CN221236072U - Concealed active precipitation system - Google Patents
Concealed active precipitation system Download PDFInfo
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- CN221236072U CN221236072U CN202323047588.XU CN202323047588U CN221236072U CN 221236072 U CN221236072 U CN 221236072U CN 202323047588 U CN202323047588 U CN 202323047588U CN 221236072 U CN221236072 U CN 221236072U
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- suction pipe
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- 238000001556 precipitation Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 238000010276 construction Methods 0.000 claims abstract description 41
- 238000005086 pumping Methods 0.000 claims abstract description 14
- 238000010521 absorption reaction Methods 0.000 claims abstract description 6
- 239000011449 brick Substances 0.000 claims abstract description 6
- 238000005253 cladding Methods 0.000 claims abstract description 3
- 210000002219 extraembryonic membrane Anatomy 0.000 claims abstract description 3
- 229920001903 high density polyethylene Polymers 0.000 claims description 4
- 239000004700 high-density polyethylene Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000003651 drinking water Substances 0.000 abstract 3
- 235000020188 drinking water Nutrition 0.000 abstract 3
- 239000010410 layer Substances 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000009435 building construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 210000004379 membrane Anatomy 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to a buried active precipitation system, which is characterized in that: including being located the blind ditch of building foundation sump pit bottom plate lower part, brick fetal membrane, lay the rubble filter layer of bottom in the blind ditch and set up the drinking-water pipe at rubble filter layer department placed in the middle, the trunk line is connected to the drinking-water pipe, the trunk line is laid along foundation sump pit structure outer wall, support stake and crown roof beam inner wall and rather than fixed, extend to the construction foundation ditch top outside, the trunk line is connected vacuum water pump, the pipe diameter of pumping water upwards makes the water absorption hole that has the multiunit to link up each other in horizontal direction and vertical direction, cladding dense mesh net on the outer wall of drinking-water pipe. The advantages are that: the water pumping pipe dewatering system is arranged at the lower part of the bottom plate of the building foundation water collecting pit, so that the blind drain is converted from passive dewatering into active water pumping, and the dewatering capacity is greatly improved. The ground power system is adopted to pump water, so that the damage to the main structure of the building is avoided, the construction quality problems such as later plugging and maintenance are reduced, and the improvement of the integral use function of the building are facilitated.
Description
Technical Field
The utility model belongs to the technical field of construction of deep foundation pit dewatering and drainage in civil construction engineering, and particularly relates to a buried active dewatering system.
Background
At present, when coping with precipitation at a relatively deep position of a geological complex and local foundation pit in the traditional construction technology, the whole construction large-area active precipitation technology or the blind drain passive precipitation technology is generally adopted, and when the large-area whole construction active precipitation technology is adopted, the precipitation effect is very obvious, and the water level elevation of the whole foundation pit can be promoted to be lowered to a target point in a short time, so that the construction operation requirement is met. However, the construction is performed by adopting a large-area precipitation manner to meet the construction requirements of the local structural part of the building, so that the cost is greatly increased, and the process increase matched with the construction is obvious, so that the construction period control and the construction cost are both unfavorable. When the passive dewatering technology for the blind ditches is adopted, a concentrated water collecting pool for communicating the relevant blind ditches is required to be arranged objectively, so that the operation range of the bottom of the foundation pit is required to be relatively loose and can be implemented, the construction environment with narrow individual construction working conditions is very unfavorable, the passive dewatering is easily limited by objective environmental factors, the whole construction plan is often influenced, and the management difficulty of construction projects is increased.
