A quick access passageway for floodwall closure systems
By using gate piers, sealing airbags, and stop steel pipes in the access channels of flood control walls, combined with stainless steel clips and water-swellable rubber strips, the problem of requiring large machinery to seal the access channels of traditional flood control walls has been solved, achieving rapid and convenient closure and opening, and providing excellent water-blocking effect.
Patent Information
- Application Number
- CN202521770991.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-19
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-19
AI Technical Summary
Traditional methods of sealing off access points to flood control walls require large machinery and equipment, making it difficult to quickly form a closed flood control system, and the seepage prevention effect is poor.
The gate piers are constructed with cast-in-place concrete, and the gate features detachable sealing airbags and stop steel pipes. Combined with stainless steel clips and water-swellable rubber strips, the gates can be quickly closed and opened by inflating and deflating the airbags and expanding and contracting the rubber strips.
It achieves quick and convenient sealing and opening, has a good water-blocking effect, and is simple, lightweight, and low-cost in structure.
Smart Images

Figure CN224678614U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a rapid access channel for a flood control wall enclosure system. Background Technology
[0002] Temporary flood control walls are water-retaining facilities set up to meet temporary needs such as construction, emergency rescue, or breaches in the flood control wall. They are commonly found along river channels and are a frequently used flood control structure in water conservancy projects. During actual construction, access channels are often reserved in the temporary flood control wall to facilitate the entry and exit of personnel, materials, and equipment. These access channels are typically sealed using steel gates, sandbags, soil filling, or wooden planks to form a closed flood control system, thus meeting the flood control requirements during construction.
[0003] Traditional methods of sealing off access channels often require the use of large machinery for installation and dismantling, which cannot take into account the advantages of short operation time, high operation efficiency, and good seepage prevention effect, and cannot quickly form a flood control closure system. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a rapid access channel for a flood control wall enclosure system. It can be opened and closed quickly, has a good water-blocking effect when closed, and is easy to operate and inexpensive.
[0005] The purpose of this utility model is achieved as follows: a rapid access channel for a flood control wall enclosure system, comprising two gate piers, a sealing airbag, and three stop steel pipes; wherein, The gate piers are cast-in-place concrete structures; two gate piers are spaced apart to form an access passage, and the bottom surfaces of the two gate piers are connected to a concrete base plate; three side door slots are vertically provided on the inner side of each gate pier; three bottom door slots are horizontally provided on the top surface of the base plate; and three rows of limiting rings are pre-embedded on the backwater surface of each gate pier. The sealing airbag is detachably installed between two gateposts. The sealing airbag includes an airbag body whose length is adapted to the width of the access channel and an air valve on the back side of the airbag body. Three side strips corresponding to the three side door slots on the gateposts are heat-fused to each side of the airbag body, so that the three side strips are embedded in the three side door slots of the two gateposts. Three bottom strips corresponding to the three bottom door slots on the bottom plate are heat-fused to the bottom surface of the airbag body, so that the three bottom strips are embedded in the three bottom door slots on the bottom plate. The cross-sectional dimensions of the stop steel pipe are adapted to the inner diameter of the limiting sleeve, and the length of the stop steel pipe is the sum of the width of the access channel and the width of the two gate pillars; the three stop steel pipes are located on the backwater side of the sealing airbag and are inserted one by one into the three rows of limiting sleeves on the backwater surface of the two gate pillars.
[0006] The aforementioned rapid access channel for the flood control wall enclosure system includes an airbag body with a three-layer structure: an outer layer of plastic, a middle layer of fabric, and an inner layer of butyl rubber.
[0007] The aforementioned rapid access channel for the flood control wall enclosure system includes three side strips, one of which is a stainless steel clip and the other two are water-swellable rubber strips. The three bottom strips also include one of which is a stainless steel clip and the other two are water-swellable rubber strips.
