CN201074314Y - Reservoir bottom seepage-control structure - Google Patents
Reservoir bottom seepage-control structure Download PDFInfo
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- CN201074314Y CN201074314Y CNU2007200369914U CN200720036991U CN201074314Y CN 201074314 Y CN201074314 Y CN 201074314Y CN U2007200369914 U CNU2007200369914 U CN U2007200369914U CN 200720036991 U CN200720036991 U CN 200720036991U CN 201074314 Y CN201074314 Y CN 201074314Y
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- cloth
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- reservior
- protective layer
- lower protective
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Abstract
The utility model discloses an anti-seepage structure of reservoir bottom, which comprises an upper protection layer, a geotechnical fabric layer, a lower protection layer and a coarsening and leveling layer. The geotechnical fabric layer is the main impervious layer made of monofilm or compound geotechnical fabric, the upper protection layer and the lower protection layer which are used to prevent the geotechnical fabric layer from being destroyed are respectively arranged on the upper and lower sides of the geotechnical fabric layer, and the upper protection layer and the lower protection layer are formed by the covering of clay, the coarsening and leveling layer is disposed on the surface of the reservoir bottom and arranged on the lower side of the lower protection layer, and the coarsening and leveling layer is a ground layer which is treated by removing unobtrusive stones, coarsening and leveling. The geotechnical fabric layer and the upper and lower protection layers which are paved by the utility model are tightly coupled, a closed and solid protection layer is formed, the closed and solid protection layer can effectively prevent the reservoir bottom from leaking, thereby achieving the purposes of water storage of reservoir, irrigation enlargement and groundwater level controlling. The utility model is simple in structure, low in manufacturing cost and wide in adaptability, which can satisfy the requirement for reinforcing and drip-preventing of vast reservoirs in our country.
Description
Technical field
The utility model relates to a kind of reservoir bottom of the reservior anti-leakage structure, and is specifically a kind of by the bottom of the reservior leakage preventing structure of geotextiles in conjunction with the earth material antiseepage.
Background technology
Reservoir is the critical facility of water conservancy industry, has the function of flood control, irrigation, generating, shipping, town and country water supply and aquaculture.Construction of reservoir can be regulated and utilize water resource, and the Xing Li that removes the evil promotes national economic development and assures the safety for life and property of the people.By the end of the end of the year in 2000 statistical information table bright, seat surplus all kinds of reservoirs 8.5 ten thousand has been built in the whole nation, wherein large reservoir is 420,2704 of medium-sized reservoirs, nearly 8.2 ten thousand of small reservoir, aggregate storage capacity reaches 5,183 hundred million m
3These existing reservoirs also exist problems such as potential safety hazard, seepage are serious in performance huge flood control and emerging sharp benefit.The present most existing reservoir of China is built during the Great Leap Forward age and the ten years of turmoil, owing to lack scientism, the engineering flood control standard is low greatly, and construction quality is poor, becomes dangerously weak reseroirs.The operation of these problem reservoirs is directly connected to the safety and the development and national economy of numerous people lives and properties, need carry out reinforcement and antiseepage early and handle.
Reservoir leakage mainly shows as vertical seepage and two kinds of forms of horizontal seepage, and corresponding seepage treatment measure is horizontal leakage preventing and vertical seepage control.In long-term reservoir seepage-proofing engineering practice, at different geological conditionss, explore different reservoir area seepage control measures, as horizontal leakage preventing the antiseepage of clay bedding is arranged; Vertical seepage control has concrete cut antiseepage, high pressure jet grouting antiseepage, fracture grouting antiseepage, dash and grab that the antiseepage of cover well backfill clay, vertical laying plastic film antiseepage, jetting pore-creating concrete wall are anti-to blend thin concrete cut antiseepage etc.Miyun Reservoir has adopted the top concrete cut along the axis of dam, the bottom seepage control measure of curtain grouting; The Luoma Lake embankment has adopted vertical inserting to mould antiseepage; Huaihe River is gone into the seawater road and has been adopted the fracture grouting antiseepage; Reservoir area clay seepage control measure has been taked in domestic large quantities of reservoirs, lakes such as 13 mountain range reservoirs, Yuan-Ming Yuan Imperial Garden Fu Hai, has all obtained good effect.
The Limestone Mountain Areas reservoir leakage seriously is a kind of universal phenomenon, the reservoir thing of the headache of project planner is especially built in the karst, even once be listed in " forbidden zone ", a lot of both at home and abroad because of solving the reservoir that the karst leakage problems scraps, as Hispanic Meng Teha reservoir, because the karst seepage, make 72 meters high dams not play the dash effect and tower on withered river valley.
At present, geomembrane mainly still is used for the dam body seepage treatment.From anti-seepage effect, geomembrane anti-seepage will obviously be better than the antiseepage of clay bedding.In recent years, along with the coating materials kind is brought in constant renewal in and development, construction technology is advanced further, and the geomembrane anti-seepage application is also extensive further.Last century the mid-80, China successively adopts geomembrane to replace the clay core-wall and the sloping core of original barrier performance difference at the Li Jiaqing of Yunnan Province earth dam and the Li Biqiao of Fujian Province reservoir earth dam, Lee family's mountain valley with clumps of trees and bamboo earth dam also adopts the anti-body of filtering in geotextile replacement downstream, dam.After 2 years, Lee family's mountain valley with clumps of trees and bamboo dam facing has been carried out minute inspection, found earth material drying behind the dam, face is dry white except that indivedual yellow pearl spots, formerly moves the domatic infiltration in earth dam downstream in spite of illness and concentrated leakage point all stops infiltration, has reached Expected Results.Pears wall bridge reservoir seepage-proofing has also reached intended purposes.But the bottom of the reservior seepage belongs to vertical seepage, and main relevant with the bottom of the reservior geologic structure, its seepage characteristics are that leakage is big, and it is bigger that difficulty of construction is handled in antiseepage.The antiseepage of clay bedding is generally adopted in the bottom of the reservior antiseepage, at present, does not also use the case history report that geomembrane carries out the antiseepage of reservoir bottom of the reservior.
Summary of the invention
The purpose of this utility model provides a kind of reservoir bottom of the reservior leakage preventing structure; this leakage preventing structure technology is simple, advanced technology, cheap, wide adaptability; it with geotextiles in conjunction with the common bedding of earth material topping in the bottom of the reservior, reach the water conservation retaining, enlarge to irrigate and the purpose of control groundwater table.
The purpose of this utility model is achieved through the following technical solutions:
A kind of reservoir bottom of the reservior leakage preventing structure is characterized in that: it comprises topping, geotechnological layer of cloth, lower protective layer and hacking levelling course, and described geotechnological layer of cloth is main impervious barrier, adopts monofilm or composite earthwork cloth to make; Be used for preventing the last topping of geotechnological layer of cloth damage and the both sides up and down that lower protective layer is separately positioned on geotechnological layer of cloth, last topping and lower protective layer are covered by clay and form; The hacking levelling course is positioned at the surface, bottom of the reservior and is arranged on the downside of lower protective layer, and the hacking levelling course removes for process and abandons lofty stone, hacking flattens the stratum after handling.
Geotechnological layer of cloth described in the utility model is to be made by vinyon cloth.
Described geotextiles is to be made by polyvinyl chloride or gentle felt or malthoid or glass wool cloth.
Described monofilm thickness is at 0.2～0.5mm; Composite earthwork cloth adopts two cloth, one film or a cloth one film mode to make, and the thickness of film is 0.2～0.5mm, and the specification of cloth is 100～500g/m
2
Topping thickness of earth covering 〉=the 30cm that goes up described in the utility model needs compaction in layers, reaches the requirement of setting; Lower protective layer thickness of earth covering 〉=10cm, geotechnological layer of cloth entirely bedding at the lower protective layer upside.
The utility model adopts the four-layer structure form, and the hacking levelling course is a bottom, promptly through smooth surface, bottom of the reservior that hacking was handled; Lower protective layer next-door neighbour bottom of the reservior; Geotechnique's layer of cloth is the intermediate layer, is main impervious barrier; Last topping is positioned at the superiors.The hacking levelling course with naked eyes find less than outstanding stone, whole bottom of the reservior is smooth evenly is as the criterion.Lower protective layer thickness is not less than 10cm, and last protective layer thickness is not less than 30cm, and geotextiles tunic material can be monofilm, also can adopt two cloth, one film, a cloth one film.Contact surface is smooth evenly between each layer.
In the utility model, described earth material can be a clay, and also available other earth materials of no clay situation substitute, as sand, loam.Earth material is gathered materials on the spot.Used coating materials material can be PE, PVC, malthoid, gentle felt or glass wool cloth etc.For increasing geomembrane intensity and avoiding damage, can adopt the composite earthwork cloth form, promptly by geomembrane and geotextile is compound constitutes, geotextile is generally non-woven geotextile.
