Temporary plugging system for multi-layer underground structure and working method
By using a combination of temporary sealing partition walls and automatic pressure relief systems in the underground structure, the problems of excessive thickness of temporary sealing partition walls and invasion of water and soil in the existing technology are solved, and automatic water pressure relief and construction quality are achieved. , reducing the difficulty of material use and construction.
Patent Information
- Application Number
- CN202411274016.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2024-12-27
AI Technical Summary
Due to the excessive thickness of temporary sealing partition walls in existing underground projects, it is difficult to construct and difficult to ensure quality, and there are problems of water and soil intrusion, resulting in waste of materials and safety hazards.
A multi-layer underground structure temporary sealing system is adopted, including temporary sealing partition walls and automatic pressure relief systems. By reserving shear grooves and brick walls between the concrete partition walls and the enclosure structure, and setting pressure relief on the drainage pipes Components, automatic pressure relief system runs through the concrete partition wall and ends inside the brick wall to reduce external water pressure.
Effectively reduce the water pressure of temporary sealing walls, reduce material use, simplify the difficulty of later construction, ensure the quality of structural connections, and save costs.
Smart Images
Figure CN119195231A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of temporary plugging of a main part of an underground structure, and in particular relates to a temporary plugging system and a working method for a multi-layer underground structure. Background Art
[0002] At present, underground projects are generally constructed and operated in stages. The first operating parts are often constructed earlier, and the later operating parts cannot be constructed synchronously with the first operating parts due to various reasons. The first construction parts need to reserve connection conditions for the later construction parts. At the same time, in order to prevent water and soil from invading the first construction parts and affecting the operation, temporary partition walls need to be set up at the first and second construction parts to resist the water and soil pressure on the soil side. At present, most temporary retaining walls are simple concrete partition walls, which are set close to the outer enclosure structure. For underground multi-story structures, temporary concrete partition walls are set thicker to resist external water and soil pressure, and more concrete and steel bars are used. During the construction of the later construction structure, more chiseling is done and the construction is difficult, which wastes materials and makes it difficult to ensure the construction quality. It is easy to cause water leakage and safety hazards at the interfaces of short-term and long-term structures.
[0003] Therefore, it is very necessary to develop a temporary blocking system for underground multi-layer structures that can reduce external water pressure and thus thin the concrete temporary blocking partition wall, save materials, reduce the difficulty of later construction drawings, and ensure the quality of later construction. Summary of the invention
[0004] The present invention is proposed to solve the problems existing in the prior art, and its purpose is to provide a temporary plugging system for a multi-layer underground structure and a working method.
[0005] The technical solution adopted by the present invention to solve this problem is: A temporary blocking system for a multi-layer underground structure, comprising a temporary blocking partition wall and an automatic pressure relief system, wherein: Temporary blocking partition wall, which includes a concrete partition wall for temporary blocking set at the end of the previous construction, a certain distance is reserved between the concrete partition wall and the enclosure structure for setting the shear groove of the layer plate, and a brick wall is set in the gap between the concrete partition wall and the enclosure structure; The automatic pressure relief system comprises a drainage pipe which penetrates through a concrete partition wall and ends at the inside of a brick wall, wherein a pressure relief assembly is arranged on the drainage pipe.
[0006] In the above technical solution, the drainage pipe passes through the concrete partition wall from the inside of the temporary blocking partition wall structure in the horizontal direction and is buried in the brick wall. The end of the drainage pipe buried in the brick wall is provided with a sieve hole.
[0007] In the above technical solution, the specification of the sieve hole is Φ30mm@150mm.
[0008] In the above technical solution, the drainage pipe is located above the layer plate, and the drainage pipe is arranged at a position of the concrete partition wall 100 mm away from the layer plate.
[0009] In the above technical solution, the drainage pipe is a Φ150mm steel pipe.
[0010] In the above technical solution, the drainage pipe is provided with a water stop flange at the location of the concrete partition wall.
[0011] In the above technical solution, the water stop flange ring is 100 mm wide and ≥ 8 mm thick.
[0012] In the above technical solution, the welding surface between the water-stop flange and the drain pipe is provided with water-swellable water-stop glue.
[0013] In the above technical solution, the pressure relief assembly includes a main valve, a filter cleaning plug, a pressure gauge and a pressure relief ball valve which are sequentially arranged on the drain pipe in a direction away from the temporary blocking partition wall.
[0014] In the above technical solution, the thickness of the shear groove is half of the thickness of the layer plate, and the width is consistent with the width of the brick wall.
