CN114855846A - Underground seepage-proofing pressure-reducing anti-floating blind pipe structure and construction method thereof - Google Patents
Underground seepage-proofing pressure-reducing anti-floating blind pipe structure and construction method thereof Download PDFInfo
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- 238000007667 floating Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 115
- 239000004746 geotextile Substances 0.000 claims abstract description 57
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 239000002689 soil Substances 0.000 claims description 16
- 239000004927 clay Substances 0.000 claims description 15
- 239000004575 stone Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000011449 brick Substances 0.000 claims description 9
- 239000004567 concrete Substances 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 claims description 5
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- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
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- 238000002844 melting Methods 0.000 claims description 3
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- 238000000465 moulding Methods 0.000 claims description 3
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- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 3
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
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Abstract
The invention is suitable for the technical field of seepage-proofing and pressure-reducing construction, and discloses an underground seepage-proofing and pressure-reducing anti-floating blind pipe structure and a construction method, wherein the blind pipe structure comprises a base surface (1), a foundation pit (2) is arranged inside the base surface (1), waterproof geotextile (3) covers the inside of the foundation pit (2), a liquid seepage drainage pipe (4) is arranged at the bottom end of the foundation pit (2), liquid seepage holes (5) are uniformly distributed around the liquid seepage drainage pipe (4), and water seepage geotextile (6) wraps the outside of the liquid seepage drainage pipe (4); gravel (9) is backfilled in the foundation pit (2), and water seepage geotextile (6) covers the gravel (9). The seepage drainage pipe is buried in the construction foundation pit, the measures are safe, reliable and strong in controllability, the static water pressure is utilized for drainage, and the seepage drainage pipe has the characteristics of economy, energy conservation and environmental protection and is an indispensable part in green buildings.
Description
Technical Field
The invention belongs to the technical field of seepage-proofing and pressure-reducing of building construction, and particularly relates to an underground seepage-proofing and pressure-reducing anti-floating blind pipe structure and a construction method thereof.
Background
At present, along with the annual improvement of the urbanization level of China, underground structure buildings are more and more, so that the burial depth of the foundation of a high-rise building and a multi-rise building is increased, just because the burial depth of the foundation is correspondingly increased, multi-rise underground water-bearing layers always appear in the deep foundation, because the water-bearing layers in a soil structure are easy to cut off, the actual construction difficulty caused by the water seepage of a foundation pit is caused, and the underground structure is corroded by underground water for a long time, the leakage is easy to generate, the service life is shortened, so the long-term effect of the anti-seepage decompression on the basement is paid high attention; the basement structure is of a floating-free design, the floor area of the basement is larger than that of an upper building tower, so that the upper part of a part of the basement does not have enough building quality to be pressed and floated, and in order to solve the problems, an underground seepage-proofing pressure-reducing floating-resistant blind pipe structure and a construction method thereof are provided.
Disclosure of Invention
The invention provides an underground seepage-proofing pressure-reducing anti-floating blind pipe structure and a construction method thereof, which solve the problems in the background art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a subsurface seepage-proofing, pressure-reducing and anti-floating blind pipe structure comprises a base surface, wherein a foundation pit is arranged inside the base surface, waterproof geotextile covers the inside of the foundation pit, a seepage drainage pipe is arranged at the bottom end of the foundation pit, seepage holes are uniformly distributed around the seepage drainage pipe, and seepage geotextile covers the outside of the seepage drainage pipe; and gravel is backfilled in the foundation pit, and water seepage geotextile covers the gravel.
Further, the aperture of the liquid seepage hole is 20 mm.
Furthermore, the waterproof geotextile is provided with flanges at two sides of the foundation pit, and the length of the flanges is not less than 100 mm.
Further, the lap joint length of the water seepage geotextile on the liquid seepage calandria is not less than 200 mm.
Furthermore, the lapping length of the water-permeable geotextile on the macadam and the waterproof geotextile at the edge of the foundation pit is not less than 100 mm; and backfilling the upper surface of the water-permeable geotextile with clay.
Further, waterproof geotechnical cloth and infiltration geotechnical cloth are green polypropylene fibre geotechnical cloth, and are 3mm thick.
Furthermore, the weeping calandria is made of PE pipes with three specifications, and the pipe diameters are DN200, DN315 and DN400 respectively.
