CN212200482U - Gate dam foundation treatment structure on deep overburden - Google Patents
Gate dam foundation treatment structure on deep overburden Download PDFInfo
- Publication number
- CN212200482U CN212200482U CN202020569973.8U CN202020569973U CN212200482U CN 212200482 U CN212200482 U CN 212200482U CN 202020569973 U CN202020569973 U CN 202020569973U CN 212200482 U CN212200482 U CN 212200482U
- Authority
- CN
- China
- Prior art keywords
- covering layer
- engineering
- overburden
- gate dam
- foundation treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004575 stone Substances 0.000 claims abstract description 36
- 239000004576 sand Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 9
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 239000011435 rock Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 239000011439 engineered stone Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Landscapes
- Foundations (AREA)
Abstract
The utility model provides a gate dam foundation treatment structure on deep overburden has the lower part overburden in the concave middle part top of overburden basement rock, and the lower part overburden has engineering building stones, and engineering building stones are covered with gate dam concrete bottom plate, have the high pressure to spout the stake soon under engineering building stones and bury in the lower part overburden. The utility model effectively solves the foundation treatment design and construction problems of building the gate dam on the deep covering layer by digging part of the covering layer and backfilling the engineering stone and adding the high-pressure jet grouting pile, can improve the uniformity of the foundation, enhance the integrity, improve the bearing capacity of the foundation and reduce the compression deformation of the foundation; simple structure, small engineering quantity, small investment and high construction efficiency.
Description
Technical Field
The utility model relates to a floodgate dam foundation treatment structure on deep overburden belongs to hydraulic and hydroelectric engineering technical field.
Background
In the hydraulic and hydroelectric engineering construction process, part of engineering can involve the condition that the gate dam foundation is on the deep overburden, and the common riverbed overburden material composition usually has: gravel layers, sand layers, clay layers, silt layers, crushed stone layers, block stone layers, various mixed structures and the like, the covering layer is as deep as over 100m, and the earth layers such as silt, sand gravel and the like can be subjected to earthquake liquefaction. At present, a plurality of common foundation treatment methods exist in hydraulic and hydroelectric engineering, the selected treatment methods are different according to different treatment requirements, and the basic functions and the application ranges of the methods are also different. The existing basic processing method of the covering layer mainly comprises the following steps: full excavation, dynamic compaction, vibro-replacement gravel pile, high-pressure jet grouting, cement mixing, grouting, bedding, and the like.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a brake dam foundation treatment structure on deep overburden, this brake dam foundation treatment structure on deep overburden utility model discloses a dig out partial overburden backfill engineering building stones and add high pressure jet grouting pile's method can better solve design, the difficult problem of construction that brake dam foundation treatment was gone up on deep overburden.
The utility model discloses a following technical scheme can realize.
The utility model provides a gate dam foundation treatment structure on deep overburden, it covers to have the lower part overburden above the concave middle part of overburden basement rock, it has engineering building stones to cover on the overburden of lower part, engineering building stones are covered with gate dam concrete bottom plate, have high pressure jet grouting pile to bury in the overburden of lower part under engineering building stones; and an upper covering layer is covered at the side edge of the covering layer bedrock, and the upper covering layer is positioned on the concrete bottom plate of the dam and the side surface of the engineering stone.
The upper covering layer is vertical relative to the positions of the concrete bottom plate of the dam and the engineering stones.
The engineered stone is located at an internal boundary of the overburden between the upper overburden and the lower overburden.
And the concrete bottom plate of the gate dam is lower than the original topographic line.
The engineering stone is sand gravel.
The bottom surface of the engineering stone is a horizontal plane.
The high-pressure jet grouting piles are horizontally and uniformly distributed.
The beneficial effects of the utility model reside in that: the foundation treatment design and construction problems of building a gate dam on a deep covering layer are effectively solved by digging out part of the covering layer and backfilling engineering stones and adding high-pressure jet grouting piles, the uniformity of the foundation can be improved, the integrity is enhanced, the bearing capacity of the foundation is improved, and the compression deformation of the foundation is reduced; simple structure, small engineering quantity, small investment and high construction efficiency.
