CN206143722U - Canal lining restores pipe laying water delivery and formula foundation ditch is cuted in cofferdam - Google Patents
Canal lining restores pipe laying water delivery and formula foundation ditch is cuted in cofferdam Download PDFInfo
- Publication number
- CN206143722U CN206143722U CN201621141470.0U CN201621141470U CN206143722U CN 206143722 U CN206143722 U CN 206143722U CN 201621141470 U CN201621141470 U CN 201621141470U CN 206143722 U CN206143722 U CN 206143722U
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- CN
- China
- Prior art keywords
- cofferdam
- water
- water delivery
- foundation ditch
- pipe laying
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a canal lining restores pipe laying water delivery and formula foundation ditch is cuted in cofferdam, its characterized in that: it includes along lining plate (2) and edge that the water delivery direction was laid to lead to water conveyance canal (1) channel slope (3) of slope of setting up of lining plate (2) symmetry, cofferdam (4), the upper reaches and low reaches are respectively arranged with low reaches in the upper reaches leading to water conveyance canal (1) cofferdam (4) all cut logical water conveyance canal (1), lining plate (2) of cofferdam (4) and bottom between form foundation ditch (5) futilely, it has been overcome among the prior art because freeze the shortcoming that reason such as harmony construction quality results in that channel local head loss increases, seepage prevention system destroys, results in instable slope when serious, has that canal lining repairs the problem under interruption of water supply condition not, has great social and prior art 0's advantage.
Description
Technical field
This utility model is related to Construction for Hydroelectric Project diversion technology field, is more specifically that canal lining is repaiied
Multiple pipe laying water delivery and cofferdam clean cut system foundation ditch.
Background technology
To solve the imbalance of regional water, the water diversion project of China is more and more.It is defeated with the operation of building up of engineering
Water channel road is affected by many factors such as channel SEA LEVEL VARIATION, drainage system operation conditions, freeze thawing, construction qualities, may be gone out
The damage of the forms such as existing concrete lining plate ftractures, subsides, anti-floating unstability, can to a certain extent cause channel local head to damage
Lose increase, seepage prevention system destruction, it is serious when cause slope instability, have influence on the safe operation of channel.
Channel reparation at present is generally reparation of cutting off the water supply, but for large-sized water transfer project, the south water to north for such as having put into operation
Work centerline, is responsible for Beijing, Tianjin and Hebei, Henan Province's Yan Qu lines large- and-medium size cities resident living and industrial confession
Water task, once supply water interrupting, affects social influence that is wide, causing big.Accordingly, it would be desirable to not interrupt channel hydraulic pipeline condition
Under, foundation ditch is formed using cofferdam, canal lining dry ground repairing construction is carried out under the protection in cofferdam, as far as possible continuously to user's confession
Water, improves water services quality.
Conventional bank material is generally native stone, concrete, stone-laying, steel sheet pile etc..Concrete, stone-laying cofferdam are difficult under water
Construction；Earth rock cofferdam section is larger, and foundation ditch arrangement relative difficulty is formed in limited canal cross section, and soil erosion may cause
Water delivery inverted-siphon along the line and canal silting, affect channel hydraulic pipeline ability；Steel sheet-pile cofferdam will typically insert weir base certain depth and protect
It is fixed to keep steady, or basic casting concrete, and channel structure can be caused damage.
After cofferdam forms foundation ditch, because the drainage blanket that canal liner plate and impervious barrier bottom are typically provided is connected, pad
Keep at a certain distance away in layer and be disposed with closed drain, the Water penetrative flexible pipe end in liner plate is provided with the measures such as non-return valve,
When the outer channel hydraulic pipeline water level of foundation ditch is higher, foundation ditch inside lining plate bottom can bear very high head, and uplift pressure destruction occurs.
In addition canal for water conveyance is longer, and position to be repaired is likely distributed in multiple different places along the line, therefore in the urgent need to one
Plant the cofferdam structure for meeting that construction is quick, convenient, can be recycled.
