Plugging structure for comprehensive hydraulic test of water curtain system of underground water-sealed cavern oil depot
By setting up rock keyways and sealing walls on both sides of the water curtain tunnel and pre-burying grouting pipes, the problem of increased water seepage under all working conditions of the water curtain system was solved, and the seepage volume was reduced and operating costs were saved.
Patent Information
- Application Number
- CN202520461817.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-17
AI Technical Summary
In existing technologies, the water curtain system of underground water-sealed rock cavern oil depots cannot effectively detect seepage under all operating conditions, resulting in increased seepage in the main cavern and increased operating costs in the later stages of the project.
Keyways for surrounding rock are set on both sides of the water curtain tunnel, and sealing walls are constructed in between. Grouting pipes, conduit pipes, water inlet pipes and pressure testing pipes are pre-embedded. Comprehensive hydraulic tests are conducted through these pipes to investigate the location and amount of seepage.
It reduced the amount of water seepage in the main tunnel, decreased the operating costs in the later stages of the project, and enabled a simple and easy-to-implement comprehensive hydraulic test and early detection of seepage points.
Smart Images
Figure CN223793531U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of water conservancy and hydropower, and particularly relates to a sealing structure for comprehensive water force test of a water curtain system of an underground water-sealed rock-cave oil depot. BACKGROUND
[0002] During main cavern excavation construction of the underground water-sealed rock-cave oil depot, the water curtain system arranged at the upper part of the main cavern needs to be comprehensively flushed, mainly including water supply under pressure of the water curtain borehole and water storage of the water curtain system bottom plate to cover the water curtain hole. The flushing method cannot achieve the later-stage full-condition operation of the water curtain system, and the water seepage amount of the main cavern under the full condition of the water curtain system cannot be checked. After the full-condition water storage is completed by the roadway sealing plug, the water seepage amount in the main cavern often increases. Since the roadway sealing plug cannot enter the main cavern for grouting and water stopping construction of the water seepage point, the increase of the water seepage amount of the main cavern brings great storage reduction and high operation cost to the later-stage operation of the project. CONTENT OF THE UTILITY MODEL
[0003] To solve or partially solve the problems in the prior art, the application provides a sealing structure for comprehensive water force test of a water curtain system of an underground water-sealed rock-cave oil depot, which can reduce the water seepage amount of the main cavern during the comprehensive water force test of the water curtain system of the underground water-sealed rock-cave oil depot, and further reduce the later-stage operation cost of the project.
[0004] The application discloses a sealing structure for comprehensive water force test of a water curtain system of an underground water-sealed rock-cave oil depot, which comprises a water curtain roadway, a surrounding rock key groove is arranged at both sides of the roadway of the water curtain roadway, a sealing wall is arranged between the two key grooves of the surrounding rock key groove, a grouting pipe, a threading pipe, a manhole, a water inlet pipe and a pressure measuring pipe are embedded in the sealing wall, the grouting pipe is arranged at the middle lower part close to one side of the surrounding rock key groove, the threading pipe is arranged at the central middle lower part of the sealing wall, the water inlet pipe and the pressure measuring pipe are arranged at the middle lower part close to the other side of the surrounding rock key groove, and the manhole is arranged at the middle lower part of the sealing wall.
[0005] Optionally, the middle part of the threading pipe is concave downward.
[0006] Optionally, the manhole is a pre-embedded pipe with a diameter of phi 914 mm.
[0007] Optionally, flanges are welded at the ports of the pipes.
[0008] Optionally, the surrounding rock key groove is in a V-shaped form.
[0009] The technical scheme provided by the application can have the following beneficial effects:
[0010] The application can reduce the water seepage amount of the main cavern, and further reduce the operation cost in the later stage of the project, by setting the structure, when the water curtain system of the underground water-sealed cavern oil depot is comprehensively hydraulically tested. The structure has the advantages of simple structure, easy implementation, convenient installation of the pre-buried pipe, comprehensive hydraulic test through the water curtain system, and early comprehensive detection of the water seepage position and water seepage amount of the main cavern.
[0011] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory and are not restrictive of the application. BRIEF DESCRIPTION OF DRAWINGS
[0012] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout the figures, and wherein:
[0013] Figure 1 is a structural schematic diagram of an embodiment of the application;
[0014] Reference Signs:
[0015] 1, water curtain tunnel; 2, surrounding rock key groove; 3, plugging wall; 4, grouting pipe; 5, threading pipe; 6, manhole; 7, water inlet pipe; 8, pressure measuring pipe. DETAILED DESCRIPTION
[0016] Embodiments of the present application will be described in more detail by referring to the attached drawings. Although embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.
