CN103469766B - 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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- CN103469766B CN103469766B CN201310470844.8A CN201310470844A CN103469766B CN 103469766 B CN103469766 B CN 103469766B CN 201310470844 A CN201310470844 A CN 201310470844A CN 103469766 B CN103469766 B CN 103469766B
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- slotted eye
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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, mainly for the processing method of the connection of rigid body and flexible body, belong to water conservancy construction field.
Background technology
Base of Dam of Reservoir formation lithology is first transitioned into fine sand by sand gravel, is transitioned into low liquid limit silt again, 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, overall for forming antiseepage, need bi-material compact siro spinning technology.But existing method of attachment not only implements inconvenience, 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 solve the deficiencies in the prior art, the object of the present invention is to provide a kind of convenient and easy, effectively can 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:
A method of attachment for Base of Dam of Reservoir rigid body and flexible body, adopt splicing processes, 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:
First, the first phase slotted eye of thin concrete cut section, the second stage of slotted eye are all outputed, and bury concrete pipe underground at the transition position of first phase slotted eye and the second stage of slotted eye, then in first phase slotted eye, build fist stage concrete;
Secondly, after thin concrete cut section fist stage concrete reaches intensity, concrete pipe is broken up formation cavity near the second stage of slotted eye direction;
Then, by near the thin concrete cut section second phase slotted eye place vertical laying plastic film section slotted eye output, under enter vertically volume film pipe and expand plastic film, mud fills plastic film mulch section slotted eye;
Next, the conduit of equal number is entered down respectively in plastic film both sides;
Finally, in plastic film mulch section slotted eye, second stage concrete is built under mud.
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, forenamed vertical plastic film mulch section is formed with in the one end near the second stage of slotted eye the changeover portion that at least 5m is long, and forgoing conduit is laid to 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 external diameter of aforementioned concrete pipe and the fluting thickness of thin concrete cut section are 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 fastness, compactness that rigid body (thin concrete cut) is connected with flexible body (vertical laying plastic film) are better, effectively can form vertical seepage control system closely.
Accompanying drawing explanation
Fig. 1 is the schematic diagram burying concrete pipe in method of the present invention underground;
Fig. 2 is the schematic diagram expanding plastic film in method of the present invention;
Fig. 3 is the schematic diagram of building 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.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, concrete introduction is done to the present invention.
The method of attachment of Base of Dam of Reservoir rigid body of the present invention and flexible body, adopt splicing processes, 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:
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 bury concrete pipe 2 underground 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 formation cavity near the direction of the second stage of slotted eye 3.
Then, with reference to Fig. 2, groover is utilized to be outputed by the vertical laying plastic film section slotted eye 4 near the second stage of slotted eye 3 place of thin concrete cut section, under enter vertically volume film pipe and expand plastic film 8, plastic film 8 expands along inner tubal wall side after walking around the concrete pipe 2 chiseled, what be taped against concrete pipe 2 chisels position, and mud fills plastic film mulch section slotted eye 4, and the thickness of plastic film 8 is preferably 0.5mm.
Next, with reference to Fig. 2, enter down the conduit 7 of equal number respectively in plastic film 8 both sides, one-sided conduit 7 spacing is preferably 3-3.5m.
Finally, with reference to Fig. 3, in plastic film mulch section slotted eye 4, second stage concrete 9 is built under mud.
As the preferred scheme of one, the second stage of slotted eye 3 end-to-end distance is 15m from the distance of concrete pipe 2.
In order to ensure the intact of vertical plastic film section plastic film 8, as the preferred scheme of one, vertical laying plastic film section is formed with changeover portion 6 in the one end near the second stage of slotted eye 3, and changeover portion 6 at least 5m is long, and conduit 7 lays the end to changeover portion 6 from concrete pipe 2.
As the preferred scheme of one, 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 needs these two parts fluting position all to build.
More preferably, the external diameter of concrete pipe 2 and the fluting thickness of thin concrete cut section are consistent, and namely 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: with Luopu County, field Harrar fast power Reservoir engineering, Base of Dam of Reservoir antiseepage, adopts thin concrete cut and vertical plastic spreading, and the connection of bi-material adopts method of the present invention, construction simple and convenient, overlaps respond well.Safe operation has been for many years for reservoir.
Case 2: Keshen Shache County gram gram its sweat storehouse Strengthening Project, the culvert place composite geo-membrane that discharges water is connected with culvert concrete floor abutment wall, and adopt connected mode of the present invention, overlap respond well, reservoir puts into operation.
Case 3: Keshen Shache County requests card according to Reservoir engineering, 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, and overlap respond well, reservoir comes into operation.
As can be seen here, adopt method of the present invention, thin concrete cut and vertical laying plastic film can be made well to 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, the technical scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, and 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, 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:
First, the first phase slotted eye of thin concrete cut section, the second stage of slotted eye are all outputed, and bury concrete pipe underground at the transition position of first phase slotted eye and the second stage of slotted eye, then in first phase slotted eye, build fist stage concrete;
Secondly, after thin concrete cut section fist stage concrete reaches intensity, concrete pipe is broken up formation cavity near the second stage of slotted eye direction;
Then, by near the thin concrete cut section second phase slotted eye place vertical laying plastic film section slotted eye output, under enter vertically volume film pipe and expand plastic film, expand along inner tubal wall side after plastic film walks around the concrete pipe chiseled, what be taped against concrete pipe chisels position, and mud fills plastic film mulch section slotted eye;
Next, the conduit of equal number is entered down respectively in plastic film both sides;
Finally, in plastic film mulch section slotted eye, second stage concrete is built under mud.
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 in the one end near the second stage of slotted eye the changeover portion that at least 5m is long, and described conduit is laid to 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 external diameter of described concrete pipe and the fluting thickness of thin concrete cut section are 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 |
|---|---|---|---|
| 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 CN103469766A (en) | 2013-12-25 |
| CN103469766B true 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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Families Citing this family (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 |
| 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101603298A (en) * | 2009-07-02 | 2009-12-16 | 中国水电顾问集团华东勘测设计研究院 | A kind of dam joint structure and job practices thereof |
| 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 |
| CN202830881U (en) * | 2012-09-21 | 2013-03-27 | 中国水电顾问集团华东勘测设计研究院 | Anti-seepage structure for joint of earth-rock dam and other buildings |
-
2013
- 2013-10-10 CN CN201310470844.8A patent/CN103469766B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101603298A (en) * | 2009-07-02 | 2009-12-16 | 中国水电顾问集团华东勘测设计研究院 | A kind of dam joint structure and job practices thereof |
| 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 |
| CN202830881U (en) * | 2012-09-21 | 2013-03-27 | 中国水电顾问集团华东勘测设计研究院 | Anti-seepage structure for joint of earth-rock dam and other buildings |
Non-Patent Citations (1)
| Title |
|---|
| 复合土工膜在王甫洲土石坝工程中的应用;翁建良等;《土石坝与岩土力学技术研讨会论文集》;20011231;第291-295页 * |
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