CN101200885B - Earth-rock dam deep-base seepage-control water-stopping structure for water conservancy and hydropower project - Google Patents
Earth-rock dam deep-base seepage-control water-stopping structure for water conservancy and hydropower project Download PDFInfo
- Publication number
- CN101200885B CN101200885B CN2007102033033A CN200710203303A CN101200885B CN 101200885 B CN101200885 B CN 101200885B CN 2007102033033 A CN2007102033033 A CN 2007102033033A CN 200710203303 A CN200710203303 A CN 200710203303A CN 101200885 B CN101200885 B CN 101200885B
- Authority
- CN
- China
- Prior art keywords
- dam
- seepage
- layer
- impervious barrier
- foundation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The present invention discloses an anti-seepage sealing structure of the deep foundation of the earth-rockfill dam of a water conservancy and hydropower project, which can effectively prevent the seepage of the dam. The anti-seepage sealing structure of the deep foundation of the earth-rockfill dam of the water conservancy and hydropower project includes the anti-seepage layer of the dam body which is stretched from the top of the dam body to the bottom of the dam body, and the anti-seepage layer of a dam base, which is jointed with the anti-seepage layer of the dam body, is arranged in the dam base of the bottom of the dam body. By arranging the anti-seepage layer of the dam base in the dam base, the anti-seepage sealing structure can effectively prevent water seepage in the dam, thus increasing the anti-seepage property and durability of the whole dam and the foundation. Moreover, according to the different distributions of permeable layers from strong to weak in the dam base, the anti-seepage layers are arranged accordingly, thus improving the rationality of the anti-seepage structure, and particularly, the present invention is suitably applied on water conservancy and hydropower dams.
Description
Technical field
The present invention relates to a kind of water conservancy dam, especially relate to a kind of earth-rock dam deep-base seepage-control water-stopping structure for water conservancy and hydropower project.
Background technology
At present, water power belongs to the renewable hydraulic power potentials of clean utilization, developing hydraulic power potentials energetically is China's important energy strategic development policy, the construction of local material dam is with a long history, have gather materials on the spot, advantage such as, easy construction low, low cost to the geology conditional request, be widely adopted, and have abundant design, construction experience.At present, local material dam normally adopts patterns such as clay homogeneous dam, calculous soil core-wall (sloping core) loose rock dam, Concrete Face Rockfill Dam, pitch core-wall (sloping core) loose rock dam in top to the bottom of dam body, be the first-selection of water power dam design selection, be widely used, also very classical.
Reservoir dam is usually directed to complicated basic condition, and statistics shows, is subject to design theory, construction equipment and technology, and rational duration of engineering and economy requirement, and the basic antiseepage degree of depth of early stage reservoir dam generally is controlled in the 70m; Only extend to the dam body bottom and be provided with the dam body seepage layer from the dam body top, and ground layer adopts the ordinary construction design, simply build by laying bricks or stones and form, along with the demand of social practice to the water power deep development, and hydrometeorological condition, the topographic and geologic condition of water power dam experience, existing design can not adapt to existing water power dam to the degree of depth of the dam foundation and the requirement of leakage preventing structure, and the dam deep foundation antiseepage problem that occurs is more and more outstanding.
Summary of the invention
Technical problem to be solved by this invention provides a kind of earth-rock dam deep-base seepage-control water-stopping structure for water conservancy and hydropower project that can effectively prevent seepage of dam.
The technical solution adopted for the present invention to solve the technical problems is: earth-rock dam deep-base seepage-control water-stopping structure for water conservancy and hydropower project, comprise the dam body seepage layer that extends to the dam body bottom from the dam body top, in the dam foundation of dam body bottom, be provided with the seepage prevention of dam founda layer that is connected on the dam body seepage layer, described seepage prevention of dam founda layer comprise be arranged on the upper strata impervious barrier in the dam foundation highly permeable ground layer and be arranged in the dam foundation a little less than the lower floor's impervious barrier in the basic unit dankly, the upper strata impervious barrier connects with the gallery that the lower floor impervious barrier is made by steel concrete and forms integrative-structure, the middle part that described seepage prevention of dam founda layer is arranged on the dam body bottom surface forms the core wall rockfill dam leakage preventing structure, and upper strata impervious barrier and lower floor impervious barrier connect the formation upstream side to connection by gallery.
Further be between upper strata impervious barrier and dam body seepage layer, to be provided with the antiseepage articulamentum that steel concrete is made.
Further be that described lower floor impervious barrier stretches in the impervious foundation layer of the dam foundation.
The invention has the beneficial effects as follows: by the seepage prevention of dam founda layer water seepage prevention structure that in the dam foundation, is provided with, can prevent the seepage of water in the dam effectively, improve whole dam and basic barrier properties and durability; And corresponding impervious barrier being set respectively according to the strong difference that distributes to aquitard in the dam foundation, the reasonability of raising leakage preventing structure is particluarly suitable for promoting the use of above the water conservancy and hydropower dam.
Description of drawings
Fig. 1 is the cross sectional representation that the present invention is used for the rock leakage preventing structure.
Fig. 2 is the cross sectional representation that the present invention is used for the core wall rockfill dam leakage preventing structure.
Fig. 3 is A place among Fig. 1, the local enlarged diagram that the levels impervious barrier forward curtain formula of the dam foundation connects.
Fig. 4 is A place among Fig. 1, the local enlarged diagram that the levels impervious barrier forward contact of the dam foundation connects.
Fig. 5 is A place among Fig. 1, the local enlarged diagram of the embedded connection of levels impervious barrier forward of the dam foundation.
Fig. 6 is B place among Fig. 2, and the levels impervious barrier upstream side of the dam foundation is to the local enlarged diagram that connects a kind of form of structure.
Fig. 7 is B place among Fig. 2, and the levels impervious barrier upstream side of the dam foundation is to the local enlarged diagram that connects another kind of form of structure.
Be labeled as among the figure: dam body 1, dam body seepage layer 2, antiseepage articulamentum 3, upper strata impervious barrier 4, gallery 5, lower floor's impervious barrier 6, highly permeable ground layer 7, in a little less than dankly basic unit 8, impervious foundation layer 9, grouted cut off wall body 10.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
As Fig. 1～shown in Figure 7, earth-rock dam deep-base seepage-control water-stopping structure for water conservancy and hydropower project of the present invention, comprise the dam body seepage layer 2 that extends to dam body 1 bottom from dam body 1 top, in the dam foundation of dam body 1 bottom, be provided with the seepage prevention of dam founda layer that is connected on the dam body seepage layer 2.By being connected in the seepage prevention of dam founda layer on the dam body seepage layer 2, can preventing water in the dam body 1 from leakage of dam foundation, thereby can improve the steadiness of dam foundation.
For more reasonably the seepage prevention of dam founda layer being configured, described seepage prevention of dam founda layer comprise be arranged on the upper strata impervious barrier 4 in the dam foundation highly permeable ground layer 7 and be arranged in the dam foundation a little less than the lower floor's impervious barrier 6 in the basic unit 8 dankly, upper strata impervious barrier 4 connects with the gallery 5 that lower floor impervious barrier 6 is made by steel concrete and forms integrative-structure.Highly permeable ground layer 7 promptly is the dam foundation layer that the water electrode in the dam body 1 easily forms seepage, and in a little less than dankly basic unit 8 more easily form the dam foundation layer of seepage for the water in the dam body 1; Upper strata impervious barrier 4 is used for preventing highly permeable ground layer 7 seepages, can adopt the form of structure of impervious wall, promptly adopts special drilling machine equipment, along the dam
Base antiseepage design axis direction becomes some groove segment units with stratigraphic division, earlier every unit is split into groove during construction, in groove concreting, all groove segment units are linked to be a kind of basic antiseepage processing mode of antiseepage integral body at last; The seepage in the basic unit 8 dankly a little less than lower floor's impervious barrier 6 is used for preventing, can adopt the form of structure of impervious wall, grouted cut off wall, perhaps adopt the composite unit structure form of impervious wall and grouted cut off wall, wherein the form of structure of grouted cut off wall is carried out cement injection (or other) slurries in the stratum internal drilling and by hole wall to periphery stratum, hole for adopting rig, finally forms certain thickness and continuous composite foundation antiseepage body at antiseepage design axis direction; Between upper strata impervious barrier 4 and lower floor's impervious barrier 6, gallery 5 is set, can prevent that sealing is from seepage between upper strata impervious barrier 4 and the lower floor's impervious barrier 6, also be convenient to constructing and keeping in repair of upper strata impervious barrier 4 and lower floor's impervious barrier 6, as direct construction operation in gallery 5 just when constructing lower floor's impervious barrier 6.
Form preferably between the upper strata impervious barrier 4 in dam body seepage layer 2 and the highly permeable ground layer 7 for making that transition connects, between upper strata impervious barrier 4 and dam body seepage layer 2, be provided with the antiseepage articulamentum 3 that steel concrete is made, can prevent seepage between the upper strata impervious barrier 4 of water from dam body seepage layer 2 and highly permeable ground layer 7 in the dam body 1 better.
For preventing seepage better, described lower floor impervious barrier 6 stretches in the impervious foundation layer 9 of the dam foundation, can prevent thoroughly that the dam foundation from producing seepage.
As a kind of preferred implementation of seepage prevention of dam founda layer, the front end that described seepage prevention of dam founda layer is arranged on dam body 1 bottom surface forms the rock leakage preventing structure.The rock leakage preventing structure is applicable to that 1 time ground of dam body is local preferably, because it is arranged on the front end of dam body 1 bottom surface, so the weight of bearing is lighter, its upper strata impervious barrier 4 forms by connecting of gallery 5 with lower floor impervious barrier 6 can adopt forward curtain formula, forward contact or the embedded connection of forward, so that construction operation, can be beneficial to connect by grouted cut off wall body 10 is set with the connection place of gallery 5 at upper strata impervious barrier 4, can prevent seepage better simultaneously.Wherein the upper strata impervious barrier 4 of forward curtain formula does not contact gallery 5, and the forward contact is that upper strata impervious barrier 4 just contacts with gallery 5, and the embedded connection of forward is that upper strata impervious barrier 4 extend in the gallery 5, as Fig. 3～shown in Figure 5.
As the another kind of preferred implementation of seepage prevention of dam founda layer, the middle part that described seepage prevention of dam founda layer is arranged on dam body 1 bottom surface forms the core wall rockfill dam leakage preventing structure.Core wall rockfill dam terrestrial capabilities that leakage preventing structure adapts to is stronger, the antiseepage thickness of its setting is thicker than the rock leakage preventing structure, because it is arranged on the middle part of dam body 1 bottom surface, so the weight of bearing is then bigger than rock, so upper strata impervious barrier 4 and lower floor impervious barrier 6 connect formation employing upstream side to connection by gallery 5, as shown in Figure 5 and Figure 6, can avoid bigger upper strata impervious wall construction load or dam body load action in connecting gallery, causing excessive structural stress or distortion.
Embodiment 1: as Fig. 1, Fig. 3～shown in Figure 5 is the deep foundation water seepage prevention structure that the present invention is used for rock, it is that the boundary is divided into upper strata impervious barrier 4 and 6 two sections of lower floor's impervious barriers that the dark impervious barrier of the dam foundation connects gallery 5 with steel concrete, impervious barrier semi-finals pervious foundation in upper strata adopts the concrete cut antiseepage, ground construction, the dark 80m of big-wall; In lower floor's impervious barrier 6 ground water permeabilitys～a little less than, adopt the antiseepage of 3 irrigation and drainage slurry curtain, construction in gallery 5, curtain depth capacity 120m gos deep into 3～5m in the impervious foundation at the bottom of the curtain; Gallery 5 dead sizes are controlled by curtain construction needs, are defined as 3m * 3.5m.
Embodiment 2: as Fig. 2, Fig. 6～shown in Figure 7 is the deep foundation water seepage prevention structure that the present invention is used for core wall rockfill dam, be on the basis of said structure form, it is that the boundary is divided into upper strata impervious barrier 4 and 6 two sections of lower floor's impervious barriers that the dark antiseepage body of the dam foundation connects gallery 5 with steel concrete, impervious barrier semi-finals pervious foundation in upper strata adopts the concrete cut antiseepage, ground construction, the dark 80m of big-wall; Lower floor's impervious barrier 6 ground water permeabilitys are strong～and medium, preceding 60m adopts concrete cut, back 60m to adopt grouted cut off wall, gos deep into 3～5m in the impervious foundation at the bottom of the curtain; Gallery 5 dead sizes are controlled by the impervious wall construction needs, are defined as 6m * 6.5m.
Claims (3)
1. earth-rock dam deep-base seepage-control water-stopping structure for water conservancy and hydropower project, comprise the dam body seepage layer (2) that extends to dam body (1) bottom from dam body (1) top, in the dam foundation of dam body (1) bottom, be provided with the seepage prevention of dam founda layer that is connected on the dam body seepage layer (2), the lower floor's impervious barrier (6) in the basic unit (8) dankly a little less than described seepage prevention of dam founda layer comprises the upper strata impervious barrier (4) that is arranged in the dam foundation highly permeable ground layer (7) and is arranged in the dam foundation, upper strata impervious barrier (4) connects the formation integrative-structure with the gallery (5) that lower floor's impervious barrier (6) is made by steel concrete, the middle part that described seepage prevention of dam founda layer is arranged on dam body (1) bottom surface forms the core wall rockfill dam leakage preventing structure, it is characterized in that: upper strata impervious barrier (4) forms upstream side to connection with lower floor's impervious barrier (6) by connecting of gallery (5).
2. earth-rock dam deep-base seepage-control water-stopping structure for water conservancy and hydropower project as claimed in claim 1 is characterized in that: be provided with the antiseepage articulamentum (3) that steel concrete is made between upper strata impervious barrier (4) and dam body seepage layer (2).
3. earth-rock dam deep-base seepage-control water-stopping structure for water conservancy and hydropower project as claimed in claim 1 is characterized in that: described lower floor impervious barrier (6) stretches in the impervious foundation layer (9) of the dam foundation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102033033A CN101200885B (en) | 2007-12-21 | 2007-12-21 | Earth-rock dam deep-base seepage-control water-stopping structure for water conservancy and hydropower project |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102033033A CN101200885B (en) | 2007-12-21 | 2007-12-21 | Earth-rock dam deep-base seepage-control water-stopping structure for water conservancy and hydropower project |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101200885A CN101200885A (en) | 2008-06-18 |
| CN101200885B true CN101200885B (en) | 2010-11-10 |
Family
ID=39516225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007102033033A Active CN101200885B (en) | 2007-12-21 | 2007-12-21 | Earth-rock dam deep-base seepage-control water-stopping structure for water conservancy and hydropower project |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101200885B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942820A (en) * | 2010-10-09 | 2011-01-12 | 中国水电顾问集团成都勘测设计研究院 | Impervious structure of arch dam and construction method thereof |
| CN102277852B (en) * | 2011-05-04 | 2013-07-03 | 杨凌职业技术学院 | Teaching model for construction of earth and rockfill dam |
| CN102900092B (en) * | 2012-09-24 | 2015-02-11 | 长江勘测规划设计研究有限责任公司 | Artificial composite foundation of concrete face rockfill dam built on deep and thick coverage layer and construction method of artificial composite foundation |
| CN103410123B (en) * | 2013-08-13 | 2016-03-02 | 中国电建集团成都勘测设计研究院有限公司 | A kind of checkdam for Hydraulic and Hydro-Power Engineering |
| CN103628451B (en) * | 2013-11-07 | 2016-06-29 | 日照市三联调水有限公司 | Impervious watertight structure in hydraulic engineering |
| CN105297738B (en) * | 2015-11-13 | 2017-05-31 | 中国电建集团成都勘测设计研究院有限公司 | Interim irrigation gallery and its construction method |
| CN105464056B (en) * | 2015-12-08 | 2017-10-20 | 辽宁省水利水电勘测设计研究院 | A kind of leakage preventing structure for adapting to Earth-rockfill Dam Settlements |
| CN106894389A (en) * | 2015-12-18 | 2017-06-27 | 梁军 | A kind of new seepage prevention system and structure for being applicable deep covering layer earth and rockfill dam |
| CN105648988B (en) * | 2016-01-11 | 2017-10-31 | 中国电建集团华东勘测设计研究院有限公司 | A kind of stage construction method of Face Rockfill Dam vertical seepage control structure |
| CN106295066A (en) * | 2016-08-24 | 2017-01-04 | 水利部交通运输部国家能源局南京水利科学研究院 | The method for numerical simulation of dam foundation curtain barrier performance decay |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884705A (en) * | 2006-06-29 | 2006-12-27 | 中国水电顾问集团成都勘测设计研究院 | Seepage-proof structure for water conservancy and hydroelectric project |
| CN2918533Y (en) * | 2006-06-29 | 2007-07-04 | 中国水电顾问集团成都勘测设计研究院 | Embankment seepage preventing structure |
-
2007
- 2007-12-21 CN CN2007102033033A patent/CN101200885B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884705A (en) * | 2006-06-29 | 2006-12-27 | 中国水电顾问集团成都勘测设计研究院 | Seepage-proof structure for water conservancy and hydroelectric project |
| CN2918533Y (en) * | 2006-06-29 | 2007-07-04 | 中国水电顾问集团成都勘测设计研究院 | Embankment seepage preventing structure |
Non-Patent Citations (7)
| Title |
|---|
| JP昭58-91212A 1983.05.31 |
| JP特开平9-125347A 1997.05.13 |
| 周春选,王健,杨智睿.新疆下坂地水库坝基防渗处理设计.陕西水利水电技术 2.2005,(2),22-27. |
| 周春选,王健,杨智睿.新疆下坂地水库坝基防渗处理设计.陕西水利水电技术 2.2005,(2),22-27. * |
| 郝元麟,何顺宾.冶勒水电站枢纽布置设计.四川水力发电22 4.2003,22(4),26-30,65. |
| 郝元麟,何顺宾.冶勒水电站枢纽布置设计.四川水力发电22 4.2003,22(4),26-30,65. * |
| 陈建春.冶勒水电站大坝基础防渗系统设计和施工技术.2004水利水电地基与基础工程技术.2005,(2004),96-103. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101200885A (en) | 2008-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101200885B (en) | Earth-rock dam deep-base seepage-control water-stopping structure for water conservancy and hydropower project | |
| CN103422511B (en) | A kind of reinforcement method for transmission tower shallow base foundation under composite soft soil foundation | |
| CN101644041B (en) | Face rockfill dam toe board structure constructed on completely weathered bed rock and construction method thereof | |
| CN204023501U (en) | A kind of reinforcement Anti-seeping technology structure for earth and rockfill dam | |
| CN205012284U (en) | Build dam dam foundation seepage prevention structure on overburden | |
| CN111472326A (en) | Method and structure for building gravity dam on deep covering layer | |
| CN112431172A (en) | Asphalt concrete core rock-fill dam arrangement structure and construction method | |
| CN106368176B (en) | The high dam structure being built on earth material scarcity area deeply covered layer | |
| CN205035768U (en) | Enrockment concrete permeable dike | |
| CN107761668B (en) | Coastal shore reservoir land-building type revetment structure and construction method thereof | |
| CN203939036U (en) | A kind of steel sheet pile cofferdam structure that is applicable to river course | |
| CN203530926U (en) | Slope protection structure for water conservancy project | |
| CN203113863U (en) | Multi-layer structure water pool | |
| CN202187253U (en) | Roadbed structure of high-speed railway on unsaturated soil foundation in flat area | |
| CN103938585A (en) | Arrangement structure of mixed dam composed of earth dams and gravity dam | |
| CN213143069U (en) | Pouring type impervious core earth-rock dam structure | |
| CN205444124U (en) | Waterproof dam of cement piece formula | |
| CN201495530U (en) | Blockage-prevention dam foundation seepage monitoring catch drain structure | |
| CN204849791U (en) | Structure of earth rock cofferdam prevention of seepage system | |
| CN208830256U (en) | A kind of concrete dam grout curtain arragement construction | |
| CN210439235U (en) | Bottom lattice fence type small dam with fish passing function | |
| CN113123301A (en) | Partition structure of gravel soil core wall dam | |
| CN212477620U (en) | Structure for building gravity dam on deep and thick covering layer | |
| CN206157755U (en) | Carry on anti - seepage prevention of dam foundation system of straining structure of double -deck level in deep overburden high dam | |
| CN104947630A (en) | Over-current slag collecting weir for water conservancy and hydropower engineering and construction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHENGDU HYDROELECTRIC INVESTIGATION + DESIGN INSTI Free format text: FORMER NAME: CHENGDU HYDROELECTRIC INVESTIGATION + DESIGN INSTITUTE OF CHINA HYDROPOWER CONSU |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 610072 Sichuan city of Chengdu province's North Road No. Patentee after: Chengdu Hydroelectric Investigation & Design Institute of SPC Address before: 610072 Sichuan city of Chengdu province's North Road No. Patentee before: Chengdu Hydroelectric Investigation & Design Institute of China Hydropower Consu |
|
| C56 | Change in the name or address of the patentee |
Owner name: CHINA POWER GROUP CHENGDU INVESTIGATION DESIGN + R Free format text: FORMER NAME: CHENGDU HYDROELECTRIC INVESTIGATION + DESIGN INSTITUTE OF SPC |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 610072 Sichuan city of Chengdu province's North Road No. Patentee after: Co., Ltd of Chengdu survey and design academy of electricity Jian group of China Address before: 610072 Sichuan city of Chengdu province's North Road No. Patentee before: Chengdu Hydroelectric Investigation & Design Institute of SPC |