CN104613319A - Monitoring method of underground pipe crossing water area - Google Patents
Monitoring method of underground pipe crossing water area Download PDFInfo
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- CN104613319A CN104613319A CN201310540440.1A CN201310540440A CN104613319A CN 104613319 A CN104613319 A CN 104613319A CN 201310540440 A CN201310540440 A CN 201310540440A CN 104613319 A CN104613319 A CN 104613319A
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Abstract
The invention discloses a monitoring method of an underground pipe crossing a water area. The monitoring method comprises the following contents: a soil cushion layer is arranged under the underground pipe crossing the water area, and a soil covering layer is arranged on the top of the underground pipe crossing the water area; and floating objects with different marks are arranged on the soil cushion layer and the soil covering layer, and the water area crossed by the underground pipe is inspected regularly; if the floating objects are discovered on the downstream water surface, the judgment whether the pipe at the corresponding position is exposed or suspended is performed according to the different marks so as to realize effective monitoring of the underground pipe crossing the water area. The method has the characteristics of strong environmental interference resistance, easy construction and placement of monitoring objects, convenience for inspection, low cost, low one-time investment and long-time monitoring benefit. The method can be widely applied to the exposure and suspension monitoring of underground pipes crossing rivers, underground pipes crossing lakes, underground pipes crossing the southern water network and underground pipes crossing other underwater areas, and is wide in application range.
Description
Technical field
The present invention relates to the technology of exposed, the unsettled safety monitoring of a kind of submarine pipeline, and be applicable to pass through waters and the method for exposed, the unsettled safety monitoring of under ground piping of laying in heavy excavation mode in particular to a kind of.
Background technique
Laid the submarine pipeline of numerous quantity in south China river, lake, the network of rivers etc. at present, these submarine pipelines carry the vital task of conveying oil gas.But wash away impact for a long time because pipeline is subject to current, the bearing material of submarine pipeline is easily emptied, and causes the exposed, unsettled of pipeline.If can not find these exposed, unsettled points as early as possible, these parts of leaving constantly expand, and cause the fracture of pipeline possibly, explode and not only cause great economic loss to country, also cause great pollution to surrounding environment simultaneously.Therefore, exposed, the unsettled point of submarine pipeline how is found as early as possible and the length tool calculating submarine pipeline exposed, unsettled is of great significance.
Under some companies employ diver for the unsettled pipe section of easy generation both at home and abroad, water touches, and to check the unsettled situation of submarine pipeline, mainly there is following shortcoming: inefficiency, maintenance cost is increased; In the waters of more complicated, under diver, the danger of water operation is very large.
In recent years, due to the development of side-scan sonar technology, the resolution of image is greatly improved.Side scan sonar system is progressively applied in the unsettled investigation of submarine pipeline by domestic part physical prospecting expert, and they rely on working experience and the knowwhy of long term accumulation, define the methodology of oneself.Such as, but this technology also exists certain shortcoming, and cost is high, construct loaded down with trivial details, require that environmental conditions is harsh.
Summary of the invention
The object of this invention is to provide a kind ofly can monitor that submarine pipeline is exposed, the monitoring method of overhead positions and length, accurately realize monitoring that is exposed to submarine pipeline, pendulous tank, and meet the durability of actual Underwater Engineering environment to this inventive method monitoring method, the requirement of stability simultaneously.
A kind of monitoring method of passing through waters under ground piping of the present invention, comprises following content:
(1) pass through the under ground piping in waters, being pad soil layer below it, is overburden layer above.
(2) be provided with the floating debris of mark respectively at the pad soil layer of under ground piping and overburden layer, the density of described floating debris is less than the water density in passed through waters; Pass through stake for benchmark with certain end, be labeled as " wearing+S " apart from the floating debris of the pipeline place pad soil layer setting that this distance of passing through stake is S, be labeled as " putting on+S " apart from the floating debris of the pipeline overburden layer setting that this distance of passing through stake is S; Apart from this floating debris passing through the distance S pipeline place of stake by static line with fix chain in downstream water and be connected; Fixing chain is buried fixing by fixing stake.
(3) waters passed through of under ground piping described in regular visit, by the restriction of static line to floating debris, if find that the floating debris that overburden layer is arranged " puts on+S " at the downstream water surface, then makes exposed judgement to apart from passing through a S place pipeline; If find that the floating debris set by pad soil layer " wears+S " at the downstream water surface, then make the unsettled judgement of pipeline to apart from passing through a S rice pipeline, thus realize effective monitoring of passing through waters under ground piping.
In method of the present invention, in step (1), pipeline river crossing is according to its ditching system of laying, can be divided into heavy excavation method, underwater excavation groove and laying pipe line underwater.Underwater excavation groove and laying pipe line underwater are all lay under water environment, and it is not high-visible that pipe trench is laid, and is not suitable for this monitoring laying method, so the present invention is suitable for heavy excavation formula digging groove laying method under water.Heavy excavation traversing method has following features: pipe laying is carried out under water-less environment, and construction carries out middle excavation tube seat, channelling, and backfill step is high-visible.Described pad soil layer is generally mixed by sandstone and floating debris.Equally, overburden layer above general also mixing by sandstone and floating debris is formed.
In method of the present invention, the floating debris described in step (2) is by general-purpose plastics (polyethylene, polypropylene, polybutylene, polycarbonate (PC)), or engineering plastics (polyamide, ABS etc.) material is made, and the material that buoyancy is little can by synthesis hollow density domination.Floating debris color is Chinese red, yellow, white are easy to the color that patrol officer finds.Floating debris shape is that the water displacement such as spheroid, cube, cuboid are large, the shape that buoyancy is large.The magnitude setting of floating debris is determined by pipe diameter, and every meter arranges pad soil layer floating debris 1 ~ 5 and overburden layer floating debris 1 ~ 5 usually.Floating debris volume is advisable with about 40 cubic centimetres, and such floating debris can closely stablely be placed in pad soil layer and overburden layer, and when pipeline is formed exposed or unsettled owing to washing away, floating debris can depart from pad soil layer and overburden layer emerges.
According to method of the present invention, the static line of wherein said fixing floating debris is by engineering plastics (polyimide, nylon, Polyetherimide), or special engineering plastics material is made.The static line that floating debris connects is fixed on downstream with straight line parallel to be fixed on chain, and static line spacing is equal, avoids mutual winding; The length of static line is greater than the degree of depth of passing through waters, to ensure that floating debris can emerge.The effect of static line ensure floating debris can not away from the exposed area of pipeline or suspension area too far away, thus can ensure to pinpoint the problems by patrolling and examining.
The material of the fixing chain described in said method (2) is the chain that X80 steel is coated with rust proof paint outward, fixing chain is fixed on downstream by the stretching pipeline that is parallel to of fixing stake, fixing chain is greater than the depth of water to the perpendicular distance of pipeline, and guarantee that static line length is greater than the depth of water, floating debris can emerge.
Above-mentionedly in the present invention mention, the fixing stake of the fixing chain of restriction is long 1 meter of concrete cuboid, wherein 0.5 meter be embedded in pass through waters downstream under; The quantity and spacing of fixing stake will basis crossline length and determine, guarantee that confined fixing chain is firm under flow action.
In step of the present invention (3), patrol officer strengthens in flood season or rainy season and patrols and examines dynamics, canoe can be taken advantage of when patrolling and examining slowly to investigate the water surface at fixing chain downstream area, exposed, unsettled place can be determined at once according to floating debris mark if any floating debris, the repairing of timely notice relevant departments, avoid accident, reduce the loss.
Compared with prior art, method of the present invention has the following advantages:
1, be applied to by mark floating debris technological method and pass through the exposed unsettled monitoring of under ground piping, this kind of monitoring method environment resistant interference by force, by electronic equipment, that monitors is placed in construction is easy, patrols and examines conveniently and cost is low;
2, it is little that other monitoring means of comparing have one-time investment, has the feature of long term monitoring benefit.
3, the present invention monitors the high request of floating debris, static line relative production material, and design and manufacturing there is higher stability and reliability, solve the waterproof that in water, parts run under different natural condition, corrosion-resistant, these three difficult problems of stretch-proof, the user of the method can relievedly use simultaneously; Floating debris, static line, fixing stake are easily produced in batches, save cost.
4, the present invention just has static line to control the feature of floating debris, can accomplish harmful recycling of not decomposing industrial article, environmental protection.
5, the present invention is applicable to River Crossing under ground piping, Underground Crossing pipeline is passed through in lake, under ground piping is passed through in the southern network of rivers and other pass through the exposed unsettled monitoring of under ground piping under water, has wide range of applications.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the inventive method.
Fig. 2 lays sectional drawing apart from passing through S rice in the inventive method.
Fig. 3 is spherical floating debris schematic diagram.
Fig. 4 is connected and fixed chain plan view apart from passing through a S rice monitoring floating debris
In figure: 1-passes through stake; 2-submarine pipeline; The spherical floating debris of 3-(mark puts on+L); 4-sandstone; The spherical floating debris of 5-(mark puts on+S); 6-passes through stake; The spherical floating debris of 7-(mark wears+S); 8-oil gas medium; 9-fixes chain; 10-fixing stake; 11-static line.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail
In monitoring method of the present invention, be imbed along submarine pipeline length direction overburden layer together with pipeline arrange under water at pad soil layer in the process of deployment of pipeline for monitoring the floating debris of described crossing pipeline under water.Specifically, what this passed through waters under ground piping lays the overburden layer monitoring section (main test tube road is exposed) that comprises pipeline and pipeline pad soil layer monitoring section (main monitoring pipeline is unsettled).
Described method specifically comprises the steps:
A) draining, excavation is laid.Will passing through waters, to pass through with heavy excavation the method for laying emptying or in the dry season water; Pass through circuit in appointment and carry out pipeline pipe canal digging, slope retaining.
B) pad soil layer monitored space to lay.Floating debris 7 is first connected with static line 11 by pad soil layer monitoring section; The floating debris 7 connected evenly is arranged in the sandstone of pad soil layer; Need to carry out mark to floating debris 7 when laying pad soil layer monitored space, initially pass through stake 6 apart from S rice position so that distance pipe laying waters is fixing, this position floating debris 7 is labeled as " wearing+S "; Connection pad soil layer monitored space floating debris 7 static line 11 is first placed on pipe trench limit in order, carries out mark.
C) pipeline 2 hyposulculus.Pipeline is installed, align, weld, position mark under ground piping 2 position, mat soil layer monitoring section, guarantee backfill overburden layer detection zone and pad soil layer detection zone position consistency.
D) fixing stake 10, fixing chain 9 is laid.Fixing chain 9 is fixed on downstream by the stretching pipeline 2 that is parallel to of fixing stake 10, and fixing chain 9 is greater than depth of water H to the perpendicular distance of pipeline 2, and guarantee that static line 9 length is greater than depth of water H, floating debris 7 can emerge; Fixing chain 9 is fixed on sandstone face height under water by fixing stake 10 is stretching.The fixing stake 10 of the fixing chain 9 of restriction is long 1 meter of concrete cuboid, wherein 0.5 meter be embedded in pass through waters downstream under; The quantity and spacing of fixing stake 10 will basis crossing pipeline 2 length and determine, guarantee that confined fixing chain 9 is firm under flow action.
E) backfilling of pipe canal.During backfill, sandstone covers pipeline to pipeline 2 itself five/everywhere, for laying overburden layer monitored space slot milling later.
F) overburden layer monitored space lays.Floating debris 5 is first connected with static line 11 by overburden layer monitoring section; The floating debris 5 connected evenly is arranged in the sandstone of pad soil layer; Need when laying overburden layer monitored space to carry out mark to floating debris 5, initially pass through stake 6 apart from S rice position so that distance pipe laying waters is fixing, this position floating debris 5 is labeled as " putting on+S "; Connect overburden layer monitored space floating debris 5 static line 11 and be first placed on pipe trench limit in order, carry out mark.
G) static line 11 is connected with fixing chain 9.Pad soil layer is connected floating debris static line 11 with overburden layer is perpendicular to the stretching placement of fixing chain 9 and mutually leave certain distance, avoids winding.
H) backfill.Sandstone backfill pipe trench is to water-bed height.
When laying, floating debris is imbedded underground along submarine pipeline length direction pad soil layer, overburden layer together with pipeline.During use, if find floating debris at the water surface, and floating debris marking (putting on+S), exposed judgement can be made to apart from passing through stake 6 apart from S rice pipeline; If find floating debris at the water surface, and floating debris marking (wearing+S), unsettled judgement can be made to apart from passing through stake 6 apart from S rice pipeline; Thus realize monitoring the spike of submarine pipeline.The effect of this invention and benefit clear principle, technique is simple, and be applicable to industrialized mass production, measuring accuracy is high.
Embodiment 1
Waters is passed through for river width 100 meters; Waters will be passed through with the draining of heavy excavation mode; To monitor floating debris used be volume is the white spheres of 40 cubic metres, and material is general-purpose plastics polyethylene, and pad soil layer floating debris arranges span 1 meter, and it is 1 meter that overburden layer floating debris arranges span; The line of the diameter 0.1 millimeter that static line Material selec-tion engineering plastics polyimide material is made; The material of fixing chain is the chain that X80 steel is coated with rust proof paint outward; Fixing stake quantity 4.Floating debris 7 is first connected with static line 11 by pad soil layer monitoring section; The floating debris 7 connected evenly is arranged in the sandstone of pad soil layer; Need to carry out mark to floating debris 7 when laying pad soil layer monitored space, initially pass through stake 6 apart from S rice position so that distance pipe laying waters is fixing, this position floating debris 7 is labeled as " wearing+S "; Connection pad soil layer monitored space floating debris 7 static line 11 is first placed on pipe trench limit in order, carries out mark.Pipeline 2 hyposulculus.Pipeline is installed, align, weld, position mark under ground piping 2 position, mat soil layer monitoring section, guarantee backfill overburden layer monitored space and pad soil layer monitored space position consistency.Fixing chain 9 is fixed on downstream by the stretching pipeline 2 that is parallel to of fixing stake 10, and fixing chain 9 is greater than depth of water H to the perpendicular distance of pipeline 2, and guarantee that static line 11 length is greater than depth of water H, floating debris 7 can emerge; Fixing chain 9 is fixed on sandstone face height under water by fixing stake 10 is stretching.The fixing stake 10 of the fixing chain 9 of restriction is long 1 meter of concrete cuboid, wherein 0.5 meter be embedded in pass through waters downstream under; Four fixing stake 10 spacing 25 meters guarantee that confined fixing chain 9 is firm under flow action.During backfill, sandstone covers pipeline to pipeline 2 itself five/everywhere, for laying overburden layer monitored space slot milling later.
Floating debris 5 is first connected with static line 11 by overburden layer monitoring section; The floating debris 5 connected evenly is arranged in the sandstone of pad soil layer; Need when laying overburden layer monitored space to carry out mark to floating debris 5, initially pass through stake 6 apart from S rice position so that distance pipe laying waters is fixing, this position floating debris 5 is labeled as " putting on+S "; Connect overburden layer monitored space floating debris 5 static line 11 and be first placed on pipe trench limit in order, carry out mark.Static line 11 is connected with fixing chain 9.Pad soil layer is connected floating debris static line 11 with overburden layer is perpendicular to the stretching placement of fixing chain 9 and mutually leave certain distance, avoids winding.When laying, floating debris is imbedded underground with pad soil layer, overburden layer along submarine pipeline length direction together with pipeline.During use, if find floating debris at the water surface, and floating debris marking (putting on+S), exposed judgement can be made to apart from passing through stake 6 apart from S rice pipeline; If find floating debris at the water surface, and floating debris marking (wearing+S), unsettled judgement can be made to apart from passing through stake 6 apart from S rice pipeline; Thus realize monitoring the spike of submarine pipeline.The effect of this invention and benefit clear principle, technique is simple, and be applicable to industrialized mass production, measuring accuracy is high.
Claims (12)
1. pass through a monitoring method for waters under ground piping, comprise following content:
(1) pass through the under ground piping in waters, being pad soil layer below it, is overburden layer above;
(2) be provided with the floating debris of mark respectively at the pad soil layer of under ground piping and overburden layer, the density of described floating debris is less than the water density in passed through waters; Pass through stake for benchmark with certain end, be labeled as " wearing+S " apart from the floating debris of the pipeline place pad soil layer setting that this distance of passing through stake is S, be labeled as " putting on+S " apart from the floating debris of the pipeline overburden layer setting that this distance of passing through stake is S;
(3) waters passed through of under ground piping described in regular visit, if find that the floating debris that overburden layer is arranged " puts on+S " at the downstream water surface, then makes exposed judgement to apart from passing through a S place pipeline; If find that the floating debris set by pad soil layer " wears+S " at the downstream water surface, then make the unsettled judgement of pipeline to apart from passing through a S rice pipeline, thus realize effective monitoring of passing through waters under ground piping.
2. in accordance with the method for claim 1, it is characterized in that, described floating debris is connected with the fixing chain in downstream water by static line.
3. in accordance with the method for claim 2, it is characterized in that, described fixing chain is buried fixing by fixing stake.
4. in accordance with the method for claim 1, it is characterized in that, the under ground piping passing through waters in step (1) by heavy excavation formula under water digging groove lay.
5. according to the method described in claim 1 or 4, it is characterized in that, described pad soil layer is mixed by sandstone and floating debris; Described overburden layer is made up of sandstone and floating debris mixing.
6. in accordance with the method for claim 1, it is characterized in that, described floating debris is made up of general-purpose plastics or engineering plastics; General-purpose plastics is selected from one group of material of polyethylene, polypropylene, polybutylene, polycarbonate (PC) formation, and engineering plastics are selected from polyamide or ABS plastic.
7. in accordance with the method for claim 1, it is characterized in that, described floating debris color is Chinese red, yellow or white.
8. in accordance with the method for claim 1, it is characterized in that, the shape of described floating debris is spheroid, cube or cuboid.
9. in accordance with the method for claim 1, it is characterized in that, described floating debris is arranged at pad soil layer and overburden layer respectively according to the quantity of every meter of distribution 1 ~ 5.
10. in accordance with the method for claim 2, it is characterized in that, the static line of described fixing floating debris is made up of engineering plastics or special engineering plastics material.
11. in accordance with the method for claim 2, it is characterized in that, described static line is fixed on downstream with straight line parallel to be fixed on chain, and static line spacing is equal, avoids mutual winding; The length of static line is greater than the degree of depth of passing through waters, to ensure that floating debris can emerge.
12. in accordance with the method for claim 2, it is characterized in that, the material of described fixing chain is the chain that X80 steel is coated with rust proof paint outward, fixing chain is fixed on downstream by the stretching pipeline that is parallel to of fixing stake, fixing chain is greater than the depth of water to the perpendicular distance of pipeline, guarantee that static line length is greater than the depth of water, floating debris can emerge.
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| CN201310540440.1A CN104613319B (en) | 2013-11-05 | 2013-11-05 | Monitoring method of underground pipe crossing water area |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU977897A1 (en) * | 1979-04-16 | 1982-11-30 | Институт горного дела им.А.А.Скочинского | Apparatus for detecting soil wash-out locations over mine pipeline |
| RU95105650A (en) * | 1995-04-13 | 1997-03-10 | Научно-исследовательский и проектный институт "Севернипигаз" | Method of repair of sagging and washed-out sections of underwater pipe line |
| CN200975609Y (en) * | 2006-09-29 | 2007-11-14 | 淄博思科光电科技有限公司 | Detection device for underground pipe leak |
| CN102261518A (en) * | 2010-05-24 | 2011-11-30 | 中国石油天然气集团公司 | Restoration construction method for in-service oil gas pipeline which encounters with collapse and destruction of worked-out section |
| CN102345793A (en) * | 2010-07-28 | 2012-02-08 | 中国石油天然气股份有限公司 | Method and system for monitoring oil-gas pipeline in mining subsidence area and system constructing method |
-
2013
- 2013-11-05 CN CN201310540440.1A patent/CN104613319B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU977897A1 (en) * | 1979-04-16 | 1982-11-30 | Институт горного дела им.А.А.Скочинского | Apparatus for detecting soil wash-out locations over mine pipeline |
| RU95105650A (en) * | 1995-04-13 | 1997-03-10 | Научно-исследовательский и проектный институт "Севернипигаз" | Method of repair of sagging and washed-out sections of underwater pipe line |
| CN200975609Y (en) * | 2006-09-29 | 2007-11-14 | 淄博思科光电科技有限公司 | Detection device for underground pipe leak |
| CN102261518A (en) * | 2010-05-24 | 2011-11-30 | 中国石油天然气集团公司 | Restoration construction method for in-service oil gas pipeline which encounters with collapse and destruction of worked-out section |
| CN102345793A (en) * | 2010-07-28 | 2012-02-08 | 中国石油天然气股份有限公司 | Method and system for monitoring oil-gas pipeline in mining subsidence area and system constructing method |
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