Ultra-deep inspection well applied to outdoor drainage of mountain building
By setting up a water barrier structure in the ultra-deep inspection well, a multi-stage water drop design is achieved, which solves the problems of high water drop height and construction difficulty in mountainous platform construction projects, shortens the length of the drainage pipeline network and reduces the construction cost, and improves road safety.
Patent Information
- Application Number
- CN202420465768.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-03-11
AI Technical Summary
In mountainous platform construction projects, drainage methods with a pipe diameter of ≥300mm and a water drop height of >4m lead to too many manhole covers on the road, making the construction quality difficult to ensure, the road surface is cracked and the well ring manhole cover is damaged, posing a major safety hazard, and the construction is difficult and costly.
A super-deep inspection well is designed, and a water barrier structure is installed in the well room. Through a multi-stage water drop design, the length of the drainage pipe network and the excavation earth volume are reduced, the construction difficulty and cost are reduced, and the road safety is improved.
Through the multi-stage water drop design, the problem of high water drop height is solved, the length of the drainage pipe network is shortened, the excavation earth volume is reduced, the construction difficulty and cost are reduced, and the road safety is improved.
Smart Images
Figure CN222614464U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, in particular to an ultra-deep inspection well used for outdoor drainage of mountain buildings. Background Art
[0002] Article 4.5.2 of the "Outdoor Drainage Design Standard" stipulates that when the diameter of the water inlet pipe of the drop well is not greater than 200mm, the water head height of the first drop shall not be greater than 6m; when the pipe diameter is 300mm~600mm, the water head height of the first drop should not be greater than 4m. The drop method can be a vertical pipe or a rectangular vertical groove. When the pipe diameter is greater than 600mm, the water head height of the first drop and the drop method should be determined by hydraulic calculation; and in the national standard atlas "Reinforced Concrete and Brick Drainage Inspection Wells" 20S515, there is no relevant practice for the drop height of >4m for pipe diameter ≥300mm. In some mountain terrace construction projects, especially mountain hydropower station camp construction projects (the height difference between each terrace is greater than 4m), when designing the outdoor drainage organization, the diameter of the outdoor drainage pipe is usually ≥300mm, and the drainage of each terrace must be laid along the site road. The mountain road itself is winding, resulting in a long drainage route for the pipe network; mountain roads are inherently narrow, and the drainage pipe network is laid along the road. There are many hard rock layers in the roadbed. On the basis of roadbed excavation, trenches must be excavated, which makes construction difficult and costly; and there are many manhole covers on the road. When the construction quality of pipelines and inspection wells cannot be guaranteed, the road surface will crack, the manhole rings and manhole covers will be damaged, and there will be great safety hazards on the road surface. Utility Model Content
[0003] The technical problem to be solved by the utility model is that for terraces with pipe diameters ≥300mm and waterfall heights >4m, the current drainage method has many manhole covers on the road, the construction quality of pipelines and inspection wells cannot be guaranteed, the road surface is cracked, the manhole rings and manhole covers are damaged, the road surface has great safety hazards, the construction is difficult and the construction cost is high.
[0004] The utility model is realized by the following technical solutions:
[0005] An ultra-deep inspection well used for outdoor drainage of mountain buildings, comprising a well chamber, wherein a first hole is opened on the well chamber, and a cover structure is covered on the first hole; an upper drainage pipe and a lower drainage pipe are connected to the well chamber; at least two water retaining structures are arranged on the inner wall of the well chamber along its depth direction, and any two adjacent water retaining structures are staggered.
[0006] As a possible design, the water retaining structure includes a water retaining plate, and a downstream flow channel is arranged in the water retaining plate.
[0007] As a possible design, the water outlet end of the upper drainage pipe is connected to a water baffle, and a water retaining sill is arranged inside the water baffle.
[0008] As a possible design, the water retaining sill is arranged obliquely, and its high end is connected to the water outlet end of the upper drainage pipe.
[0009] As a possible design, the vertical distance between any two adjacent water retaining structures is 1500-2000 mm.
[0010] As a possible design, the cover structure includes a wellbore, a well ring, a lower well cover and an upper well cover arranged in sequence along the axial direction of the first hole, and the wellbore is connected to the first hole.
[0011] As a possible design, a support is fixed to the upper surface of the lower manhole cover, and the upper manhole cover is fixed on the support.
[0012] As a possible design, a second hole and a third hole are opened on the well chamber wall, the upper drainage pipe is sleeved in the second hole, and the lower drainage pipe is sleeved in the third hole.
[0013] As a possible design, a first gap is provided between the second hole and the upper drainage pipe, and a second gap is provided between the third hole and the lower drainage pipe.
[0014] As a possible design, a plurality of ladders and a plurality of foot recesses are provided on the inner wall of the well chamber along the depth direction thereof, and the foot recesses are provided below the ladders.
