CN104532798A - Flexible debris retaining dam structure and construction method thereof - Google Patents
Flexible debris retaining dam structure and construction method thereof Download PDFInfo
- Publication number
- CN104532798A CN104532798A CN201410824240.3A CN201410824240A CN104532798A CN 104532798 A CN104532798 A CN 104532798A CN 201410824240 A CN201410824240 A CN 201410824240A CN 104532798 A CN104532798 A CN 104532798A
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- CN
- China
- Prior art keywords
- dam
- construction method
- reinforced gabion
- covering layer
- debris retaining
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Classifications
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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
- E02B7/06—Earth-fill dams; Rock-fill dams
Abstract
The invention discloses a flexible debris retaining dam structure and a construction method thereof. The flexible debris retaining dam structure and the construction method thereof comprises a debris retaining dam which is constructed on a covering layer base, the debris retaining dam is formed by stacking reinforcement gabions from bottom to top in a gradually set-back mode, adjacent reinforcement gabions are connected with each other in a welded mode to form an integral step-type dam body, and a drain culvert pipe is arranged at the bottom of the step-type dam body. The integral step-type dam body is formed by adopting multi-layer reinforcement gabion stacked combination, and the body type of the step-type dam body is basically the same as that of conventional gravity dam types such as concrete debris retaining dam and grouted rubble debris retaining dam; the structure is simple, the certain character of 'flexibility' of the structure is achieved, a general degree of deformation feedback to the soft foundation of the covering layer is effective adapted, the dam body can not be destroyed, so that fundamental demands to build a dam is lowered, the dam can be constructed on the soft foundation of the covering layer, the construction is simple, and the construction cost is low.
Description
Technical field
The present invention relates to a kind of flexible blocking slag dam structure and construction method thereof, belong to water conservancy, water power, engineering construction technology field.
Background technology
The a large amount of native stone excavation waste produced in construction of hydropower plant process to need to be transported in selected Dumping Sites and abandons by certain requirement heap, dregs-blocking dam is one of important structure of Dumping Sites, play the effect of waste of blocking, simultaneously dregs-blocking dam also must possess the ponding can discharged behind dam in slag body, can the function such as maladjustment ground.At present, the hard material structure such as dregs-blocking dam multiselect concrete, stone masonry in hydroelectric project Dumping Sites, its Stability Analysis of Structures, intensity are high, survivable.But hard material dregs-blocking dam is high to dam foundation fundamental importance, dam foundation General Requirements is excavated to basement rock; As directly set up on the cover layer, then need further strengthening measures such as covering layer basis making cement consolidation groutings, after making covering layer basis reach some strength, as the dam foundation basis of hard material dregs-blocking dam, otherwise easily could there is gene basis sedimentation and cause dam body to destroy.In order to the ponding behind dam in slag body can be discharged, usually at concrete, stone masonry dregs-blocking dam dam body can pre-buried number row PVC drain pipe.
In sum, it is high to building dam fundamental importance for the hard material dregs-blocking dams such as the concrete in current hydroelectric project, stone masonry, cost is large, construction is complicated, the pre-buried gutter of dam body domestic demand, run into unfavorable foundation as soft base conditions such as deep covering layers, it can not adapt to distortion, the sedimentation of soft base, easily because the distortion of soft base, sedimentation cause dam body to destroy.
Summary of the invention
The object of the invention is to, a kind of structure is simple, quick construction, cost are low flexible blocking slag dam structure and construction method thereof are provided, effectively can not only overcome covering layer basis and wait unfavorable geological condition, and can directly be based upon on covering layer basis, adapt to the distortion of soft base, sedimentation, possess drainage in dam body simultaneously, the functions such as waste of blocking, to overcome prior art deficiency.
Technical scheme of the present invention: a kind of construction method of flexible blocking slag dam, the method is when building dregs-blocking dam on covering layer basis, adopts reinforced gabion to move back platform from bottom to top gradually and stacks into stairstepping dam body.
Further, the reinforced gabion stacked offset of every interlayer.
Further, between each adjacent reinforced gabion, adopt short muscle to be welded to connect, make dregs-blocking dam form an overall stairstepping dam body, increase its stability, and distortion, the sedimentation of soft base can be adapted to.
When running into slag volume discharge and being larger, be strengthen the drain function of dregs-blocking dam, can bury in the covering layer basis under orlop reinforced gabion and put drainage culvert.
