Stable structure for riverfront pumping station

Abstract

The utility model relates to the technical field of water conservancy and municipal works, disclose a kind of stable structure for river pump station, including pump station main body, pump station backwater side soil body geogrid reinforcement structure and a set of integrated in the drainage system between the pump station main body and backwater side soil body;The pump station backwater side soil body geogrid reinforcement structure is formed by backwater side soil body and geogrid combination processing reinforcement, and the geogrid is multilayer structure spaced apart up and down, is arranged in backwater side soil body by layered backfill compaction, forms the pump station backwater side soil body geogrid reinforcement.The utility model increases the drainage capacity of pump station backwater side soil body by setting a set of drainage system, reduces backwater side water pressure load, to solve the problem of the structural stability such as slippage, anti-floating, settlement of pump station.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy and municipal engineering technology, specifically to a stabilizing structure for a riverside pumping station, particularly a stabilizing structure for a riverside pumping station including a geogrid and a drainage system. Background Technology

[0002] Pumping stations are engineering facilities used to enhance the potential energy of water bodies. They are often built near rivers and are widely used in water conservancy projects, flood control and drainage, agricultural irrigation, urban water supply, and urban drainage. A pumping station typically consists of a pumping station, inlet and outlet pools, pump units, and corresponding electrical equipment. The stability of the pumping station structure directly affects its operational safety and service life.

[0003] Existing pumping stations, especially those built near rivers, are subjected to uneven stress on their main structure by water and soil pressure on the water-facing and back-facing sides. This often leads to problems with slippage stability, buoyancy stability, and settlement stability. 1. Slippage stability issues: Pump stations built near rivers have structures such as the bottom slab and retaining walls of the pump station and inlet / outlet pools that are subjected to less passive water and soil pressure loads on the water-facing side and greater active water and soil pressure loads on the back side. This results in an excessive pressure difference between the two sides of the pump station, leading to stability issues such as slippage and overturning.

[0004] 2. Anti-buoyancy stability problem: The water level difference between the water-facing side and the back water side of the pumping station generates an upward pressure on the main body of the pumping station (i.e., buoyancy force and seepage pressure). When the upward pressure exceeds the self-weight of the structure and the load on the upper part, it will cause the entire pumping station structure to float up, resulting in anti-buoyancy instability and failure. This risk is particularly prominent during rainstorms or floods and during the receding water period when the groundwater level rises or falls sharply.

[0005] 3. Settlement stability issues: Groundwater seepage into the foundation soil can cause soil softening, reduce the bearing capacity of the foundation, and lead to uneven settlement of the structure.

[0006] To address these issues, the traditional approach is to reinforce the soil around the pumping station and implement foundation treatment measures or pile foundations at the bottom of the station. However, this method suffers from low drainage efficiency, poor systemicity, limited stability, and high cost. Therefore, there is an urgent need for a structural solution that can actively, reliably, and efficiently remove groundwater, effectively control the groundwater level, and thus significantly improve the overall stability of the pumping station. Utility Model Content

[0007] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a stable structure for riverside pumping stations, especially a stable structure for riverside pumping stations including geogrids and drainage systems. This system can effectively reduce the groundwater pressure around the pumping station, prevent slippage, buoyancy, and settlement, and ensure the long-term stable operation of the pumping station.

[0008] This utility model is achieved through the following technical solution: The stabilizing structure for the Linhe pumping station includes the main body of the pumping station (1), the geogrid reinforcement structure of the backwater side soil of the pumping station, and a drainage system integrated between the main body of the pumping station and the backwater side soil. The geogrid reinforcement structure of the backwater side soil of the pumping station is formed by combining and reinforcing the backwater side soil (9) and the geogrid (8). The geogrid (8) is a multi-layer structure with upper and lower separation. It is arranged in the backwater side soil (9) by layered backfilling and compaction to form the geogrid reinforcement of the backwater side soil of the pumping station.

