CN105133647B - Deep covering layer earth and rockfill dam dam foundation gallery and its construction method - Google Patents
Deep covering layer earth and rockfill dam dam foundation gallery and its construction method Download PDFInfo
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- CN105133647B CN105133647B CN201510648778.8A CN201510648778A CN105133647B CN 105133647 B CN105133647 B CN 105133647B CN 201510648778 A CN201510648778 A CN 201510648778A CN 105133647 B CN105133647 B CN 105133647B
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Abstract
The invention discloses a kind of deep covering layer earth and rockfill dam dam foundation gallery and its construction method.The deep covering layer earth and rockfill dam dam foundation gallery, including riverbed gallery section and the bank slope gallery section for being arranged on riverbed gallery section two ends；The riverbed gallery section is arranged on Riverbed, and domatic inclination of the bank slope gallery section by the end of riverbed gallery section along bank slope coating is arranged in the bank slope cover surface after removing table soil upward.This method is used for the deep covering layer earth and rockfill dam dam foundation gallery for constructing above-mentioned.By setting bank slope gallery section to reduce bank slope coating excavated volume, the construction of duration, more conducively dam foundation gallery are shortened；Meanwhile, bank slope coating excavated volume reduces and then decreases earth and rockfill dam dam embankment material consumption；Moreover, bank slope section dam foundation grouting construction synchronous with dam embankment can be carried out, the straight line duration is not accounted for；In addition, during earth and rockfill dam is run, it is the dam body to bank slope section, the maintenance of the dam foundation and cut-pff wall, monitoring to be more conducive to by the dam foundation gallery.
Description
Technical field
The invention belongs to Hydraulic and Hydro-Power Engineering field, and in particular to a kind of deep covering layer earth and rockfill dam dam foundation gallery and its apply
Work method.
Background technology
In deep covering layer earth and rockfill dam, dam foundation gallery is using relatively broad.The effect of dam foundation gallery is mainly the construction time
Do not account for foundation grouting in straight line duration, gallery synchronous with dam embankment to carry out, the runtime can play safety inspection, supplementary grouting etc.
Effect.Existing deep covering layer earth and rockfill dam dam foundation gallery generally sets gallery on river-bed section coating, and two bank slopes remove covering
Layer and be excavated to fresh matrix set patch slope concrete slab, as shown in Figure 1；River-bed section gallery is constructed before earth and rockfill dam dam embankment and poured
Build, carry out river-bed section curtain grouting in foundation of dam construction, Curtain Grouting Construction and the same stepping of dam embankment after gallery completion in gallery
OK；Bank slope section first carries out patch slope concrete slab construction, and recycling patch slope concrete slab carries out bank slope dam foundation curtain as lid and filled again
Slurry construction.
The problem of existing deep covering layer earth and rockfill dam dam foundation gallery is present has：1), for bank slope coating " deep trouth " position,
Removing bank slope coating then increases excavated volume and dam embankment amount to fresh matrix greatly, and accounts for the straight line duration, and construction cost is high；
2), bank slope is also unfavorable for runtime maintenance using the structure of patch slope concrete slab.
The content of the invention
Both it had been beneficial to construction period construction the technical problem to be solved in the present invention is to provide a kind of, the depth of runtime maintenance is beneficial to again
Thick-covering earth and rockfill dam dam foundation gallery.
The technical solution adopted for the present invention to solve the technical problems is：Deep covering layer earth and rockfill dam dam foundation gallery, including
Riverbed gallery section and the bank slope gallery section for being arranged on riverbed gallery section two ends；The riverbed gallery section is arranged on Riverbed
On, domatic inclination of the bank slope gallery section by the end of riverbed gallery section along bank slope coating is arranged on removing table soil upward
In bank slope cover surface afterwards.
It is further that the bank slope gallery section includes concrete wall, ladder bottom and by concrete wall and ladder bottom
The inner chamber surrounded.
It is further that the ladder bottom includes the bank slope that step-like ladder walked and be arranged on ladder step width both sides
Gallery bottom plate.
