Multifunctional underground well structure

Abstract

The utility model relates to the technical field of underground well structures, in particular to a multifunctional underground well structure, which is characterized in that a pipe body of an underground well device is provided with a second water-resisting layer used for isolating a phreatic aquifer from a confined aquifer, and the upper end and the lower end of the second water-resisting layer are provided with water filtering layers used for filtering and collecting underground water in a stratum; the outer side of the water filtering layer is provided with a dense-mesh screen used for being matched with the water filtering layer to filter and collect underground water in the stratum. The well pipe is provided with a water filtering pipe of a water filtering layer in the range of the diving and confined water aquifer; meanwhile, a well pipe is arranged in the second water-resisting layer, two water-stopping steel plates are arranged in the well pipe, and a water-stopping material is filled in the range of the outer water-resisting layer and used for separating the hydraulic connection between the upper water-bearing layer and the lower water-bearing layer; a first hole, a second hole and a third hole are formed in each layer of water stop steel plate, and a layered observation device and a recharge device are matched, so that the function of layered observation or recharge of multiple layers of underground water is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of underground well structures, in particular to a multifunctional underground well structure. Background Art

[0002] To ensure the safety of the foundation pit and reduce the impact on the surrounding environment, water level observation should be carried out during the process of foundation pit groundwater treatment, and early warning should be given in time when abnormalities are found; due to the settlement and deformation of the surrounding environment caused by the decline of the water level outside the pit, the surrounding environment can be protected by measures of groundwater recharge. For example, as shown in a shallow groundwater level and water quality observation well structure with the Chinese patent application number CN202022302141.2, the well pipe includes an upper well pipe section and a lower well pipe section. The lower end of the upper well pipe section is communicated with the upper end of the lower well pipe section. A manhole cover is arranged at the upper end of the upper well pipe section, a plug is arranged at the lower end of the lower well pipe section, a plurality of water permeable holes are arranged on the side wall of the lower well pipe section, a filter bag is sleeved outside the lower well pipe section, and a sand and gravel filter layer covering the lower well pipe section and the filter bag is filled outside the lower well pipe section; a protection pier is sleeved outside the upper well pipe section, and an annular water stop pad is arranged between the protection pier and the sand and gravel filter layer, and the water stop pad is sleeved outside the upper well pipe section.

[0003] However, at present, the existing precipitation wells will set observation wells or recharge wells according to the distribution of groundwater in layers. For those involving multiple layers of groundwater, multiple wells often need to be set up to achieve the purpose, which requires a large space in the plane position and has a high cost; thus, it is not convenient to use a single underground well structure to achieve layered observation and layered recharge of groundwater. Content of the Utility Model

[0004] To solve the problem that the existing precipitation wells at present will set observation wells or recharge wells according to the distribution of groundwater in layers. For those involving multiple layers of groundwater, multiple wells often need to be set up to achieve the purpose, which requires a large space in the plane position and has a high cost; thus, it is not convenient to use a single underground well structure to achieve layered observation and layered recharge of groundwater as mentioned in the above background art, the utility model provides the following technical solutions:

[0005] A multifunctional underground well structure includes an underground well device arranged under the formation for collecting groundwater. At the top of the formation, there is a layered observation device for layered observation of the groundwater in the underground well device, and a recharge device for recharging the groundwater in the underground well device is arranged at the top of the formation, and the recharge device is located on the right side of the layered observation device;

[0006] On the pipe body of the underground well device, a second water - proof layer for isolating the phreatic aquifer and the confined aquifer is provided. Filter layers for filtering and collecting groundwater in the formation are provided at the upper and lower ends of the second water - proof layer. A wire mesh with fine meshes for cooperating with the filter layer to filter and collect groundwater in the formation is provided outside the filter layer.

[0007] Furthermore, a first water - proof layer is provided at the top of the underground well device, a sedimentation pipe is provided at the bottom end of the underground well device, and a water - stop steel plate for stratifying the groundwater in the formation is provided inside the underground well device, and there are two water - stop steel plates.

[0008] Furthermore, a first hole for cooperating with a stratification observation device to conduct stratification observation of groundwater is opened at the top end of the water - stop steel plate, a third hole for conducting stratification observation of groundwater in cooperation with the first hole is opened at the top end of the water - stop steel plate, and a second hole for cooperating with a recharge device to recharge groundwater is opened at the top end of the first hole.

