Device and method for solving mutual interference between manual and automatic observation of pressure measuring tube

Abstract

The present invention discloses a device for solving the mutual interference between manual and automated observation of a piezometer, and relates to the technical field of underground water level monitoring in water diversion hubs, pumping stations, levees, reservoirs, foundation pits, and slopes. It includes a piezometer, a cable protection tube, a piezometer, and an orifice protection device; the top of the piezometer has a water level gauge measuring hole and a piezometer outlet hole; the piezometer cable enters the cable protection tube and is connected to the automated device; the piezometer positions the cable protection tube on one side of the piezometer; the orifice protection device includes a concrete pier and an orifice protection tube. The present invention can avoid damage to the water level gauge and the piezometer during manual observation, and can effectively save costs and labor. The present invention also relates to a method for using the device for solving the mutual interference between manual and automated observation of a piezometer.

Description

Technical Field

[0001] The present invention relates to the technical field of underground water level monitoring in water diversion hubs, pumping stations, levees, reservoirs, foundation pits and slopes, and more specifically, it is a device for solving the mutual interference between manual and automatic observation of pressure measuring tubes. The present invention also relates to a method for using the device for solving the mutual interference between manual and automatic observation of pressure measuring tubes. Background Art

[0002] Pressure gauges are an important means of monitoring groundwater levels in water diversion hubs, hydropower generation, embankments, reservoirs, foundation pits, and slopes. Depending on different geological conditions and building types, there are two methods for data collection: manual data collection and automated data collection.

[0003] During the excavation of deep foundation pits, the specification requires that the observation frequency of foundation pits with an excavation depth of more than 10m should be twice a day. In addition, when the groundwater level continues to drop during the excavation of the foundation pit or encounters special working conditions, the observation frequency needs to be increased. This is an urgent need to install automated observation equipment for monitoring projects with a wide range of work, tight personnel, strong construction, and fast progress. In order to achieve automated observation, a piezometer needs to be installed inside the piezometer. According to the specification requirements, the water level elevation in the piezometer hole needs to be manually checked regularly with an electric water level gauge.

[0004] The difficulty of simultaneous manual and automated observation of the piezometer mainly lies in the following: the piezometer cable, steel wire rope and manual water level gauge ruler connected to the piezometer hole are entangled, making it difficult to collect real data, and it is easy to damage the electric water level gauge or piezometer, making it impossible to know the integrity of the instrument in a timely manner.

[0005] Therefore, it is necessary to develop a device to solve the mutual interference between manual and automated observation of pressure measuring tubes. Summary of the invention

[0006] The first purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology and provide a device to solve the mutual interference between manual and automatic observation of pressure measuring tubes.

[0007] The second object of the present invention is to provide a method for using the device to solve the mutual interference between manual and automatic observation of the pressure measuring tube.

[0008] In order to achieve the above-mentioned first purpose, the technical solution of the present invention is: a device for solving the mutual interference between manual and automated observation of a piezometer, characterized in that it includes a piezometer with one end located outside the ground and the other end extending into the ground, a cable protection tube with one end located outside the piezometer and the other end located at the bottom of the piezometer, a piezometer located at the bottom of the piezometer, and an orifice protection device;

[0009] The top of the pressure measuring tube is provided with a water level gauge measuring hole and a piezometer outlet hole; the cable protection tube is connected to the piezometer outlet hole;

[0010] The osmometer cable enters the cable protection tube through the bottom of the cable protection tube, passes through the osmometer outlet hole and is connected to the automation device;

[0011] The pressure measuring tube has a U-shaped buckle inside, and the pressure measuring tube positions the cable protection tube on one side inside the pressure measuring tube through the U-shaped buckle, and the cable protection tube can move up and down in the pressure measuring tube;

[0012] The orifice protection device comprises a concrete pier with one end located outside the ground and the other end extending into the ground, and an orifice protection pipe with one end located outside the concrete pier and the other end located inside the concrete pier; the top end of the pressure measuring pipe is located inside the orifice protection pipe.

[0013] In the above technical solution, a positioning cover is provided on the top of the pressure measuring tube; and the cable protection tube is connected to the piezometer outlet hole on the positioning cover.

[0014] In the above technical solution, the middle part of the U-shaped buckle is sleeved on the cable protection tube, and the two ends are close to the inner wall of the pressure measuring tube.

[0015] In the above technical solution, there is a socket at the bottom of the pressure measuring tube; the socket includes a buckle, a cable protection tube positioning hole at one end of the buckle, and a piezometer positioning hole at the other end of the buckle; the cable protection tube positioning hole is sleeved on the cable protection tube; the piezometer positioning hole is sleeved on the piezometer.

[0016] In the above technical solution, there is cement mortar between the lower half of the orifice protection tube and the pressure measuring tube.

[0017] In the above technical solution, a circle of steel bar heads is provided on the hole protection tube located in the concrete pier.

[0018] In order to achieve the above second purpose, the technical solution of the present invention is: a method for using a device to solve the mutual interference between manual and automatic observation of a pressure measuring tube, characterized in that it includes the following steps:

[0019] Step 1: Complete the drilling according to the design drawing requirements, and use Φ70PE pipe for the pressure measuring pipe installation;

[0020] Step 2: Install a Φ20PE cable protection tube in the piezometer tube, and use a U-shaped clip to position the cable protection tube on one side of the piezometer tube. The cable protection tube can move up and down in the piezometer tube. There is space on the other side of the piezometer tube for manual observation with a water level gauge. Use a holder to fix the piezometer.

[0021] Step 3: Cast the orifice protection device and reserve the water level gauge measurement hole and the piezometer outlet hole;

[0022] Step 4: The piezometer cable enters the cable protection tube through the bottom of the cable protection tube, passes through the piezometer outlet hole and is connected to the automation device to realize automatic data collection;

[0023] Step 5: Place the water level gauge into the measuring hole of the water level gauge until it reaches the water surface elevation. Wait for the water level gauge to sound a prompt before taking manual readings to achieve manual observation.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1) The piezometer in the traditional pressure measuring tube needs to be pulled by a steel wire rope, and the steel wire rope is mainly stressed; the present invention fixes the piezometer on the holder, and the piezometer cable is led out from the cable protection tube, which can avoid the entanglement between the water level gauge of the electric water level meter and the piezometer cable during manual observation, affecting the accuracy of the observation data.

[0026] 2) The present invention can avoid damage to the water level meter and the piezometer during manual observation, and can effectively save costs and labor.

[0027] 3) The present invention can utilize the piezometer to realize continuous and automatic observation of the pressure measuring tube, which will greatly improve the observation efficiency.

[0028] 4) The present invention can compare the data obtained through manual observation and automatic collection, verify the integrity of the instrument and equipment, and avoid collecting erroneous data.

[0029] 5) In long-term monitoring of buildings, there are problems such as the piezometer being damaged and unable to be repaired or replaced. The present invention can repeatedly replace the sensor, effectively solving the above problems.

[0030] 6) As time goes by, silt will accumulate in the pressure measuring tube, affecting the normal operation of the piezometer. At this time, you only need to use an air pump to connect the water level gauge measuring hole to pump air in and flush the silt in the piezometer. In serious cases, the piezometer can be pulled out for cleaning, which is convenient, fast and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention.

[0032] Figure 2 It is a structural schematic diagram of the orifice protection device.

[0033] Figure 3 This is a schematic diagram of the structure of the water level meter measuring hole and the piezometer outlet hole.

[0034] Figure 4 It is a schematic diagram of the structure of the U-shaped buckle.

[0035] Figure 5 It is a structural diagram of the card holder. DETAILED DESCRIPTION

[0036] The following detailed description of the implementation of the present invention is made in conjunction with the accompanying drawings, but they do not constitute a limitation of the present invention and are only given as examples. At the same time, the advantages of the present invention will become clearer and easier to understand through the description.

