CN202945579U - Full-section three-graded concrete dam structure - Google Patents
Full-section three-graded concrete dam structure Download PDFInfo
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- CN202945579U CN202945579U CN 201220657901 CN201220657901U CN202945579U CN 202945579 U CN202945579 U CN 202945579U CN 201220657901 CN201220657901 CN 201220657901 CN 201220657901 U CN201220657901 U CN 201220657901U CN 202945579 U CN202945579 U CN 202945579U
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- concrete dam
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- roller compacted
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Abstract
The utility model discloses a full-section three-graded concrete dam structure which comprises a three-graded roller compacted concrete dam structure (1), distorted concrete layers (2) and a water drainage pipe system, wherein the distorted concrete layers (2) are arranged in parts at upper and down steams, where rolling is inconvenient to performed, and the water drainage pipe system is arranged inside the three-graded roller compacted concrete dam structure (1) and in a position close to an upstream surface. Compared with a conventional roller compacted concrete dam, the full-section three-graded concrete dam structure has the advantages that the arrangement of second-graded impermeable roller compacted concrete is omitted, further the cement use level is reduced, temperature control measures are simplified, and construction cost is saved. The thickness of distorted concrete is increased and the drainage capacity is reinforced, and problems in roller compacted concrete anti-seepage capability and stability are solved.
Description
Technical field
The utility model relates to a kind of full section three-graded concrete dam structure, belongs to the concrete dam technical field.
Background technology
RCCD (Roller Compacted Concrete Dam) is a nearly dam construction technique that grew up in 30 years, build a dam different with the method for vibrator insertion vibration compacting from normal concrete, its main feature is that the use cement factor is low, the harsh concrete of high fly ash, adopt transportation and the making equipment identical with earth and rockfill dam, thin layer pave vibroroller cmpacting, rise and to fill layer by layer.This essence is in addition comprehensive the superiority of concrete dam structure and material and earth-rock dam construction method, through preferentially improving a kind of new dam construction technology that combines and form.This mode of building a dam can be saved cement, is conducive to extensive do mechanization operation, thereby the energy reduction of erection time, reduces construction costs.Development through more than 30 years, RCCD (Roller Compacted Concrete Dam) forms the mode of upstream face two grating antiseepage roller compacted concrete+downstream three grating roller compacted concretes gradually when section arranges, wherein the thickness of two grating antiseepage roller compacted concretes needs adjust according to the difference of bearing head.Development along with the roller compacted concrete technology, the corresponding layouts that reduce builder's road of used in vertical transportation of concrete mode such as vacuum elephant trunk, box full packages, and the application of the multiple grading concrete of dam body makes the vertical transport instrument need to adjust continually the concrete kind, brings inconvenience to construction.Therefore, the structure of this multiple grating RCCD (Roller Compacted Concrete Dam) or undesirable.
Summary of the invention
The purpose of this utility model is that the technical problem of the inconvenience that brings to construction is set for solving the original section concrete of RCCD (Roller Compacted Concrete Dam) subregion, and a kind of full section three grating roller compacted concrete Dam structures are provided, and can also reduce construction costs simultaneously.
For solving the problems of the technologies described above, a kind of full section three-graded concrete dam structure of the present utility model, wherein, this structure is comprised of three grating roller compacted concrete dam bodys, abnormal concrete layer and drain pipe system; The abnormal concrete layer is arranged on the position that the upstream and downstream inconvenience of roller compacted concrete dam body rolls, and drain pipe system is arranged on the inside of roller compacted concrete dam body near the position of upstream face.
Described roller compacted concrete dam body adopts the coarse aggregate of three kinds of continuous gradings to mix concrete processed.In the coarse aggregate of described three kinds of continuous gradings, maximum diameter of aggrogate is 80mm.Adopt the stone of three kinds of continuous gradings as mixing the concrete coarse aggregate of system, the aggregate size scope is 5～20mm, 20～40mm, 40～80mm.All adopt this kind material at the whole section of dam body, two grating roller compacted concretes are set no longer separately as antiseepage.
Consider the factors such as gallery is arranged, infiltration gradient, described drain pipe system is arranged on apart from the position of upstream face 2～15m.The sewerage pipeline network that described drain pipe system is comprised of horizontal drain pipe and the vertical drainage pipe of interlaced arrangement, horizontal drain pipe communicates with the vertical drainage pipe.Between described horizontal drain pipe and vertical drainage pipe, array pitch is 2～5m.Can utilize like this sewerage pipeline network to collect the water of coming from the infiltration of upstream dam facing.The caliber of gutter is 50mm～250mm, and drainage pipeline networks adopts pre-buried mode (or the pre-buried later stage bore mode that adds) to arrange, sewerage pipeline network is synchronizeed with three grating roller compacted concretes and risen.
Described abnormal concrete layer is to adopt the structure of starching and vibrating and form in the face of three grating roller compacted concretes add in the storehouse of constructing.The concrete same with the roller compacted concrete dam body that described three grating roller compacted concretes use.Add slurry and refer to the position of rolling for inconvenience, the employing scene adds the cement, flyash mixed serum formation abnormal concrete that vibrates, and the contact quality of assurance and template, base surface.Particularly increase by 10～100cm with the original section of the abnormal concrete Thickness Ratio of face contact site near water, strengthen its seepage capability.The width of described abnormal concrete layer is 0.5m～1.5m.
Existing RCCD (Roller Compacted Concrete Dam) section setting is compared, and the utility model has been cancelled two grating antiseepage roller compacted concrete settings, has solved the construction restriction that multiple grading concrete carries conversion to bring; Due to the roller compacted concrete that has adopted three gratings, further reduce cement consumption simultaneously, simplified Temperature Control Measures, saved construction costs.Utilize the design concept of " front stifled rear row ", increase abnormal concrete thickness and reinforced platoon's outlet capacity and solved roller compacted concrete seepage capability and stable problem.Through numerical simulation and prototype measurement practice, prove that full section three-graded concrete of the present utility model dam has safe and reliable, the advantages such as concrete conveyance is simple, construction control is convenient, temperature control is simple, cost saving.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Description of reference numerals: 1-roller compacted concrete dam body, 2-abnormal concrete layer, 3-horizontal drain pipe, 4-vertical drainage pipe.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
First see Fig. 1, as shown in the figure, the up-narrow and down-wide trapezoidal cross-section of the whole one-tenth of full section three-graded concrete dam structure of the present utility model, this structure is comprised of three grating roller compacted concrete dam bodys 1, abnormal concrete layer 2 and drain pipe system; Abnormal concrete layer 2 is arranged on the position that the upstream and downstream inconvenience of roller compacted concrete dam body 1 rolls, and drain pipe system is arranged on the inside of roller compacted concrete dam body 1 near the position of upstream face.
The utility model utilizes means of delivery to configure when implementing and three grating roller compacted concretes of uniform mixing are delivered to the storehouse face that rolls, and adopts paver and rolling apparatus to carry out roller compaction construction.Concrete material adopts the stone of three kinds of continuous gradings as mixing the concrete coarse aggregate of system, and the aggregate size scope is 5～20mm, 20～40mm, 40～80mm, and wherein maximum particle diameter is 80mm.All adopt this kind material at the whole section of dam body, two grating roller compacted concretes are set no longer separately as antiseepage.Inconvenience rolls the position and adopts abnormal concrete (modified concrete) construction formation abnormal concrete layer to the upstream and downstream face, described abnormal concrete layer 2 is to adopt the structure of starching and vibrating and form in the face of three grating roller compacted concretes add in the storehouse of constructing, add slurry and refer to the position of rolling for inconvenience, the employing scene adds the cement, flyash mixed serum formation abnormal concrete that vibrates, and the contact quality of assurance and template, base surface.Enlarge according to the antiseepage condition for face near water and add slurry scope 0.1～1.0m, namely increase the thickness of face abnormal concrete layer 2 near water.Consider the factors such as gallery is arranged, infiltration gradient, the storehouse face that rolls at face 2～15m apart near water, located level gutter 3 and the staggered drainage pipeline networks that is interconnected of vertical drainage pipe 4, between the gutter of drainage pipeline networks, array pitch is controlled at 2～5m according to the difference of head, synchronizes with the dam body roller compacted concrete and rises.
Be more than a concrete exemplary applications of the present utility model, the utility model also has other embodiment, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, within all dropping on the desired protection domain of this utility model.
Claims (8)
1. full section three-graded concrete dam structure, it is characterized in that: this structure is comprised of three grating roller compacted concrete dam bodys (1), abnormal concrete layer (2) and drain pipe system; Abnormal concrete layer (2) is arranged on the position that the upstream and downstream inconvenience of roller compacted concrete dam body (1) rolls, and drain pipe system is arranged on the inside of roller compacted concrete dam body (1) near the position of upstream face.
2. full section three-graded concrete dam structure according to claim 1 is characterized in that: described roller compacted concrete dam body (1) adopts the coarse aggregate of three kinds of continuous gradings to mix concrete processed.
3. full section three-graded concrete dam structure according to claim 1, it is characterized in that: described drain pipe system is arranged on apart from the position of upstream face 2～15m.
4. full section three-graded concrete dam structure according to claim 1 is characterized in that: described abnormal concrete layer (2) is to adopt starch in the face of three grating roller compacted concretes add in the construction storehouse and the structure of the formation of vibrating.
5. full section three-graded concrete dam structure according to claim 2, it is characterized in that: in the coarse aggregate of described three kinds of continuous gradings, maximum diameter of aggrogate is 80mm.
6. full section three-graded concrete dam structure according to claim 3 is characterized in that: the sewerage pipeline network that described drain pipe system is comprised of horizontal drain pipe (3) and the vertical drainage pipe (4) of interlaced arrangement.
7. full section three-graded concrete dam structure according to claim 4, it is characterized in that: the width of described abnormal concrete layer (2) is 0.5m～1.5m, and Thickness Ratio other positions of the abnormal concrete layer (2) of face increase by 0.1～1m near water.
8. full section three-graded concrete dam structure according to claim 6, it is characterized in that: between described horizontal drain pipe (3) and vertical drainage pipe (4), array pitch is 2～5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220657901 CN202945579U (en) | 2012-12-04 | 2012-12-04 | Full-section three-graded concrete dam structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220657901 CN202945579U (en) | 2012-12-04 | 2012-12-04 | Full-section three-graded concrete dam structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202945579U true CN202945579U (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220657901 Expired - Lifetime CN202945579U (en) | 2012-12-04 | 2012-12-04 | Full-section three-graded concrete dam structure |
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| CN (1) | CN202945579U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104652372A (en) * | 2015-01-23 | 2015-05-27 | 天津大学 | Upstream-oriented seepage-proofing and crack-resisting roller-compacted concrete gravity dam |
| WO2019075812A1 (en) * | 2017-10-19 | 2019-04-25 | 广东水电二局股份有限公司 | Roller compacted concrete dam and construction method therefor |
| CN109736315A (en) * | 2019-01-12 | 2019-05-10 | 中国水利水电第七工程局有限公司 | A kind of gradual change type gradient volume abnormal concrete operational method |
-
2012
- 2012-12-04 CN CN 201220657901 patent/CN202945579U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104652372A (en) * | 2015-01-23 | 2015-05-27 | 天津大学 | Upstream-oriented seepage-proofing and crack-resisting roller-compacted concrete gravity dam |
| WO2019075812A1 (en) * | 2017-10-19 | 2019-04-25 | 广东水电二局股份有限公司 | Roller compacted concrete dam and construction method therefor |
| CN109736315A (en) * | 2019-01-12 | 2019-05-10 | 中国水利水电第七工程局有限公司 | A kind of gradual change type gradient volume abnormal concrete operational method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA POWER GROUP GUIYANG INVESTIGATION DESIGN + R Free format text: FORMER NAME: HYDROCHINA GUIYANG ENGINEERING CORPORATION, LTD. Owner name: HYDROCHINA GUIYANG ENGINEERING CORPORATION, LTD. Free format text: FORMER NAME: GUIYANG PROSPECTION + DESIGN INST, CHINA HYDRAULIC POWER CONSULTARY GROUP |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 550081 No. 16 Xing Qian Road, Jinyang New District, Guizhou, Guiyang Patentee after: CHINA POWER CONSRTUCTION GROUP GUIYANG SURVEY AND DESIGN INSTITUTE Co.,Ltd. Address before: 550081 No. 16 Xing Qian Road, Jinyang New District, Guizhou, Guiyang Patentee before: POWERCHINA GUIYANG ENGINEERING Corp.,Ltd. Address after: 550081 No. 16 Xing Qian Road, Jinyang New District, Guizhou, Guiyang Patentee after: POWERCHINA GUIYANG ENGINEERING Corp.,Ltd. Address before: 550081 No. 16 Xing Qian Road, Jinyang New District, Guizhou, Guiyang Patentee before: HydroChina Guiyang Engineering Corp. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130522 |
|
| CX01 | Expiry of patent term |