L-shaped underground water recharge well

Abstract

The utility model relates to the technical field of recharge wells, in particular to an L-shaped underground water recharge well which comprises a well casing arranged between a building and a foundation pit, the well casing is of an L-shaped structure, and a bottom bent section of the well casing is transversely arranged between the building and the foundation pit. Wherein a well hole for placing a well casing is formed in the ground, and a sealing layer and a filtering layer are arranged in the well hole; the well casing of the L-shaped structure is used for replacing a traditional single-row multi-opening well, the well casing can be arranged in any aquifer, vertical and horizontal recharge wells can be arranged in all directions of a protected building and in an appointed recharge aquifer according to needs, water sources can be supplied to the appointed aquifer by starting a water pump, and the well casing can be arranged in any water-containing layer in any direction according to needs. The single-opening L-shaped well replaces a traditional single-row multi-opening well, the problem that the construction site of the recharge well is limited is solved, the recharge efficiency of the single-opening L-shaped well is higher than that of the single-row multi-opening well, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of recharging wells, in particular to an L-shaped groundwater recharging well. Background Art

[0002] As urbanization advances, more and more deep foundation pits are emerging. When dewatering foundation pits in dense urban centers, the presence of adjacent buildings will aggravate the drop in water levels between the foundation pits and buildings, thereby inducing uneven surface settlement and causing certain harm to adjacent buildings. To solve this problem, the more economical method currently is to recharge groundwater in front of adjacent buildings.

[0003] Traditionally, the construction method of recharge wells is to construct a single row of recharge wells in front of the protected building. For example, Chinese patent announcement number "CN218757506U" discloses a protective structure for sensitive buildings near a water-rich sand foundation pit, which is located between the foundation pit and the sensitive building and includes an isolation wall and a recharge well. The recharge well is arranged between the isolation wall and the sensitive building, and the number of the recharge wells is multiple.

[0004] However, the construction area occupied by a single row of well points is relatively large. In addition, the environment in front of the protected buildings is often complex, such as the existence of municipal facilities in front of the buildings, underground pipelines, and the narrow distance between the foundation pit and the protected buildings. This will limit the construction site of the recharge well. Based on this, in order to further optimize the applicability of existing recharge wells, we propose an L-shaped groundwater recharge well. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the prior art that single-row well points occupy a large construction area, the construction site is limited, and an L-shaped groundwater recharging well is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An L-shaped groundwater recharge well is designed, comprising a well pipe placed between a building and a foundation pit, the well pipe being in an L-shaped structure, and a bottom bending section of the well pipe being placed horizontally between the building and the foundation pit;

[0008] Wherein, a well hole for placing a well pipe is opened on the ground, and a sealing layer and a filter layer are arranged in the well hole;

[0009] The well pipe comprises a well wall pipe and a water filter pipe, and the water filter pipe is opposite to the filter layer.

[0010] Furthermore, a filter net is sleeved on the outer side of the water filter pipe.

[0011] Furthermore, the filter screen is composed of two meshes, and the mesh holes of the two meshes are arranged in an alternating manner.

[0012] Furthermore, a reinforcing component is provided at the bent portion of the well pipe, and the reinforcing component is used to fix the well pipe.

[0013] Furthermore, the reinforcement component includes a plurality of water bags, which are respectively fixed to both ends of the bent portion and the horizontal section of the well pipe, wherein the water bags are also provided with a water inlet valve and a water outlet valve.

[0014] Furthermore, connecting rings are fixedly installed on the outer side of the well pipe and in the inner circle of the water bag, the connecting rings are stacked up and down, and the connecting rings are connected by fasteners.

[0015] The utility model proposes an L-shaped groundwater recharge well, which has the following beneficial effects: the utility model adopts an L-shaped well pipe to replace the traditional single-row multiple wells, and the layout position can be in any aquifer, and the direction can be in various directions of the protected building according to the needs. Vertical and horizontal recharge wells are arranged in the designated recharge aquifer, and water can be supplied to the designated aquifer by turning on the water pump to achieve the recharge effect. The single L-shaped well replaces the traditional single-row multiple wells, solving the problem of limited construction site for the recharge wells. Secondly, the recharge efficiency of the single L-shaped well is higher than that of the single-row multiple wells, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

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

[0018] Figure 3 This is a schematic diagram of the filter structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the reinforcement component of the utility model.

[0020] In the figure: 1. well pipe; 11. well wall pipe; 12. water filter pipe; 13. filter net; 2. foundation pit; 3. sealing layer; 4. filter layer; 5. reinforcement component; 51. water bag; 52. water inlet valve; 53. drain valve; 54. connecting ring; 55. fastener; 6. building. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-4 An embodiment of the utility model discloses an L-shaped groundwater recharge well. In order to solve the problem that the construction site of the recharge well is limited, an L-shaped groundwater recharge well is proposed in combination with the horizontal well drilling technology. In this way, it can meet the recharge operation of the designated pressurized aquifer and the designated recharge area, which can effectively solve the problem of limited construction site.

[0023] The reinjection well includes a well pipe 1 placed between the building 6 and the foundation pit 2. Specifically, the well pipe 1 is an L-shaped structure. The L-shaped well pipe can be realized by using horizontal well drilling technology, and its bottom bending section is horizontally placed between the building 6 and the foundation pit 2.

[0024] That is to say, in this embodiment, an L-shaped well pipe 1 is used to replace the traditional single-row multiple wells. The layout position can be in any aquifer, and the direction can be in all directions of the protected building as needed. Vertical and horizontal recharge wells are arranged in the designated recharge aquifer. Turning on the water pump can replenish water to the designated aquifer to achieve the recharge effect.

[0025] A well hole for placing a well pipe 1 is opened on the ground, and a sealing layer 3 and a filter layer 4 are arranged in the well hole, specifically, a concrete layer in this embodiment, and the filter layer 4 can be set as a gravel filter layer. This design structure is a conventional means for technicians in the field, and will not be described in detail here;

[0026] The well pipe 1 includes a well wall pipe 11 and a water filter pipe 12 , and the water filter pipe 12 is opposite to the filter layer 4 .

[0027] In some embodiments, in the utility model, a filter screen 13 is also provided on the outside of the water filter pipe 12, that is, a filter screen 13 is provided on the outer wall of the L-shaped recharge well, which can filter impurities in the recharge water source and reduce the possibility of impurities clogging the gaps in the aquifer.

[0028] On the basis of the above embodiment, the filter screen 13 is composed of two meshes, and the mesh holes of the two meshes are staggered. By adopting a staggered structure design, the pore size that effectively intercepts impurities can be further reduced, thereby further improving the filtering effect on impurities.

[0029] Furthermore, in the embodiment of the utility model, a reinforcing component 5 is provided at the bent portion of the well pipe 1 , and the reinforcing component 5 is used to fix the well pipe 1 .

[0030] In a preferred embodiment, the reinforcement component 5 includes a plurality of water bags 51, which are respectively fixed at both ends of the bending part and the horizontal section of the well pipe 1, wherein the water bag 51 is also provided with a water inlet valve 52 and a drain valve 53, that is, in the utility model, the bending part of the well pipe 1 is supported by the provided water bag 51, so that the installation stability of the well pipe 1 in the wellbore can be effectively improved. In specific operation, the water inlet valve 52 is opened and the drain valve 53 is closed, the water inlet valve 52 is connected to an external water pump, and the external water pump injects water into the water bag 51. After the water injection is completed, the water bag 51 expands to support the wellbore and the well pipe 1. When the recharging is completed, the water in the water bag 51 can also be discharged through the drain valve 53, so as to achieve the purpose of reciprocating utilization. In addition, it should be noted that the water bags 51 described in the embodiment are set to four, two of which are connected to the two ends of the bending part of the well pipe 1, and the other two are connected to the two ends of the horizontal section of the well pipe 1.

[0031] On the basis of the above-mentioned embodiments, in the utility model, connecting rings 54 are fixedly installed on the outer side of the well pipe 1 and in the inner circle of the water bag 51. The connecting rings 54 are stacked up and down, and the connecting rings 54 are connected by fasteners 55. In this embodiment, the fasteners 55 are preferably configured as bolts, and the two connecting rings 54 are fixed by bolts to fix the water bag 51 on the outer side of the well pipe 1.

[0032] In summary, the single L-shaped well in the utility model replaces the traditional single-row multiple wells, solving the problem of limited construction site for reinjection wells. Secondly, the reinjection efficiency of the single L-shaped well is equivalent to that of the single-row multiple wells, thereby improving work efficiency.

[0033] In the specific work, firstly, a hole is drilled by horizontal well drilling technology, and then the well pipe 1 is put in after the hole is cleaned and the slurry is changed. A certain water pressure is first applied to the water bag 51 so that the well pipe 1 is loose in the aperture. Then, the filter material is backfilled. The filter material is fine gravel with a certain water content and fluidity. Through pumping, the filter material can fill the gap between the L-shaped hole and the well pipe 1. Then, the water bag 51 is fully opened to keep the entire length of the well pipe 1 in the center of the aperture section, thereby completing the construction of the water filter pipe 12 and the filter layer 4, and then backfilling fine stone concrete to complete the construction of the well wall pipe 11 and the sealing layer 3. After the construction is completed, the recharging operation can be started.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An L-shaped groundwater recharging well, comprising a well pipe (1) placed between a building (6) and a foundation pit (2), characterized in that: The well pipe (1) is in an L-shaped structure, and its bottom bent section is horizontally placed between the building (6) and the foundation pit (2); A wellbore for placing a well pipe (1) is opened on the ground, and a sealing layer (3) and a filter layer (4) are arranged in the wellbore; The well pipe (1) comprises a well wall pipe (11) and a water filter pipe (12), and the water filter pipe (12) is opposite to the filter layer (4).

2. The L-shaped groundwater recharge well according to claim 1, characterized in that: A filter screen (13) is also sleeved on the outer side of the water filter pipe (12).

3. The L-shaped groundwater recharge well according to claim 2, characterized in that: The filter screen (13) is composed of two meshes, and the mesh holes of the two meshes are arranged in a staggered manner.

4. The L-shaped groundwater recharge well according to claim 1, characterized in that: A reinforcing component (5) is provided at the bent portion of the well pipe (1), and the reinforcing component (5) is used to fix the well pipe (1).

5. The L-shaped groundwater recharge well according to claim 4, characterized in that: The reinforcing component (5) comprises a plurality of water bags (51), and the plurality of water bags (51) are respectively fixed to the two ends of the bent portion and the horizontal section of the well pipe (1), wherein the water bags (51) are also provided with a water inlet valve (52) and a water outlet valve (53).

6. The L-shaped groundwater recharge well according to claim 5, characterized in that: Connecting rings (54) are fixedly installed on the outer side of the well pipe (1) and in the inner ring of the water bag (51); the connecting rings (54) are stacked up and down, and the connecting rings (54) are connected by fasteners (55).

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