CN111549725A - Waterproof horizontal water leakage structure for roller compacted concrete dam intermittent layer in severe cold area - Google Patents
Waterproof horizontal water leakage structure for roller compacted concrete dam intermittent layer in severe cold area Download PDFInfo
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- CN111549725A CN111549725A CN202010474880.1A CN202010474880A CN111549725A CN 111549725 A CN111549725 A CN 111549725A CN 202010474880 A CN202010474880 A CN 202010474880A CN 111549725 A CN111549725 A CN 111549725A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000011382 roller-compacted concrete Substances 0.000 title claims abstract description 16
- 239000004567 concrete Substances 0.000 claims abstract description 43
- 239000004927 clay Substances 0.000 claims abstract description 22
- 239000004746 geotextile Substances 0.000 claims abstract description 16
- 239000011178 precast concrete Substances 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 4
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 238000005336 cracking Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000010419 fine particle Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005266 casting Methods 0.000 description 3
- 235000006040 Prunus persica var persica Nutrition 0.000 description 1
- 240000006413 Prunus persica var. persica Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a waterproof horizontal water leakage structure for an intermittent layer of a roller compacted concrete dam in a severe cold region, which comprises a lower layer of a first-cast concrete layer, an upper layer of a second-cast concrete layer cast on the upper part of the lower layer of the first-cast concrete layer, a possible horizontal opening crack existing between the lower layer of the first-cast concrete layer and the upper layer of the second-cast concrete layer, a reserved groove arranged before the upper layer of the second-cast concrete layer is cast on the lower layer of the first-cast concrete layer, geotextile arranged near the downstream side in the reserved groove, and clay backfilled in the reserved groove. The structure effectively prevents the water leakage of the dam body when water flat opening cracks exist through clay backfilled in the reserved groove, and has the advantages of convenient construction, small investment and good effect.
Description
Technical Field
The invention relates to a waterproof horizontal water leakage structure for an intermittent layer of a roller compacted concrete dam in a severe cold area.
Background
When a roller compacted concrete gravity dam is built in a severe cold area, cracks often appear due to severe weather conditions, such as cold, hot, wind and dry. The cold is that the average temperature per year in a severe cold area is very low, the average temperature per month in winter is below-10 ℃, the cold tide is frequent all the year round, and the temperature difference between day and night is large; "Hot" means that the temperature is high in summer, and the average temperature is about 20 ℃ in summer; wind refers to severe cold areas with strong wind power, strong wind speed and easy evaporation of water; the term "dry" refers to the climate dryness in spring and autumn in alpine regions, and these climate characteristics are extremely unfavorable for the temperature control and crack prevention of roller compacted concrete. The stable temperature of the dam body is low due to low annual average temperature, and the highest temperature of concrete poured in summer is high, so that the temperature difference of the dam foundation is large (often exceeding the specification), and foundation penetrating cracks are often generated due to large temperature difference of the foundation; the cold tide is frequent all the year round, the temperature difference between day and night is large, and the concrete poured first and the concrete poured later form large temperature difference due to the existence of the intermission period, so that horizontal cracks appear, and the water leakage of the dam body is further caused. Research shows that the tensile strength between horizontal layers is only 41-86% of that of the original concrete, so that the horizontal cracking phenomenon is easy to form. In engineering practice, horizontal cracks appear in an upper static dam of the United states, a Yuchuan dam of Japan, a Guanyin pavilion dam of Liaoning, a Songyue dam, a Manchentai dam, a Hebei peach forest mouth dam, a Chinese iris river mouth dam, a Xinjiang Duoli dam and the like, and water leakage of a dam body is caused, so that the problems are urgently solved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a waterproof horizontal water leakage structure of an intermittent layer of a roller compacted concrete dam in a severe cold region.
The technical scheme of the invention is as follows:
a waterproof horizontal water leakage structure of an intermittent layer of a roller compacted concrete dam in a severe cold region comprises a lower layer cast-in-advance concrete layer 1, an upper layer cast-in-advance concrete layer 2, a horizontal cracking seam 3, a reserved groove 4, clay 5 and geotextile 6;
a reserved groove 4 is formed in the lower precast concrete layer 1, geotextile 6 is laid in the reserved groove 4 and filled with clay 5, and the geotextile 6 is used for preventing fine particles in the clay 5 from being taken away to play a role in reverse filtration protection; the upper part of the lower layer cast-in-advance concrete layer 1 is an upper layer cast-in-advance concrete layer 2, and a horizontal opening crack 3 exists between the upper layer cast-in-advance concrete layer and the lower layer cast-in-advance concrete layer; the clay 5 adapts to temperature stress expansion and deformation between the upper post-cast concrete layer 2 and the lower pre-cast concrete layer 1 due to good plasticity and adaptive deformation capability, so that the function of seepage prevention is achieved.
The invention has the beneficial effects that: the structure effectively prevents the water leakage of the dam body when water flat opening cracks exist through clay backfilled in the reserved groove, and has the advantages of convenient construction, small investment and good effect.
Drawings
FIG. 1 is a structural diagram of horizontal water leakage prevention of an intermittent layer of a roller compacted concrete dam in a severe cold area.
In the figure: 1, firstly pouring a concrete layer on the lower layer; 2, casting a concrete layer on the upper layer; 3 horizontal opening crack; 4, reserving a groove; 5, clay; 6, geotextile.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a severe cold region roller compacted concrete dam intermittent layer waterproof flat water leakage structure, including lower floor cast in advance concrete layer 1, the upper strata cast in advance concrete layer 2 that the intermittent type was poured in advance concrete layer 1 upper portion of lower floor for a period of time, the horizontal opening crack 3 that probably exists between lower floor cast in advance concrete layer 1 and upper strata cast in advance concrete layer 2, reserve groove 4 that sets up before lower floor cast in advance concrete layer 1 cast in advance concrete layer 2 of upper strata, reserve groove 4 inside sets up geotechnological cloth 6 near the downstream side, backfill clay 5 in reserve groove 4 inside.
The upper layer cast-before-casting concrete layer 2 cast on the upper part of the lower layer cast-before-casting concrete layer 1 is intermittently cast for a period of time, and the intermittent time is more than or equal to 7 days;
the size of the reserve tank 4 is 30cm multiplied by 60cm (height multiplied by width), and the width can be properly adjusted according to the dam front water head;
the clay backfilled in the preformed groove 4 has a clay content of more than or equal to 20 percent and a plasticity index of more than or equal to 20 percent, and is preferably heavy loam or heavy silty clay;
the height of the post-cast concrete layer 2 is more than or equal to 30cm by arranging geotextile 6 near the downstream side in the reserved groove 4 and burying the geotextile 6 in the upper layer.
In the present embodiment, the construction is performed according to the following steps: after the lower layer of the first-cast concrete layer is poured, a reserved groove is formed in the lower layer of the first-cast concrete layer, geotextile is laid in the reserved groove, clay is backfilled, and the geotextile is used for preventing fine particles in the clay from being taken away to play a role in reverse filtration protection. The cohesive soil can adapt to the temperature stress expansion deformation between the upper post-cast concrete layer and the lower newly-cast concrete layer due to the good plasticity and the adaptive deformation capability, so that the anti-seepage effect is achieved, and the whole construction is completed.
The above examples are only for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and the scope of the present invention is not limited by the examples, i.e., the equivalent changes or modifications made in the spirit of the present invention disclosed are still within the scope of the present invention.
Claims (6)
1. A waterproof horizontal water leakage structure of an intermittent layer of a roller compacted concrete dam in a severe cold area is characterized by comprising a lower layer cast-in-advance concrete layer (1), an upper layer cast-in-advance concrete layer (2), a horizontal cracking seam (3), a reserved groove (4), clay (5) and geotextile (6);
the lower precast concrete layer (1) is provided with a reserved groove (4), geotextile (6) is laid in the reserved groove (4) and filled with clay (5), and the geotextile (6) is used for preventing fine particles in the clay (5) from being taken away to play a role in reverse filtration protection; the upper part of the lower layer cast-in-advance concrete layer (1) is an upper layer cast-in-advance concrete layer (2), and a horizontal opening crack (3) exists between the upper layer cast-in-advance concrete layer and the upper layer cast-in-advance concrete layer; the clay (5) adapts to temperature stress expansion deformation between the upper post-cast concrete layer (2) and the lower pre-cast concrete layer (1) due to good plasticity and adaptive deformation capability, so that the function of seepage prevention is achieved.
2. The severe cold region roller compacted concrete dam intermittent layer waterproof horizontal water leakage structure according to claim 1, wherein the height x width of the reserve tank (4) is 30cm x 60 cm.
3. The severe cold region roller compacted concrete dam intermittent layer waterproof horizontal water leakage structure as claimed in claim 1 or 2, wherein clay (5) has a clay content of not less than 20% and a plasticity index of not less than 20%.
4. The severe cold region roller compacted concrete dam intermittent layer waterproof horizontal water leakage structure according to claim 3, wherein the clay (5) is heavy loam or heavy silty clay.
5. The severe cold region roller compacted concrete dam intermittent layer waterproof horizontal water leakage structure according to claim 1, 2 or 4, characterized in that a geotextile (6) is arranged near the downstream side in the reserved groove (4), and the height of the cast-in-place concrete layer (2) after the geotextile (6) is embedded into the upper layer is more than or equal to 30 cm.
6. The severe cold region roller compacted concrete dam intermittent layer waterproof horizontal water leakage structure is characterized in that geotextile (6) is arranged in the reserved groove (4) close to the downstream side, and the height of the poured concrete layer (2) after the geotextile (6) is buried in the upper layer is more than or equal to 30 cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010474880.1A CN111549725A (en) | 2020-05-29 | 2020-05-29 | Waterproof horizontal water leakage structure for roller compacted concrete dam intermittent layer in severe cold area |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010474880.1A CN111549725A (en) | 2020-05-29 | 2020-05-29 | Waterproof horizontal water leakage structure for roller compacted concrete dam intermittent layer in severe cold area |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211161A (en) * | 2020-10-27 | 2021-01-12 | 中水北方勘测设计研究有限责任公司 | Method for plugging diversion bottom hole of concrete dam in severe cold area |
| CN114763695A (en) * | 2021-01-14 | 2022-07-19 | 神华神东煤炭集团有限责任公司 | Artificial dam body for underground reservoir and construction method thereof |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1175650A (en) * | 1997-09-25 | 1998-03-11 | 鲁立平 | Impervious form layout and adhesive sealing method for post-pouring zone of basement |
| CN1924203A (en) * | 2006-02-27 | 2007-03-07 | 贵阳铝镁设计研究院 | Connecting method and structure for horizontal impervious layer and drainage vertical shaft of red mud yard |
| KR100750386B1 (en) * | 2006-09-30 | 2007-08-27 | 주식회사 삼안 | Dam concrete injection method |
| CN101463657A (en) * | 2007-12-17 | 2009-06-24 | 贵阳铝镁设计研究院 | Manufacturing method of industrial impounding reservoir |
