CN104612240A - Method for blocking large-pipe-diameter rainwater pipeline through short air bag - Google Patents
Method for blocking large-pipe-diameter rainwater pipeline through short air bag Download PDFInfo
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- CN104612240A CN104612240A CN201410775745.5A CN201410775745A CN104612240A CN 104612240 A CN104612240 A CN 104612240A CN 201410775745 A CN201410775745 A CN 201410775745A CN 104612240 A CN104612240 A CN 104612240A
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- Prior art keywords
- heart
- capsule
- pipeline
- air bag
- losing heart
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
- E03F7/02—Shut-off devices
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a method for blocking a large-pipe-diameter rainwater pipeline through a short air bag. The method includes the following steps that firstly, the pipeline is strengthened, and a foundation pit is excavated; secondly, impurities are removed; thirdly, the short air bag is arranged, and fixing is firm; fourthly, the short air bag is connected with an air compressor; fifthly, a three-way air valve is checked; sixthly, pressurizing and inflating are conducted; seventhly, sealing is achieved; eighthly, after work is completed, the three-way air valve is adjusted, and exhausting is conducted; ninthly, the short air bag is pulled out. According to the method for blocking the large-pipe-diameter rainwater pipeline, the short air bag is used for blocking the drain pipeline, the problems that that great danger exists in the brick wall detaching work, blocked residues can be hardly removed thoroughly, rubbish mixed in fluid in the pipeline may block the pipeline, and the use safety of the pipeline is affected are solved, the purchase cost and the use cost are saved, the time cost of the construction progress is saved, various costs are reduced, the construction cost is reduced, the economic benefits are improved, underground unmanned work is achieved, the safety of workers is ensured, and the construction period is shortened.
Description
Technical field
The present invention relates to the realm of building construction, specifically refer to that a kind of use is losed heart and be encapsulated the method for stifled Large Diameter Pipeline storm sewer.
Background technology
Current Some Domestic producer has produced the air bag of applicable pipe plugging, simple to operate and cheap when adopting air bag shutoff, is therefore generally used in urban duct shutoff.But the size of Large Diameter Pipeline shutoff air bag and weight often due to too huge, add the difficulty that it is deposited, transports and uses.Pass through because shutoff relies on air bag and inner-walls of duct to combine closely to block current, after hydraulic pressure is greater than 3 meters, the frictional force between air bag and tube wall can not resist extraneous hydraulic pressure completely.Producer is in order to improve frictional force, and the length of increase shutoff air bag of having to, but long air bag, exacerbate again the difficulty of use.
Summary of the invention
It is a kind of time saving and energy saving to the object of the present invention is to provide, and cost-saving, and the use of reduction of erection time is losed heart and is encapsulated the method for stifled Large Diameter Pipeline storm sewer.
The present invention is achieved through the following technical solutions: a kind of use is losed heart and is encapsulated the method for stifled Large Diameter Pipeline storm sewer, comprises the steps:
(1) utilize steel sheet pile to carry out pipe strengthening, carry out excavation of foundation pit;
(2) open a hole foreign material within the scope of the upstream line 1 ~ 5m of room, guarantees to puncture air bag without sharp object;
(3) in the first segment pipeline of upstream, well room, arrange capsule of losing heart, inflation is held towards side, well room, capsule fixation of losing heart;
(4) lose heart capsule and air compressor is connected;
(5) check threeway blast gate, make it be in inflated condition;
(6) air compressor is started, pressurization inflation in capsule of losing heart;
(7) capsule of losing heart slowly is full of internal diameter of the pipeline after expanding, thus realizes sealing;
(8), after downstream has worked, regulate threeway blast gate, be placed on exhaust condition;
(9) by capsule rear end water body thrust of losing heart, outside capsule of losing heart pull-out well.
Its working mechanism is the feature that after utilizing airbag aeration, volume hoop evenly increases, by underground pipeline internal diameter rounding and with expand after air bag rubber outer wall produce the physical characteristic that larger frictional resistance forms flexible cock body.Air bag has fully taken into account air bag behind water pressure in use to the push effect of air bag, result of use can be reached safely after guaranteeing airbag aeration, frictional resistance after airbag aeration and between inside pipe wall is slightly larger than air bag water pressure behind, and frictional resistance surplus coefficiert deposit provides by adopting auxiliary support force.
