Foundation pit earth excavation grading precipitation structure

Abstract

The utility model relates to the technical field of graded precipitation structures, in particular to a foundation pit earthwork excavation graded precipitation structure which comprises a soil matrix, a sealing assembly, a connecting assembly, a fixing assembly and an auxiliary assembly. The sealing assembly comprises mounting plates, supporting rods, mounting frames and a filtering plate, the two mounting plates are detachably connected with the soil matrix and located at the top of the soil matrix, the multiple supporting rods are detachably connected with the mounting plates and located at the bottom of the mounting plates, and the multiple mounting frames are fixedly connected with the supporting rods and located in the soil matrix; the multiple filter plates are fixedly connected with the mounting frame and located at the bottom of the mounting frame, the connecting assembly and the fixing assembly are connected with the mounting frame, and the auxiliary assembly is connected with the connecting assembly. And the water pumping pipe is easily blocked after long-time use, so that the grading precipitation effect is poor.

Description

Technical Field

[0001] The utility model relates to the technical field of graded dewatering structures, in particular to a graded dewatering structure for foundation pit excavation. Background Art

[0002] The groundwater level in some areas is high. During deep foundation pit construction, it is necessary to first dig drainage wells around the foundation pit red line. Continuous pumping is required during the excavation process to lower the groundwater level at the foundation pit location, lowering the groundwater level to 0.5m below the foundation pit bottom. This creates conditions for earthwork excavation and prevents serious collapse accidents caused by water seepage from the pit sidewalls and bottom during excavation. When the underground conditions are complex and there is an impermeable layer of silty clay at the bottom of the deep foundation pit, large wells cannot pump out the shallow groundwater above the impermeable layer, causing great difficulties and safety hazards to earthwork excavation, and also delaying the foundation pit excavation schedule.

[0003] The existing announcement number CN218175891U discloses a deep foundation pit excavation graded dewatering structure, including a soil foundation and a foundation pit, steps are arranged on the pit wall of the foundation pit, the soil foundation is composed of an upper soil layer, aquifer one, an impermeable layer and aquifer two from top to bottom, a plurality of deep water wells and a plurality of shallow water wells are arranged in the soil foundation, the bottom ends of the plurality of deep water wells are all located in aquifer two, the bottom ends of the plurality of shallow water wells are all located in aquifer one, a pumping pipe one and a pumping pipe two are respectively inserted in the plurality of deep water wells and the plurality of shallow water wells, and the top ends of the plurality of pumping pipes one are connected to the same connecting pipe one. The structure is reasonably designed, and through simultaneous graded dewatering operations, different aquifers can be dewatered separately, and the pumping flow rate can be counted at the same time, and the probability of collapse of the foundation pit wall can be reduced, thereby ensuring the stability of the soil foundation within the excavation depth range.

[0004] However, when the deep foundation pit excavation graded dewatering structure is in use, the water pumping pipe is filtered through the coarse sand layer, which can easily cause the water pumping pipe to be blocked after long-term use, resulting in poor graded dewatering effect. Utility Model Content

[0005] The purpose of the utility model is to provide a foundation pit excavation graded dewatering structure, which solves the problem that when the deep foundation pit excavation graded dewatering structure is in use, the water pumping pipe is filtered through the coarse sand layer, which easily causes the water pumping pipe to be blocked after long-term use, resulting in poor graded dewatering effect.

[0006] To achieve the above-mentioned objectives, the utility model provides a foundation pit excavation graded dewatering structure, comprising a soil base, a sealing assembly, a connecting assembly, a fixing assembly and an auxiliary assembly; the sealing assembly comprises a mounting plate, a support rod, a mounting frame and a filter plate, the number of the mounting plates is two, the two mounting plates are respectively detachably connected to the soil base and are respectively located at the top of the soil base, the number of the support rods is multiple, the multiple support rods are respectively detachably connected to the mounting plates and are respectively located at the bottom of the mounting plates, the number of the mounting frames is multiple, the multiple mounting frames are respectively fixedly connected to the support rods and are respectively located inside the soil base, the number of the filter plates is multiple, the multiple filter plates are respectively fixedly connected to the mounting frame and are respectively located at the bottom of the mounting frame, the connecting assembly and the fixing assembly are respectively connected to the mounting frame, and the auxiliary assembly is connected to the connecting assembly.

[0007] In which, the connecting assembly includes a water suction pipe, an extension pipe and a rectifier pipe. There are multiple water suction pipes, and the multiple water suction pipes are detachably connected to the installation frame and are respectively located inside the installation frame. There are multiple extension pipes, and the multiple extension pipes are respectively fixedly connected to the water suction pipe and are respectively located on the top of the water suction pipe. There are two rectifier pipes, and the two rectifier pipes are respectively fixedly connected to the extension pipe and are respectively located on the outside of the mounting plate.

[0008] In which, the fixing assembly includes a fixing spring and a fixing seat. There are multiple fixing springs, and the multiple fixing springs are respectively fixedly connected to the installation frame and are respectively located inside the installation frame. There are multiple fixing seats, and the multiple fixing seats are respectively fixedly connected to the fixing springs and are respectively located on the outside of the water suction pipe.

[0009] Wherein, the fixing assembly further includes a control block, and the number of the control blocks is multiple, and the multiple control blocks are respectively fixedly connected to the water pumping pipe and are respectively located on the outside of the water pumping pipe.

[0010] Among them, the auxiliary component includes a flow meter and a connecting pipe. There are multiple flow meters, and the multiple flow meters are respectively fixedly connected to the extension pipe and are respectively located on the outside of the extension pipe. There are two connecting pipes, and the two connecting pipes are respectively fixedly connected to the rectifier tube and are respectively located on the outside of the rectifier tube.

[0011] The utility model discloses a graded dewatering structure for excavating earthwork in a foundation pit, wherein the soil base is sequentially divided into an upper soil layer, a shallow water layer, an impermeable layer and a deep water layer. Before excavating earthwork, the position of each water pumping pipe is first determined. After the determination is completed, a deep water well and a shallow water well are dug in the middle of the soil base. During installation, the installation frames are respectively placed into the deep water well and the shallow water well, and then the installation plate is fixed to the support rod to facilitate the fixation of the installation frame. The filter plate provides a filtering effect for the water pumping pipe to prevent large pieces of soil from entering the water pumping pipe and causing the water pumping pipe to be blocked. This solves the problem that the graded dewatering structure for excavating earthwork in a deep foundation pit, when in use, filters the water pumping pipe through a coarse sand layer, which easily causes the water pumping pipe to be blocked after long-term use, resulting in poor graded dewatering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0013] Figure 1 It is a schematic diagram of the overall structure of the foundation pit excavation graded dewatering structure of the first embodiment of the present utility model.

[0014] Figure 2 It is a structural schematic diagram of the sealing assembly of the first embodiment of the present utility model.

[0015] Figure 3 It is a structural schematic diagram of the connection assembly of the first embodiment of the present utility model.

[0016] Figure 4 It is a structural schematic diagram of the fixing assembly of the first embodiment of the present utility model.

[0017] In the figure: 101-soil base, 102-mounting plate, 103-support rod, 104-mounting frame, 105-filter plate, 106-water pumping pipe, 107-extension pipe, 108-rectifier pipe, 109-fixing spring, 110-fixing seat, 111-control block, 112-flow meter, 113-connecting pipe. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0019] The first embodiment of this application is:

[0020] See also Figures 1 to 4 ,in, Figure 1This is a schematic diagram of the overall structure of the foundation pit excavation graded dewatering structure of the first embodiment of the utility model. Figure 2 This is a schematic structural diagram of the sealing assembly of the first embodiment of the present invention. Figure 3 This is a schematic structural diagram of the connection assembly of the first embodiment of the present utility model. Figure 4 It is a structural schematic diagram of the fixing component of the first embodiment of the present invention. The present invention provides a foundation pit excavation graded dewatering structure, including a soil base 101, a sealing component, a connecting component, a fixing component and an auxiliary component. The sealing component includes a mounting plate 102, a support rod 103, a mounting frame 104 and a filter plate 105. The connecting component includes a pumping pipe 106, an extension pipe 107 and a rectifier pipe 108. The fixing component includes a fixing spring 109, a fixing seat 110 and a control block 111, and the auxiliary component includes a flow meter 112 and a connecting pipe 113. The above-mentioned scheme solves the problem that when the deep foundation pit excavation graded dewatering structure is in use, the pumping pipe is filtered through the coarse sand layer, and the pumping pipe is easily blocked when used for a long time, resulting in poor graded dewatering effect. It can be understood that the above-mentioned scheme can be used in scenarios to avoid blockage of the soil base pumping pipe, and can also be used to solve the problem of soil base graded dewatering.

[0021] According to this specific embodiment, the number of the mounting plates 102 is two, and the two mounting plates 102 are detachably connected to the soil foundation 101 and are respectively located at the top of the soil foundation 101. The number of the support rods 103 is multiple, and the multiple support rods 103 are detachably connected to the mounting plates 102 and are respectively located at the bottom of the mounting plates 102. The number of the mounting frames 104 is multiple, and the multiple mounting frames 104 are respectively fixedly connected to the support rods 103 and are respectively located inside the soil foundation 101. The number of the filter plates 105 is multiple, and the multiple filter plates 105 are respectively fixedly connected to the mounting frames 104 and are respectively located at the bottom of the mounting frames 104. The connecting assembly and the fixing assembly are respectively connected to the installation frame 104, and the auxiliary assembly is connected to the connecting assembly. The soil base 101 is divided into an upper soil layer, a shallow water layer, an impermeable layer and a deep water layer in sequence. Before excavating the earth, the position of each of the pumping pipes 106 is first determined. After the determination is completed, a deep water well and a shallow water well are dug in the middle of the soil base 101. During installation, the installation frame 104 is placed into the deep water well and the shallow water well respectively, and then the installation plate 102 is fixed to the support rod 103 to facilitate the fixation of the installation frame 104. The filter plate 105 provides a filtering effect for the pumping pipe 106 to prevent large pieces of soil from entering the pumping pipe 106 and causing the pumping pipe 106 to be blocked.

[0022] Among them, the number of the water pumping pipes 106 is multiple, and the multiple water pumping pipes 106 are respectively detachably connected to the installation frame 104 and are respectively located inside the installation frame 104; the number of the extension pipes 107 is multiple, and the multiple extension pipes 107 are respectively fixedly connected to the water pumping pipes 106 and are respectively located on the top of the water pumping pipes 106; the number of the rectifying pipes 108 is two, and the two rectifying pipes 108 are respectively fixedly connected to the extension pipes 107 and are respectively located on the outside of the mounting plate 102; the water pumping pipe 106 is used to pump water from deep water wells and shallow water wells respectively, and the extension pipe 107 provides protection and support for the water pumping pipe 106; the rectifying pipe 108 is used to connect the multiple water pumping pipes 106 to facilitate the common pumping of water from the water pumping pipes 106. When one of the water pumping pipes 106 is blocked, the other water pumping pipes 106 can still continue to work.

[0023] Secondly, there are multiple fixing springs 109, and the multiple fixing springs 109 are respectively fixedly connected to the installation frame 104 and are respectively located inside the installation frame 104. There are multiple fixing seats 110, and the multiple fixing seats 110 are respectively fixedly connected to the fixing springs 109 and are respectively located on the outside of the water suction pipe 106. The fixing springs 109 provide support for the fixing seats 110, and the fixing seats 110 provide limiting function for the control block 111.

[0024] Again, the number of the control blocks 111 is multiple, and the multiple control blocks 111 are respectively fixedly connected to the water pumping pipe 106 and are respectively located on the outside of the water pumping pipe 106. When installing the water pumping pipe 106, the water pumping pipe 106 is inserted into the installation frame 104, and the control block 111 is inserted into the installation frame 104 at the same time. At this time, the control block 111 cooperates with the installation frame 104 to prevent the water pumping pipe 106 from slipping out of the installation frame 104. When the water suction pipe 106 is taken out, continue to press the water suction pipe 106 downward, press the control block 111 to the bottom of the fixing seat 110, and then lift the water suction pipe 106 upward. At this time, the fixing seat 110 provides a sliding effect for the control block 111. The fixing seat 110 is located between the control block 111 and the installation frame 104, releasing the limit of the installation frame 104 on the control block 111, making it easier to remove the water suction pipe 106 from the installation frame 104.