[0015] The second invention object of the present invention is to provide a working method of the above-mentioned temporary blocking system for multi-layer underground structures, which is divided into a temporary blocking stage, an automatic pressure relief stage and a temporary blocking partition wall removal stage according to the order before and after construction, wherein: S1. In the temporary blocking stage, the following steps are included: S101. Construction of temporary blocking partition wall A temporary blocking concrete partition wall is set up at the end of the early construction. A certain distance is reserved between the concrete partition wall and the retaining structure for setting the shear groove of the layer plate, and a brick wall is set up in the gap between the retaining structure and the concrete partition wall; S102. Construction of automatic pressure relief system A drainage pipe with a pressure relief component is installed in the temporary blocking partition wall, the drainage pipe passes through the concrete partition wall and ends inside the brick wall; S2. In the automatic pressure relief stage, the main valve on the drainage pipe can be opened and set to automatically release pressure when the pressure exceeds a certain value. When the water pressure outside the structure exceeds the value, the groundwater outside the structure is automatically released to reduce the water pressure that the temporary blocking wall should bear. S3. During the stage of removing temporary blocking partition walls, the reserved shear grooves of the layer boards can reduce the difficulty of removing the temporary blocking partition walls in the later stage, thereby ensuring the quality of the connection between the new and old structures.
[0016] The advantages and positive effects of the present invention are: 1. After the main structure is constructed, the present invention opens the main valve and automatically releases the pressure after the pressure exceeds a certain value. When the water level outside the structure rises and the side water pressure exceeds the value, the groundwater outside the structure is automatically released, thereby reducing the water pressure that the temporary blocking wall should bear. Because the external water pressure is released, the temporary blocking wall can be appropriately thinned, reducing the construction difficulty of the later structural connection and ensuring the construction quality.
[0017] 2. The present invention can effectively reduce the water pressure outside the temporary structure, reduce the water and soil pressure acting on the temporary partition wall, reduce the thickness of the partition wall, reduce waste materials, save costs, reduce the difficulty of later chiseling, and ensure construction quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it should be understood that these drawings are designed only for explanation purposes and are not intended to limit the scope of the present invention. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.
[0019] Figure 1 is a schematic diagram of the structure of Embodiment 1 of the present invention; The markings in the figure are: 1. Brick wall; 2. Concrete partition wall; 3. Drain pipe; 4. Sieve hole; 5. Water-stop flange; 6. Shear groove; 7. Water-swelling water-stop glue; 8. Main valve; 9. Filter cleaning plug; 10. Pressure gauge; 11. Pressure relief ball valve. DETAILED DESCRIPTION
[0020] First of all, it should be noted that the specific structure, features and advantages of the present invention will be specifically described below by way of example, but all descriptions are only for illustration and should not be understood as limiting the present invention. In addition, any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature displayed or implied in the drawings, can still be combined or deleted between these technical features (or their equivalents) to obtain more other embodiments of the present invention that may not be directly mentioned in this document. In addition, in order to simplify the drawings, the same or similar technical features may be marked only in one place in the same drawing.
[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", "connection", "fixation", "screwing" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The present invention is described in detail below with reference to the accompanying drawings. Example 1
[0022] A temporary blocking system for a multi-story underground structure, including a temporary blocking partition wall and an automatic pressure relief system; the temporary blocking partition wall includes a concrete partition wall 2 set at the end of an early construction for temporary blocking, a certain distance is reserved between the concrete partition wall 2 and the surrounding structure for setting a shear groove 6 of the layer plate, and a brick wall 1 is set in the gap between the concrete partition wall 2 and the surrounding structure; the automatic pressure relief system includes a drainage pipe 3 that penetrates the concrete partition wall 2 and ends at the inside of the brick wall 1, and a pressure relief component is set on the drainage pipe 3.
[0023] In this embodiment, the temporary blocking system of the multi-layer underground structure includes a temporary blocking partition wall and an automatic pressure relief system, wherein: The temporary blocking partition wall includes a brick wall 1 and a temporary blocking concrete partition wall 2. Specifically, a temporary blocking concrete partition wall 2 is set at the end of the previous construction, and a waterproof protection brick wall is set on one side of the concrete partition wall 2 to protect the waterproof layer constructed in advance. A certain distance is reserved between the concrete partition wall 2 and the enclosure structure for setting the layer shear groove 6, and a brick wall 1 is set in the gap between the enclosure structure and the concrete 2 to protect the main structure and external waterproof layer constructed in advance.