(1) the air bag pressure (P) that produces of water pressure dorsad:
P＝ρgh
The density of ρ-water in formula;
G-constant;
The height of h-manhole and pipeline water-filling sum.
(2) air bag water pressure (F) behind:
Know according to F=PS, F=P π R
2
P-air bag pressure of producing of water pressure dorsad in formula;
R-gutter radius.
(3) frictional resistance (f) of air bag and inner-walls of duct:
f＝μ
0P
0S
μ in formula
0the friction factor of-rubber and solids, its value is 1 ~ 4;
P
0-tube wall unit area pressure and air bag allow inflation pressure;
S-air bag side developed area.
When
, air bag is in safety and stability state after inflating in pipeline.
Adopt " lose heart and be encapsulated stifled Large Diameter Pipeline storm sewer " construction, namely purchase in producer capsule of losing heart, be transported to job site, carry out cleaning to rain pipe to reinforce, adopt machinery to coordinate manpower or manpower installation in position, supplemental support is carried out to air bag, finally adopt air compressor to carry out qi of chong channel ascending adversely to air bag.
Compared with conventional pipelines shutoff, capsule of losing heart has obvious advantage: have applicability widely, and air bag plugging method is a kind of convenient, and saving of labor, timesaving preferred plan.Shutoff air bag can be widely used in waterproof test and the pipeline temporary plugging of drainage pipe, its safety, durability, practicality and recyclability be other method for blocking incomparable.
Environmental benefit is good, and air-bag method shutoff and fragment of brick blocking pipe of building a wall is compared, and can save the constructional materialss such as brick, sand, cement in a large number, can save land resources, protect farmland, decreasing pollution; Air bag plugging technology can be recycled when doing closed-water test water, thus has saved precious water resource to a great extent, and therefore, air-bag method shutoff can produce good environmental benefit.
Air bag plugging construction has and recycles performance, thus can save engineering cost.
Air bag plugging construction, compared with pipe plugging method, is constructed convenient, builds by laying bricks or stones, maintenance and dismounting operation because decreasing, and therefore programming is fast, little by factor interference such as rainfalls, thus has saved the time, ensure that total lever factor.
Remove brick wall operation and have great danger, and the legacy of shutoff is difficult to cleaning thoroughly, the rubbish thing that the fluid in pipeline is mingled with may blocking pipe, affects the use safety of pipeline.
Air bag plugging construction can realize down-hole unmanned operation, avoids the harm of the pernicious gas in pipeline to personnel, ensure that the personal safety of operating personnel to greatest extent, and eliminates and leave over abutment sequelae, is conducive to the security of operation of civilized construction and pipeline.
For realizing the inventive method better, further, in described step (2), the scope of the room upstream line that opens a hole is 2m.
For realizing the inventive method better, further, in described step (4), capsule of losing heart is reinforced and is utilized well room to fix.Capsule of losing heart reinforcing utilizes well room to fix can supplement the frictional force reduced because shortening balloon length.
For realizing the inventive method better, further, in described step (4), capsule of losing heart is reinforced and is utilized two capsules of losing heart to support.Two capsules of losing heart can supplement the frictional force reduced because shortening balloon length to support.
For realizing the inventive method better, further, described two capsules of losing heart adopt leading screw by jail, air bag top to support.
For realizing the inventive method better, further, in described step (4), lose heart between capsule with air compressor and be connected by air hose.
For realizing the inventive method better, further, capsule front end of losing heart described in is fixed with two pulling ropes.Fix two pulling ropes in capsule front end of losing heart, convenient capsule of losing heart pulls out outside well, realizes down-hole unmanned operation.
