CN100535266C - Concrete face board rock-fill dam bed course area moving boundary wall filling construction technique - Google Patents
Concrete face board rock-fill dam bed course area moving boundary wall filling construction technique Download PDFInfo
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- CN100535266C CN100535266C CNB2006101668576A CN200610166857A CN100535266C CN 100535266 C CN100535266 C CN 100535266C CN B2006101668576 A CNB2006101668576 A CN B2006101668576A CN 200610166857 A CN200610166857 A CN 200610166857A CN 100535266 C CN100535266 C CN 100535266C
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- abutment wall
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Abstract
The present invention relates to a concrete deck rock-fill dam bedding zone moving side wall reclamation construction technique in water utilization and water-power engineering. It is characterized by that said invention adopts reinforced concrete moving side wall to make slope protection in layers, rolling by layers, repeatedly using moving side wall, mechanical scaling, manual precise scaling, finishing slope and protecting slope by adopting mortar-rolling process.
Description
Affiliated technical field
The invention belongs to a kind of construction technology that fill in the concrete panel rock fill dam bedding district in the Hydraulic and Hydro-Power Engineering.
Background technology
In Concrete Face Rockfill Dam, the bedding material district is positioned at the downstream of panel, upstream during dam embankment is domatic, it is the basis of dam body seepage concrete slab, the one's respective area requires evenly, the characteristics of stable, low compressibility, high shear strength, no matter be or fill index, require all higher, more strict to domatic compacting index request especially bedding material; Therefore, in dam embankment to the special attention of filling of this position.
In traditional job practices, the method into layering stone and compacting is filled in the bed course district, takes extra-fill 30-50cm on slope surface treatment, fills mechanical interim roughing slope in the process, later stage, artificial essence was cut the slope, carried out behind the grinding compacting of slope the construction technology of the domatic and bank protection of manual amendment more then.
In recent years, invented extruded concrete abutment wall construction technology in the filling of bed course district, this technology need not carried out slope surface treatment, thereby directly domatic employing extrusion forms concrete sidewall and becomes the panel basis in upstream, bed course district, has obtained effect preferably.But, adopting this technology construction, it is more that concrete slab produces the crack, and it is relevant with the constraint of extrusion side wall rigid structures counter plate that domestic part expert suspects.In China, Qinghai Gongboxia hydropower station rock adopts this technology first, and after this, Hubei Shui Buya rock, Gansu dragon first sheetpile masonry dam etc. adopts this technology; Its panel has all produced more crack, at present causes of cracks is among the research.Constructing 120 meters the time in the Malaysian Ba Gong power station (bed course district extrusion side wall fills for rock, 220 meters of heights of dam) of external Hot work in progress, panel, has just produced than multiple cracking.
Examine in the panel sand gravel loose rock dam criterion design review of sweat Usu in Xinjiang, in view of this dam is that domestic seat of honour toe board is located in dark covering layer meter level high dams up to a hundred, extruded concrete abutment wall construction technology is not adopted in suggestion.For this reason, on the basis of experimental study and construction practice, invented the concrete face board rock-fill dam bed course area moving boundary wall filling construction technology.
Summary of the invention
In the concrete panel rock fill dam bedding district tradition filling construction, to domatic cut slope, compacting and smooth etc. treatment process more, the slope surface treatment engineering quantity is big and take straight line duration of dam construction; General bedding material takes the method for extra-fill to abandon material amount big (abandoning material rate about 5%) for adding labor and materials, and is more uneconomical.In addition, though the extrusion side wall construction technology is not cut slope and slope roller compaction processes, the concrete extrusion side wall directly becomes the basis of panel, and its rigid structures counter plate produces certain constraint, is unfavorable for the distortion of panel.
For the extra-fill that reduces traditional dam filling construction, cut slope and slope and the slope surface treatment engineering quantity such as roll, improve dam embankment efficient, shorten the dam embankment duration; Simultaneously, overcome extrusion side wall constraint panel and the characteristics that are unfavorable for being out of shape; Invented mobile abutment wall filling construction technology.
