CN103469766A - Method for connecting rigid body and flexible body of dam foundation of reservoir - Google Patents
Method for connecting rigid body and flexible body of dam foundation of reservoir Download PDFInfo
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- CN103469766A CN103469766A CN2013104708448A CN201310470844A CN103469766A CN 103469766 A CN103469766 A CN 103469766A CN 2013104708448 A CN2013104708448 A CN 2013104708448A CN 201310470844 A CN201310470844 A CN 201310470844A CN 103469766 A CN103469766 A CN 103469766A
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Abstract
The invention discloses a method for connecting a rigid body and a flexible body of a dam foundation of a reservoir. A lapping-joint method is adopted. In the process of pouring of a thin concrete cutoff wall, the method is characterized by including the steps of drilling out a first-stage slotted hole and a second-stage slotted hole in the thin concrete cutoff wall completely, burying a concrete pipe in the transition segment between the first-stage slotted hole and the second-stage slotted hole, pouring first-stage concrete into the first-stage slotted hole, breaking the position, close to the second-stage slotted hole, of the concrete pipe to form a cavity, drilling out a perpendicular film-laying segment slotted hole in the position, close to the second-stage slotted hole of the thin concrete cutoff wall, placing a vertical film rolling pipe and then spreading out and laying plastic film, filling slurry into the film-laying segment slotted hole, placing guide pipes with the same number in the two sides of the plastic film respectively, and pouring second-stage concrete below the slurry in the film-laying segment slotted hole. The method for connecting the rigid body and the flexible body of the dam foundation of the reservoir has the advantages of being simple and easy to implement, the joint between the rigid body and the flexible body is good in soundness and tightness, and therefore a tight perpendicular seepage-preventing system can be effectively formed.
Description
Technical field
The present invention relates to a kind of vertical seepage control processing method of Base of Dam of Reservoir, is mainly the processing method be connected with flexible body for rigid body, belongs to the water conservancy construction field.
Background technology
The Base of Dam of Reservoir formation lithology first is transitioned into fine sand, is transitioned into low liquid limit silt again by sand gravel, the design of dam foundation vertical seepage control adopts the thin concrete cut of rigid body and flexible body plastic film to carry out antiseepage usually, for forming antiseepage integral body, bi-material closely need to be connected.But inconvenience is not only implemented in existing method of attachment, and the fastness, the compactness that connect are good not, cause the anti-seepage effect of Base of Dam of Reservoir poor.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of convenient and easy, can effectively improve the Base of Dam of Reservoir rigid body of Base of Dam of Reservoir anti-seepage effect and the method for attachment of flexible body.
In order to realize above-mentioned target, the present invention adopts following technical scheme:
The method of attachment of a kind of Base of Dam of Reservoir rigid body and flexible body, adopt splicing processes, and the slotted eye of the thin concrete cut of lap-joint is set to the second stage of slotted eye, it is characterized in that, when thin concrete cut pouring construction, step is as follows:
At first, the first phase slotted eye of thin concrete cut section, the second stage of slotted eye are all outputed, and buried underground concrete pipe at the transition position of first phase slotted eye and the second stage of slotted eye, then in the first phase slotted eye, build fist stage concrete;
Secondly, after thin concrete cut section fist stage concrete reaches intensity, concrete pipe is broken up to the formation cavity near the second stage of slotted eye direction;
Then, will output near the vertical laying plastic film section slotted eye at thin concrete cut section second phase slotted eye place, and be lowered to vertical volume film pipe and expand plastic film, mud is filled with plastic film mulch section slotted eye;
Next, be lowered to respectively the conduit of equal number in the plastic film both sides;
Finally, build second stage concrete under mud in plastic film mulch section slotted eye.
The method of attachment of aforesaid Base of Dam of Reservoir rigid body and flexible body, is characterized in that, aforementioned the second stage of slotted eye end-to-end distance is 15m from the distance of concrete pipe.
The method of attachment of aforesaid Base of Dam of Reservoir rigid body and flexible body, is characterized in that, aforementioned vertical laying plastic film section is formed with at least long changeover portion of 5m at the end near the second stage of slotted eye, and aforementioned conduit is laid to the changeover portion end from concrete pipe.
The method of attachment of aforesaid Base of Dam of Reservoir rigid body and flexible body, is characterized in that, the fluting thickness of aforementioned thin concrete cut section is 0.3m, and the fluting thickness of vertical laying plastic film section is 0.2m.
The method of attachment of aforesaid Base of Dam of Reservoir rigid body and flexible body, is characterized in that, the fluting thickness of the external diameter of aforementioned concrete pipe and thin concrete cut section is consistent.
The method of attachment of aforesaid Base of Dam of Reservoir rigid body and flexible body, is characterized in that, the thickness of aforementioned plastic film is 0.5mm.
The method of attachment of aforesaid Base of Dam of Reservoir rigid body and flexible body, is characterized in that, one-sided conduit spacing is 3-3.5m.
