CN212427014U - Interlaminar dislocation area prevention of seepage processing structure - Google Patents
Interlaminar dislocation area prevention of seepage processing structure Download PDFInfo
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- CN212427014U CN212427014U CN201922425290.5U CN201922425290U CN212427014U CN 212427014 U CN212427014 U CN 212427014U CN 201922425290 U CN201922425290 U CN 201922425290U CN 212427014 U CN212427014 U CN 212427014U
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The utility model discloses an interlaminar dislocation area prevention of seepage processing structure, its structure includes the prevention of seepage body, the prevention of seepage body is including cutting seepage hole, prevention of seepage grout curtain and overlap joint grout curtain, cut the seepage hole along the excavation of interlaminar dislocation area and arrange, arrange prevention of seepage grout curtain and overlap joint grout curtain respectively in interlaminar dislocation area top and below, the prevention of seepage grout curtain is connected and the hole is cut to overlap joint grout curtain both ends. The utility model discloses a arrange along the dislocation area between layer at conventional prevention of seepage grout curtain upper reaches side and cut infiltration hole and overlap joint curtain, the dislocation area between layer is avoided completely to the grout curtain, rather than being less than 1m with its nearest distance, the three combination forms complete sealed, the safe and reliable's prevention of seepage body of dislocation area between layer completely, can improve the prevention of seepage ability and the infiltration stability in dislocation area between the layer, prevents to form and concentrates the seepage passageway, reduces the adverse effect of groundwater to the underground cavern.
Description
Technical Field
The utility model belongs to the technical field of hydraulic and hydroelectric engineering, especially, relate to an interlaminar dislocation area prevention of seepage handles structure.
Background
Most of conventional hydropower station underground powerhouses adopt a head development mode, underground powerhouse cavern groups are located in mountains below normal water storage level of reservoir areas, and the problem of rock mass and underground water seepage cannot be ignored.
The interlaminar dislocation belt is used as a particle material mixed with soft substances of rock fragments remained after dislocation, generally has the characteristics of loose structure, soft property, easy softening when meeting water and the like, has strong ductility, can usually run through the whole seepage-proofing line, has strong water permeability, reduces the allowable permeability, is a main seepage passage of an underground cavern group, and is vital to the safety of a seepage-proofing system and the normal operation of an underground factory building.
The seepage problem of the interlaminar dislocation zone in the engineering is generally treated in the following two ways: the first method is that an anti-seepage curtain is adopted to penetrate through the interlaminar dislocation belt, and the interlaminar dislocation belt is prevented from seepage by curtain grouting; the second method is to arrange a cut-off hole to partially replace the interlaminar dislocation band and then use a short curtain to be lapped with a main curtain. Because the composition of particles of the interlaminar dislocation zone is complex and is influenced by internal fillers, the diffusion capacity of grouting slurry is limited, internal pores of the dislocation zone cannot be filled with conventional grouting materials, the first treatment mode is difficult to enable the dislocation zone part to be completely condensed into a whole, a leakage channel cannot be blocked, and the seepage-proofing effect is possibly poor; the seepage interception hole can block a communicated seepage channel at the position of the interbedded dislocation band, but a short curtain connected with the main curtain is still positioned on the interbedded dislocation band and is a weak part of the seepage-proof body, and if the grouting effect at the position is not good, a seepage channel can still be generated at the connecting position of the curtain behind the seepage interception hole.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at overcoming the problem that the above-mentioned among the prior art exists, provide complete sealing, safe and reliable, improve the prevention of seepage ability and the infiltration stability in dislocation area between the layer, prevent to form and concentrate the seepage passageway, reduce an interlayer dislocation area prevention of seepage processing structure of groundwater to the adverse effect of underground cavern.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses an interlaminar dislocation area prevention of seepage processing structure, including the prevention of seepage body, the prevention of seepage body is including cutting seepage hole, prevention of seepage grout curtain and overlap joint grout curtain, cut the seepage hole and arrange along the excavation of interlaminar dislocation area, arrange prevention of seepage grout curtain and overlap joint grout curtain respectively in interlaminar dislocation area top and below, the prevention of seepage grout curtain is connected and the hole is cut to overlap joint grout curtain both ends.
