Dam leakage monitoring device capable of changing elevation of weir plate of measuring weir
By designing a movable weir plate and locking mechanism, the flooding problem caused by the water-metering weir due to the high downstream tail water is solved, and the full-time observation and data accuracy are improved.
Patent Information
- Application Number
- CN202421606032.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-07-09
AI Technical Summary
Some water-metering weirs are flooded outflow due to excessive downstream scrubbing water, which affects the observation accuracy and may be flooded by downstream scrubbing water, resulting in the inability to observe normally during some periods.
A dam leakage monitoring device with changing the elevation of the weir plate is designed. By plugging the weir plate body to the inside of the weir groove, it can move up and down to adapt to the height of the downstream tail water, and locking the weir plate body through the coordinated settings of the latch ring, latch hole and latch body to prevent sliding.
Ensure that the water-metering weir can be observed throughout the whole period, avoid flooding and outflow, improve data continuity and accuracy, and extend the service life of the weir plate body and the latch body.
Smart Images
Figure CN222895857U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of measurement, in particular to a dam leakage monitoring device for changing the elevation of a weir plate of a water measuring weir. Background Art
[0002] After the reservoir is built, the changes in water level and foundation conditions will have a great impact on the working conditions of the dam, bedrock, dam shoulders, bank slopes and underground buildings. In particular, after the dam is filled with water, a hydraulic load is generated on the dam, and under the action of the upstream and downstream water level difference, seepage occurs on the dam body, dam foundation and around the dam. Therefore, according to the requirements of relevant specifications, it is necessary to observe and measure the seepage flow through the dam body, dam foundation and around the dam on both sides.
[0003] Seepage monitoring is the main project of dam safety monitoring. Seepage monitoring is one of the important safety assurance means for safe water storage and operation of dams. The water measuring weir is the main equipment for monitoring the seepage of dams. The measurement accuracy of the water measuring weir seepage is an important indicator of the safe operation of dams. The water measuring weir behind the dam and the cut-off wall are typical monitoring methods for the total seepage of the dam.
[0004] Some water measuring weirs are easily flooded due to the high channel or tailwater behind the weir, which affects the accuracy of the water measuring weir. Some water measuring weirs are easily flooded due to the high tailwater downstream. During certain periods of time, the water measuring weir may be submerged by the downstream tailwater, which makes it impossible to observe the water measuring weir normally.
[0005] Based on the above situation, the utility model designs a dam seepage monitoring device which changes the elevation of the weir plate of the water measuring weir, so as to ensure that the water measuring weir can be observed at all times and avoid flooding the outflow, thereby improving the continuity and accuracy of the data. Utility Model Content
[0006] In order to improve the above-mentioned problem that the water measuring weir behind the dam is affected by the excessively high tailwater downstream, the water measuring weir will form a submerged outflow, affecting the observation accuracy; if the tailwater rises further, the water measuring weir will be submerged, resulting in the problem that normal observation cannot be performed during some periods of time, the utility model provides a dam leakage monitoring device with a variable weir plate elevation.
[0007] The utility model provides a dam leakage monitoring device for changing the elevation of the weir plate of a water measuring weir, which adopts the following technical scheme:
[0008] A dam leakage monitoring device for changing the elevation of a weir plate of a water measuring weir comprises a weir groove and a ground, wherein the weir groove is arranged on the ground, a weir plate body is inserted into the inner side of the weir groove, a latch body is inserted between the weir plate body and the weir groove, a water cut-off wall is connected to the outer side of the weir groove, and a rectangular water diversion channel is connected to the rear end of the weir groove.
[0009] By adopting the above technical solution, by inserting the weir plate body into the inner side of the weir groove, the weir plate body can move up and down in the weir groove to adapt to the downstream tail water height, ensuring that the water measuring weir can be observed at all times and avoid flooding the outflow, thereby improving the continuity and accuracy of the data.
[0010] Optionally, the bottom of the front side of the weir plate body is connected to a first water stop portion, and both ends of the front side of the weir plate body are connected to second water stop portions.
[0011] By adopting the above technical solution, it is convenient to plug and connect the weir plate body and the weir groove.
[0012] Optionally, a gate groove matching the first water stop portion is formed at the bottom of the inner side of the weir groove, and rectangular shallow grooves matching the second water stop portion are formed at both ends of the inner side of the weir groove.
[0013] By adopting the above technical solution, when the weir plate body is inserted into the weir groove, the first water stop portion is located inside the gate groove, and the second water stop portion is located inside the rectangular shallow groove, so that the weir plate body and the weir groove are more closely connected.