Usefulness of the present invention is: method of the present invention not only implements comparatively simple, and rigid body (thin concrete cut) is better with fastness, compactness that flexible body (vertical laying plastic film) is connected, can effectively form vertical seepage control system closely.
The accompanying drawing explanation
Fig. 1 buries the schematic diagram of concrete pipe underground in method of the present invention;
Fig. 2 expands the schematic diagram of plastic film in method of the present invention;
Fig. 3 builds the schematic diagram of second stage concrete in method of the present invention.
The implication of Reference numeral in figure: 1-first phase slotted eye, 2-concrete pipe, 3-second phase slotted eye, 4-plastic film mulch section slotted eye, 5-fist stage concrete, 6-changeover portion, 7-conduit, 8-plastic film, 9-second stage concrete.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is done to concrete introduction.
The method of attachment of Base of Dam of Reservoir rigid body of the present invention and flexible body, adopt splicing processes, and the slotted eye of the thin concrete cut of lap-joint is set to the second stage of slotted eye, and when thin concrete cut pouring construction, step is as follows:
At first, with reference to Fig. 1, the first phase slotted eye 1 of thin concrete cut section, the second stage of slotted eye 3 are all outputed, and buried underground concrete pipe 2 at first phase slotted eye 1 and the transition position of the second stage of slotted eye 3, then in first phase slotted eye 1, build fist stage concrete 5.
Secondly, with reference to Fig. 2, after thin concrete cut section fist stage concrete 5 reaches intensity, adopt Churn drill that concrete pipe 2 is broken up to the formation cavity near the direction of the second stage of slotted eye 3.
Then, with reference to Fig. 2, utilize groover to output near the vertical laying plastic film section slotted eye 4 at thin concrete cut section second phase slotted eye 3 places, be lowered to vertical volume film pipe and expand plastic film 8, plastic film 8 walks around that the concrete pipe 2 of chiseling is rear to be expanded along inner tubal wall one side, be taped against the position of chiseling of concrete pipe 2, mud is filled with plastic film mulch section slotted eye 4, and the thickness of plastic film 8 is preferably 0.5mm.
Next, with reference to Fig. 2, be lowered to respectively the conduit 7 of equal number in plastic film 8 both sides, one-sided conduit 7 spacings are preferably 3-3.5m.
Finally, with reference to Fig. 3, under plastic film mulch section slotted eye 4 interior mud, build second stage concrete 9.
As a kind of preferred scheme, the second stage of slotted eye 3 end-to-end distances are 15m from the distance of concrete pipe 2.
In order to guarantee the intact of vertical plastic film section plastic film 8, as a kind of preferred scheme, the vertical laying plastic film section is formed with changeover portion 6 at the end near the second stage of slotted eye 3, and changeover portion 6 at least 5m is long, and conduit 7 is laid to the end of changeover portion 6 from concrete pipe 2.
As a kind of preferred scheme, the fluting thickness of thin concrete cut section is 0.3m, and the fluting thickness of vertical laying plastic film section is 0.2m, and second stage concrete 9 need to all have been built this two parts fluting position.
More preferably, the fluting thickness of the external diameter of concrete pipe 2 and thin concrete cut section is consistent, and the external diameter of concrete pipe 2 is 0.3m.
Be below the case of the successful Application of Base of Dam of Reservoir rigid body of the present invention and flexible body method of attachment:
Case 1: and the fast power Reservoir of Luopu County, field Harrar engineering, the Base of Dam of Reservoir antiseepage, adopt thin concrete cut and vertical plastic spreading, and the connection of bi-material adopts method of the present invention, and the construction simple and convenient, overlap respond well.Safe operation has been for many years for reservoir.
Case 2: its sweat storehouse reinforcement engineering of Keshen Shache County gram gram, the culvert place composite geo-membrane that discharges water is connected with culvert concrete floor abutment wall, adopts connected mode of the present invention, overlaps respond wellly, and reservoir puts into operation.
Case 3: Keshen Shache County requests card according to the Reservoir engineering, and seepage prevention of dam founda adopts deep-mixed pile impervious wall and vertical plastic spreading antiseepage, and the connection of bi-material adopts connected mode of the present invention, overlaps respond wellly, and reservoir comes into operation.
As can be seen here, adopt method of the present invention, can make thin concrete cut and vertical laying plastic film well couple together, form vertical seepage control system closely.
It should be noted that, above-described embodiment does not limit the present invention in any form, and all employings are equal to replaces or technical scheme that the mode of equivalent transformation obtains, all drops in protection scope of the present invention.
Claims (7)
1. the method for attachment of Base of Dam of Reservoir rigid body and flexible body, adopt splicing processes, and the slotted eye of the thin concrete cut of lap-joint is set to the second stage of slotted eye, it is characterized in that, when thin concrete cut pouring construction, step is as follows:
At first, the first phase slotted eye of thin concrete cut section, the second stage of slotted eye are all outputed, and buried underground concrete pipe at the transition position of first phase slotted eye and the second stage of slotted eye, then in the first phase slotted eye, build fist stage concrete;
Secondly, after thin concrete cut section fist stage concrete reaches intensity, concrete pipe is broken up to the formation cavity near the second stage of slotted eye direction;
Then, will output near the vertical laying plastic film section slotted eye at thin concrete cut section second phase slotted eye place, and be lowered to vertical volume film pipe and expand plastic film, mud is filled with plastic film mulch section slotted eye;
Next, be lowered to respectively the conduit of equal number in the plastic film both sides;
Finally, build second stage concrete under mud in plastic film mulch section slotted eye.
2. the method for attachment of Base of Dam of Reservoir rigid body according to claim 1 and flexible body, is characterized in that, described the second stage of slotted eye end-to-end distance is 15m from the distance of concrete pipe.
3. the method for attachment of Base of Dam of Reservoir rigid body according to claim 1 and flexible body, it is characterized in that, described vertical laying plastic film section is formed with at least long changeover portion of 5m at the end near the second stage of slotted eye, and described conduit is laid to the changeover portion end from concrete pipe.
4. the method for attachment of Base of Dam of Reservoir rigid body according to claim 1 and flexible body, is characterized in that, the fluting thickness of described thin concrete cut section is 0.3m, and the fluting thickness of vertical laying plastic film section is 0.2m.
5. the method for attachment of Base of Dam of Reservoir rigid body according to claim 4 and flexible body, is characterized in that, the fluting thickness of the external diameter of described concrete pipe and thin concrete cut section is consistent.
6. the method for attachment of Base of Dam of Reservoir rigid body according to claim 1 and flexible body, is characterized in that, the thickness of described plastic film is 0.5mm.
7. the method for attachment of Base of Dam of Reservoir rigid body according to claim 1 and flexible body, is characterized in that, one-sided conduit spacing is 3-3.5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310470844.8A CN103469766B (en) | 2013-10-10 | 2013-10-10 | Method for connecting rigid body and flexible body of dam foundation of reservoir |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310470844.8A CN103469766B (en) | 2013-10-10 | 2013-10-10 | Method for connecting rigid body and flexible body of dam foundation of reservoir |
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| CN103469766A true CN103469766A (en) | 2013-12-25 |
| CN103469766B CN103469766B (en) | 2015-07-08 |
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| CN201310470844.8A Expired - Fee Related CN103469766B (en) | 2013-10-10 | 2013-10-10 | Method for connecting rigid body and flexible body of dam foundation of reservoir |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109295930A (en) * | 2018-10-12 | 2019-02-01 | 中国电建集团西北勘测设计研究院有限公司 | A kind of face dam anti-seepage method |
| CN109469019A (en) * | 2018-12-13 | 2019-03-15 | 中国电建集团贵阳勘测设计研究院有限公司 | Geomembrane core wall and rigid impervious wall connecting structure |
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| US4266885A (en) * | 1977-07-13 | 1981-05-12 | Ohbayashi-Gumi Ltd. | Method of constructing a continuous cut-off wall and a core of a fill-type dam |
| CN1109538A (en) * | 1994-07-14 | 1995-10-04 | 北京市水利工程基础处理总队 | Technology for jointing concrete anti-leakage wall |
| CN1329688A (en) * | 1998-12-10 | 2002-01-02 | 卡皮泰克意大利有限责任公司 | Embankment dam and waterproofing method |
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| CN102011412A (en) * | 2010-12-31 | 2011-04-13 | 中国水电顾问集团中南勘测设计研究院 | Concrete anti-seepage wall joint |
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2013
- 2013-10-10 CN CN201310470844.8A patent/CN103469766B/en not_active Expired - Fee Related
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| US4266885A (en) * | 1977-07-13 | 1981-05-12 | Ohbayashi-Gumi Ltd. | Method of constructing a continuous cut-off wall and a core of a fill-type dam |
| CN1109538A (en) * | 1994-07-14 | 1995-10-04 | 北京市水利工程基础处理总队 | Technology for jointing concrete anti-leakage wall |
| CN1329688A (en) * | 1998-12-10 | 2002-01-02 | 卡皮泰克意大利有限责任公司 | Embankment dam and waterproofing method |
| CN101158149A (en) * | 2007-06-15 | 2008-04-09 | 中国科学院南京地理与湖泊研究所 | Full-enclosed type flexible deepwater enclosure |
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| Title |
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| 翁建良等: "复合土工膜在王甫洲土石坝工程中的应用", 《土石坝与岩土力学技术研讨会论文集》, 31 December 2001 (2001-12-31) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109295930A (en) * | 2018-10-12 | 2019-02-01 | 中国电建集团西北勘测设计研究院有限公司 | A kind of face dam anti-seepage method |
| CN109469019A (en) * | 2018-12-13 | 2019-03-15 | 中国电建集团贵阳勘测设计研究院有限公司 | Geomembrane core wall and rigid impervious wall connecting structure |
| CN109469019B (en) * | 2018-12-13 | 2024-03-19 | 中国电建集团贵阳勘测设计研究院有限公司 | Geomembrane core wall and rigid impervious wall connection structure |
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| CN103469766B (en) | 2015-07-08 |
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