Dam seepage pressure monitoring device

Abstract

The utility model discloses a dam seepage pressure monitoring device, and relates to the technical field of water conservancy monitoring, and the dam seepage pressure monitoring device comprises an osmometer body, the top of which is a cable; one ends of the two inner semi-ring buckles are rotationally connected with each other, a clamping groove is formed in the other end of one inner semi-ring buckle, an unlocking hole communicated with the outside is formed in the inner top wall of the clamping groove, a clamping block is fixedly arranged at the other end of the other inner semi-ring buckle, and the clamping block can extend into the clamping groove and is clamped in the unlocking hole; at the moment, the two inner half ring buckles are buckled and abut against the top of the inner wall of the osmometer body; the number of the traction belts is at least two, and the traction belts are fixedly arranged on the inner semi-ring buckle; the number of the outer semi-ring buckles is two, one ends of the outer semi-ring buckles are rotationally connected with each other, the clamping groove is further formed in the other end of one outer semi-ring buckle, the clamping block is further fixedly arranged at the other end of the other outer semi-ring buckle, and after the two outer semi-ring buckles are buckled, the geotechnical cloth abuts against the inner semi-ring buckle. The osmometer has the effect of improving the connection stability of the cable of the osmometer after the osmometer is installed in the hole.

Description

Technical Field

[0001] This application relates to the technical field of water conservancy monitoring, and in particular to a device for monitoring seepage pressure in dams. Background Technology

[0002] Dams are important water conservancy facilities related to people's livelihoods. Therefore, after a dam is built, information related to the dam, especially safety-related information, will be monitored in real time. Among these, seepage pressure monitoring devices are used to monitor the seepage coefficient of the dam.

[0003] Monitoring seepage pressure in dams typically involves using piezometers, generally in two forms. One method involves drilling a borehole at a designated location, cleaning the borehole wall, and, depending on the situation, pre-burying a pipe. The borehole opening is then covered. When monitoring is needed, the fully submerged piezometer is lowered into the water in the borehole to take readings. The other method involves drilling and cleaning the borehole, completely wrapping the fully submerged piezometer with geotextile, lowering it to the bottom of the borehole, filling it with fine sand to compact it, pouring out water, and finally sealing the borehole with grout. A monitoring station is then set up near the borehole opening for real-time monitoring of seepage pressure.

[0004] Currently, seepage monitoring of dams in China generally adopts the second method, using vibrating wire piezometers. During installation, geotextile is typically required to tightly wrap the piezometer to reduce the intrusion of sediment and its impact on seepage pressure monitoring. During the lowering process, especially in deeper boreholes, multiple adjustments to the piezometer's position via cable are necessary, particularly during sediment settling. Because the piezometer's position can only be adjusted and pulled via its cable, the cable connection to the piezometer may loosen or detach during adjustment. More seriously, after borehole backfilling, signal loss may occur due to loose cable connections. Utility Model Content

[0005] The purpose of this utility model application is to improve the problem of loose connection caused by excessive cable pressure during the position adjustment of the piezometer in the borehole after it is wrapped with geotextile. This application provides a dam seepage pressure monitoring device.

[0006] The dam seepage pressure monitoring device provided in this application adopts the following technical solution:

[0007] A dam seepage pressure monitoring device, comprising

[0008] The piezometer body has cables at the top.

[0009] There are two inner half-rings, which are connected to each other by rotation at one end. One of the inner half-rings has a slot at the other end. The inner top wall of the slot has an unlocking hole that communicates with the outside. The other end of the other inner half-ring is fixed with a block. The block can extend into the slot and lock into the unlocking hole. At this time, the two inner half-rings are fastened together and pressed against the top of the inner wall of the piezometer body.

[0010] At least two towing straps are fixed to the inner half-ring buckle;

[0011] There are two outer half-rings, which are connected to each other at one end. A slot is also opened on the other end of one of the outer half-rings, and a locking block is fixed on the other end of the other outer half-ring. After the two outer half-rings are fastened, the geotextile is pressed against the inner half-ring.

[0012] Optionally, multiple rubber rings are fixed to the inner wall of the inner semi-ring.

[0013] Optionally, the inner half-ring buckle will press the traction belt tightly against the piezometer body.

[0014] Optionally, the inner half-ring buckle is provided with multiple intercepting protrusions on its circumferential outer wall, with the end of the intercepting protrusion furthest from the inner half-ring buckle being a pointed end.

