Anti-floatation structure for ecological installations

Abstract

The application discloses an anti-floating structure suitable for ecological facilities, which comprises a water collecting pipeline arranged below the ecological facilities, a water collecting well communicated with the water collecting pipeline, a water pump arranged in the water collecting well and used for conveying water to the outside, and a liquid level sensor used for detecting the liquid level in the water collecting well and signal-connected with the water pump, wherein a water collecting hole is formed in the water collecting pipeline, the water collecting hole is arranged at the bottom of the water collecting pipeline, underground water enters the water collecting pipeline through the water collecting hole of the water collecting pipeline and flows to the water collecting well, and the liquid level sensor sends a signal to the water pump to convey the water in the water collecting well to the outside facilities.

Description

Technical Field

[0001] This application relates to the field of ecological water treatment technology, and in particular to an anti-buoyancy structure suitable for ecological facilities. Background Technology

[0002] When constructing facilities such as ecological wetlands and landfills that require preventing wastewater from entering the soil, geomembranes need to be laid to prevent seepage at the bottom and sides. During the geomembrane construction process, groundwater on the construction surface where the geomembrane is laid needs to be cleared.

[0003] In the Jiangnan region, with its numerous river networks and abundant groundwater, the groundwater level is high. A significant amount of groundwater remains at the construction site, requiring cleanup. However, during the cleanup process, groundwater continuously seeps into the construction site, making complete removal impossible. During geomembrane laying, the undisturbed groundwater generates upward buoyancy. As groundwater continuously enters the construction site, this upward buoyancy increases, failing to completely offset the pressure generated by the construction materials. When the upward buoyancy exceeds the pressure, the entire upper-layer construction structure floats, affecting construction quality and increasing difficulty. This is particularly problematic at construction sites near rivers, lakes, and areas with high groundwater levels, requiring simultaneous dewatering and geomembrane laying. After geomembrane laying, continuous dewatering is necessary to maintain its flatness and prevent excessive water accumulation at the bottom, which could cause the geomembrane to float and compromise the stability of the upper structure. Summary of the Invention

[0004] To address the aforementioned problems, this application provides an anti-buoyancy structure suitable for ecological facilities.

[0005] To achieve the above objectives, this application provides an anti-buoyancy structure suitable for ecological facilities, including a water collection pipe disposed below the ecological facility and a water collection well connected to the water collection pipe. A water pump for transporting water to the outside and a liquid level sensor for detecting the liquid level in the water collection well are installed in the water collection well. The liquid level sensor is signal-connected to the water pump. A water collection hole is opened on the water collection pipe and is located at the bottom of the water collection pipe. Groundwater enters the water collection pipe through the water collection hole and flows to the water collection well. The liquid level sensor sends a signal to the water pump to transport the water in the water collection well to the external facility.

[0006] More specifically, coarse sand and gravel are laid around the water collection pipe, and a water-passing component is laid between the coarse sand and gravel and the water collection pipe.

[0007] More specifically, a well cover is installed on the water collection well, and a pressure gauge is installed inside the water collection well, the pressure gauge being connected to the water pump signal.

[0008] More specifically, an air valve hole is provided on the manhole cover, and an air valve is installed in the air valve hole.

[0009] More specifically, the water collection pipeline includes several water collection branch pipes and a main water collection pipe connected to all of the several water collection branch pipes, and the main water collection pipe is connected to the water collection well.

[0010] More specifically, the structures of several of the water collection branch pipes are the same, each including several water collection holes and a water outlet, the water collection holes being open and the water outlet being connected to the main water collection pipe.

[0011] More specifically, the main water collection pipe includes several connection ports and a water inlet, with each of the connection ports corresponding to a branch water collection pipe, and the water inlet connected to the water collection well.

[0012] More specifically, several of the aforementioned water collection branch pipes are evenly arranged below the ecological facilities.

[0013] More specifically, the pressure gauge is positioned above the highest water level of the collection well.