[0015] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0016] The ultra-deep inspection well disclosed by the utility model allows water to form a multi-stage waterfall in the well chamber through the water retaining plate arranged in the well chamber, which solves the limitation that the height of the waterfall is greater than 4m when the diameter of the drainage pipe is ≥300mm. In the design of outdoor drainage organization of mountain buildings, the length of the drainage network is greatly reduced, the amount of earthwork for excavation of drainage pipe trenches is reduced, the difficulty of excavating trenches under roads is avoided, the hidden dangers of road safety are reduced, and project investment is saved. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:
[0018] Figure 1 It is a top view of an embodiment of an ultra-deep inspection well for outdoor drainage of mountain buildings according to the utility model;
[0019] Figure 2 This is an AA cross-sectional view of an embodiment of the utility model of an ultra-deep inspection well for outdoor drainage of mountain buildings;
[0020] Figure 3 It is a BB cross-sectional view of an embodiment of the utility model of an ultra-deep inspection well applied to outdoor drainage of mountain buildings.
[0021] Marks and corresponding parts names in the attached drawings:
[0022] 1-upper manhole cover, 2-lower manhole cover, 3-well ring, 4-well shaft, 5-well chamber, 6-first hole, 7-retaining wall, 8-second hole, 9-upper drainage pipe, 10-water retaining board, 11-water retaining ridge, 12-ladder, 13-foothold, 14-downstream flow channel, 15-third hole, 16-fourth hole, 17-lower drainage pipe. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.
[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.
[0026] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0028] The diameter of outdoor drainage pipes is usually ≥300mm. The drainage of each terrace must be laid along the site road. The mountain road itself is winding, resulting in a long drainage route for the pipeline network. Mountain roads are narrow, and the drainage pipeline network is laid along the road. There are many hard rock layers in the roadbed. On the basis of roadbed excavation, trenches must be excavated, which makes construction difficult and costly. There are also many manhole covers on the road. When the construction quality of pipelines and inspection wells cannot be guaranteed, the road surface will crack, the manhole rings and manhole covers will be damaged, and there are great safety hazards on the road surface.
[0029] In response to the above problems, Figure 1-3 As shown, the utility model provides an ultra-deep inspection well for outdoor drainage of mountain buildings, including a well chamber 5, a first hole 6 is opened on the well chamber 5, and a cover structure is covered on the first hole 6; an upper drainage pipe 9 and a lower drainage pipe 17 are connected to the well chamber 5; at least two water retaining structures are arranged on the inner wall of the well chamber 5 along its depth direction, and any two adjacent water retaining structures are staggered.
[0030] Generally speaking, setting up extra-deep inspection wells close to or in combination with retaining walls can reduce the difficulty and amount of excavation, and further reduce construction costs and difficulty.
[0031] A water retaining structure is set up in the well to consume the energy of water. Under the condition of meeting the drainage requirements, the drainage network route is greatly reduced, the number of pipelines is saved, the amount of earthwork for trench excavation is reduced, the project investment is saved, and the hidden dangers of road safety are effectively reduced.
[0032] In practical application, the diameter of the first hole 6 is about 700 mm.
[0033] The cover structure comprises a wellbore 4 , a well ring 3 , a lower well cover 2 and an upper well cover 1 which are sequentially arranged along the axial direction of the first hole 6 , and the wellbore 4 is connected to the first hole 6 .
[0034] In actual application, the shaft 4 and the first hole 6 can be connected to each other by cement mortar to form a whole. The shaft 4 is generally prefabricated with reinforced concrete. The well ring 3 is generally prefabricated with concrete. The shaft 4 is in the shape of a ring, about 360 mm high, about 700 mm in inner diameter, and about 950 mm in outer diameter. The well ring 3 is in the shape of a ring, about 100 mm high, about 700 mm in inner diameter, and about 950 mm in outer diameter. It should be noted that the shaft 4 and the well ring 3 have the same inner diameter and outer diameter.
[0035] A support can be arranged on the well ring 3, which is generally made of cast iron, and a lower manhole cover 2 is arranged at the lower part of the support, and an upper manhole cover 1 is arranged at the upper part. The lower manhole cover 2 is a steel grille, and the upper manhole cover 1 is made of heavy ductile iron.
[0036] like Figure 1-3 As shown, the wall of the well chamber 5 is provided with a second hole 8 and a third hole 15, the upper drainage pipe 9 is sleeved in the second hole 8, and the lower drainage pipe 17 is sleeved in the third hole 15. The second hole 8 and the third hole 15 are generally square. The side length of the second hole 8 is determined according to the upper drainage pipe 9, and is generally greater than 200 mm of the diameter of the upper drainage pipe 9. A water-expandable rubber sealing ring is provided on the outer wall of the pipe opening at the connection between the upper drainage pipe 9 and the well chamber 5, and the first gap between the upper drainage pipe 9 and the second hole 8 is filled and compacted with C20 concrete.
[0037] Generally, the distance between the third hole 15 and the bottom of the well chamber 5 is about 500 mm. The bottom of the well chamber 5 is used as a sludge sedimentation area.
[0038] The side length of the third hole 15 is determined according to the upper drainage pipe 9, which is generally 200 mm larger than the diameter of the lower drainage pipe 17. A water-swellable rubber sealing ring is provided on the outer wall of the pipe opening at the connection between the lower drainage pipe 17 and the well chamber 5. The second gap between the lower drainage pipe 17 and the third hole 15 is filled and compacted with C20 concrete.