Preferably, the intercepting hole is disposed at an upstream side of the impervious grouting curtain.
Preferably, the anti-seepage grouting curtain comprises an upper anti-seepage grouting curtain and a lower anti-seepage grouting curtain, the upper anti-seepage grouting curtain is positioned above the interlaminar dislocation band, the lower anti-seepage grouting curtain is positioned below the interlaminar dislocation band, and the lower end of the upper anti-seepage grouting curtain and the upper end of the lower anti-seepage grouting curtain are respectively lapped and lapped with the grouting curtains.
Preferably, the minimum distance between the seepage-proofing grouting curtain and the seepage-proofing hole is more than 5 m.
Preferably, the seepage intercepting hole comprises a first-stage lining layer and second-stage backfilled concrete, the first-stage lining layer covers the inner wall of the seepage intercepting hole, and the second-stage backfilled concrete fills the inner space of the seepage intercepting hole.
Preferably, the lap joint grouting curtain comprises a first lap joint grouting curtain hole, a second lap joint grouting curtain hole, a third lap joint grouting curtain hole and a fourth lap joint grouting curtain hole, the first lap joint grouting curtain hole and the second lap joint grouting curtain hole are positioned above the interlaminar dislocation band, and the third lap joint grouting curtain hole and the fourth lap joint grouting curtain hole are positioned below the interlaminar dislocation band; one end of each of the first, second, third and fourth lap joint grouting curtain holes is provided with a hole on a first lining layer at one side of the seepage-cut hole close to the seepage-proof grouting curtain, and the other end of each of the first, second, third and fourth lap joint grouting curtain holes is lapped with the seepage-proof grouting curtain.
Preferably, the tapping position of the first lap grouting curtain hole is located at the arch line of the cut-off hole, the tapping position of the second lap grouting curtain hole is located a distance D2 below the tapping position of the first lap grouting curtain hole, the tapping of the fourth lap grouting curtain hole is located at the bottom corner of the sidewall of the cut-off hole, the tapping position of the third lap grouting curtain hole is located a distance D2 above the tapping position of the fourth lap grouting curtain hole, the tapping position of the second lap grouting curtain hole is located a distance D1 above the interbedded dislocation band, the tapping positions of the third lap grouting curtain holes are respectively located a distance D1 below the interbedded dislocation band 1, the distance D2 is 1m, and the distance D1 is greater than or equal to 1 m.
Preferably, the distance from the overlapped position of the second overlapped grouting curtain hole and the impervious grouting curtain to the interlaminar dislocation zone along the extending direction of the impervious grouting curtain is D4; the distance from the lap joint position of the first lap joint grouting curtain hole and the seepage-proofing grouting curtain to the interlayer dislocation belt along the extension direction of the seepage-proofing grouting curtain is D4+ D3; the distance from the lap joint position of the third lap joint grouting curtain hole and the impervious grouting curtain to the interlaminar dislocation belt along the extension direction of the impervious grouting curtain is D4; the distance from the lap joint position of the fourth lap joint grouting curtain hole and the impervious grouting curtain to the interlaminar dislocation belt along the extension direction of the impervious grouting curtain is D4+ D3; the D3 is 2m, and the D4 is greater than or equal to 2 m.
The utility model has the advantages that: the seepage-stopping hole and the lapping curtain are arranged on the upstream side of the conventional seepage-proofing grouting curtain along the interbedded dislocation band, the grouting curtain completely avoids the interbedded dislocation band, the distance between the grouting curtain and the interbedded dislocation band is not less than 1m, the grouting curtain, the interbedded dislocation band and the lapping curtain are combined to form a complete closed, safe and reliable seepage-proofing body which completely avoids the interbedded dislocation band, the seepage-proofing capability and the seepage stability of the interbedded dislocation band can be improved, a centralized seepage channel is prevented from being formed, and the adverse effect of underground water on an.
Drawings
Fig. 1 is a schematic cross-sectional view of an interlayer dislocation belt anti-seepage processing structure of the present invention in a use state.