The present invention adopts steel concrete to move abutment wall (seeing accompanying drawing 1) layering bank protection, roll in the domatic lateral restraint lower leaf of abutment wall, abutment wall moves repeated use, the disposable slope of cutting of machinery puts in place, artificial essence is cut slope and domatic finishing, rolls the bed course district filling construction technology of mortar method bank protection face then on domatic.Its main construction sequence has: the 1. mobile abutment wall of the step-like installation of layering, 2. bedding material is laid in the dam facing layering of bed course district, 3. layered rolling (under the domatic lateral restraint of abutment wall), and 4. machinery is cut the slope, 5. artificial essence is cut slope and slope leveling, 6. domatic laying protection mortar and grinding compacting, smooth.Concrete abutment wall structure and work progress are seen accompanying drawing 2, Fig. 3, Fig. 4.
The present invention fills under the condition of index having reached design, and on the one hand structurally it has overcome the shortcoming of extrusion side wall counter plate constraint, and structurally identical with tradition, and mobile abutment wall is reusable, than extrusion side wall economy; On the other hand, compare with traditional construction technology, reduced the slope surface treatment engineering quantity, in time bank protection has improved dam embankment speed, has reduced the bed course district and has filled cost, has higher using value.
Description of drawings
Fig. 1 is that steel concrete of the present invention moves abutment wall bodily form plan.
Fig. 2 is mobile abutment wall installation in position and stone, roller compaction construction schematic diagram
Fig. 3 is that mobile abutment wall lateral confinement underlayer district rolls and fills the schematic diagram of constructing behind four floor
Fig. 4 is that mobile abutment wall lateral confinement underlayer district rolls and fills behind eight floor machinery and cut slope construction schematic diagram
The specific embodiment
One, mobile abutment wall design
Mobile abutment wall is designed to reinforced concrete prefabricated wall, is rectangular cross section.The bulk strength of abutment wall will satisfy to be installed and stablizing under the vibroroller cmpacting condition.Abutment wall height, wide and bedding material layered rolling bed thickness, to roll parameter relevant with the bed course district upstream gradient, in the practice of construction according to height, the wide size of concrete construction parameter design wall.Abutment wall length is determined according to rolling experiment, wall stability when rolling, and horizontal movement is not more than 2cm, to guarantee the compacting of bedding material.Abutment wall end face symmetry is laid two hangers, so that lifting is moved.For example: the bed course layer thickness is 43cm, and compacted depth is 37cm, and bed course district upstream dam slope is 1: 1.5; The compacting relative density is greater than 0.9, and void content is less than 17%, the vibrating roller compacting 8 times voluntarily of bedding material moisture content 6%, 20T; Then design the high 37cm of wall, wide 54cm, levels wall break joint is apart from being 1.5cm, and forming the step depth-width ratio is 1: 1.5, and is domatic consistent with the design upstream, reaches the purpose of preliminary control dam slope.Determine that through filling experiment abutment wall length is 8m.
Two, mobile abutment wall filling construction method
Mobile abutment wall is installed: the sideline, upstream is made in the dam facing setting-out in the bed course district, adopts the excavator lifting, manually auxiliary installation in place.The abutment wall inner side edge is apart from the about 1.5cm in sideline, upstream (levels abutment wall seam distance is convenient to abutment wall and is removed).
Stone: dump truck haul to surface of filling retreats the method discharging, and the stockpile distance is definite according to the layer thickness measuring and calculating; Adopt big stone of bulldozer, flat material, artificial auxiliary flat material, layer thickness is determined by field compaction test.
Roll: generally adopt 20T self-propelled vibrating roller to roll, the vibrating roller impression is apart from abutment wall 5-10cm, and rolling method is identical with conventional job practices.
