CN106638695A - Leakage detection ditch for building protection in large-thickness collapsible loess area - Google Patents
Leakage detection ditch for building protection in large-thickness collapsible loess area Download PDFInfo
- Publication number
- CN106638695A CN106638695A CN201610847792.5A CN201610847792A CN106638695A CN 106638695 A CN106638695 A CN 106638695A CN 201610847792 A CN201610847792 A CN 201610847792A CN 106638695 A CN106638695 A CN 106638695A
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- leak detection
- ditch
- well
- leakage detection
- water
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a leakage detection ditch for building protection in a collapsible loess area. By the adoption of the leakage detection ditch, water leakage of laid drainage buried pipelines can be effectively found and eliminated. A leakage detection well is arranged every 100-120 m or so, and each leakage detection well is built close to the closest drainage inspection well or water supply valve within the range of 100-120 m and located in the downstream position. Pipeline faults can be found rapidly, and the leakage detection range is effectively shortened. The leakage detection ditch is provided with water collecting pits which are 300 mm deep, wherein each water collecting pit is arranged at the bottom of the corresponding leakage detection well with a certain slope and orientation (should be larger than 0.02), and the pits are used for collecting water leaked from the pipelines. As for an area where the water collecting pits cannot be arranged due to site condition limitation, a water fender used for blocking water flow can be arranged in the position where each water collecting pit should be arranged originally, the end face of one side of each water fender is attached to the ditch wall of the leakage detection ditch, and the interval H between the end face of the other side of each water fender and the ditch wall of the leakage detection ditch is 200-300 mm. In the leakage detection process of the leakage detection ditch, an operator can observe whether water flow exists in the notch or not from the position above the leakage detection well so as to judge whether the upstream pipeline leaks water or not.
Description
Technical field
The present invention is a kind of leak detection ditch for Collapsible Loess District building protection, belongs to fixed structures technology neck
Domain.The leak detection ditch can be quickly detected the phenomenon of leak detection ditch interior conduit evaporating, emitting, dripping or leaking of liquid or gas.
Background technology
In national regulation, leak detection pipe trench (ditch of hereinafter referred to as hunting leak) be Collapsible Loess District building protection scope it
The buried plumbing pipe trench of interior setting, it can be played is easy to find and exclude the discharge being laid within the scope of building protection
Water buried pipeline drainage, and Maintenance and Repair can be carried out to pipeline.According to different waterproof requirements, can be using different waterproofs etc.
Level leak detection ditch, but all must not seepage, must have certain gradient (preferably greater than 0.02), other buildings and equipment must not be borrowed
Basis, leak detection borehole wall etc. are used as furrow bank.Width cannot be less than 600mm.When pipeline is more and concentration is laid, can be current using half
Pipe trench or walkway duct.
Leak detection well serves vital effect as the indispensable part of leak detection ditch in leak detection ditch.Leak detection
Well is for checking that whether the water supply and sewerage pipeline in being laid in indoor and outdoor leak detection ditch or sleeve pipe has water to leak into the well in well room, wraps
Include a catch pit less than leak detection ditch bottom of trench 300mm.The related country in Collapsible Loess District and local regulation, figure at this stage
The setting principle of set pair leak detection well is described as：" leak detection well should be arranged on the outdoor leak detection pipe trench end in building protective distance
At end and pipe trench segmentation leak detection along the line ", but national regulation does not make clear stipulaties to being segmented at leak detection.
The diagram of leak detection well is only outdoor leak detection ditch Zhigou and the outdoor that building goes out pipeline of registering one's residence in existing national standard drawings
The practice that leak detection ditch hondo connects, is divided into individual well, Double-well and three wells.
Individual well be when water supply and drainage pipeline in building protective apart from interior using leak detection pipe trench or during casing installation, pipe trench or
Leak detection individual well should be set at the segmentation leak detection along the line of cannula end and pipe trench or sleeve pipe.
Double-well is when drainage pipeline adopts leak detection pipe trench or casing installation, and pipe trench or set in building protective apart from interior
When pipe end need to set inspection shaft, Double-well should be set.Left side well is leak detection well, right side it is adjacent thereto for drainage inspection well.
Three wells are when drainage pipeline adopts leak detection pipe trench or casing installation, and pipe trench or set in building protective apart from interior
Pipe end need to set inspection shaft and inspection shaft as the water inlet of two different directions when, three wells should be set.Both sides well is leak detection well, in
Between well be drainage inspection well.