Fig. 2 is a schematic view of the seepage intercepting hole of the interlaminar dislocation band seepage-proofing treatment structure of the utility model.
In the figure:
1. an interlaminar dislocation zone; 2. grouting a gallery; 3. intercepting a seepage hole; 301. a first lining layer; 302. backfilling concrete in the second stage; 4. an impermeable grouting curtain; 401. an upper impervious grouting curtain; 402. a lower impermeable grouting curtain; 5. lapping a grouting curtain; 501. a first lap grouting curtain hole; 502. a second lap grouting curtain hole; 503. a third lap joint grouting curtain hole; 504. and fourth lapping grouting curtain holes.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 and 2, the utility model discloses an interlaminar dislocation area prevention of seepage processing structure, including the impervious body, the impervious body is including cutting seepage hole 3, prevention of seepage grout curtain 4 and overlap joint grout curtain 5, cut seepage hole 3 along 1 excavation of interlaminar dislocation area and arrange, arrange prevention of seepage grout curtain 4 and overlap joint grout curtain 5 respectively in 1 top of interlaminar dislocation area and below, overlap joint grout curtain 5 both ends are connected prevention of seepage grout curtain 4 and are cut seepage hole 3. The intercepting hole 3 is arranged at the upstream side of the impervious grouting curtain 4.
The seepage-proofing grouting curtain 4 comprises an upper seepage-proofing grouting curtain 401 and a lower seepage-proofing grouting curtain 402, wherein the upper seepage-proofing grouting curtain 401 is positioned above the interlaminar dislocation band 1, the lower seepage-proofing grouting curtain 402 is positioned below the interlaminar dislocation band 1, and the lower end of the upper seepage-proofing grouting curtain 401 and the upper end of the lower seepage-proofing grouting curtain 402 are respectively lapped and lapped with a grouting curtain 5.
The minimum distance between the seepage-proofing grouting curtain 4 and the seepage-proofing hole 3 is more than 5 m.
Cut and ooze hole 3 and include first stage lining layer 301 and second stage backfill concrete 302, first stage lining layer 301 covers and cuts and ooze 3 inner walls in hole, second stage backfill concrete 302 fills and cuts and ooze 3 inner spaces in hole.
The lap joint grouting curtain 5 comprises a first lap joint grouting curtain hole 501, a second lap joint grouting curtain hole 502, a third lap joint grouting curtain hole 503 and a fourth lap joint grouting curtain hole 504, the first lap joint grouting curtain hole 501 and the second lap joint grouting curtain hole 502 are positioned above the interlaminar dislocation band 1, and the third lap joint grouting curtain hole 503 and the fourth lap joint grouting curtain hole 504 are positioned below the interlaminar dislocation band 1; one end of each of the first, second, third and fourth lap grout curtain holes 501, 502, 503 and 504 is perforated on the first lining layer 301 of the seepage-cut hole 3 near one side of the impervious grout curtain 4, and the other end is lapped with the impervious grout curtain 4.
The tapping position of the first lap-joint grouting curtain hole 501 is located at the arch line of the cut-off hole 3, the tapping position of the second lap-joint grouting curtain hole 502 is located at a distance D2 below the tapping position of the first lap-joint grouting curtain hole 501, the tapping of the fourth lap-joint grouting curtain hole 504 is located at the bottom corner of the sidewall of the cut-off hole 3, the tapping position of the third lap-joint grouting curtain hole 503 is located at a distance D2 above the tapping position of the fourth lap-joint grouting curtain hole 504, the tapping position of the second lap-joint grouting curtain hole 502 is located at a distance D1 above the interbedding slip band 1, the tapping position of the third lap-joint grouting curtain hole 503 is located at a distance D1 below the interbedding slip band 1, the distance D2 is 1m, and the distance D1 is greater than or equal to 1 m.
