CN1042206A - A kind of foundation anti-seepage method of water retaining structure - Google Patents
A kind of foundation anti-seepage method of water retaining structure Download PDFInfo
- Publication number
- CN1042206A CN1042206A CN 88107458 CN88107458A CN1042206A CN 1042206 A CN1042206 A CN 1042206A CN 88107458 CN88107458 CN 88107458 CN 88107458 A CN88107458 A CN 88107458A CN 1042206 A CN1042206 A CN 1042206A
- Authority
- CN
- China
- Prior art keywords
- retaining structure
- film
- water retaining
- sand gravel
- groove
- Prior art date
- 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.)
- Pending
Links
Landscapes
- Revetment (AREA)
Abstract
The invention discloses a kind of foundation anti-seepage method of water retaining structure, can be used for the foundation anti-seepage of cofferdam, Xu Di, dike bank etc.It comprises grooving under water.Smooth domatic, lay barrier film, cover sand gravel topping several steps, have good seepage-proof property, cost low (only for cementation method cost 1/3rd), the simple advantage of constructing.
Description
The present invention relates to a kind of water retaining structure, especially the foundation anti-seepage method in cofferdam.
On easily permeable ground (whenever round the clock above 50 meters), for example on the sand gravel riverbed, build water retaining structure, for example during the cofferdam, must adopt an effective measure and block seepage flow or prolong seepage paths in its ground, to reduce the drainage works amount of foundation ditch.These measures comprise: squeeze into camp sheathing in ground, well cementing curtain or concrete cut etc. are set.As Soviet Union Ю Г Nikolayev, that introduces in А Г Ya Kebaisong work " construction diversion in the water resources and hydropower construction " (Chinese Water Conservancy publishing house translation issuing in August nineteen eighty-two) is such.Though these seepage control measures are effective, involve great expense, need to consume a large amount of cement and steel, and the construction technology complexity, progress is slow.
A kind of good seepage-proof property, the cost that the objective of the invention is to avoid above-mentioned the deficiencies in the prior art part and propose is low, the foundation anti-seepage method of the simple water retaining structure of construction.
Purpose of the present invention can reach by following measure: the feature of the foundation anti-seepage method in a kind of water retaining structure, especially cofferdam comprises the following steps:
A. carry out grooving under water in the water retaining structure upstream face leg wire of slope outside along leg wire of slope,
B. the end face of the domatic and water retaining structure of the groove that joins with bottom land with the water retaining structure water surface and upstream face leveling,
C. fluid-tight fexible film is laid in described in the b. on the even curface, promptly from the end face of water retaining structure the domatic bottom land that is applied to always through upstream face and groove;
D. topped sand gravel overcoat on film.
Purpose of the present invention can also reach by following measure:
The degree of depth of described groove is for arriving or do not arrive the impervious layer of ground.
Described method comprises that also the sand gravel that grooving is dug out fills the step of water retaining structure body.
Described film is artificial leather or oilcloth or is made of impervious barrier that is positioned at the intermediate layer and the topping that is positioned at the impervious barrier both sides that impervious barrier is an agricultural plastic film, and topping is a glass fiber woven cloth.
The sand gravel of topped topping is contained in the woven bag on film.
The drawing of accompanying drawing is described as follows:
Fig. 1 is a schematic cross-sectional view of the present invention;
Fig. 2 is the structural representation of the used barrier film of the present invention.
The present invention will now be further detailed embodiment:
Grooving under water (6) is carried out along leg wire of slope (10) in water retaining structure upstream face (2) leg wire of slope (10) outside.The cross dimensions of groove (6) is: the degree of depth need be dug the impervious layer (7) to ground, and for example argillic horizon its objective is to dig to penetrate water layer (16), so that film (5) and impervious layer (7) are joined and antiseepage.Preferably dig to the following 0.1-0.5 rice of impervious layer (7).Stable requirement is 1 to domatic (11) gradient of groove: 1.5-1: 2 according to excavation.Bottom land (8) width should guarantee barrier film (5) and impervious layer (7) overlap joint 1-1.5 rice, general bottom land (8) excavation width is not less than 2 meters, in order to improve the economic benefit of building water retaining structure, the sand gravel direct filling water retaining structure body (3) that can utilize grooving (6) to dig out fetches earth, transports the workload of filling water retaining structure body (3) to reduce from Tu Yuan.When a large amount of if desired sand gravels filled water retaining structure or make concrete aggregate, the excavation width of bottom land (8) can suitably strengthen.Grooving (6) machinery can adopt the sand ship to carry out, and its production capacity should be not less than 100 meters
3/ hour.Also need be equipped with the haulage device of equal capability simultaneously, the most handy belt conveyer is directly delivered to the sand gravel that digs out the section of water retaining structure with interior its body (3) that fills.Belt conveyor is installed aboard ship, can together move with adopting the sand ship.
