CN111817247A - Non-excavation pipeline UHPC pipeline construction technology - Google Patents
Non-excavation pipeline UHPC pipeline construction technology Download PDFInfo
- Publication number
- CN111817247A CN111817247A CN202010697649.9A CN202010697649A CN111817247A CN 111817247 A CN111817247 A CN 111817247A CN 202010697649 A CN202010697649 A CN 202010697649A CN 111817247 A CN111817247 A CN 111817247A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- construction
- hole
- foundation pit
- uhpc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
-
- 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
-
- 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
- E02D17/18—Making embankments, e.g. dikes, dams
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
Abstract
The invention relates to a construction process of a non-excavation pipeline UHPC pipeline. The invention utilizes the matching of the ultra-high performance concrete slurry, the flexible hose and the inflatable soft bag, and can form the underground pipeline after the slurry is injected into the underground hole for maintenance and solidification after the underground hole is dug well, thereby effectively avoiding the work of migration, demolition, large excavation, backfill recovery and the like of the obstacles in the line range by the open excavation of the line foundation trench, rapidly finishing the pipeline laying on the premise of not influencing the original landform, road traffic and greening vegetation, and the whole pipeline has better wear resistance, firmness, good durability and difficult collapse and damage.
Description
Technical Field
The invention belongs to the technical field of infrastructure construction, and relates to a construction process of a non-excavation pipeline UHPC pipeline.
Background
Along with the progress of national modernization, city construction steps are faster and faster, various municipal pipelines are criss-cross and densely stacked underground, more and more municipal buildings are arranged on the ground, the road quality is deteriorated and the environment is damaged by excavation construction, meanwhile, a great deal of inconvenience is brought to life and work of people, and the construction cost is higher and higher. The trenchless technology is a new construction technology for solving the contradiction between the existing municipal facilities and the construction. The non-excavation technology is used for laying, repairing and replacing pipelines by utilizing the rock-soil drilling technology under the condition of not excavating or only excavating a small amount of operation pits, has the advantages of high efficiency, high quality, moderate cost, environmental friendliness, no influence on traffic, no environmental pollution and the like, and has short construction period, low comprehensive cost and good safety compared with an excavation method under many conditions. The method is a main means for urban municipal construction, and is widely applied to the laying of pipelines such as gas, electric power, telecommunication, cable television lines, petroleum, natural gas, heat, drainage and the like under the conditions that roads, railways, buildings, rivers are crossed, downtown areas, historic site protection areas, crop and vegetation protection areas and the like are not allowed or can not be excavated. UHPC is the short for ultra-high performance concrete, because ultra-high performance concrete has very good durability, wear-resisting, antiknock performance and is used in some special environment extensively, make the thin wall tube also have very good intensity.
Disclosure of Invention
In view of the problems in the prior art, the invention discloses a construction process of a non-excavation pipeline UHPC pipeline, which adopts the technical scheme that the construction process comprises the following steps:
the method comprises the following steps: surveying a construction site, combining construction area underground pipe network and barrier information provided by a construction unit, clearing underground pipelines, wires, cables and communication equipment of the construction area, cleaning the surfaces of a directional drilling construction pipe, a well section drilling point, a drilling point and a pipeline connecting area field, performing field leveling work, and ensuring the positioning and anchoring of a directional drilling machine;
step two: designing and laying conditions and field surveying conditions according to pipelines;
step three: before drilling, calculating the depth to be reached by a drill rod according to the bottom elevation of the pipeline required by a design drawing and the corresponding original ground elevation, and determining a directional drilling track;
step four: according to the pipeline laying design line, measuring and determining the positions of an earth entering end and an earth discharging end, a drilling machine installation center line and a position line;
step five: carrying out earthwork construction according to the measurement fixed point, excavating a pipeline soil-entering foundation pit and a pipeline soil-exiting foundation pit, and respectively arranging a working pit for temporarily storing slurry at the soil-entering end and the soil-exiting end of the directional drilling;
step six: after the drilling machine is installed, an anchor rod is used for anchoring before construction, when a soil layer is hard and dry, a straight anchor rod is used, and a spiral anchor rod is used for a relatively soft soil layer; after the drilling machine is installed, the drilling machine is tested to run, whether the axis and the gradient of the operated machine base change or not is detected, and the installation quality and the stability of the drilling machine are repeatedly and carefully checked;
step seven: starting a drilling machine, enabling a drill bit to enter a designed line from a position of a pipeline unearthed foundation pit, drilling from the position of the pipeline unearthed foundation pit, and finishing excavation of a pilot hole for pre-reaming;
step eight: after the pilot hole is excavated, taking down the drill bit and connecting the hole expanding drill bit to the drill rod, then rotating the hole expanding drill bit by the drilling machine, repeatedly operating and timely replacing the hole expanding drill bits with different sizes to complete the hole expanding work of the pilot hole until the designed hole expanding aperture is achieved;
step nine: placing the flexible hose into the hole which is subjected to hole expansion in the step eight, enabling the flexible hose to completely penetrate through the whole hole, simultaneously placing an inflatable soft bag with the same length as the flexible hose into the hose, and confirming that the wall of the flexible hose is not distorted or folded from two ends of the pipeline;
step ten: inflating the inflatable soft bag, then injecting UHPC slurry into a gap between the outer wall of the flexible hose and the inner wall of the hole, and repeatedly drawing the flexible hose in the injection process to ensure that the UHPC slurry is completely injected into the outer wall of the flexible hose;
step eleven: after grouting is completed, the inflation quantity in the inflatable soft bag is kept, the whole pipeline is kept still for maintenance, and the inflatable soft bag is removed after maintenance is completed;
step twelve: and backfilling and compacting the excavated pipeline foundation pit and the pipeline foundation pit, and recovering pavement laying.
As a preferred embodiment of the present invention, the UHPC slurry injected in step eleven has a service time of 28 days.
As a preferred scheme of the present invention, when the pipeline foundation pit and the pipeline foundation pit are excavated in step five, a pipeline foundation pit or a pipeline foundation pit must be excavated at each corner of the pipeline.
The invention has the beneficial effects that: the invention utilizes the matching of the ultra-high performance concrete slurry, the flexible hose and the inflatable soft bag, and can form the underground pipeline after the slurry is injected into the underground hole for maintenance and solidification after the underground hole is dug well, thereby effectively avoiding the work of migration, demolition, large excavation, backfill recovery and the like of the obstacles in the line range by the open excavation of the line foundation trench, rapidly finishing the pipeline laying on the premise of not influencing the original landform, road traffic and greening vegetation, and the whole pipeline has better wear resistance, firmness, good durability and difficult collapse and damage.
Detailed Description
Example 1
The invention relates to a construction process of a non-excavation pipeline UHPC pipeline, which adopts the technical scheme that the construction process comprises the following steps:
the method comprises the following steps: surveying a construction site, combining construction area underground pipe network and barrier information provided by a construction unit, clearing underground pipelines, wires, cables and communication equipment of the construction area, cleaning the surfaces of a directional drilling construction pipe, a well section drilling point, a drilling point and a pipeline connecting area field, performing field leveling work, and ensuring the positioning and anchoring of a directional drilling machine;
step two: designing and laying conditions and field surveying conditions according to pipelines;
step three: before drilling, calculating the depth to be reached by a drill rod according to the bottom elevation of the pipeline required by a design drawing and the corresponding original ground elevation, and determining a directional drilling track;
step four: according to the pipeline laying design line, measuring and determining the positions of an earth entering end and an earth discharging end, a drilling machine installation center line and a position line;
step five: carrying out earthwork construction according to the measurement fixed point, excavating a pipeline soil-entering foundation pit and a pipeline soil-exiting foundation pit, and respectively arranging a working pit for temporarily storing slurry at the soil-entering end and the soil-exiting end of the directional drilling;
step six: after the drilling machine is installed, an anchor rod is used for anchoring before construction, when a soil layer is hard and dry, a straight anchor rod is used, and a spiral anchor rod is used for a relatively soft soil layer; after the drilling machine is installed, the drilling machine is tested to run, whether the axis and the gradient of the operated machine base change or not is detected, and the installation quality and the stability of the drilling machine are repeatedly and carefully checked;
step seven: starting a drilling machine, enabling a drill bit to enter a designed line from a position of a pipeline unearthed foundation pit, drilling from the position of the pipeline unearthed foundation pit, and finishing excavation of a pilot hole for pre-reaming;
step eight: after the pilot hole is excavated, taking down the drill bit and connecting the hole expanding drill bit to the drill rod, then rotating the hole expanding drill bit by the drilling machine, repeatedly operating and timely replacing the hole expanding drill bits with different sizes to complete the hole expanding work of the pilot hole until the designed hole expanding aperture is achieved;
step nine: placing the flexible hose into the hole which is subjected to hole expansion in the step eight, enabling the flexible hose to completely penetrate through the whole hole, simultaneously placing an inflatable soft bag with the same length as the flexible hose into the hose, and confirming that the wall of the flexible hose is not distorted or folded from two ends of the pipeline;
step ten: inflating the inflatable soft bag, then injecting UHPC slurry into a gap between the outer wall of the flexible hose and the inner wall of the hole, and repeatedly drawing the flexible hose in the injection process to ensure that the UHPC slurry is completely injected into the outer wall of the flexible hose;
step eleven: after grouting is completed, the inflation quantity in the inflatable soft bag is kept, the whole pipeline is kept still for maintenance, and the inflatable soft bag is removed after maintenance is completed;
step twelve: and backfilling and compacting the excavated pipeline foundation pit and the pipeline foundation pit, and recovering pavement laying.
The maintenance time for the injected UHPC slurry in step eleven was 28 days.
And fifthly, excavating the pipeline foundation pit in the soil or the pipeline foundation pit out of the soil at each corner of the pipeline.
Components not described in detail herein are prior art.
Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes and modifications without inventive changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (3)
1. A construction process of a non-excavation pipeline UHPC pipeline is characterized by comprising the following steps:
the method comprises the following steps: surveying a construction site, combining construction area underground pipe network and barrier information provided by a construction unit, clearing underground pipelines, wires, cables and communication equipment of the construction area, cleaning the surfaces of a directional drilling construction pipe, a well section drilling point, a drilling point and a pipeline connecting area field, performing field leveling work, and ensuring the positioning and anchoring of a directional drilling machine;
step two: designing and laying conditions and field surveying conditions according to pipelines;
step three: before drilling, calculating the depth to be reached by a drill rod according to the bottom elevation of the pipeline required by a design drawing and the corresponding original ground elevation, and determining a directional drilling track;
step four: according to the pipeline laying design line, measuring and determining the positions of an earth entering end and an earth discharging end, a drilling machine installation center line and a position line;
step five: carrying out earthwork construction according to the measurement fixed point, excavating a pipeline soil-entering foundation pit and a pipeline soil-exiting foundation pit, and respectively arranging a working pit for temporarily storing slurry at the soil-entering end and the soil-exiting end of the directional drilling;
step six: after the drilling machine is installed, an anchor rod is used for anchoring before construction, when a soil layer is hard and dry, a straight anchor rod is used, and a spiral anchor rod is used for a relatively soft soil layer; after the drilling machine is installed, the drilling machine is tested to run, whether the axis and the gradient of the operated machine base change or not is detected, and the installation quality and the stability of the drilling machine are repeatedly and carefully checked;
step seven: starting a drilling machine, enabling a drill bit to enter a designed line from a position of a pipeline unearthed foundation pit, drilling from the position of the pipeline unearthed foundation pit, and finishing excavation of a pilot hole for pre-reaming;
step eight: after the pilot hole is excavated, taking down the drill bit and connecting the hole expanding drill bit to the drill rod, then rotating the hole expanding drill bit by the drilling machine, repeatedly operating and timely replacing the hole expanding drill bits with different sizes to complete the hole expanding work of the pilot hole until the designed hole expanding aperture is achieved;
step nine: placing the flexible hose into the hole which is subjected to hole expansion in the step eight, enabling the flexible hose to completely penetrate through the whole hole, simultaneously placing an inflatable soft bag with the same length as the flexible hose into the hose, and confirming that the wall of the flexible hose is not distorted or folded from two ends of the pipeline;
step ten: inflating the inflatable soft bag, then injecting UHPC slurry into a gap between the outer wall of the flexible hose and the inner wall of the hole, and repeatedly drawing the flexible hose in the injection process to ensure that the UHPC slurry is completely injected into the outer wall of the flexible hose;
step eleven: after grouting is completed, the inflation quantity in the inflatable soft bag is kept, the whole pipeline is kept still for maintenance, and the inflatable soft bag is removed after maintenance is completed;
step twelve: and backfilling and compacting the excavated pipeline foundation pit and the pipeline foundation pit, and recovering pavement laying.
2. The trenchless pipeline UHPC pipeline construction process of claim 1, wherein: the maintenance time for the injected UHPC slurry in step eleven was 28 days.
3. The trenchless pipeline UHPC pipeline construction process of claim 1, wherein: and fifthly, excavating the pipeline foundation pit in the soil or the pipeline foundation pit out of the soil at each corner of the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010697649.9A CN111817247A (en) | 2020-07-21 | 2020-07-21 | Non-excavation pipeline UHPC pipeline construction technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010697649.9A CN111817247A (en) | 2020-07-21 | 2020-07-21 | Non-excavation pipeline UHPC pipeline construction technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111817247A true CN111817247A (en) | 2020-10-23 |
Family
ID=72866443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010697649.9A Pending CN111817247A (en) | 2020-07-21 | 2020-07-21 | Non-excavation pipeline UHPC pipeline construction technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111817247A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0657773A (en) * | 1992-08-12 | 1994-03-01 | Nippon Telegr & Teleph Corp <Ntt> | Molding method of close contact type manhole duct face and duct socket for molding |
| CN105862874A (en) * | 2016-04-14 | 2016-08-17 | 浙江科技学院 | Protection method for controlling deformation of building structure close to foundation pit |
| CN107672155A (en) * | 2017-10-25 | 2018-02-09 | 鼎尚（大连）科技发展有限公司 | A kind of Pneumatic turnover equipment and renovation technique for pipeline rehabilitation |
| CN109027420A (en) * | 2018-09-07 | 2018-12-18 | 中水电第十工程局（郑州）有限公司 | A kind of municipal pipeline no-dig technique Directional Drilling construction method |
-
2020
- 2020-07-21 CN CN202010697649.9A patent/CN111817247A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0657773A (en) * | 1992-08-12 | 1994-03-01 | Nippon Telegr & Teleph Corp <Ntt> | Molding method of close contact type manhole duct face and duct socket for molding |
| CN105862874A (en) * | 2016-04-14 | 2016-08-17 | 浙江科技学院 | Protection method for controlling deformation of building structure close to foundation pit |
| CN107672155A (en) * | 2017-10-25 | 2018-02-09 | 鼎尚（大连）科技发展有限公司 | A kind of Pneumatic turnover equipment and renovation technique for pipeline rehabilitation |
| CN109027420A (en) * | 2018-09-07 | 2018-12-18 | 中水电第十工程局（郑州）有限公司 | A kind of municipal pipeline no-dig technique Directional Drilling construction method |
Non-Patent Citations (1)
| Title |
|---|
| 张耀明: "牵引法敷设HDPE双壁缠绕塑料污水管的工艺浅谈", 《西部探矿工程》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110306616B (en) | Construction method of sewage pipeline | |
| Chen et al. | Long rectangular box jacking project: a case study | |
| CN104696664A (en) | High-polymer composite grouting method for leakage and sand inrush blocking of underground pipeline | |
| Hou et al. | Excavation failure due to pipeline damage during shallow tunnelling in soft ground | |
| CN109340453A (en) | A kind of heat supply pipeline construction method | |
| CN112761188A (en) | Construction structure and construction method of concrete inverted hanging well suitable for mucky soil | |
| CN107269288A (en) | The non-explosion water mill of hard stone section push pipe bores two-way drilling construction method | |
| CN111893826A (en) | Construction method for treating roadbed damage and grouting | |
| CN110259490A (en) | A kind of Underground Subway Station construction method | |
| CN109594574A (en) | Large-scale push pipe open caisson reversed construction method based on the confined space | |
| CN110565686A (en) | Construction method for penetrating river channel under pipe gallery | |
| CN116657519A (en) | New and old combination in-situ reconstruction method for rain box culvert crossing subway station | |
| Wang | Tunnelling and technological progress in tunnelling in China | |
| CN110512594A (en) | The simple and easy method of churning driven opportunity cavity pore-forming | |
| CN111817247A (en) | Non-excavation pipeline UHPC pipeline construction technology | |
| CN110485465B (en) | Circular working well with water-rich stratum with preset pipe jacking door opening and construction method of circular working well | |
| Lunardi et al. | Brenner base tunnel & Isarco River underpass section: Several technical and operational solutions | |
| Sinna | Application of trenchless construction technology in construction of water supply and drainage in urban road construction | |
| CN110820899A (en) | Expansion pipe type pipeline updating construction method for increasing stress release hole | |
| Boon et al. | Protection of buildings and structures within the influence of tunnelling works | |
| CN214363618U (en) | Construction structure of concrete inverted hanging well suitable for mucky soil | |
| CN220204927U (en) | Joint seepage structure of dyke penetrating pipeline | |
| Conroy et al. | Installation of fiber-optic cables under flood-protection structures using horizontal directional drilling techniques | |
| Kumarasamy | Geology and Its Impact on the Construction of Singapore MRT Circle Line | |
| Goduto et al. | Design and Construction Cost of a Water Line Underneath I-75 in Bowling Green, Ohio |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201023 |