[0008] The rapid access channel for a flood control wall enclosure system of this utility model is characterized by the following: It utilizes gate piers, stop steel pipes, and sealing airbags, with stainless steel clips and water-swellable rubber strips installed on the airbags. The sealing and water-blocking effects are achieved through the inflation of the airbag and the expansion of the rubber strips. Rapid opening is achieved through operations such as deflating the airbag, the shrinking of the water-swellable rubber strips upon removal from water, the removal of the stop steel pipe, and the handling of the sealing airbag. This utility model's access channel provides excellent water-blocking performance when closed, and also boasts advantages such as simple structure, lightweight, easy operation, high practicality, and low cost. Attached Figure Description
[0009] Figure 1 This is a plan view (open state) of the rapid access channel for the flood control wall enclosure system of this utility model. Figure 2 This is a plan view (closed state) of the rapid access channel for the flood control wall enclosure system of this utility model. Figure 3 yes Figure 1 View A in the middle; Figure 4 This is a plan view of the sealing airbag in the rapid access channel of the flood control wall enclosure system of this utility model; Figure 5 yes Figure 2 BB view in the middle; Figure 6 yes Figure 2 The CC view in the middle. Detailed Implementation
[0010] The present invention will be further described below with reference to the accompanying drawings.
[0011] Please see Figures 1 to 6 The present invention provides a rapid access channel for a flood control wall enclosure system, comprising two gateposts 11, a sealing airbag 2, and three stop steel pipes 3.
[0012] The gate pier 11 is a cast-in-place concrete structure; two gate piers 11 are spaced apart and form an access passage 10, and the bottom surfaces of the two gate piers 11 are connected by a concrete base plate 12; the plan of each gate pier 11 is rectangular, and three side door slots 13 are vertically provided on the inner side of each gate pier 11; three bottom door slots 14 are horizontally provided on the top surface of the base plate 12; three rows of limiting rings 15 are pre-embedded from top to bottom on the backwater surface of each gate pier 11; there are two limiting rings 15 in each row.
[0013] The sealing airbag 2 is detachably installed between two gateposts 11. The sealing airbag 2 includes an airbag body 20 and an air valve 21 located on the backwater surface or top surface of the airbag body 20. The length of the airbag body 20 is adapted to the width of the access channel 10, and the height and thickness of the airbag body 20 are adapted to the height and thickness of the gateposts 11. The airbag body 20 has a three-layer structure: an outer layer of plastic, a middle layer of fabric, and an inner layer of butyl rubber. Each side of the airbag body 20 is heat-fused with three side strips corresponding to the three side door grooves 13 on the gateposts 11. The middle side strip is located in the middle of the three side strips. One side strip is a stainless steel clip 23, and the other two side strips are water-swellable rubber strips 22. The bottom surface of the airbag body 20 is each heat-fused with three bottom strips that correspond one-to-one with the three bottom door grooves 14 on the base plate 12. The middle bottom strip is a stainless steel clip 23, and the other two bottom strips are water-swellable rubber strips 22. The three side strips at both ends of the airbag body 20 are embedded one-to-one in the three side door grooves 13 of the two door piers 11, and the three bottom strips on the bottom surface of the airbag body 20 are embedded one-to-one in the three bottom door grooves 14 on the base plate 12.
[0014] The stop steel pipe 3 is a square tube with a cross-sectional size of 50mm×50mm, which is compatible with the inner diameter of the limiting sleeve 14. The length of the stop steel pipe 3 is the sum of the width of the access passage 10 and the width of the two gate pillars 11. The three stop steel pipes 3 are located on the back side of the sealing airbag 2 and are inserted one by one into the three rows of limiting sleeves 14 on the back side of the two gate pillars 11.
[0015] The operating method of the rapid access channel for the flood control wall enclosure system of this utility model is as follows: First, during the construction of the temporary flood control wall 100, the location of the access passage is selected. At the selected location, a C20 concrete cast-in-place gate pier 11 base slab 12 is used. The preferred dimensions of the concrete base slab 12 are length × width = 6m × 1.2m, and thickness = 30mm. The top surface elevation of the base slab 12 is the same as the ground elevation. A bottom door groove 14 is pre-reserved on the top surface of the base slab 12, with a width × depth of 100mm × 90mm. The plan dimensions of the concrete gate pier column 11 are as follows: Preferably, the length × width = 1m × 1m, and the height is the same as the elevation of the corresponding temporary flood control wall. A side door groove 13 is reserved on the inner side of the gate pier column 11. The width × depth of the side door groove 13 is 100mm × 90mm. A limiting sleeve 15 is embedded on the backwater side of the gate pier column 11. A sealing airbag 2 is customized according to the size of the gate pier column 11. The position of the water-swellable rubber strip 22 and the position of the stainless steel clip 23 on the sealing airbag 2 are adapted to the positions of the side door groove 13 and the bottom door groove 14.
[0016] In the closed state of the access passage 10: the sealing airbag 2 is moved between the two gate pillars 11. The two water-expanding rubber strips 22 and stainless steel clips 23 on the two sides of the sealing airbag 2 are inserted into the three side gate slots 13 one by one, and the two water-expanding rubber strips 22 and stainless steel clips 23 on the bottom of the sealing airbag 2 are inserted into the three bottom gate slots 14 one by one. Then the air valve 21 is connected to the air pump to inflate the airbag body 20. During the inflation process, the stop steel pipe 3 is inserted into the limiting sleeve 15 on the back water surface of the two gate pillars 11. When the airbag body 20 inflates to the design size, it is firmly locked between the two gate pillars 11. When the water level rises, the water-swellable rubber strip 22 expands upon contact with water, filling the reserved side door groove 13 in the gate pier column 11 and the reserved bottom door groove 14 in the base plate 12, thus achieving a water-stopping effect; at this time, the sealing airbag 2, the two gate pier columns 11 and the temporary flood control wall together form a flood control enclosure system.
[0017] Access passage 10 in open state: When the water level drops, the rubber strip 22 expands when it comes into contact with water and contracts, the air valve 21 is opened to release air, the stop steel pipe 3 is pulled out from the limit ring 15, and after the airbag body 20 is completely emptied of air, the sealing airbag 2 can be manually lifted and stored in the warehouse, leaving only the two door piers 11. Access passage 10 is then switched to open state, and personnel and vehicles can quickly enter and exit.
[0018] This utility model is used for a rapid access channel in a flood control wall enclosure system. It utilizes two gateposts 11, three stop steel pipes 3, and sealing airbags 2. Stainless steel clips 23 and water-swellable rubber strips 22 are installed on the sealing airbags 2. The airbag body 20 is inflated, and the water-swellable rubber strips 22 achieve a sealing and water-blocking effect. Rapid opening is achieved through operations such as deflating the airbag body 20, shrinking the water-swellable rubber strips 22 upon removal from water, removing the stop steel pipes 3, and moving the sealing airbags 2.
[0019] The above embodiments are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention and should be defined by the claims.
Claims
1. A rapid access passage for a flood control wall enclosure system, comprising two gate piers, a sealing airbag, and three stop steel pipes; characterized in that, The gate piers are cast-in-place concrete structures; two gate piers are spaced apart to form an access passage, and the bottom surfaces of the two gate piers are connected to a concrete base plate; three side door slots are vertically provided on the inner side of each gate pier; three bottom door slots are horizontally provided on the top surface of the base plate; and three rows of limiting rings are pre-embedded on the backwater surface of each gate pier. The sealing airbag is detachably installed between two gateposts. The sealing airbag includes an airbag body whose length is adapted to the width of the access passage and an air valve on the back side of the airbag body. Three side strips corresponding to the three side door slots on the gateposts are heat-fused to each side surface of the airbag body, so that the three side strips are embedded in the three side door slots of the two gateposts. Three bottom strips corresponding to the three bottom door slots on the bottom plate are heat-fused to the bottom surface of the airbag body, so that the three bottom strips are embedded in the three bottom door slots on the bottom plate. The cross-sectional dimensions of the stop steel pipe are adapted to the inner diameter of the limiting sleeve, and the length of the stop steel pipe is the sum of the width of the access channel and the width of the two gate pillars; the three stop steel pipes are located on the backwater side of the sealing airbag and are inserted one by one into the three rows of limiting sleeves on the backwater surface of the two gate pillars.
2. The rapid access channel for the flood control wall enclosure system according to claim 1, characterized in that, The airbag body has a three-layer structure: the outer layer is plastic, the middle layer is fabric, and the inner layer is butyl rubber.
3. The rapid access channel for the flood control wall enclosure system according to claim 1, characterized in that, Of the three side strips, the middle one is a stainless steel clip, and the other two are water-swellable rubber strips. Of the three bottom strips, the middle one is a stainless steel clip, and the other two are water-swellable rubber strips.