[0014] More specifically, an inlet is provided on the water collection well, and the water outlet of the main water collection pipe is connected to the inlet. The normal water level of the water collection well is lower than that of the inlet.

[0015] The beneficial effects of an anti-buoyancy structure suitable for ecological facilities are as follows: This utility model is a design structure that prevents the geomembrane and above-ground facilities from floating due to increased buoyancy caused by rising groundwater levels. It solves the problem of groundwater accumulation at the bottom of the construction area during construction, causing the geomembrane to float during installation; it also solves the problem of the entire facility floating due to groundwater accumulation during operation and maintenance after construction, thus making the entire structure more stable during construction and operation. A sealed collection well is used, and a valve is installed to discharge water from the collection well, creating negative pressure to provide pressure for the collection pipe, allowing groundwater to quickly enter the collection well. The negative pressure valve is a movable valve, allowing for pressure adjustment at any time based on the pressure inside the well and the amount of groundwater. Additional collection pipes are installed around the collection branch pipes according to different water inflow conditions, with collection holes at different locations on these additional collection pipes to facilitate the collection of water from around the collection pipe, solving the problem of rapid collection of water from different directions. Attached Figure Description

[0016] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the water collection well of this utility model;

[0018] Figure 3 This is a schematic diagram of the water collection pipe and surrounding facilities of this utility model;

[0019] In the picture:

[0020] 11. Wall; 12. Geomembrane; 21. Main water collection pipe; 22. Branch water collection pipe; 3. Water collection well; 31. Inlet connection; 32. Well cover; 33. Air valve hole; 34. Liquid level sensor; 35. Pressure gauge; 36. Water pump; 4. Water passage components; 5. Coarse sand and gravel. Detailed Implementation

[0021] An anti-buoyancy structure suitable for ecological facilities is installed below the ecological facilities. During construction, it prevents the geomembrane 12 from floating after being laid. During operation and maintenance, it prevents the entire facility from being affected by the buoyancy of groundwater and floating, thus making the overall facility structure more stable.

[0022] The ecological facility includes a wall 11, filter media placed within the space enclosed by the wall 11, and a geomembrane 12 placed between the wall 11 and the filter media. Wastewater is filtered within the filter media, and the geomembrane 12 is laid to prevent wastewater from seeping into the soil. The geomembrane 12 is treated to prevent seepage at its bottom and sides. Before laying the geomembrane 12, a large amount of accumulated water in the construction area needs to be drained. However, in the Jiangnan region, groundwater is abundant and the groundwater level is high. Although the groundwater in the construction area has been drained in the early stages of construction, groundwater will still continuously enter the construction area. Furthermore, the Jiangnan region has a long rainy season with abundant rainfall, and the groundwater level rises rapidly during rainfall, causing the ecological facility to float during the construction and operation and maintenance periods. Therefore, an anti-buoyancy structure is installed.

[0023] like Figure 1 , Figure 2 as well as Figure 3 As shown, the anti-buoyancy structure includes a water collection pipe and a water collection well 3.

[0024] The water collection pipe is located below the ecological facility. The water collection pipe includes several water collection branch pipes 22 and a main water collection pipe 21 connected to all the water collection branch pipes 22. The main water collection pipe 21 is connected to the water collection well 3. The arrangement of the water collection branch pipes 22 varies; they can be unevenly or evenly distributed. In this design, the water collection branch pipes 22 are arranged parallel to each other below the ecological facility, with equal distances between adjacent water collection branch pipes 22. The water collection branch pipes 22 have identical structures, each including a water collection hole and an outlet. The water collection hole is open, and the outlet is connected to the main water collection pipe 21, allowing groundwater to enter the water collection branch pipes 22 through the water collection hole at any time, flow into the main water collection pipe 21 through the outlet, and finally flow into the water collection well 3. To ensure the connection between the main water collection pipe 21 and the water collection branch pipes 22, several connection ports are provided on the main water collection pipe 21, the number of which is equal to the number of water collection branch pipes 22.

