CN101285305A - Folded line type concrete panel rock-fill dam and construction method thereof - Google Patents
Folded line type concrete panel rock-fill dam and construction method thereof Download PDFInfo
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- CN101285305A CN101285305A CN 200810062182 CN200810062182A CN101285305A CN 101285305 A CN101285305 A CN 101285305A CN 200810062182 CN200810062182 CN 200810062182 CN 200810062182 A CN200810062182 A CN 200810062182A CN 101285305 A CN101285305 A CN 101285305A
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Abstract
The invention relates to a broken line type concrete face rock-fill dam and a method for constructing the same. The technical problem resolved by the invention is to provide a face rock-fill dam and a method for constructing the same, by which the dam body can be designed in accordance with topographic and geologic conditions on site so as to lower the engineering risk, save the engineering cost and widen the adaptive condition of the dam type of the rock-fill dam for different topographic and geologic conditions. The technical proposal resolving the problem is as follows: the broken line type concrete face rock-fill dam comprises a dam axis and faceplates with reinforced concrete structures; the rock-fill dam is characterized in that the dam axis is of the broken line, and faceplates built along the dam axis also form a shape of a broken line, and turning parts of two faceplates are in transitional connection by a connecting plate with a reinforced concrete structure, and peripheries of faceplates are provided with toe boards, and a cushion course, a transitional layer and the rock-fill body are arranged below the faceplates. The broken line type concrete face rock-fill dam and the method can be applied to a reinforced concrete face dam project which can not be in straight-line type arrangement along the direction vertical to the river due to specially topographic and geologic conditions.
Description
Technical field
The present invention relates to a kind of folded line type concrete panel rock-fill dam and job practices thereof.Be applicable to extreme terrain, geological conditions, can't carry out the reinforced concrete face rockfill dam engineering of arranging perpendicular to the linear pattern of river direction.
Background technology
When barrage adopts reinforced concrete face rockfill dam, often adopt perpendicular to river direction or with the river direction face dam arranged of the linear pattern of oblique slightly, upstream face is a single plane, it requires roughly symmetry of two sides landform, geological conditions is the same substantially, guarantees that the face dam toe board can be seated on the effective basis.But the Nature orographic condition varies, and difference is arranged during the geological conditions of two sides, and the face dam form that only relies on linear pattern to arrange is difficult to satisfy the needs of actual conditions.
In recent years along with rolling the enrockment technology rapid development, the settling amount of rock dam body is very little, and major part occurs in the construction period, can guarantee that broken line junction panel deformation is controlled within the effective range, and adopt rational sealing design to be fit to panel seam and the distortion of all side seams, destroy to guarantee the unlikely generation of panel and sealing.Therefore, as long as take the corresponding engineering measure, it is feasible that the face dam axis of dam is arranged as broken line type.According to investigations, the high rock of the broken line type that builds up both at home and abroad is (more than the 100m) seldom, all is in the starting stage at home and abroad, and domestic urgent need is carried out the research and the practice of this respect.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of folded line type concrete panel rock-fill dam and job practices thereof are provided, carry out dam body design according to site contour, geological conditions with being intended to suit measures to local conditions, thereby reduce engineering risk, save construction investment, widen the condition of compatibility of loose rock dam dam type on the different terrain geological conditions.
The technical solution adopted in the present invention is: folded line type concrete panel rock-fill dam, panel with the axis of dam and reinforced concrete structure, it is characterized in that the described axis of dam is a broken line, the panel of building along the axis of dam also forms broken line shape, use the junction plate transition of reinforced concrete structure to connect in the turning point of two panels, at the periphery of panel the toe board of reinforced concrete structure is set, establishes bed course, transition zone and rockfill below the panel.
The thickness of described panel is: top 0.3m, the bottom is with highly changing by calculating formula d=0.3+0.0035H, wherein, H for calculate section to the panel top vertical distance, unit is m.
Described junction plate and both sides panel are by all side seam settings, and the wide 12mm of all side seams establishes sealing three roads, and W type copper seal is established in the bottom, and compound neoprene rod is established at the middle part, and the SR plastic material is established at the top, and outside with the protection of SR protection cover plate, sealing is established rubber bar.
The job practices of a kind of folded line type concrete panel rock-fill dam of the present invention may further comprise the steps:
1) determines toe board position, two sides according to geological prospecting, toe board is seated in preferably on the basement rock that thickness and width determine according to head, establish fixed and curtain grouting, and be connected with the basis with dowel;
2) select the axis of dam (1) turnover position according to the two sides geological condition by guaranteeing that dam body is stable, engineering quantity is more excellent, invest less principle;
3) determine the both sides panel in the turning point with the junction plate transition, the junction plate width is identical with the parting width of panel, establish sealing three roads in the junction by all side seams, W type copper seal is established in the bottom, compound neoprene rod is established at the middle part, the SR plastic material is established at the top, and outside with the protection of SR protection cover plate, sealing is established rubber bar;
4) determine plate thickness: top 0.3m, the bottom is with highly changing by calculating formula d=0.3+0.0035H, wherein, H for calculate section to the panel top vertical distance, unit is m; Junction plate thickness is identical with plate thickness or increase thickness 10cm to increase rigidity;
5) fill Bian Qingpo on limit, covering layer position, two sides, can be with digging machine clearly to exceeding, bedding material and transition material are filled out to rockfill in the shop then, and the transition of transition material is filled out in shop, back, the clear in advance slope of rock segment base plinth;
6) after dam embankment is finished, carry out slope mortar Gu Po construction, excavate the mortar backfill certain thickness sand asphalt of the below of panel and junction plate seam crossing when panel is built;
7) in the certain altitude above toe board earlier with the flyash bedding, again with the silty clay soil bedding, use the rock ballast bedding at last;
8) dam body carries out surperficial concreting behind settlement stability, builds junction plate earlier, the both sides panel that after-pouring links to each other with junction plate.
The invention has the beneficial effects as follows: the reinforced concrete face rockfill dam of broken line type, because the axis of dam is a broken line, concrete slab is not a single plane, can form by two even a plurality of plane, can select toe board position preferably according to site contour, geological conditions with suiting measures to local conditions, and the axis of dam carries out the broken line layout along the needs of toe board, and the two sides covering layer carries out covering in dam body as a dam body part after the necessary processing.Problems such as side slope unstability or difficult treatment are avoided in the specially treated that can avoid two sides must carry out because of complex geological conditions like this.Shorten the construction period simultaneously, save construction investment, the benefit of generating performance in advance.The domestic similar face dam engineering axis of dam is selected to have bigger directive significance.
Description of drawings
Fig. 1 is a layout plan of the present invention.
Fig. 2 is a sectional drawing of the present invention.
Fig. 3 is the arrangement diagram of panel of the present invention and junction plate joint seal.
The specific embodiment
As shown in Figure 1, the present embodiment folded line type concrete panel rock-fill dam, panel 2 with the axis of dam 1 and reinforced concrete structure, these routine characteristics are that the axis of dam 1 is a broken line, the panel of building along the axis of dam 2 also forms broken line shape, junction plate 3 transition in the turning point of two panels with reinforced concrete structure connect, and the toe board 4 of reinforced concrete structure is set in the downstream of panel, establish bed course 5, transition zone 6 and rockfill 15 below the panel.
The thickness of described panel 2 is: top 0.3m, the bottom is with highly changing by calculating formula d=0.3+0.0035H, wherein, H for calculate section to the panel top vertical distance, unit is m.
The job practices of this routine folded line type concrete panel rock-fill dam may further comprise the steps:
1) determines two sides toe board 4 positions according to geological prospecting, toe board is seated in preferably on the basement rock that thickness and width determine according to head, establish fixed and curtain grouting, and be connected with the basis with dowel.
2) select the axis of dam 1 turnover position according to the two sides geological condition by guaranteeing that dam body is stable, engineering quantity is more excellent, invest less principle, this routine axis of dam corner is 145 °.
3) determine both sides panel 2 in the turning point with junction plate 3 transition, the width of junction plate so that the construction sliding formwork determine, as this example by unified panel parting width 12m definite (on panel, a vertical parting is just arranged) every certain width.As shown in Figure 3, by all side seams three road sealings are set in the junction of panel 2 and junction plate 3, W type copper seal 7 is established in the bottom, and compound neoprene rod 8 is established at the middle part, and SR plastic material 9 is established at the top, and outside with the protection of SR protection cover plate, sealing is established rubber bar.
4) determine panel 2 thickness: top 0.3m, the bottom is with highly changing by calculating formula d=0.3+0.0035H, wherein, H for calculate section to the panel top vertical distance, unit is m.Junction plate 3 thickness can be identical with plate thickness, also can increase thickness 10cm to increase rigidity.
5) as shown in Figure 2, for preventing two sides covering layer 12 slumpings, fill Bian Qingpo on limit, covering layer position, two sides, the clear in advance high about 5m in slope, with digging machine can be clearly to exceeding, main peat, planting soil and the loosening ground of removing the surface, the shop is filled out bedding material 13 (materials is identical with the material of bed course 5 then, the wide 80cm of level) with transition material 14 (materials are identical with the material of transition zone 6, the wide 200cm of level) to rockfill 15.Transition material 14 (the wide 100cm of level) transition is filled out in shop, back, the clear in advance slope of rock segment base plinth.