[0009] Furthermore, the stratification observation device includes a first fixed pipe inserted into the first hole and the third hole. A water level gauge for stratifying and monitoring the groundwater in the underground well device is provided inside the first fixed pipe. A stratification system assembly is fixedly installed at the top end of the formation, and a connecting wire for connecting with the water level gauge is provided at the bottom end of the stratification system assembly.

[0010] Furthermore, the recharge device includes a second fixed pipe inserted into the second hole. A recharge pipe is fixedly installed at the top end of the second fixed pipe, and a recharge assembly for recharging the groundwater in the underground well device is provided at the top end of the recharge pipe.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] By providing an underground well device, a stratification observation device, and a recharge device, filter pipes with filter layers are provided in the well pipe within the phreatic and confined aquifer ranges; at the same time, well pipes are provided within the second water - proof layer, two water - stop steel plates are provided inside the well pipes, and water - proof materials are filled within the range of the outer water - proof layer to cut off the hydraulic connection between the upper and lower aquifers; holes one, two, and three are provided on each water - stop steel plate, and in cooperation with the stratification observation device and the recharge device, the function of multi - layer groundwater stratification observation or recharge is achieved. Furthermore, the function of multi - layer groundwater stratification observation of water level and the function of multi - layer groundwater stratification recharge can be realized simultaneously. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the underground well device of the present utility model;

[0015] Figure 3 Top view of the internal water stop steel plate of the present utility model;

[0016] Figure 4 Cooperating diagram of the layered observation device and the recharge device of the present utility model;

[0017] Figure 5 For the present utility model Figure 4 Enlarged view at location A in the present utility model.

[0018] In the attached drawings, the list of component names represented by each reference numeral is as follows:

[0019] 100 - formation;

[0020] 200 - underground well device, 210 - first water - proof layer, 220 - water - filtering layer, 230 - fine - mesh net, 240 - second water - proof layer, 250 - water - stop steel plate, 251 - hole one, 252 - hole two, 253 - hole three, 260 - sedimentation pipe;

[0021] 300 - layered observation device, 310 - layered system component, 320 - connecting wire, 330 - first fixed pipe, 340 - water - level gauge;

[0022] 400 - recharge device, 410 - recharge component, 420 - recharge pipe, 430 - second fixed pipe. Specific embodiments

[0023] The preferred specific embodiments for implementing the present utility model are described in detail below, and a clear and complete description is made in conjunction with the attached drawings.

[0024] Please refer to Figures 1-5 , the present utility model provides a multi - functional underground well structure.

[0025] It includes an underground well device 200 below the formation 100 for collecting groundwater, a layered observation device 300 provided at the top of the formation 100 for layer - by - layer observation of the groundwater in the underground well device 200, a recharge device 400 provided at the top of the formation 100 for recharging the groundwater in the underground well device 200, and the recharge device 400 is located on the right side of the layered observation device 300.

[0026] Multi-layer groundwater often consists of upper phreatic water, aquitard and multi-layer confined aquifers; a second aquitard 240 for isolating the phreatic aquifer and the confined aquifer is provided on the pipe body of the underground well device 200, and waterproof materials are filled within the range outside the second aquitard 240 to cut off the hydraulic connection between the upper and lower aquifers; filter layers 220 for filtering and collecting groundwater in the formation 100 are provided at the upper and lower ends of the second aquitard 240, and the filter layers 220 are arranged within the ranges of the phreatic and confined water aquifers of the formation 100 and are connected to the well pipe of the underground well device 200 through filter pipes, so as to keep the groundwater in the formation 100 enter the well pipe of the underground well device 200 through the filter pipes on the filter layers 220.

[0027] A wire mesh 230 for cooperating with the filter layer 220 to filter and collect groundwater in the formation 100 is provided outside the filter layer 220, and the wire mesh 230 is arranged outside the filter pipes on the filter layer 220, and the pores between the filter pipes and the drill holes are filled with filled filter materials; so as to keep the groundwater in the formation 100 enter the well pipe of the underground well device 200 through the filter pipes on the filter layer 220.

[0028] A first aquitard 210 is provided at the top of the underground well device 200, and a sedimentation pipe 260 is provided at the bottom end of the underground well device 200 to sediment the sludge in the well pipe of the underground well device 200 into the sedimentation pipe 260; a waterproof steel plate 250 for stratifying the groundwater in the formation 100 is provided within the underground well device 200, and there are two waterproof steel plates 250, and the two waterproof steel plates 250 are linearly arrayed within the well pipe of the underground well device 200.

