CN205000298U - Embankment dam dam facing slope protection structure - Google Patents
Embankment dam dam facing slope protection structure Download PDFInfo
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- CN205000298U CN205000298U CN201520782603.1U CN201520782603U CN205000298U CN 205000298 U CN205000298 U CN 205000298U CN 201520782603 U CN201520782603 U CN 201520782603U CN 205000298 U CN205000298 U CN 205000298U
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Abstract
The utility model discloses a construction convenience and the better embankment dam dam facing slope protection structure of bank protection performance. An embankment dam dam facing slope protection structure, is including setting up upper reaches dam facing and the low reaches dam facing at the upper and lower trip side surface of high earth -rock dam dam body enrockment respectively, upper reaches dam facing is mainly built by laying bricks or stones by polylith upper reaches building block and is formed, the low reaches dam facing is mainly built by laying bricks or stones by polylith low reaches building block and is formed, upper reaches building block and low reaches building block are the polygonized structure of shape rule, all be equipped with the blotter between upper reaches dam facing and low reaches dam facing and the dam body enrockment. This slope protection structure mainly adopts regular polygon upper reaches building block of shape and low reaches building block to build by laying bricks or stones and forms, and the dam facing wholeness is good, the roughness is high, and construction convenience is quick, just is difficult for producing destructions such as becoming flexible, roll or slide in earthquake process, has good antidetonation effect, and the bank protection performance is better, the blotter makes dam body enrockment surface more level and more smooth, and do benefit to upper reaches building block and the low reaches building block is built by laying bricks or stones.
Description
Technical field
The utility model belongs to Hydraulic and Hydro-Power Engineering field, is specifically related to a kind of earth and rockfill dam dam facing protective slope structure.
Background technology
Earth and rockfill dam has the advantages such as selection is easy, cost is lower, structure is simple, anti-seismic performance is good, is a kind of dam type that Hydraulic and Hydro-Power Engineering field extensively adopts.The dam slope of earth and rockfill dam can be subject to storehouse water wave scour, along corrosion function and the dry and cracked effects of frost heave such as slope current scours, and under seismic loading, earth and rockfill dam destroys will first from dam crest portion, main manifestations is that upstream and downstream, dam crest portion dam facing enrockment loosens, tumbles, even local failure by leaking, therefore, the upstream and downstream dam facing of earth and rockfill dam must take bank protection measure.
Before the utility model, earth and rockfill dam dam facing generally takes boulder bank protection, dry stone pitching, stone masonry bank protection or other concrete revetment structures.Boulder bank protection is all comparatively large due to block stone volume and quality, cannot realize manually building by laying bricks or stones, construction inconvenience, and in mechanical building construction process, dam facing planeness is difficult to be guaranteed, and affects the overall appearance of dam body; Dry stone pitching can manually be built by laying bricks or stones, although dam facing planeness can be guaranteed, but due to block stone volume and quality less and different, cause that its anti-seismic performance is poor, bank protection performance is bad, such as, in " 512 " Wenchuan violent earthquake in 2008, Zi Ping-pu high CFRD downstream is domatic just have been occurred loosening at the dry stone wall near the dam crest, tumble and the destruction such as slippage; It is long to there is the construction period in stone masonry bank protection, the shortcomings such as construction costs and labour cost height.Pitched work structure and other concrete revetment structures can not grow vegetation due to surface, also also exist and the around inharmonic problem of ecological environment.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of easy construction and bank protection performance better earth and rockfill dam dam facing protective slope structure.
The utility model solves the technical scheme that its technical problem adopts: a kind of earth and rockfill dam dam facing protective slope structure, comprise the upstream dam facing and downstream dam facing that are separately positioned on earth and rockfill dam dam body enrockment upstream and downstream side surface, described upstream dam facing forms primarily of polylith upstream concrete block masonry, and described downstream dam facing forms primarily of polylith downstream concrete block masonry; The building block of described upstream and downstream building block are the polygonized structure of regular shape; Described upstream dam facing and be equipped with hardcore bed between downstream dam facing and dam body enrockment.
Further, the building block of described upstream is orthohexagonal precast concrete segment, and the building block of described downstream is orthohexagonal prefabricated non-fine concrete building block.
Further, the building block of described upstream is provided with drain hole, is provided with anti-filter geotextiles between described drain hole and hardcore bed.