After first floor fills and finishes, carry out installation, the stone of second layer abutment wall and roll, its method is the same; To the 3rd layer fill finish after, remove the lifting of first floor abutment wall and fill to the 4th layer, have on domatic in the upstream three layers of abutment wall simultaneously bank protections fill, the domatic formation in upstream is step-like after removing abutment wall; After circulation is filled eight layers like this, adopt that excavator is disposable to be eliminated following five layers of step to form more smooth upstream compacting domatic; Artificial in time smooth domatic reach designing requirement after, lay 3-5cm mortar (strength mark is less than M5), and ram with small vibrating that compacting, smooth mortar are domatic plays further compacting top layer disturbance layer and bank protection effect in time.
Claims (3)
1. the job practices of a concrete face board rock-fill dam bed course area moving boundary wall filling, comprise mobile abutment wall, stone be installed, rolled, machinery is cut the slope, manually cut slope and smooth, its main construction sequence has: the 1. mobile abutment wall of the step-like installation of layering, 2. bedding material is laid in the dam facing layering of bed course district, 3. roll in the domatic lateral restraint lower leaf of abutment wall, 4. machinery is cut the slope, and 5. artificial essence is cut slope and slope leveling, sets up defences and protect mortar and grinding compacting, smooth in 6. domatic upper berth.
2. concrete face board rock-fill dam bed course area moving boundary wall filling job practices according to claim 1, it is characterized in that: mobile abutment wall is designed to reinforced concrete structure, rectangular cross section, the design of the height and width of abutment wall based on bedding material layered rolling bed thickness, roll parameter and upstream, bed course district gradient parameter, abutment wall length is determined according to rolling experiment.
3. concrete face board rock-fill dam bed course area moving boundary wall filling job practices according to claim 1, it is characterized in that: three layers of mobile abutment wall bank protection fill simultaneously, abutment wall recycles, whenever cut once slope after filling eight layers, lay low grade mortar on domatic, and ram grinding compacting with small vibrating and form domatic less than M5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101668576A CN100535266C (en) | 2006-12-03 | 2006-12-03 | Concrete face board rock-fill dam bed course area moving boundary wall filling construction technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101668576A CN100535266C (en) | 2006-12-03 | 2006-12-03 | Concrete face board rock-fill dam bed course area moving boundary wall filling construction technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101021072A CN101021072A (en) | 2007-08-22 |
| CN100535266C true CN100535266C (en) | 2009-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006101668576A Expired - Fee Related CN100535266C (en) | 2006-12-03 | 2006-12-03 | Concrete face board rock-fill dam bed course area moving boundary wall filling construction technique |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979120A (en) * | 2012-12-03 | 2013-03-20 | 黑龙江省龙建路桥第四工程有限公司 | Trimming equipment and trimming method for roadbed slope |
| CN104120726B (en) * | 2014-07-16 | 2016-04-13 | 中国电建集团西北勘测设计研究院有限公司 | A kind of cement particle material slope roller compaction device and construction method thereof |
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2006
- 2006-12-03 CN CNB2006101668576A patent/CN100535266C/en not_active Expired - Fee Related
Non-Patent Citations (8)
| Title |
|---|
| 挤压式边墙施工法在混凝土面板堆坝工程中的应用. 苗树英，白昭鹏.陕西水力发电，第17卷第4期. 2001 |
| 挤压式边墙施工法在混凝土面板堆坝工程中的应用. 苗树英，白昭鹏.陕西水力发电，第17卷第4期. 2001 * |
| 挤压边墙技术在混凝土面板堆石坝施工中的应用. 付强.电力建设，第26卷第9期. 2005 |
| 挤压边墙技术在混凝土面板堆石坝施工中的应用. 付强.电力建设，第26卷第9期. 2005 * |
| 挤压边墙法在混凝土面板堆石坝中的应用. 张新园.云南水力发电，第21卷第6期. 2005 |
| 挤压边墙法在混凝土面板堆石坝中的应用. 张新园.云南水力发电，第21卷第6期. 2005 * |
| 混凝土面板堆石坝挤压边墙施工技术. 关云航，王章忠，向红卫.红水河，第25卷第1期. 2006 |
| 混凝土面板堆石坝挤压边墙施工技术. 关云航，王章忠，向红卫.红水河，第25卷第1期. 2006 * |
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Granted publication date: 20090902 Termination date: 20111203 |