A method for dewatering a sump pit

Abstract

This application relates to a method for dewatering a sump, belonging to the technical field of building construction. The method includes the following steps: S1, excavating a trench at the bottom of the sump and placing a water pump inside the trench; S2, gradually lowering the water level in the sump by pumping water, adjusting the size of an adjustable casing according to the size of the trench, and installing the adjustable casing in the trench to enclose the water pump; S3, pouring a foundation layer on the four walls and bottom of the sump; S4, after the above work is completed, removing the casing and taking out the water pump, pouring concrete into the trench to seal it, and completing the dewatering of the sump. This application improves construction quality.

Description

Technical Field

[0001] This application relates to the technical field of building construction, and in particular to a method for constructing a sump for dewatering. Background Technology

[0002] As people's lives develop at an increasingly rapid pace, construction projects are becoming more and more common. Among these projects, foundation pit construction is a frequent occurrence. This involves excavating the foundation pit, which may encounter groundwater, leading to the issue of foundation pit dewatering. This often involves the dewatering of sump pits, where the base of some sump pits is deeper than the groundwater level.

[0003] Typically, dewatering of sump pits is done using dewatering wells. These wells are located at the bottom of the sump pit and have a small diameter. Water is pumped out of the wells using pumps and pipes.

[0004] Regarding the aforementioned technologies, the inventors believe that after the dewatering is completed and the water pump is removed from the dewatering well, the groundwater will rise again, causing the sump to re-form a shallow water pit. This affects the pouring of the foundation concrete and the subsequent construction of the waterproof membrane. If not dealt with in time, the repeated rise and fall of groundwater will have a significant impact on the bottom of the sump. In severe cases, the soil at the bottom of the sump may lose its ability to resist water pressure, leading to the collapse of the upper sump. This would compromise the construction quality of the foundation and waterproofing, resulting in a low-quality construction. Summary of the Invention

[0005] In order to improve the construction quality, this application provides a method for dewatering a sump pit.

[0006] The method for dewatering a sump pit provided in this application adopts the following technical solution:

[0007] A method for dewatering a sump pit includes the following steps:

[0008] S1. Excavate a trench at the bottom of the sump and place the water pump inside the trench;

[0009] S2. Gradually lower the water level in the sump by pumping water with a water pump. Adjust the size of the adjustable casing according to the size of the trench. Install the adjustable casing in the trench to cover the water pump.

[0010] S3. Construct a foundation layer for the four walls and bottom of the sump pit;

[0011] S4. After the above work is completed, remove the casing and take out the water pump, pour concrete into the trench to seal the trench, and complete the dewatering work of the sump pit.

[0012] By adopting the above technical solution, after the water collection pit is dewatered, the pouring of the bedding layer and the adjustable casing can prevent the groundwater from rising and seeping out. Compared with not treating the water after dewatering, this avoids the rise and seepage of groundwater, thus not affecting the subsequent construction of the waterproof membrane and achieving the effect of improving the construction quality.

[0013] Optionally, in step S2, after the water level is lower than the elevation of the sump base, the area around the sump is plastered with concrete.

[0014] By adopting the above technical solution, the area around the sump is plastered with concrete, which initially blocks the rise and seepage of groundwater, facilitating the subsequent construction of waterproof membrane and improving the construction quality.

[0015] Optionally, in step S2, the height of the protective casing can be adjusted to be higher than the height of the bottom bedding layer of the sump.

[0016] By adopting the above technical solution, the height of the casing can be adjusted to be higher than the height of the sump bedding layer. The casing can be adjusted to block groundwater and prevent groundwater from seeping out from the trench sidewall, thereby improving the construction quality and achieving the effect of improving construction quality.

[0017] Optionally, in step S3, after the four walls and bottom bedding layer of the sump are poured and have reached initial setting, a waterproof coating is applied along the four walls and bottom bedding layer of the sump.

[0018] By adopting the above technical solution, the water-proof coating further blocks groundwater and prevents it from seeping out, thus facilitating the subsequent construction of waterproof membranes and improving the quality of construction.

[0019] Optionally, in step S4, the grade of the concrete poured in the trench is higher than that of the foundation concrete.

[0020] By adopting the above technical solution, the trench is poured after the foundation layer is poured. After the foundation layer is poured, groundwater will concentrate and seep out from the side wall of the trench. Therefore, using higher grade concrete when pouring the trench can better ensure the pouring quality, which is beneficial to the subsequent construction of waterproof membrane and achieves the effect of improving construction quality.