[0029] A hole one 251 for cooperating with the stratification observation device 300 to conduct stratification observation on groundwater is opened at the top end of the waterproof steel plate 250, a hole three 253 for cooperating with the hole one 251 to conduct stratification monitoring on groundwater is opened at the top end of the waterproof steel plate 250, and a hole two 252 for cooperating with the recharge device 400 to conduct groundwater recharge is opened at the top end of the hole one 251; so as to achieve the functions of multi-layer groundwater stratification monitoring or recharge.

[0030] The stratification observation device 300 includes a first fixed pipe 330 inserted into the hole one 251 and the hole three 253, and a water level gauge 340 for conducting stratification monitoring on the groundwater within the underground well device 200 is provided within the first fixed pipe 330, so as to facilitate monitoring the water level of the groundwater within the underground well device 200 by using the water level gauge 340; a stratification system component 310 is fixedly installed at the top end of the formation 100, and the stratification system component 310 belongs to the prior art, and those skilled in the art can know how the stratification system component 310 realizes the stratification monitoring of the groundwater within the underground well device 200 through conventional means; a connection line 320 for connecting with the water level gauge 340 is provided at the bottom end of the stratification system component 310.

[0031] The recharge device 400 includes a fixing pipe two 430 inserted into the hole two 252. A recharge pipe 420 is fixedly installed at the top end of the fixing pipe two 430. A recharge assembly 410 for recharging the groundwater in the underground well device 200 is provided at the top end of the recharge pipe 420. And the recharge assembly 410 belongs to the prior art, and those skilled in the art can know how the recharge assembly 410 realizes the recharge of the groundwater in the underground well device 200 through conventional means. Furthermore, the functions of observing the water levels of multiple layers of groundwater separately, recharging multiple layers of groundwater separately, and observing and recharging multiple layers of groundwater in a mixed manner can be realized.

[0032] Based on the above content and the drawings, those skilled in the art can understand and implement the present utility model. In addition, any non-creative modifications made to the present utility model by those skilled in the art without creative efforts still fall within the protection scope of the present utility model.

Claims

1. A multifunctional underground well structure, characterized in that: It comprises an underground well device (200) arranged below a stratum (100) and used for collecting groundwater, a stratified observation device (300) for stratified observation of groundwater in the underground well device (200) arranged at the top of the stratum (100), a reinjection device (400) for reinjecting groundwater in the underground well device (200) arranged at the top of the stratum (100), and the reinjection device (400) is located on the right side of the stratified observation device (300); The pipe body of the underground well device (200) is provided with a second water-blocking layer (240) for isolating the submerged aquifer and the confined aquifer, and the upper and lower ends of the second water-blocking layer (240) are provided with a water filter layer (220) for filtering and collecting groundwater in the formation (100), and the outer side of the water filter layer (220) is provided with a dense mesh (230) for cooperating with the water filter layer (220) to filter and collect groundwater in the formation (100).

2. A multifunctional underground well structure according to claim 1, characterized in that: A water-blocking layer (210) is provided at the top of the underground well device (200), a sedimentation pipe (260) is provided at the bottom of the underground well device (200), and a water-stopping steel plate (250) for stratifying groundwater in the stratum (100) is provided in the underground well device (200), and there are two water-stopping steel plates (250).

3. A multifunctional underground well structure according to claim 2, characterized in that: The top of the water-stopping steel plate (250) is provided with a hole one (251) for cooperating with a stratification observation device (300) to observe groundwater in stratification, the top of the water-stopping steel plate (250) is provided with a hole three (253) for pairing with the hole one (251) to observe groundwater in stratification, and the top of the hole one (251) is provided with a hole two (252) for cooperating with a recharging device (400) to recharge groundwater.

4. A multifunctional underground well structure according to claim 3, characterized in that: The stratified observation device (300) comprises a fixed pipe one (330) inserted into hole one (251) and hole three (253), a water level meter (340) for stratified monitoring of groundwater in the underground well device (200) is arranged in the fixed pipe one (330), a stratified system component (310) is fixedly installed at the top of the stratum (100), and a connecting line (320) for connecting to the water level meter (340) is arranged at the bottom of the stratified system component (310).

5. A multifunctional underground well structure according to claim 3, characterized in that: The reinjection device (400) comprises a second fixed pipe (430) inserted into the second hole (252), a reinjection pipe (420) being fixedly mounted on the top of the second fixed pipe (430), and a reinjection assembly (410) for reinjecting groundwater in the underground well device (200) being arranged on the top of the reinjection pipe (420).

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