The content of the invention
The purpose of this utility model is the weak point for overcoming above-mentioned background technology, and proposes that canal lining repairs pipe laying
Water delivery and cofferdam clean cut system foundation ditch.
The purpose of this utility model is by following technical solution implementing：Canal lining repairs pipe laying water delivery and cofferdam
Clean cut system foundation ditch, it is characterised in that：Water flowing channel includes the liner plate and symmetrical along described liner plate along the laying of water delivery direction
The inclined canal slope for arranging；One cofferdam, the described cofferdam of upstream and downstream are respectively arranged in the upstream and downstream of water flowing channel
Water flowing canal slope is blocked,
Dry foundation pit is formed between described cofferdam and the liner plate of bottom, is arranged side by side with described dry foundation pit
The water insertion in cofferdam and outside is stretched out at some water delivery pipe layings, the two ends of described water delivery pipe laying, and described cofferdam is modular
Buoyancy tank steel construction, in the cofferdam told aerofluxuss, discharge structure are internally provided with, and the bottom in described cofferdam is provided with rubber
Pad, described valve rubber is close on described liner plate；It is made up of several casings in described cofferdam, between each casing
By latching connection, and water sealing structure is provided between adjacent casing；Set in the bottom of described liner plate and impervious barrier
There is drainage blanket, Water penetrative flexible pipe is equidistantly installed in described drainage blanket, the end of the Water penetrative flexible pipe described in each is all provided with
Non-return valve is equipped with, is placed outside described dry foundation pit and be provided with the non-return valve removed obturator, in described obturator
And it is mounted on immersible pump on the non-return valve between the edge in described cofferdam.
In above-mentioned technical proposal：Described water delivery pipe laying is steel matter, between the cofferdam of described upstream and downstream
Head difference is 2 meters -5 meters, and the caliber per the water delivery pipe laying described in root is 1 meter -2 meters.
In above-mentioned technical proposal：Described obturator is arranged on the second row of described dry foundation pit periphery or some
On the non-return valve removed on row.
In above-mentioned technical proposal：The drainage blanket arranged between described dry foundation pit and described water flowing channel is protected all the time
Hold connection.
In above-mentioned technical proposal：Described water flowing channel for inverted trapezoidal structure.
In above-mentioned technical proposal：Uninterrupted water flowing is remained on the outside of described dry foundation pit.
In above-mentioned technical proposal：The non-return valve in cofferdam described in keeping keeps opening-wide state.
In above-mentioned technical proposal：Immersible pump is installed in described dry foundation pit.
This utility model has the advantage that：1st, this utility model cofferdam adopt modular buoyancy tank steel construction, be easy to deposit,
Transport, is capable of achieving cofferdam and rises and falls in water, is conducive to the underwater construction and dismounting in cofferdam, and ditch water flow will not be polluted,
And repeatable utilization, it is cost-effective.
2nd, this utility model cofferdam bottom sets one layer of valve rubber, prevents it from making with central line tunnel concrete lining in south plate directly contact
Into secondary destruction, while playing certain sealing effect under the working condition of cofferdam.
3rd, one cofferdam is respectively arranged in upstream and downstream in channel, forms full clean cut system foundation ditch, by pipe laying gravity flow water delivery, water delivery
Ability is of a relatively high, and to Middle Line Project For Transferring Water From South To North general main canal conveyance power of water 25%-50% of designed capacity or so is can reach.
4th, this utility model can be greatly reduced the head in foundation ditch, effectively reduce the uplift pressure that foundation ditch inside lining is born,
The uplift pressure that foundation ditch inside lining is undertaken is enable within the scope of structure is born, it is to avoid lining cutting occurs uplift pressure destruction.
5th, this utility model solves the canal lining in the case where water supply conditions are not interrupted and repairs problem, with larger social benefit
And economic benefit.
Description of the drawings
Fig. 1 is this utility model horizontal layout schematic diagram.
Fig. 2 is this utility model A-A drawings in side sectional elevation.