The content of the invention
The present invention is exactly designed there is provided a kind of for collapsible loess for above-mentioned the deficiencies in the prior art
The leak detection ditch of regional architecture thing protection, its objective is to solve the leak detection of pipeline and maintenance issues in leak detection ditch, improve pipeline event
The accuracy of barrier investigation.
The purpose of the present invention is achieved through the following technical solutions：
This kind is used for the leak detection ditch of Collapsible Loess District building protection, and the non-deadweight of the Collapsible Loess District is wet
Sunken property grade is I～IV grade, and the leak detection ditch (1) for building protection is according to GB GB50025-2004 and national standard drawing
Collection S531-1～5 are built, and the pipeline of drainage system is laid in ditch of hunting leak, it is characterised in that：Build in leak detection ditch (1)
Inspection shaft (2) is made using PPB material injections, well seat (3) and the interior pipeline laid of leak detection ditch (1) of the bottom of inspection shaft (2)
(9) socket joint connection, the top of inspection shaft (2) communicates with air, and the position of the leak detection well (4) built in leak detection ditch (1) is by water
Stream direction is arranged on behind inspection shaft (2), and the distance between adjacent leak detection well (4) is 100～120m, and leak detection well (4) is
Reinforced concrete structure, well (4) of hunting leak includes the pit shaft (5) for penetrating into ground stretched out from from the cover plate (7) of leak detection ditch (1),
The distance between the center line of pit shaft (5) and the center line of inspection shaft (2) L, the outer diameter D of pit shaft (5)1With the well of inspection shaft (2)
The maximum outside diameter D of seat (3)2Between meet relationship below：
L≤D1/2+D2The span of/2+K, K is 0～500mm；
Leak detection well (4) is additionally included in the catch pit (6) of the deep 300mm that leak detection ditch (1) bottom is built immediately below pit shaft (5),
Or when being limited by field condition, leak detection ditch (1) bottom builds one and acts the dash for stopping flow action immediately below pit shaft (5)
Plate (8), the side end face of water fender (8) is fitted with the furrow bank of leak detection ditch (1), spacing H of another side end face and leak detection ditch (1) furrow bank
For 200～300mm.
The characteristics of technical solution of the present invention and generation have the beneficial effect that：
1. leak probability that is easy for installation, reducing pipeline and inspection shaft joint
The technology of the present invention adopt finished plastic inspection shaft, compare traditional inspection shaft in construction have it is easy to operate, account for
The little advantage in ground, while connected mode employs the conventional bayonet joint mode of pipeline, greatly reduces pipeline and inspection shaft
The leak probability of joint；
2. easy access
Because the evaporating, emitting, dripping or leaking of liquid or gas phenomenon of pipeline tends to occur at connection between pipe sections, connect with pipeline including pipeline and manage
Road connects etc. with inspection shaft, so the technology of the present invention will be hunted leak, well is built with inspection shaft patch, is more convenient for being pasted with leak detection well and builds inspection
The leak detection of well and maintenance, well lid arrangement is also more attractive in appearance from from ground；
3. effective control leak detection scope
The setting space of leak detection well is to row according to specification GB50014-2006 (version in 2014) in technical solution of the present invention
The setting space of water inspection shaft requires that come what is determined inspection shaft maximum spacing refers to table 1, is not considering the situation that arm is accessed
Under, drainage inspection well maximum arrangement pitch is 120m, therefore the setting space of leak detection well can be controlled in 100～120m or so
Place builds nearby with inspection shaft patch, can effectively reduce leak detection scope；
Table 1
4. quick lock in pipe network leak source
In sum, the present invention confirm inspection shaft with leak detection well should paste build and meanwhile specify that it is adjacent hunt leak well arrangement between
Away from.Below by the ordinal relation of well and inspection shaft arrangement of clearly hunting leak：
Fig. 1,2 show the arrangement form of hunt leak well and inspection shaft, add label to represent inspection shaft and its position with W in figure,
Leak detection well and its position are represented with J plus label, water (flow) direction is from left to right in figure, Fig. 1 exists for leak detection well in front, inspection shaft
Arrangement form afterwards, it can be seen that three leak detection wells are had from left to right, positioned at the leak detection model of middle leak detection well J2
Covering inspection shaft W1, W2, W3 are enclosed, wherein W1 charges for remittance are 120m to the charge for remittance length of middle leak detection well, and W2 charges for remittance are to middle leak detection
The charge for remittance length of well is 80m, and W3 charges for remittance to the charge for remittance length of middle leak detection well is 40m；
Fig. 2 is inspection shaft in front, the posterior arrangement form of leak detection well, it can be seen that in identical inspection shaft and pipe
In the case of long arrangement, the leak detection scope of middle leak detection well J2 covers W2, W3, W4 in Fig. 2, and wherein W2 charges for remittance are to middle leak detection well
Charge for remittance length be 80m, W3 charges for remittance to the charge for remittance length of middle leak detection well are 40m, and W4 charges for remittance are long to the charge for remittance of middle leak detection well
Degree be less than 1m, this kind of leak detection well arrangement form can greatly shorten water after pipe leakage flow to leak detection downhole catch pit away from
From, it is assumed that water flow velocity in pipe trench is constant, then be pooled to leak detection downhole with the leak detection well arrangement pipe leakage in Fig. 2
The time of catch pit will shorten 1/3 than Fig. 1, and the initial stage that water leakage situation can occur in pipeline pinpoints the problems in time.