[0014] Optionally, a plurality of latch rings are connected to the rear side of the weir plate body, a plurality of latch holes are provided at one end of the inner side of the weir groove close to the rectangular shallow groove, the row spacing of the latch holes is the same as the row spacing of the latch rings, a circular hole is provided in the middle of the latch ring, and the size of the latch hole is consistent with the size of the circular hole on the latch ring.
[0015] By adopting the above technical solution, the latch body is inserted into the corresponding latch ring and the latch hole, so that the position of the weir plate body can be locked to prevent the weir plate body from sliding.
[0016] Optionally, the weir plate body and the latch body are both made of stainless steel.
[0017] By adopting the above technical solution, the weir plate body and the latch body are effectively prevented from rusting due to long-term contact with water, thereby extending the service life of the weir plate body and the latch body.
[0018] Optionally, backfill rocks are installed at both ends of the cutoff wall away from the rectangular water diversion channel.
[0019] By adopting the above technical solution, the downstream support body of the cut-off wall is mainly used to ensure the stability of the cut-off wall itself.
[0020] In summary, the present invention has at least one of the following beneficial effects:
[0021] By sliding the weir plate body into the inner side of the weir groove, the weir plate body can move up and down in the weir groove to adapt to the downstream tailwater height, ensuring that the water measuring weir can be observed at all times and avoid flooding the outflow, thereby improving the continuity and accuracy of the data.
[0022] Through the matching arrangement of the latch ring, the latch hole and the latch body, when the weir plate body moves to a suitable elevation inside the weir groove, the latch body is inserted into the latch ring and the latch hole, thereby locking the weir plate body to prevent the weir plate body from sliding. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0024] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;
[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the weir groove and the water cutoff wall connection of the utility model;
[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the weir groove of the utility model;
[0027] Figure 4 This is a schematic diagram of the main structure of the weir groove of the utility model;
[0028] Figure 5 This is a schematic diagram of the top view of the weir groove structure of the utility model;
[0029] Figure 6 This is a schematic diagram of the side view structure of the weir groove of the utility model;
[0030] Figure 7 This is a schematic diagram of the three-dimensional structure of the weir plate body of the utility model Figure 1 ;
[0031] Figure 8 This is a schematic diagram of the main structure of the weir plate body of the utility model;
[0032] Fig. 9 This is a rear view structural diagram of the weir plate body of the utility model;
[0033] Fig.10 This is a schematic diagram of the three-dimensional structure of the weir plate body of the utility model Figure 2 ;
[0034] Fig.11This is a schematic diagram of the side structure of the weir plate body of the utility model;
[0035] Fig.12 This is a schematic diagram of the top view structure of the weir plate body of the utility model;
[0036] Fig.13 It is a schematic diagram of the latch structure of the utility model.
[0037] In the figure: 1. weir plate body; 101. first water stop; 102. second water stop; 103. latch ring; 2. weir groove; 201. latch hole; 202. gate groove; 203. rectangular shallow groove; 3. latch body; 4. cut-off wall; 5. rectangular water diversion channel; 6. backfill rock pile; 7. ground. DETAILED DESCRIPTION
[0038] The following is combined with Figure 1-13 The utility model is described in further detail.
[0039] Please refer to the attached figure in the instruction manual Figure 1 , Figure 3 , Figure 7 , Figure 8 , Fig.10 , Fig.11 and Fig.12 The utility model provides an embodiment: a dam leakage monitoring device for changing the elevation of a water-measuring weir plate, comprising a weir groove 2 and a ground 7, the weir groove 2 is arranged on the ground 7, a weir plate body 1 is slidably plugged into the inner side of the weir groove 2, a first water stop 101 is fixedly connected to the bottom of the front side of the weir plate body 1, and both ends of the front side of the weir plate body 1 are fixedly connected to the second water stop 102. It is convenient to plug and connect the weir plate body 1 and the weir groove 2.
[0040] Please refer to the attached figure in the instruction manual Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The bottom of the inner side of the weir groove 2 is provided with a gate groove 202 matching the first water stop 101, and both ends of the inner side of the weir groove 2 are provided with rectangular shallow grooves 203 matching the second water stop 102. When the weir plate body 1 is inserted into the inside of the weir groove 2, the first water stop 101 is located inside the gate groove 202, and the second water stop 102 is located inside the rectangular shallow groove 203, so that the weir plate body 1 and the weir groove 2 are more closely connected.
