Protection device for preventing surface water from flowing into underground water observation hole

Abstract

The utility model provides a protection device for preventing surface water from flowing into an underground water observation hole, the underground water observation hole is formed in the ground, and a pipeline assembly is arranged on the ground through the underground water observation hole; a protection structure is arranged at the top of the pipeline assembly; the protection structure comprises a protection cover plate, a U-shaped water storage tank, an anti-backflow assembly and a filtering assembly. The U-shaped water storage tank is installed below the protective cover plate, the protective cover plate is installed above the pipeline assembly, the multiple anti-backflow assemblies are installed at the bottom of the U-shaped water storage tank, and the anti-backflow assemblies can make the pressure in the U-shaped water storage tank consistent with the pressure in the pipeline assembly; the filtering assembly is arranged in the U-shaped water storage tank and is arranged above the anti-backflow assembly. The underground water observation hole has the advantages that surface water, rainwater and fine particles are effectively prevented from entering the underground water observation hole through multiple protection mechanisms of the protection cover plate, the U-shaped water storage tank, the filtering assembly, the anti-backflow assembly and the sealing ring, and the accuracy and reliability of monitoring data are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of groundwater observation, and particularly relates to a protection device for preventing surface water from flowing into a groundwater observation hole. Background Art

[0002] As an important tool in the fields of hydrogeology and groundwater monitoring, the accuracy and reliability of groundwater observation holes are crucial for water resource management and environmental protection. Currently, groundwater observation holes are mainly used to monitor the water level and water quality changes in unconfined or confined aquifers. In temporary observation holes, PVC pipes are usually used for shaft protection to prevent cave-ins and ensure that they are higher than the ground to prevent surface water intrusion. However, in urban dense areas, the orifices of long-term groundwater level observation holes often cannot be higher than the ground, and protective fences cannot be set up around them, which makes the orifices vulnerable to external factors and results in frequent intrusion of surface water and rainwater, seriously affecting the accuracy of monitoring data.

[0003] Existing protective measures mainly include simple lid protection, but this method has obvious deficiencies. First, the lid is easily damaged by external factors such as pedestrian trampling and vehicle rolling, resulting in the loss of protective function. Second, even if the lid is intact, it cannot effectively prevent the intrusion of fine particles and rainwater, and these foreign substances will interfere with the monitoring results of water level and water quality. Therefore, the existing protective measures have significant defects in protecting groundwater observation holes from surface water intrusion, and a more effective and reliable solution is urgently needed.

[0004] Currently, the two existing technical solutions closest to the present invention include: one is to build a protective wall around the observation hole using concrete or masonry structures to prevent surface water from flowing in; the other is to install a simple metal or plastic lid at the orifice of the observation hole. However, both of these solutions have obvious disadvantages.

[0005] For the first solution, although the protective wall made of concrete or masonry structures can prevent surface water from flowing in to a certain extent, its construction is complex, the cost is high, and it is difficult to implement in urban dense areas because of limited space and possible impact on surrounding facilities. In addition, once the protective wall is damaged, it is difficult and costly to repair.

[0006] Although the second solution is simple and easy to implement, as mentioned above, the metal or plastic lid is easily damaged by external factors and cannot effectively prevent the intrusion of fine particles and rainwater. Therefore, the effect of this solution in protecting groundwater observation holes from surface water intrusion is limited. Content of the Utility Model

[0007] In view of this, the utility model aims to propose a protection device for preventing surface water from flowing into a groundwater observation hole to solve at least one technical problem in the background art.

[0008] To achieve the above object, the technical solution of the present utility model is realized as follows:

[0009] A protection device for preventing surface water from flowing into a groundwater observation hole. There is a groundwater observation hole on the ground, and a pipeline assembly is provided through the groundwater observation hole on the ground; a protection structure is provided at the top of the pipeline assembly;

[0010] The protection structure includes a protective cover plate, a U-shaped water storage tank, an anti-backflow assembly, and a filtering assembly;

[0011] The U-shaped water storage tank is installed below the protective cover plate, the protective cover plate is installed above the pipeline assembly, and several anti-backflow assemblies are installed at the bottom of the U-shaped water storage tank. The anti-backflow assembly can make the pressure in the U-shaped water storage tank consistent with that in the pipeline assembly;

[0012] The filtering assembly is arranged in the U-shaped water storage tank and above the anti-backflow assembly.