It is further that ladder step width is provided with draining wherein between the bank slope gallery bottom plate and concrete wall of side
Ditch.
It is further that the bottom of the riverbed gallery section is provided with to pass through Riverbed straight down and stretch into basement rock
River-bed section cut-pff wall, the bottom of bank slope gallery section is provided with straight down through bank slope coating and the bank that stretches into basement rock
Slope section cut-pff wall；River-bed section cut-pff wall and bank slope the section cut-pff wall is integral type structure.
It is further that the riverbed gallery section is provided with reinforcement structure and sealing structure with bank slope gallery section junction.
It is further that the reinforcement structure is along the transition circumferentially disposed with bank slope gallery section junction of riverbed gallery section
Circular arc, the sealing structure is along the riverbed gallery section antiseepage film circumferentially disposed with bank slope gallery section junction.
It is further that the opening positioned at bank slope gallery section upper end is dam foundation gallery gateway, and the dam foundation gallery comes in and goes out
Go out to enter the room provided with gallery at the dam crest of earth and rockfill dam where mouth is located at the dam crest of earth and rockfill dam, and dam foundation gallery gateway.
It is used for the method for above-mentioned deep covering layer earth and rockfill dam dam foundation gallery of constructing present invention also offers a kind of, including it is following
Step：
A, constructed before earth and rockfill dam is filled, set upper end to expose river first in Riverbed and bank slope coating
The cut-pff wall that bed coating and bank slope cover surface, lower end are stretched into basement rock；The cut-pff wall include river-bed section cut-pff wall and
Bank slope section cut-pff wall；
B, cleaning Riverbed surface, and the setting riverbed corridor on the Riverbed surface with river-bed section cut-pff wall
Road section；The table for removing bank slope coating is native, and the domatic inclination from the end of riverbed gallery section along bank slope coating is upward
Bank slope gallery section is set, and makes bank slope gallery section positioned at the surface of bank slope section cut-pff wall；
C, in riverbed gallery section with bank slope gallery section junction reinforcement structure and sealing structure are set, and in riverbed gallery section
The attachment structure being connected with the core-wall of earth and rockfill dam is provided for the outer surface of bank slope gallery section；
D, pass through riverbed gallery section and bank slope gallery section carries out grout curtain.
It is further that the above method also includes step e and step f；
In step c, the attachment structure includes being arranged in riverbed gallery section and bank slope gallery section upstream side base surface
Bed course and the loaded filter being arranged in riverbed gallery section and bank slope gallery section downstream base surface, in addition to from it is interior outward successively
It is arranged on riverbed gallery section and bank slope gallery section outer surface and the waterproofing and leakage-stopping oxidant layer on the upside of bed course and loaded filter, pitch
Impervious barrier, composite earthwork film layer, reinforcing band steel and highly plastic clay layer；
In step d, Curtain Grouting Construction is synchronous with earth and rockfill dam filling construction to be carried out；
E, earth and rockfill dam dam body is filled to design altitude, and cause the dam foundation gallery gateway of bank slope gallery section upper end to be located at soil
The dam crest of masonry dam, and setting gallery to go out to enter the room at the dam crest of earth and rockfill dam where dam foundation gallery gateway；
F, build by laying bricks or stones in step-like ladder step on bank slope gallery section inner bottom surface, and in the bank of ladder step width wherein side
Gutter is set between slope gallery bottom plate and concrete wall.
The beneficial effects of the invention are as follows：By setting bank slope gallery section to reduce bank slope coating excavated volume, it is to avoid open
The links such as material transport, landfill are dug, the construction that bank slope coating excavates duration, more conducively dam foundation gallery is saved；Meanwhile, because
Reduced for bank slope coating excavated volume, and then decrease earth and rockfill dam dam embankment material consumption, and cultivated land occupancy, immigrant can be reduced
Resettlement and vegetation deterioration, are conducive to environmental protection；Moreover, after the completion of the section construction of bank slope gallery, bank slope section dam can be carried out using it
Base grouting construction, synchronous with dam embankment can carry out, the straight line duration is not accounted for；In addition, during earth and rockfill dam is run, passing through the dam foundation
Maintenance, monitoring of the gallery to dam body, the dam foundation and cut-pff wall are more convenient, are particularly to the dam body, the dam foundation and cut-pff wall of bank slope section
Maintenance, monitoring.
