CN1262779C - Construction method for polyvinyl pipe passing through mad flat and shallow water river channel - Google Patents
Construction method for polyvinyl pipe passing through mad flat and shallow water river channel Download PDFInfo
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- CN1262779C CN1262779C CN 200410054202 CN200410054202A CN1262779C CN 1262779 C CN1262779 C CN 1262779C CN 200410054202 CN200410054202 CN 200410054202 CN 200410054202 A CN200410054202 A CN 200410054202A CN 1262779 C CN1262779 C CN 1262779C
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Abstract
The present invention discloses a construction method for polyvinyl pipelines to cross mudflats and shallow water river channels, which comprises the following steps: pipeline positions are measured and lofted, conducting wire protective piles are buried, and construction control conducting wires are formed; corresponding devices and methods are used for excavating ditches according to differences of construction positions, geological conditions and the depth of the river channels; the ditches are inspected and are trimmed under water; pipelines are laid; the pipelines are spliced; the pipelines are inspected and treated under water; pipeline ditches are backfilled; pressure of the pipelines is tested; the pipelines are flushed and disinfected. The present invention respectively uses corresponding construction methods in view of construction points of the river channels with different characteristics, fully uses the characteristics of polyethylene plastic pipe materials, and highly efficiently realizes the construction for polyethylene plastic pipelines to cross the rivers at the mudflats and the shallow water river channels.
Description
Technical field
The present invention relates to a kind of polyvinyl plastics pipeline and get over the river method of construction, particularly relate to the method for getting over the river construction at beach, marsh and place, shallow water river course polyvinyl plastics pipeline.
Background technique
The polyvinyl plastics pipeline is used on land mostly, and the river long-distance pipe is laid its difficulty of construction much larger than constructing on land more.Method of construction under different river feature, different geology, the different climatic environment is impossible duplicate, can only take suitable mutually method according to the actual conditions of job site.For lay the polyvinyl plastics pipeline at the bottom of not only dark but also wide river, river course, the method that its method of construction can be provided by the patent of invention " polyvinyl plastics pipeline length is got over the river method of construction apart from deep water " of inventor's separate case application is solved.But for the more shallow river course of those depth of waters, beach, marsh and those during along with its riverbed of tide bulge and fall and when being under water and the construction point that surfaces, at present there is not a kind of very ripe method of construction as yet, greatly limited of the application of this outstanding tubing of vinyl tube thus in above-mentioned occasion.
Summary of the invention
The purpose of this invention is to provide a kind of efficient, reliable, practical river method of construction more that is applicable to beach and place, shallow water river course polyvinyl plastics pipeline.
A kind of polyethylene pipe provided by the invention passes through the method for construction in beach and shallow water river course, is characterized in, may further comprise the steps:
A, adopt GPS navigation system, electronic tachometer and sounding machine to pipeline will through the land of place and under water primary terrain check measurement, and a setting-out is measured in the pipe position according to measurement situation and designing requirement, bury the wire-protecting stake underground, form the construction control lead;
B, adopt equipment and the method excavation groove that adapts according to the depth in different geological states of construction part and river course, specific as follows:
B-1 selects the rising tide period to adopt strand suction formula dredger to carry out channel excavation in waters, shallow water river course;
B-2 in beach and shallow water river course when ebb tide the time place, river course that surfaces, when selecting low water mark, adopt excavator to excavate out a dredger navigation channel earlier; Treat in the described dredger navigation channel after the fills with water, dig husky fluting with dredger again;
C, groove is inspected, out-of-flatness place is repaired;
D, at first at the pipeline of riverside segmented assembly welding certain-length, the pipe ends welding steel flange after described welding, the vexed plate of shutoff; Then pipeline is placed the river to float on the river surface, on pipeline, load counterweight concrete piece; Utilize subsequently that flood tide opportunity, pipeline is dragged on the groove that has excavated, cast anchor pipeline is fixed by towboat; When ebb tide, pipeline is sunk to groove, remove vexed plate, carry out flange and connect;
E, interconnect with flange and bolted method pipeline with each construction section of river course;
F, in-water survey and processing;
G, backfill pipe trench;
H, whole pipe is carried out water-filling soak, then the pressure testing pipeline section is carried out the water filling applied voltage test;
I, pipeline is carried out irrigation and disinfection.
Above-mentioned polyethylene pipe passes through the method for construction in beach and shallow water river course; wherein step a is described buries the wire-protecting stake underground; its method is: adopt the bamboo pole of respective length to insert to high-density in the water, be divided into 3 rows, respectively as pipeline reference line and boundary of works area guide line.
Above-mentioned polyethylene pipe passes through the method for construction in beach and shallow water river course, wherein the described employing excavator of step b-2 excavates the dredger navigation channel, its method is: place excavator one to be enough to carry on mud in the iron case of excavator, excavator and iron case are linked into an integrated entity, drive the iron case when making excavator rely on its grab bucket to move ahead and slide forward synchronously.
The construction point that the present invention is directed to the different characteristic river course adopts the method for construction that adapts with it respectively, has made full use of the characteristic of polyvinyl plastics tubing, has effectively realized the construction of river more of beach and place, shallow water river course polyvinyl plastics pipeline reliably; According to the construction speed needs, the grooving of the construction point in variant feature river course, pipe laying operation can walk abreast simultaneously and go into operation, so efficiency of construction is higher.
Embodiment
Further specify method of construction of the present invention below in conjunction with embodiment.
Present embodiment construction point is nearer apart from estuary, and the construction waters belongs to tidal reach, and river feature: width is 2800m, and the side bank mainly is overbank and quagmire, 80% riverbed exposure at ebb tide, maximum water depth 2.0m, flow velocity 2.1 meter per seconds; Most of top layer, river course is the thick mud of about 0.5m, below is medium sand; The most of top layer of side bank is the thick mud of about 1.0m, below is drift sand.
The pipeline of required laying is the polyvinyl plastics feedwater piping of diameter 630mm.
Present embodiment method of construction and step are as follows.
A, adopt GPS navigation system, electronic tachometer and sounding machine will check measurement through the primary terrain at place, and a setting-out is measured in the pipe position according to the measurement situation to land and submarine pipeline according to designing requirement; Bury the wire-protecting stake underground and form the construction control lead, its method is: adopt the bamboo pole of respective length to insert to high-density in the water, be divided into 3 rows, respectively as pipeline reference line and boundary of works area guide line.
B, difference construction point is adopted equipment and the method excavation groove that adapts with it according to the diverse situation of river feature, specific as follows:
In the waters, river course, because water level is more shallow, it is easily stranded to inhale large junk during ebb tide, so select the rising tide period, the employing ability to work is 200m
3The strand of/h is inhaled the formula dredger and is carried out the channel excavation operation.
The place that does not have now during with morning and evening tides in overbank, quagmire and the riverbed of side bank when selecting low water mark, adopts excavator to excavate out the dredger navigation channel earlier, can work simultaneously by many excavators in case of necessity; Because excavator can't move ahead in mud and it is sunken to become silted up easily,, again excavator and iron case are linked into an integrated entity so a special iron case places excavator in this iron case that is enough to carrying excavator on mud; Be positioned at ditch alveolobasilar line one side with the iron case during excavator work, the mud that digs places by the iron case; When excavator need move ahead, during the grab bucket of excavator is grabbed deeply and buried, with the active force on ground excavator and iron case are slided synchronously forward by grab bucket.After finish in the dredger navigation channel, after treating that flood tide period tidewater filling with the navigation channel, dig husky fluting with dredger.
C, the groove of part in the waters inspected by water under the diver, fluctuating is arranged, adopt high pressure water gun to fill up under water or wash away by the diver, to guarantee the piping erection quality as groove.
D, first at the about 200 meters pipeline of riverside segmented assembly weld length, the pipe ends welding steel flange after described welding, the vexed plate of shutoff; Send in the river with the crane pipeline that welding is good subsequently, allow it swim on the river surface; On pipeline, adorn 1 heavily about 400 kilograms of concrete pieces every 4 meter amperes; Take advantage of after counterweight concrete piece installs flood tide opportunity, by towboat pipeline is dragged on the groove that has excavated, cast anchor pipeline fixed; When ebb tide, pipeline is sunk to groove, remove vexed plate, carry out flange and connect.
E, the pipeline section place that will connect of each construction section is measured, the butt joint pipeline is adjusted to the position, interconnect with flange and bolted method pipeline with each construction section;
F, send under the diver water that near the foundation trench the pipeline is checked, as run into the pipeline situation that is uneven, the diver will wash away the location that is uneven around the pipeline and fill up with high pressure water gun, guarantee the piping erection quality.
G, the packed yellow ground of employing carry out backfilling of pipe canal, and backfill highly is 1 meter.
H, 2800 meters whole pipe are carried out water-filling soak, pipeline soak time under working pressure is no less than 24 hours; Then the pressure testing pipeline section is carried out the water filling applied voltage test, the pressure of test is 0.8Mpa, keeps 10 minutes, and pressure gauge falls presses that to be no more than 0.05Mpa be qualified.
After the success of i, hydraulic test of pipeline, the opening controlling valve door utilizes the pressure of water in original pipeline, and pipeline is washed, and need add an amount of bleaching powder before the flushing and soak 24 hours, satisfies the potable water NBS to guarantee the water in the pipeline of flushing back.
Technical order:
Strength test: test pressure is 0.8Mpa, and the time is 10 minutes, falls and presses 0.01Mpa;
Leak test: test pressure is 0.7Mpa, and the time is 15 minutes, falls to press to be no more than 0.01Mpa.
Method of construction of the present invention is not only applicable to water supply line, can widen the construction of pipeline similar applications such as being applied to rock gas, coal gas and sewage yet.
Claims (3)
1, a kind of polyethylene pipe passes through the method for construction in beach and shallow water river course, it is characterized in that, may further comprise the steps:
A, adopt GPS navigation system, electronic tachometer and sounding machine to pipeline will through the land of place and under water primary terrain check measurement, and a setting-out is measured in the pipe position according to measurement situation and designing requirement, bury the wire-protecting stake underground, form the construction control lead;
B, adopt equipment and the method excavation groove that adapts according to the depth in different geological states of construction part and river course, specific as follows:
B-1 selects the rising tide period in waters, shallow water river course, adopts strand suction formula dredger to carry out channel excavation;
B-2 in beach and shallow water river course when ebb tide the time place, river course that surfaces, when selecting low water mark, adopt excavator to excavate out a dredger navigation channel earlier; Treat in the described dredger navigation channel after the fills with water, dig husky fluting with dredger again;
C, groove is inspected, out-of-flatness place is repaired;
D, at first at the pipeline of riverside segmented assembly welding certain-length, the pipe ends welding steel flange after described welding, the vexed plate of shutoff; Then pipeline is placed the river to float on the river surface, on pipeline, load counterweight concrete piece; Utilize subsequently that flood tide opportunity, pipeline is dragged on the groove that has excavated, cast anchor pipeline is fixed by towboat; When ebb tide, pipeline is sunk to groove, remove vexed plate, carry out flange and connect;
E, interconnect with flange and bolted method pipeline with each construction section of river course;
F, in-water survey and processing;
G, backfill pipe trench;
H, whole pipe is carried out water-filling soak, then the pressure testing pipeline section is carried out the water filling applied voltage test;
I, pipeline is carried out irrigation and disinfection.
2, polyethylene pipe according to claim 1 passes through the method for construction in beach and shallow water river course; it is characterized in that; step a is described to bury the wire-protecting stake underground; its method is: adopt the bamboo pole of respective length to insert in the water to high-density; be divided into 3 rows, respectively as pipeline reference line and boundary of works area guide line.
3, polyethylene pipe according to claim 1 passes through the method for construction in beach and shallow water river course, it is characterized in that, the described employing excavator excavation of step b-2 dredger navigation channel, its method is: place excavator one to be enough to carry on mud in the iron case of excavator, excavator and iron case are linked into an integrated entity, drive the iron case when making excavator rely on its grab bucket to move ahead and slide forward synchronously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410054202 CN1262779C (en) | 2004-09-02 | 2004-09-02 | Construction method for polyvinyl pipe passing through mad flat and shallow water river channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410054202 CN1262779C (en) | 2004-09-02 | 2004-09-02 | Construction method for polyvinyl pipe passing through mad flat and shallow water river channel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1587770A CN1587770A (en) | 2005-03-02 |
| CN1262779C true CN1262779C (en) | 2006-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200410054202 Expired - Fee Related CN1262779C (en) | 2004-09-02 | 2004-09-02 | Construction method for polyvinyl pipe passing through mad flat and shallow water river channel |
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| CN (1) | CN1262779C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994279B (en) * | 2014-04-29 | 2016-01-06 | 中国石油化工股份有限公司 | Dark mud is fish pond pipeline mounting construction method in flakes |
| CN106885047A (en) * | 2017-02-23 | 2017-06-23 | 苏州建设监理有限公司 | Outdoor water supply pipe road is installed by detection construction method |
| CN112253848B (en) * | 2020-10-19 | 2022-04-12 | 中石化石油工程技术服务有限公司 | Sand geology water network swamp area pipeline construction method |
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- 2004-09-02 CN CN 200410054202 patent/CN1262779C/en not_active Expired - Fee Related
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