Depending on a certain construction project, the construction area of the engineering is 52045.13 square meters, and the construction is a cast-in-place concrete frame and a shear wall structure. The project is large in volume and compact in construction period, the average depth of a project foundation pit is 7 m, the deepest part of a pit in the inner pit of the foundation pit is 11 m, meanwhile, the bottom of the foundation pit is provided with dark current and more complicated geological conditions, if the conventional precipitation method is adopted for pipe well precipitation technology construction, the problem of later plugging is very likely to be caused due to the complicated geological environment, large-scale radioactive equipment is installed in the basement, the secondary stubble structure cannot be reserved on the whole large surface of the underground structure part due to the quality requirement, the one-time forming of the concrete structure is ensured, and the problem of equipment damage or abnormal operation caused by structural water seepage due to secondary stubble is avoided. Therefore, the construction of the pipe well dewatering process involves secondary sealing of the structure, and the basic requirements of a constructor on engineering quality cannot be met. When the blind drain method is adopted for dewatering, the reserved working surface at the periphery of the foundation pit in the field is very limited, so that the construction difficulty of a foundation structure is greatly increased, the drainage efficiency is quite limited by adopting a passive dewatering mode of the blind drain, if the number of the blind drains is increased to improve the drainage capacity, the construction cost is increased, the foundation bearing capacity is reduced due to a large number of blind drains, and the later quality hidden trouble is difficult to measure.
Disclosure of Invention
The utility model provides a buried active dewatering system which aims at solving the technical problems in the prior art and is capable of adjusting the structure of the dewatering system by arranging a water pumping end, promoting the conventional blind ditch passive dewatering to be an active water pumping working mode, greatly enhancing the dewatering capacity of the whole system and reducing the construction quality problems of later construction blocking, maintenance and the like.
The utility model adopts the technical proposal for solving the technical problems in the prior art that:
The buried active precipitation system is characterized in that: including the blind ditch that is located building foundation sump pit bottom plate lower part, along the brick fetal membrane that the blind ditch both sides built, lay the rubble filter layer of bottom in the blind ditch and set up at the suction pipe of rubble filter layer department in the middle of this suction pipe and the trunk line that communicates, the trunk line is laid along foundation sump pit structure outer wall, support stake (wall) and crown roof beam inner wall and rather than fixed, then extends to outside the construction foundation pit top, the trunk line end connection vacuum pump that extends to outside the construction foundation pit top and communicates the escape canal outside the construction foundation pit top through the drainage end, the radial upward symmetry of suction pipe has the water absorption hole that the multiunit link up each other in horizontal direction and vertical direction upward system, the cladding has dense mesh on the outer wall of suction pipe.
The utility model can also adopt the following technical scheme:
Preferably, the water suction pipe and the main pipeline are of HDPE material pipe structures, and the pipe diameters of the water suction pipe and the main pipeline are 50-60mm.
Preferably, the aperture of the water suction holes of the water suction pipe is 5-8mm, and the distance between the water suction holes is 15-20cm.
Preferably, the main pipeline is fixedly arranged with the crown beam inner wall, the peripheral support piles (walls) or the retaining wall of the foundation pit through the main pipeline fixing component.
The utility model has the advantages and positive effects that: by adopting the technical scheme, the dewatering system structure is adjusted by properly arranging the water suction pipe in the blind ditch at the lower part of the bottom plate of the foundation water collecting pit for construction, so that the conventional blind ditch is driven to actively pump water, and the dewatering capacity of the integral dewatering system is obviously enhanced. Because the dewatering system adopts the ground power system water pumping structure, the damage to the main structure of the building is avoided, the construction quality problems of later plugging, maintenance and the like are reduced, and the integral use function of the building is improved and improved. The precipitation system has good pertinence and singleness, the whole engineering operation efficiency is not affected by the problem of local precipitation, the system has extremely high cost control capability, and the vacuum water pump device is arranged at the top outside the foundation pit, so that the safety coefficient is higher, and the electric shock hidden danger of site construction operators is reduced. The precipitation system is suitable for engineering projects in which groundwater exists in most of foundation pit local deeper positions, and the whole process is simple and convenient to operate and easy to popularize.
Drawings
FIG. 1 is a top view of the present utility model;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
Fig. 3 is an enlarged view of the K portion of fig. 1;
FIG. 4 is a B-B cross-sectional view of FIG. 2;
FIG. 5 is a layout diagram of the utility model applied to the parallel use of multiple precipitation point pipelines.
In the figure: 1. a vacuum water pump; 2. a main pipe; 3. a crown beam; 4. a main pipe fixing assembly; 5. a water pumping pipe; 6. a gravel filter layer; 7. a dense mesh net; 8. a protective film; 9. brick moulding bed; 10. a water suction hole; 11. a drainage end; 12. a drainage ditch; 13. and supporting the pile.
Detailed Description
The present utility model will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to figures 1-5 of the drawings,
The buried active dewatering system comprises a blind ditch positioned at the lower part of a bottom plate of a foundation water collecting pit of the building construction, brick tire membranes 9 built along two sides of the blind ditch, a broken stone filter layer 6 laid at the inner bottom of the blind ditch, a water pumping pipe 5 arranged at the middle part of the broken stone filter layer and a main pipeline 2 communicated with the water pumping pipe. The main pipeline is paved along and fixed with the outer wall of the foundation water collecting well structure, the supporting piles 13 (walls) and the inner wall of the crown beam 3, and then extends out of the top of the construction foundation pit. The end part of the main pipeline extending out of the top of the construction foundation pit is connected with the vacuum water pump 1 and is communicated with the drainage ditch 12 out of the top of the construction foundation pit through the drainage end 11. The radial direction of the water suction pipe is symmetrical to the horizontal direction and the vertical direction, a plurality of groups of water suction holes 10 which are mutually communicated are formed in the radial direction of the water suction pipe, and the outer wall of the water suction pipe is coated with a dense mesh net 7.
The blind ditch adopts a buried structure, a ditch with the depth of about 30cm and the width of 45cm is dug downwards according to the precipitation position on the survival surface of a building construction foundation, and then single-layer brick tire membranes 9 with the width of 10cm are respectively built along the two sides of the ditch, so that the stability of the original soil bodies at the two sides of the blind ditch at the lower part of the water collecting well bottom plate of the building construction foundation is improved; then a 10cm thick broken stone filter layer 6 is paved at the bottom of the blind ditch.
Specifically, the water suction pipe 5 adopts an HDPE pipe structure, and the pipe diameters of the water suction pipes are all 50-60mm. Firstly, a plurality of groups of mutually communicated water absorption holes 10 are formed on the pipe wall of a water suction pipe in a radial direction symmetrically to the horizontal direction and the vertical direction, the water absorption hole diameter is 5-8mm, and the interval between the water absorption holes is 15-20cm. The length of the water pumping pipe is usually 1-1.5m, and the water pumping pipe is required to be permanently buried in the blind drain. In order to ensure the drainage effect of the integral dewatering system, the outer wall of the water pumping pipe is coated with a dense mesh net 7, and the dense mesh net 7 adopts a dense mesh net with the specification of 3000 meshes so as to prevent soil and small-size rubble from blocking the water pumping pipe. The water suction pipe wrapped with the dense mesh net is placed on the upper surface of the gravel filtering layer 6 in the middle, and then a layer of gravel filtering layer is paved on the upper portion of the water suction pipe again, so that the survival surface is consistent with the elevation of a foundation, and meanwhile, the protection film 8 is covered on the gravel filtering layer 6, so that the water suction pipe is prevented from being blocked by mortar during later construction concrete pouring.
Specifically, the main pipeline 2 adopts an HDPE pipe structure, and the pipe diameters of the main pipelines are all phi 50-60mm. The trunk line is fixedly connected with the water suction pipe 5 positioned in the blind ditch at the lower part of the base water collecting well bottom plate through the trunk line fixing component, and the trunk line fixing component comprises a clamp fixing component, angle steel and an elbow connector. When the main pipeline extends upwards along the crown beam, the main pipeline is fixedly connected with the crown beam by adopting a clamp fixing assembly; when the main pipeline is paved on the periphery of the foundation pit at the outer upper part of the foundation pit to support piles or retaining walls, angle steel is adopted to fix the main pipeline. In the main pipeline laying process, a bracket is arranged on the vertical structure support pile 13 (wall) or the crown beam 3 at the position of 1 meter in each interval for fixing, 40mm is adopted for fixing angle steel and a clamp, 40mm is adopted for fixing the angle steel, the angle steel is directly embedded into the foundation pit periphery support pile or the retaining wall through an expansion bolt, if a slope soft soil layer can directly vertically embed the angle steel by 40cm, the fixing requirement can be met, the operation is very simple and convenient, and finally, the main pipeline is directly fixed on the angle steel through the clamp for a finished product to finish laying.
Specifically, the vacuum water pump is installed, the vacuum water pump of the power device of the dewatering system is usually placed at the top of a construction foundation pit, and is close to a rain gutter or other drainage systems in a field as much as possible, so that the drainage effect is improved. The vacuum water pump and the main pipeline can be directly bound and connected generally, the concrete implementation can be carried out according to the corresponding connection mode selected in the field condition, then the pipeline of the drainage end 11 of the vacuum water pump is connected, the pipeline installation of the whole dewatering system is completed at the moment, and the continuous dewatering operation can be implemented after the power supply is connected and the debugging is correct.
If a plurality of adjacent basic water collecting wells exist, the water suction pipes 5 in the basic water collecting wells can be connected to the main pipeline 2 in parallel according to the power of the vacuum water pump, and the water suction pipes in the plurality of adjacent basic water collecting wells can be connected by adopting elbow connecting pieces through hot-melt welding, so that the purchase cost of the vacuum water pump can be reduced, and the unified management of constructors is facilitated.
The embodiments described in the drawings of the present utility model are exemplary only, and are not to be construed as limiting the utility model.
Claims (4)
1. The buried active precipitation system is characterized in that: including the blind ditch that is located building foundation sump pit bottom plate lower part, along the brick fetal membrane that the blind ditch both sides built, lay the rubble filter layer of bottom in the blind ditch and set up at the suction pipe of rubble filter layer department placed in the middle and with the trunk line of this suction pipe intercommunication, the trunk line is laid along foundation sump pit structure outer wall, support stake and crown roof beam inner wall and rather than fixed, then extends to outside the construction foundation pit top, extend to the outer trunk line end connection vacuum pump of construction foundation pit top and communicate the escape canal outside the construction foundation pit top through the drainage end, the radial upward symmetry of suction pipe has the water absorption hole that the multiunit link up each other in horizontal direction and vertical direction upward system, the cladding has the mesh net on the outer wall of suction pipe.
2. The embedded active precipitation system of claim 1, wherein: the water suction pipe and the main pipeline are of HDPE material pipe structures, and the pipe diameters of the water suction pipe and the main pipeline are 50-60mm.
3. The embedded active precipitation system of claim 1, wherein: the aperture of the water absorbing holes of the water pumping pipe is 5-8mm, and the distance between the water absorbing holes is 15-20cm.
4. The embedded active precipitation system of claim 1, wherein: the main pipeline is fixedly arranged with the crown beam inner wall of the foundation pit, the peripheral support piles or the retaining wall through the main pipeline fixing component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323047588.XU CN221236072U (en) | 2023-11-10 | 2023-11-10 | Concealed active precipitation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323047588.XU CN221236072U (en) | 2023-11-10 | 2023-11-10 | Concealed active precipitation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221236072U true CN221236072U (en) | 2024-06-28 |
Family
ID=91596710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323047588.XU Active CN221236072U (en) | 2023-11-10 | 2023-11-10 | Concealed active precipitation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221236072U (en) |
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2023
- 2023-11-10 CN CN202323047588.XU patent/CN221236072U/en active Active
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| GR01 | Patent grant |