Brief description of the drawings
Fig. 1 is the implementation structural representation of existing deep covering layer earth and rockfill dam dam foundation gallery；
Fig. 2 is the implementation structural representation of deep covering layer earth and rockfill dam dam foundation gallery in the present invention；
Fig. 3 is the partial enlarged drawing at A in Fig. 2；
Fig. 4 is the sectional view of the line B-B along along Fig. 2；
Fig. 5 is the sectional view of the line C-C along along Fig. 4；
Fig. 6 is the sectional view of the line D-D along along Fig. 5；
Marked in figure：Riverbed gallery section 1, bank slope gallery section 2, concrete wall 21, ladder bottom 22, ladder step 221, bank slope
Gallery bottom plate 222, gutter 223, inner chamber 23, dam foundation gallery gateway 24, Riverbed 3, bank slope coating 4, basement rock 5,
Earth and rockfill dam 6, gallery go out to enter the room 61.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Fig. 2 deep covering layer earth and rockfill dam dam foundation gallery, including riverbed gallery section 1 and it is arranged on riverbed gallery section 1
The bank slope gallery section 2 at two ends；The riverbed gallery section 1 is arranged on Riverbed 3, and the bank slope gallery section 2 is by riverbed corridor
Domatic inclination of the end of road section 1 along bank slope coating 4 is arranged on the surface of bank slope coating 4 after removing table soil upward.
The dam foundation gallery is generally constructed before earth and rockfill dam 6 is filled, and sets anti-in Riverbed 3 and bank slope coating 4 first
Wall is oozed, then each gallery section is constructed.The mode for riverbed gallery section 1 of constructing is with existing dam foundation gallery in Riverbed 3
The upper mode for setting gallery is identical.Need first to dispose the table soil on bank slope coating 4 before construction bank slope gallery section 2, and will
The surface equating of bank slope coating 4 is whole, and the domatic inclination then along bank slope coating 4 pours bank slope gallery section 2 upward.
General, because riverbed gallery section 1 and the flex point that 2 junctions of bank slope gallery section are the dam foundation gallery, the position
The place of putting is influenceed larger by the differential settlement between Riverbed 3 and bank slope coating 4, so in riverbed gallery section 1 and bank
Slope 2 junctions of gallery section are typically provided with reinforcement structure and sealing structure, to ensure between riverbed gallery section 1 and bank slope gallery section 2
Bonding strength and barrier performance；The reinforcement structure can have numerous embodiments, for example：Be arranged on riverbed gallery section 1 with
Dowel, reinforcement, annular band steel, flexible joint or expansion feet connecting structure of 2 junctions of bank slope gallery section etc.；It is described close
Seal structure can have numerous embodiments, for example：It is arranged on sealing ring, the week of 2 junctions of riverbed gallery section 1 and bank slope gallery section
Enclose waterstop, seal coating, airtight and watertight padding etc.；Sealing structure is to be arranged on riverbed gallery section 1 to be connected with bank slope gallery section 2
The leakage preventing structure at place.It is preferred that, as shown in figure 3, the reinforcement structure is along riverbed gallery section 1 and 2 junctions of bank slope gallery section
Circumferentially disposed transition arc, the sealing structure is to prevent along riverbed gallery section 1 and 2 junctions of bank slope gallery section are circumferentially disposed
Ooze film 11.
Specifically, as shown in figure 4, bank slope gallery section 2 includes concrete wall 21, ladder bottom 22 and by concrete wall
21 and the inner chamber 23 that surrounds of ladder bottom 22；The concrete wall 21 is generally included positioned at the width both sides of ladder bottom 22
Two abutment walls and the crown being connected at the top of two abutment walls.With reference to shown in Fig. 4, Fig. 5 and Fig. 6, the ladder bottom 22 includes platform
The ladder step 221 of scalariform and the bank slope gallery bottom plate 222 for being arranged on 221 width both sides of ladder step.Ladder step 221 is in step-like, profit
Walked in workmen or maintainer in gallery section；Bank slope gallery bottom plate 222 is inclined plane, beneficial to by various instruments or
Construction expects sliding to riverbed gallery section 1.In order to avoid gallery internal water accumulation, the bank slope corridor in 221 widths of ladder step wherein side
Gutter 223 is provided between road bottom plate 222 and concrete wall 21.