6) after dam embankment is finished, carry out slope mortar Gu Po construction, see also Fig. 3, excavate the mortar backfill certain thickness sand asphalt 11 of the below of panel 2 and junction plate 3 seam crossings when panel is built.
7) in the certain altitude above toe board 4 earlier with flyash 16 beddings, again with silty clay soil 17 beddings, use rock ballast 18 beddings at last.
8) dam body carries out surperficial concreting behind settlement stability, builds junction plate 3 earlier, the both sides panel 2 that after-pouring links to each other with junction plate.
Claims (4)
1, a kind of folded line type concrete panel rock-fill dam, panel (2) with the axis of dam (1) and reinforced concrete structure, it is characterized in that: the described axis of dam (1) is a broken line, the panel of building along the axis of dam (2) also forms broken line shape, use junction plate (3) transition of reinforced concrete structure to connect in the turning point of two panels, at panel periphery the toe board (4) of reinforced concrete structure is set, establishes bed course (5), transition zone (6) and rockfill (15) below the panel.
2, folded line type concrete panel rock-fill dam according to claim 1, the thickness that it is characterized in that described panel (2) is: top 0.3m, and the bottom is with highly changing by calculating formula d=0.3+0.0035H, wherein, H for calculate section to the panel top vertical distance, unit is m.
3, folded line type concrete panel rock-fill dam according to claim 1; it is characterized in that: described junction plate (3) is pressed all side seam settings with both sides panel (2); the wide 12mm of week side seam; if sealing three roads; W type copper seal (7) is established in the bottom, and compound neoprene rod (8) is established at the middle part, and SR plastic material (9) is established at the top; outside with the protection of SR protection cover plate, sealing is established rubber bar.
4, a kind of job practices of folded line type concrete panel rock-fill dam is characterized in that this method may further comprise the steps:
1) determines two sides toe board (4) position according to geological prospecting, toe board is seated in preferably on the basement rock that thickness and width determine according to head, establish fixed and curtain grouting, and be connected with the basis with dowel;
2) select the axis of dam (1) turnover position according to the two sides geological condition by guaranteeing that dam body is stable, engineering quantity is more excellent, invest less principle;
3) determine both sides panel (2) in the turning point with junction plate (3) transition, the junction plate width is identical with the parting width of panel, establish sealing three roads in the junction by all side seams, W type copper seal (7) is established in the bottom, compound neoprene rod (8) is established at the middle part, SR plastic material (9) is established at the top, and outside with the protection of SR protection cover plate, sealing is established rubber bar;
4) determine panel (2) thickness: top 0.3m, the bottom is with highly changing by calculating formula d=0.3+0.0035H, wherein, H for calculate section to the panel top vertical distance, unit is m; Junction plate (3) thickness is identical with plate thickness or increase thickness 10cm to increase rigidity;
5) fill Bian Qingpo on two sides covering layer (12) limit, position, can be with digging machine clearly to exceeding, bedding material (13) and transition material (14) are filled out to rockfill (15) in the shop then, and back, the clear in advance slope of rock segment base plinth is spread and is filled out transition material (14) transition;
6) after dam embankment is finished, carry out slope mortar Gu Po construction, excavate mortar in the panel (2) and the below of junction plate (3) seam crossing when panel is built and consolidate sloping backfill certain thickness sand asphalt (11);
7) in the certain altitude of toe board (4) top first with flyash (16) bedding, again use silty clay soil (17) bedding, use rock ballast (18) bedding at last;
8) dam body carries out surperficial concreting behind settlement stability, builds junction plate (3) earlier, the both sides panel (2) that after-pouring links to each other with junction plate.