A kind of for the flexible blocking slag dam structure in said method, comprise the dregs-blocking dam built on covering layer basis, described dregs-blocking dam moves back platform from bottom to top gradually by reinforced gabion to stack, and between adjacent reinforced gabion, adopt short muscle to be welded to connect the overall stairstepping dam body of formation one, in the bottom of stairstepping dam body, drainage culvert is set.
Described reinforced gabion is made up of rectangle reinforcing cage and the reinforcing bar square being arranged on rectangle reinforcing cage top, in rectangle reinforcing cage, be filled with stone.
Described drainage culvert is concrete culvert pipe with great.
Owing to adopting technique scheme, the invention has the advantages that: the present invention adopts multistory reinforced gabion to stack to be combined to form overall stairstepping dam body, its build is basically identical with the gravity dam formula build of conventional concrete, stone masonry dregs-blocking dam etc., not only Stability Analysis of Structures, and self possess certain " flexibility " feature, effectively can adapt to the feedback of the deformation to the soft base of covering layer of general degree, and do not destroy dam body, therefore it is low to building dam fundamental importance, can directly be based upon on the soft base of covering layer, construction is simple, and cost is low.Therefore, the present invention has the advantages such as structure is simple, quick construction, cost are low, can make full use of the Permeable characteristic of reinforced gabion combining structure and feed back the deformation of the soft base of covering layer simultaneously, playing waste effect of well blocking.
Accompanying drawing explanation
Fig. 1 is the section structure schematic diagram of dregs-blocking dam of the present invention;
Fig. 2 is the Facad structure schematic diagram of dregs-blocking dam of the present invention;
Fig. 3 is the structural representation of reinforced gabion in the present invention.
Description of reference numerals: 1-dregs-blocking dam, 2-reinforced gabion, 3-drainage culvert, 4-covering layer basis, 5-soil stone waste body.
Detailed description of the invention
In order to make the object of the invention, technical scheme and advantage clearly, below in conjunction with drawings and Examples, the present invention is described in further detail.
Embodiment
As shown in Figures 1 and 2, a kind of flexible blocking slag dam structure of the present invention, comprise the dregs-blocking dam 1 built on covering layer basis 4, described dregs-blocking dam 1 be by reinforced gabion 2 from bottom to top every layer move back platform 1.0m or 0.5m gradually and stack, reinforced gabion 2 Heterogeneous Permutation of every interlayer, and between adjacent reinforced gabion 2, adopt short muscle to be welded to connect the overall stairstepping dam body of formation one, in the bottom of stairstepping dam body, drainage culvert 3 is set.See Fig. 3, described reinforced gabion 2 is made up of rectangle reinforcing cage 2.1 and the reinforcing bar square 2.2 being arranged on rectangle reinforcing cage 2.1 top, the size of reinforced gabion 2 can make according to site operation, usually reinforced gabion 2 is of a size of 2m × 1.5m × 1m or 2m × 2m × 1m, the reinforcement welding that it is φ 16, φ 18 or φ 20 that reinforced gabion 2 can be selected by diameter makes, wherein array pitch 10 ~ 20cm between reinforcing bar, load the crushed stone of particle diameter 30cm ~ 50cm in rectangle reinforcing cage 2.1 after, reinforcing bar square 2.2 is covered and is connected with rectangle reinforcing cage 2.1.
During construction, first in selected dregs-blocking dam position, remove the top layer foreign material etc. on upper caldding layer basis 4, carry out the flat construction in field, then pre-buried drainage culvert 3 in covering layer basis 4, reinforced gabion 2 now just can be adopted on covering layer basis 4 to move back platform from bottom to top gradually and to stack into stairstepping dam body, reinforced gabion 2 Heterogeneous Permutation of every interlayer, further, between each adjacent reinforced gabion 2, adopt short muscle to be welded to connect, make dregs-blocking dam 1 form an overall stairstepping dam body, increase its stability, and distortion, the sedimentation of soft base can be adapted to.In above-mentioned work progress, drainage culvert 3 can adopt concrete culvert pipe with great, and the quantity of drainage culvert 3 and diameter can design according to the draining size of Dumping Sites behind dam.If displacement is very little, even can not need drainage culvert 3, can directly utilize self water permeability of reinforced gabion 2 structure to discharge the ponding behind dam in waste body.Namely total floor height of reinforced gabion 2 constitutes the height of dregs-blocking dam 1, namely every layer of reinforced gabion 2 row constitute the thickness of the corresponding elevation of dregs-blocking dam 1, and the height of dregs-blocking dam 1 and thickness can calculate according to native stone pressure behind block height and the dam of stone waste body native behind dam to be determined.