Specifically, the bottom of the riverbed gallery section 1 is provided with and passes through Riverbed 3 straight down and stretch into basement rock 5
River-bed section cut-pff wall, the bottom of bank slope gallery section 2 provided with through bank slope coating 4 and stretching into basement rock 5 straight down
Bank slope section cut-pff wall；River-bed section cut-pff wall and bank slope the section cut-pff wall is integral type structure.Can by the earth and rockfill dam gallery
Easily just to be overhauled in the runtime of earth and rockfill dam 6 to the cut-pff wall for being arranged on its bottom, the earth and rockfill dam corridor is taken full advantage of
The advantage in road, it is ensured that the barrier performance of earth and rockfill dam.
Workmen or maintainer pass in and out the dam foundation gallery for convenience, then as shown in Fig. 2 positioned at bank slope gallery section 2
The opening of upper end is dam foundation gallery gateway 24, and the dam foundation gallery gateway 24 is located at the dam crest of earth and rockfill dam 6, and dam foundation gallery
Go out to enter the room 61 provided with gallery at the dam crest of the place earth and rockfill dam 6 of gateway 24.It will generally be placed at dam foundation gallery gateway 24
House goes out to enter the room 61 as gallery, and gallery goes out to enter the room and 61 rainwater can be avoided to enter the dam foundation gallery, while being also used as work
Make the place of having a rest of personnel.
The construction method of deep covering layer earth and rockfill dam dam foundation gallery, the deep covering layer earth and rockfill dam dam foundation above-mentioned for constructing
Gallery, comprises the following steps：
A, constructed before earth and rockfill dam 6 is filled, set upper end to reveal in Riverbed 3 and bank slope coating 4 first
Go out the cut-pff wall that Riverbed 3 and the surface of bank slope coating 4, lower end are stretched into basement rock 5；The cut-pff wall is anti-including river-bed section
Ooze wall and bank slope section cut-pff wall；
B, cleaning Riverbed 3 surface, and riverbed is set on the surface of Riverbed 3 with river-bed section cut-pff wall
Gallery section 1；Remove the table soil of bank slope coating 4, and the domatic inclination from the end of riverbed gallery section 1 along bank slope coating 4
Bank slope gallery section 2 is set upward, and bank slope gallery section 2 is located at the surface of bank slope section cut-pff wall, as shown in Figure 2；Riverbed
Gallery section 1 and bank slope gallery section 2 are typically directly poured and formed；
C, in riverbed gallery section 1 with 2 junctions of bank slope gallery section reinforcement structure and sealing structure are set, and in riverbed gallery
Section 1 is provided for the attachment structure being connected with the core-wall of earth and rockfill dam 6 with the outer surface of bank slope gallery section 2；It is generally described to strengthen knot
Structure is that the sealing structure is along riverbed corridor along the transition arc circumferentially disposed with 2 junctions of bank slope gallery section of riverbed gallery section 1
The antiseepage film 11 circumferentially disposed with 2 junctions of bank slope gallery section of road section 1；In this step, the attachment structure includes being arranged on
Riverbed gallery section 1 and bed course on bank slope gallery 2 upstream side base surfaces of section and it is arranged on riverbed gallery section 1 and bank slope gallery section
Loaded filter on 2 downstream base surfaces, in addition to riverbed gallery section 1 and bank slope gallery 2 appearances of section are successively set on outward from interior
Waterproofing and leakage-stopping oxidant layer, pitch impervious barrier, composite earthwork film layer on face and on the upside of bed course and loaded filter, reinforce band steel and
Highly plastic clay layer；Highly plastic clay used refers to the clay that plasticity index is more than or equal to 15 in highly plastic clay layer；
D, pass through riverbed gallery section 1 and bank slope gallery 2 pairs of dam foundations of section or cut-pff wall carries out grout curtain；In order to shorten work
Phase, usual Curtain Grouting Construction is synchronous with earth and rockfill dam filling construction to be carried out；
E, the dam body of earth and rockfill dam 6 is filled to design altitude, and 2 upper end dam foundation gallery gateways 24 of bank slope gallery section are located at
The dam crest of earth and rockfill dam 6, and set gallery to go out to enter the room 61 at the dam crest of the place earth and rockfill dam 6 of dam foundation gallery gateway 24；Gallery goes out
Enter the room 61 houses being typically located at dam foundation gallery gateway 24；
F, build by laying bricks or stones in step-like ladder step 221 on bank slope gallery 2 inner bottom surfaces of section, and in 221 widths of ladder step wherein
Gutter 223 is set between the bank slope gallery bottom plate 222 and concrete wall 21 of side.
Claims (9)
1. the construction method of deep covering layer earth and rockfill dam dam foundation gallery, it is characterised in that following deep covering layer for constructing
Earth and rockfill dam dam foundation gallery；
The deep covering layer earth and rockfill dam dam foundation gallery, including riverbed gallery section (1) and it is arranged on riverbed gallery section (1) two ends
Bank slope gallery section (2)；The riverbed gallery section (1) is arranged on Riverbed (3), and the bank slope gallery section (2) is by riverbed
Domatic inclination of the end of gallery section (1) along bank slope coating (4) is arranged on the bank slope coating (4) after removing table soil upward
On surface；
The construction method comprises the following steps：
A, constructed before earth and rockfill dam (6) is filled, first in the interior setting upper end of Riverbed (3) and bank slope coating (4)
Expose the cut-pff wall that Riverbed (3) and bank slope coating (4) surface, lower end are stretched into basement rock (5)；The cut-pff wall includes
River-bed section cut-pff wall and bank slope section cut-pff wall；
B, cleaning Riverbed (3) surface, and riverbed is set on Riverbed (3) surface with river-bed section cut-pff wall
Gallery section (1)；The table soil of bank slope coating (4) is removed, and from the end of riverbed gallery section (1) along bank slope coating (4)
Domatic inclination sets bank slope gallery section (2) upward, and makes bank slope gallery section (2) positioned at the surface of bank slope section cut-pff wall；
C, in riverbed gallery section (1) with bank slope gallery section (2) junction reinforcement structure and sealing structure are set, and in riverbed gallery
Section (1) is provided for the attachment structure being connected with the core-wall of earth and rockfill dam (6) with the outer surface of bank slope gallery section (2)；
D, pass through riverbed gallery section (1) and bank slope gallery section (2) progress grout curtain.
2. the construction method of deep covering layer earth and rockfill dam dam foundation gallery as claimed in claim 1, it is characterised in that：The bank slope
Gallery section (2) include concrete wall (21), ladder bottom (22) and by concrete wall (21) and ladder bottom (22) surround it is interior
Chamber (23).
3. the construction method of deep covering layer earth and rockfill dam dam foundation gallery as claimed in claim 2, it is characterised in that：The ladder
Bottom (22) includes the bank slope gallery bottom plate that step-like ladder walks (221) and is arranged on ladder step (221) width both sides
(222)。
4. the construction method of deep covering layer earth and rockfill dam dam foundation gallery as claimed in claim 3, it is characterised in that：Ladder step
(221) gutter (223) are provided between the bank slope gallery bottom plate (222) and concrete wall (21) of width wherein side.
5. the construction method of deep covering layer earth and rockfill dam dam foundation gallery as claimed in claim 1, it is characterised in that：The riverbed
The bottom of gallery section (1) is provided with passes through Riverbed (3) and the river-bed section cut-pff wall stretched into basement rock (5), institute straight down
The bottom of bank slope gallery section (2) is stated provided with through bank slope coating (4) and stretching into the section antiseepage of the bank slope in basement rock (5) straight down
Wall；River-bed section cut-pff wall and bank slope the section cut-pff wall is integral type structure.
