CN111021508A - Underground drainage pipeline construction process - Google Patents
Underground drainage pipeline construction process Download PDFInfo
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- CN111021508A CN111021508A CN201911295444.1A CN201911295444A CN111021508A CN 111021508 A CN111021508 A CN 111021508A CN 201911295444 A CN201911295444 A CN 201911295444A CN 111021508 A CN111021508 A CN 111021508A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/46—Foundations for supply conduits or other canals
Abstract
The invention discloses a construction process of underground drainage pipelines, which relates to the technical field of pipeline construction and comprises the following steps: s100, measuring and paying off; s200, well point installation; s300, excavating a groove; s400, pipeline concrete foundation; s500, installing a pipeline; s600, backfilling a pipeline; the method mainly adopts mechanical soil excavation and adopts a manual assistance method. When the machine is dug to be 30-40 cm away from the bottom of the tank, the slope is repaired manually, and the residual soil at the bottom of the tank is cleaned, so that the machine is prevented from being over-dug and the undisturbed soil is disturbed; the man-machine excavation proportion is 20: 80, the invention has simple and convenient construction, lower construction difficulty and greatly shortened construction influence time, and simultaneously has less damage to the original structure, higher reliability of the integral connection structure, strong pipeline sealing property and less influence on the structure safety.
Description
Technical Field
The invention relates to the technical field of pipeline construction, in particular to a construction process of underground drainage pipelines.
Background
Urban drainage can be divided into several aspects such as domestic sewage, industrial wastewater and atmospheric precipitation, and the urban drainage system needs to collect and convey in time to thoroughly discharge sewage and precipitation, and if the operations are not effectively realized, accumulated water is easily generated, so that daily production and life of urban residents are influenced. Underground drainage pipelines in municipal engineering construction are high in investment, so that the construction and management are very important to be carried out based on various technical requirements.
Because pipeline construction is located in urban areas, the construction space is limited, however, in the prior art, when a drainage pipeline is laid, a groove needs to be dug, meanwhile, slope relief is carried out to ensure the stability of the groove, and the occupied space is large; meanwhile, steel sheet pile supporting needs to be carried out on the groove, construction is complicated, the construction period is greatly prolonged, and therefore improvement is needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the underground drainage pipeline construction process which has the advantages of shortening the construction period and improving the construction efficiency.
In order to achieve the purpose, the invention provides the following technical scheme:
the underground drainage pipeline construction process is characterized by comprising the following steps: the method comprises the following steps:
s100, measurement and paying-off: a professional measuring person carries out measurement control and pile crossing procedures of the leveling points with a surveying unit, the measuring person is organized in time to carry out retest on the leveling points and the wire points after pile crossing, and the road center, the rain and sewage pipeline center and the temporary leveling point are guided and measured;
s200, well point installation: well point construction must be carried on according to the operating rule strictly, while the well casing is installed, according to the original ground elevation measured, confirm the rational buried depth, use the herringbone derrick mast to hang the long squirt gun to punch a hole, the squirt gun must be vertical, the hole of preventing collapsing;
s300, trench excavation: a method of mainly mechanical soil excavation and manually assisting is adopted; when the machine is dug to be 30-40 cm away from the bottom of the tank, the slope is repaired manually, the residual soil at the bottom of the tank is cleaned, so that the machine is prevented from over-digging and disturbing the original soil, and the man-machine soil digging proportion is 20: 80, stacking earthwork at a position more than 1.5 meters away from the edge of the groove;
s400, pipeline concrete foundation: after the height is measured again and the height is accepted, foundation construction is carried out, the well foundation and the pipeline foundation are poured simultaneously, the concrete is vibrated and compacted, the templates are subjected to centralized processing, on-site splicing and short steel pipe supporting; measuring the position of the large end of the prestressed pipe by using a ruler, emptying concrete at the large end during pouring, and pouring a pipe seat after the pipeline is stably installed;
s500, installing a pipeline: when the prestressed pipe is installed, a 3T winch is adopted to pull the prestressed pipe to be in place, the winch is arranged on the top of the first section of pipe in advance and is firmly fixed by a steel wire rope, when the prestressed pipe is installed, a socket and a spigot of the pipe are cleaned up by using a brush, soapy water is coated on the socket for lubrication, a rubber ring is sleeved at a position 2-3cm in front of a spigot platform after being lubricated by the soapy water, a specially assigned person is assigned to command the crane and the winch to pull, and the force for pulling the winch is uniform;
s600, backfilling a pipeline: which comprises the following steps:
s601, removing sundries in the groove before backfilling, and pumping accumulated water in the groove to ensure the backfilling of the dry groove;
s602, manually tamping the chest part and the pipe top of the pipeline within 50cm in layers, wherein each layer is no more than 20cm, the pipe top is tamped by a vibration compactor within 50cm to 2 m, the pipe top is pushed by a bulldozer to the surface of a road bed more than 2 m, and the road roller rolls layer by layer, and the thickness of each layer is no more than 30 cm; the periphery of the inspection well and other parts of the road roller which are inconvenient to roll are uniformly tamped by a vibration tamping machine along the periphery;
and S603, sampling layer by layer according to the standard requirement, and backfilling the upper soil layer after the compactness meets the requirement.