[0021] An adjustable sleeve includes a main board, a sub-board, and side plates. The main board and the sub-board are parallel to the bottom of the groove. One end of the sub-board is embedded in the main board. The sub-board and the main board are slidably connected. Two side plates are provided. The side plates are fixed at the two ends of the main board and the sub-board that are far apart from each other. Both side plates are perpendicular to the bottom of the groove and are arranged opposite each other.

[0022] By adopting the above technical solution, when an adjustable sleeve needs to be installed, the main plate and the secondary plate are slid according to the width of the groove to adjust the distance between the two side plates until the distance between the two side plates corresponds to the width of the groove. The adjustable sleeve is then installed in the groove, achieving the effect of a wider range of applications for the adjustable sleeve.

[0023] Optionally, an electric push rod is provided between the two side plates, with the power end of the electric push rod fixedly connected to one of the side plates and one end of the piston rod of the electric push rod fixedly connected to the other side plate.

[0024] By adopting the above technical solution, when it is necessary to slide the main board and the sub-board, the electric push rod is activated, the piston rod of the electric push rod slides, thereby pushing the side plate, so that the two side plates move closer or further apart, thereby sliding the main board and the sub-board, achieving the effect of sliding the main board and the sub-board.

[0025] Optionally, a fixing block is fixed to the side plate fixed to the motherboard, and a positioning block is slidably disposed inside the fixing block in a horizontal direction. A starting block is slidably disposed on the fixing block in a vertical direction. When the adjustable sleeve is installed in the groove, the starting block passes through the fixing block, one end of the positioning block passes through the side plate and is embedded in the side wall of the groove, and the other end of the positioning block is in close contact with the starting block.

[0026] By adopting the above technical solution, when installing the adjustable casing, the starting block is inserted into the fixed block and passes through the fixed block. The insertion of the starting block pushes the positioning block out of the fixed block, so that the positioning block slides out and is embedded in the side wall of the groove, making the connection between the adjustable casing and the groove more secure, thereby increasing the stability of the connection between the adjustable casing and the groove.

[0027] Optionally, the electric push rod piston rod is provided with multiple fixing slots. When the adjustable protective sleeve is installed in the slot, the end of the starting block that passes through the fixing block is embedded in any one of the fixing slots.

[0028] By adopting the above technical solution, when the adjustable casing is installed in the groove, the starting block passes through the fixing block and pushes out the positioning block. The positioning block is embedded in the groove to further fix the groove. At the same time, the starting block is embedded in the fixing groove, which fixes the electric push rod, thereby making the adjustable casing more stable and achieving the effect of improving the stability of the adjustable casing.

[0029] Optionally, a spring is provided inside the fixing block. One end of the spring is fixedly connected to the fixing block, and the other end of the spring is fixedly connected to the positioning block. When the starting block passes through the fixing block and the starting block and the positioning block are in close contact, the spring is in a stretched state. When the spring is in a natural state, the positioning block is completely placed in the fixing block.

[0030] By adopting the above technical solution, when it is necessary to remove the adjustable casing, the sliding start block is slid out, and under the action of the spring, the positioning block is springed back into the fixed block, avoiding the operator from sliding the positioning block, thereby removing the adjustable casing and achieving a convenient and quick effect.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. The installation of a subbase and waterproofing features improves construction quality;

[0033] 2. The design of the main board, sub-board, and side plates allows for a wider range of applications with the adjustable protective sleeve;

[0034] 3. The electric actuator is designed to slide the main board and the sub-board.

[0035] 4. The setting of fixing blocks, positioning blocks, and starting blocks increases the stability of the connection between the adjustable casing and the groove;

[0036] 5. The setting of the fixing groove improves the stability of the adjustable casing;

[0037] 6. The spring design achieves a convenient and quick result. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0039] Figure 2 This is a schematic diagram showing the structure of the adjustable protective sleeve;

[0040] Figure 3 This is a schematic diagram showing the structure of a spring.

[0041] In the diagram, 1. Groove; 2. Adjustable sleeve; 21. Main board; 22. Sub-board; 23. Side plate; 24. Electric push rod; 3. Pad layer; 4. Leak-proof; 5. Fixing block; 6. Positioning block; 7. Starting block; 8. Fixing groove; 9. Spring. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0043] This application discloses a method for dewatering a sump pit, including the following steps:

[0044] S1. Reference Figure 1 A trench 1 is dug at the bottom of the sump, and the water pump is placed inside the trench 1.