[0013] Furthermore, the upper part of the protective cover plate and the pipeline assembly is threadedly connected, and the height of the upper surface of the protective cover plate is flush with the ground.

[0014] Furthermore, an annular mounting ring is provided at the bottom of the protective cover plate. The inner wall of the U-shaped water storage tank is threadedly connected with the annular mounting ring, and a sealing ring is provided between the inside of the pipeline assembly and the outer wall of the U-shaped water storage tank.

[0015] Furthermore, the anti-backflow assembly includes a connecting pipeline and an anti-backflow rubber tube. The connecting pipeline is arranged at the bottom of the U-shaped water storage tank; one end of the connecting pipeline is communicated with the U-shaped water storage tank, and the other end of the connecting pipeline is communicated with the connecting pipeline assembly.

[0016] The anti-backflow rubber tube is arranged at one end of the connecting pipeline and in the U-shaped water storage tank.

[0017] Furthermore, the anti-backflow rubber tube is a thin-walled rubber ring and has a hollow conical structure;

[0018] One end of the anti-backflow rubber tube away from the connecting pipeline is a flat end. The middle of the flat end is communicated with the U-shaped water storage tank through a vent hole, and the other end is communicated with the connecting pipeline.

[0019] The bottom of the hollow cone of the anti-backflow rubber tube is connected to the connecting pipeline, and the larger-diameter end of the anti-backflow rubber tube is connected to the connecting pipeline.

[0020] Furthermore, the filtering assembly includes a filter screen and a mounting plate. The mounting plate is arranged inside the U-shaped water storage tank, and the filter screen is installed on the mounting plate through mounting bolts.

[0021] Furthermore, a filter material layer and a clay ball layer are successively arranged between the pipeline assembly and the groundwater observation hole on the ground from bottom to top.

[0022] Further, the pipeline assembly includes a water stop pipe, a filter pipe, and a sedimentation pipe; the water stop pipe, the filter pipe, and the sedimentation pipe are arranged in sequence from top to bottom;

[0023] One end of the water stop pipe extends out of the filter material layer; the other end of the water stop pipe is flush with the end of the filter material layer;

[0024] The positions of the filter pipe and the sedimentation pipe correspond to the position of the filter material layer.

[0025] Further, a plurality of filter holes are provided on the filter pipe.

[0026] Compared with the prior art, the protection device for preventing surface water from flowing into the groundwater observation hole of the present utility model has the following advantages:

[0027] 1. This application has a multiple protection mechanism. Through the multiple protection mechanisms of the protection cover plate, U-shaped water storage tank, filter assembly, anti-backflow assembly, and sealing ring, it effectively prevents surface water, rainwater, and fine particles from entering the groundwater observation hole, improving the accuracy and reliability of monitoring data.

[0028] 2. The device of this application is durable and easy to maintain: Except for the protection cover plate, each component of this device is arranged inside the observation hole, does not occupy extra space, and is not easily damaged; the components are made of durable materials such as stainless steel or corrosion-resistant plastics, making the present invention have a long service life and low maintenance cost. At the same time, the design of each component is convenient for disassembly and replacement, reducing the maintenance difficulty.

[0029] 3. The device of this application is economical and practical: Compared with building a protective wall made of concrete or masonry, the protection device of the present invention has a lower cost, simpler and faster construction, and is more easily implemented in urban dense areas.

[0030] 4. The device of this application enhances the sealing performance: The design of the sealing ring provides an additional waterproof barrier, enhancing the sealing performance of the device and further improving the waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0032] Figure 1 is the overall schematic diagram of the protection device for preventing surface water from flowing into the groundwater observation hole according to the embodiment of the present utility model;

[0033] Figure 2 is the schematic diagram of the protection structure according to the embodiment of the present utility model.

[0034] Description of the reference numerals:

[0035] 1. Groundwater observation hole; 2. Protective cover plate; 3. U-shaped water storage tank; 4. Ring-shaped mounting ring; 5. Sealing ring; 6. Connecting pipe; 7. Anti-backflow rubber pipe; 8. Filter screen; 9. Mounting plate; 10. Filter media layer; 11. Clay ball layer; 12. Stop water pipe; 13. Filter pipe; 14. Sedimentation pipe; 15. Mounting bolt. Specific embodiments

[0036] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0037] The present utility model will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0038] As Figures 1 to 2 shown, for the protection device for preventing surface water from flowing into the groundwater observation hole, a groundwater observation hole 1 is provided on the ground, and a pipeline assembly is provided on the ground through the groundwater observation hole 1; a protection structure is provided at the top of the pipeline assembly; the protection structure includes a protective cover plate 2, a U-shaped water storage tank 3, an anti-backflow assembly, and a filtering assembly; the U-shaped water storage tank 3 is installed below the protective cover plate 2, the protective cover plate 2 is installed above the pipeline assembly, several anti-backflow assemblies are installed at the bottom of the U-shaped water storage tank 3, and the anti-backflow assembly can make the pressure in the U-shaped water storage tank 3 consistent with the pressure in the pipeline assembly; the filtering assembly is arranged in the U-shaped water storage tank 3 and is arranged above the anti-backflow assembly.

[0039] The upper part of the protective cover plate 2 is threadedly connected to the pipeline assembly, and the height of the upper surface of the protective cover plate 2 is flush with the ground. A ring-shaped mounting ring 4 is provided at the bottom of the protective cover plate 2, the inner wall of the U-shaped water storage tank 3 is threadedly connected to the ring-shaped mounting ring 4, and a sealing ring 5 is provided between the inside of the pipeline assembly and the outer wall of the U-shaped water storage tank 3.

[0040] The sealing ring 5 is usually made of high-quality materials such as silica gel or rubber and has good elasticity and aging resistance. Its shape and size are customized according to the specific requirements of the installation position to ensure the sealing effect. The sealing ring 5 is installed in the gap between the inner wall of the groundwater observation hole 1 and the outer wall of the U-shaped water storage tank 3 to enhance the sealing performance, provide an additional waterproof barrier, and enhance the sealing performance of the entire system.

[0041] The U-shaped water storage tank 3 is made of stainless steel. The top of the U-shaped water storage tank 3 is connected to the ring-shaped mounting ring 4 of the protective cover plate 2 as a whole through a threaded interface, and the outer wall is closely attached to the inner wall of the water level observation hole through the sealing ring 5, achieving double fixation and sealing effects. A certain amount of surface water can be stored inside the device to prevent surface water from flowing in due to the separation of the protective cover plate 2. The material of the device has good corrosion resistance and durability.

[0042] The protective cover plate 2 is designed with threaded interfaces or other fastening devices for firm connection with the observation hole opening. As the first line of defense, the protective cover plate 2 can effectively block large particulate matters such as fallen leaves and garbage from entering the observation hole, reducing potential damage to the monitoring equipment. It also prevents damage to the monitoring equipment caused by human destruction or accidental collision.

[0043] The anti-backflow component includes a connecting pipe 6 and an anti-backflow rubber pipe 7. The connecting pipe 6 is arranged at the bottom of the U-shaped water storage tank 3. One end of the connecting pipe 6 is connected to the U-shaped water storage tank 3, and the other end of the connecting pipe 6 is connected to the connecting pipe 6 component. The anti-backflow rubber pipe 7 is arranged at one end of the connecting pipe 6 and is arranged inside the U-shaped water storage tank 3. The anti-backflow rubber pipe 7 is a thin-walled rubber ring and has a hollow conical structure. The bottom of the hollow cone of the anti-backflow rubber pipe 7 is connected to the connecting pipe 6, and the larger-diameter end of the anti-backflow rubber pipe 7 is connected to the connecting pipe.

[0044] One end of the anti-backflow rubber pipe 7 away from the connecting pipe 6 is a flat end. The middle of the flat end is connected to the U-shaped water storage tank 3 through a vent hole, and the other end is connected to the connecting pipe 6.

[0045] The anti-backflow component adopts a hollow conical structure with different diameters at the upper and lower parts. Under normal circumstances, it is used to ensure the air pressure balance in the observation hole. Under extreme conditions, such as heavy rain or other factors causing surface water to flow into the U-shaped water storage tank 3 and filling the U-shaped water storage tank 3 with surface water, the anti-backflow device closes due to the action of water pressure, effectively preventing surface water from flowing into the observation hole and avoiding pollution of groundwater or affecting the accuracy of monitoring data.

[0046] The filtering component includes a filter screen 8 and a mounting plate 9. The mounting plate 9 is arranged inside the U-shaped water storage tank 3. The filter screen 8 is installed on the mounting plate 9 through mounting bolts 15. The filter screen 8 is made of a fine stainless steel mesh or other corrosion-resistant materials and has a reasonable pore size design to block fine particulate matters such as sand grains and dust from entering the observation hole. The filter screen 8 is fixedly connected to the inner wall of the U-shaped water storage tank 3 through a fixed bracket. The filter screen 8 can filter fine particulate matters, reducing the risk of blockage of the observation hole caused by the accumulation of fine particulate matters. It improves the accuracy of monitoring data, prevents these substances from interfering with the monitoring results of water level and water quality, and ensures the accuracy and reliability of monitoring data.

[0047] Between the pipeline component and the groundwater observation hole 1 on the ground, a filter material layer 10 and a clay ball layer 11 are successively arranged from bottom to top. The pipeline component includes a water stop pipe 12, a filter pipe 13, and a sedimentation pipe 14. The water stop pipe 12, the filter pipe 13, and the sedimentation pipe 14 are arranged successively from top to bottom. One end of the water stop pipe 12 extends out of the filter material layer 10. The other end of the water stop pipe 12 is flush with the end of the filter material layer 10. The positions of the filter pipe 13 and the sedimentation pipe 14 correspond to the position of the filter material layer 10. The filter pipe 13 is provided with a plurality of filter holes.

[0048] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A protective device for preventing surface water from flowing into a groundwater observation hole, characterized in that: A groundwater observation hole is provided on the ground, and a pipeline assembly is provided on the ground through the groundwater observation hole; a protective structure is provided on the top of the pipeline assembly; The protection structure includes a protective cover, a U-shaped water storage tank, an anti-backflow component, and a filter component; The U-shaped water storage tank is installed below the protective cover plate, the protective cover plate is installed above the pipeline assembly, and a plurality of anti-backflow assemblies are installed at the bottom of the U-shaped water storage tank. The anti-backflow assemblies can make the pressure in the U-shaped water storage tank consistent with that in the pipeline assembly; The filter component is arranged in the U-shaped water storage tank, and the filter component is arranged above the anti-backflow component.

2. The protective device for preventing surface water from flowing into a groundwater observation hole according to claim 1, characterized in that: The protective cover plate is connected to the upper part of the pipeline assembly by threads, and the height of the upper surface of the protective cover plate is level with the ground.

3. The protective device for preventing surface water from flowing into a groundwater observation hole according to claim 1, characterized in that: An annular mounting ring is arranged at the bottom of the protective cover plate, the inner wall of the U-shaped water storage tank is threadedly connected to the annular mounting ring, and a sealing ring is arranged inside the pipeline assembly and the outer wall of the U-shaped water storage tank.

4. The protective device for preventing surface water from flowing into a groundwater observation hole according to claim 1, characterized in that: The anti-backflow component includes a connecting pipe and an anti-backflow rubber tube. The connecting pipe is arranged at the bottom of the U-shaped water storage tank. One end of the connecting pipe is connected to the U-shaped water storage tank, and the other end of the connecting pipe is connected to the connecting pipe component. The anti-backflow rubber tube is arranged at one end of the connecting pipeline, and the anti-backflow rubber tube is arranged in the U-shaped water storage tank.

5. The protective device for preventing surface water from flowing into a groundwater observation hole according to claim 4, characterized in that: The anti-backflow rubber tube is a thin-walled rubber ring with a hollow cone structure.

6. The protective device for preventing surface water from flowing into a groundwater observation hole according to claim 1, characterized in that: The filter assembly comprises a filter screen and a mounting plate. The mounting plate is arranged inside the U-shaped water storage tank, and the filter screen is mounted on the mounting plate by mounting bolts.

7. The protection device for preventing surface water from flowing into a groundwater observation hole according to claim 1, characterized in that: A filter material layer and a clay ball layer are arranged in sequence from bottom to top between the pipeline assembly and the groundwater observation hole on the ground.

8. The protection device for preventing surface water from flowing into a groundwater observation hole according to claim 7, characterized in that: The pipeline assembly includes a water stop pipe, a filter pipe, and a sedimentation pipe; the water stop pipe, the filter pipe, and the sedimentation pipe are arranged in sequence from top to bottom; One end of the water stop pipe extends out of the filter material layer; the other end of the water stop pipe is flush with the end of the filter material layer; The positions of the filter tube and the sedimentation tube correspond to the positions of the filter material layer.

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