[0041] Please refer to the attached figure in the instruction manual Figure 1 , Figure 3 , Fig. 9 , Fig.11 , Fig.12 and Fig.13A latch body 3 is provided between the weir plate body 1 and the weir groove 2, a plurality of latch rings 103 are fixedly connected to the rear side of the weir plate body 1, a plurality of latch holes 201 are provided at one end of the inner side of the weir groove 2 close to the rectangular shallow groove 203, the row spacing of the latch holes 201 is the same as the row spacing of the latch rings 103, a circular hole is provided in the middle of the latch ring 103, and the size of the latch hole 201 is consistent with the size of the circular hole on the latch ring 103. The latch body 3 is provided inside the corresponding latch ring 103 and the latch hole 201, so that the position of the weir plate body 1 can be locked to prevent the weir plate body 1 from sliding.
[0042] Please refer to the attached figure in the instruction manual Figure 7 , Figure 8 , Fig.10 and Fig.13 The weir plate body 1 and the latch body 3 are both made of stainless steel, which effectively prevents the weir plate body 1 and the latch body 3 from rusting due to long-term contact with water, thereby extending the service life of the weir plate body 1 and the latch body 3.
[0043] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2 The outer side of the weir groove 2 is connected to a cut-off wall 4, the rear end of the weir groove 2 is connected to a rectangular water diversion channel 5, and both ends of the cut-off wall 4 away from the rectangular water diversion channel 5 are installed with backfilled rocks 6. They mainly serve as downstream supports for the cut-off wall 4 to ensure the stability of the cut-off wall 4.
[0044] Working principle: When in use, the cut-off wall 4 formed integrally with the weir groove 2 is a concrete structure, penetrating into the bedrock or relatively impermeable layer, with the top elevation higher than the downstream tailwater level, forming a closed cut-off wall 4, and the first water stop 101 at the bottom of the weir plate body 1 is inserted into the inside of the gate groove 202, and the second water stop 102 is inserted into the rectangular shallow groove 203, so that the weir plate body 1 can be slidably inserted into the inner side of the weir groove 2, and water is diverted through the rectangular water diversion channel 5. When the downstream tailwater is too high, the weir plate body 1 is driven to move up and down in the weir groove 2 to adapt to the downstream tailwater height, ensuring that the water measuring weir can be observed at all times and avoid flooding the outflow, thereby improving the continuity and accuracy of the data. When the weir plate body 1 moves to a suitable elevation on the inner side of the weir groove 2, the latch body 3 is inserted into the latch ring 103 and the latch hole 201, so that the weir plate body 1 can be locked to prevent the weir plate body 1 from sliding.
[0045] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.
Claims
1. A dam leakage monitoring device for changing the elevation of a water-measuring weir plate, comprising a weir groove (2) and a ground surface (7), wherein the weir groove (2) is arranged on the ground surface (7), and is characterized in that: A weir plate body (1) is inserted into the inner side of the weir groove (2), a latch body (3) is inserted between the weir plate body (1) and the weir groove (2), a water cutoff wall (4) is connected to the outer side of the weir groove (2), and a rectangular water diversion channel (5) is connected to the rear end of the weir groove (2).
2. A dam leakage monitoring device for changing the elevation of the weir plate of a water measuring weir according to claim 1, characterized in that: The bottom of the front side of the weir plate body (1) is connected to a first water stop portion (101), and both ends of the front side of the weir plate body (1) are connected to second water stop portions (102).
3. A dam leakage monitoring device for changing the elevation of the weir plate of a water measuring weir according to claim 2, characterized in that: The bottom of the inner side of the weir groove (2) is provided with a door groove (202) that matches the first water stop portion (101), and both ends of the inner side of the weir groove (2) are provided with rectangular shallow grooves (203) that match the second water stop portion (102).
4. A dam leakage monitoring device for changing the elevation of the weir plate of a water measuring weir according to claim 3, characterized in that: A plurality of latch rings (103) are connected to the rear side of the weir plate body (1); a plurality of latch holes (201) are provided at one end of the inner side of the weir groove (2) close to the rectangular shallow groove (203); the row spacing of the latch holes (201) is the same as the row spacing of the latch rings (103); a circular hole is provided in the middle of the latch ring (103); and the size of the latch hole (201) is consistent with the size of the circular hole on the latch ring (103).
5. The dam leakage monitoring device for changing the elevation of the weir plate of the water measuring weir according to claim 1 is characterized by: The weir plate body (1) and the latch body (3) are both made of stainless steel.
6. The dam leakage monitoring device for changing the elevation of the weir plate of the water measuring weir according to claim 1 is characterized by: Backfill rock piles (6) are installed at both ends of the cutoff wall (4) on the side away from the rectangular water diversion channel (5).