Claims (7)
1. a construction method for flexible blocking slag dam, is characterized in that: when building dregs-blocking dam (1) on covering layer basis (4), adopts reinforced gabion (2) to move back platform from bottom to top gradually and stacks into stairstepping dam body.
2. the construction method of flexible blocking slag dam according to claim 1, is characterized in that: reinforced gabion (2) stacked offset of every interlayer.
3. the construction method of flexible blocking slag dam according to claim 2, is characterized in that: between each adjacent reinforced gabion (2), adopt short muscle to be welded to connect.
4. the construction method of flexible blocking slag dam according to claim 1, is characterized in that: bury in the covering layer basis (4) under orlop reinforced gabion (2) and put drainage culvert (3).
5. the flexible blocking slag dam structure for the construction method of the flexible blocking slag dam according to any one of Claims 1 to 4, comprise the dregs-blocking dam (1) built on covering layer basis (4), it is characterized in that: described dregs-blocking dam (1) moves back platform from bottom to top gradually by reinforced gabion (2) to stack, and between adjacent reinforced gabion (2), adopt short muscle to be welded to connect the overall stairstepping dam body of formation one, drainage culvert (3) is set in the bottom of stairstepping dam body.
6. flexible blocking slag dam structure according to claim 5, it is characterized in that: described reinforced gabion (2) is made up of rectangle reinforcing cage (2.1) and the reinforcing bar square (2.2) that is arranged on rectangle reinforcing cage (2.1) top, in rectangle reinforcing cage (2.1), be filled with stone.
7. flexible blocking slag dam structure according to claim 5, is characterized in that: described drainage culvert (3) is concrete culvert pipe with great.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410824240.3A CN104532798A (en) | 2014-12-26 | 2014-12-26 | Flexible debris retaining dam structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410824240.3A CN104532798A (en) | 2014-12-26 | 2014-12-26 | Flexible debris retaining dam structure and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104532798A true CN104532798A (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410824240.3A Pending CN104532798A (en) | 2014-12-26 | 2014-12-26 | Flexible debris retaining dam structure and construction method thereof |
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| CN (1) | CN104532798A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111979973A (en) * | 2020-07-23 | 2020-11-24 | 中国电建集团华东勘测设计研究院有限公司 | Method for rapidly constructing slag dam of abandoned slag yard and slag dam of abandoned slag yard |
| CN115217078A (en) * | 2021-04-19 | 2022-10-21 | 王立久 | Silt dam stacked by box type net formwork and construction method thereof |
Citations (3)
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| JP2000073339A (en) * | 1998-06-15 | 2000-03-07 | Natl Res Inst Of Agricultural Engineering | Inspection gallery in fill-type dam and construction method of inspection gallery in fill-type dam |
| CN104164851A (en) * | 2014-08-22 | 2014-11-26 | 水利部交通运输部国家能源局南京水利科学研究院 | Gabion arch ecological flexible debris flow blocking dam and building method thereof |
| CN204370378U (en) * | 2014-12-26 | 2015-06-03 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of flexible blocking slag dam structure |
-
2014
- 2014-12-26 CN CN201410824240.3A patent/CN104532798A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000073339A (en) * | 1998-06-15 | 2000-03-07 | Natl Res Inst Of Agricultural Engineering | Inspection gallery in fill-type dam and construction method of inspection gallery in fill-type dam |
| CN104164851A (en) * | 2014-08-22 | 2014-11-26 | 水利部交通运输部国家能源局南京水利科学研究院 | Gabion arch ecological flexible debris flow blocking dam and building method thereof |
| CN204370378U (en) * | 2014-12-26 | 2015-06-03 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of flexible blocking slag dam structure |
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| 李德宁等: ""桥巩水电站工程弃渣场选址及水土保持设计"", 《红水河》 * |
| 牛乐等: ""绿格网生态防护技术在水电工程弃碴治理中的应用"", 《西北水电》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111979973A (en) * | 2020-07-23 | 2020-11-24 | 中国电建集团华东勘测设计研究院有限公司 | Method for rapidly constructing slag dam of abandoned slag yard and slag dam of abandoned slag yard |
| CN115217078A (en) * | 2021-04-19 | 2022-10-21 | 王立久 | Silt dam stacked by box type net formwork and construction method thereof |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150422 |