For realizing the inventive method better, further, capsule of losing heart described in is rubber pneumatic bag.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) the present invention adopts to lose heart and is encapsulated stifled gutter, avoid the operation of dismounting brick wall and there is great danger, and the legacy of shutoff is difficult to cleaning thoroughly, the rubbish thing that the fluid in pipeline is mingled with may blocking pipe, affects the use safety of pipeline;
(2) the present invention adopts to lose heart and is encapsulated stifled gutter, greatly saves purchase commodity and use cost than long balloons;
(3) the present invention takes to lose heart and is encapsulated stifled gutter, and 14 skies saved by construction speed time cost, reduces various expenses about 100,000;
(4) the present invention is to the tackling of key scientific and technical problems of deep pit digging supporting and the construction technology such as precipitation, the installation of Large Diameter Pipeline storm sewer, also serves optimized construction procedure to greatest extent, reduces construction cost, the effect of increasing economic efficiency;
(5) the method for the invention construction is used can to realize down-hole unmanned operation, avoid the harm of the pernicious gas in pipeline to personnel, ensure that the personal safety of operating personnel to greatest extent, and eliminate and leave over abutment sequelae, be conducive to the security of operation of civilized construction and pipeline;
(6) the method for the invention construction substantially reduces engineering total lever factor, decreases the interference to surrounding environment.
Detailed description of the invention
Be described below in detail embodiments of the invention, wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Embodiment described below is exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", the orientation of the instruction such as " outward " or position relationship be only the present invention for convenience of description and simplified characterization; instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", " second " only for describing object, and instruction or hint relative importance can not be interpreted as or impliedly comprise one or more these features.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Also can be directly be connected, also can be indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
Embodiment:
The present embodiment discloses a kind of use and loses heart and be encapsulated the method for stifled Large Diameter Pipeline storm sewer, mainly solve Problems existing in shutoff Large Diameter Pipeline storm sewer process, by studying the various construction methods of domestic and international drainage pipe shutoff, compare, sum up, final optimization pass has been innovated to use to lose heart and has been encapsulated the method for stifled Large Diameter Pipeline storm sewer, and concrete steps are as follows:
(1) utilize steel sheet pile to carry out pipe strengthening, carry out excavation of foundation pit;
(2) open a hole foreign material within the scope of the upstream line 2m of room, guarantees to puncture without sharp object capsule of losing heart;
(3) in the first segment pipeline of upstream, well room, arrange capsule of losing heart, inflation is held towards side, well room, capsule fixation of losing heart;
(4) lose heart capsule and air compressor is connected;
(5) check threeway blast gate, make it be in inflated condition;
(6) air compressor is started, pressurization inflation in capsule of losing heart;
(7) capsule of losing heart slowly is full of internal diameter of the pipeline after expanding, thus realizes sealing;
(8), after downstream has worked, regulate threeway blast gate, be placed on exhaust condition;
(9) by capsule rear end water body thrust of losing heart, outside capsule of losing heart pull-out well.
Wherein, capsule of losing heart reinforcing utilizes well room to fix or two capsules of losing heart use leading screws to support, lose heart between capsule with air compressor and be connected by air hose, capsule front end of losing heart is fixed with two pulling ropes, two pulling ropes are fixed in capsule front end of losing heart, convenient capsule of losing heart pulls out outside well, and realize down-hole unmanned operation, capsule of losing heart is rubber pneumatic bag.
Using loses heart is encapsulated stifled Large Diameter Pipeline storm sewer and need does accurate calculating according to the Construction Condition of reality, and design formulas is as follows:
(1) the air bag pressure (P) that produces of water pressure dorsad:
P＝ρgh
The density of ρ-water in formula;
G-constant;
The height of h-manhole and pipeline water-filling sum.
(2) air bag water pressure (F) behind:
Know according to F=PS, F=P π R
2
P-air bag pressure of producing of water pressure dorsad in formula;
R-gutter radius.
(3) frictional resistance (f) of air bag and inner-walls of duct:
f＝μ
0P
0S
μ in formula
0the friction factor of-rubber and solids, its value is 1 ~ 4;
P
0-tube wall unit area pressure and air bag allow inflation pressure;
S-air bag side developed area.
According to the design parameter of the construction plant of reality and the capsule of losing heart of use, make
, then can ensure to lose heart after capsule is inflated in pipeline is in safety and stability state.