5. the strong adaptability of pair environment
For arranging the inconvenient region of leak detection well catch pit pipe leakage is collected in the form of water fender, leak water
Flow from water fender with leak detection ditch furrow bank spacing to flow through at the gap of H, be easy to see whether streamflow regime from leak detection well top
To judge whether the leak detection well upstream has pipeline that leakage loss situation occurs.
Description of the drawings
Fig. 1 is a kind of arrangement schematic diagram of leak detection well and inspection shaft along water (flow) direction, and water (flow) direction is for from left to right
Fig. 2 is another kind of arrangement schematic diagram of leak detection well and inspection shaft along water (flow) direction, and water (flow) direction is for from left to right
Fig. 3 is the relative position and structural representation of a kind of leak detection well and inspection shaft, and water (flow) direction is for from left to right
Fig. 4 is the relative position and structural representation of another kind of leak detection well and inspection shaft, and water (flow) direction is for from left to right
Fig. 5 is the position view of leak detection downhole water fender in Fig. 4, and water (flow) direction is for from right to left
Specific embodiment
Technical solution of the present invention is further described below with reference to drawings and Examples：
Referring to shown in accompanying drawing 3～5, this kind is used for the leak detection ditch of Collapsible Loess District building protection, the settlement by soaking
The non-gravity wet collapse grade of Canal in Loess Area is I～IV grade, and the leak detection ditch (1) for building protection is according to GB
GB50025-2004 and national standard atlas S531-1～5 are built, and in leak detection ditch the pipelines such as drainage system are laid, in leak detection ditch
(1) inspection shaft (2) built in is made using PVC-U or double-wall corrugated pipe, the well seat (3) of the bottom of inspection shaft (2) with
Pipeline (9) the socket joint connection of laying in leak detection ditch (1), the top of inspection shaft (2) communicates with air, builds in leak detection ditch (1)
The position of leak detection well (4) be arranged on behind inspection shaft (2) by water (flow) direction, the distance between adjacent leak detection well (4) is
100～120m, leak detection well (4) is reinforced concrete structure, and well (4) of hunting leak includes what is stretched out from from the cover plate (7) of leak detection ditch (1)
Penetrate into the pit shaft (5) on ground, the distance between the center line of pit shaft (5) and center line of inspection shaft (2) L, pit shaft (5) it is outer
Meet relationship below between the maximum outside diameter D2 of the well seat (3) of footpath D1 and inspection shaft (2)：
The span of L≤D1/2+D2/2+K, K is 0～500mm；
Leak detection well (4) is additionally included in the catch pit (6) of the deep 300mm that leak detection ditch (1) bottom is built immediately below pit shaft (5),
Or when being limited by field condition, leak detection ditch (1) bottom builds one and acts the dash for stopping flow action immediately below pit shaft (5)
Plate (8), the side end face of water fender (8) is fitted with the furrow bank of leak detection ditch (1), spacing H of another side end face and leak detection ditch (1) furrow bank
For 200～300mm.Water fender (8) is cannot to excavate 300mm depths immediately below every place leak detection well 4 being limited by field condition
Catch pit (6) when the version that adopts, by lacking for 200～300mm between water fender (8) and leak detection ditch (1) furrow bank
Mouthful, can be observed whether have water to flow through, the leakage loss situation of pipeline (9) is judged with this.
Leak detection ditch of the present invention carries out first the solid muscle of leak detection ditch in construction and pours, then according to design drawing
Pipe laying (9), inspection shaft (2) is finally pasted inspection shaft (2) and is built by laying bricks or stones leak detection well (4), spacing using finished product engineering plastics inspection shaft
For L.
