CN106836123A - Geomembrane anti-seepage drainage system for newly-built earth dam and for effecting a radical cure disease danger earth dam - Google Patents
Geomembrane anti-seepage drainage system for newly-built earth dam and for effecting a radical cure disease danger earth dam Download PDFInfo
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- CN106836123A CN106836123A CN201710192397.2A CN201710192397A CN106836123A CN 106836123 A CN106836123 A CN 106836123A CN 201710192397 A CN201710192397 A CN 201710192397A CN 106836123 A CN106836123 A CN 106836123A
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- earth dam
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- rhone
- geomembrane
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- 201000010099 disease Diseases 0.000 title claims abstract description 20
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 239000004576 sand Substances 0.000 claims abstract description 65
- 239000002689 soil Substances 0.000 claims abstract description 44
- 239000004568 cement Substances 0.000 claims abstract description 30
- 239000004746 geotextile Substances 0.000 claims abstract description 18
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 9
- 239000004575 stone Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 10
- 230000000630 rising effect Effects 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 2
- 210000005056 cell body Anatomy 0.000 claims 2
- 239000002362 mulch Substances 0.000 abstract 1
- 239000002985 plastic film Substances 0.000 abstract 1
- 229920006255 plastic film Polymers 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/128—Coherent linings made on the spot, e.g. cast in situ, extruded on the spot
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a kind of for newly-built earth dam and for effecting a radical cure the geomembrane anti-seepage drainage system of disease danger earth dam, including stack gradually be laid on earth dam meet water it is domatic on soil cement sheath, sand bedding course, geomembrane, geotextiles, overcoat in plastic film mulch；Earth dam meet water domatic upper spacing be provided with multiple tracks as rhone antiskid groove；Earth dam upstream face is provided with one water stop along toe, and the sidepiece in water stop body is provided with collecting-tank；Rhone is connected with collecting-tank top, and collecting-tank bottom is communicated to outside the drainage prism of earth dam by horizontally disposed dam bottom drainpipe through earth dam bottom；Sand bedding course includes the coarse sand bed course being laid on soil cement sheath and the thin sand being laid on coarse sand bed course；Overcoat includes the face sheath, middle sheath, the clayed soil layer that set gradually from top to bottom on film.Being seeped water under film can rapidly be pooled to collecting-tank and by the discharge of dam bottom drainpipe by the drainage system that vertical, horizontal is set, and " stifled " combines with " thin ", it is ensured that the safety of earth dam.
Description
Technical field
The present invention relates to hydrotechnics field, particularly prevent for newly-built earth dam and for effecting a radical cure the geomembrane of disease danger earth dam
Ooze drainage system.
Background technology
Newly-built earth dam and the geomembrane anti-seepage drainage system for effecting a radical cure disease danger earth dam are traditionally used for, its principle is all base
The sloping core that geomembrane is provided with by dam body upstream face is considered as Utopian one stifled overall, the fluid-tight sloping core that intercepts water, and this is oblique
Wall separates Ku Shui with former dam body, so as to prevent reservoir water from penetrating into dam body, the saturation in dam significantly declines, the seepage flow behind dam
Amount is significantly reduced, and is entirely to play to act on by " stifled ".
Using such technology for newly-built earth dam and for effecting a radical cure the geomembrane anti-seepage drainage system of disease danger earth dam in soil
It is of course possible to use under the premise of the idealization of the complete water proof of work film, but because water is all-pervasive, in Practical Project this
Stifled sloping core is not definitely fluid-tight.When geomembrane part holes seeps water, such as without the drainage system seeped water under perfect film,
Prior art for newly-built earth dam and for effect a radical cure disease danger earth dam geomembrane anti-seepage drainage system using effect manage not enough
Think.
The content of the invention
To overcome the shortcomings of the existing Earth dam arti-seepage structure technology based on geotechnological membrane process, the present invention provides a kind of structure
More rationally, with the drainage system seeped water under perfect film, using effect is more preferably used for newly-built earth dam and for effecting a radical cure disease
The geomembrane anti-seepage drainage system of dangerous earth dam.