[0009] Preferably, the geogrid (8) is connected to each other by binding.

[0010] Preferably, the drainage system includes a drainage layer (4) for collecting seepage water, an annular drainage pipe (5), and a horizontal drainage pipe (6); the drainage layer (4) is laid between the main body of the pump station (1) and the backwater side soil (9) and extends to the side wall of the pump body and the side wall soil; the annular drainage pipe (5) is buried in the drainage layer (4), and is buried in a ring along the outer contour of the outer wall of the pump station (2), and is inclined to both sides from the middle position of the outer wall of the pump station, for collecting seepage water and discharging it into the river; the horizontal drainage pipe (6) penetrates the outer wall of the pump station, for collecting seepage water inside the drainage layer (4) and discharging it into the pump station intake pool (3).

[0011] Preferably, the drainage layer (4) is made of a permeable material, at least of graded crushed stone or gravel.

[0012] Preferably, the annular drainage pipe (5) is a PVC perforated water-permeable pipe.

[0013] Preferably, the slope of the annular drainage pipe (5) is between 3% and 5%.

[0014] Preferably, the outer periphery of the annular drainage pipe (5) is wrapped with a geotextile filter layer (7).

[0015] Preferably, the upper end of the horizontal drain pipe (6) is connected to the drainage layer (4), and the lower end is exposed to the pump station inlet pool (3).

[0016] Preferably, the slope of the horizontal drain pipe (6) is between 3% and 5%.

[0017] The present invention relates to a stable structure for a riverside pumping station. This structure enhances the drainage capacity of the soil on the back side of the pumping station by setting up a drainage system, thereby reducing the water pressure load on the back side and solving structural stability problems such as slippage, buoyancy, and settlement of the pumping station.

[0018] The stabilizing structure of this utility model for riverside pumping stations is particularly suitable for pumping stations built near rivers, where there is a large difference in elevation and load on both sides, making them particularly prone to structural instability problems such as slippage, buoyancy, and settlement.

[0019] The stabilizing structure of this utility model for riverside pumping stations has been verified through actual engineering projects to significantly improve the structural stability of pumping stations built near rivers, and has significant economic benefits and promotional value. Attached Figure Description

[0020] Figure 1 This is a top view schematic diagram of the stabilizing structure of the present invention used in a riverside pumping station.

[0021] Figure 2 This is a cross-sectional side view schematic diagram of the stabilizing structure of the present invention used in a riverside pumping station (along... Figure 1 (middle aa line).

[0022] Figure 3 This is a front view of the cross-sectional view of the stabilizing structure of the present invention used in a riverside pumping station (along...). Figure 1 (Middle BB line).

[0023] Figure 4 This is a schematic diagram of the geogrid of this utility model after the end is bent and compacted in layers.

[0024] Explanation of reference numerals in the attached figures: 1. Pump station main body; 2. Pump station exterior wall; 3. Pump station intake pool; 4. Drainage layer; 5. Annular drainage pipe; 6. Horizontal drainage pipe; 7. Geotextile filter layer; 8. Geogrid; 9. Backwater side soil; 10. River channel. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] This utility model provides a stable structure for riverside pumping stations, including a pumping station body, a geogrid, a pumping station intake pool, and an integrated drainage system. The integrated drainage system includes a drainage layer laid around the outer wall of the pumping station, an annular drainage pipe buried in the drainage layer, and a horizontal drainage pipe installed on the outer wall of the pumping station. Water in the soil on the back side flows through the drainage layer into the annular drainage pipe and the horizontal drainage pipe, and is eventually discharged into the river channel. Through active and efficient drainage, the water pressure load on the back side is reduced, and the lateral pressure of the soil is reduced through the geogrid. Therefore, the total lateral pressure acting on the pumping station body is significantly reduced, preventing structural slippage, floating, and uneven settlement, and improving the structural stability of the pumping station. It is especially suitable for pumping station projects built near rivers.

[0027] like Figure 1 , Figure 2 , Figure 3as well as Figure 4 As shown, the stable structure for a riverside pumping station provided by this utility model mainly includes a pumping station body 1, a backwater side soil 9, and an integrated drainage system integrated between the pumping station body and the backwater side soil. The pumping station body 1 is built between the river channel 10 and the backwater side soil 9. The backwater side soil of the pumping station is reinforced by geogrid by combining the backwater side soil (9) and geogrid (8). The geogrid (8) is a multi-layered structure with upper and lower separation, which is arranged in the backwater side soil (9) by layered backfilling and compaction. Its ends are bent, as shown. Figure 4 As shown, the foldback length is 1200mm, and the backfilling and compaction are arranged in layers, thus ultimately forming the geogrid reinforcement of the soil on the backwater side of the pump station.

[0028] In some embodiments, the soil reinforcement and stabilization measures on the back side of the pumping station are to reinforce the soil (9) on the back side using geogrids and then backfill and compact it in layers.

[0029] In some embodiments, the drainage system includes a drainage layer (4) for collecting seepage water, an annular drainage pipe (5), and a horizontal drainage pipe (6). In some embodiments, the drainage layer is laid between the pump station body and the soil on the back side, and is made of a permeable material for collecting seepage water. Preferably, the drainage layer is made of graded crushed stone or gravel. In some embodiments, a drainage layer is also provided between the sidewall of the pump station body and the corresponding soil, together forming the drainage layer described in this application.

[0030] In some embodiments, the annular drainage pipe is buried in the drainage layer and arranged around the outer wall of the pumping station to collect infiltrated water and discharge it into the river. Preferably, the drainage pipe is a perforated permeable pipe that slopes from the middle of the outer wall of the pumping station to both sides. Preferably, the slope is between 3% and 5%.

[0031] In some embodiments, the horizontal drainage pipe penetrates the outer wall of the pumping station, with its upper end connected to the drainage layer and its lower end exposed in the inlet pool inside the pumping station. It collects seepage water from the drainage layer and discharges it into the pumping station inlet pool 3. Preferably, the slope is between 3% and 5%. The pumping station inlet pool 3 is located at the bottom of the pumping station body 1. In some embodiments, the outer periphery of the annular drainage pipe is also wrapped with a geotextile filter layer to prevent soil particles from entering and causing blockage. Using geotextile material to wrap gravel effectively prevents the intrusion of fine soil particles. In some embodiments, the top of the horizontal drainage pipe 6 is wrapped with a geotextile filter layer to prevent the intrusion of fine soil particles.

[0032] The following is a specific embodiment illustrating how this application is constructed: During construction, the stabilizing structure of this utility model involves excavating the soil on the backwater side 9, laying a geogrid 8, and then backfilling and compacting it. Next, a layer of graded crushed stone with a thickness of 300mm-500mm is laid between the pump station body 1 and the backwater side soil 9 to form a drainage layer 4. Within the drainage layer 4, an annular PVC perforated drainage pipe 5 is embedded along the outer contour of the pump station's outer wall 2. Its outer circumference is wrapped with a geotextile filter layer 7 to prevent the intrusion of fine soil particles. The annular drainage pipe 5 slopes from the middle of the pump station's outer wall to both sides at a gradient of 3%-5%, used to collect seepage water and discharge it into the river channel. The horizontal drainage pipe 6 is a PVC drainage pipe that is obliquely inserted through the outer wall 2 of the pump station. Its upper end is connected to the drainage layer, and its lower end is exposed in the inlet pool 3 inside the pump station. The slope is between 3% and 5%. Its top is wrapped with a geotextile filter layer 7 to prevent fine soil particles from intruding. It is used to collect the seepage water inside the drainage layer 4 and discharge it into the inlet pool 3 of the pump station.

[0033] The working principle of this utility model is as follows: After excavating the soil on the backwater side 9, laying geogrid 8, and performing replacement and compaction, the lateral earth pressure of the soil on the backwater side 9 on the outer wall 2 of the pump station was reduced. When the groundwater level inside the soil on the backwater side 9 is high, the groundwater flows to the drainage layer 4 under the action of seepage pressure, flows into the river channel through the annular drainage pipe 5, and simultaneously flows into the inlet pool 3 inside the pump station through the horizontal drainage pipe 6. This process continuously lowers the groundwater level inside the soil on the backwater side 9 of the pump station to the same level as the water level in the river channel 10 inside the pump station, thereby reducing the uplift pressure. Through the above two steps, the earth pressure and water pressure on the main body 1 of the pump station are reduced, which can avoid structural instability problems such as slippage, floating, and settlement of the pump station.

[0034] This utility model discloses a stabilizing structure for riverside pumping stations. It addresses structural stability issues such as slippage, buoyancy, and settlement by implementing a drainage system to enhance the drainage capacity of the soil on the back side of the pumping station and reduce water pressure load on that side. This stabilizing structure is particularly suitable for pumping stations built near rivers, where there are significant differences in elevation and load on both sides, making them prone to slippage, buoyancy, and settlement. Verified in actual engineering projects, this stabilizing structure significantly improves the structural stability of pumping stations built near rivers, demonstrating significant economic benefits and widespread application value.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and it is therefore intended to include all changes falling within the meaning and scope of the equivalents of the claims within this utility model.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A stabilizing structure for riverside pumping stations, characterized in that, It includes the main body of the pump station (1), the geogrid reinforcement structure of the back water side of the pump station, and a drainage system integrated between the main body of the pump station and the back water side soil. The geogrid reinforcement structure of the back water side soil is formed by combining and reinforcing the back water side soil (9) and the geogrid (8). The geogrid (8) is a multi-layer structure with upper and lower separation. It is arranged in the back water side soil (9) by layered backfilling and compaction to form the geogrid reinforcement of the back water side soil of the pump station.

2. The stabilizing structure for a riverside pumping station according to claim 1, characterized in that, The geogrid (8) is connected to each other by binding.

3. The stabilizing structure for a riverside pumping station according to claim 2, characterized in that, The drainage system includes a drainage layer (4) for collecting seepage water, an annular drainage pipe (5), and a horizontal drainage pipe (6); the drainage layer (4) is laid between the main body of the pump station (1) and the backwater side soil (9) and extends to the side wall of the pump body and the side wall soil; the annular drainage pipe (5) is buried in the drainage layer (4), and is buried in a ring along the outer contour of the outer wall of the pump station (2), and is inclined to both sides from the middle position of the outer wall of the pump station, for collecting seepage water and discharging it into the river; the horizontal drainage pipe (6) penetrates the outer wall of the pump station, for collecting seepage water inside the drainage layer (4) and discharging it into the pump station intake pool (3).

4. The stabilizing structure for a riverside pumping station according to claim 3, characterized in that, The drainage layer (4) is made of permeable material, at least of graded crushed stone or gravel.

5. The stabilizing structure for a riverside pumping station according to claim 3, characterized in that, The annular drainage pipe (5) is a PVC perforated water-permeable pipe.

6. The stabilizing structure for a riverside pumping station according to claim 3, characterized in that, The slope of the annular drainage pipe (5) is between 3% and 5%.

7. The stabilizing structure for a riverside pumping station according to claim 6, characterized in that, The outer periphery of the annular drainage pipe (5) is wrapped with a geotextile filter layer (7).

8. The stabilizing structure for a riverside pumping station according to claim 3, characterized in that, The upper end of the horizontal drainage pipe (6) is connected to the drainage layer (4), and the lower end is exposed to the pump station inlet pool (3).

9. The stabilizing structure for a riverside pumping station according to claim 3, characterized in that, The slope of the horizontal drainage pipe (6) is between 3% and 5%.

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