant steel pipe (5).
5. The grouting and water-blocking device for surface drilling in metal mines according to claim 4, characterized in that: The first air vent is fixedly connected to the first pressure gauge (7) through a steel pipe of 10 mm or more.
6. The grouting and water-blocking device for surface drilling in metal mines according to claim 1, characterized in that: A second air retention hole and a grouting hole are respectively provided on the oil casing (1). The second air retention hole is located higher than the grouting hole and lower than the bottom end of the rubber umbrella sleeve (4).
7. The grouting and water-blocking device for surface drilling in metal mines according to claim 6, characterized in that: The second air vent is fixedly connected to the second pressure gauge (8) through a steel pipe of 10 mm or more, and the grouting hole is fixedly connected to the second grouting pump (9) through a second pressure-resistant steel pipe (11).
8. The grouting and water-blocking device for surface drilling in metal mines according to claim 7, characterized in that: A high-pressure valve (10) is provided on the second pressure-resistant steel pipe (11), and the high-pressure valve (10) is located between the second grouting pump (9) and the oil casing (1).
9. The grouting and water-blocking device for surface drilling in metal mines according to claim 1, characterized in that: The first grouting device includes a first grouting pump (6) and a first pressure gauge (7), the first pressure gauge (7) being disposed between the first grouting pump (6) and the grouting drill rod.
10. The grouting and water-blocking device for surface drilling in metal mines according to claim 1, characterized in that: The second grouting device includes a second pressure gauge (8) and a second grouting pump (9), with the second pressure gauge (8) disposed between the second grouting pump (9) and the rubber umbrella cover (4).