The utility model can thoroughly block stratum, bottom of the reservior leakage passage by lay geotextiles in the bottom of the reservior, reaches antiseepage, increases the purpose that water resource is supplied with.The coating materials of laying is under the lining of earthing topping protects up and down, and durability is good, and can reach 50 years or more of a specified duration application life.
Geotechnological layer of cloth is main impervious barrier in the utility model; geotextiles is simultaneously born face topping, water pressure and relevant outside quiet, dynamic load; another side is bottom of the reservior levelling course and lower protective layer; geotextiles must have certain thickness and intensity; just can bear pressure and unlikely destruction; but the thickness of cloth directly influences material cost, considers that cost factor coating materials again can not be blocked up.Therefore, the monofilm THICKNESS CONTROL is at 0.2～0.5mm; Composite earthwork cloth adopts two cloth, one film or a cloth one film mode, and the thickness of film is 0.2～0.5mm, and the specification of cloth is 100～500g/m
2
The utility model is aided with the lower protective layer earth material based on geotextiles, and underground water is leaked, controls in the realization antiseepage extremely.In construction, want strict control construction quality, combine closely into an organic whole for four layers, play the purpose of thorough antiseepage.Compared with prior art, the utility model is simple and reasonable, cheap, wide adaptability, and wide application prospect is arranged.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Five, the specific embodiment
A kind of reservoir described in the utility model bottom of the reservior leakage preventing structure, it comprises geotechnological layer of cloth 2, goes up topping 1, lower protective layer 3 and hacking levelling course 4.Geotechnique's layer of cloth 2 is main impervious barrier, adopts composite earthwork cloth to make.Last topping 1 and lower protective layer 3 are used for preventing that geotechnological layer of cloth 2 is damaged; last topping 1 and lower protective layer 3 are separately positioned on the both sides up and down of geotechnological layer of cloth 2; last topping 1 and lower protective layer 3 are covered by clay and form, and also available other earth materials substitute under no clay situation.Hacking levelling course 4 is positioned at the surface, bottom of the reservior and is arranged on the downside of lower protective layer 3, and hacking levelling course 4 removes for process and abandons lofty stone, hacking flattens the stratum after handling.
When construction, last topping 1 thickness of earth covering 〉=30cm, lower protective layer 3 thickness of earth covering 〉=10cm.Geotechnique's layer of cloth 2 entirely bedding adopts monofilm or composite earthwork cloth form on lower protective layer 3, geotechnological coating materials can be the coating materials of PE or other materials, as PVC, gentle felt, malthoid, glass wool cloth etc.The monofilm THICKNESS CONTROL is at 0.2～0.5mm; Composite earthwork cloth adopts two cloth, one film or a cloth one film mode, and the thickness of film is 0.2～0.5mm, and the specification of cloth is 100～500g/m
2In construction, answer strict control construction quality, combine closely into an organic whole for four layers and play the purpose that thorough antiseepage is leaked extremely.
Construction technology and method that bottom of the reservior leakage preventing structure geotechnique layer of cloth is laid are as follows:
At first utilize machinery with the leveling of scraggly bottom of the reservior hacking, gather materials on the spot, take local earth material and on the bottom of the reservior, lay 〉=10cm topping and compacting.After finishing lower protective layer and laying, with the composite earthwork film coiled material along the plane, bottom of the reservior slowly exhibition put to whole bottom of the reservior, the edge will flatten.It is tight not want La Detai during laying, makes it in the raw.For adapting to distortion, should reserve necessary quantity of margin (about 1.5%～5%) and be set to the corrugated wrinkle.The shop film is answered scrutiny after finishing, and whether joint meets the requirements, and it is run-down etc. whether face has, otherwise should in time take corresponding remedial measure, could the backfill topping after qualified.Composite earthwork cloth lay finish after inspection of quality qualified after, even layings 〉=30cm earth material topping on cloth in time, and compacting is in case the destruction of its aging and other factors under the ultraviolet ray irradiation.
The geotextiles that the utility model is laid with protect soil layer to combine closely up and down to form airtight solid topping, can effectively prevent the bottom of the reservior seepage, realize the retaining of reservoir water conservation, enlarge and irrigate and the effect of control groundwater table.The utility model advanced technology, simple in structure, cheap, wide adaptability can satisfy the requirement that the vast little reservoir of China is reinforced leakproof.