Compared with existing structure, leak detection ditch of the present invention can be realized arranging over long distances, and to hunting leak, ditch can be carried out
Segmentation leak detection, makes leak detection scope control in the range of certain length, improves the accuracy of pipeline fault investigation, reduces pipeline
Leak is pooled to the time of leak detection well, and the inspection to pipeline evaporating, emitting, dripping or leaking of liquid or gas phenomenon has more specific aim and actual effect.
Claims (1)
1. a kind of leak detection ditch for Collapsible Loess District building protection, the non-self-collapsibility of the Collapsible Loess District
Property grade be I～IV grade, the leak detection ditch (1) for building protection is according to GB GB50025-2004 and national standard atlas
S531-1～5 are built, and the pipeline of drainage system is laid in ditch of hunting leak, it is characterised in that：The inspection built in leak detection ditch (1)
Look into well (2) to make using PPB material injections, well seat (3) and the interior pipeline (9) laid of leak detection ditch (1) of the bottom of inspection shaft (2)
Socket joint connects, and the top of inspection shaft (2) communicates with air, and the position of the leak detection well (4) built in leak detection ditch (1) is by current side
To being arranged on behind inspection shaft (2), the distance between adjacent leak detection well (4) is 100～120m, and leak detection well (4) is reinforcing bar
Xoncrete structure, well (4) of hunting leak includes the pit shaft (5) for penetrating into ground stretched out from from the cover plate (7) of leak detection ditch (1), pit shaft
(5) the distance between center line and the center line of inspection shaft (2) L, the outer diameter D of pit shaft (5)1With the well seat (3) of inspection shaft (2)
Maximum outside diameter D2Between meet relationship below：
L≤D1/2+D2The span of/2+K, K is 0～500mm；
Leak detection well (4) is additionally included in the catch pit (6) of the deep 300mm that leak detection ditch (1) bottom is built immediately below pit shaft (5), or
When being limited by field condition, leak detection ditch (1) bottom builds one and acts the water fender for stopping flow action immediately below pit shaft (5)
(8), the side end face of water fender (8) is fitted with the furrow bank of leak detection ditch (1), and another side end face is with spacing H of leak detection ditch (1) furrow bank
200～300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610847792.5A CN106638695A (en) | 2016-09-23 | 2016-09-23 | Leakage detection ditch for building protection in large-thickness collapsible loess area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610847792.5A CN106638695A (en) | 2016-09-23 | 2016-09-23 | Leakage detection ditch for building protection in large-thickness collapsible loess area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106638695A true CN106638695A (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610847792.5A Pending CN106638695A (en) | 2016-09-23 | 2016-09-23 | Leakage detection ditch for building protection in large-thickness collapsible loess area |
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| Country | Link |
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| CN (1) | CN106638695A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723126A (en) * | 2018-12-19 | 2019-05-07 | 中国建筑西北设计研究院有限公司 | Leak detection well and leak detecting and alarming device on a kind of leak detection pipe trench |
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| CN105442631A (en) * | 2015-12-29 | 2016-03-30 | 中国市政工程西北设计研究院有限公司 | Double plastic pipe and plastic shaft type leakage detecting device for collapsible loess region |
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| CN205444244U (en) * | 2016-03-25 | 2016-08-10 | 句容市科达技术开发有限公司 | Take bell and spigot antiseep inspection shaft |
-
2016
- 2016-09-23 CN CN201610847792.5A patent/CN106638695A/en active Pending
Patent Citations (6)
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|---|---|---|---|---|
| JPH09144119A (en) * | 1995-11-17 | 1997-06-03 | Ebara Corp | Inverted siphon for vacuum type sewerage |
| CN102561501A (en) * | 2010-12-09 | 2012-07-11 | 中铝国际技术发展有限公司 | Pressure pipeline leakage detection pipe ditch for collapsible loess regions |
| CN105275020A (en) * | 2014-07-07 | 2016-01-27 | 中石化洛阳工程有限公司 | Underground pipeline anti-leakage facility |
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| CN105442631A (en) * | 2015-12-29 | 2016-03-30 | 中国市政工程西北设计研究院有限公司 | Double plastic pipe and plastic shaft type leakage detecting device for collapsible loess region |
| CN205444244U (en) * | 2016-03-25 | 2016-08-10 | 句容市科达技术开发有限公司 | Take bell and spigot antiseep inspection shaft |
Non-Patent Citations (2)
| Title |
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| 柳金海: "《不良条件管道工程设计与施工手册》", 30 November 1992, 中国物价出版社 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723126A (en) * | 2018-12-19 | 2019-05-07 | 中国建筑西北设计研究院有限公司 | Leak detection well and leak detecting and alarming device on a kind of leak detection pipe trench |
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Application publication date: 20170510 |
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