Film (5) should be laid on the basic even curface.The surface of the domatic and groove of water retaining structure is general uneven, so need flatten.Available pneumatic flat board needs electromagnetic shaker to be put in bottom land (8) leveling earlier, then be installed in winch on the water retaining structure end face (1) with it along carrying on domatic (11) of groove and the upstream face (2), domatic (11) of the groove that can join with bottom land (8) with water retaining structure upstream face (2) for several times and the upstream face (2) and the end face (1) of water retaining structure flatten repeatedly.
After the leveling, fluid-tight fexible film (5) is applied to bottom land (8) from end face (1) the process upstream face (2) of water retaining structure and domatic (11) of groove always.Laying method is that the significantly film coil that will splice in advance is transported to end face (1), puts the position well, and an end of pre-fixed film (5) utilizes the coiled material own wt to put down slowly then from top to bottom and launches film (5), supports to bottom land (8).Should film (5) be paved compacting by 2-3 name diver operation under water.Film (5) to lay suitable pine unsuitable tight so that guarantee that it is with domatic identical.Indivedual hollow places, the diver will be with foot-operated real.In order to guarantee laying quality, preferably use television monitoring and commander diver's operation under water.The length of lap-joint (9) is no less than 1 meter between film (5) and the film (5), and folding three times.
Film (5) bears very big inside and outside water-head pressure and soil pressure in the antiseepage process, therefore require it that reliable barrier performance and enough intensity are arranged.Can make with any fluid-tight flexible material with certain intensity.For example adopt oilcloth, artificial leather or sheet plastic etc. all can.Preferably film (5) is made three layers, the intermediate layer is impervious barrier (12), and the both sides of impervious barrier (12) are topping (13).Impervious barrier (12) is two layers of agricultural plastic film, the polyethylene agricultural plastic film of 0.1 millimeters thick for example, and topping (13) is the layer of glass woven cloth.Film (5) should splice in advance.When head during greater than 10 meters, 5 meters heads of every increase, impervious barrier (12) increases the layer of polyethylene agricultural film, and the topping of backwater (13) increases the layer of glass woven cloth.Film (5) should splice in advance.Plastic sheeting splices with high-frequency thermocompressor, and glass fabric splices with sewing machine.Spliced optimum size is for long 30 meters, and is wide 20 meters.The seam of the plastic sheeting of impervious barrier (12) the 1-1.5 rice that must stagger each other.If multilayer plastic film, the seam of adjacent two layers of plastic thin films should be orthogonal.Level by impervious barrier that designs (12) and topping (13) changes then, twists in diameter and is not less than on 250 millimeters the steel pipe, so that transportation.
In order to prevent water impact film (5) or unexpected impact damage, on film (5), also answer topped sand gravel overcoat (4), the thickness of overcoat is 0.3-0.5 rice.The sand gravel preferably topped on film (5) with fiberglass braided packed full sand gravel, that sand gravel can dig out with grooving, like this, sand gravel is difficult for running off, and it is more convenient to construct.Its method is to be transported near the water retaining structure upstream face the water surface with the woven bag that ship will be filled sand gravel, pinions woven bag with rope, packet-by-packet puts down, and is good by water alignment code under the diver.
The ground that best implementation condition of the present invention is a water retaining structure is the sand gravel ground, and the depth of water is no more than 2 meters during construction, and pervious layer thickness is no more than 8 meters, and flow rate of water flow is in 1.5 meter per seconds.Not only can be used for the antiseepage of cofferdam ground, also can be used for the antiseepage of water retaining structure grounds such as dike bank, its method is identical with the step of above-mentioned narration.If when construction depth of water big (above 2 meters), or pervious layer too thick (above 8 meters) and do not have large-scale when adopting the grooving of sand ship, also can adopt membrane seepage prevention and cementation to unite the method for use, the method of membrane seepage prevention is identical with the step of above-mentioned narration, just when grooving (6), do not dig pervious layer (7), only dig and adopt the degree of depth that the sand ship can dig.The anti-permeation method of conventional cementation seepage proof curtain is adopted in antiseepage between bottom land (8) and the impervious layer (7).