The technical scheme that is used to reach above-mentioned technical purpose of the present invention is：Geomembrane for effecting a radical cure disease danger earth dam is prevented
Ooze drainage system, including be laid on earth dam meet water it is domatic on soil cement sheath, the sand bedding course, the paving that are laid on soil cement sheath
The geomembrane that is located on sand bedding course, the geotextiles being laid on geomembrane, it is laid on overcoat on the film in geotextiles；Earth dam is met
The domatic upper spacing of water is provided with multiple tracks antiskid groove；Described antiskid groove doubles as rhone；Earth dam upstream face is provided with one along toe
Road concrete cutoff wall, the sidepiece in water stop body is provided with collecting-tank；Rhone is connected with collecting-tank top, under collecting-tank
Portion is communicated to outside the drainage prism of earth dam by horizontally disposed dam bottom drainpipe through earth dam bottom；Sand bedding course includes being laid on
Coarse sand bed course and the thin sand being laid on coarse sand bed course on soil cement sheath；Overcoat is included from top to bottom successively on film
The face sheath of setting, middle sheath, clayed soil layer.
Described soil cement sheath, sand bedding course, geomembrane, geotextiles be met water along earth dam it is domatic with each rhone
The curved surface laying that body is collectively formed；The setting of described rhone is distributed as every rising 3m heights of dam and sets one rhone；Institute
The rhone stated meets water the domatic gradient for being horizontally arranged with i=0.6% along earth dam, and the slope of each rhone is towards being provided with collection
The side in pond has a down dip, and being equipped with three between the draining groove bottom of the slope end of each rhone and the lower section of geomembrane connects
Head, the intermediate shunt mouthful of each three-way connection is plugged in corresponding rhone as slope side drainage joint, and the two of three-way connection are straight
Port is overall after being sequentially connected in series by correspondence straight tube to be used as slope side draining collecting pipe, the bottom nozzle of slope side draining collecting pipe with catchment
Pond top connects；The laying depth of described coarse sand bed course is 10cm；The laying depth of described thin sand is 10cm.
Described face sheath is placed rockfill bank protection layer；Described middle sheath is slabstone bed course.
Described face sheath is concrete slab revetment layer, and the specification of concrete slab revetment layer concrete slab used is 40 × 60
×6cm；Described middle sheath is sand-stone cushion, and the thickness of sand-stone cushion is 10cm.
The port of export of described dam bottom drainpipe is provided with water meter；The described earth dam domatic gradient that meets water is 1: 2-
2.25；The gradient of described face sheath upper surface is 1: 2-2.25.
For the geomembrane anti-seepage drainage system of newly-built earth dam, including be laid on sticky earth dam with inclined core meet water it is domatic on water
Soil sheath, the sand bedding course being laid on soil cement sheath, the geomembrane being laid on sand bedding course, the soil being laid on geomembrane
Work cloth, it is laid on overcoat on the film in geotextiles；The earth dam domatic upper spacing that meets water is provided with multiple tracks antiskid groove；Described antiskid
Groove doubles as rhone；Earth dam upstream face is provided with one concrete cutoff wall along toe, and the sidepiece in water stop body is provided with
Collecting-tank；Rhone is connected with collecting-tank top, and collecting-tank bottom passes through earth dam bottom by horizontally disposed dam bottom drainpipe
It is communicated to outside the drainage prism of earth dam；Sand bedding course includes the coarse sand bed course being laid on soil cement sheath and is laid on coarse sand bed course
On thin sand；Overcoat includes the face sheath, middle sheath, the clayed soil layer that set gradually from top to bottom on film；Described
Water stop spacing is provided with slope angle cut-off wall before water stop；The toe of described face sheath is arranged on slope angle cut-off wall, institute
The surface gradient of the face sheath stated is 1: 2-2.25；The surface gradient of described soil cement sheath is 1: 1.5.