Further, the minimum length of described anti-filter geotextiles is not less than the diameter of three times of drain holes, and the axial line conllinear of the geometric center of anti-filter geotextiles and drain hole.
Further, the length of side of described upstream building block is 30 ~ 50cm, thickness is 20 ~ 40cm; Described drain hole is arranged on the center of upstream building block, and its diameter is 50 ~ 100mm.
Further, the length of side of described downstream building block is 30 ~ 50cm, thickness is 20 ~ 40cm.
Further, the external surface of described downstream building block is provided with the organic humic soil layer being mixed with grass seeds.
Be further, hardcore bed between described upstream dam facing and dam body enrockment is two-layer and thickness is 20 ~ 30cm, and the maximum particle diameter of the hardcore bed medium stone wherein fitted with upstream dam facing is 10 ~ 20mm, the maximum particle diameter of hardcore bed medium stone that fits with dam body enrockment is 20 ~ 40mm; Hardcore bed between the building block of described downstream and dam body enrockment is one deck, and thickness is 20 ~ 30cm, and the maximum particle diameter of this hardcore bed medium stone is 10 ~ 20mm.
The beneficial effects of the utility model are: this protective slope structure mainly adopts the polygon upstream building block of regular shape and downstream concrete block masonry to form, dam facing good integrity, planeness are high, easy construction is quick, and not easily produce in seismic process and loosen, tumble or the destruction such as slippage, have good anti seismic efficiency, bank protection performance is better; Hardcore bed makes dam body enrockment surface more smooth, is beneficial to upstream building block and downstream concrete block masonry.The protective slope structure that orthohexagonal concrete block masonry becomes is more stable, and bank protection performance is better.When drain hole can ensure that storehouse water lands, dam facing free drainage, can avoid the dry and cracked destruction of dam body frost heave in winter; Anti-filter geotextiles makes fine grained in dam not easily be taken out of.Prefabricated non-fine concrete building block has the features such as hole is large, good water permeability; The organic humic soil layer being mixed with grass seeds is laid in downstream block surfaces, can in downstream dam facing growth vegetation, green vegetation not only has the function of beautifying the environment, and vegetation root system can also strengthen the stability of downstream dam slope and the ability of opposing inclined slope aspect current scour.
Accompanying drawing explanation
Fig. 1 is enforcement structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1;
Fig. 3 is the partial enlarged drawing at B place in Fig. 1;
Fig. 4 is M direction view in Fig. 1;
Fig. 5 is N direction view in Fig. 1;
Be labeled as in figure: upstream dam facing 1, upstream building block 11, drain hole 111, anti-filter geotextiles 112, downstream dam facing 2, downstream building block 21, organic humic soil layer 22, dam body enrockment 3, hardcore bed 4, core-wall 5.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Shown in composition graphs 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, a kind of earth and rockfill dam dam facing protective slope structure, comprise the upstream dam facing 1 and downstream dam facing 2 that are separately positioned on earth and rockfill dam dam body enrockment 3 upstream and downstream side surface, described upstream dam facing 1 is built by laying bricks or stones primarily of polylith upstream building block 11 and is formed, and described downstream dam facing 2 is built by laying bricks or stones primarily of polylith downstream building block 21 and formed; Described upstream building block 11 and downstream building block 21 are the polygonized structure of regular shape; Described upstream dam facing 1 and be equipped with hardcore bed 4 between downstream dam facing 2 and dam body enrockment 3.Wherein, the polygon of regular shape is often referred to the regular polygon on more than three limits, can certainly be trapezoidal, parallelogram etc.; Described upstream building block 11 and downstream building block 21 generally adopt concrete material to make.Preferably, adopt orthohexagonal precast concrete segment as upstream building block 11, adopt orthohexagonal prefabricated non-fine concrete building block as downstream building block 21; All build by laying bricks or stones by building material by laying bricks or stones between each upstream building block 11 and between each downstream building block 21; Orthohexagonal upstream building block 11 and downstream building block 21 Stability Analysis of Structures, the dam facing intensity of building rear formation by laying bricks or stones is higher, and protection effect is better.Hardcore bed 4 is mainly used in levelling, makes dam body enrockment 3 surface more smooth, is beneficial to building by laying bricks or stones of upstream building block 11 and downstream building block 21; Meanwhile, the gap on dam body enrockment 3 surface can be crammed by hardcore bed 4, enhances dam body enrockment 3 and resists slippage or the ability destroyed such as to cave in.