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| CN200810062182XA CN101285305B (en) | 2008-06-04 | 2008-06-04 | Folded line type concrete panel rock-fill dam and construction method thereof |
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| CN200810062182XA CN101285305B (en) | 2008-06-04 | 2008-06-04 | Folded line type concrete panel rock-fill dam and construction method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446081B (en) * | 2008-12-03 | 2010-07-14 | 河海大学 | Concrete face for rockfill dam |
| CN101906768A (en) * | 2010-08-19 | 2010-12-08 | 中国水电建设集团十五工程局有限公司 | Panel construction method of concrete faced rock-fill dam |
| CN102155004A (en) * | 2011-03-16 | 2011-08-17 | 华北水利水电学院 | Steel structure combined-type sandwich steel plate rock-fill dam |
| CN102155005A (en) * | 2011-03-16 | 2011-08-17 | 华北水利水电学院 | Steel structural panel sand gravel dam |
| CN102296571A (en) * | 2011-06-08 | 2011-12-28 | 西安理工大学 | Rock-fill dam of anchoring panel and construction method thereof |
| CN101691744B (en) * | 2009-09-30 | 2012-02-01 | 葛洲坝集团第五工程有限公司 | Overflow pre-settling construction method for concrete face rock-fill dam |
| CN101718086B (en) * | 2009-11-05 | 2012-04-11 | 河海大学 | Concrete-enrockment mixed dam and construction method thereof |
| CN102587329A (en) * | 2012-04-12 | 2012-07-18 | 河海大学 | Arched combined faceplate for earth-rock dam and construction method thereof |
| CN103352445A (en) * | 2013-06-17 | 2013-10-16 | 黄河勘测规划设计有限公司 | Water stopping construction method for horizontal seam of face rock-fill dam panel |
| CN104846791A (en) * | 2015-05-27 | 2015-08-19 | 中国电建集团华东勘测设计研究院有限公司 | Construction method of concrete connecting slabs of broken-line face rockfill dam |
| CN106958257A (en) * | 2017-04-28 | 2017-07-18 | 中国电建集团贵阳勘测设计研究院有限公司 | It is a kind of to prevent the construction method and structure of plinth of concrete facing dam differential settlement |
| CN109356103A (en) * | 2018-11-30 | 2019-02-19 | 中国电建集团华东勘测设计研究院有限公司 | Reduce the dam structure and implementation method of superelevation rock panel extrusion stress |
| CN111287150A (en) * | 2020-03-24 | 2020-06-16 | 新疆农业大学 | Vertical broken line type panel combined dam and construction method thereof |
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2008
- 2008-06-04 CN CN200810062182XA patent/CN101285305B/en active Active
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446081B (en) * | 2008-12-03 | 2010-07-14 | 河海大学 | Concrete face for rockfill dam |
| CN101691744B (en) * | 2009-09-30 | 2012-02-01 | 葛洲坝集团第五工程有限公司 | Overflow pre-settling construction method for concrete face rock-fill dam |
| CN101718086B (en) * | 2009-11-05 | 2012-04-11 | 河海大学 | Concrete-enrockment mixed dam and construction method thereof |
| CN101906768A (en) * | 2010-08-19 | 2010-12-08 | 中国水电建设集团十五工程局有限公司 | Panel construction method of concrete faced rock-fill dam |
| CN102155005B (en) * | 2011-03-16 | 2012-11-07 | 华北水利水电学院 | Steel structural panel sand gravel dam |
| CN102155004A (en) * | 2011-03-16 | 2011-08-17 | 华北水利水电学院 | Steel structure combined-type sandwich steel plate rock-fill dam |
| CN102155005A (en) * | 2011-03-16 | 2011-08-17 | 华北水利水电学院 | Steel structural panel sand gravel dam |
| CN102155004B (en) * | 2011-03-16 | 2012-11-07 | 华北水利水电学院 | Steel structure combined-type sandwich steel plate rock-fill dam |
| CN102296571A (en) * | 2011-06-08 | 2011-12-28 | 西安理工大学 | Rock-fill dam of anchoring panel and construction method thereof |
| CN102296571B (en) * | 2011-06-08 | 2013-05-08 | 西安理工大学 | Rock-fill dam of anchoring panel and construction method thereof |
| CN102587329A (en) * | 2012-04-12 | 2012-07-18 | 河海大学 | Arched combined faceplate for earth-rock dam and construction method thereof |
| CN103352445A (en) * | 2013-06-17 | 2013-10-16 | 黄河勘测规划设计有限公司 | Water stopping construction method for horizontal seam of face rock-fill dam panel |
| CN104846791A (en) * | 2015-05-27 | 2015-08-19 | 中国电建集团华东勘测设计研究院有限公司 | Construction method of concrete connecting slabs of broken-line face rockfill dam |
| CN106958257A (en) * | 2017-04-28 | 2017-07-18 | 中国电建集团贵阳勘测设计研究院有限公司 | It is a kind of to prevent the construction method and structure of plinth of concrete facing dam differential settlement |
| CN109356103A (en) * | 2018-11-30 | 2019-02-19 | 中国电建集团华东勘测设计研究院有限公司 | Reduce the dam structure and implementation method of superelevation rock panel extrusion stress |
| CN109356103B (en) * | 2018-11-30 | 2023-11-07 | 中国电建集团华东勘测设计研究院有限公司 | Dam body structure for reducing extrusion stress of ultra-high concrete face rockfill dam panel and implementation method |
| CN111287150A (en) * | 2020-03-24 | 2020-06-16 | 新疆农业大学 | Vertical broken line type panel combined dam and construction method thereof |
| CN111287150B (en) * | 2020-03-24 | 2021-09-10 | 新疆农业大学 | Vertical broken line type panel combined dam and construction method thereof |
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| CN101285305B (en) | 2010-08-18 |
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