[0037] Referring to the attached drawings, it can be seen that the device for solving the mutual interference between manual and automatic observation of the piezometer is characterized by comprising a piezometer 1 with one end located outside the ground and the other end extending into the ground, a cable protection tube 2 with one end located outside the piezometer 1 and the other end located at the bottom of the piezometer 1, a piezometer 3 located at the bottom of the piezometer 1, and an orifice protection device 5;

[0038] The top of the pressure measuring tube 1 is provided with a water level gauge measuring hole 41 and a piezometer outlet hole 42; the cable protection tube 2 is connected to the piezometer outlet hole 42; and a sealing cover is provided on the water level gauge measuring hole 41;

[0039] The cable of the osmometer 3 enters the cable protection tube 2 through the bottom of the cable protection tube 2, passes through the osmometer outlet hole 42 and is connected to the automation device;

[0040] The pressure measuring tube 1 has a U-shaped buckle 11 inside, and the pressure measuring tube 1 positions the cable protection tube 2 on one side inside the pressure measuring tube 1 through the U-shaped buckle 11, and the cable protection tube 2 can move up and down inside the pressure measuring tube 1;

[0041] The orifice protection device 5 includes a concrete pier 51 with one end located outside the ground and the other end extending into the ground, and an orifice protection pipe 52 with one end located outside the concrete pier 51 and the other end located inside the concrete pier 51; the top end of the pressure measuring tube 1 is located inside the orifice protection pipe 52.

[0042] A positioning cover 53 is provided on the top of the pressure measuring tube 1; the cable protection tube 2 is connected to the piezometer outlet hole 42 on the positioning cover 53; and the positioning cover 53 is made of PVC material.

[0043] The middle part of the U-shaped buckle 11 is sleeved on the cable protection tube 2 , and the two ends are closely attached to the inner wall of the pressure measuring tube 1 .

[0044] There is a holder 6 at the bottom of the pressure measuring tube 1; the holder 6 includes a buckle 61, a cable protection tube positioning hole 62 at one end of the buckle 61, a piezometer positioning hole 63 at the other end of the buckle 61, and a bolt 64 between the cable protection tube positioning hole 62 and the piezometer positioning hole 63; the buckle 61 is 8-shaped, and the bolt 64 passes through the connection between the protection tube positioning hole 62 and the piezometer positioning hole 63; the cable protection tube positioning hole 62 is mounted on the cable protection tube 2; the piezometer positioning hole 63 is mounted on the piezometer 3.

[0045] There is cement mortar 521 between the lower half of the orifice protection tube 52 and the pressure measuring tube 1 .

[0046] The orifice protection pipe 52 located in the concrete pier 51 has a circle of three steel bar heads 522 .

[0047] The method for using the device for solving the mutual interference between manual and automatic observation of the pressure measuring tube is characterized by comprising the following steps:

[0048] Step 1: Complete the drilling according to the design drawing requirements. The diameter of the drilled hole is greater than Φ76. The pressure measuring tube 1 is installed with a Φ70 PE pipe and is welded and lengthened with a hot melt gun. The first permeable pipe (the first permeable pipe has a hole diameter of 10mm, and 4 to 5 holes per circle) and fine sand backfill are required to be installed 3 meters below the bottom of the pressure measuring tube 1;

[0049] Step 2: Install a Φ20PE cable protection tube 2 in the pressure measuring tube 1, and process the connection of the cable protection tube 2 into a threaded thread and a matching joint for docking and lengthening; use a U-shaped buckle 11 to position the cable protection tube 2 on one side of the inside of the pressure measuring tube 1, and the cable protection tube 2 can move up and down in the pressure measuring tube 1. There is space on the other side of the pressure measuring tube 1 for manual observation with a water level gauge; use a holder 6 to fix the piezometer 3; leave a 50cm second permeable pipe under the holder 6 (the second permeable pipe has plum blossom holes, and the distance between the plum blossom holes is between 5cm and 10cm);

[0050] Step 3: Cast the orifice protection device 5, install the top positioning cover 53 of the pressure measuring tube 1, and reserve the water level gauge measuring hole 41 and the piezometer outlet hole 42; the water level gauge measuring hole 41 and the piezometer outlet hole 42 are well sealed to prevent surface water, construction water, and rainwater from accidentally entering the pipe;

[0051] Step 4: The cable of the piezometer 3 enters the cable protection tube 2 through the bottom of the cable protection tube 2, passes through the piezometer outlet hole 42 and is connected to the automation device to realize automatic data collection;

[0052] Step 5: Open the sealing cover of the water level gauge measuring hole 41, put the water level gauge water ruler into the water level gauge measuring hole 41 until the water surface elevation, wait for the water level gauge to emit a prompt sound and then perform manual reading; realize manual observation.