[0017] It should be understood that although the terms "first", "second", "third" and the like can be used in this application to describe various information, these information should not be limited by these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information, without departing from the scope of the present application. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.
[0018] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.
[0019] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0020] To address the aforementioned issues, this application provides a sealing structure for a comprehensive hydraulic test of a water curtain system for an underground water-sealed rock cavern oil depot. The technical solution of this application embodiment is described in detail below with reference to the accompanying drawings.
[0021] like Figure 1 The diagram illustrates a sealing structure for a comprehensive hydraulic test of a water curtain system in an underground water-sealed rock cavern oil depot. The structure includes a water curtain tunnel 1. Rock keyways 2 are embedded into the side walls of both sides of the water curtain tunnel 1. The rock keyways 2 are V-shaped, with a net width of 4.0m and a maximum depth of 1.0m. A sealing wall 3, 4.0m thick and constructed of C30 reinforced concrete, is poured between the two keyways of the rock keyways 2. The sealing wall 3 is pre-embedded with grouting pipes 4, conduit 5, manholes 6, water inlet pipes 7, and pressure testing pipes 8. The grouting pipes 4 are located in the lower-middle part near the rock keyways 2, specifically PVC pipes with a diameter of φ50mm and a spacing of 1.5m are pre-embedded at the deepest point of the rock keyways 2. The conduit 5, made of DN200mm steel pipe, is located in the lower-middle center of the sealing wall 3 and is recessed downwards in the middle. The inlet pipe 7 and pressure testing pipe 8 are located in the lower middle part of the side near the keyway 2 in the surrounding rock, using DN150mm pipes. The manhole 6 is located in the lower middle part of the sealing wall 3, using a pre-embedded pipe with a diameter of φ914mm. In this application, flanges are welded to the ends of each pipe to facilitate subsequent connection to other components. It should be noted that grouting should be performed no less than 7 days after the completion of the reinforced concrete sealing.
[0022] This application, by setting up this structure, can reduce the increase in seepage in the main cavern during a comprehensive hydraulic test of the water curtain system in an underground water-sealed rock cavern oil depot, thereby reducing the later operating costs of the project. This structure has the advantages of simple construction, ease of implementation, convenient installation of pre-embedded pipes, the ability to conduct comprehensive hydraulic tests through the water curtain system, and the ability to thoroughly investigate seepage points and amounts in the main cavern in advance.
[0023] Finally, it should be noted that in this document, relationships such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "include," "contain," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.
[0024] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.
[0025] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A plugging structure for overall hydraulic test of water curtain system of underground water-sealed cavern oil depot, comprising a water curtain gallery (1), characterized in that: The water curtain tunnel (1) is provided with surrounding rock key grooves (2) on both sides of the tunnel, a sealing wall (3) is arranged between the two key grooves (2), a grouting pipe (4), a threading pipe (5), a manhole (6), a water inlet pipe (7) and a pressure measuring pipe (8) are embedded in the sealing wall (3), the grouting pipe (4) is arranged at the middle lower part near one side of the surrounding rock key groove (2), the threading pipe (5) is arranged at the central middle lower part of the sealing wall (3), the water inlet pipe (7) and the pressure measuring pipe (8) are arranged at the middle lower part near the other side of the surrounding rock key groove (2), and the manhole (6) is arranged at the middle lower part of the sealing wall (3).
2. The containment structure for overall hydrodynamic testing of a water curtain system for a groundwater sealed cavern oil reservoir according to claim 1, characterized in that: The middle part of the threading pipe (5) is concave downward.
3. The containment structure for overall hydrodynamic testing of a water curtain system for a groundwater sealed cavern oil reservoir according to claim 1, characterized in that: The manhole (6) is a pre-embedded pipe with a diameter of φ914mm.
4. The containment structure for overall hydrodynamic testing of a water curtain system for a groundwater sealed cavern oil reservoir according to claim 3, characterized in that: Flanges are welded on the ports of the pipes.
5. The containment structure for overall hydrodynamic testing of a water curtain system for a groundwater sealed cavern oil reservoir in accordance with claim 1, wherein: The surrounding rock key groove (2) is in a V shape.