The construction method of the underground seepage-proofing pressure-reducing anti-floating blind pipe structure is characterized by comprising the following steps of: the method comprises the following steps: firstly, preparing a water permeable PE pipe wrapped by water permeable geotextile → secondly positioning and lofting → thirdly digging and digging a groove → thirdly cleaning the bottom of the groove → thirdly laying waterproof geotextile → sixthly backfilling a gravel cushion layer → seventhly placing a hose → eighthly backfilling a filter material → niner sealing the water permeable geotextile →
Backfilling and tamping clay;
specifically, 1, burying a blind pipe:
1) the embedding depth is calculated according to the slope breaking direction of a plane arrangement diagram, brick built hidden falling wells are arranged at the positions of local beam bottom penetrating positions and high and low steps, brick built hidden wells are arranged at the corners and the intersections of pipelines, the embedding depth of a drainage blind pipe at the back of an outer wall of the basement is not less than 0.6m lower than the bottom plate of the basement, the lines are laid on the basement according to the position and the size of the blind pipe, then trench earthwork is dug, and the bottom of the trench is backfilled with lime soil and a slope is found;
2) trimming the trench wall according to the width of the blind pipe for molding, laying waterproof geotextile along the trench bottom, and enabling the lengths of the flanges at two sides to be not less than 100 mm;
3) the PE pipes are connected in a hot melting mode, the positions, corresponding to the holes, of the PE pipes are connected, after the connection is completed, the permeable PE pipes processed by the holes are wrapped by water permeable geotextile, and the lap joint length is not less than 200 mm;
4) the groove is backfilled by graded broken stones, after the groove is backfilled, the top of the groove is covered with a layer of water-permeable geotextile, the lap joint length of the water-permeable geotextile and the waterproof geotextile is not less than 100mm, and then the upper clay is backfilled;
2. and (3) water seepage and drainage layer:
1) for the structure with the reinforced concrete bottom plate, firstly, a bottom water seepage layer is made, and then a main body structure and a vertical wall water seepage and drainage layer are constructed; if no bottom plate is provided, after the main structure is constructed, a bottom and vertical wall seepage and drainage layer is constructed;
2) paving and filling the seepage and drainage layers in layers, wherein the thickness of each layer is not more than 300mm, and carefully tamping by using a flat vibrator;
3) when the water collecting pipe is paved and filled with stones slightly larger than the water seepage holes, when a concrete pipe or a clay pipe with the length of 500-700 mm and without holes is paved, a gap of 10-15 mm is reserved between the end parts of the pipes so as to facilitate water seepage into the pipes; the water collecting pipe and the drainage ditch have the gradient not less than 1%;
4) when backfilling, carefully tamping the soil layer by using a tamping machine; adopting a brick wall as a waterproof layer for protecting the outer part of the shear wall, and backfilling clay once when the shear wall is built to be lm high;
5) when in construction, the water level is reduced to be below the water filtering layer, the water filtering layer cannot be made in muddy water, and the constructed seepage and drainage system is kept smooth.
Further, there are two methods for draining water: one is that the water seepage layer is made into 1% gradient, set up concrete cushion and infiltration wall and escape canal between water seepage layer and soil body, the inside does not have water-collecting pipes, the water flows to the sump pit through the blind pipe of drainage, reuse the water pump to pump away; one is that there is no concrete cushion layer between the water seepage layer and the soil body, there is a water collecting well inside, the underground water flows into the nearby deep sewer well or the water pump pit inside the structure depending on the self gradient of the water seepage layer and the water collecting blind pipe, and then is pumped away.
Compared with the prior art, the invention has the beneficial effects that:
1. the seepage drainage pipe is buried in the construction foundation pit, the measures are safe, reliable and strong in controllability, the static water pressure is utilized for drainage, and the seepage drainage pipe has the characteristics of economy, energy conservation and environmental protection and is an indispensable part in green buildings.
2. The invention reduces the underground water level for a long time through the liquid-seepage calandria, ensures the construction soil to be dry, prevents the underground water from generating buoyancy on the basement bottom plate and prevents a large amount of drainage contained in the soil layer from being discharged, and the liquid-seepage calandria can meet the requirements of construction and play a role of precipitation in the service life of buildings, thereby really realizing the permanent combination.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a weep drain of the present invention;
FIG. 3 is a sectional view A-A of FIG. 2;
FIG. 4 is a schematic diagram of an anti-migration block according to the present invention;
FIG. 5 is a process flow diagram of the present invention.