Described soil cement sheath, sand bedding course, geomembrane, geotextiles be met water along earth dam it is domatic with each rhone
The curved surface laying that body is collectively formed；The setting of described rhone is distributed as every rising 3m heights of dam and sets one rhone；Institute
The rhone stated meets water the domatic gradient for being horizontally arranged with i=0.6% along earth dam, and the slope of each rhone is towards being provided with collection
The side in pond has a down dip, and being equipped with three between the draining groove bottom of the slope end of each rhone and the lower section of geomembrane connects
Head, the intermediate shunt mouthful of each three-way connection is plugged in corresponding rhone as slope side drainage joint, and the two of three-way connection are straight
Port is overall after being sequentially connected in series by correspondence straight tube to be used as slope side draining collecting pipe, the bottom nozzle of slope side draining collecting pipe with catchment
Pond top connects；The laying depth of described coarse sand bed course is 10cm；The laying depth of described thin sand is 10cm.
Described face sheath is placed rockfill bank protection layer；Described middle sheath is slabstone bed course.
Described face sheath is concrete slab revetment layer, and the specification of concrete slab revetment layer concrete slab used is 40 × 60
×6cm；Described middle sheath is sand-stone cushion, and the thickness of sand-stone cushion is 10cm.
The port of export of described dam bottom drainpipe is provided with water meter.
The beneficial effects of the invention are as follows：
For sick danger earth dam because described antiskid groove doubles as rhone；Earth dam upstream face is provided with one coagulation along toe
Native water stop, the sidepiece in water stop body is provided with collecting-tank；Rhone is connected with collecting-tank top, and collecting-tank bottom passes through
Horizontally disposed dam bottom drainpipe is communicated to outside the drainage prism of earth dam through earth dam bottom；Sand bedding course includes being laid on soil cement
Coarse sand bed course and the thin sand being laid on coarse sand bed course on sheath；Overcoat includes what is set gradually from top to bottom on film
Face sheath, middle sheath, clayed soil layer.
For newly-built earth dam except above-mentioned structure, it is provided with slope angle and cuts with water stop spacing before described water stop and ooze
Wall；The toe of described face sheath is arranged on slope angle cut-off wall, and the surface gradient of described face sheath is 1: 2-2.25；It is described
The surface gradient of soil cement sheath be 1: 1.5.
Therefore, when geomembrane 12 is constructed, junction is defective or use during there is breakage to cause storehouse water to penetrate into geomembrane
When under 12 film, the quick white-out of rhones at different levels 4 of cross fall to slope side draining collecting pipe 14, respective stages draining can be provided with
The rhone 4 that seeped water under the film that groove 4 is not drained also can be guided to next stage along sand bedding course 7 continues to be subject to white-out, absorbs water in a word
The drainage system that being seeped water under the film at any position below line all can vertically and horizontally be set rapidly is pooled to collecting-tank 2 and by dam
Bottom drainpipe 3 is expelled to the side of downstream slope one on dam, so ensures that the saturation of earth dam is low and puts down or even saturation is completely eliminated,
By the combination of " stifled " and " thin ", it is ensured that the safety of earth dam.Using effect is more preferable.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.Wherein：
Fig. 1 is the overall schematic for effecting a radical cure the geomembrane anti-seepage drainage system of disease danger earth dam；
Fig. 2 is for effecting a radical cure a generalized section for line of vision in the geomembrane anti-seepage drainage system of disease danger earth dam；
Fig. 3 is the close-up schematic view in Fig. 2；
Fig. 4 is the schematic diagram of the geomembrane anti-seepage drainage system for newly-built earth dam；
Fig. 5 is a partial cutaway schematic for line of vision in the geomembrane anti-seepage drainage system for newly-built earth dam；
Fig. 6 is that draining is confluxed schematic diagram under the film in the present invention；
Fig. 7 is that slope side draining in the present invention is confluxed the schematic diagram of tube portion.