[0045] S2, Reference Figure 1 and Figure 2The water level in the sump is gradually lowered by pumping water. Once the water level is lower than the elevation of the sump base, the sump is plastered with concrete around it. The size of the adjustable casing 2 is adjusted according to the size of the trench 1. The adjustable casing 2 is installed in the trench 1 to cover the water pump. The height of the adjustable casing 2 is higher than the height of the bottom bedding layer 3 of the sump.

[0046] Reference Figure 1 and Figure 2 An adjustable sleeve 2 includes a main board 21, a secondary board 22, and a side board 23. The main board 21 and the secondary board 22 are used to adjust the size of the groove 1, and the side board 23 is the main body of the groove 1.

[0047] Reference Figure 1 and Figure 2 The main board 21 and the bottom of the groove 1 are arranged parallel to each other, and the sub-board 22 and the bottom of the groove 1 are also arranged parallel to each other. The length direction of the main board 21 and the sub-board 22 is the same as the length direction of the groove 1. One end of the sub-board 22 is embedded in the width direction of the main board 21. The sub-board 22 slides in the main board 21, and the sliding direction is set along the width direction of the groove 1. There are two side plates 23. The length direction of the two side plates 23 is the same as the length direction of the groove 1. One side plate 23 is fixed to the end of the main board 21 away from the sub-board 22, and the other side plate 23 is fixed to the end of the sub-board 22 away from the main board 21. The two side plates 23 are perpendicular to the main board 21 and the sub-board 22, and the two side plates 23 are arranged opposite each other.

[0048] An electric push rod 24 is provided between the two side plates 23. The length direction of the electric push rod 24 is the same as the width direction of the groove 1. The power end of the electric push rod 24 is fixedly connected to one of the side plates 23, and one end of the piston rod of the electric push rod 24 is fixedly connected to the other side plate 23. When it is necessary to adjust the size of the adjustable sleeve 2, the electric push rod 24 is activated, and the piston rod of the electric push rod 24 moves, thereby adjusting the overall length of the main plate 21 and the side plate 23. The two side plates 23 are thus brought closer or further apart, adjusting the size of the adjustable sleeve 2.

[0049] Reference Figure 1 , Figure 2 and Figure 3A fixing block 5 is fixed on the side plate 23 that is fixed to the main board 21. The fixing block 5 is fixed between the two side plates 23. The length direction of the fixing block 5 is the same as the width direction of the groove 1. A positioning block 6 is provided inside the fixing block 5. The length direction of the positioning block 6 is the same as the length direction of the fixing block 5. The positioning block 6 and the fixing block 5 are slidably connected. The sliding direction is set along the length direction of the fixing block 5. A spring 9 is provided inside the fixing block 5. The length direction of the spring 9 is the same as the length direction of the fixing block 5. One end of the spring 9 is fixedly connected to the end of the fixing block 5 away from the side plate 23. The other end of the spring 9 is fixedly connected to the end of the positioning block 6 placed in the fixing block 5. When the adjustable sleeve 2 is installed in the groove 1, the end of the positioning block 6 away from the spring 9 is embedded in the side wall of the groove 1. The end of the positioning block 6 away from the spring 9 is a pointed cone. At this time, the spring 9 is in a stretched state. When the spring 9 is in a natural state, the positioning block 6 is completely placed in the fixing block 5.

[0050] A starting block 7 is provided on the fixed block 5. The length direction of the starting block 7 is perpendicular to the bottom of the groove 1. The starting block 7 passes through the fixed block 5 and is slidably connected to the fixed block 5. The sliding direction is set in the vertical direction. The end of the starting block 7 near the bottom of the groove 1 is a pointed cone. When the adjustable sleeve 2 is installed in the groove 1, the starting block 7 passes through the fixed block 5, and the starting block 7 and the positioning block 6 are tightly abutted at one end of the fixed block 5.

[0051] The piston rod of the electric push rod 24 has multiple fixing slots 8. The length direction of the multiple fixing slots 8 is perpendicular to the length direction of the electric push rod 24. The multiple fixing slots 8 are equally spaced along the length direction of the electric push rod 24. When the starting block 7 passes through the fixing block 5 and the starting block 7 and the positioning block 6 are in close contact, one end of the pointed cone of the starting block 7 is embedded in any one of the positioning slots.