The present invention contrasts prior art following advantage:
1. good seepage-proof property;
2. simple in structure;
3. the silt particle that is excavated of pumping slot directly is used for filling water retaining structure, has reduced the workload of earth excavation and transportation;
4. easy construction, progress is fast;
5. cost is low, less than using 1/3rd of cement clay grouting curtain antiseepage expense.
Claims (9)
1, the foundation anti-seepage method in a kind of water retaining structure, especially cofferdam is characterized in that described method comprises the following steps:
A. carry out grooving under water (6) in water retaining structure upstream face (2) leg wire of slope (10) outside along leg wire of slope (10),
B. the end face (1) of domatic (11) of the groove that joins with bottom land (8) with water retaining structure upstream face (2) and water retaining structure and upstream face (2) leveling,
C. fluid-tight fexible film (5) is laid in the leveling described in the b. the surface on, promptly be applied to bottom land (8) through domatic (11) of upstream face (2) and groove from the end face (1) of water retaining structure always,
D. go up topped sand gravel overcoat (4) at film (5).
2, method according to claim 1, the degree of depth that it is characterized in that groove (6) is for arriving the impervious layer (7) of ground.
3, method according to claim 1, the degree of depth that it is characterized in that groove (6) is not for arriving the impervious layer (7) of ground.
4,, it is characterized in that described method comprises that also the sand gravel that grooving (6) is dug out fills the step of water retaining structure body (3) according to claim 1 or 2 or 3 described methods.
5, method according to claim 1 is characterized in that described film (5) is an artificial leather.
6, method according to claim 1 is characterized in that described film (5) is an oilcloth.
7, method according to claim 1; it is characterized in that described film (5) is to be made of impervious barrier that is positioned at the intermediate layer (12) and the topping (13) that is positioned at impervious barrier (12) both sides; impervious barrier (12) is an agricultural plastic film, and topping (13) is a glass fiber woven cloth.
8,, it is characterized in that the sand gravel of going up topped overcoat (4) at film (5) is contained in the woven bag according to claim 1,2,3,5,6 or 7 described methods.
9, method according to claim 4 is characterized in that the sand gravel of going up topped overcoat (4) at film (5) is contained in the woven bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88107458 CN1042206A (en) | 1988-10-27 | 1988-10-27 | A kind of foundation anti-seepage method of water retaining structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88107458 CN1042206A (en) | 1988-10-27 | 1988-10-27 | A kind of foundation anti-seepage method of water retaining structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1042206A true CN1042206A (en) | 1990-05-16 |
Family
ID=4834649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88107458 Pending CN1042206A (en) | 1988-10-27 | 1988-10-27 | A kind of foundation anti-seepage method of water retaining structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1042206A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460604C (en) * | 2007-03-14 | 2009-02-11 | 东南大学 | Crack-seam-free seepage-proof stable sweeled ground excavation dyke slope construction method |
| CN102817336A (en) * | 2012-08-17 | 2012-12-12 | 淮河工程有限公司 | Soft foundation overflow dam laminating and permeation-stop technology |
| CN102839629A (en) * | 2012-08-17 | 2012-12-26 | 北京科技大学 | Method and structure for disturbed riverbed seepage-proof governing |
| CN103966976A (en) * | 2014-04-17 | 2014-08-06 | 罗晓晖 | River levee protecting curtain |
| CN106192902A (en) * | 2016-08-29 | 2016-12-07 | 田生 | Dykes and dams device for plugging |
| CN109231683A (en) * | 2018-10-18 | 2019-01-18 | 河海大学 | A kind of Ecosystem restoration system of sewage treatment plant's recycled water for river and lake ecological water supplement |
| CN111519580A (en) * | 2020-06-11 | 2020-08-11 | 中冶沈勘秦皇岛工程设计研究总院有限公司 | Embankment anti-seepage structure and construction method |