Marker number in accompanying drawing is described as follows：Water stop 1, collecting-tank 2, dam bottom drainpipe 3, rhone 4, drainage prism
5th, water meter 6, sand bedding course 7, face sheath 8, middle sheath 9, clayed soil layer 10, geotextiles 11, geomembrane 12, slope side drainage joint
13rd, slope side draining collecting pipe 14, soil cement sheath 15, earth dam meets water domatic 16, slope angle cut-off wall 17
Specific embodiment
Embodiments of the invention 1, as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 6, Fig. 7, the geomembrane for effecting a radical cure disease danger earth dam is prevented
Ooze drainage system, including be laid on the soil cement sheath 15 that earth dam meets water on domatic 16, the sand being laid on soil cement sheath 15
Bed course 7, the geomembrane 12 being laid on sand bedding course 7, the geotextiles 11 being laid on geomembrane 12, it is laid in geotextiles 11
Overcoat on film；The earth dam spacing on domatic 16 that meets water is provided with multiple tracks antiskid groove；Described antiskid groove doubles as rhone 4；Earth dam
Upstream face is provided with one concrete cutoff wall 1 along toe, and the sidepiece in the body of water stop 1 is provided with collecting-tank 2；Rhone 4
Connected with the top of collecting-tank 2, the bottom of collecting-tank 2 is communicated to earth dam by horizontally disposed dam bottom drainpipe 3 through earth dam bottom
Drainage prism 5 outside；Sand bedding course 7 includes the coarse sand bed course being laid on soil cement sheath 15 and is laid on thin on coarse sand bed course
Sand bedding course；Overcoat includes the face sheath 8, middle sheath 9, the clayed soil layer 10 that set gradually from top to bottom on film.
Described soil cement sheath 15, sand bedding course 7, geomembrane 12, geotextiles 11 4 are to meet water domatic 16 along earth dam
The curved surface laying collectively formed with the body of each rhone 4；The setting of described rhone 4 is distributed as every rising 3m heights of dam and sets one
Road rhone 4；Described rhone 4 met water along earth dam domatic 16 the gradient for being horizontally arranged with i=0.6%, each rhone 4
Slope has a down dip towards the side for being provided with collecting-tank 2, the bottom surface of rhone 4 and the geomembrane 12 of the slope end of each rhone 4
Lower section between be equipped with three-way connection, the intermediate shunt mouthful of each three-way connection is plugged in corresponding row as slope side drainage joint 13
In tank 4, two straightthrough ports of three-way connection are overall after being sequentially connected in series by correspondence straight tube to be used as slope side draining collecting pipe 14, slope side
The bottom nozzle of draining collecting pipe 14 is connected with the top of collecting-tank 2；The laying depth of described coarse sand bed course is 10cm；Described is thin
The laying depth of sand bedding course is 10cm.
Described face sheath 8 is placed rockfill bank protection layer；Described middle sheath 9 is slabstone bed course.
Described face sheath 8 is concrete slab revetment layer, the specification of concrete slab revetment layer concrete slab used is 40 ×
60×6cm；Described middle sheath 9 is sand-stone cushion, and the thickness of sand-stone cushion is 10cm.
The port of export of described dam bottom drainpipe 3 is provided with water meter 6；Meet water domatic 16 gradient of described earth dam is 1: 2-
2.25；The gradient of the described upper surface of face sheath 8 is 1: 2-2.25.
Embodiments of the invention 2, as shown in Fig. 4, Fig. 5, Fig. 6, Fig. 7, for the geomembrane anti-seepage draining system of newly-built earth dam
System, including it is laid on the soil cement sheath 15 that sticky earth dam with inclined core meets water on domatic 16, the sand being laid on soil cement sheath 15
Bed course 7, the geomembrane 12 being laid on sand bedding course 7, the geotextiles 11 being laid on geomembrane 12, it is laid in geotextiles 11
Overcoat on film；The earth dam spacing on domatic 16 that meets water is provided with multiple tracks antiskid groove；Described antiskid groove doubles as rhone 4；Earth dam
Upstream face is provided with one concrete cutoff wall 1 along toe, and the sidepiece in the body of water stop 1 is provided with collecting-tank 2；Rhone 4
Connected with the top of collecting-tank 2, the bottom of collecting-tank 2 is communicated to earth dam by horizontally disposed dam bottom drainpipe 3 through earth dam bottom
Drainage prism 5 outside；Sand bedding course 7 includes the coarse sand bed course being laid on soil cement sheath 15 and is laid on thin on coarse sand bed course
Sand bedding course；Overcoat includes the face sheath 8, middle sheath 9, the clayed soil layer 10 that set gradually from top to bottom on film；Described cuts
The spacing of water stop 1 is provided with slope angle cut-off wall 17 before waterwall 1；The toe of described face sheath 8 is arranged on slope angle cut-off wall 17
On, the surface gradient of described face sheath 8 is 1: 2-2.25；The surface gradient of described soil cement sheath 15 is 1: 1.5.