[0024] The automatic pressure relief system includes a drainage pipe, a water stop flange, a valve, a steel pipe, a pressure gauge, a pressure relief ball valve, a filter cleaning plug, etc. Specifically: a drainage pipe 3 is arranged at a position 100mm away from the layer plate at the bottom of the concrete partition wall 2. It is generally arranged above the structural bottom plate, and can also be arranged above the middle layer plate according to needs. One side of the drainage pipe 3 passes through the concrete partition wall 2, and the end is buried in the autoclaved lime sand brick wall 1 and a sieve hole 4 is set; the drainage pipe passing through the concrete partition wall 2 is welded with a water stop flange, and the welding surface of the water stop flange and the drainage pipe is provided with water-expanding water stop glue. The drainage pipe 3 adopts a steel pipe with a diameter of 150 (t=5), and the upper part thereof is respectively provided with a main valve 8, a filter cleaning plug 9, a pressure gauge 10 and an automatic pressure relief ball valve 11.
[0025] After the main structure is constructed, the main valve 8 can be opened and set to automatically release pressure when the pressure exceeds a certain value. When the water level outside the structure rises and the side water pressure exceeds the value, the groundwater outside the structure is automatically released to reduce the water pressure that the temporary blocking wall should bear. The temporary blocking system of the multi-layer underground structure can reduce the water pressure outside the temporary blocking partition wall through the automatic pressure relief system, thereby optimizing the thickness of the temporary blocking partition wall, saving materials and reducing costs; at the same time, shear grooves can be reserved to reduce the difficulty of chiseling out the temporary blocking partition wall in the later stage, speed up the progress of the project, and ensure the quality of the connection between the new and old structures.
[0026] Furthermore, in this embodiment, it can also be considered that the drainage pipe 3 passes through the concrete partition wall 2 from the inside of the temporary blocking partition wall structure in the horizontal direction and is buried in the brick wall 1. The end of the drainage pipe 3 buried in the brick wall 1 is provided with a sieve hole 4. Figure 1 As shown, the drainage pipe 3 is buried under the concrete partition wall 2 and the autoclaved fly ash sand brick wall 1, and a steel pipe reserved sieve hole is set at the autoclaved fly ash sand brick wall 1. The specification of the sieve hole 4 is preferably 30mm in diameter and 150mm in spacing.
[0027] Furthermore, in this embodiment, it can also be considered that the drainage pipe 3 is located above the floor plate, and the drainage pipe 3 is arranged at a position of the concrete partition wall 2 100 mm away from the floor plate.
[0028] Furthermore, it can also be considered in this embodiment that the drainage pipe 3 generally adopts a steel pipe with a diameter of 150 mm (t=5 mm), and its diameter can also be adjusted according to the surrounding groundwater level.
[0029] Furthermore, in this embodiment, it is also possible to consider burying the drainage pipe 3 under the concrete partition wall 2 and the brick wall 1, and setting a water stop flange 5 at the position of the concrete partition wall 2. The specification of the water stop flange 5 is preferably a ring width of 100mm and a thickness ≥8mm.
[0030] Furthermore, in this embodiment, it can also be considered that the welding surface of the water stop flange 5 and the drain pipe 3 is provided with a water-swellable water stop glue 7, such as Figure 1 As shown, a water-swellable water-stopping adhesive 7 is arranged behind the water-stopping flange 5 welded on the drain pipe 3 .
[0031] Furthermore, in this embodiment, the pressure relief assembly includes a main valve 8, a filter cleaning plug 9, a pressure gauge 10 and a pressure relief ball valve 11 which are sequentially arranged on the drain pipe 3 in a direction away from the temporary blocking partition wall. Figure 1As shown, the drain pipe 3 and the valve 8, filter cleaning plug 9, pressure gauge 10 and pressure relief ball valve 11 sequentially arranged on the drain pipe 3 located inside the structure constitute an automatic pressure relief system. After the main structure is constructed, the main valve 8 can be opened and set to automatically release the pressure after the pressure exceeds a certain pressure. When the water level outside the structure rises and the side water pressure exceeds the value, the groundwater outside the structure is automatically relieved to reduce the water pressure that the temporary blocking wall should bear.
[0032] Furthermore, in this embodiment, it can also be considered that the shear groove 6 as the layer plate has a thickness generally half of the structural layer plate and a width consistent with the brick wall 1, generally 200 mm; its specific setting size can also be changed according to engineering needs. Example 2
[0033] A working method of the temporary blocking system for a multi-layer underground structure described in the above-mentioned embodiment 1 is divided into a temporary blocking stage, an automatic pressure relief stage and a temporary blocking partition wall removal stage according to the order before and after construction, wherein: S1. In the temporary blocking stage, the following steps are included: S101. Construction of temporary blocking partition wall A temporary blocking concrete partition wall 2 is set at the end of the early construction. A certain distance is reserved between the concrete partition wall 2 and the enclosure structure for setting the layer shear groove 6. A brick wall 1 is set in the gap between the enclosure structure and the concrete partition wall 2. S102. Construction of automatic pressure relief system A drainage pipe 3 with a pressure relief component is arranged in the temporary blocking partition wall, and the drainage pipe 3 passes through the partition wall 2 and ends at the inside of the brick wall 1; S2. In the automatic pressure relief stage, the main valve 8 on the drainage pipe 3 can be opened, and the pressure can be automatically relieved after exceeding a certain value. When the water pressure outside the structure exceeds the value, the groundwater outside the structure is automatically relieved to reduce the water pressure that the temporary blocking wall should bear. S3. During the stage of chiseling out the temporary blocking partition wall, the reserved layer plate shear groove 6 can reduce the difficulty of chiseling out the temporary blocking partition wall in the later stage, thereby ensuring the connection quality of the new and old structures.