[0025] The main water collection pipe 21 includes several connection ports and a water inlet. The connection ports are connected one-to-one with the outlets of the branch water collection pipes 22, and the water inlet is connected to the water collection well 3.

[0026] To ensure groundwater can enter the collection pipe at any time, the collection holes of the collection branch pipe 22 are open. Since groundwater flows from bottom to top, to ensure better collection, regardless of the flow rate or volume, the groundwater must enter the collection holes as soon as it reaches the collection branch pipe 22. The collection holes are located at the bottom of the collection branch pipe 22. As soon as groundwater reaches the collection branch pipe 22, it can enter through the collection holes and will not flow towards the ecological facilities, thus preventing damage to the geomembrane 12. Several collection holes are evenly distributed on the collection branch pipe 22.

[0027] Depending on the different water inflow conditions at different locations, additional water collection pipes are installed around the water collection branch pipe 22. Water collection holes are opened at the top, middle and bottom of the additional water collection pipes. When the groundwater level is higher than the water collection pipe, it is convenient to collect water from the top. The water collection hole in the middle can be set at multiple angles to facilitate the collection of water from all directions around the water collection pipe, making the ecological facility collect water more comprehensively.

[0028] When groundwater flows from the collection hole to the collection branch pipe 22, it carries soil, small gravel, or other impurities into the collection branch pipe 22. Over time, this causes blockage of the collection branch pipe 22 and soil erosion near the ecological facilities. Therefore, coarse sand and gravel 5 are laid around the collection pipe to prevent large particles and stones from entering the collection pipe with the groundwater, thus preventing blockage of the collection branch pipe 22. However, during the flow of groundwater, soil or small impurities will still flow with the groundwater into the collection pipe, causing soil erosion. Therefore, a water-passing component 4 is laid between the collection pipe and the coarse sand and gravel 5. Alternatively, the water-passing component 4 can be installed to enclose the collection pipe, with coarse sand and gravel 5 laid on the outside of the water-passing component 4 away from the collection pipe. Water can enter the collection branch pipe 22 through the water-passing component 4, ensuring that groundwater can flow into the collection pipe while preventing soil, small gravel, and other impurities from entering the collection branch pipe 22, thus preventing blockage of the collection pipe and soil erosion. The water-passing component 4 can be any structure that can isolate sand and soil but allows water to pass through, such as non-woven fabric, filter screen, etc. To better ensure the isolation of soil, small gravel and other impurities, a water-passing component 4 is also provided on the outside of the coarse sand and gravel 5.

[0029] The collection well 3 is used for temporary storage of collected groundwater. An inlet connection 31 is provided on the collection well 3, and the water outlet of the main collection pipe 21 is connected to the inlet connection 31. Groundwater enters the collection well 3 through the main collection pipe 21. The collection well 3 is located underground, saving ground space and maintaining an aesthetically pleasing appearance. After temporary storage in the collection well 3, the groundwater flows to rivers or other facilities. Therefore, a water pump 36 is installed in the collection well 3. When it is necessary to discharge groundwater from the collection well 3, the water pump 36 is turned on to extract water from the collection well 3. Because the discharged water is groundwater, its quality is relatively clean and does not require filtration; it can be directly discharged into rivers or other facilities. The water pump 36 is connected to an outlet pipe, which is connected to external facilities or rivers.

[0030] As groundwater flows into the collection well 3, the water level will change. To adapt to the groundwater level at different times and ensure that groundwater can flow into the collection well 3 in a timely and rapid manner, a liquid level sensor 34 is installed in the collection well 3 to detect the amount of water in the collection well 3. The liquid level sensor 34 is located below the water inlet 31. When the liquid level sensor 34 detects groundwater, it indicates that the water level in the collection well 3 is high and the amount of groundwater is large.