In the figure: 1. a base surface; 2. a foundation pit; 3. waterproof geotextile; 4. liquid seepage calandria; 5. a weep hole; 6. water seepage geotextile; 7. an anti-offset block; 8. stabilizing the nail head; 9. and (4) crushing the stones.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed; the types of the electrical appliances provided in the present invention are only references, and different types of electrical appliances with the same function can be replaced according to actual use conditions, and for those skilled in the art, the specific meaning of the above terms in the present invention can be understood in specific situations.
Example 1: referring to fig. 1-3, an underground seepage-proofing, pressure-reducing and anti-floating blind pipe structure comprises a base surface 1, wherein a foundation pit 2 is formed inside the base surface 1, waterproof geotextile 3 covers the inside of the foundation pit 2, a liquid seepage drainage pipe 4 is arranged at the bottom end of the foundation pit 2, seepage holes 5 are uniformly distributed around the liquid seepage drainage pipe 4, and water seepage geotextile 6 wraps the outside of the liquid seepage drainage pipe 4; broken stones 9 are filled in the foundation pit 2, and water-permeable geotextile 6 covers the broken stones 9;
the aperture of the liquid seepage hole 5 is 20 mm;
the waterproof geotextile 3 is provided with flanges at two sides of the foundation pit 2, and the length of the flanges is not less than 100 mm;
the lapping length of the water seepage geotextile 6 on the liquid seepage calandria 4 is not less than 200 mm;
the lapping length of the water-permeable geotextile 6 on the broken stone 9 and the waterproof geotextile 3 at the edge of the foundation pit 2 is not less than 100 mm; and the upper surface of the water-permeable geotextile 6 is backfilled with clay;
the waterproof geotextile 3 and the water-permeable geotextile 6 are green polypropylene geotextiles and have the thickness of 3 mm;
the weeping calandria 4 is made of PE pipes with three specifications and models, and the pipe diameters are DN200, DN315 and DN400 respectively.
Example 2: referring to fig. 1-4, the structure is the same as that of embodiment 1, further, a group of anti-deviation blocks 7 are respectively disposed on two sides of the weeping drain pipe 4 at the bottom end of the foundation pit 2, and the bottom ends of the anti-deviation blocks 7 are uniformly distributed and fixed with stable nail heads 8; the top of the anti-deviation block 7 is in a circular arc shape.
When in use: when the seepage calandria 4 is installed, the seepage calandria 4 reduces the underground water level and the horizontal thrust of water pressure to underground buildings, firstly the anti-deviation block 7 is placed at the position where the seepage calandria 4 needs to be installed, the stable nail head 8 at the bottom end of the anti-deviation block 7 is inserted into the bottom of the foundation pit 2 to form a stable placing effect, the seepage calandria 4 is placed at the top of the two anti-deviation blocks 7, thereby facilitating the rapid limit installation of the seepage calandria 4, in the water seepage process, water enters the seepage holes 5 through the seepage geotextile 6 and then enters the seepage calandria 4 to form underground water for recycling, the construction water cost of the project is reduced, and meanwhile, the buoyancy effect of the underground water contained in the soil layer on the bottom plate is reduced, the drainage device works in a stratum with abundant underground water, guides the underground water, ensures that soil is relatively dry, is beneficial to construction operation, and is convenient for carrying out efficient drainage effect on underground seepage water.