Claims (5)
1. reservoir bottom of the reservior leakage preventing structure, it is characterized in that: it comprises topping (1), geotechnological layer of cloth (2), lower protective layer (3) and hacking levelling course (4), and described geotechnological layer of cloth (2) is main impervious barrier, adopts monofilm or composite earthwork cloth to make; Be used for preventing the last topping (1) of geotechnological layer of cloth (2) damage and the both sides up and down that lower protective layer (3) is separately positioned on geotechnological layer of cloth (2), last topping (1) and lower protective layer (3) are covered by clay and form; Hacking levelling course (4) is positioned at the surface, bottom of the reservior and is arranged on the downside of lower protective layer (3), and hacking levelling course (4) removes for process and abandons lofty stone, hacking flattens the stratum after handling.
2. reservoir according to claim 1 bottom of the reservior leakage preventing structure is characterized in that: described geotechnological layer of cloth (2) is to be made by vinyon cloth.
3. reservoir according to claim 1 bottom of the reservior leakage preventing structure is characterized in that: described geotechnological cloth (2) is to be made by polyvinyl chloride or gentle felt or malthoid or glass wool cloth.
4. reservoir according to claim 1 bottom of the reservior leakage preventing structure is characterized in that: described monofilm thickness is at 0.2～0.5mm; Composite earthwork cloth adopts two cloth, one film or a cloth one film mode to make, and the thickness of film is 0.2～0.5mm, and the specification of cloth is 100～500g/m
2
5. reservoir according to claim 1 bottom of the reservior leakage preventing structure is characterized in that: described topping (1) thickness of earth covering 〉=30cm that goes up needs compaction in layers; Lower protective layer (3) thickness of earth covering 〉=10cm, geotechnological layer of cloth (2) entirely bedding at lower protective layer (3) upside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200369914U CN201074314Y (en) | 2007-05-14 | 2007-05-14 | Reservoir bottom seepage-control structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200369914U CN201074314Y (en) | 2007-05-14 | 2007-05-14 | Reservoir bottom seepage-control structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201074314Y true CN201074314Y (en) | 2008-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200369914U Expired - Fee Related CN201074314Y (en) | 2007-05-14 | 2007-05-14 | Reservoir bottom seepage-control structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839629A (en) * | 2012-08-17 | 2012-12-26 | 北京科技大学 | Method and structure for disturbed riverbed seepage-proof governing |
| CN104762924A (en) * | 2015-03-20 | 2015-07-08 | 黄河勘测规划设计有限公司 | Upper storage reservoir basin seepage preventing method |
| CN104846773A (en) * | 2015-04-30 | 2015-08-19 | 北京仁创科技集团有限公司 | Novel reservoir and desert ecological planting system comprising same |
| CN107460863A (en) * | 2017-07-21 | 2017-12-12 | 中铁二院工程集团有限责任公司 | A kind of high-strength compound geotextiles reinforced suitable for Karst Subgrade |
-
2007
- 2007-05-14 CN CNU2007200369914U patent/CN201074314Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839629A (en) * | 2012-08-17 | 2012-12-26 | 北京科技大学 | Method and structure for disturbed riverbed seepage-proof governing |
| CN102839629B (en) * | 2012-08-17 | 2015-05-20 | 北京科技大学 | Method and structure for disturbed riverbed seepage-proof governing |
| CN104762924A (en) * | 2015-03-20 | 2015-07-08 | 黄河勘测规划设计有限公司 | Upper storage reservoir basin seepage preventing method |
| CN104846773A (en) * | 2015-04-30 | 2015-08-19 | 北京仁创科技集团有限公司 | Novel reservoir and desert ecological planting system comprising same |
| CN107460863A (en) * | 2017-07-21 | 2017-12-12 | 中铁二院工程集团有限责任公司 | A kind of high-strength compound geotextiles reinforced suitable for Karst Subgrade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wu Yubai Inventor after: Chen Pinglong Inventor after: Zhang Hua Inventor after: Chen Feng Inventor before: Wu Yubai Inventor before: Chen Longping Inventor before: Zhang Hua Inventor before: Chen Feng |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WU YUBO; CHEN LONGPING; ZHANG HUA; CHEN FENG TO: WU YUBO; CHEN PINGLONG; ZHANG HUA; CHEN FENG |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080618 |