[0034] In summary, the present invention provides a temporary blocking system and working method for multi-layer underground structures that can effectively reduce the water pressure outside the temporary structure, reduce the water and soil pressure acting on the temporary partition wall, reduce the thickness of the partition wall, reduce waste materials, save costs, reduce the difficulty of later excavation, and ensure construction quality.
[0035] The above embodiments describe the present invention in detail, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.
Claims
1. A temporary plugging system for a multi-layer underground structure, characterized in that: It includes temporary blocking walls and automatic pressure relief systems, including: A temporary blocking partition wall, comprising a concrete partition wall (2) for temporary blocking set at the end of the previous construction, a certain distance between the concrete partition wall (2) and the enclosure structure is reserved for setting the shear groove (6) of the layer board, and a brick wall (1) is set in the gap between the concrete partition wall (2) and the enclosure structure; An automatic pressure relief system comprises a drainage pipe (3) which penetrates a concrete partition wall (2) and ends at the inside of a brick wall (1); a pressure relief component is provided on the drainage pipe (3).
2. A temporary plugging system for a multi-layer underground structure according to claim 1, characterized in that: The drainage pipe (3) passes through the concrete partition wall (2) from the inside of the structure in a horizontal direction and is embedded in the brick wall (1); a sieve hole (4) is provided at the end of the drainage pipe (3) embedded in the brick wall (1).
3. A temporary plugging system for a multi-layer underground structure according to claim 2, characterized in that: The specification of the sieve hole (4) is Φ30mm@150mm.
4. A temporary plugging system for a multi-layer underground structure according to claim 2, characterized in that: The drainage pipe (3) is located above the layer plate, and the drainage pipe (3) is arranged at a position of the concrete partition wall (2) 100 mm away from the layer plate.
5. A temporary plugging system for a multi-layer underground structure according to claim 2, characterized in that: The drainage pipe (3) is a Φ150 mm steel pipe.
6. A temporary plugging system for a multi-layer underground structure according to claim 2, characterized in that: The drainage pipe (3) is provided with a water stop flange (5) at a location located on the concrete partition wall (2).
7. A temporary plugging system for a multi-layer underground structure according to claim 6, characterized in that: The water stop flange (5) has a ring width of 100 mm and a thickness of ≥ 8 mm.
8. A temporary plugging system for a multi-layer underground structure according to claim 6, characterized in that: The welding surface between the water-stop flange (5) and the drainage pipe (3) is provided with a water-swellable water-stop adhesive (7).
9. A temporary plugging system for a multi-layer underground structure according to any one of claims 1 to 8, characterized in that: The pressure relief assembly comprises a main valve (8), a filter screen cleaning plug (9), a pressure gauge (10) and a pressure relief ball valve (11) which are arranged in sequence on the drainage pipe (3) in a direction away from the temporary blocking partition wall.
10. A working method of the temporary plugging system for a multi-layer underground structure as claimed in claim 9, characterized in that: According to the order of construction, it is divided into temporary blocking stage, automatic pressure relief stage and temporary blocking partition wall removal stage, among which: S1. In the temporary blocking stage, the following steps are included: S101. Construction of temporary blocking partition wall A temporary blocking concrete partition wall (2) is set at the end of the early construction, a certain distance is reserved between the concrete partition wall (2) and the enclosure structure for setting the layer plate shear groove (6), and a brick wall (1) is set in the gap between the enclosure structure and the concrete partition wall (2); S102. Construction of automatic pressure relief system A drainage pipe (3) with a pressure relief component is arranged in the temporary blocking partition wall, and the drainage pipe (3) passes through the concrete partition wall (2) and ends at the inside of the brick wall (1); S2. In the automatic pressure relief stage, the main valve (8) on the drain pipe (3) can be opened, and the pressure can be automatically relieved after the pressure exceeds a certain value; S3. During the chiseling stage of the temporary blocking partition wall, the reserved layer plate shear groove (6) can reduce the difficulty of chiseling the temporary blocking partition wall in the later stage, thereby ensuring the connection quality of the new and old structures.