6. the construction method of deep covering layer earth and rockfill dam dam foundation gallery as claimed in claim 1, it is characterised in that：The riverbed
Gallery section (1) is provided with reinforcement structure and sealing structure with bank slope gallery section (2) junction.
7. the construction method of deep covering layer earth and rockfill dam dam foundation gallery as claimed in claim 6, it is characterised in that：It is described to strengthen
Structure is that the sealing structure is edge along riverbed gallery section (1) transition arc circumferentially disposed with bank slope gallery section (2) junction
Riverbed gallery section (1) antiseepage film (11) circumferentially disposed with bank slope gallery section (2) junction.
8. the construction method of the deep covering layer earth and rockfill dam dam foundation gallery as any one of claim 1 to 7, its feature exists
In：Opening positioned at bank slope gallery section (2) upper end is dam foundation gallery gateway (24), and the dam foundation gallery gateway (24) is located at
Go out to enter the room (61) provided with gallery at the dam crest of earth and rockfill dam (6) where the dam crest of earth and rockfill dam (6), and dam foundation gallery gateway (24).
9. the construction method of deep covering layer earth and rockfill dam dam foundation gallery as claimed in claim 1, it is characterised in that：Also include step
Rapid e and step f；
In step c, the attachment structure includes being arranged in riverbed gallery section (1) and bank slope gallery section (2) upstream side base surface
Bed course and the loaded filter that is arranged in riverbed gallery section (1) and bank slope gallery section (2) downstream base surface, in addition to from interior
It is successively set on outward on riverbed gallery section (1) and bank slope gallery section (2) outer surface and anti-on the upside of bed course and loaded filter
Water blocking leakage oxidant layer, pitch impervious barrier, composite earthwork film layer, reinforcing band steel and highly plastic clay layer；
In step d, Curtain Grouting Construction is synchronous with earth and rockfill dam filling construction to be carried out；
E, earth and rockfill dam (6) dam body is filled to design altitude, and cause the dam foundation gallery gateway (24) of bank slope gallery section (2) upper end
Dam crest positioned at earth and rockfill dam (6), and setting gallery to go out to enter the room at the dam crest of earth and rockfill dam (6) where dam foundation gallery gateway (24)
(61)；
F, build by laying bricks or stones in step-like ladder step (221) on bank slope gallery section (2) inner bottom surface, and ladder step (221) width its
Gutter (223) are set between the bank slope gallery bottom plate (222) and concrete wall (21) of middle side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510648778.8A CN105133647B (en) | 2015-10-09 | 2015-10-09 | Deep covering layer earth and rockfill dam dam foundation gallery and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510648778.8A CN105133647B (en) | 2015-10-09 | 2015-10-09 | Deep covering layer earth and rockfill dam dam foundation gallery and its construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105133647A CN105133647A (en) | 2015-12-09 |
| CN105133647B true CN105133647B (en) | 2017-09-19 |
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ID=54719194
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| CN201510648778.8A Active CN105133647B (en) | 2015-10-09 | 2015-10-09 | Deep covering layer earth and rockfill dam dam foundation gallery and its construction method |
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Families Citing this family (1)
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| CN107729688B (en) * | 2017-11-09 | 2020-12-25 | 成都希盟泰克科技发展有限公司 | Dam engineering digital modeling optimization method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB746630A (en) * | 1953-03-11 | 1956-03-14 | Griffin Engineering Company Pr | Earth or rubble dam for dikes and barrages |
| CN102011412A (en) * | 2010-12-31 | 2011-04-13 | 中国水电顾问集团中南勘测设计研究院 | Concrete anti-seepage wall joint |
| CN104404919B (en) * | 2014-12-03 | 2017-02-22 | 中国电建集团成都勘测设计研究院有限公司 | Dam foundation corridor and bank slope bedrock connecting structure |
| CN205012368U (en) * | 2015-10-09 | 2016-02-03 | 中国电建集团成都勘测设计研究院有限公司 | Deep overburden embankment dam corridor |
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