Described soil cement sheath 15, sand bedding course 7, geomembrane 12, geotextiles 11 4 are to meet water domatic 16 along earth dam
The curved surface laying collectively formed with the body of each rhone 4；The setting of described rhone 4 is distributed as every rising 3m heights of dam and sets one
Road rhone 4；Described rhone 4 met water along earth dam domatic 16 the gradient for being horizontally arranged with i=0.6%, each rhone 4
Slope has a down dip towards the side for being provided with collecting-tank 2, the bottom surface of rhone 4 and the geomembrane 12 of the slope end of each rhone 4
Lower section between be equipped with three-way connection, the intermediate shunt mouthful of each three-way connection is plugged in corresponding row as slope side drainage joint 13
In tank 4, two straightthrough ports of three-way connection are overall after being sequentially connected in series by correspondence straight tube to be used as slope side draining collecting pipe 14, slope side
The bottom nozzle of draining collecting pipe 14 is connected with the top of collecting-tank 2；The laying depth of described coarse sand bed course is 10cm；Described is thin
The laying depth of sand bedding course is 10cm.
Described face sheath 8 is placed rockfill bank protection layer；Described middle sheath 9 is slabstone bed course.
Described face sheath 8 is concrete slab revetment layer, the specification of concrete slab revetment layer concrete slab used is 40 ×
60×6cm；Described middle sheath 9 is sand-stone cushion, and the thickness of sand-stone cushion is 10cm.
The port of export of described dam bottom drainpipe 3 is provided with water meter 6.
Supplementary notes：The newly-built earth dam of present invention design refers to Clay Microstructure dam, in the anti-seepage reinforcing work of newly-built earth dam
The impervious body structure of draining is to be laid in Clay Microstructure back in dam under antiseepage, film on its film of geomembrane 12 in journey.Conventional soil
Dam seepage control project, due to the 12 times vertical, horizontal drainage systems of setting complete set of geomembrane not in impervious body, causes to prevent
Still suffer from the different saturations of height after oozing completion of works, in earth dam, that is, water in reservoir still penetrates into dam body, so that
Seepage failure is produced, earth dam safety is threatened.It is this in earth dam geomembrane anti-seepage reinforcing engineering under antiskid groove and film vertically and horizontally
Rhone 4 be arranged together make to be formed respectively between each rhone 4 each independent antiseepage draining subsystem this allow for two grooves between
Once there is the anti-seepage effect that the seepage that film holes causes does not interfere with whole earth dam yet, and also can be timely in engineering management
It was found that, in time treatment.
Design of the invention is capable of achieving：There is breakage to cause storehouse during connecting defective or use when geomembrane 12 is constructed
Water is penetrated into when under the film of geomembrane 12, and the drainage system that can be vertically and horizontally set rapidly is pooled to collecting-tank 2 and by dam bottom
Drainpipe 3 is expelled to the side of downstream slope one on dam, it can be ensured that the saturation of earth dam is low flat or even saturation is completely eliminated, earth dam infiltration
The monitoring of line can set percolation line pipe and corollary apparatus to realize by the appropriate place of multiple in dam body.The present invention passes through
" stifled " and the combination of " thin ", it is ensured that the safety of earth dam.
Technology mechanism of the invention is both the guiding principle of radical cure disease danger earth dam, is also that the newly-built earth dam of prevention produces new disease danger storehouse
Guiding principle.Specification for dam bottom drainpipe 3 can use the drainpipe 3 of Φ 100, and the setting of dam bottom drainpipe 3 can during radical cure disease danger earth dam
Constructed with ZT-32 types non-excavation pipe-laying drilling rig, the setting of the dam bottom drainpipe 3 of newly-built earth dam then can be pre-buried using bank.
Claims (10)
1. be used for effect a radical cure disease danger earth dam geomembrane anti-seepage drainage system, including be laid on earth dam meet water it is domatic on soil cement protect
Layer, be laid on soil cement sheath sand bedding course, be laid on sand bedding course geomembrane, be laid on geomembrane geotextiles,
It is laid on overcoat on the film in geotextiles；The earth dam domatic upper spacing that meets water is provided with multiple tracks antiskid groove；It is characterized in that：It is described
Antiskid groove double as rhone；Earth dam upstream face is provided with one concrete cutoff wall along toe, the sidepiece in water stop body
It is provided with collecting-tank；Rhone is connected with collecting-tank top, and collecting-tank bottom is by horizontally disposed dam bottom drainpipe through soil
Dam bottom is communicated to outside the drainage prism of earth dam；Sand bedding course includes the coarse sand bed course being laid on soil cement sheath and is laid on thick
Thin sand on sand bedding course；Overcoat includes the face sheath, middle sheath, the clayed soil layer that set gradually from top to bottom on film.
2. it is according to claim 1 for effect a radical cure disease danger earth dam geomembrane anti-seepage drainage system, it is characterised in that：It is described
Soil cement sheath, sand bedding course, geomembrane, geotextiles met water along earth dam and domatic collectively formed with each draining cell body
Curved surface laying；The setting of described rhone is distributed as every rising 3m heights of dam and sets one rhone；Described rhone edge
Earth dam meets water the domatic gradient for being horizontally arranged with i=0.6%, and the slope of each rhone is towards being provided with the side of collecting-tank
Incline, three-way connection, each three-way connection are equipped between the draining groove bottom of the slope end of each rhone and the lower section of geomembrane
Intermediate shunt mouthful be plugged in corresponding rhone as slope side drainage joint, two straightthrough ports of three-way connection are straight by correspondence
Pipe is overall as slope side draining collecting pipe after being sequentially connected in series, and the bottom nozzle of slope side draining collecting pipe is connected with collecting-tank top；Institute
The laying depth of the coarse sand bed course stated is 10cm；The laying depth of described thin sand is 10cm.
3. it is according to claim 2 for effect a radical cure disease danger earth dam geomembrane anti-seepage drainage system, it is characterised in that：It is described
Face sheath be placed rockfill bank protection layer；Described middle sheath is slabstone bed course.
4. it is according to claim 2 for effect a radical cure disease danger earth dam geomembrane anti-seepage drainage system, it is characterised in that：It is described
Face sheath be concrete slab revetment layer, the specification of concrete slab revetment layer concrete slab used is 40 × 60 × 6cm；Described
Middle sheath is sand-stone cushion, and the thickness of sand-stone cushion is 10cm.
5. according to any one of Claims 1-4 for effect a radical cure disease danger earth dam geomembrane anti-seepage drainage system, its
It is characterised by：The port of export of described dam bottom drainpipe is provided with water meter；The described earth dam domatic gradient that meets water is 1: 2-
2.25；The gradient of described face sheath upper surface is 1: 2-2.25.