[0031] After construction is completed, a well cover 32 is installed at the opening of the water collection well 3 to facilitate walking and ensure that no impurities enter the water collection well 3. An air valve port is opened on the well cover 32, and an air valve is installed in the air valve port. The air valve can be opened or closed. When the air valve is open, the pressure inside the water collection well 3 is balanced with the external pressure. When the air valve is closed, the water collection well 3 is kept in a negative pressure state.

[0032] When the level sensor 34 detects the liquid level in the collection well 3, it indicates a large amount of groundwater. The flow rate of the water pump 36 needs to be increased, and the pump 36 is adjusted to a fast flow rate. The collection pipe and the outlet pipe connected to the pump 36 maintain full flow, allowing water to be quickly discharged from the collection well 3. At this time, the air valve is closed, and the collection well 3 is sealed, maintaining a negative pressure state. When the adjusted flow rate is faster, the groundwater in the collection well 3 will be quickly discharged, and groundwater outside the collection well 3 will be quickly pumped into it, causing a sharp decrease in the groundwater volume. When the groundwater volume decreases, it is insufficient to keep the collection pipe full, and air will enter the collection well 3 along with the groundwater. With the entry of air, the pressure inside the collection well 3 increases, the air valve opens, and the collection well 3 is no longer sealed. After the air valve opens, the pump 36 is adjusted to a slow flow rate. This slow flow rate of the pump 36 is the normal flow rate.

[0033] As the water pump 36 flows slowly and groundwater continues to be input, the water level in the collection well 3 will gradually rise until the level sensor 34 detects the water surface and sends a signal to the water pump 36, triggering the water pump 36 device. The water pump 36 then enters a rapid flow state, at which point the air valve is closed, and the collection well 3 is in a closed state, so that the collection well 3 is once again kept under negative pressure.

[0034] Because the air valve needs to open or close according to the amount of groundwater to achieve a negative pressure or the same pressure as the outside air in the collection well 3, when the liquid level sensor 34 detects groundwater in the collection well 3, it drives the air valve to close and the water pump 36 to adjust to a fast flow state. After the amount of groundwater decreases, the collection pipe no longer fills the collection well 3 with water. During the water intake process, air will be introduced simultaneously. At this time, because air has entered the collection well 3, the air pressure in the collection well 3 will gradually increase. After the pressure gauge 35 detects the increase in air pressure in the collection well 3, it will send a signal to the air valve to control the air valve to open until the liquid level sensor 34 detects groundwater in the collection well 3 again.

[0035] The operation procedures of the level sensor 34, pressure gauge 35, water pump 36, and air valve are as follows:

[0036] When there is a large amount of groundwater, it needs to be collected and discharged quickly. With more groundwater, more will enter the collection well 3, causing the water level to rise. When the level sensor 34 detects groundwater in the collection well 3, it sends a signal to the water pump 36 and the air valve. The water pump 36 starts in a fast flow state, and the air valve closes. At this time, both the collection pipe and the outlet pipe are full of water inlet and outlet, respectively, and the collection well 3 maintains a negative pressure state. As the groundwater gradually decreases, the collection pipe no longer supplies groundwater to the collection well 3 at full capacity, and air will enter simultaneously. The air pressure in the collection well 3 will gradually increase. When the pressure gauge 35 detects the increased air pressure, it sends a signal to the air valve, which opens. The pressure gauge 35 simultaneously sends a signal to the water pump 36, which starts in a slow flow state. This continues until the level sensor 34 detects the water level in the collection well 3 again. Then, the level sensor 34 sends a signal to the air valve and the water pump 36, which closes and the water pump 36 starts in a fast flow state. Repeating the cycle.

[0037] With the manhole cover 32 and air valve closed in the water collection well 3, and as the water pump 36 continuously pumps water from the water collection well to external facilities, and the water collection pipe is full of water, the water collection well 3 will be under negative pressure. The air pressure in the water collection well 3 will be lower than the external air pressure, causing groundwater to naturally flow into the water collection well 3 due to the pressure difference. Of course, an air extraction pump can be installed as needed to pump the water collection well 3 to a negative pressure state.