In figure：Water flowing channel 1, liner plate 2, canal slope 3, cofferdam 4, aerofluxuss, discharge structure 4.1, dry foundation pit 5, water delivery are buried
Pipe 5.1, impervious barrier 6, drainage blanket 7, Water penetrative flexible pipe 8, non-return valve 9, obturator 10, immersible pump 11.
Specific embodiment
Describe performance of the present utility model in detail below in conjunction with the accompanying drawings, but they are not constituted to of the present utility model
Limit, it is only for example, while by explanation advantage of the present utility model will become clearer from it is easy to understand.
Technical research is carried out to one phase of Middle Line Project For Transferring Water From South To North general main canal, the engineering adopts trapezoidal cross-section, tunneling boring is cast-in-place
Concrete lining thickness of slab 8cm-10cm, liner plate bottom adopts impermeable composite geomembrane, and channel drainage system is typically by draining pad
Layer, closed drain (Water penetrative flexible pipe), non-return valve etc. are constituted, the representativeness with long distance water transfer channel.
This utility model canal lining repairs pipe laying water delivery and cofferdam clean cut system foundation ditch, it is characterised in that：Water flowing channel 1 is wrapped
Include along the liner plate 2 of water delivery direction laying and along the described symmetrically arranged inclined canal slope 3 of liner plate 2；In water flowing channel 1
Upstream and downstream respectively arranges one cofferdam 4, and water flowing channel 1, described cofferdam 4 are blocked in the described cofferdam 4 of upstream and downstream
Dry foundation pit 5 is formed and the liner plate 2 of bottom between,
It is arranged side by side with some water delivery pipe layings 5.1 in the described dry foundation pit 5, the two ends of described water delivery pipe laying 5.1
The water insertion in cofferdam 4 and outside is stretched out, described cofferdam 4 is modular buoyancy tank steel construction, is arranged inside the cofferdam 4 told
There are aerofluxuss, discharge structure 4.1, the bottom in described cofferdam 4 is provided with valve rubber, described valve rubber is close to described lining
Build on plate 2；It is made up of several casings in described cofferdam 4, by latching connection between each casing, and in adjacent casing
Between be provided with water sealing structure；
Drainage blanket 7 is provided with the bottom of described liner plate 2 and impervious barrier 6, is equidistantly installed in described drainage blanket 7
There is Water penetrative flexible pipe 8, the end of the Water penetrative flexible pipe 8 described in each is provided with non-return valve 9, it is peripheral in described dry foundation pit 5
On obturator 10 is installed on the non-return valve 9 removed, it is inverse between described obturator 10 and the edge in described cofferdam 4
Only it is mounted on immersible pump 11 on valve 9.
Described water delivery pipe laying 5.1 is steel matter, and the head difference between the cofferdam 4 of described upstream and downstream is 2 meter -5
Rice, using upstream and downstream head difference, by the gravity flow water delivery of pipe laying 5.1, and the caliber per the water delivery pipe laying 5.1 described in root is 1 meter -2
The distance between rice, described cofferdam 4 are the lining cutting that the distance between specific cofferdam 4 is repaired as needed between 20-30 rice
The length of plate is determining.
Described obturator 10 is arranged on having removed on the second row of the described periphery of dry foundation pit 5 or some rows
(it is not to remove each row's non-return valve 9 after the peripheral second row of dry foundation pit 5, simply removes after second row on non-return valve 9
A certain row's non-return valve 9, including including second row non-return valve 9).
The drainage blanket 7 arranged between described dry foundation pit 5 and described water flowing channel 1 is remained and connected.
Described water flowing channel 1 for inverted trapezoidal structure or rectangular configuration；The outside of described dry foundation pit 5 remains
Uninterrupted water flowing；The non-return valve 9 in cofferdam 4 described in keeping keeps opening-wide state.
The method that this utility model canal lining repairs pipe laying water delivery and cofferdam clean cut system foundation ditch, it is characterised in that：Including
Following steps；
1., obturator is installed：Be provided with cofferdam 4 in the described upstream and downstream of water flowing channel 1, described cofferdam 4 with
The dry foundation pit 5 formed between liner plate 2, described dry foundation pit 5 does not carry out in advance draining, removes outside the dry foundation pit 5 in both sides
Second or some row's non-return valves 9 are enclosed, then is removing installation obturator 10, described obturator in the hole that non-return valve 9 is stayed
The water stream channel of water and bottom drainage blanket 7 in 10 obstruction water flowing channels 1；
2., installing submersible pump：It is interior interior between the border of dry foundation pit 5 in enclosing for the obstruction of 5 external blocking device of dry foundation pit 10
The aperture installing submersible pump 11 of non-return valve 9；
3., do foundation pit internal drainage to process：The non-return valve 9 in the region of dry foundation pit 5 described in keeping is opened wide all the time；
4., cofferdam demolition：After the completion of channel is repaired, cofferdam 4 is dismantled as several buoyancy tanks, by tractor tug by buoyancy tank water
Fortune or land transportation of debarking are repaired to next point to be repaired.
If occurring a large amount of infiltrations in wherein described dry foundation pit 5, can be in the described installing submersible pump 11 of dry foundation pit 5.
Technical research has been carried out to one phase of Middle Line Project For Transferring Water From South To North general main canal：Simultaneously declare with this patent《One kind is not interrupted
The drainage of foundation pit method that canal lining is repaired dryly under the conditions of water delivery》The analytical calculation of similar operating mode, analytical calculation canal are carried out
The canal dike in road bankets infiltration coefficient for 1 × 10-4Cm/s, it is 1 × 10 that ground is the infiltration coefficient of uniform aquiclude-5Cm/s,
Channel water level is 7.2m, even if being the situation of 10m in phreatic high, arranges miniature simultaneously in foundation ditch using the technical program
Draining pump draws water, and the uplift pressure that canal liner plate bears in foundation ditch is 0m heads.
Using the technical program, water percolating capacity is obviously reduced in foundation ditch, the construction of foundation ditch internal drainage and liner plate interfere it is little,
Be conducive to the repairing construction of foundation ditch inside lining plate.Analytical calculation shows that the technical program arranges micro-drainage pump simultaneously in foundation ditch
Draw water, water percolating capacity is 4-5m in foundation ditch when level of ground water is 10m3/d。
Above-mentioned unspecified part is prior art.
Claims (8)
1. canal lining repairs pipe laying water delivery and cofferdam clean cut system foundation ditch, it is characterised in that：Water flowing channel (1) is included along water delivery side
To the liner plate (2) of laying and along the described symmetrically arranged inclined canal slope (3) of liner plate (2)；In the upper of water flowing channel (1)
Water flowing channel (1) is blocked in trip cofferdam (4) together with downstream respectively arrangement, the described cofferdam (4) of upstream and downstream, and described encloses
Dry foundation pit (5) is formed between weir (4) and the liner plate (2) of bottom,
It is arranged side by side with some water delivery pipe layings (5.1) in the described dry foundation pit (5), the two of described water delivery pipe laying (5.1)
The water insertion in cofferdam (4) and outside is stretched out at end, and described cofferdam (4) is modular buoyancy tank steel construction, in the cofferdam (4) told
Aerofluxuss, discharge structure (4.1) are internally provided with, the bottom in described cofferdam (4) is provided with valve rubber, described valve rubber is tight
It is attached on described liner plate (2)；It is made up of several casings in described cofferdam (4), by the company of lock between each casing
Connect, and water sealing structure is provided between adjacent casing；
Drainage blanket (7) is provided with the bottom of described liner plate (2) and impervious barrier (6), in described drainage blanket (7) equidistantly
Water penetrative flexible pipe (8) is installed, the end of the Water penetrative flexible pipe (8) described in each is provided with non-return valve (9), described dry
Place outside foundation ditch (5) and obturator (10) is installed on the non-return valve (9) removed, enclose with described in described obturator (10)
Immersible pump (11) is mounted on non-return valve (9) between the edge on weir (4).
2. canal lining according to claim 1 repairs pipe laying water delivery and cofferdam clean cut system foundation ditch, it is characterised in that：It is described
Water delivery pipe laying (5.1) be steel matter, the head difference between the cofferdam (4) of described upstream and downstream is 2 meters -5 meters, and per root
The caliber of described water delivery pipe laying (5.1) is 1 meter -2 meters.
3. canal lining according to claim 1 and 2 repairs pipe laying water delivery and cofferdam clean cut system foundation ditch, it is characterised in that：
The check removed of the described obturator (10) on the second row of described dry foundation pit (5) periphery or some rows
On valve (9).
4. canal lining according to claim 3 repairs pipe laying water delivery and cofferdam clean cut system foundation ditch, it is characterised in that：It is described
Dry foundation pit (5) and described water flowing channel (1) between the drainage blanket (7) that arranges remain and connect.
5. canal lining according to claim 4 repairs pipe laying water delivery and cofferdam clean cut system foundation ditch, it is characterised in that：It is described
Water flowing channel (1) for inverted trapezoidal structure.
6. the canal lining according to claim 4 or 5 repairs pipe laying water delivery and cofferdam clean cut system foundation ditch, it is characterised in that：
Uninterrupted water flowing is remained on the outside of described dry foundation pit (5).
7. canal lining according to claim 6 repairs pipe laying water delivery and cofferdam clean cut system foundation ditch, it is characterised in that：Keep
Non-return valve (9) in described cofferdam (4) keeps opening-wide state.
8. canal lining according to claim 7 repairs pipe laying water delivery and cofferdam clean cut system foundation ditch, it is characterised in that：Institute
Immersible pump (11) is installed in the dry foundation pit (5) stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621141470.0U CN206143722U (en) | 2016-10-20 | 2016-10-20 | Canal lining restores pipe laying water delivery and formula foundation ditch is cuted in cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621141470.0U CN206143722U (en) | 2016-10-20 | 2016-10-20 | Canal lining restores pipe laying water delivery and formula foundation ditch is cuted in cofferdam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206143722U true CN206143722U (en) | 2017-05-03 |
Family
ID=58622976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621141470.0U Withdrawn - After Issue CN206143722U (en) | 2016-10-20 | 2016-10-20 | Canal lining restores pipe laying water delivery and formula foundation ditch is cuted in cofferdam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206143722U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106381842A (en) * | 2016-10-20 | 2017-02-08 | 长江勘测规划设计研究有限责任公司 | Canal lining repair buried pipe water transfer and cofferdam intercepted foundation pit and method |
| CN110080258A (en) * | 2019-05-09 | 2019-08-02 | 河南传衡建设工程有限公司 | River channel helps slope gallery type fast assembling-disassembling combined cofferdam |
| CN112459012A (en) * | 2020-11-16 | 2021-03-09 | 河北省水利工程局 | Canal lining plate repairing method |
-
2016
- 2016-10-20 CN CN201621141470.0U patent/CN206143722U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106381842A (en) * | 2016-10-20 | 2017-02-08 | 长江勘测规划设计研究有限责任公司 | Canal lining repair buried pipe water transfer and cofferdam intercepted foundation pit and method |
| CN106381842B (en) * | 2016-10-20 | 2019-10-08 | 长江勘测规划设计研究有限责任公司 | Canal lining repairs pipe laying water delivery and cofferdam clean cut system foundation pit and construction method |
| CN110080258A (en) * | 2019-05-09 | 2019-08-02 | 河南传衡建设工程有限公司 | River channel helps slope gallery type fast assembling-disassembling combined cofferdam |
| CN112459012A (en) * | 2020-11-16 | 2021-03-09 | 河北省水利工程局 | Canal lining plate repairing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170503 Effective date of abandoning: 20191008 |