[0015] Optionally, a bottom ring plate is fixed at the bottom of the outer half ring buckle, and after fastening, the bottom ring plate is opposite to the inner half ring buckle; a top ring plate is fixed at the top of the outer half ring buckle, and after fastening, the top ring plate is opposite to the inner half ring buckle.

[0016] Optionally, after the outer half-ring plate is fastened, the top ring plate will press the geotextile and traction belt tightly towards the cable.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] The inner half-ring is pre-fixed to the top of the piezometer body, thereby fixing the traction rope. The traction rope is clamped to the piezometer body, and the position of the piezometer body can be adjusted and pulled out by pulling the traction belt, which reduces cable pressure and improves the stability of the cable connection.

[0019] The outer half-ring buckle can press the geotextile into the inner half-ring plate, thereby improving the firmness of the geotextile in wrapping and fixing the piezometer.

[0020] After the outer half-ring is fastened, the inner half-ring can be wrapped by the bottom ring plate and the top ring plate, thereby improving the tightness of the geotextile wrapping. On the other hand, the top ring plate can also press the geotextile tightly against the cable, further reducing the probability of foreign objects entering the top of the piezometer body, improving the protection effect of the piezometer body, and thus improving the stability of the monitoring after the piezometer body is installed. Attached Figure Description

[0021] Figure 1This is a structural schematic diagram of an embodiment of this application;

[0022] Figure 2 This is a partial exploded sectional view showing the inner half of the panel;

[0023] Figure 3 yes Figure 2 The middle section A shows a magnified view of the card block.

[0024] In the diagram, 1. Inner half-ring buckle; 11. Slot; 12. Unlocking hole; 13. Block; 14. Rubber ring; 15. Interception protrusion; 2. Outer half-ring buckle; 3. Traction belt; 4. Bottom ring plate; 5. Top ring plate; 6. Piezometer body. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0026] This application discloses a dam seepage pressure monitoring device.

[0027] refer to Figure 1 and Figure 2 The dam seepage pressure monitoring device includes a piezometer body 6, an inner half-ring buckle 1, an outer half-ring buckle 2, and a traction belt 3. The top of the piezometer body 6 contains its own cable.

[0028] refer to Figure 2 and Figure 3 There are two inner half-rings 1 and two outer half-rings 2. One end of each inner half-ring 1 is rotatably connected to the other. One end of one inner half-ring 1 has a slot 11, and the inner wall of the slot 11 has an unlocking hole 12 that communicates with the circumferential outer wall of the inner half-ring 1. The other inner half-ring 1 has a locking block 13 fixed at its end away from its own rotation axis. The locking block 13 can extend into the slot 11 and lock into the unlocking hole 12, at which point the two inner half-rings 1 are engaged with each other. The two inner half-rings 1 are engaged with each other and clamped at the top of the circumferential outer wall of the piezometer body 6. Multiple rubber rings 14 are fixed to the circumferential inner wall of the inner half-ring 1, and the rubber rings 14 abut against the piezometer body 6. The traction rope is fixed at the bottom end of the inner half-ring 1 and extends upward after being pressed against the piezometer body 6 by the inner half-ring 1.

[0029] The traction belt 3 can be installed on the piezometer body 6 by fixing the two inner half-ring buckles 1 to the top part of the piezometer body 6. The unlocking hole 12 facilitates the disassembly of the inner half-ring buckles 1, and the rubber ring 14 effectively improves the tightness between the inner ring buckle and the piezometer body 6, thereby improving the stability of adjusting and pulling the position of the piezometer body 6 by the traction belt 3. Adjusting and pulling the position of the piezometer body 6 in the hole by the traction rope can effectively reduce the problem of poor cable contact and signal loss caused by the piezometer body 6 after the piezometer body 6 is installed and the hole is sealed.