Referring to fig. 5, the construction method of the underground impermeable decompression anti-floating blind pipe structure comprises the following steps: firstly, preparing a water permeable PE pipe wrapped by water permeable geotextile → secondly positioning and lofting → thirdly digging and digging a groove → thirdly cleaning the bottom of the groove → thirdly laying waterproof geotextile → sixthly backfilling a gravel cushion layer → seventhly placing a hose → eighthly backfilling a filter material → niner sealing the water permeable geotextile →
Backfilling and tamping clay;
specifically, 1, burying a blind pipe:
1) the embedding depth is calculated according to the slope breaking direction of a plane arrangement diagram, brick built hidden falling wells are arranged at the positions of local beam bottom penetrating positions and high and low steps, brick built hidden wells are arranged at the corners and the intersections of pipelines, the embedding depth of a drainage blind pipe at the back of an outer wall of the basement is not less than 0.6m lower than the bottom plate of the basement, the lines are laid on the basement according to the position and the size of the blind pipe, then trench earthwork is dug, and the bottom of the trench is backfilled with lime soil and a slope is found;
2) trimming the trench wall according to the width of the blind pipe for molding, laying waterproof geotextile along the trench bottom, and enabling the lengths of the flanges at two sides to be not less than 100 mm;
3) the PE pipes are connected in a hot melting mode, the positions, corresponding to the holes, of the PE pipes are connected, after the connection is completed, the permeable PE pipes processed by the holes are wrapped by water permeable geotextile, and the lap joint length is not less than 200 mm;
4) the groove is backfilled by graded broken stones, after the groove is backfilled, the top of the groove is covered with a layer of water-permeable geotextile, the lap joint length of the water-permeable geotextile and the waterproof geotextile is not less than 100mm, and then the upper clay is backfilled;
2. and (3) water seepage and drainage layer:
1) for the structure with the reinforced concrete bottom plate, firstly, a bottom water seepage layer is made, and then a main body structure and a vertical wall water seepage and drainage layer are constructed; if no bottom plate is provided, after the main structure is constructed, a bottom and vertical wall seepage and drainage layer is constructed;
2) paving and filling the seepage and drainage layers in layers, wherein the thickness of each layer is not more than 300mm, and carefully tamping by using a flat vibrator;
3) when the water collecting pipe is paved and filled with stones slightly larger than the water seepage holes, when a concrete pipe or a clay pipe with the length of 500-700 mm and without holes is paved, a gap of 10-15 mm is reserved between the end parts of the pipes so as to facilitate water seepage into the pipes; the water collecting pipe and the drainage ditch have the gradient not less than 1%;
4) when backfilling, carefully tamping in layers by using a tamping machine; adopting a brick wall as a waterproof layer for protecting the outer part of the shear wall, and backfilling clay once when the shear wall is built to be lm high;
5) when in construction, the water level is reduced to be below the water filtering layer, the water filtering layer cannot be made in muddy water, and the constructed seepage and drainage system is kept smooth.
Further, there are two methods for draining water: one is that the water seepage layer is made into 1% gradient, set up the concrete cushion and infiltration wall and escape canal between water seepage layer and soil body, the inside does not have water-collecting pipes, the water flows to the sump pit through the blind pipe of drainage, reuse the water pump to take away; one method is that no concrete cushion layer is arranged between the water seepage layer and the soil body, a water collecting well is arranged in the water seepage layer, underground water flows into a nearby deeper underground water well or a water pump pit in a structure by depending on the gradient of the water seepage layer and a water collecting blind pipe and is pumped away, and the filtered underground water is recycled by the two methods, so that the construction water cost of the project is reduced.
Application example:
the invention is applied to the construction project (first stage) of the modern cold chain logistics center in the west of copper kernel, and thoroughly solves the problem of water consumption in field construction by using the anti-seepage pressure-reducing blind pipe backflow technology and matching with a bright point water-saving measure of a box culvert water-collecting well, thereby greatly saving the water consumption for construction and saving a large amount of construction cost, according to the measurement and calculation of the construction water consumption of the project, the water consumption for field construction is at least about 50 tons every day, the water consumption can be saved by about 1.8 ten thousand tons in the whole construction period, and the saving cost is about 12.6 ten thousand yuan. The method has the advantages of obtaining good evaluation and quality assurance through detection of relevant departments and personnel, being convenient to construct and operate, having simple structure, realizing green construction and environmental protection, effectively improving the dirty, messy, poor and messy social image of building construction, establishing good social image, being beneficial to obtaining social support, ensuring the smooth proceeding of various works of engineering construction, even obtaining market favor, being easy to popularize and use and obtaining good social benefit and economic benefit.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The utility model provides an anti blind pipe structure that floats of underground prevention of seepage decompression, includes base plane (1), its characterized in that: a foundation pit (2) is formed in the base surface (1), waterproof geotextile (3) covers the foundation pit (2), a liquid seepage drainage pipe (4) is placed at the bottom end of the foundation pit (2), liquid seepage holes (5) are uniformly distributed around the liquid seepage drainage pipe (4), and water seepage geotextile (6) wraps the outside of the liquid seepage drainage pipe (4); gravel (9) is backfilled in the foundation pit (2), and water seepage geotextile (6) covers the gravel (9).