Drawings
FIG. 1 is an upstream elevation view of the present invention;
fig. 2 is a longitudinal sectional view of fig. 1.
In the figure: 1-original topographic line, 2-bedrock covering layer boundary, 3-covering layer internal boundary, 4-upper covering layer, 5-lower covering layer, 6-dam concrete bottom plate, 7-engineering stone and 8-high-pressure jet grouting pile.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1 and 2, in the foundation treatment structure of the upper gate dam with the deep covering layer, a lower covering layer 5 covers the concave middle part of the covering layer bedrock, engineering stones 7 cover the lower covering layer 5, a concrete bottom plate 6 of the gate dam covers the engineering stones 7, and high-pressure jet grouting piles 8 are buried in the lower covering layer 5 below the engineering stones 7; an upper covering layer 4 is covered at the side edge position of the covering layer bedrock, and the upper covering layer 4 is positioned at the side surfaces of a concrete bottom plate 6 of the gate dam and engineering stones 7.
The upper cladding 4 is in a vertical plane with respect to the position of the concrete bottom plate 6 of the dam and the engineering stone 7.
The engineered stone 7 is located at the internal boundary 3 between the upper and lower cladding layers 4, 5.
The concrete bottom plate 6 of the gate dam is lower than the original terrain line 1.
As a preferred solution for the engineering stones 7, the engineering stones 7 are sand gravel.
Further, the bottom surface of the engineering stone 7 is a horizontal surface.
The high-pressure jet grouting piles 8 are uniformly distributed along the horizontal direction.
The utility model discloses take following step to be under construction:
firstly, pore forming: carrying out hole forming construction on the high-pressure jet grouting pile 8 along the original topographic line 1, and carrying out high-pressure jet grouting treatment on the part below the backfill surface height of the formed holes, wherein the backfill surface height is the bottom position of the engineering stone 7;
excavating: excavating an upper covering layer 4 in the original terrain to reach the backfill surface elevation;
thirdly, backfilling: backfilling the engineering stone 7 from the height of a backfilling surface, and carrying out layered rolling during backfilling;
paving: and paving a dam concrete bottom plate 6 on the engineering stone 7.
During construction, the gate dam is arranged on a deep covering layer foundation, the covering layer on the upper portion of the gate dam foundation is loose and may have a liquefied soil layer, and the integrity, uniformity and bearing capacity of the covering layer on the lower portion do not meet design requirements and need further treatment.
The utility model discloses a leading principle lies in, adopts sand gravel or engineering excavation building stones to backfill the replacement after digging out the loose overburden in upper portion and the soil layer that probably liquefies bottom the floodgate dam, and the overburden to the not designing requirement that closes of lower part adopts high pressure jet grouting pile mode to consolidate and handles.
The utility model discloses the condition of building the floodgate dam on deep overburden mainly is applicable to.
Claims (7)
1. The utility model provides a gate dam foundation processing structure on deep overburden which characterized in that: a lower covering layer (5) is covered above the concave middle part of the covering layer bedrock, engineering stones (7) are covered on the lower covering layer (5), a gate concrete bottom plate (6) is covered on the engineering stones (7), and high-pressure jet grouting piles (8) are arranged below the engineering stones (7) and buried in the lower covering layer (5); an upper covering layer (4) is covered at the side edge of the covering layer bedrock, and the upper covering layer (4) is positioned on the side surfaces of the concrete bottom plate (6) of the dam and the engineering stone (7).
2. The deep overburden top gate dam foundation treatment structure as recited in claim 1, wherein: the upper covering layer (4) is vertical relative to the positions of the dam concrete bottom plate (6) and the engineering stone (7).
