A device for monitoring groundwater level, osmotic pressure and settlement

Abstract

The utility model discloses a kind of detection underground water level and osmotic pressure and settlement monitoring device, belong to the technical field of underground water monitoring equipment, including a kind of detection underground water level and osmotic pressure and settlement monitoring device, including large-diameter osmotic tube, small-diameter osmotic tube and protection device;The protection device is upper opening hollow shell, the large-diameter osmotic tube is communicated with small-diameter osmotic tube and is respectively fixed in the inside of protection device;The side end face of large-diameter osmotic tube far from small-diameter osmotic tube is fixedly connected with osmotic detection meter.This utility model device is not influenced by soil settlement objectively as a whole, settlement plate does not occur horizontal deviation, influence actual settlement depth monitoring.Effective solution can be made to the problem that the change of embedding elevation of osmotic pressure gauge caused by foundation settlement leads to inaccurate measurement value, soil deformation leads to cable breakage, damaged osmotic pressure gauge can also be replaced at any time.

Description

Technical Field

[0001] This utility model belongs to the technical field of groundwater monitoring equipment, and in particular relates to a device for detecting groundwater level, osmotic pressure and settlement. Background Technology

[0002] The Binjiang New Area of ​​a certain city is located in the western part of the city, bordered by the Liufen River to the north, the Xiangcheng River estuary to the south, the Yangtze River shoreline to the west, and Tianmen Avenue to the east, covering a planned area of ​​approximately 17 square kilometers, with a Yangtze River shoreline of about 12 kilometers. Due to its proximity to a tributary of the Yangtze River and abundant groundwater, the area experiences heavy rainfall due to seasonal and weather conditions. The impact of the river's flow on the riverbank makes flood control and drainage a top priority. While the riverside area has undergone long-term development and now boasts well-connected roads and numerous buildings, the soft soil foundation and abundant groundwater necessitate careful consideration of the groundwater level's influence in all construction projects.

[0003] In soft soil foundations, due to engineering geological conditions, boundary conditions, and cut / fill conditions, soil settlement, lateral deformation, and changes in groundwater levels may occur during the foundation treatment process and subsequent operation. These changes will have varying degrees of impact on the project itself, as well as surrounding buildings, pipelines, and roads. Therefore, to ensure the smooth progress of the project and guarantee its quality, safety monitoring must be carried out during the foundation treatment process.

[0004] Currently, monitoring methods for seepage pressure and settlement are often separate, which frequently leads to the following problems in soft soil foundations: 1) Lateral deformation of the foundation causes bending deformation of the settlement plate's side rods, resulting in inaccurate settlement measurements; 2) Piezometers settle with the foundation, leading to inaccurate water level and seepage pressure measurements; 3) Piezometers may be damaged and cannot be replaced; 4) Excessive foundation settlement may cause piezometer cables to break. Therefore, research on an integrated monitoring device and measurement method for groundwater level detection, seepage pressure, and settlement in soft soil foundations is of great practical significance in addressing these challenges. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a device for detecting groundwater level, osmotic pressure and settlement to solve the problems mentioned in the background art or achieve better technical effects.

[0006] To solve the above-mentioned technical problems, the inventors of this utility model have derived the technical solution of this utility model through practice and summarization. This utility model discloses a device for detecting groundwater level, osmotic pressure and settlement monitoring, including a large-diameter osmotic pipe, a small-diameter osmotic pipe and a protective device; the protective device is an open-top hollow shell, the large-diameter osmotic pipe and the small-diameter osmotic pipe are connected and respectively fixed inside the protective device; a permeability meter is fixedly connected to the side end face of the large-diameter osmotic pipe away from the small-diameter osmotic pipe.

[0007] Preferably, the length of the permeameter is similar to that of the large-diameter permeameter tube, and the bottom of the permeameter is flush with the bottom of the large-diameter permeameter tube.

[0008] Preferably, the large-diameter permeation tube and the small-diameter permeation tube are of similar length, and the highest point of both the large-diameter and small-diameter permeation tubes is higher than the top end face of the protection device; both the large-diameter and small-diameter permeation tubes are perpendicular to the bottom of the protection device.

[0009] Preferably, the bottom end of the large-diameter permeable pipe is provided with a large-diameter permeable pipe bottom opening, and a permeable geotextile can be installed or wrapped on the large-diameter permeable pipe bottom opening.

[0010] Preferably, the bottom end of the small-diameter permeation tube is a sealed end, and a connecting tube is fixedly connected to the side of the small-diameter permeation tube near the large-diameter permeation tube, and the large-diameter permeation tube and the small-diameter permeation tube are connected through the connecting tube.

[0011] Preferably, the top of both sides of the protective device is fixedly connected to a fixing plate, and the fixing plate is perpendicular to the side wall of the protective device.

[0012] Preferably, the lower ends of both sides of the protection device are provided with vertically oriented sliding grooves, and a settlement detection plate is movably connected to the sliding grooves.

[0013] Preferably, the settlement detection plate includes a settlement detection plate body and sliding displacement blocks fixedly connected to the two end faces of the settlement detection plate body.

[0014] Preferably, a protective plate is fixedly installed at the bottom of the protective device, and the protective plate is parallel to the fixed plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) The bottom end of the large-diameter permeable pipe of this utility model is provided with a large-diameter permeable pipe bottom opening. A permeable geotextile can be installed or wrapped on the bottom opening of the large-diameter permeable pipe, and water can enter the large-diameter permeable pipe through the bottom opening of the large-diameter permeable pipe. Several small holes are also provided on the side wall of the large-diameter permeable pipe, which can further improve the efficiency of water permeation into the large-diameter permeable pipe.

[0017] (2) The structure of this utility model device is relatively simple and the manufacturing cost is low; moreover, this device consumes almost no materials when buried and is convenient and quick to operate.

[0018] (3) The device of this utility model is objectively unaffected by soil settlement, and the settlement plate will not shift horizontally, thus affecting the monitoring of the actual settlement depth.

[0019] (4) This utility model device can effectively solve the problems of inaccurate measurement caused by changes in the piezometer burial elevation due to foundation settlement and cable breakage caused by soil deformation. It can also replace damaged piezometers at any time. Attached Figure Description

[0020] Figure 1 This is a front structural diagram of the groundwater level, osmotic pressure, and settlement monitoring device of this utility model;

[0021] Figure 2 This is a schematic diagram showing the connection between the large-diameter permeation tube and the small-diameter permeation tube of this utility model;

[0022] Figure 3 This is a side view of the sliding groove and settlement detection plate of this utility model.

[0023] Figure 4 This is an elevation view of the monitoring point of this utility model;

[0024] Figure 5 This is a plan view of the monitoring points of this utility model.

[0025] Figure label:

[0026] 1. Large-diameter permeation tube; 101. Bottom opening of the large-diameter permeation tube; 102. Side wall of the large-diameter permeation tube;

[0027] 2. Penetrant meter;

[0028] 3. Protective devices;

[0029] 4. Settlement detection plate; 401. Settlement detection plate body; 402. Displacement block;

[0030] 5. Protective plate;

[0031] 6. Sliding groove;

[0032] 7. Connecting pipe;

[0033] 8. Water level line;

[0034] 9. Small-diameter permeation tubes;

[0035] 10. Solid long tube;

[0036] 11. Fixing plate;

[0037] K1, Monitoring Point 1;

[0038] Monitoring points K2 and No. 2;

[0039] K3, Monitoring Point 3;

[0040] K4, monitoring point 4. Detailed Implementation

[0041] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to specific examples.

[0042] Example 1

[0043] A device for detecting groundwater level, osmotic pressure, and settlement monitoring, such as Figures 1-3 As shown, it includes a large-diameter permeation tube 1, a small-diameter permeation tube 9, and a protective device 3; the large-diameter permeation tube 1 and the small-diameter permeation tube 9 are connected and respectively fixed inside the protective device 3.

[0044] The large-diameter permeation tube 1 and the small-diameter permeation tube 9 are of similar length and both are greater than the height of the protection device 3. Both the large-diameter permeation tube 1 and the small-diameter permeation tube 9 are perpendicular to the bottom of the protection device 3. The side ends of the large-diameter permeation tube 1 and the small-diameter permeation tube 9 are respectively fixedly connected to the inner sides of both ends of the protection device 3.

[0045] The bottom end of the large-diameter permeable pipe 1 is provided with a large-diameter permeable pipe bottom opening 101. A permeable geotextile can be installed or wrapped on the large-diameter permeable pipe bottom opening 101, and water can enter the large-diameter permeable pipe 1 through the large-diameter permeable pipe bottom opening 101. Several small holes are also opened on the side wall 102 of the large-diameter permeable pipe 1, which can further improve the efficiency of water permeation into the large-diameter permeable pipe 1.

[0046] A permeameter 2 is fixedly connected to the side end of the large-diameter permeameter 1 away from the small-diameter permeameter 9. The bottom of the permeameter 2 is flush with the bottom of the large-diameter permeameter 1, and it can detect the water level change in the large-diameter permeameter 1 in real time.

[0047] The bottom end of the small-diameter permeable tube 9 is a sealed end. A connecting tube 7 is fixedly connected to the side of the small-diameter permeable tube 9 near the large-diameter permeable tube 1. The large-diameter permeable tube 1 and the small-diameter permeable tube 9 are connected through the connecting tube 7. Water can only enter the small-diameter permeable tube 9 through the connecting tube 7 connected to the large-diameter permeable tube 1.

[0048] The top of both sides of the protective device 3 are fixedly connected to fixing plates 11, which can be laid flat on the ground to fix the entire device and prevent it from sinking into the ground. The lower half of both sides of the protective device 3 is provided with vertical sliding grooves 6, and settlement detection plates 4 are movably connected to the sliding grooves 6. The bottom of the protective device 3 is fixedly installed with a protective plate 5.

[0049] Preferably, the settlement detection plate 4 includes a settlement detection plate body 401 and displacement blocks 402 fixedly connected to the two end faces of the settlement detection plate body 401. The displacement blocks 402 and the sliding groove 6 can slide relative to each other.

[0050] Preferably, the settlement detection plate body 401 is made of a lightweight material with low density, which allows it to float on the water surface. Thus, the buoyancy of the water propels the settlement detection plate 4 to move up and down.

[0051] Example 2

[0052] The working principle of a groundwater level, osmotic pressure, and settlement monitoring device is as follows:

[0053] Step 1: Determine the monitoring area. Observe the area where monitoring points need to be set up on the structure being monitored, and determine the location of the area and the positions of monitoring points K1 (1), K2 (2), K3 (3), and K4 (4). Figure 4 and 5 As shown.

[0054] Step 2: Prepare sufficient equipment, drill holes, and after completion, put the protective device 3 together with the large-diameter permeable pipe 1 and the small-diameter permeable pipe 9 underground.

[0055] Step 3: Periodic observation begins. Groundwater enters the interior of the sliding groove 6, and then enters the interior of the large-diameter permeable pipe 1 through the permeable geotextile wrapped around the outside and the small pores in the pipe wall. When groundwater enters the large-diameter permeable pipe 1, the permeability meter 2 records the data. When the water level in the large-diameter permeable pipe 1 reaches the height of the connecting pipe 7 that connects to the small-diameter permeable pipe 9 below, groundwater simultaneously enters the small-diameter permeable pipe 9. After a short period of time, the water levels on both sides of the pipe are equal, and the first layer of data collection is ready.

[0056] Step 4: The first data collection steps are as follows: The solid long tube 10 is inserted into the protection device 3 and touched the settlement detection plate 4 by going down. The depth of this insertion is recorded as H1. After cleaning and drying the solid long tube 10, it is inserted into the large diameter permeable tube 1. After touching the bottom of the permeable tube, it is pulled out. The length of the water mark is judged, and after deducting the volume of the solid tube, the groundwater level depth at this time is calculated as S1. After cleaning and drying the solid long tube 10, it is inserted into the small diameter permeable tube 9. When it goes down below the water surface, the water level of the two permeable tubes changes. At the same time, the permeameter 2 will monitor the data parameters and record the initial permeability parameters of the groundwater level. The first data collection is thus completed.

[0057] Step 5: Determine the detection cycle. After one cycle, conduct a second data collection. The steps are as follows: The solid long tube 10 is inserted into the protection device 3, touching the settlement detection plate 4 as it descends, and the depth is recorded as H2. After cleaning and drying the solid long tube 10, it is inserted into the large-diameter permeable tube 1. After touching the bottom of the permeable tube, it is pulled out. The length of the water mark is determined, and after deducting the volume of the solid long tube 10, the groundwater level depth at this time is calculated as S2. After cleaning and drying the solid long tube 10, it is inserted into the small-diameter permeable tube 9. As it descends below the water surface, the water levels in both the large-diameter and small-diameter permeable tubes 1 and 9 change. Simultaneously, the permeameter 2 monitors the data parameters and records the first cycle change of the groundwater level permeability parameters. The data from the previous cycle is then used to calculate the first week's foundation settlement value H2-H2 and the groundwater level change value S2-S1. This completes one cycle of data collection.

[0058] Step 5: Periodically record the data on groundwater level, seepage pressure changes, and foundation settlement, and input this data into the SWMM model to monitor the impact of the structure on the surrounding area. After the structure construction is completed and the monitoring task is finished, the monitoring equipment materials can be retrieved by pulling them out. The materials can still be processed and recycled, greatly saving costs.

Claims

1. A device for detecting groundwater level and osmotic pressure and settlement monitoring, characterized in that, It includes a large-diameter permeation tube (1), a small-diameter permeation tube (9), and a protective device (3); the protective device (3) is an open-top hollow shell, the large-diameter permeation tube (1) and the small-diameter permeation tube (9) are connected and respectively fixed inside the protective device (3); a permeation detector (2) is fixedly connected to the side end face of the large-diameter permeation tube (1) away from the small-diameter permeation tube (9).

2. The device for detecting groundwater level, osmotic pressure and settlement monitoring according to claim 1, characterized in that, The length of the permeameter (2) is equivalent to that of the large-diameter permeameter tube (1), and the bottom of the permeameter (2) is level with the bottom of the large-diameter permeameter tube (1).

3. The device for detecting groundwater level, osmotic pressure and settlement monitoring according to claim 1, characterized in that, The large-diameter permeation tube (1) and the small-diameter permeation tube (9) are of similar length, and the highest point of both the large-diameter permeation tube (1) and the small-diameter permeation tube (9) is higher than the top end face of the protection device (3); both the large-diameter permeation tube (1) and the small-diameter permeation tube (9) are perpendicular to the bottom of the protection device (3).

4. The device for detecting groundwater level, osmotic pressure and settlement monitoring according to claim 1, characterized in that, The bottom end of the large-diameter permeable pipe (1) is provided with a large-diameter permeable pipe bottom opening (101), and a permeable geotextile can be installed or wrapped on the large-diameter permeable pipe bottom opening (101).

5. The groundwater level, osmotic pressure, and settlement monitoring device according to claim 1, characterized in that, The bottom end of the small-diameter permeation tube (9) is a sealed end. A connecting tube (7) is fixedly connected to the side of the small-diameter permeation tube (9) near the large-diameter permeation tube (1). The large-diameter permeation tube (1) and the small-diameter permeation tube (9) are connected through the connecting tube (7).

6. The device for detecting groundwater level, osmotic pressure and settlement monitoring according to claim 1, characterized in that, The top of both sides of the protective device (3) is fixedly connected with a fixing plate (11), and the fixing plate (11) is perpendicular to the side wall of the protective device (3).

7. The device for detecting groundwater level, osmotic pressure and settlement monitoring according to claim 1, characterized in that, The lower ends of both sides of the protective device (3) are respectively provided with vertical sliding grooves (6), and a settlement detection plate (4) is movably connected to the sliding grooves (6).

8. The device for detecting groundwater level, osmotic pressure and settlement monitoring according to claim 7, characterized in that, The settlement detection plate (4) includes a settlement detection plate body (401) and sliding displacement blocks (402) fixedly connected to the two end faces of the settlement detection plate body (401).

9. The device for detecting groundwater level, osmotic pressure and settlement monitoring according to claim 1, characterized in that, The bottom end of the protective device (3) is fixedly installed with a protective plate (5), which is parallel to the fixed plate (11).

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