Foundation pit bottom drainage structure

Abstract

The utility model discloses a kind of foundation pit bottom drainage structures, it is related to foundation pit drainage technical field, with the depth of water guide groove can be adjusted, improve the advantage of drainage efficiency, its technical scheme main point is: the groove bottom of water guide groove one is vertically equipped with several interval distribution's plugboard, each the plugboard includes two mutually adhering distribution's heightening plate, each the plugboard has several from below to above sequentially array, and the two heightening plate of mutual contact between upper and lower is connected by plug-in piece plug-in connection, and the two heightening plate of adjacent and opposite between left and right is connected by connecting plate, the connecting plate on a heightening plate is located the upper of the plug-in piece of this heightening plate, and the flow hole for water flow to flow through heightening plate is all set on the heightening plate of same height.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit drainage technology, specifically a foundation pit bottom drainage structure. Background Technology

[0002] During the excavation of the foundation pit, groundwater and rainwater will continuously seep into the bottom of the pit, forming water accumulation inside the pit. Drainage measures must be taken to avoid phenomena such as quicksand, piping, and slope instability.

[0003] Chinese patent application CN202223523017.4 discloses a construction site rainwater drainage structure, including a construction pit sidewall and a construction pit bottom. The sidewall and bottom of the construction pit together form the construction pit structure. A first water guide channel is formed on the top surface of the pit bottom, and a second water guide channel is formed at the edge of the pit bottom. The end of the first water guide channel is connected to the second water guide channel. The advantage of this invention is that, through the coordinated arrangement of the first water guide channel, the second water guide channel, and the collection well, the accumulated water in the pit can be guided. The accumulated water enters the collection well after passing through the first and second water guide channels. The collection well is located at the lowest position, thus this structure is conducive to the complete drainage of accumulated water in the pit. Afterwards, a water pump draws water from the collection well and discharges the accumulated water into a sedimentation tank, thereby effectively and completely draining the pit.

[0004] However, the depths of the existing first and second water diversion channels are fixed. As the excavation depth of the foundation pit increases, the depths of the first and second water diversion channels gradually decrease. Since the depths of the first and second water diversion channels cannot be adjusted, it is necessary to continue excavating the first and second water diversion channels, resulting in a decrease in drainage efficiency.

[0005] Therefore, the applicant has developed a new technical solution in the actual production process to solve the above-mentioned technical problems. Utility Model Content

[0006] In view of the above-mentioned technical deficiencies, the purpose of this utility model is to provide a drainage structure for the bottom of a foundation pit, which has the advantage of allowing the depth of the water guide channel to be adjusted and improving drainage efficiency.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] This utility model provides a drainage structure for the bottom of a foundation pit, including a water guide channel 1 set at the edge of the bottom of the foundation pit and a water collection well set at the bottom of the water guide channel 1. The water collection well is provided with a drainage pipe. The end of the drainage pipe away from the water collection well extends to the top of the foundation pit and is connected to a sedimentation tank. A water pump is provided on the drainage pipe to pump water from the water collection well into the sedimentation tank. Several spaced insert plates are vertically arranged at the bottom of the water guide channel 1. Each insert plate includes two mutually attached raising plates. Several insert plates are arranged in a row from bottom to top. Two raising plates that are in contact with each other are connected by insert connectors. Two adjacent and opposite raising plates are connected by connecting plates. The connecting plate on one raising plate is located above the insert connector of the raising plate. Each raising plate at the same height is provided with a flow hole for water to flow through the raising plate.

[0009] By adopting the above technical solution, the first water guide channel is set at the edge of the bottom of the foundation pit, which facilitates the diversion of water from the bottom of the foundation pit into the first water guide channel. The water then flows into the collection well and is pumped out by the water pump on the drainage pipe to the sedimentation tank. At this time, the first water guide channel at the bottom of the foundation pit is dug with multiple layers of insert plates inserted. The multiple spaced insert plates at the bottom of the first water guide channel are the bottom layer. There are several insert plates arranged in a row from bottom to top, indicating that there are several layers of insert plates from bottom to top. The height of the connecting plate on the top layer of insert plates is equivalent to the depth of the first water guide channel at this time. As the bottom of the foundation pit is dug further, the top layer of insert plates is removed, exposing the connecting plate of the next layer. At this time, the height of the connecting plate of the next layer of insert plates is equivalent to the depth of the first water guide channel at this time, so that the depth of the first water guide channel gradually decreases until the bottom layer of insert plates is pulled out. Only then does it need to be dug again for the first water guide channel. During the above process, there is a period of time when the first water guide channel does not need to be dug again. Therefore, the drainage effect is high, and drainage can still be carried out as the depth of the first water guide channel gradually decreases.

[0010] Preferably, the water guide channel is distributed along the perimeter of the pit bottom, i.e., in a rectangular shape, and the water collection well is located at the corner of the water guide channel.

[0011] Preferably, several blocks are provided on the raised plates on both sides of the water collection well, each block being located below the flow hole. A perforated plate is placed on the block on the highest raised plate on both sides of the water collection well, the perforated plate covering the space between the raised plates on both sides of the water collection well, and the perforated plate having an insertion pipe for the water supply and drainage pipe.

[0012] Preferably, the length direction of each flow hole is distributed along the width direction of the riser plate, and the lower end of the flow hole extends to the top of the connecting plate. The connecting plates located on both sides of the water collection well are inclined plates, that is, the lower position of the connecting plates is close to the water collection well.

[0013] Preferably, both sides of each of the heightening plates and connecting plates abut against the two side walls of the water guide channel. The connector includes an extension plate disposed on the opposite side of the two upper and lower contacting heightening plates. The two upper and lower extension plates are staggered and closely fitted to each other.

[0014] Preferably, a connecting plate and the heightening plates on both sides of the connecting plate form a splicing unit, and the two ends of the two heightening plates located on both sides of the connecting plate are connected by baffles.

[0015] Preferably, the two vertically distributed extension plates that fit together are each provided with a positioning block extending into the other.

[0016] The beneficial effects of this utility model are as follows: The first water guide channel is located at the edge of the foundation pit bottom, facilitating the diversion of water from the pit bottom into the first water guide channel. The water then flows into the collection well and is pumped out by the water pump on the drainage pipe to the sedimentation tank. At this point, the first water guide channel at the bottom of the foundation pit is constructed by inserting multiple layers of insert plates. The bottom layer consists of several spaced insert plates at intervals. Each insert plate is arranged in a series from bottom to top, indicating that there are several layers of insert plates. The height of the connecting plate on the top layer of insert plates is equivalent to the current depth of the first water guide channel. As the foundation pit bottom continues to be excavated, the top layer of insert plates is removed, exposing the connecting plate of the next layer. The height of the connecting plate of the next layer is equivalent to the current depth of the first water guide channel, causing the depth of the first water guide channel to gradually decrease until the bottom layer of insert plates is removed. Only then is it necessary to re-excavate the first water guide channel. During this process, there is a period during which the first water guide channel does not need to be re-excavated. Therefore, the drainage effect is high, and drainage can still occur even as the depth of the first water guide channel gradually decreases. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0019] Figure 2 This is a schematic diagram illustrating the structure after each insert plate is installed into the water guide channel in this embodiment;

[0020] Figure 3 for Figure 2 Enlarged structural diagram of section A in the middle;

[0021] Figure 4 for Figure 2Enlarged structural diagram of section B in the middle;

[0022] Figure 5 This is a structural diagram illustrating a splicing unit in this embodiment;

[0023] Figure 6 This is a structural diagram illustrating the height of the connecting plate of a splicing unit in this embodiment.

[0024] Explanation of reference numerals in the attached figures:

[0025] In the diagram: 1. Water guide channel one; 11. Water collection well; 12. Drainage pipe; 121. Sedimentation tank; 122. Water pump; 13. Elevation plate; 131. Connecting plate; 132. Flow hole; 14. Baffle; 141. Mesh plate; 142. Inserted pipe; 15. Extension plate; 16. Baffle; 17. Positioning block; 18. Water guide channel two; 2. Foundation pit. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] A drainage structure for the bottom of a foundation pit, such as Figure 1 and Figure 2 and Figure 3 It includes a water guide channel 1 set at the edge of the bottom of the foundation pit 2, a water collection well 11 set at the bottom of the water guide channel 1, a drain pipe 12 in the water collection well 11, one end of the drain pipe 12 away from the water collection well 11 extends to the top of the foundation pit 2 and is connected to a sedimentation tank 121, the sedimentation tank 121 is located on one side of the foundation pit 2 on the ground, and a water pump 122 is provided on the drain pipe 12 to pump water from the water collection well 11 into the sedimentation tank 121;

[0028] like Figure 2 and Figure 3 and Figure 4To facilitate adjustment of the depth of the water guide channel 1 during continuous excavation at the bottom of foundation pit 2, several spaced insert plates are vertically arranged at the bottom of the water guide channel 1. Each insert plate includes two mutually fitted elevating plates 13. Several insert plates are arranged sequentially from bottom to top. The two elevating plates 13 that are in contact with each other vertically are connected by insert connectors, and the two adjacent and opposite elevating plates 13 are connected by connecting plates 131. Therefore, one insert plate consists of two mutually fitted elevating plates 13. The raised plate 13 is designed to facilitate the installation of the connecting plate 131. The connecting plate 131 on each raised plate 13 is located above the connector of that raised plate 13. Raised plates 13 at the same height are all provided with flow holes 132 for water to flow through them. The flow holes 132 are located above the connecting plate 131. At this point, the connecting plate 131 at the highest position of the raised plate 13 represents the depth of the water guide channel 1. The flow holes 132 facilitate water flow along the circumference of the water guide channel 1. The bottom of each raised plate 13 that contacts the bottom of the water guide channel 1 is provided with several insert rods that are inserted into the bottom of the water guide channel 1. The bottom of each insert rod is pointed.

[0029] like Figure 2 and Figure 3 and Figure 4 Water guide channel 1 is located at the edge of the bottom of pit 2 to facilitate the diversion of water from the bottom of pit 2 into water guide channel 1, which then flows into collection well 11 and is pumped out by water pump 122 on drainage pipe 12 to sedimentation tank 121. At this time, water guide channel 1 at the bottom of pit 2 is dug with multiple layers of insert plates. The multiple spaced insert plates at the bottom of water guide channel 1 form the bottom layer. Each insert plate is arranged in a series from bottom to top, indicating that there are several layers of insert plates from bottom to top. The height of the connecting plate 131 on the top layer of insert plates is equivalent to the height of the water guide channel at this time. As the excavation of the pit 2 continues, the depth of channel 1 is adjusted by removing the top layer of insert plates, exposing the next layer of connecting plates 131. At this point, the height of the next layer of connecting plates 131 is equivalent to the current depth of channel 1, causing the depth of channel 1 to gradually decrease until the bottom layer of insert plates is removed. Only then is it necessary to re-excavate channel 1. During this process, there is a period of time when it is not necessary to re-excavate channel 1, resulting in high drainage efficiency. Furthermore, drainage can still occur even as the depth of channel 1 gradually decreases.

[0030] like Figure 1 and Figure 2 The water guide channel 1 is distributed along the perimeter of the bottom of the foundation pit 2 in a rectangular pattern. The water collection wells 11 are located at the corners of the water guide channel 1. At this time, there is only one raised plate 13 on each side of the water collection well 11. There are four corners of the water guide channel 1. The water collection wells 11 can be located at two of the corners. In the other corners where water collection wells 11 are not located, adjacent raised plates 13 are connected by corner plates.

[0031] like Figure 2 and Figure 3 and Figure 4 Several baffles 14 are provided on the raised plates 13 on both sides of the water collection well 11. Each baffle 14 is located below the flow hole 132. A mesh plate 141 is placed on the baffle 14 on the highest raised plate 13 on both sides of the water collection well 11. The mesh plate 141 covers the space between the raised plates 13 on both sides of the water collection well 11. The mesh plate 141 has a tube 142 for inserting the drain pipe 12. One end of the drain pipe 12 extends into the water collection well 11. The function of the mesh plate 141 is to restrict the position of the drain pipe 12 on the one hand, and to facilitate the flow of water from the raised plates 13 at various heights into the water collection well 11 on the other hand. The drain pipe 12 can be pulled out and extended into the tube 142.

[0032] like Figure 5 and Figure 6 The length of each flow hole 132 is distributed along the width of the riser plate 13, and the lower end of the flow hole 132 extends above the connecting plate 131 to facilitate the flow of water above the connecting plate 131. The connecting plates 131 located on both sides of the water collection well 11 are inclined plates, that is, the lower position of the connecting plate 131 is close to the water collection well 11, and the higher position is flush with the height of the adjacent connecting plate 131. The inclined connecting plates 131 facilitate water permeation through the perforated plate 141 and reduce water outflow from the flow holes 132 on the riser plate 13 around the water collection well 11. The depth of the water collection well 11 is greater than the height of the lowest insert plate.

[0033] like Figure 1 and Figure 4 and Figure 5 Both sides of each of the riser plates 13 and the connecting plate 131 abut against the two side walls of the water guide channel 1. The connector includes an extension plate 15 set on the opposite side of the two upper and lower riser plates 13 that are in contact with each other. The two upper and lower extension plates 15 are staggered and closely attached to each other. The two upper and lower extension plates 15 that are closely attached to each other are provided with positioning blocks 17 extending into each other. At this time, the positioning blocks 17 and the extension plates 15 restrict the movement of the riser plates 13 during installation, so as to facilitate the water in the water guide channel 1 to be guided by each layer of riser plates 13.

[0034] like Figure 5 and Figure 6 A connecting plate 131 and the two extension plates 13 on both sides of the connecting plate 131 form a splicing unit. The two ends of the two extension plates 13 on both sides of the connecting plate 131 are connected by baffles 16. At this time, the height of the baffles 16 is the height of the extension plate 13. The height position of the connecting plate 131 in the extension plate 13 is not limited. It can be located above, below, or in the middle of the extension plate 13.

[0035] like Figure 1 In addition, in order to facilitate the increase of drainage efficiency at the bottom of the foundation pit 2, several water guide channels 18 connected to the water guide channel 1 are provided at the bottom of the foundation pit 2. The depth of the water guide channel 18 is less than the depth of the water guide channel 1, so that the water guide channel 18 can drain water into the water guide channel 1. Therefore, the height of each layer of insert plates installed in the water guide channel 18 is lower than the height of each layer of insert plates installed in the water guide channel 1.

[0036] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A drainage structure for the bottom of a foundation pit, comprising a water guide channel (1) located at the edge of the bottom of the foundation pit (2), and a water collection well (11) located at the bottom of the water guide channel (1), wherein a drain pipe (12) is provided in the water collection well (11), and one end of the drain pipe (12) away from the water collection well (11) extends to the top of the foundation pit (2) and is connected to a sedimentation tank (121), wherein a pump (122) is provided on the drain pipe (12) to pump water from the water collection well (11) into the sedimentation tank (121), characterized in that, The bottom of the water guide channel (1) is vertically provided with several spaced insert plates. Each insert plate includes two mutually attached heightening plates (13). Several insert plates are arranged in sequence from bottom to top. The two heightening plates (13) that are in contact with each other are connected by inserting connectors. The two adjacent and opposite heightening plates (13) are connected by connecting plates (131). The connecting plate (131) on a heightening plate (13) is located above the insert of the heightening plate (13). The heightening plates (13) at the same height are provided with flow holes (132) for water to flow through the heightening plates (13).

2. The foundation pit bottom drainage structure as described in claim 1, characterized in that, The water guide channel (1) is distributed around the bottom of the pit (2) in a rectangular shape, and the water collection well (11) is located at the corner of the water guide channel (1).

3. The foundation pit bottom drainage structure as described in claim 2, characterized in that, Several baffles (14) are provided on the raising plates (13) on both sides of the water collection well (11). Each baffle (14) is located below the flow hole (132). A mesh plate (141) is placed on the baffle (14) on the highest raising plate (13) on both sides of the water collection well (11). The mesh plate (141) covers the space between the raising plates (13) on both sides of the water collection well (11). The mesh plate (141) is provided with a pipe (142) for inserting the water supply and drainage pipe (12).

4. The foundation pit bottom drainage structure as described in claim 3, characterized in that, The length direction of each flow hole (132) is distributed along the width direction of the heightening plate (13), and the lower end of the flow hole (132) extends to the top of the connecting plate (131). The connecting plate (131) located on both sides of the water collection well (11) is an inclined plate, that is, the lower position of the connecting plate (131) is close to the water collection well (11).

5. The pit bottom drainage structure as described in claim 1, characterized in that, Both sides of each of the heightening plates (13) and connecting plates (131) are in contact with the two side walls of the water guide channel (1). The connector includes an extension plate (15) disposed on the opposite side of the two heightening plates (13) that are in contact with each other. The two extension plates (15) are staggered and closely fitted to each other.

6. The foundation pit bottom drainage structure as described in claim 5, characterized in that, A connecting plate (131) and the heightening plates (13) on both sides of the connecting plate (131) form a splicing unit. The two ends of the two heightening plates (13) located on both sides of the connecting plate (131) are connected by baffles (16).

7. A pit bottom drainage structure as described in claim 5, characterized in that, The two vertically distributed extension plates (15) that fit together are each provided with a positioning block (17) that extends into the other.

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