Device for monitoring seepage slope of dam point

Abstract

The utility model provides a device for monitoring seepage gradient of a dam point. The device comprises an integral frame and monitoring equipment, the frame provides five monitoring equipment mounting positions, so that the measuring points of four monitoring equipment in the five monitoring equipment are positioned at four vertexes of the regular tetrahedron, and the measuring point of the fifth monitoring equipment is positioned at the centroid position of the regular tetrahedron; and the monitoring equipment adopts an osmometer. Compared with the traditional osmometer arrangement, the device disclosed by the utility model can be integrally and directly arranged on structural points such as a dam, a dam foundation and a side slope in a multi-point manner, and can monitor three-way seepage slopes, so that the precision is improved, and the reliability is obviously improved.

Description

Technical Field

[0001] The utility model relates to a monitoring device for the seepage gradient of a dam, which is mainly used for the point seepage gradient monitoring of earth-rock dams, dam foundations, slopes and other parts. Background Art

[0002] At present, there are about 100,000 reservoir dams built in China, and the safety of reservoir dams is closely related to people's lives.

[0003] Seepage failure is one of the main reasons for the failure of dams, especially the seepage failure problems of small earth dams and dikes are particularly serious. Therefore, monitoring the seepage gradient of dams and dam foundations during the operation period plays an important role in mastering the operation safety status of dams.

[0004] At the present stage, the seepage gradient monitoring is mainly realized through seepage pressure monitoring, that is, the seepage gradient is indirectly obtained through the seepage pressure difference between different scattered measuring points. This method mainly has two problems. On the one hand, the seepage path between different measuring points is relatively long, and the calculated value is the average seepage gradient between two points rather than the point seepage gradient. On the other hand, the error of the seepage pressure measurement value or the damage of a certain piezometer will directly lead to the inability to calculate the seepage gradient, and the reliability is not high. Content of the Utility Model

[0005] The main technical problem to be solved by the utility model: The utility model provides a seepage gradient monitoring device and a seepage gradient detection method, which can be integrally and directly installed at multiple positions of dams, dam foundations, slopes and other parts to directly monitor the point seepage gradient and improve the reliability.

[0006] Therefore, the utility model adopts the following technical solutions

[0007] A device for monitoring the point seepage gradient of a dam, characterized by comprising an integral frame and monitoring equipment;

[0008] The frame provides five monitoring equipment installation positions, so that the measuring points of four of the five monitoring equipment are located at the four vertices of a regular tetrahedron, and the measuring point of the fifth monitoring equipment is located at the centroid position of the regular tetrahedron;

[0009] The monitoring equipment adopts piezometers.

[0010] On the basis of adopting the above technical solutions, the utility model can also adopt the following further technical solutions, or use these further technical solutions in combination:

[0011] The integral frame includes a connecting body, five connecting pipes and an equipment placement pipe; the inside of the connecting body is hollow and provided with a cable outlet hole; the five connecting pipes are connected to the connecting body and communicated with the connecting body, and the monitoring equipment is installed in the equipment placement pipe to form five monitoring points.

[0012] The connecting body adopts a sphere.

[0013] The connecting body is located above the centroid position.

[0014] Due to the adoption of the technical solution of the present utility model, the present utility model can be integrally and directly installed at multiple positions on the dam, dam foundation, slope and other parts, and compared with the traditional piezometer layout, it can directly monitor the point seepage gradient, improving the reliability. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the framework of the seepage gradient monitoring device of the present utility model.

[0016] Figure 2 It is a schematic diagram of the piezometer arranged inside the equipment placement pipe of the present utility model. Detailed Embodiment

[0017] The specific structure of a point seepage gradient monitoring device provided in this embodiment is as Figure 1 , 2 shown. The device provided by the present utility model for monitoring the point seepage gradient of a dam includes an overall framework and monitoring equipment.

[0018] The overall framework of the monitoring device is composed of a connecting body 61, connecting pipes 62, and equipment placement pipes 63. The materials of each component can be (but are not limited to) aluminum alloy or stainless steel.

[0019] The inside of the connecting body 61 is hollow. The connecting body 61 includes 1 cable outlet hole 60, and the connecting body 61 can adopt a sphere.

[0020] Five connecting pipes 62 are welded to the connecting body 61; the ends of the connecting pipes 62 are welded to the equipment placement pipes 63. The diameter of the equipment placement pipes 63 is larger than that of the connecting pipes 62, and the two are welded and connected. Monitoring equipment is arranged in the equipment placement pipes 63 to form five monitoring points, namely detection point 1 of No. 1, detection point 2 of No. 2, detection point 3 of No. 3, detection point 4 of No. 4, and detection point 5 of No. 5.

[0021] The spatial position relationship of each component is specifically as follows: The monitoring points of No. 1 to No. 4 are located at the vertices of a regular tetrahedron in space; the monitoring point of No. 5 is at the centroid position of the regular tetrahedron, that is, the four vertices respectively make perpendicular lines to the bottom surface relative to the vertex, and the intersection position of the four perpendicular lines. The connecting body 61 is located inside the regular tetrahedron, preferably near the upper part of the centroid position of the regular tetrahedron.

[0022] The monitoring device uses an osmometer 65, whose end is a measuring point. The osmometer 65 can be connected and fixed to the equipment placement tube 63 by threaded connection, bonding, or direct placement and support. The cables of each osmometer 65 are led from the connecting tube 62 to the connector 61. The five cables introduced into the connector 61 are uniformly led out from the cable outlet hole 60 and connected to the data acquisition unit (such as a computer).

[0023] The installation method of the device for monitoring the seepage slope of a dam point according to the utility model is as follows:

[0024] 1) During the construction phase, the device for monitoring the seepage slope of the dam point of the utility model is directly and integrally buried in the monitoring part of the dam (it can be buried in any direction, but the three-dimensional coordinates of the position of each monitoring point need to be recorded);

[0025] 2) Connect the monitoring device cable to the data acquisition unit.

[0026] The above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above examples, and there are many variations. All variations that can be directly derived or associated with the contents disclosed by a person skilled in the art from the present invention should be considered as the protection scope of the present invention.

Claims

1. A device for monitoring the point seepage gradient of a dam, characterized in that It includes an overall framework and monitoring devices; The framework provides five installation positions for the monitoring devices, such that the measuring points of four of the five monitoring devices are located at the four vertices of a regular tetrahedron, and the measuring point of the fifth monitoring device is located at the centroid position of the regular tetrahedron; The monitoring devices use osmometers.

2. The device for monitoring the point seepage gradient of a dam according to claim 1, characterized in that The overall framework includes a connecting body, five connecting pipes, and a device placement pipe; the inside of the connecting body is hollow and provided with a cable outlet hole; The five connecting pipes are connected to the connecting body and communicate with the connecting body, and the monitoring devices are installed in the device placement pipe to form five monitoring points.

3. The device for monitoring the point seepage gradient of a dam according to claim 2, characterized in that The connecting body uses a sphere.

Images