2. The underground seepage-proofing, pressure-reducing and anti-floating blind pipe structure according to claim 1, characterized in that: the aperture of the liquid seepage hole (5) is 20 mm.
3. The underground seepage-proofing, pressure-reducing and anti-floating blind pipe structure according to claim 1, characterized in that: the waterproof geotextile (3) is provided with flanges at two sides of the foundation pit (2), and the length of the flanges is not less than 100 mm.
4. The underground impermeable decompression anti-floating blind pipe structure according to claim 1, characterized in that: the lapping length of the water seepage geotextile (6) on the seepage drainage pipe (4) is not less than 200 mm.
5. The underground seepage-proofing, pressure-reducing and anti-floating blind pipe structure according to claim 1, characterized in that: the lapping length of the water-permeable geotextile (6) on the broken stone (9) and the waterproof geotextile (3) at the edge of the foundation pit (2) is not less than 100 mm; and the upper surface of the water permeable geotextile (6) is backfilled with clay.
6. The underground seepage-proofing, pressure-reducing and anti-floating blind pipe structure according to claim 1, characterized in that: waterproof geotechnique cloth (3) and infiltration geotechnique cloth (6) are green polypropylene fibre geotechnique's cloth, and are thick 3 mm.
7. The underground seepage-proofing, pressure-reducing and anti-floating blind pipe structure according to claim 1, characterized in that: the liquid seepage calandria (4) is made of PE pipes with three specifications, and the pipe diameters are DN200, DN315 and DN400 respectively.
8. The construction method of the underground seepage-proofing, pressure-reducing and anti-floating blind pipe structure according to one of claims 1 to 7, characterized by comprising the following steps: the method comprises the following steps: firstly, preparing a permeable PE pipe wrapped by permeable geotextile → secondly, positioning and lofting → thirdly, digging a groove → fourthly, cleaningDitch arranging bottom → laying waterproof geotextile → backfilling gravel cushion layer → placing hose → backfilling filter material → sealing drainage geotextile → water filtering
Backfilling and tamping clay;
specifically, 1, burying a blind pipe:
1) the embedding depth is calculated according to the slope breaking direction of a plane arrangement diagram, brick built hidden falling wells are arranged at the positions of local beam bottom penetrating positions and high and low steps, brick built hidden wells are arranged at the corners and the intersections of pipelines, the embedding depth of a drainage blind pipe at the back of an outer wall of the basement is not less than 0.6m lower than the bottom plate of the basement, the lines are laid on the basement according to the position and the size of the blind pipe, then trench earthwork is dug, and the bottom of the trench is backfilled with lime soil and a slope is found;
2) trimming the trench wall according to the width of the blind pipe for molding, laying waterproof geotextile along the trench bottom, and enabling the lengths of the flanges at two sides to be not less than 100 mm;
3) the PE pipes are connected in a hot melting mode, the positions, corresponding to the holes, of the PE pipes are connected, after the connection is completed, the permeable PE pipes processed by the holes are wrapped by water permeable geotextile, and the lap joint length is not less than 200 mm;
4) the groove is backfilled by graded broken stones, after the groove is backfilled, the top of the groove is covered with a layer of water-permeable geotextile, the lap joint length of the water-permeable geotextile and the waterproof geotextile is not less than 100mm, and then the upper clay is backfilled;
2. and (3) water seepage and drainage layer:
1) for the structure with the reinforced concrete bottom plate, firstly, a bottom water seepage layer is made, and then a main body structure and a vertical wall water seepage and drainage layer are constructed; if no bottom plate is provided, after the main structure is constructed, a bottom and vertical wall seepage and drainage layer is constructed;
2) spreading and filling the water seepage and drainage layers layer by layer, wherein the thickness of each layer is not more than 300mm, and carefully tamping by using a flat vibrator;
3) when the water collecting pipe is paved and filled with stones slightly larger than the water seepage holes, when a concrete pipe or a clay pipe with the length of 500-700 mm and without holes is paved, a gap of 10-15 mm is reserved between the end parts of the pipes so as to facilitate water seepage into the pipes; the water collecting pipe and the drainage ditch have the gradient not less than 1%;
4) when backfilling, carefully tamping the soil layer by using a tamping machine; adopting a brick wall as a waterproof layer for protecting the outer part of the shear wall, and backfilling clay once when the shear wall is built to be lm high;
5) when in construction, the water level is reduced to be below the water filtering layer, the water filtering layer cannot be made in muddy water, and the constructed seepage and drainage system is kept smooth.
9. The construction method of the underground impermeable decompression anti-floating blind pipe structure according to claim 8, characterized in that: the water seepage and drainage have two methods: one is that the water seepage layer is made into 1% gradient, set up the concrete cushion and infiltration wall and escape canal between water seepage layer and soil body, the inside does not have water-collecting pipes, the water flows to the sump pit through the blind pipe of drainage, reuse the water pump to take away; one is that there is no concrete cushion layer between the water seepage layer and the soil body, there is a water collecting well inside, the underground water flows into the nearby deeper sewer well or the water pump pit inside the structure depending on the self gradient of the water seepage layer and the water collecting blind pipe, and then is pumped away.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115559404A (en) * | 2022-12-06 | 2023-01-03 | 福建省地质工程勘察院 | Construction process and equipment for flexible drainage system of high-fill slope engineering berm |
| CN117418895A (en) * | 2023-11-23 | 2024-01-19 | 中山大学 | Semi-assembled open cut tunnel water-proof and drainage system and construction method thereof |
Citations (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08199660A (en) * | 1995-01-25 | 1996-08-06 | Fujita Corp | Unit osmos tube |
| KR20020000318A (en) * | 2000-06-23 | 2002-01-05 | 오시덕 | Method of horizontal drainage for pore water pumping of soft ground improvement |
| CN102051885A (en) * | 2009-10-27 | 2011-05-11 | 江苏建业建设集团有限公司 | Process for absorbing and discharging water under deep foundation concrete |
| RU2424401C1 (en) * | 2010-06-17 | 2011-07-20 | Федеральное государственное образовательное учреждение высшего профессионального образования "Орловский государственный аграрный университет" (ФГОУ ВПО Орел ГАУ) | Drain of closed type |
| CN202157440U (en) * | 2011-08-05 | 2012-03-07 | 深圳市居众装饰设计工程有限公司 | Structure of sedimentation pond for preventing sedimentation and preventing water from leaking out of crack |
| CN103147453A (en) * | 2013-03-22 | 2013-06-12 | 中交第一公路勘察设计研究院有限公司 | Cutoff and drainage system for permafrost tunnel edge and heading slope and cutting slope and construction method thereof |
| CN203488208U (en) * | 2013-09-28 | 2014-03-19 | 中铁二十局集团第二工程有限公司 | Drainage system in tunnel hole |
| KR20150065475A (en) * | 2013-12-05 | 2015-06-15 | 한국도로공사 | Side gutter for mountain ridge and construction method |
| CN104712000A (en) * | 2015-03-24 | 2015-06-17 | 中船第九设计研究院工程有限公司 | Pressure reduction and water drainage system under ultra-deep underground space structure bottom plate |
| CN105201002A (en) * | 2015-10-23 | 2015-12-30 | 金磐集团有限公司 | Underground structure seepage drainage system and construction method thereof |
| CN205152970U (en) * | 2015-10-23 | 2016-04-13 | 金磐集团有限公司 | Underground structure oozes drainage system |
| CN206530363U (en) * | 2016-08-30 | 2017-09-29 | 中铁二院工程集团有限责任公司 | One kind can the outer drainage system of maintenance type railway tunnel bottom structure |
| CN206538789U (en) * | 2017-03-02 | 2017-10-03 | 同济大学建筑设计研究院(集团)有限公司 | A kind of pipe gallery |
| CN107445422A (en) * | 2017-08-03 | 2017-12-08 | 山东建筑大学 | A kind of pollution of river bed mud ecological restoring method |
| CN207362970U (en) * | 2017-08-28 | 2018-05-15 | 中国建筑第二工程局有限公司 | A kind of concave herbaceous field structure |
| CN108625403A (en) * | 2018-02-12 | 2018-10-09 | 中铁十八局集团有限公司 | A kind of basement bottom board uses the pre- anti-seep water construction method of blind pipe guide |
