CN111636384A - A concrete gravity dam for precipitous river valley topography - Google Patents
A concrete gravity dam for precipitous river valley topography Download PDFInfo
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- CN111636384A CN111636384A CN202010512264.0A CN202010512264A CN111636384A CN 111636384 A CN111636384 A CN 111636384A CN 202010512264 A CN202010512264 A CN 202010512264A CN 111636384 A CN111636384 A CN 111636384A
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- bank
- wall
- guide wall
- right bank
- grouting
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- 230000005484 gravity Effects 0.000 title claims abstract description 19
- 238000012876 topography Methods 0.000 title description 3
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000002035 prolonged effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 15
- 238000004904 shortening Methods 0.000 abstract 1
- 238000009412 basement excavation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/08—Wall dams
- E02B7/10—Gravity dams, i.e. those in which the weight of the structure prevents overturning
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a concrete gravity dam for steep valley landforms, which comprises an original landform line, a right bank and right bank guide wall, a left bank guide wall, a riverbed dam section, a right bank grouting adit, a left bank grouting adit, a right bank slope curtain grouting, a riverbed curtain grouting, a left bank slope curtain grouting, an upstream extension wall, a downstream extension wall and a dam axis. The construction method has the advantages of remarkably reducing the construction difficulty and the engineering quantity of the concrete gravity dam for the steep river valley with the high slope, reducing the construction risk, saving the construction cost and shortening the construction period.
Description
Technical Field
The invention relates to a concrete gravity dam for a steep valley terrain, which is mainly used for reducing the construction difficulty and the engineering quantity of a high-slope steep valley gravity dam, saving the construction cost and reducing the construction risk.
Background
The conventional method for constructing the concrete gravity dam is shown in fig. 1: digging the bank slope to build dam body such as red, blue and green, etc. the method has large digging amount, and the dam body is basically buried in the mountain body after being built, and the elevation of the dam top is lower than that of the two bank slope. The main disadvantages of this method are: firstly, a high side slope is formed in the excavation process; secondly, excavating a blasting easily-disturbed slope bedrock foundation; thirdly, the engineering quantity is large, so that the investment is increased; fourthly, the construction of the high slope is difficult.
Disclosure of Invention
The invention aims to solve the technical problem of providing a concrete gravity dam for a steep valley terrain, which comprises the steps of firstly making a flat field on an original terrain, constructing guide walls of a left bank and a right bank, and forming a toe retaining wall by using the guide walls, so that a riverbed dam section can be vertically excavated in the bank slope direction, and the problems of large excavation and high slope of the conventional gravity dam bank slope dam section are solved. In order to ensure the anti-sliding stability of the pilot wall, the length of the pilot wall along the water flow direction is 10-15 m longer along the upstream and downstream directions of the riverbed dam section. And constructing grouting galleries on the left bank and the right bank while constructing the pilot wall so as to construct a grouting curtain. And after the construction of the pilot wall is finished and the strength reaches 80%, constructing a riverbed dam section. And after the construction of the riverbed dam section is finished, constructing curtain grouting to form a closed seepage-proofing system along the axis of the dam, and finishing the whole project.
The technical scheme of the invention is as follows:
a concrete gravity for steep valley landform comprises an original landform line 1, a right bank pilot wall 2, a left bank pilot wall 3, a riverbed dam section 4, a right bank grouting adit 5, a left bank grouting adit 6, a right bank slope curtain grouting layer 7, a riverbed curtain grouting layer 8, a left bank slope curtain grouting layer 9, an upstream extension wall 10, a downstream extension wall 11 and a dam axis 12;
adding a right bank pilot wall 2 and a left bank pilot wall 3 on the surface of the leveled original terrain line 1, and locating at two sides of a riverbed dam section 4; the right bank pilot wall 2 and the left bank pilot wall 3 are underground continuous walls, the lengths of the right bank pilot wall 2 and the left bank pilot wall 3 in the water flow direction are prolonged by 10-15 m along the upstream and downstream directions of the riverbed dam section 4, the thicknesses of the right bank pilot wall 2 and the left bank pilot wall 3 are 2.5-3.0 m, and the rock penetration depth is 2.0-2.5 m;
a right bank grouting adit 5 and a left bank grouting adit 6 are respectively arranged above the right bank pilot wall 2 and the left bank pilot wall 3;
the strength of the right bank pilot wall 2 and the left bank pilot wall 3 reaches 80%, an upstream extension wall 10 and a downstream extension wall 11 are respectively added along upstream and downstream bank slopes, and the length of the upstream extension wall 10 and the downstream extension wall 11 along water flow is 20-30 m;
a right bank slope curtain grouting layer 7 and a left bank slope curtain grouting layer 9 are respectively added below the right bank grouting adit 5 and the left bank grouting adit 6;
and a bed curtain grouting layer is additionally arranged below the right bank pilot wall 2, the left bank pilot wall 3 and the bed dam section 4.
The invention has the beneficial effects that:
(1) the engineering quantity and the investment are saved;
(2) avoids the problem of high side slope of the traditional gravity dam, especially in the southern rainy region
(3) No high side slope exists, so that landslide in the construction period is avoided, the safety in the construction period is ensured, and the safety in the operation period is also ensured;
(4) the large excavation is avoided, the damage to the environment is far lower than that of the traditional gravity dam, the environment protection and the water and soil conservation are facilitated, and the effect is better in the southern area of the mountain clear water show.
Drawings
Fig. 1 is a view illustrating a conventional concrete gravity dam type structure.
Fig. 2 is a sectional view of a concrete gravity dam of the present invention for use in steep valley terrain.
Fig. 3 is a plan view of a concrete gravity dam version of the present invention for use in steep valley terrain.
In the figure: 1, original terrain line; 2, a right bank pilot wall; 3, a left bank guide wall; 4, a riverbed dam section; grouting and adit on the right bank; 6 grouting and adit on the left bank; 7, grouting a right bank slope curtain; 8, a riverbed curtain grouting layer; 9, grouting left bank slope curtain; 10 an upstream extension wall; 11 downstream expansion walls; 12 dam axis.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
as shown in fig. 2 and 3, the present invention includes an original landform line 1, a right bank pilot wall 2, a left bank pilot wall 3, a riverbed dam section 4, a right bank grouting adit 5, a left bank grouting adit 6, a right bank slope curtain grouting layer 7, a riverbed curtain grouting layer 8, a left bank slope curtain grouting layer 9, an upstream extension wall 10, a downstream extension wall 11, and a dam axis 12.
The concrete gravity dam for the steep valley landform is characterized in that a right bank pilot wall 2 and a left bank pilot wall 3 are constructed after an original landform line 1 is slightly flattened, the right bank pilot wall 2 and the left bank pilot wall 3 are underground continuous walls, the lengths of the right bank pilot wall 2 and the left bank pilot wall 3 in the water flow direction are prolonged by 10-15 m along the upstream and downstream directions of a riverbed dam section 4, the thicknesses of the right bank pilot wall 2 and the left bank pilot wall 3 are 2.5-3.0 m, and the rock-entering depth is 2.0-2.5 m;
the concrete gravity dam type for the steep valley topography can synchronously construct a right bank grouting adit 5 and a left bank grouting adit 6 when a right bank pilot wall 2 and a left bank pilot wall 3 are constructed;
after the construction of the right bank pilot wall 2 and the left bank pilot wall 3 is finished, when the strength reaches 80%, an upstream extension wall 10 and a downstream extension wall 11 are constructed along upstream and downstream bank slopes, and the lengths of the upstream extension wall 10 and the downstream extension wall 11 along water flow are 20-30 m;
the concrete gravity dam type for the steep valley landform is used for constructing the riverbed dam section 4 while constructing the upstream expansion wall 10 and the downstream expansion wall 11.
After the construction is completed, a right bank slope curtain grouting layer 7, a riverbed curtain grouting layer 8 and a left bank slope curtain grouting layer 9 are constructed to form a continuous seepage-proofing structure.
The above-mentioned embodiments 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 carry out the same, and the present invention shall not be limited to the embodiments, i.e. the equivalent changes or modifications made within the spirit of the present invention shall fall within the scope of the present invention.
Claims (1)
1. The concrete gravity for the steep valley landform is characterized by comprising an original landform line (1), a right bank guide wall (2), a left bank guide wall (3), a riverbed dam section (4), a right bank grouting adit (5), a left bank grouting adit (6), a right bank slope curtain grouting layer (7), a riverbed curtain grouting layer (8), a left bank slope curtain grouting layer (9), an upstream extension wall (10), a downstream extension wall (11) and a dam axis (12);
additionally arranging a right bank guide wall (2) and a left bank guide wall (3) on the surface of the leveled original terrain line (1), and locating at two sides of a riverbed dam section (4); the right bank guide wall (2) and the left bank guide wall (3) are underground continuous walls, the lengths of the right bank guide wall (2) and the left bank guide wall (3) in the water flow direction are prolonged by 10-15 m along the upstream and downstream directions of the riverbed dam section (4), the thicknesses of the right bank guide wall (2) and the left bank guide wall (3) are 2.5-3.0 m, and the rock-entering depth is 2.0-2.5 m;
a right bank grouting adit (5) and a left bank grouting adit (6) are respectively arranged above the right bank pilot wall (2) and the left bank pilot wall (3);
the strength of the right bank guide wall (2) and the left bank guide wall (3) reaches 80%, an upstream extension wall (10) and a downstream extension wall (11) are respectively added along upstream and downstream bank slopes, and the length of the upstream extension wall (10) and the downstream extension wall (11) along water flow is 20-30 m;
a right bank slope curtain grouting layer (7) and a left bank slope curtain grouting layer (9) are respectively added below the right bank grouting adit (5) and the left bank grouting adit (6);
a riverbed curtain grouting layer is additionally arranged below the right bank guide wall (2), the left bank guide wall (3) and the riverbed dam section (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010512264.0A CN111636384B (en) | 2020-06-08 | 2020-06-08 | Concrete gravity dam for steep valley topography |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010512264.0A CN111636384B (en) | 2020-06-08 | 2020-06-08 | Concrete gravity dam for steep valley topography |
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| Publication Number | Publication Date |
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| CN111636384A true CN111636384A (en) | 2020-09-08 |
| CN111636384B CN111636384B (en) | 2024-06-14 |
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|---|---|---|---|---|
| JP2002096041A (en) * | 2000-09-21 | 2002-04-02 | Ohbayashi Corp | Method of repairing impervious sheet |
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| CN203320494U (en) * | 2013-07-01 | 2013-12-04 | 中国水电顾问集团中南勘测设计研究院 | High dam spillway foundation drainage system |
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| CN107165129A (en) * | 2017-07-19 | 2017-09-15 | 中国电建集团成都勘测设计研究院有限公司 | Canyon Area high dam hydroelectric project slag ditch-water flow guide system |
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| CN109371934A (en) * | 2018-11-30 | 2019-02-22 | 中国电建集团成都勘测设计研究院有限公司 | Dam-type power plant construction diversion structure |
| CN209760168U (en) * | 2019-01-16 | 2019-12-10 | 重庆文理学院 | Reinforced concrete gravity dam capable of resisting debris flow impact |
| CN212388474U (en) * | 2020-06-08 | 2021-01-22 | 大连理工大学 | A concrete gravity dam for precipitous river valley topography |
-
2020
- 2020-06-08 CN CN202010512264.0A patent/CN111636384B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002096041A (en) * | 2000-09-21 | 2002-04-02 | Ohbayashi Corp | Method of repairing impervious sheet |
| DE102005013319A1 (en) * | 2004-05-27 | 2005-12-22 | Weber, Erich, Dipl.-Ing. (FH) | Flood water regulating system for mountain region, has retaining cistern with opening that is covered with protective crests, which include fingers that rotate around their longitudinal axis to open and close openings |
| CN203420262U (en) * | 2013-05-24 | 2014-02-05 | 中国水电顾问集团北京勘测设计研究院 | Medium and high speed cable crane system for high and steep dam abutment concrete dam of narrow river valley |
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| CN111636384B (en) | 2024-06-14 |
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