By adopting the technical scheme, mechanical excavation is matched with manual excavation, so that the construction progress is accelerated, and meanwhile, the soil at the bottom of the trench is prevented from being damaged, so that no over excavation is ensured; the well foundation and the pipeline foundation are poured simultaneously, and are compacted by concrete vibration, so that the connection stability between pipelines can be improved, and the sealing performance between the pipelines and the inspection well can be improved; the pipeline joints are moistened by using the soapy water, so that the pipelines can be conveniently butted, the operation convenience of workers is improved, and the construction progress is further accelerated; manual layering tamping is adopted during backfilling, so that the tamping degree during backfilling is improved; the vibration ramming machine is adopted to tamp the soil uniformly along the periphery so as to ensure the rolling quality of the backfill soil.
Further, after step S200, the following steps are also included:
s201, immediately discharging enough sandstone materials after the vertical pipe is arranged, sealing and filling the top of the vertical pipe with clay, tightly assembling a well point pipe and a main pipe, fastening the well point pipe and the main pipe with lead wires, and sealing the well point pipe and the main pipe with grease;
s202, after the installation is finished, water is tried to be pumped, whether air leaks from each connector or not is checked, whether the vacuum degree meets the requirement or not is checked, whether blind pipes exist in the well pipe or not is checked, and the found problems are corrected in time.
By adopting the technical scheme, the formation of the filter holes is ensured, the well point dewatering effect is ensured, and the stability of the whole construction drainage pipeline in the construction process is improved; the sealing performance of the well point pipe and the assembled main pipe is improved, the construction difficulty is reduced, the reliability of the whole connecting structure is high, the structure is not easy to crack, and the influence on the structure safety is small.
Further, the step S400 further includes the following steps: the concrete flat foundation is vibrated by a flat plate vibrator, the pipe seat is vibrated by an inserted vibrator, and the vibration is reinforced at the pipeline joint.
By adopting the technical scheme, the paving quality is effectively improved, and the concrete is ensured to be compact; meanwhile, the purpose of reducing the installation force is achieved, the manpower is reduced, and the construction progress is further shortened.
Further, after step S500, the method further includes the following steps: s501, after each section of pipeline is installed, checking the central line of the pipeline by using a theodolite in time, and then performing elevation control by using a leveling instrument.
Through adopting above-mentioned technical scheme, check the position and the intensity of pipeline, and then guarantee the stability after the drain pipe installation.
Further, after step S501, the following steps are also included: s502, injecting water into the pipeline to perform a water closing test, and simultaneously performing appearance inspection on the interface, the pipe body and the inspection well.
By adopting the technical scheme, the sealing performance of the drainage pipeline which is safely installed is ensured, and water leakage is prevented.
Further, step S502 includes the following steps: before the water closing test, the drainage pipeline is firstly filled with water for 24 hours to fully soak the pipeline, the pipeline is firstly filled with water and is closed for 20 minutes, after the water level is stably reduced, the water is closed formally, and the average value of the water level reduction in 30 minutes is calculated.
By adopting the technical scheme, the drainage pipeline is soaked firstly, the influence of self water absorption of the drainage pipeline on the sealing performance is reduced, the test closing is carried out again, the detection of the sealing performance is not influenced by the drainage pipeline, and finally, the formal water closing experiment is carried out, so that the precision is high, and the detection is accurate.