[0052] When the adjustable sleeve 2 needs to be installed in the groove 1, adjust the size of the groove 1 to the required size, place the groove 1 in the groove 1 position, insert the start rod, pass the start rod through the fixing block 5, and at the same time push out the positioning block 6. The pointed end of the positioning block 6 is embedded in the side wall of the groove 1, and the pointed end of the start rod is embedded in the fixing groove 8 of the piston rod of the electric push rod 24, so that the adjustable sleeve 2 is more stable. When the adjustable sleeve 2 needs to be removed, pull out the start rod, and the spring 9 pulls the positioning block 6 back into the fixing block 5, and the adjustable sleeve 2 can be removed.

[0053] S3. Reference Figure 1 The four walls and bottom of the sump are filled with a base layer 3. After the base layer 3 is poured and initially set, a waterproof coating 4 is applied along the four walls and bottom base layer 3.

[0054] S4, Reference Figure 1After the above work is completed, remove the casing and take out the water pump. Pour concrete with a higher grade than that of the subbase 3 into the trench 1 to seal the trench 1 and complete the dewatering work of the sump pit.

[0055] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A method for constructing a sump dewatering system, characterized in that: Includes the following steps: S1. Excavate a trench (1) at the bottom of the sump and place the water pump inside the trench (1); S2. The water level in the sump is gradually lowered by pumping water with a water pump. The size of the adjustable sleeve (2) is adjusted according to the size of the trench (1). The adjustable sleeve (2) is installed in the trench (1) to cover the water pump. S3. Pour the foundation layer (3) on the four walls and bottom of the sump. S4. After the above work is completed, pull out the protective casing and take out the water pump. Pour concrete into the trench (1) to seal the trench (1) and complete the dewatering work of the sump. An adjustable sleeve (2) is characterized in that it includes a main plate (21), a secondary plate (22) and a side plate (23). The main plate (21) and the secondary plate (22) are parallel to the bottom of the groove (1). One end of the secondary plate (22) is embedded in the main plate (21). The secondary plate (22) and the main plate (21) are slidably connected. Two side plates (23) are provided. The side plates (23) are fixed at the two ends of the main plate (21) and the secondary plate (22) that are far apart from each other. Both side plates (23) are perpendicular to the bottom of the groove (1) and are arranged opposite to each other. An electric push rod (24) is provided between the two side plates (23). The power end of the electric push rod (24) is fixedly connected to one of the side plates (23), and one end of the piston rod of the electric push rod (24) is fixedly connected to the other side plate (23). A fixing block (5) is fixed on the side plate (23) fixed to the main board (21). A positioning block (6) is slidably arranged inside the fixing block (5) with the sliding direction set in the horizontal direction. A starting block (7) is slidably arranged on the fixing block (5) with the sliding direction set in the vertical direction. When the adjustable sleeve (2) is installed in the groove (1), the starting block (7) passes through the fixing block (5), one end of the positioning block (6) passes through the side plate (23) and is embedded in the side wall of the groove (1), and the other end of the positioning block (6) is in close contact with the starting block (7). The piston rod of the electric push rod (24) has multiple fixed grooves (8). When the adjustable sleeve (2) is installed in the groove (1), the starter block (7) passes through one end of the fixed block (5) and is embedded in any fixed groove (8). The fixed block (5) is equipped with a spring (9). One end of the spring (9) is fixedly connected to the fixed block (5), and the other end of the spring (9) is fixedly connected to the positioning block (6). When the starting block (7) passes through the fixed block (5) and the starting block (7) and the positioning block (6) are in close contact, the spring (9) is in a stretched state. When the spring (9) is in a natural state, the positioning block (6) is completely placed in the fixed block (5).

2. The method for constructing a sump dewatering system according to claim 1, characterized in that: In step S2, after the water level is lower than the elevation of the sump base, the area around the sump is plastered with concrete.

3. The method for constructing a sump dewatering system according to claim 1, characterized in that: In step S2, the height of the adjustable casing (2) is higher than the height of the bottom pad (3) of the water collection pit.

4. The method for constructing a sump dewatering system according to claim 1, characterized in that: In step S3, after the four walls and bottom bedding layer (3) of the water collection pit are poured and reach initial setting, water-proof coating (4) is applied along the four walls and bottom bedding layer (3).

5. The method for constructing a sump dewatering system according to claim 1, characterized in that: In step S4, the grade of the concrete poured in the trench (1) is higher than that of the concrete in the cushion layer (3).

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