[0053] Other parts not described belong to the prior art.

Claims

1. A device for solving the mutual interference between manual and automatic observation of pressure measuring tubes, characterized by: It comprises a pressure measuring tube (1) with one end located outside the ground and the other end extending into the ground, a cable protection tube (2) with one end located outside the pressure measuring tube (1) and the other end located at the bottom of the pressure measuring tube (1), a piezometer (3) located at the bottom of the pressure measuring tube (1), and an orifice protection device (5); The top of the pressure measuring tube (1) is provided with a water level gauge measuring hole (41) and a piezometer outlet hole (42); the cable protection tube (2) is connected to the piezometer outlet hole (42); The cable of the piezometer (3) enters the cable protection tube (2) through the bottom of the cable protection tube (2), passes through the piezometer outlet hole (42), and is connected to the automation device; The pressure measuring tube (1) has a U-shaped buckle (11) inside, and the pressure measuring tube (1) positions the cable protection tube (2) on one side inside the pressure measuring tube (1) through the U-shaped buckle (11), and the cable protection tube (2) can move up and down inside the pressure measuring tube (1); The orifice protection device (5) comprises a concrete pier (51) with one end located outside the ground and the other end extending into the ground, and an orifice protection pipe (52) with one end located outside the concrete pier (51) and the other end located inside the concrete pier (51); the top end of the pressure measuring pipe (1) is located inside the orifice protection pipe (52).

2. The device for solving the mutual interference between manual and automatic observation of pressure measuring tube according to claim 1 is characterized in that: The top of the pressure measuring tube (1) is provided with a positioning cover (53); the cable protection tube (2) is connected to the piezometer wire outlet hole (42) on the positioning cover (53).

3. The device for solving the mutual interference between manual and automatic observation of pressure measuring tube according to claim 2 is characterized in that: The middle part of the U-shaped buckle (11) is sleeved on the cable protection tube (2), and the two ends are tightly attached to the inner wall of the pressure measuring tube (1).

4. The device for solving the mutual interference between manual and automatic observation of pressure measuring tube according to claim 3 is characterized in that: The pressure measuring tube (1) has a holder (6) at the bottom; the holder (6) comprises a buckle (61), a cable protection tube positioning hole (62) located at one end of the buckle (61), and a piezometer positioning hole (63) located at the other end of the buckle (61); the cable protection tube positioning hole (62) is sleeved on the cable protection tube (2); and the piezometer positioning hole (63) is sleeved on the piezometer (3).

5. The device for solving the mutual interference between manual and automatic observation of pressure measuring tube according to claim 4 is characterized in that: Cement mortar (521) is provided between the lower half of the orifice protection tube (52) and the pressure measuring tube (1).

6. The device for solving the mutual interference between manual and automatic observation of pressure measuring tube according to claim 5 is characterized in that: There are three steel bar heads (522) on the hole protection pipe (52) located in the concrete pier (51).

7. A method for using the device for solving the mutual interference between manual and automatic observation of pressure measuring tubes according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Drill holes according to the design drawings and install the pressure measuring tube (1) using Φ70 PE pipe; Step 2: Install a Φ20PE cable protection tube (2) in the pressure measuring tube (1), and use a U-shaped buckle (11) to position the cable protection tube (2) on one side of the pressure measuring tube (1). The cable protection tube (2) can move up and down in the pressure measuring tube (1), and there is space on the other side of the pressure measuring tube (1) for manual observation with a water level gauge; fix the piezometer (3) using a holder (6); Step 3: Cast the orifice protection device (5), install the top positioning cover (53) of the pressure measuring tube (1), and reserve the water level gauge measuring hole (41) and the piezometer outlet hole (42); the water level gauge measuring hole (41) and the piezometer outlet hole (42) are well sealed to prevent surface water, construction water and rainwater from entering the tube; Step 4: The cable of the piezometer (3) enters the cable protection tube (2) through the bottom of the cable protection tube (2), passes through the piezometer outlet hole (42), and is connected to the automation device to realize automatic data collection; Step 5: Place the water level gauge into the water level gauge measuring hole (41) until the water level reaches the water surface elevation, and wait for the water level gauge to emit a prompt sound before manually reading the water level; thus achieving manual observation.

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