Further, after step S603, the method further includes the following steps: s604, the pipe foundation is placed on an undisturbed soil layer, if sludge or miscellaneous fill is met, the pipe foundation is removed, the overbreak depth is less than 20cm, C10 concrete is adopted for filling, if the overbreak depth is more than 20cm, 4% cement soil is adopted for filling, the backfilling range is that the outer side of the pipe foundation is 50cm respectively, and the compaction degree is not less than 95%.
By adopting the technical scheme, the pipeline is ensured not to be easily deformed by the pressure of the surrounding soil after the construction is finished, the pipeline has certain bearing capacity, the integral construction stability of the drainage pipeline is improved, and the soil layer is kept compact; after a drainage pipeline is additionally arranged and a well is repaired in construction, the site returns to the original appearance, and the use of a subsequent site is kept.
In conclusion, the invention has the following beneficial effects:
1. based on the safety of underground pipelines, the construction progress is accelerated by matching mechanical excavation with manual excavation, and meanwhile, the soil at the bottom of the groove is guaranteed not to be damaged, when the mechanical excavation is carried out, when the mechanical excavation is 30-40 cm away from the bottom of the groove, the slope is repaired manually, and the residual soil at the bottom of the groove is cleaned, so that the mechanical overexcavation is prevented, and the undisturbed soil is disturbed;
2. when the pipeline concrete foundation is built, the templates are processed in a centralized mode, spliced on site and supported by the short steel pipes, the positions of the large ends of the prestressed pipes are measured by the ruler, the concrete at the large ends is vacated during pouring, workers can install the pipeline conveniently, the convenience of operation is improved, and the stability of the pipeline after installation is high;
3. the invention has high construction process efficiency, low construction cost and quick construction progress, and has great promotion significance for improving the construction level of domestic municipal engineering.
Drawings
FIG. 1 is a process flow diagram of a construction process of an underground drainage pipeline in an embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b):
a construction process of underground drainage pipelines refers to FIG. 1, and comprises the following steps:
s100, measurement and paying-off: the professional measuring personnel can carry out measurement control and pile crossing procedures of the leveling points with a surveying unit, and the measuring personnel is timely organized to carry out retest on the leveling points and the wire points after pile crossing, and lead to measure the road center, the rain and sewage pipeline center and the temporary leveling points.
S200, well point installation: well point construction must be strictly carried out according to operation rules, when a well pipe is installed, a reasonable embedding depth is determined according to the measured original ground elevation, a herringbone derrick mast is adopted to hang a long water gun for punching, the water gun is vertical, and collapse prevention is required.
S201, immediately putting enough sandstone materials after the vertical pipe is arranged, sealing and filling the top of the vertical pipe with clay, tightly assembling a well point pipe and a main pipe, fastening the well point pipe and the main pipe with lead wires, sealing an opening with yellow oil, ensuring the formation of a filter hole, ensuring the precipitation effect of the well point and improving the stability of the whole constructed drainage pipeline in the construction process.
S202, after the installation is finished, water is tried to be pumped, whether air leaks from each connector or not is checked, whether the vacuum degree meets the requirement or not is checked, whether blind pipes exist in the well pipe or not is checked, and the found problems are corrected in time.
S300, trench excavation: a method of mainly mechanical soil excavation and manually assisting is adopted. When the machine is dug to a distance of 30-40 cm from the bottom of the groove, the slope is repaired manually, and the residual soil at the bottom of the groove is cleaned, so that the machine is prevented from over-digging and the undisturbed soil is disturbed. The man-machine excavation proportion is 20: 80, the earthwork is piled at the position beyond 1.5 meters of the groove edge, thereby quickening the construction progress, and simultaneously ensuring that the soil at the groove bottom is not damaged so as to confirm that the digging is not over-dug.
S400, pipeline concrete foundation: after the height is measured again and the inspection is qualified, foundation construction is carried out, the well foundation and the pipeline foundation are poured simultaneously, and concrete is vibrated compactly, so that the connection stability between pipelines can be improved, the sealing performance between the pipelines can be improved, and the sealing performance between the pipelines and the inspection well can be improved; the template is processed in a centralized way, spliced on site and supported by short steel pipes. The position of the big end of the prestressed pipe is measured by a ruler, the concrete at the position is vacated during pouring, the prestressed pipe is convenient for workers to install, and the pipe seat is poured after the pipeline is stably installed. Vibrating the concrete flat foundation by adopting a flat plate vibrator, vibrating the pipe seat by using an inserted vibrator, and reinforcing vibration at the pipeline joint; the paving quality is effectively improved, and the compactness of concrete is ensured; meanwhile, the purpose of reducing the installation force is achieved, the manpower is reduced, and the construction progress is further shortened.