[0030] refer to Figure 2 and Figure 3 Two outer half-ring buckles 2 are rotatably connected to each other. A slot 11 is also provided at the other end of one of the outer half-ring buckles 2, and a locking block 13 is fixed at the other end of the other outer half-ring buckle 2. The fastening and fixing method is the same as that of the inner half-ring buckle 1. Multiple intercepting protrusions 15 are fixed on the circumferential outer wall of the inner half-ring buckle 1. The end of the intercepting protrusion 15 away from the inner half-ring buckle 1 is set as a pointed end. After the two outer half-ring buckles 2 are rotatably fastened and fixed, the geotextile can be pressed and fixed against the inner half-ring buckle 1, and then cooperate with the intercepting protrusions 15 to achieve stable wrapping and installation of the geotextile on the piezometer body 6, and improve the sealing and protection effect of the piezometer body 6. A bottom ring plate 4 is fixed at the bottom of the outer half-ring buckle 2. After fastening, the bottom ring plate 4 is opposite to the inner half-ring buckle 1. A top ring plate 5 is fixed at the top of the outer half-ring buckle 2. After fastening, the top ring plate 5 is opposite to the inner half-ring buckle 1, and the top ring plate 5 presses the geotextile and the traction belt 3 towards the cable. After the outer half-ring 2 is fastened and fixed, the bottom ring plate 4 and the top ring plate 5 together wrap around the inner half-ring plate, thereby improving the firmness of the geotextile fixation and the stability of the position after the outer half-ring plate is fastened and fixed. The top ring plate 5 can also effectively press and seal the geotextile towards the cable, thereby sealing and protecting the top of the piezometer body 6, further improving the effect of wrapping and protecting the piezometer body 6.

[0031] The implementation principle of the dam seepage pressure monitoring device in this application embodiment is as follows: The traction belt 3 is bent to pass through the inner ring of the inner half-ring buckle 1, and then the two inner half-ring buckles 1 are fastened and fixed to the top part of the piezometer body 6 after immersion in water. Subsequently, geotextile is wrapped around the piezometer body 6 from the bottom, and then the geotextile is pressed and fixed to the inner half-ring buckle 1 by the two outer half-ring buckles 2. Simultaneously, the top ring plate 5 presses and fixes the geotextile and traction belt 3 towards the cable, thus achieving both the installation of the traction belt 3 on the piezometer body 6 and the stable wrapping and sealing of the piezometer body 6 by the geotextile. Furthermore, the traction belt 3 can be used to adjust the position and remove the piezometer body 6 from the borehole, reducing the pressure on the cable of the piezometer body 6 and ensuring a stable connection between the piezometer body 6 and the cable. Especially after the piezometer body 6 is compacted and sealed in the borehole, the seepage pressure monitoring station can stably read information, reducing the problem of signal loss caused by loosening of the cable of the piezometer body 6 after sealing.

[0032] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dam seepage pressure monitoring device, characterized in that: include The piezometer body (6) has a cable at the top; There are two inner half-ring buckles (1), which are connected to each other at one end. One of the inner half-ring buckles (1) has a slot (11) at the other end. The inner top wall of the slot (11) has an unlocking hole (12) that communicates with the outside. The other end of the other inner half-ring buckle (1) is fixed with a block (13). The block (13) can be inserted into the slot (11) and locked in the unlocking hole (12). At this time, the two inner half-ring buckles (1) are fastened together and pressed against the top of the inner wall of the piezometer body (6). At least two traction straps (3) are fixed on the inner half-ring buckle (1); There are two outer half-ring buckles (2), which are connected to each other at one end. The slot (11) is also opened at the other end of one of the outer half-ring buckles (2), and the block (13) is also fixed at the other end of the other outer half-ring buckle (2). After the two outer half-ring buckles (2) are fastened together, the geotextile is pressed against the inner half-ring buckle (1).

2. The dam seepage pressure monitoring device according to claim 1, characterized in that: Multiple rubber rings (14) are fixed on the inner wall of the inner half ring (1) in the circumferential direction.

3. The dam seepage pressure monitoring device according to claim 1, characterized in that: The inner half-ring (1) presses the traction belt (3) against the piezometer body (6).

4. The dam seepage pressure monitoring device according to claim 1, characterized in that: The inner half-ring buckle (1) has multiple intercepting protrusions (15) fixed on its outer circumferential wall, and the end of the intercepting protrusion (15) away from the inner half-ring buckle (1) is set as a pointed end.

5. The dam seepage pressure monitoring device according to claim 1, characterized in that: The bottom end of the outer half ring buckle (2) is fixed with a bottom ring plate (4). After fastening, the bottom ring plate (4) is opposite to the inner half ring buckle (1). The top end of the outer half ring buckle (2) is fixed with a top ring plate. After fastening, the top ring plate (5) is opposite to the inner half ring buckle (1).

6. A dam seepage pressure monitoring device according to claim 5, characterized in that: After the outer half-ring plate is fastened, the top ring plate (5) presses the geotextile and traction belt (3) against the cable.

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