The distance from the lap joint position of the second lap joint grouting curtain hole 502 and the impervious grouting curtain 4 to the interlaminar dislocation belt 1 along the extension direction of the impervious grouting curtain 4 is D4; the distance from the lapping position of the first lapping grouting curtain hole 501 and the impervious grouting curtain 4 to the interlaminar dislocation belt 1 along the extending direction of the impervious grouting curtain 4 is D4+ D3; the distance from the lap joint position of the third lap joint grouting curtain hole 503 and the impervious grouting curtain 4 to the interlaminar dislocation zone 1 along the extension direction of the impervious grouting curtain 4 is D4; the distance from the lapping position of the fourth lapping grouting curtain hole 504 and the impervious grouting curtain 4 to the interlaminar dislocation band 1 along the extending direction of the impervious grouting curtain 4 is D4+ D3; the D3 is 2m, and the D4 is greater than or equal to 2 m.
The first-stage lining layer 301 of the narrow and high seepage-stopping hole 3 is lined by reinforced concrete, and the thickness is not less than 50 cm. The hole periphery consolidation grouting and lap joint grouting curtain 5 is blocked in concrete, and the second-stage backfilled concrete 302 is blocked by micro-expansion concrete. The pitch and depth of holes of the anti-seepage grouting curtain 4 are constructed according to the conventional engineering technology, but the grouting pressure is increased and the grouting time is prolonged in the hole section in the influence range of the lapping grouting curtain 5.
After the excavation and supporting of the seepage intercepting hole 3 are completed, a first-stage lining layer 301 and a second-stage backfilling concrete 302 are timely performed, after the excavation and supporting are completed, the hole periphery consolidation grouting construction is performed, then lapping curtain grouting 5 is performed, after the lapping curtain grouting 5 construction is completed and the construction is checked to be qualified, the second-stage backfilling concrete 302 of the seepage intercepting hole 3 is plugged, and finally, the seepage-proofing grouting curtain 4 construction is performed through the grouting gallery 2, so that a complete and closed seepage-proofing body which completely avoids the interlaminar dislocation zone 1 is formed.
The utility model discloses an arrange along the dislocation area between layer at conventional prevention of seepage grout curtain upper reaches side and cut hole and overlap joint curtain, the dislocation area between layer is avoided completely to the grout curtain, rather than being less than 1m with its nearest distance, the three combination forms complete closed, the safe and reliable's prevention of seepage body of dislocation area between layer completely, can improve the prevention of seepage ability and the infiltration stability in dislocation area between layer, prevents to form and concentrates the seepage passageway, reduces the adverse effect of groundwater to the underground cavern.
Claims (8)
1. The utility model provides an interlaminar dislocation area prevention of seepage handles structure, characterized by, includes the prevention of seepage body, the prevention of seepage body is including cutting seepage hole (3), prevention of seepage grout curtain (4) and overlap joint grout curtain (5), cut seepage hole (3) and arrange along interlaminar dislocation area (1) excavation, arrange prevention of seepage grout curtain (4) and overlap joint grout curtain (5) respectively in interlaminar dislocation area (1) top and below, and prevention of seepage grout curtain (4) and cut seepage hole (3) are connected at overlap joint grout curtain (5) both ends.
2. An interlaminar dislocation band barrier treatment structure as claimed in claim 1, characterized in that said intercepting cavities (3) are arranged on the upstream side of the curtain of barrier grouting (4).
3. An interlaminar dislocation band seepage prevention treatment structure as claimed in claim 1, wherein said seepage prevention grouting curtain (4) comprises an upper seepage prevention grouting curtain (401) and a lower seepage prevention grouting curtain (402), said upper seepage prevention grouting curtain (401) is located above the interlaminar dislocation band (1), said lower seepage prevention grouting curtain (402) is located below the interlaminar dislocation band (1), and the lower end of the upper seepage prevention grouting curtain (401) and the upper end of the lower seepage prevention grouting curtain (402) are respectively lap-lapped and lapped with the grouting curtain (5).
4. An interlaminar dislocation band barrier treatment structure as claimed in claim 1, characterized in that the minimum distance between said barrier grouting curtain (4) and the intercepting hole (3) is greater than 5 m.
5. An interlaminar dislocation belt seepage-proofing treatment structure according to claim 1, characterized in that the seepage-stopping hole (3) comprises a first-stage lining layer (301) and second-stage backfilling concrete (302), wherein the first-stage lining layer (301) covers the inner wall of the seepage-stopping hole (3), and the second-stage backfilling concrete (302) fills the inner space of the seepage-stopping hole (3).