-
1988
- 1988-10-27 CN CN 88107458 patent/CN1042206A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460604C (en) * | 2007-03-14 | 2009-02-11 | 东南大学 | Crack-seam-free seepage-proof stable sweeled ground excavation dyke slope construction method |
| CN102817336A (en) * | 2012-08-17 | 2012-12-12 | 淮河工程有限公司 | Soft foundation overflow dam laminating and permeation-stop technology |
| CN102839629A (en) * | 2012-08-17 | 2012-12-26 | 北京科技大学 | Method and structure for disturbed riverbed seepage-proof governing |
| CN102817336B (en) * | 2012-08-17 | 2014-07-30 | 淮河工程有限公司 | Soft foundation overflow dam laminating and permeation-stop technology |
| CN102839629B (en) * | 2012-08-17 | 2015-05-20 | 北京科技大学 | Method and structure for disturbed riverbed seepage-proof governing |
| CN103966976A (en) * | 2014-04-17 | 2014-08-06 | 罗晓晖 | River levee protecting curtain |
| CN106192902A (en) * | 2016-08-29 | 2016-12-07 | 田生 | Dykes and dams device for plugging |
| CN109231683A (en) * | 2018-10-18 | 2019-01-18 | 河海大学 | A kind of Ecosystem restoration system of sewage treatment plant's recycled water for river and lake ecological water supplement |
| CN109231683B (en) * | 2018-10-18 | 2022-02-11 | 河海大学 | Ecological restoration system for sewage treatment plant reclaimed water for river and lake ecological water supplement |
| CN111519580A (en) * | 2020-06-11 | 2020-08-11 | 中冶沈勘秦皇岛工程设计研究总院有限公司 | Embankment anti-seepage structure and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101225656B (en) | Method for rapidly reinforcing ultra-soft soil superficial layer | |
| CN210104706U (en) | Construction structure for treating deep and thick soft foundation by vacuum combined preloading | |
| CN102220757B (en) | Immediate processing method for drainage solidifying of super soft soil shallow surface space | |
| CN104775415B (en) | Blow and fill out workplatform and the constructional method that super soft ground is reinforced fast | |
| CN112343003A (en) | Reinforcing and seepage-proofing treatment method for ultra-shallow soil covering of river bed in tunnel underpass river construction | |
| CN101806057A (en) | Immediate processing method for hydraulic filling ultra-soft foundation by modified vacuum preloading and water-covering preloading | |
| CN1042206A (en) | A kind of foundation anti-seepage method of water retaining structure | |
| CN109083100B (en) | River channel excavation construction process after mud blowing and landing | |
| CN103243704B (en) | Shallow mud foundation treatment method | |
| CN1080010A (en) | The construction method of the composite geo-membrane heart (tiltedly) wall earth dam | |
| CN108894206B (en) | Sandbar sewage pipe and well anti-floating system and construction method | |
| CN114164869B (en) | Magnetic anti-seepage film vertical concealed laying device and water interception curtain construction method | |
| CN111335290B (en) | Offshore artificial island structure suitable for silt foundation and construction method | |
| CN204456151U (en) | Bamboo raft dowel super large cofferdam | |
| CN113062260A (en) | Film bag laying method | |
| CN212248171U (en) | Offshore artificial island structure suitable for silt foundation | |
| CN201317936Y (en) | Drainage structure for vacuum preloading ground treatment in sand drain method | |
| CN103938581B (en) | Batch production manufactures the method for dykes and dams component and fast construction dykes and dams | |
| CN107653842A (en) | A kind of geomembrane reservoir sloping core Seepage method | |
| CN208088278U (en) | A kind of piling prepressing treatment of soft foundation structure | |
| CN210002342U (en) | Coating type plain soil cofferdam structure of kinds of dredging engineering | |
| CN107130644A (en) | Coffering composite geo-membrane and gravelly clay combination against seepage construction method | |
| CN219011277U (en) | Cofferdam construction system based on hydraulic grab bucket grooving and vertical plastic-spreading seepage-proofing | |
| CN217443338U (en) | High-efficient soil and groundwater risk management and control system | |
| CN104594368A (en) | Bamboo raft pile oversized cofferdam and construction method for sea reclamation by adopting same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |