Underground water control structure close to subway group foundation pit

Abstract

The utility model discloses an underground water control structure of a foundation pit close to a metro group, and particularly relates to the field of building environment rock-soil foundation pit engineering, the underground water control structure comprises a foundation pit close to the metro, and one side of the foundation pit close to the metro is connected with a far metro foundation pit in a lap joint mode; a dewatering well is in lap joint with the bottom close to the subway foundation pit. During use, the arrangement of the near subway foundation pit and the far subway foundation pit ensures comprehensive underground water control, the dewatering well is the key to reduce the underground water level, and the water stop material layer and the water stop curtain structure are matched to effectively prevent underground water from flowing into the foundation pit and maintain the stability of the foundation pit, and the observation well monitors the change of the underground water level in real time. A basis is provided for adjusting a control strategy, water level observation is more accurate and convenient through combination of a connection mounting plate and measuring scales, a water pump is a power source for pumping underground water, it is ensured that a dewatering well can work continuously and effectively, and the water pump is prolonged in service life through double filtration of a filter layer and a filter system; and cyclic utilization of underground water is realized.

Description

Technical Field

[0001] The utility model relates to the field of building environment rock and soil foundation pit engineering, and more specifically, to a groundwater control structure of a group foundation pit adjacent to a subway. Background Art

[0002] Groundwater control in building foundation pits and basements: Ensure the safety of the foundation pits and protect the surrounding environment, especially the groundwater control of the subway-side group foundation pits. The traditional groundwater control method has poor results, lacks foundation pit safety guarantee, and lacks the function of protecting the groundwater level of sensitive protective structures such as subways around the foundation pits;

[0003] After searching, the existing patent (application number: 202310609346.0) discloses a groundwater control structure for a group of foundation pits near a subway, including a water-stop curtain structure, a foundation pit near the subway, a foundation pit far from the subway, an observation well, a precipitation well and a recharge well; the foundation pit near the subway is arranged near a subway station or a subway section tunnel; the inner sides of the foundation pit near the subway and the foundation pit far from the subway are respectively provided with a water-stop curtain structure; the observation well is arranged in the foundation pit near the subway, in the foundation pit far from the subway, and in the foundation pit near the subway and outside the foundation pit far from the subway; the precipitation well is arranged in the foundation pit near the subway and in the foundation pit far from the subway; the recharge well is arranged outside the foundation pit near the subway and outside the foundation pit far from the subway. The groundwater control structure for a group of foundation pits near the subway of the present invention solves the problems of the groundwater control structure for the group of foundation pits near the subway suffering from leakage of the water-stop curtain, protecting the subway station, protecting the safety of the subway section tunnel, and the structural anti-seepage and environmental deformation of other surrounding buildings and municipal pipelines. In the process of realizing the utility model, the inventor found that the prior art has the following problems:

[0004] This type of groundwater control structure has poor functionality, and mainly focuses on the setting of water-stop curtains and precipitation wells. There is relatively little description of the filtration system, and the water quality control may not be precise enough in actual application, so there are certain limitations;

[0005] Therefore, in order to solve the above problems, a groundwater control structure for foundation pits near subways is proposed. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a groundwater control structure for a group of foundation pits adjacent to subways to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a groundwater control structure of a group of foundation pits near a subway, comprising a foundation pit near the subway, one side of the foundation pit near the subway is overlapped and connected to a foundation pit far from the subway; the bottom of the foundation pit near the subway is overlapped and connected to a precipitation well, the surface of the precipitation well is tightly fitted with a water-stopping material layer, the surface of the water-stopping material layer is overlapped and connected to a water-stopping curtain structure, one side of the precipitation well is overlapped and connected to an observation well, the inside of the observation well is fixedly connected with a connecting mounting plate on both sides, one side of the connecting mounting plate is fixedly connected with a measuring scale, one side of the bottom of the precipitation well is embedded with a water pump, the inside top of the precipitation well is embedded with a filter layer, and the surface of the filter layer is tightly fitted with a filter system.

[0008] Preferably, one side of the surface of the precipitation well is overlapped and connected with a recharging well.

[0009] Preferably, semicircular filter screens are fixedly connected to both sides of the filtration system.

[0010] Preferably, there are several precipitation wells, and a filter layer is embedded in the upper part of the interior, and the filter system is tightly attached to the surface of the filter layer.

[0011] Preferably, the observation well and the precipitation well are arranged on the left and right, and a measurement scale is provided inside the observation well.

[0012] Preferably, an outer wall of one side of the water pump is embedded into the inner wall of the lower half of the observation well to form an embedded connection structure.

[0013] Preferably, there are several recharge wells.

[0014] Preferably, the semicircular filter is in an arc shape and is symmetrically distributed and connected.

[0015] Technical effects and advantages of the utility model:

[0016] Compared with the existing technology, when this groundwater control structure near the subway group foundation pit is used, the setting of the foundation pit near the subway and the foundation pit far from the subway takes into account the impact of the foundation pit at different distances on the subway, ensuring comprehensive groundwater control. The precipitation well is the key to lowering the groundwater level. With the water-stop material layer and the water-stop curtain structure, it can effectively block the groundwater from flowing into the foundation pit and maintain the stability of the foundation pit. The setting of the observation well is convenient for real-time monitoring of groundwater level changes and provides a basis for adjusting the control strategy. The combination of the connecting mounting plate and the measuring scale makes water level observation more accurate and convenient. The water pump is the power source for extracting groundwater, ensuring that the precipitation well can work continuously and effectively. The double filtration of the filter layer and the filtration system ensures the quality of the extracted water and extends the service life of the water pump. The setting of the recharge well realizes the recycling of groundwater, which not only meets environmental protection requirements but also reduces engineering costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the front view structure of the overall precipitation well of the utility model.

[0019] Figure 3 It is a schematic diagram of the structure of the enlarged point A of the utility model as a whole.

[0020] Figure 4 The utility model is a schematic diagram of the internal structure of the overall observation well.

[0021] The accompanying drawings are marked as follows: 1. Foundation pit near subway; 2. Foundation pit far from subway; 3. Dewatering well; 4. Filter layer; 5. Water-stop curtain structure; 6. Observation well; 7. Measuring scale; 8. Recharge well; 9. Filtration system; 10. Semicircular filter screen; 11. Water-stop material layer; 12. Connecting mounting plate; 13. Water pump. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] As attached Figure 1-4 The shown structure is a groundwater control structure of a group of foundation pits near a subway, comprising a foundation pit 1 near the subway, one side of the foundation pit 1 near the subway is overlapped and connected to a foundation pit 2 far from the subway; the bottom of the foundation pit 1 near the subway is overlapped and connected to a drainage well 3, the surface of the drainage well 3 is tightly fitted with a water-stopping material layer 11, the surface of the water-stopping material layer 11 is overlapped and connected to a water-stopping curtain structure 5, one side of the drainage well 3 is overlapped and connected to an observation well 6, the inside of the observation well 6 has two sides fixedly connected with connecting mounting plates 12, one side of the connecting mounting plate 12 is fixedly connected with a measuring scale 7, one side of the bottom of the drainage well 3 is embedded with a water pump 13, the top of the drainage well 3 is embedded with a filter layer 4, the surface of the filter layer 4 is tightly fitted with a filter system 9, and one side of the surface of the drainage well 3 is overlapped and connected to a recharge well 8.

[0025] Among them: the setting of foundation pit 1 near the subway and foundation pit 2 far from the subway takes into account the impact of foundation pits at different distances on the subway, ensuring comprehensive groundwater control. The precipitation well 3 is the key to lowering the groundwater level. Together with the water-stopping material layer 11 and the water-stopping curtain structure 5, it can effectively block the groundwater from flowing into the foundation pit and maintain the stability of the foundation pit. The setting of the observation well 6 is convenient for real-time monitoring of groundwater level changes and provides a basis for adjusting the control strategy. The combination of the connecting mounting plate 12 and the measuring scale 7 makes water level observation more accurate and convenient. The water pump 13 is the power source for extracting groundwater, ensuring that the precipitation well can work continuously and effectively. The double filtration of the filter layer 4 and the filtration system 9 ensures the quality of the extracted water and extends the service life of the water pump. The setting of the recharge well 8 realizes the recycling of groundwater, which not only meets environmental protection requirements but also reduces engineering costs.

[0026] Embodiment 2

[0027] Based on the first embodiment, the solution in the first embodiment is further detailed in combination with the following specific working method, as described below:

[0028] like Figure 2 As shown, as a preferred embodiment; semicircular filter screens 10 are fixedly connected to both sides of the filtration system 9. Further, the semicircular filter screens 10 effectively filter out impurities and particulate matter in the water, ensuring the purity of the water entering the system and protecting subsequent equipment from damage.

[0029] The working process of the utility model is as follows:

[0030] When this type of groundwater control structure for the foundation pits near the subway is in use, the setting of the foundation pit 1 near the subway and the foundation pit 2 far from the subway takes into account the impact of the foundation pits at different distances on the subway, ensuring comprehensive groundwater control. The precipitation well 3 is the key to lowering the groundwater level. Together with the water-stopping material layer 11 and the water-stopping curtain structure 5, it can effectively block the groundwater from flowing into the foundation pit and maintain the stability of the foundation pit. The setting of the observation well 6 is convenient for real-time monitoring of groundwater level changes and provides a basis for adjusting the control strategy. The combination of the connecting mounting plate 12 and the measuring scale 7 makes water level observation more accurate and convenient. The water pump 13 is the power source for extracting groundwater, ensuring that the precipitation well can continue to work effectively. The double filtration of the filter layer 4 and the filtration system 9 ensures the quality of the extracted water and extends the service life of the water pump. The setting of the recharge well 8 realizes the recycling of groundwater, which not only meets environmental protection requirements but also reduces engineering costs. This is the working process and working principle of the device.

[0031] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0032] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0033] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A groundwater control structure for a group of foundation pits near a subway, comprising a foundation pit near a subway (1), characterized in that: One side of the near-subway foundation pit (1) is overlapped and connected with a far-subway foundation pit (2); The bottom of the near-subway foundation pit (1) is overlapped and connected with a drainage well (3), the surface of the drainage well (3) is tightly fitted with a water-stopping material layer (11), the surface of the water-stopping material layer (11) is overlapped and connected with a water-stopping curtain structure (5), one side of the drainage well (3) is overlapped and connected with an observation well (6), both sides of the inside of the observation well (6) are fixedly connected with a connecting mounting plate (12), one side of the connecting mounting plate (12) is fixedly connected with a measuring scale (7), one side of the bottom of the drainage well (3) is embedded with a water pump (13), the top of the inside of the drainage well (3) is embedded with a filter layer (4), and the surface of the filter layer (4) is tightly fitted with a filter system (9).

2. The groundwater control structure for a group of foundation pits near a subway according to claim 1, characterized in that: One side of the surface of the precipitation well (3) is overlapped and connected with a recharging well (8).

3. The groundwater control structure for a group of foundation pits near a subway according to claim 1 is characterized by: Semicircular filter screens (10) are fixedly connected to both sides of the filtering system (9).

4. The groundwater control structure for a group of foundation pits near a subway according to claim 1 is characterized by: The number of the precipitation wells (3) is several, and a filter layer (4) is embedded in the upper part of the interior, and a filter system (9) is tightly attached to the surface of the filter layer (4).

5. The groundwater control structure for a group of foundation pits near a subway according to claim 1, characterized in that: The observation well (6) and the precipitation well (3) are arranged on the left and right, and a measurement scale (7) is provided inside the observation well (6).

6. The groundwater control structure for a group of foundation pits near a subway according to claim 1, characterized in that: One side outer wall of the water pump (13) is embedded into the inner wall of the lower half of the observation well (6) to form an embedded connection structure.

7. The groundwater control structure for a group of foundation pits near a subway according to claim 2, characterized in that: The number of the reinjection wells (8) is several.

8. The groundwater control structure for a group of foundation pits near a subway according to claim 3, characterized in that: The semicircular filter screen (10) is in an arc shape and is symmetrically distributed and connected.

Images