6. be used for newly-built earth dam geomembrane anti-seepage drainage system, including be laid on sticky earth dam with inclined core meet water it is domatic on cement
Native sheath, the sand bedding course being laid on soil cement sheath, the geomembrane being laid on sand bedding course, the geotechnique being laid on geomembrane
Cloth, it is laid on overcoat on the film in geotextiles；The earth dam domatic upper spacing that meets water is provided with multiple tracks antiskid groove；It is characterized in that：
Described antiskid groove doubles as rhone；Earth dam upstream face is provided with one concrete cutoff wall, in water stop body one along toe
Sidepiece is provided with collecting-tank；Rhone is connected with collecting-tank top, and collecting-tank bottom is worn by horizontally disposed dam bottom drainpipe
Earth dam bottom is crossed to be communicated to outside the drainage prism of earth dam；Sand bedding course includes the coarse sand bed course and the laying that are laid on soil cement sheath
Thin sand on coarse sand bed course；Overcoat includes the face sheath, middle sheath, the clayed soil that set gradually from top to bottom on film
Layer；Water stop spacing is provided with slope angle cut-off wall before described water stop；The toe of described face sheath is arranged on slope angle and cuts
Ooze on wall, the surface gradient of described face sheath is 1: 2-2.25；The surface gradient of described soil cement sheath is 1: 1.5.
7. the geomembrane anti-seepage drainage system for newly-built earth dam according to claim 6, it is characterised in that：Described water
Soil sheath, sand bedding course, geomembrane, geotextiles are met water the domatic curved surface collectively formed with each draining cell body along earth dam
Laying；The setting of described rhone is distributed as every rising 3m heights of dam and sets one rhone；Described rhone is along earth dam
Meet water the domatic gradient for being horizontally arranged with i=0.6%, and the slope of each rhone has a down dip towards the side for being provided with collecting-tank,
Three-way connection is equipped between the draining groove bottom of the slope end of each rhone and the lower section of geomembrane, in each three-way connection
Between by-pass port be plugged in corresponding rhone as slope side drainage joint, two straightthrough ports of three-way connection pass through correspondence straight tube according to
Overall as slope side draining collecting pipe after secondary concatenation, the bottom nozzle of slope side draining collecting pipe is connected with collecting-tank top；Described
The laying depth of coarse sand bed course is 10cm；The laying depth of described thin sand is 10cm.
8. the geomembrane anti-seepage drainage system for newly-built earth dam according to claim 7, it is characterised in that：Described face
Sheath is placed rockfill bank protection layer；Described middle sheath is slabstone bed course.
9. the geomembrane anti-seepage drainage system for newly-built earth dam according to claim 7, it is characterised in that：Described face
Sheath is concrete slab revetment layer, and the specification of concrete slab revetment layer concrete slab used is 40 × 60 × 6cm；Described middle shield
Layer is sand-stone cushion, and the thickness of sand-stone cushion is 10cm.
10. the geomembrane anti-seepage drainage system for newly-built earth dam according to any one of claim 6 to 9, it is special
Levy and be：The port of export of described dam bottom drainpipe is provided with water meter.
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| CN107653842A (en) * | 2017-08-14 | 2018-02-02 | 合肥卓立雅工程材料科技有限公司 | A kind of geomembrane reservoir sloping core Seepage method |
| CN109024487A (en) * | 2018-09-04 | 2018-12-18 | 中交第二公路勘察设计研究院有限公司 | A kind of guard system and its construction method that cold area's reservoir stability antiseepage is freeze proof |
| CN109537531A (en) * | 2019-01-24 | 2019-03-29 | 河海大学 | A kind of dam facing geomembrane anti-seepage rock-fill dams, construction method and defect positioning method |
| CN112252294A (en) * | 2020-11-25 | 2021-01-22 | 青岛九天智慧农业集团有限公司 | Seepage-proofing treatment method for different land block heights in saline-alkali land paddy field |
| CN114687323A (en) * | 2022-05-18 | 2022-07-01 | 甘肃第六建设集团股份有限公司 | Seepage-prevention construction method for semi-reservoir seepage-prevention high-fill silty loam homogeneous dam |
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| CN114687323A (en) * | 2022-05-18 | 2022-07-01 | 甘肃第六建设集团股份有限公司 | Seepage-prevention construction method for semi-reservoir seepage-prevention high-fill silty loam homogeneous dam |
| CN114687323B (en) * | 2022-05-18 | 2023-03-28 | 甘肃第六建设集团股份有限公司 | Seepage-proof construction method for semi-reservoir seepage-proof high-fill silty loam homogeneous dam |
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