[0039] like Figure 1-3 As shown, the water retaining structure includes a water retaining plate 10, and a downstream flow groove 14 is arranged in the water retaining plate 10. The water outlet end of the upper drainage pipe 9 is connected to the water retaining plate 10, and a water retaining sill 11 is arranged in the water retaining plate 10. The water retaining sill 11 is arranged obliquely, and its high end is connected to one side of the water outlet end of the upper drainage pipe 9.
[0040] After passing through the upper drainage pipe 9, the water flows into the first water baffle 10, and after being guided by the water retaining sill 11 in the first water baffle 10, it falls to the second water baffle 10, and is ensured to flow smoothly into the third water baffle 10 through the downstream flow groove 14, and finally flows into the lower drainage pipe 17 for discharge.
[0041] It should be noted that the water baffle 10 closest to the upper drainage pipe 9 is the first one, and the water baffle 10 closest to the lower drainage pipe 17 is the last one.
[0042] The downstream flow channel 14 is cast and smoothed with C20 concrete, and the interior is in an arc shape with a radius of 300mm. This method can ensure that the water flows smoothly in the well chamber 5, reduce the water hammer sound generated by the falling water, and reduce the noise impact on the surrounding environment. The water retaining plates 10 are alternately set downward, and the method of each layer is the same. The spacing between two adjacent layers of water retaining plates 10 is generally 1500~2000mm, and the number of settings required is determined according to the actual height difference required to fall. The drainage falls step by step in the well chamber 5 and finally falls to the bottom of the well chamber 5.
[0043] The water retaining sill 11 is made of bricks, and is built on the water retaining plate 10 along the water flow direction with a thickness of 100 mm and a height of 400 mm to guide the water flow and protect the maintenance ladder 12 from the impact of the water flow.
[0044] like Figure 1-3 As shown, a plurality of ladders 12 and a plurality of foot holes 13 are arranged on the inner wall of the well chamber 5 along the depth direction thereof, and the foot holes 13 are arranged below the ladders 12. The foot holes 13 are generally submerged by water.
[0045] In order to increase the anti-corrosion effect, the ladder 12 is generally made of ductile iron.
[0046] In actual application, if the lower drain pipe 17 needs to pass through the retaining wall 7, a fourth hole 16 can be opened on the retaining wall 7 for the lower drain pipe 17 to pass through and drain water smoothly. The gap between the lower drain pipe 17 and the fourth hole 16 can be filled and compacted with C20 concrete.
[0047] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. An ultra-deep inspection well used for outdoor drainage of mountain buildings, characterized in that: It comprises a well chamber, which is provided with a first hole, and the first hole is covered with a cover structure; the well chamber is connected with an upper drainage pipe and a lower drainage pipe; at least two water retaining structures are arranged on the inner wall of the well chamber along its depth direction, and any two adjacent water retaining structures are arranged in an alternating manner.
2. The ultra-deep inspection well for outdoor drainage of mountain buildings according to claim 1 is characterized in that: The water retaining structure comprises a water retaining plate, and a downstream flow channel is arranged in the water retaining plate.
3. The ultra-deep inspection well for outdoor drainage of mountain buildings according to claim 2 is characterized in that: The water outlet end of the upper drainage pipe is connected to a water baffle, and a water retaining ridge is arranged inside the water baffle along the water flow direction.
4. The ultra-deep inspection well for outdoor drainage of mountain buildings according to claim 3 is characterized in that: The water retaining sill is arranged obliquely, and its high end is connected to one side of the water outlet end of the upper drainage pipe.
5. The ultra-deep inspection well for outdoor drainage of mountain buildings according to claim 1 is characterized in that: The vertical distance between any two adjacent water retaining structures is 1500-2000 mm.
6. The ultra-deep inspection well for outdoor drainage of mountain buildings according to claim 1 is characterized in that: The cover structure includes a wellbore, a well ring, a lower well cover and an upper well cover which are sequentially arranged along the axial direction of the first hole, and the wellbore is connected to the first hole.
7. The ultra-deep inspection well for outdoor drainage of mountain buildings according to claim 6 is characterized in that: A support is fixed on the upper surface of the lower manhole cover, and the upper manhole cover is fixed on the support.
8. The ultra-deep inspection well for outdoor drainage of mountain buildings according to claim 1 is characterized in that: A second hole and a third hole are provided on the well chamber wall, the upper drainage pipe is sleeved in the second hole, and the lower drainage pipe is sleeved in the third hole.
9. The ultra-deep inspection well for outdoor drainage of mountain buildings according to claim 8 is characterized in that: A first gap is provided between the second hole and the upper drainage pipe, and a second gap is provided between the third hole and the lower drainage pipe.
10. The ultra-deep inspection well for outdoor drainage of mountain buildings according to any one of claims 1 to 9, characterized in that: A plurality of ladders and a plurality of foot recesses are arranged on the inner wall of the well chamber along the depth direction thereof, and the foot recesses are arranged below the ladders.