S500, installing a pipeline: when the prestressed pipe is installed, a 3T winch is adopted to pull the prestressed pipe to be in place, the winch is arranged on the top of the first section of pipe in advance and is firmly fixed by a steel wire rope, and when the prestressed pipe is installed, the bellmouth and the socket of the pipe are cleaned up by using a brush and are lubricated by applying soap water, so that the butt joint between the pipes is facilitated, the operation convenience of workers is improved, and the construction progress is further accelerated. The rubber ring is lubricated by soap water and then sleeved at a position 2-3cm in front of the jack platform, and a specially assigned person is responsible for commanding the crane and the winch to pull, wherein the pulling force of the winch needs to be uniform. The rubber ring is ensured to be closely matched with the pipeline interface without distortion.
S501, after each section of pipeline is installed, checking the central line of the pipeline by using a theodolite in time, then performing elevation control by using a leveling instrument, checking the position and the strength of the pipeline, and further ensuring the stability of the installed drainage pipe.
S502, injecting water into the pipeline to perform a water closing test, and simultaneously performing appearance inspection on the port, the pipe body and the inspection well, wherein before the water closing test, the drainage pipeline is firstly filled with water for 24 hours to fully soak the pipeline, firstly, the water is firstly added for trial closing for 20 minutes, after the water level is stably reduced, formal water closing is performed, and the water level reduction average value of 30 minutes is calculated, so that the influence of water absorption of the drainage pipeline on the sealing performance is reduced, the detection of the sealing performance is not influenced by the drainage pipeline, and the detection accuracy of the water closing test is improved.
S600, backfilling a pipeline: which comprises the following steps:
s601, removing sundries in the groove before backfilling, and pumping accumulated water in the groove to ensure the backfilling of the dry groove;
s602, manually ramming the chest part and the pipe top within 50cm in layers, improving the ramming degree during backfilling, wherein each layer is not more than 20cm, the pipe top is rammed within 50cm to 2 m by using a vibration rammer, the pipe top is pushed to the surface of a road bed by using a bulldozer, and the road roller rolls layer by layer, and each layer is not more than 30 cm in thickness. The periphery of the inspection well and other parts of the road roller which are inconvenient to roll are uniformly tamped by a vibration tamping machine along the periphery so as to ensure the rolling quality of the backfill soil;
s603, sampling layer by layer according to the standard requirement, and backfilling upper soil after the compactness meets the requirement;
s604, the pipe foundation is laid on an undisturbed soil layer, if sludge or miscellaneous filling soil is met, the pipe foundation is removed, the overbreak depth is less than 20cm, C10 concrete is adopted for filling, if the overbreak depth is more than 20cm, 4% cement soil is adopted for filling, the backfilling range is that the outer side of the pipe foundation is 50cm respectively, and the compaction degree is not less than 95%; after the construction is finished, the pipeline is not easy to deform under the pressure of the surrounding soil, the pipeline has certain bearing capacity, the integral construction stability of the drainage pipeline is improved, and the soil layer is kept compact; after a drainage pipeline is additionally arranged and a well is repaired in construction, the site returns to the original appearance, and the use of a subsequent site is kept.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (7)
1. The underground drainage pipeline construction process is characterized by comprising the following steps: the method comprises the following steps:
s100, measurement and paying-off: a professional measuring person carries out measurement control and pile crossing procedures of the leveling points with a surveying unit, the measuring person is organized in time to carry out retest on the leveling points and the wire points after pile crossing, and the road center, the rain and sewage pipeline center and the temporary leveling point are guided and measured;
s200, well point installation: well point construction must be carried on according to the operating rule strictly, while the well casing is installed, according to the original ground elevation measured, confirm the rational buried depth, use the herringbone derrick mast to hang the long squirt gun to punch a hole, the squirt gun must be vertical, the hole of preventing collapsing;