6. The interlaminar dislocation band seepage-proofing treatment structure according to claim 1, wherein the lap-joint grouting curtain (5) comprises a first lap-joint grouting curtain hole (501), a second lap-joint grouting curtain hole (502), a third lap-joint grouting curtain hole (503) and a fourth lap-joint grouting curtain hole (504), the first lap-joint grouting curtain hole (501) and the second lap-joint grouting curtain hole (502) are positioned above the interlaminar dislocation band (1), and the third lap-joint grouting curtain hole (503) and the fourth lap-joint grouting curtain hole (504) are positioned below the interlaminar dislocation band (1); one end of each of the first lap joint grouting curtain hole (501), the second lap joint grouting curtain hole (502), the third lap joint grouting curtain hole (503) and the fourth lap joint grouting curtain hole (504) is provided with a hole on a first-stage lining layer (301) at one side of the seepage-stopping hole (3) close to the seepage-proof grouting curtain (4), and the other end of each of the first lap joint grouting curtain holes, the second lap joint grouting curtain hole (502), the third lap joint grouting curtain hole (503) and the fourth lap joint grouting curtain hole (504) is provided with.
7. An interlaminar dislocation tape anti-seepage processing structure as claimed in claim 6, wherein the tapping position of the first lap-grouting curtain hole (501) is located at the arch line of the intercepting hole (3), the tapping position of the second lap-grouting curtain hole (502) is located at a distance D2 below the tapping position of the first lap-grouting curtain hole (501), the tapping of the fourth lap-grouting curtain hole (504) is located at the bottom corner of the sidewall of the intercepting hole (3), the tapping position of the third lap-grouting curtain hole (503) is located at a distance D2 above the tapping position of the fourth lap-grouting curtain hole (504), the tapping position of the second lap-grouting curtain hole (502) is located at a distance D1 above the interlaminar dislocation tape (1), the tapping position of the third lap-grouting curtain hole (503) is respectively located at a distance D1 below the interlaminar dislocation tape (1), and the distance D2 is 1m, the distance D1 is greater than or equal to 1 m.
8. An interlaminar dislocation tape impermeable handling structure as claimed in claim 6, characterized in that the lapping position of said second lapping grouting curtain hole (502) and impermeable grouting curtain (4) is D4 from the extending direction of the impermeable grouting curtain (4) to the interlaminar dislocation tape (1); the distance from the lap joint position of the first lap joint grouting curtain hole (501) and the seepage-proof grouting curtain (4) to the interlayer dislocation belt (1) along the extension direction of the seepage-proof grouting curtain (4) is D4+ D3; the distance from the lap joint position of the third lap joint grouting curtain hole (503) and the impervious grouting curtain (4) to the interlaminar dislocation belt (1) along the extension direction of the impervious grouting curtain (4) is D4; the distance from the lap joint position of the fourth lap joint grouting curtain hole (504) and the seepage-proofing grouting curtain (4) to the interlaminar dislocation belt (1) along the extension direction of the seepage-proofing grouting curtain (4) is D4+ D3; the D3 is 2m, and the D4 is greater than or equal to 2 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922425290.5U CN212427014U (en) | 2019-12-29 | 2019-12-29 | Interlaminar dislocation area prevention of seepage processing structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922425290.5U CN212427014U (en) | 2019-12-29 | 2019-12-29 | Interlaminar dislocation area prevention of seepage processing structure |
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| CN212427014U true CN212427014U (en) | 2021-01-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965533A (en) * | 2019-12-29 | 2020-04-07 | 中国电建集团华东勘测设计研究院有限公司 | Interlayer dislocation zone anti-seepage treatment structure and construction method |
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2019
- 2019-12-29 CN CN201922425290.5U patent/CN212427014U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965533A (en) * | 2019-12-29 | 2020-04-07 | 中国电建集团华东勘测设计研究院有限公司 | Interlayer dislocation zone anti-seepage treatment structure and construction method |
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