Adopt " lose heart and be encapsulated stifled Large Diameter Pipeline storm sewer " construction, namely purchase in producer capsule of losing heart, be transported to job site, carry out cleaning to rain pipe to reinforce, adopt machinery to coordinate manpower or manpower installation in position, supplemental support is carried out to air bag, finally adopt air compressor to carry out qi of chong channel ascending adversely to air bag.
Compared with conventional pipelines shutoff, capsule of losing heart has obvious advantage: have applicability widely, and air bag plugging method is a kind of convenient, and saving of labor, timesaving preferred plan.Shutoff air bag can be widely used in waterproof test and the pipeline temporary plugging of drainage pipe, its safety, durability, practicality and recyclability be other method for blocking incomparable.
Environmental benefit is good, and air-bag method shutoff and fragment of brick blocking pipe of building a wall is compared, and can save the constructional materialss such as brick, sand, cement in a large number, can save land resources, protect farmland, decreasing pollution; Air bag plugging technology can be recycled when doing closed-water test water, thus has saved precious water resource to a great extent, and therefore, air-bag method shutoff can produce good environmental benefit.
Air bag plugging construction has and recycles performance, thus can save engineering cost.
Air bag plugging construction, compared with pipe plugging method, is constructed convenient, builds by laying bricks or stones, maintenance and dismounting operation because decreasing, and therefore programming is fast, little by factor interference such as rainfalls, thus has saved the time, ensure that total lever factor.
Remove brick wall operation and have great danger, and the legacy of shutoff is difficult to cleaning thoroughly, the rubbish thing that the fluid in pipeline is mingled with may blocking pipe, affects the use safety of pipeline.
Air bag plugging construction can realize down-hole unmanned operation, avoids the harm of the pernicious gas in pipeline to personnel, ensure that the personal safety of operating personnel to greatest extent, and eliminates and leave over abutment sequelae, is conducive to the security of operation of civilized construction and pipeline.
Be understandable that, capsule of losing heart according to an embodiment of the invention, the operating principle of the parts such as leading screw and the course of work are all prior aries, and known by those skilled in the art, are just no longer described in detail here.
In the description of this manual, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example and combine in an appropriate manner.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: do not departing under principle of the present invention and aim and can carry out multiple change, amendment, replacement and modification to these embodiments, scope of the present invention is by claim and equivalents thereof.
Claims (8)
1. use is losed heart and is encapsulated a method for stifled Large Diameter Pipeline storm sewer, it is characterized in that: comprise the steps:
(1) utilize steel sheet pile to carry out pipe strengthening, carry out excavation of foundation pit;
(2) open a hole foreign material within the scope of the upstream line 1 ~ 5m of room, guarantees to puncture without sharp object capsule of losing heart;
(3) in the first segment pipeline of upstream, well room, arrange capsule of losing heart, inflation is held towards side, well room, capsule fixation of losing heart;
(4) lose heart capsule and air compressor is connected;
(5) check threeway blast gate, make it be in inflated condition;
(6) air compressor is started, pressurization inflation in capsule of losing heart;
(7) capsule of losing heart slowly is full of internal diameter of the pipeline after expanding, thus realizes sealing;
(8), after downstream has worked, regulate threeway blast gate, be placed on exhaust condition;
(9) by capsule rear end water body thrust of losing heart, outside capsule of losing heart pull-out well.
2. a kind of use according to claim 1 is losed heart and is encapsulated the method for stifled Large Diameter Pipeline storm sewer, it is characterized in that: in described step (2), and the scope of the room upstream line that opens a hole is 2m.
3. a kind of use according to claim 1 and 2 is losed heart and is encapsulated the method for stifled Large Diameter Pipeline storm sewer, it is characterized in that: in described step (4), and capsule of losing heart is reinforced and utilized well room to fix.
4. a kind of use according to claim 1 and 2 is losed heart and is encapsulated the method for stifled Large Diameter Pipeline storm sewer, it is characterized in that: in described step (4), and capsule of losing heart is reinforced and utilized two capsules of losing heart to support.
5. a kind of use according to claim 4 is losed heart and is encapsulated the method for stifled Large Diameter Pipeline storm sewer, it is characterized in that: described two capsules of losing heart adopt leading screw capsule top of will losing heart firm to support.
6. a kind of use according to claim 1 and 2 is losed heart and is encapsulated the method for stifled Large Diameter Pipeline storm sewer, it is characterized in that: in described step (4), lose heart between capsule with air compressor and be connected by air hose.
7. a kind of use according to claim 1 and 2 is losed heart and is encapsulated the method for stifled Large Diameter Pipeline storm sewer, it is characterized in that: described in capsule front end of losing heart be fixed with two pulling ropes.
8. a kind of use according to claim 1 and 2 is losed heart and is encapsulated the method for stifled Large Diameter Pipeline storm sewer, it is characterized in that: described in capsule of losing heart be rubber pneumatic bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410775745.5A CN104612240B (en) | 2014-12-15 | 2014-12-15 | A kind of use is losed heart the method being encapsulated stifled Large Diameter Pipeline storm sewer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410775745.5A CN104612240B (en) | 2014-12-15 | 2014-12-15 | A kind of use is losed heart the method being encapsulated stifled Large Diameter Pipeline storm sewer |
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| Publication Number | Publication Date |
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| CN104612240A true CN104612240A (en) | 2015-05-13 |
| CN104612240B CN104612240B (en) | 2016-07-13 |
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|---|---|---|---|
| CN201410775745.5A Active CN104612240B (en) | 2014-12-15 | 2014-12-15 | A kind of use is losed heart the method being encapsulated stifled Large Diameter Pipeline storm sewer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368304A (en) * | 2016-11-11 | 2017-02-01 | 江苏工程职业技术学院 | Drainage twisting shaft hole plugging device |
| CN111795252A (en) * | 2020-07-06 | 2020-10-20 | 深圳市市政工程总公司 | Water injection type water plugging air bag and use method thereof |
| CN113445607A (en) * | 2021-06-24 | 2021-09-28 | 中国葛洲坝集团生态环境工程有限公司 | Construction method for connecting inverted well wall in underground dense pipeline group |
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| JPH05148885A (en) * | 1991-11-29 | 1993-06-15 | Maeda Corp | Cut-off air bag, cut-off method of water channel by making use thereof and forming method of manhole invert by making use thereof |
| JPH08246545A (en) * | 1995-03-09 | 1996-09-24 | Yokoshima:Kk | Method of cleaning inside of duct |
| CN103669557A (en) * | 2013-12-09 | 2014-03-26 | 上海浦东新区公路建设发展有限公司 | Underground pipeline dredging method |
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2014
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05148885A (en) * | 1991-11-29 | 1993-06-15 | Maeda Corp | Cut-off air bag, cut-off method of water channel by making use thereof and forming method of manhole invert by making use thereof |
| JPH08246545A (en) * | 1995-03-09 | 1996-09-24 | Yokoshima:Kk | Method of cleaning inside of duct |
| CN103669557A (en) * | 2013-12-09 | 2014-03-26 | 上海浦东新区公路建设发展有限公司 | Underground pipeline dredging method |
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| Title |
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| 孙胜远等: "大口径管道阀门式封堵装置的研究", 《办公自动化》 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368304A (en) * | 2016-11-11 | 2017-02-01 | 江苏工程职业技术学院 | Drainage twisting shaft hole plugging device |
| CN111795252A (en) * | 2020-07-06 | 2020-10-20 | 深圳市市政工程总公司 | Water injection type water plugging air bag and use method thereof |
| CN111795252B (en) * | 2020-07-06 | 2021-09-24 | 深圳市市政工程总公司 | Water injection type water plugging air bag and use method thereof |
| CN113445607A (en) * | 2021-06-24 | 2021-09-28 | 中国葛洲坝集团生态环境工程有限公司 | Construction method for connecting inverted well wall in underground dense pipeline group |
| CN113445607B (en) * | 2021-06-24 | 2022-06-07 | 中国葛洲坝集团生态环境工程有限公司 | Construction method for connecting inverted well wall in underground dense pipeline group |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104612240B (en) | 2016-07-13 |
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