s300, trench excavation: a method of mainly mechanical soil excavation and manually assisting is adopted; when the machine is dug to be 30-40 cm away from the bottom of the tank, the slope is repaired manually, the residual soil at the bottom of the tank is cleaned, so that the machine is prevented from over-digging and disturbing the original soil, and the man-machine soil digging proportion is 20: 80, stacking earthwork at a position more than 1.5 meters away from the edge of the groove;
s400, pipeline concrete foundation: after the height is measured again and the height is accepted, foundation construction is carried out, the well foundation and the pipeline foundation are poured simultaneously, the concrete is vibrated and compacted, the templates are subjected to centralized processing, on-site splicing and short steel pipe supporting; measuring the position of the large end of the prestressed pipe by using a ruler, emptying concrete at the large end during pouring, and pouring a pipe seat after the pipeline is stably installed;
s500, installing a pipeline: when the prestressed pipe is installed, a 3T winch is adopted to pull the prestressed pipe to be in place, the winch is arranged on the top of the first section of pipe in advance and is firmly fixed by a steel wire rope, when the prestressed pipe is installed, a socket and a spigot of the pipe are cleaned up by using a brush, soapy water is coated on the socket for lubrication, a rubber ring is sleeved at a position 2-3cm in front of a spigot platform after being lubricated by the soapy water, a specially assigned person is assigned to command the crane and the winch to pull, and the force for pulling the winch is uniform;
s600, backfilling a pipeline: which comprises the following steps:
s601, removing sundries in the groove before backfilling, and pumping accumulated water in the groove to ensure the backfilling of the dry groove;
s602, manually tamping the chest part and the pipe top of the pipeline within 50cm in layers, wherein each layer is no more than 20cm, the pipe top is tamped by a vibration compactor within 50cm to 2 m, the pipe top is pushed by a bulldozer to the surface of a road bed more than 2 m, and the road roller rolls layer by layer, and the thickness of each layer is no more than 30 cm; the periphery of the inspection well and other parts of the road roller which are inconvenient to roll are uniformly tamped by a vibration tamping machine along the periphery;
and S603, sampling layer by layer according to the standard requirement, and backfilling the upper soil layer after the compactness meets the requirement.
2. The underground drainage pipeline construction process according to claim 1, wherein: the method also comprises the following steps after the step S200:
s201, immediately discharging enough sandstone materials after the vertical pipe is arranged, sealing and filling the top of the vertical pipe with clay, tightly assembling a well point pipe and a main pipe, fastening the well point pipe and the main pipe with lead wires, and sealing the well point pipe and the main pipe with grease;
s202, after the installation is finished, water is tried to be pumped, whether air leaks from each connector or not is checked, whether the vacuum degree meets the requirement or not is checked, whether blind pipes exist in the well pipe or not is checked, and the found problems are corrected in time.
3. The underground drainage pipeline construction process according to claim 1, wherein: the step S400 further includes the steps of: the concrete flat foundation is vibrated by a flat plate vibrator, the pipe seat is vibrated by an inserted vibrator, and the vibration is reinforced at the pipeline joint.
4. The underground drainage pipeline construction process according to claim 1, wherein: the method also comprises the following steps after the step S500: s501, after each section of pipeline is installed, checking the central line of the pipeline by using a theodolite in time, and then performing elevation control by using a leveling instrument.
5. The underground drainage pipeline construction process according to claim 4, wherein: the following steps are also included after step S501: s502, injecting water into the pipeline to perform a water closing test, and simultaneously performing appearance inspection on the interface, the pipe body and the inspection well.
6. The underground drainage pipe construction process according to claim 5, wherein: step S502 further includes the following steps: before the water closing test, the drainage pipeline is firstly filled with water for 24 hours to fully soak the pipeline, the pipeline is firstly filled with water and is closed for 20 minutes, after the water level is stably reduced, the water is closed formally, and the average value of the water level reduction in 30 minutes is calculated.
7. The underground drainage pipeline construction process according to claim 1, wherein: the following steps are also included after step S603: s604, the pipe foundation is placed on an undisturbed soil layer, if sludge or miscellaneous fill is met, the pipe foundation is removed, the overbreak depth is less than 20cm, C10 concrete is adopted for filling, if the overbreak depth is more than 20cm, 4% cement soil is adopted for filling, the backfilling range is that the outer side of the pipe foundation is 50cm respectively, and the compaction degree is not less than 95%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111473160A (en) * | 2020-05-21 | 2020-07-31 | 浙江世润建创科技发展有限公司 | Mounting structure and construction method for emptying pipe at bottom of pool |
| CN114108776A (en) * | 2021-12-23 | 2022-03-01 | 北京城建集团有限责任公司 | Sewage pipeline construction method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090003885A (en) * | 2007-07-05 | 2009-01-12 | 한국가스공사 | Sinking method for pipe |
| CN101565964A (en) * | 2009-05-25 | 2009-10-28 | 青岛恒生源集团建设有限公司 | Construction method for mounting outdoor embedded high-density polyethylene double-wall corrugated drain pipe |
| CN101851929A (en) * | 2010-05-17 | 2010-10-06 | 中铁二十局集团有限公司 | Multi-stage light well point dewatering construction process for Yellow River flood plain bearing platform construction |
| CN103031850A (en) * | 2013-01-08 | 2013-04-10 | 中铁上海工程局有限公司 | Low-permeability sludge claypan ultra-vacuum dual-pipe unwatering well and construction technology |
| CN104762982A (en) * | 2015-03-06 | 2015-07-08 | 中建三局第一建设工程有限责任公司 | Construction method of watery red sandstone geological underground water level control |
| CN105625445A (en) * | 2014-11-06 | 2016-06-01 | 五冶集团上海有限公司 | Foundation pit dewatering method in coastal sandy soil region |
| US20170101775A1 (en) * | 2015-10-13 | 2017-04-13 | Bryan White | Coated Concrete Form |
| CN106978843A (en) * | 2017-04-25 | 2017-07-25 | 杭州之江市政建设有限公司 | Municipal drainage pipeline construction technology |
| CN109424054A (en) * | 2017-09-05 | 2019-03-05 | 成都美吉房地产营销策划有限公司 | The technique constructed in construction to storm sewer |
-
2019
- 2019-12-16 CN CN201911295444.1A patent/CN111021508A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090003885A (en) * | 2007-07-05 | 2009-01-12 | 한국가스공사 | Sinking method for pipe |
| CN101565964A (en) * | 2009-05-25 | 2009-10-28 | 青岛恒生源集团建设有限公司 | Construction method for mounting outdoor embedded high-density polyethylene double-wall corrugated drain pipe |
| CN101851929A (en) * | 2010-05-17 | 2010-10-06 | 中铁二十局集团有限公司 | Multi-stage light well point dewatering construction process for Yellow River flood plain bearing platform construction |
| CN103031850A (en) * | 2013-01-08 | 2013-04-10 | 中铁上海工程局有限公司 | Low-permeability sludge claypan ultra-vacuum dual-pipe unwatering well and construction technology |
| CN105625445A (en) * | 2014-11-06 | 2016-06-01 | 五冶集团上海有限公司 | Foundation pit dewatering method in coastal sandy soil region |
| CN104762982A (en) * | 2015-03-06 | 2015-07-08 | 中建三局第一建设工程有限责任公司 | Construction method of watery red sandstone geological underground water level control |
| US20170101775A1 (en) * | 2015-10-13 | 2017-04-13 | Bryan White | Coated Concrete Form |
| CN106978843A (en) * | 2017-04-25 | 2017-07-25 | 杭州之江市政建设有限公司 | Municipal drainage pipeline construction technology |
| CN109424054A (en) * | 2017-09-05 | 2019-03-05 | 成都美吉房地产营销策划有限公司 | The technique constructed in construction to storm sewer |
Non-Patent Citations (1)
| Title |
|---|
| 北京市市政工程局: "《市政工程施工手册》", 31 December 1995, 中国建筑工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111473160A (en) * | 2020-05-21 | 2020-07-31 | 浙江世润建创科技发展有限公司 | Mounting structure and construction method for emptying pipe at bottom of pool |
| CN111473160B (en) * | 2020-05-21 | 2021-08-20 | 浙江世润建创科技发展有限公司 | Mounting structure and construction method for emptying pipe at bottom of pool |
| CN114108776A (en) * | 2021-12-23 | 2022-03-01 | 北京城建集团有限责任公司 | Sewage pipeline construction method |
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