[0038] The working principle of the anti-buoyancy structure is as follows:

[0039] The water collection hole of the water collection branch pipe 22 is open, allowing groundwater to flow into the water collection branch pipe 22 and finally enter the water collection well 3 through the water collection main pipe 21. A water pump 36 is installed in the water collection well 3 to pump the water in the water collection well 3 to a river or other facilities. During the flow of groundwater into the water collection well 3, when the liquid level sensor 34 in the water collection well 3 detects groundwater, the liquid level sensor 34 sends a signal to the water pump 36 and the air valve, adjusting the flow rate of the water pump 36 to a fast flow and closing the air valve. At this time, the pipe is full of flow, and the water collection well 3 is under negative pressure. This continues until the water collection pipe is no longer full. When the pressure gauge 35 detects an increase in pressure in the water collection well 3, it drives the air valve to open and adjusts the flow rate of the water pump 36 to a slow flow. This continues until the liquid level sensor 34 detects the water level in the water collection well 3, at which point the liquid level sensor 34 sends a signal to the water pump 36 and the air valve, adjusting the flow rate of the water pump 36 to a fast flow and closing the air valve.

Claims

1. An anti-buoyancy structure suitable for ecological facilities, characterized in that: The system includes a water collection pipe located below the ecological facility and a water collection well (3) connected to the water collection pipe. A water pump (36) for transporting water to the outside and a liquid level sensor (34) for detecting the liquid level in the water collection well (3) are installed in the water collection well (3). The liquid level sensor (34) is connected to the water pump (36) by signal. A water collection hole is opened on the water collection pipe and is located at the bottom of the water collection pipe. Groundwater enters the water collection pipe through the water collection hole at the bottom of the water collection pipe and flows to the water collection well (3). The liquid level sensor (34) sends a signal to the water pump (36) to transport the water in the water collection well (3) to the external facility.

2. The anti-buoyancy structure suitable for ecological facilities according to claim 1, characterized in that: Coarse sand (5) is laid around the water collection pipe, and a water-passing component (4) is laid between the coarse sand (5) and the water collection pipe.

3. The anti-buoyancy structure suitable for ecological facilities according to claim 1, characterized in that: A well cover (32) is provided on the water collection well (3), and an air valve hole (33) is opened on the well cover (32). An air valve is provided in the air valve hole (33), and the air valve is connected to the liquid level sensor (34).

4. The anti-buoyancy structure suitable for ecological facilities according to claim 3, characterized in that: A pressure gauge (35) is installed in the water collection well (3), and the pressure gauge (35) is connected to the air valve signal.

5. The anti-buoyancy structure suitable for ecological facilities according to claim 1, characterized in that: The water collection pipeline includes several water collection branch pipes (22) and a water collection main pipe (21) connected to the several water collection branch pipes (22). The water collection main pipe (21) is connected to the water collection well (3).

6. The anti-buoyancy structure suitable for ecological facilities according to claim 5, characterized in that: The structure of several of the water collection branch pipes (22) is the same, each including several water collection holes and water outlets. The water collection holes are open and the water outlets are connected to the main water collection pipe (21).

7. The anti-buoyancy structure suitable for ecological facilities according to claim 5, characterized in that: The main water collection pipe (21) includes several connection ports and a water inlet. The several connection ports are connected to the water collection branch pipes (22) one by one, and the water inlet is connected to the water collection well (3).

8. The anti-buoyancy structure suitable for ecological facilities according to claim 5, characterized in that: Several of the aforementioned water collection branch pipes (22) are evenly arranged below the ecological facilities.

9. The anti-buoyancy structure suitable for ecological facilities according to claim 4, characterized in that: The pressure gauge (35) is positioned above the highest water level of the collection well (3).

10. The anti-buoyancy structure suitable for ecological facilities according to claim 5, characterized in that: A water inlet (31) is provided on the water collection well (3), and the water outlet of the water collection main pipe (21) is connected to the water inlet (31). The highest water level of the water collection well (3) is lower than that of the water inlet (31).

Images