[0025] Finally, there are multiple flow meters 112, and the multiple flow meters 112 are fixedly connected to the extension pipe 107 and are respectively located on the outside of the extension pipe 107. There are two connecting pipes 113, and the two connecting pipes 113 are fixedly connected to the rectifier pipe 108 and are respectively located on the outside of the rectifier pipe 108. The flow meter 112 is used to detect the flow of each extension pipe 107. When the flow is small, it is convenient to inspect and repair the corresponding extension pipe 107 and the pumping pipe 106. The connecting pipe 113 is used to connect the rectifier pipe 108 to an external water pump.

[0026] Using the foundation pit earth excavation graded dewatering structure of this embodiment, the soil base 101 is divided into an upper soil layer, a shallow water layer, an impermeable layer and a deep water layer in sequence. Before excavating the earth, the position of each of the pumping pipes 106 is first determined. After the determination is completed, a deep water well and a shallow water well are dug in the middle of the soil base 101. During installation, the installation frame 104 is placed into the deep water well and the shallow water well respectively, and then the installation plate 102 is fixed to the support rod 103 to facilitate the fixation of the installation frame 104. The filter plate 105 provides a filtering effect for the pumping pipe 106 to prevent large pieces of soil from entering the pumping pipe 106 and causing the pumping pipe 106 to be blocked, thereby solving the problem that the deep foundation pit earth excavation graded dewatering structure is used, in which the pumping pipe is filtered through a coarse sand layer, which is easy to cause the pumping pipe to be blocked after long-term use, resulting in poor graded dewatering effect.

[0027] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. A foundation pit excavation graded dewatering structure, comprising a soil foundation, characterized in that: It also includes sealing components, connecting components, fixing components and auxiliary components; The sealing assembly includes a mounting plate, a support rod, a mounting frame and a filter plate. There are two mounting plates, and the two mounting plates are respectively detachably connected to the soil foundation and are respectively located at the top of the soil foundation. There are multiple support rods, and multiple support rods are respectively detachably connected to the mounting plate and are respectively located at the bottom of the mounting plate. There are multiple mounting frames, and multiple mounting frames are respectively fixedly connected to the support rods and are respectively located inside the soil foundation. There are multiple filter plates, and multiple filter plates are respectively fixedly connected to the mounting frame and are respectively located at the bottom of the mounting frame. The connecting assembly and the fixing assembly are respectively connected to the mounting frame, and the auxiliary assembly is connected to the connecting assembly.

2. The foundation pit excavation graded dewatering structure according to claim 1, characterized in that: The connecting assembly includes a water suction pipe, an extension pipe and a rectifier pipe. There are multiple water suction pipes, and the multiple water suction pipes are detachably connected to the installation frame and are respectively located inside the installation frame. There are multiple extension pipes, and the multiple extension pipes are respectively fixedly connected to the water suction pipe and are respectively located on the top of the water suction pipe. There are two rectifier pipes, and the two rectifier pipes are respectively fixedly connected to the extension pipe and are respectively located on the outside of the mounting plate.

3. The foundation pit excavation graded dewatering structure according to claim 2, characterized in that: The fixing assembly includes a fixing spring and a fixing seat. There are multiple fixing springs, and the multiple fixing springs are respectively fixedly connected to the installation frame and are respectively located inside the installation frame. There are multiple fixing seats, and the multiple fixing seats are respectively fixedly connected to the fixing springs and are respectively located on the outside of the water suction pipe.

4. The foundation pit excavation graded dewatering structure according to claim 3, characterized in that: The fixing assembly further includes a control block, and the number of the control blocks is multiple. The multiple control blocks are respectively fixedly connected to the water pumping pipe and are respectively located on the outside of the water pumping pipe.

5. The foundation pit excavation graded dewatering structure according to claim 2, characterized in that: The auxiliary component includes a flow meter and a connecting pipe. There are multiple flow meters, and the multiple flow meters are respectively fixedly connected to the extension pipe and respectively located on the outside of the extension pipe. There are two connecting pipes, and the two connecting pipes are respectively fixedly connected to the rectifier tube and respectively located on the outside of the rectifier tube.

Images