| CN109099213A (en) * | 2018-09-27 | 2018-12-28 | 江苏清源管道技术有限公司 | A kind of vacuum pipe anti-corrosive apparatus and construction technology |
| CN110439082A (en) * | 2019-07-10 | 2019-11-12 | 江苏大学 | A kind of backfill structure and construction method suitable for underground piping vibration isolation |
| CN210886972U (en) * | 2019-07-22 | 2020-06-30 | 中冶天工集团有限公司 | Blind drain infiltration pipe |
| CN211172034U (en) * | 2019-10-29 | 2020-08-04 | 中铁二局第一工程有限公司 | Water-rich basement falls drainage structures |
| CN111535369A (en) * | 2020-05-28 | 2020-08-14 | 中冶天工集团有限公司 | Anti-floating fixer for blind pipe and anti-floating construction process using same |
| CN211257027U (en) * | 2019-07-30 | 2020-08-14 | 瑞洲建设集团有限公司 | Drainage blind ditch at bottom of foundation pit |
| CN112523270A (en) * | 2020-12-09 | 2021-03-19 | 深圳市天健(集团)股份有限公司 | Anti-floating blind ditch for deep foundation pit in water-rich area and construction process thereof |
| CN112523272A (en) * | 2020-12-09 | 2021-03-19 | 深圳市天健(集团)股份有限公司 | Anti-floating blind ditch for strongly weathered rock stratum and construction method thereof |
| CN112709250A (en) * | 2020-12-24 | 2021-04-27 | 西京学院 | Be favorable to reducing seabed vacuum pipeline pile foundation cushion cap structure of buoyancy |
| CN213086883U (en) * | 2020-08-18 | 2021-04-30 | 浙江绿城建筑设计有限公司 | Buoyancy control structure of underground building |
| CN112746624A (en) * | 2020-12-22 | 2021-05-04 | 中铁九局集团第二工程有限公司 | Novel comprehensive water lowering and draining method and device for mudstone subway station |
| CN214090013U (en) * | 2020-12-09 | 2021-08-31 | 深圳市天健(集团)股份有限公司 | Anti blind ditch that floats to deep basal pit in rich water area |
| CN113718808A (en) * | 2021-07-23 | 2021-11-30 | 新城控股集团实业发展有限公司 | Precipitation structure for preventing underground structure from floating and construction method thereof |
| CN218175929U (en) * | 2022-06-08 | 2022-12-30 | 贵州建工兴印建筑工程有限公司 | Underground anti-seepage pressure-reducing anti-floating blind pipe structure |
-
2022
- 2022-06-08 CN CN202210640540.0A patent/CN114855846A/en active Pending
Patent Citations (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08199660A (en) * | 1995-01-25 | 1996-08-06 | Fujita Corp | Unit osmos tube |
| KR20020000318A (en) * | 2000-06-23 | 2002-01-05 | 오시덕 | Method of horizontal drainage for pore water pumping of soft ground improvement |
| CN102051885A (en) * | 2009-10-27 | 2011-05-11 | 江苏建业建设集团有限公司 | Process for absorbing and discharging water under deep foundation concrete |
| RU2424401C1 (en) * | 2010-06-17 | 2011-07-20 | Федеральное государственное образовательное учреждение высшего профессионального образования "Орловский государственный аграрный университет" (ФГОУ ВПО Орел ГАУ) | Drain of closed type |
| CN202157440U (en) * | 2011-08-05 | 2012-03-07 | 深圳市居众装饰设计工程有限公司 | Structure of sedimentation pond for preventing sedimentation and preventing water from leaking out of crack |
| CN103147453A (en) * | 2013-03-22 | 2013-06-12 | 中交第一公路勘察设计研究院有限公司 | Cutoff and drainage system for permafrost tunnel edge and heading slope and cutting slope and construction method thereof |
| CN203488208U (en) * | 2013-09-28 | 2014-03-19 | 中铁二十局集团第二工程有限公司 | Drainage system in tunnel hole |
| KR20150065475A (en) * | 2013-12-05 | 2015-06-15 | 한국도로공사 | Side gutter for mountain ridge and construction method |
| CN104712000A (en) * | 2015-03-24 | 2015-06-17 | 中船第九设计研究院工程有限公司 | Pressure reduction and water drainage system under ultra-deep underground space structure bottom plate |