As a kind of preferred version of the present utility model, as shown in Figure 4, described upstream building block 11 is provided with drain hole 111, is provided with anti-filter geotextiles 112 between described drain hole 111 and hardcore bed 4.When drain hole 111 can ensure that storehouse water lands, upstream dam facing 1 free drainage, can avoid the dry and cracked destruction of dam body frost heave in winter; When anti-filter geotextiles 112 can ensure drain hole 111 draining, in dam, fine grained is not taken out of.
On the basis of the above, in order to reach better anti-filter effect, the minimum length of described anti-filter geotextiles 112 is not less than the diameter of three times of drain holes 111, and the axial line conllinear of the geometric center of anti-filter geotextiles 112 and drain hole 111.The minimum length of anti-filter geotextiles 112 refers to: anti-filter geotextiles 112 is crossed the length that its geometric center and two ends are positioned at the line of shortest length section at its edge; Namely as herein described being not less than refer to be more than or equal to.Concrete, the length of side of described upstream building block 11 is 30 ~ 50cm, thickness is 20 ~ 40cm; Described drain hole 111 is arranged on the center of upstream building block 11, and its diameter is 50 ~ 100mm.The length of side of described downstream building block 21 is 30 ~ 50cm, thickness is 20 ~ 40cm.Upstream building block 11 and the downstream building block 21 of above-mentioned size were both beneficial to construction, had again good protection effect.
As another preferred version of the present utility model, as shown in Figure 5, the external surface of described downstream building block 21 is provided with the organic humic soil layer 22 being mixed with grass seeds.After earth and rockfill dam construction completes; the grass seeds be mixed with in organic humic soil layer 22 of grass seeds starts growth; finally form fresh careless covering layer on the surface of downstream dam facing 2; this fresh careless covering layer can protect downstream dam facing 2; make it not by directly washing away along slope current; not only there is the function of beautifying the environment, the stability of downstream dam facing 2, erosion resistibility and shock resistance can also be strengthened.
Preferably, hardcore bed between described upstream dam facing 1 and dam body enrockment 34 is for two-layer and thickness is 20 ~ 30cm, and the maximum particle diameter of hardcore bed 4 medium stone wherein fitted with upstream dam facing 1 is 10 ~ 20mm, the maximum particle diameter of hardcore bed 4 medium stone that fits with dam body enrockment 3 is 20 ~ 40mm; Hardcore bed 4 between described downstream building block 21 and dam body enrockment 3 is one deck, and thickness is 20 ~ 30cm, and the maximum particle diameter of this hardcore bed 4 medium stone is 10 ~ 20mm.Hardcore bed 4 selection of above-mentioned size easily and be more conducive to staff's construction.
For the method for above-mentioned a kind of earth and rockfill dam dam facing protective slope structure of constructing, comprise the following steps:
A, placement in layers, roll earth and rockfill dam dam body enrockment 3, the upstream and downstream of the dam body enrockment 3 after rolling lay hardcore bed 4 on the surface;
B, hardcore bed 4 surface after having laid is repaired smooth, build upstream building block 11 and downstream building block 21 on the surface respectively by laying bricks or stones at upstream and downstream hardcore bed 4; Described upstream building block 11 and downstream building block 21 are the polygonized structure of regular shape;
C, repetition step a and b are till reaching design of dam body elevation; Build polylith upstream building block 11 in side, dam body upstream and downstream by laying bricks or stones and downstream building block 21 forms upstream dam facing 1 and downstream dam facing 2 respectively.
Preferably, in step a, namely start after often having rolled one deck dam body enrockment 3 to lay hardcore bed 4 on its surface; Wherein, the surface being positioned at dam body enrockment 3 upstream side is laid the hardcore bed 4 that two layers of thickness is 20 ~ 30cm, and the maximum particle diameter of hardcore bed 4 medium stone being positioned at upside be 10 ~ 20mm, the maximum particle diameter of hardcore bed 4 medium stone that is positioned at downside is 20 ~ 40mm; The surface being positioned at dam body enrockment 3 downstream is laid hardcore bed 4 that a layer thickness is 20 ~ 30cm, the maximum particle diameter of this hardcore bed 4 medium stone is 10 ~ 20mm;
In step b, after the hardcore bed 4 on every layer of dam body enrockment 3 surface has been laid, adopt backhoe to repair slope process to hardcore bed 4 surface, and laid upstream building block 11 and downstream building block 21; Described upstream building block 11 is provided with drain hole 111, often lays one piece of upstream building block 11 and all between described drain hole 111 and hardcore bed 4, arranges one piece of anti-filter geotextiles 112; Often lay one piece of downstream building block 21 and organic humic soil layer 22 that more than one deck is mixed with grass seeds is set all on its outer surface.
Embodiment
Certain core wall rockfill dam height of dam H=200m, its protective slope structure comprises the upstream dam facing 1 and downstream dam facing 2 that are separately positioned on dam body enrockment 3 upstream and downstream side surface; Described upstream dam facing 1 is built by laying bricks or stones primarily of polylith upstream building block 11 and is formed, described upstream building block 11 is orthohexagonal precast concrete segment, the length of side of upstream building block 11 is 30cm, thickness is 20cm, and the center of upstream building block 11 is provided with the drain hole 111 that diameter is 50mm; Described downstream dam facing 2 is built by laying bricks or stones primarily of polylith downstream building block 21 and is formed, described downstream building block 21 is orthohexagonal prefabricated non-fine concrete building block, the length of side of downstream building block 21 is 40cm, thickness is 20cm, the external surface of downstream building block 21 is provided with the organic humic soil layer 22 being mixed with grass seeds; All build by laying bricks or stones by building material by laying bricks or stones between each building block; Described upstream dam facing 1 and be equipped with hardcore bed 4 between downstream dam facing 2 and dam body enrockment 3, hardcore bed between described upstream dam facing 1 and dam body enrockment 34 is for two-layer and thickness is 20cm, and the maximum particle diameter of hardcore bed 4 medium stone wherein fitted with upstream dam facing 1 is 15mm, the maximum particle diameter of hardcore bed 4 medium stone that fits with dam body enrockment 3 is 30mm; The thickness of the hardcore bed 4 between described downstream building block 21 and dam body enrockment 3 is 20cm, the maximum particle diameter of rubble is 15mm; Be provided with foursquare anti-filter geotextiles 112 between described drain hole 111 and hardcore bed 4, the length of side of described anti-filter geotextiles 112 is 150mm, and the axial line conllinear of the geometric center of anti-filter geotextiles 112 and drain hole 111.
The work progress of above-mentioned core wall rockfill dam:
1), placement in layers, roll earth and rockfill dam dam body enrockment 3, after often having rolled one deck dam body enrockment 3, lay hardcore bed 4 on the surface in the upstream and downstream of dam body enrockment 3; Wherein, the surface being positioned at dam body enrockment 3 upstream side is laid the hardcore bed 4 that two layers of thickness is 20cm, and the maximum particle diameter of hardcore bed 4 medium stone being positioned at upside be 15mm, the maximum particle diameter of hardcore bed 4 medium stone that is positioned at downside is 30mm; The surface being positioned at dam body enrockment 3 downstream is laid hardcore bed 4 that a layer thickness is 20cm, the maximum particle diameter of this hardcore bed 4 medium stone is 15mm;
2), after the hardcore bed 4 on every layer of dam body enrockment 3 surface has been laid, adopted backhoe to repair slope process to hardcore bed 4 surface, hardcore bed 4 surface has been repaired smooth; Then, expect upstream building block 11 to build by laying bricks or stones on hardcore bed 4 surface being positioned at dam body enrockment 3 upstream side with building by laying bricks or stones and with building material by laying bricks or stones, downstream building block 21 built by laying bricks or stones on hardcore bed 4 surface being positioned at dam body enrockment 3 downstream; Wherein, upstream building block 11 is orthohexagonal precast concrete segment, its length of side is 30cm, thickness is 20cm, the center of upstream building block 11 is provided with the drain hole 111 that diameter is 50mm, the square anti-filter geotextiles 112 that the length of side is 150mm is set between drain hole 111 and hardcore bed 4, when arranging, makes the geometric center of anti-filter geotextiles 112 and the axial line conllinear of drain hole 111; Downstream building block 21 is orthohexagonal prefabricated non-fine concrete building block, and its length of side is 40cm, thickness is 20cm, and the external surface of downstream building block 21 arranges organic humic soil layer 22 that one deck is mixed with grass seeds;
3), step 1 is repeated) and 2) till reaching design of dam body elevation; Build polylith upstream building block 11 in side, dam body upstream and downstream by laying bricks or stones and downstream building block 21 forms upstream dam facing 1 and downstream dam facing 2 respectively.
Claims (8)
1. an earth and rockfill dam dam facing protective slope structure, it is characterized in that: comprise the upstream dam facing (1) and downstream dam facing (2) that are separately positioned on earth and rockfill dam dam body enrockment (3) upstream and downstream side surface, described upstream dam facing (1) is built by laying bricks or stones primarily of polylith upstream building block (11) and is formed, and described downstream dam facing (2) is built by laying bricks or stones primarily of polylith downstream building block (21) and formed; Described upstream building block (11) and downstream building block (21) are the polygonized structure of regular shape; Described upstream dam facing (1) and be equipped with hardcore bed (4) between downstream dam facing (2) and dam body enrockment (3).
2. a kind of earth and rockfill dam dam facing protective slope structure as claimed in claim 1, it is characterized in that: described upstream building block (11) is orthohexagonal precast concrete segment, described downstream building block (21) is orthohexagonal prefabricated non-fine concrete building block.
3. a kind of earth and rockfill dam dam facing protective slope structure as claimed in claim 1 or 2, it is characterized in that: described upstream building block (11) is provided with drain hole (111), between described drain hole (111) and hardcore bed (4), be provided with anti-filter geotextiles (112).
4. a kind of earth and rockfill dam dam facing protective slope structure as claimed in claim 3, it is characterized in that: the minimum length of described anti-filter geotextiles (112) is not less than the diameter of three times of drain holes (111), and the axial line conllinear of the geometric center of anti-filter geotextiles (112) and drain hole (111).
5. a kind of earth and rockfill dam dam facing protective slope structure as claimed in claim 3, is characterized in that: the length of side of described upstream building block (11) is 30 ~ 50cm, thickness is 20 ~ 40cm; Described drain hole (111) is arranged on the center of upstream building block (11), and its diameter is 50 ~ 100mm.
6. a kind of earth and rockfill dam dam facing protective slope structure as claimed in claim 2, is characterized in that: the length of side of described downstream building block (21) is 30 ~ 50cm, thickness is 20 ~ 40cm.
7. a kind of earth and rockfill dam dam facing protective slope structure as described in claim 1,2 or 6, is characterized in that: the external surface of described downstream building block (21) is provided with the organic humic soil layer (22) being mixed with grass seeds.
8. a kind of earth and rockfill dam dam facing protective slope structure as claimed in claim 1 or 2, it is characterized in that: the hardcore bed (4) between described upstream dam facing (1) and dam body enrockment (3) is for two-layer and thickness is 20 ~ 30cm, and the maximum particle diameter of hardcore bed (4) medium stone wherein fitted with upstream dam facing (1) is 10 ~ 20mm, the maximum particle diameter of hardcore bed (4) medium stone that fits with dam body enrockment (3) is 20 ~ 40mm; Hardcore bed (4) between described downstream building block (21) and dam body enrockment (3) is one deck, and thickness is 20 ~ 30cm, and the maximum particle diameter of this hardcore bed (4) medium stone is 10 ~ 20mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520782603.1U CN205000298U (en) | 2015-10-10 | 2015-10-10 | Embankment dam dam facing slope protection structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520782603.1U CN205000298U (en) | 2015-10-10 | 2015-10-10 | Embankment dam dam facing slope protection structure |
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| CN205000298U true CN205000298U (en) | 2016-01-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155477A (en) * | 2015-10-10 | 2015-12-16 | 中国电建集团成都勘测设计研究院有限公司 | High earth-rock dam slope protection structure and construction method thereof |
| CN112195874A (en) * | 2020-09-08 | 2021-01-08 | 中国电建集团西北勘测设计研究院有限公司 | High homogeneity dam of dispersion soil |
-
2015
- 2015-10-10 CN CN201520782603.1U patent/CN205000298U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155477A (en) * | 2015-10-10 | 2015-12-16 | 中国电建集团成都勘测设计研究院有限公司 | High earth-rock dam slope protection structure and construction method thereof |
| CN112195874A (en) * | 2020-09-08 | 2021-01-08 | 中国电建集团西北勘测设计研究院有限公司 | High homogeneity dam of dispersion soil |
| CN112195874B (en) * | 2020-09-08 | 2022-02-08 | 中国电建集团西北勘测设计研究院有限公司 | High homogeneity dam of dispersion soil |
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