| CN201334670Y (en) * | 2008-12-17 | 2009-10-28 | 贵阳铝镁设计研究院 | Seepage-proofing structure for tailing stack side slope |
| CN103643656A (en) * | 2013-11-22 | 2014-03-19 | 河海大学 | High rock-fill dam membrane anti-seepage body on deep coverage layer and construction method of high rock-fill dam membrane anti-seepage body |
| CN204385682U (en) * | 2014-12-26 | 2015-06-10 | 李新旺 | A kind of hydraulic engineering dyke seepage control water-stopping structure |
| CN207597441U (en) * | 2017-11-30 | 2018-07-10 | 四川国恒建筑设计有限公司 | A kind of basement side wall horizontal construction joint water proof structure |
| CN109339115A (en) * | 2018-10-31 | 2019-02-15 | 上海市政工程设计研究总院（集团）有限公司 | Seam pattern is stayed in a kind of T-type post-cast strip for hydraulic engineering structures bottom plate |
| CN209011090U (en) * | 2018-08-20 | 2019-06-21 | 云南省红河州水利水电勘察设计研究院 | A kind of hydraulic engineering irrigates, flood control dam |
| CN209129037U (en) * | 2018-09-30 | 2019-07-19 | 珠海市横琴新区建设工程质量检测中心有限公司 | One kind is for high-rise annex bottom plate post-poured strip waterproof structure |
| CN209293209U (en) * | 2018-10-19 | 2019-08-23 | 北京远大洪雨防水工程有限公司 | A kind of waterproof construction of construction joint node |
| CN212248090U (en) * | 2020-05-29 | 2020-12-29 | 大连理工大学 | Waterproof horizontal water leakage structure for roller compacted concrete dam intermittent layer in severe cold area |
-
2020
- 2020-05-29 CN CN202010474880.1A patent/CN111549725A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1175650A (en) * | 1997-09-25 | 1998-03-11 | 鲁立平 | Impervious form layout and adhesive sealing method for post-pouring zone of basement |
| CN1924203A (en) * | 2006-02-27 | 2007-03-07 | 贵阳铝镁设计研究院 | Connecting method and structure for horizontal impervious layer and drainage vertical shaft of red mud yard |
| KR100750386B1 (en) * | 2006-09-30 | 2007-08-27 | 주식회사 삼안 | Dam concrete injection method |
| CN101463657A (en) * | 2007-12-17 | 2009-06-24 | 贵阳铝镁设计研究院 | Manufacturing method of industrial impounding reservoir |
| CN201334670Y (en) * | 2008-12-17 | 2009-10-28 | 贵阳铝镁设计研究院 | Seepage-proofing structure for tailing stack side slope |
| CN103643656A (en) * | 2013-11-22 | 2014-03-19 | 河海大学 | High rock-fill dam membrane anti-seepage body on deep coverage layer and construction method of high rock-fill dam membrane anti-seepage body |
| CN204385682U (en) * | 2014-12-26 | 2015-06-10 | 李新旺 | A kind of hydraulic engineering dyke seepage control water-stopping structure |
| CN207597441U (en) * | 2017-11-30 | 2018-07-10 | 四川国恒建筑设计有限公司 | A kind of basement side wall horizontal construction joint water proof structure |
| CN209011090U (en) * | 2018-08-20 | 2019-06-21 | 云南省红河州水利水电勘察设计研究院 | A kind of hydraulic engineering irrigates, flood control dam |
| CN209129037U (en) * | 2018-09-30 | 2019-07-19 | 珠海市横琴新区建设工程质量检测中心有限公司 | One kind is for high-rise annex bottom plate post-poured strip waterproof structure |
| CN209293209U (en) * | 2018-10-19 | 2019-08-23 | 北京远大洪雨防水工程有限公司 | A kind of waterproof construction of construction joint node |
| CN109339115A (en) * | 2018-10-31 | 2019-02-15 | 上海市政工程设计研究总院（集团）有限公司 | Seam pattern is stayed in a kind of T-type post-cast strip for hydraulic engineering structures bottom plate |
| CN212248090U (en) * | 2020-05-29 | 2020-12-29 | 大连理工大学 | Waterproof horizontal water leakage structure for roller compacted concrete dam intermittent layer in severe cold area |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211161A (en) * | 2020-10-27 | 2021-01-12 | 中水北方勘测设计研究有限责任公司 | Method for plugging diversion bottom hole of concrete dam in severe cold area |
| CN114763695A (en) * | 2021-01-14 | 2022-07-19 | 神华神东煤炭集团有限责任公司 | Artificial dam body for underground reservoir and construction method thereof |
| CN114763695B (en) * | 2021-01-14 | 2024-04-26 | 神华神东煤炭集团有限责任公司 | Artificial dam body of underground reservoir and construction method thereof |
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