| CN105201002A (en) * | 2015-10-23 | 2015-12-30 | 金磐集团有限公司 | Underground structure seepage drainage system and construction method thereof |
| CN205152970U (en) * | 2015-10-23 | 2016-04-13 | 金磐集团有限公司 | Underground structure oozes drainage system |
| CN206530363U (en) * | 2016-08-30 | 2017-09-29 | 中铁二院工程集团有限责任公司 | One kind can the outer drainage system of maintenance type railway tunnel bottom structure |
| CN206538789U (en) * | 2017-03-02 | 2017-10-03 | 同济大学建筑设计研究院(集团)有限公司 | A kind of pipe gallery |
| CN107445422A (en) * | 2017-08-03 | 2017-12-08 | 山东建筑大学 | A kind of pollution of river bed mud ecological restoring method |
| CN207362970U (en) * | 2017-08-28 | 2018-05-15 | 中国建筑第二工程局有限公司 | A kind of concave herbaceous field structure |
| CN108625403A (en) * | 2018-02-12 | 2018-10-09 | 中铁十八局集团有限公司 | A kind of basement bottom board uses the pre- anti-seep water construction method of blind pipe guide |
| CN109099213A (en) * | 2018-09-27 | 2018-12-28 | 江苏清源管道技术有限公司 | A kind of vacuum pipe anti-corrosive apparatus and construction technology |
| CN110439082A (en) * | 2019-07-10 | 2019-11-12 | 江苏大学 | A kind of backfill structure and construction method suitable for underground piping vibration isolation |
| CN210886972U (en) * | 2019-07-22 | 2020-06-30 | 中冶天工集团有限公司 | Blind drain infiltration pipe |
| CN211257027U (en) * | 2019-07-30 | 2020-08-14 | 瑞洲建设集团有限公司 | Drainage blind ditch at bottom of foundation pit |
| CN211172034U (en) * | 2019-10-29 | 2020-08-04 | 中铁二局第一工程有限公司 | Water-rich basement falls drainage structures |
| CN111535369A (en) * | 2020-05-28 | 2020-08-14 | 中冶天工集团有限公司 | Anti-floating fixer for blind pipe and anti-floating construction process using same |
| CN213086883U (en) * | 2020-08-18 | 2021-04-30 | 浙江绿城建筑设计有限公司 | Buoyancy control structure of underground building |
| CN112523270A (en) * | 2020-12-09 | 2021-03-19 | 深圳市天健(集团)股份有限公司 | Anti-floating blind ditch for deep foundation pit in water-rich area and construction process thereof |
| CN112523272A (en) * | 2020-12-09 | 2021-03-19 | 深圳市天健(集团)股份有限公司 | Anti-floating blind ditch for strongly weathered rock stratum and construction method thereof |
| CN214090013U (en) * | 2020-12-09 | 2021-08-31 | 深圳市天健(集团)股份有限公司 | Anti blind ditch that floats to deep basal pit in rich water area |
| CN112746624A (en) * | 2020-12-22 | 2021-05-04 | 中铁九局集团第二工程有限公司 | Novel comprehensive water lowering and draining method and device for mudstone subway station |
| CN112709250A (en) * | 2020-12-24 | 2021-04-27 | 西京学院 | Be favorable to reducing seabed vacuum pipeline pile foundation cushion cap structure of buoyancy |
| CN113718808A (en) * | 2021-07-23 | 2021-11-30 | 新城控股集团实业发展有限公司 | Precipitation structure for preventing underground structure from floating and construction method thereof |
| CN218175929U (en) * | 2022-06-08 | 2022-12-30 | 贵州建工兴印建筑工程有限公司 | Underground anti-seepage pressure-reducing anti-floating blind pipe structure |
Non-Patent Citations (1)
| Title |
|---|
| 勇纯利: "市政工程监理细节100", vol. 978, 中国建材工业出版社, pages: 237 - 238 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115559404A (en) * | 2022-12-06 | 2023-01-03 | 福建省地质工程勘察院 | Construction process and equipment for flexible drainage system of high-fill slope engineering berm |
| CN117418895A (en) * | 2023-11-23 | 2024-01-19 | 中山大学 | Semi-assembled open cut tunnel water-proof and drainage system and construction method thereof |
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