3. The deep overburden top gate dam foundation treatment structure as recited in claim 1, wherein: the engineering stones (7) are located at the position of the internal boundary (3) between the upper covering layer (4) and the lower covering layer (5).
4. The deep overburden top gate dam foundation treatment structure as recited in claim 1, wherein: the concrete bottom plate (6) of the gate dam is lower than the original terrain line (1).
5. The deep overburden top gate dam foundation treatment structure as recited in claim 1, wherein: the engineering stone (7) is sand gravel.
6. The deep overburden top gate dam foundation treatment structure as recited in claim 1, wherein: the bottom surface of the engineering stone (7) is a horizontal plane.
7. The deep overburden top gate dam foundation treatment structure as recited in claim 1, wherein: the high-pressure jet grouting piles (8) are uniformly distributed along the horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020569973.8U CN212200482U (en) | 2020-04-16 | 2020-04-16 | Gate dam foundation treatment structure on deep overburden |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020569973.8U CN212200482U (en) | 2020-04-16 | 2020-04-16 | Gate dam foundation treatment structure on deep overburden |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212200482U true CN212200482U (en) | 2020-12-22 |
Family
ID=73834120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020569973.8U Active CN212200482U (en) | 2020-04-16 | 2020-04-16 | Gate dam foundation treatment structure on deep overburden |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212200482U (en) |
-
2020
- 2020-04-16 CN CN202020569973.8U patent/CN212200482U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103758113B (en) | A kind of grid encloses the anti-liquefied foundation reinforcement means of hoop | |
| CN108166518B (en) | Structure for synchronous treatment of underground pipeline foundation pit and soft soil foundation and reinforcing method thereof | |
| CN108560542B (en) | Waste tire coated building slag bidirectional reinforcement and construction method thereof | |
| CN101265701A (en) | Soft soil foundation reinforcing means | |
| CN107419630A (en) | A kind of the soft soil foundation high-filled embankment and construction method of effectively control settlement after construction | |
| CN206902488U (en) | A kind of soft soil foundation high-filled embankment of effectively control settlement after construction | |
| CN114109394B (en) | Method for determining pile length of tunnel shallow-buried weak surrounding rock high-pressure jet grouting pile method ground surface reinforcement | |
| CN111851505A (en) | Construction method and structure of pouring type impervious core earth-rock dam | |
| CN105804007A (en) | Reinforced soil bank wall structure based on beach soft foundation | |
| CN116377780A (en) | Mountain highway high-fill roadbed filling construction method | |
| CN107881987A (en) | Deep covering layer top panel Rockfill Dam based moisture barrier structure | |
| CN215669631U (en) | Deep overburden foundation structure | |
| CN106884427A (en) | Immersed tube tunnel and immersed tube tunnel changeover portion soft soil foundation reinforcing method under water | |
| CN108824412B (en) | Soft foundation treatment method based on gabion wall reinforced soil and dynamic compaction combination | |
| CN207537975U (en) | Deep covering layer top panel Rockfill Dam based moisture barrier structure | |
| CN213143069U (en) | Pouring type impervious core earth-rock dam structure | |
| CN110804994B (en) | Reservoir dam construction method | |
| CN212200482U (en) | Gate dam foundation treatment structure on deep overburden | |
| CN1121973A (en) | Double compounded crushed stone pile and concrete cast-in-place pile foundation and its construction method | |
| CN115450236A (en) | Cofferdam anti-seepage structure and construction method thereof | |
| CN113047236A (en) | Deep soft soil treatment method for earth-rock dam foundation and earth-rock dam | |
| CN114164726A (en) | Local deep excavation backfill structural roadbed and rapid construction method | |
| CN106337409A (en) | Method for treating peat soil foundation through preloading in combination with salt piles | |
| CN206829116U (en) | A kind of reinforced soft soil ground structure of improvement | |
| CN219840108U (en) | Cofferdam structure using clay and membrane bag concrete to jointly prevent seepage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |