CN204738280U - Power station tailrace overburden foundation structure - Google Patents
Power station tailrace overburden foundation structure Download PDFInfo
- Publication number
- CN204738280U CN204738280U CN201520336932.3U CN201520336932U CN204738280U CN 204738280 U CN204738280 U CN 204738280U CN 201520336932 U CN201520336932 U CN 201520336932U CN 204738280 U CN204738280 U CN 204738280U
- Authority
- CN
- China
- Prior art keywords
- tailrace
- overburden
- covering layer
- backfill
- foundation structure
- 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
Classifications
-
- 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
Landscapes
- Revetment (AREA)
Abstract
The utility model discloses a power station tailrace overburden foundation structure, including overburden main part and tailrace concrete floor, be provided with the backfill bed of material between overburden main part and the tailrace concrete floor, backfill the bed of material for adopting the backfill of mixing 5% cement consumption. The overburden main part is deep overburden, evenly arrange a plurality of drain pipes in the tailrace bottom plate, has reduced the uplift pressure value of its lower part through the drain pipe, the drain pipe lower part is provided with blind material of longitudinal drainage and the blind material of transverse drainage respectively, set up the blind material of drainage in the drain pipe. Adopt the structure has reduced the native soil erosion and water loss of tail water bottom plate lower part overburden greatly, avoids producing inhomogeneous ground and subsides, has reduced the construction degree of difficulty simultaneously for the construction progress.
Description
Technical field
The utility model relates to a kind of tailrace covering layer foundation structure, belongs to hydraulic engineering technical field.
Background technology
In hydraulic structure, powerhouse of hydropower station tailwater channel base plate infrastructure is covering layer, due to the impact by foundation bottom pressure fluctuation meter, base plate undercloak soil is run off, causes base plate differential settlement to destroy.The measure usually taked at present for above problem is: if the covering layer degree of depth is more shallow, can adopt the tectal method of concrete replacement; If covering layer is thicker, generally can adopts the thickness of increase tailwater channel underplate concrete or consolidation grouting is carried out to covering layer.Above two kinds of methods compared with thick-covering based process, engineering effort is better, but construction investment is relatively large, and economic indicator is comparatively responsive, and difficulty of construction is comparatively large simultaneously, and construction speed is slow.
Summary of the invention
For solving the problem, the utility model provides a kind of tailrace covering layer foundation structure.Thus reduce the soil erosion of draft-tube floor undercloak soil, avoid producing uneven foundation settlement, reduce difficulty of construction, accelerating construction progress simultaneously.
The utility model is achieved by following technical solution.
A kind of tailrace covering layer foundation structure, comprises covering layer main body and tailwater channel concrete floor, is provided with the backfill bed of material between described covering layer main body and tailwater channel concrete floor
The described backfill bed of material is adopt the backfill mixing 5% cement consumption.
Described covering layer main body is deep covering layer.
Some gutters have been evenly arranged in described tailwater channel base plate.The uplift force value of its underpart is reduced by gutter.
Described gutter bottom is respectively arranged with the blind material of longitudinal drainage and the blind material of transverse drainage.
The blind material of draining is set in described gutter.
The thickness of the described backfill bed of material is 0.3m ~ 1/2 times of water mixing cement concrete base plate.
The beneficial effects of the utility model are:
Compared with prior art, the utility model effectively reduces the soil erosion of draft-tube floor undercloak soil, avoids producing uneven foundation settlement; Tailwater channel base plate is made to be seated on more stable base surface; After the process of tailwater channel base plate, the engineering quantity on covering layer basis is less, and investment comparatively economizes, and difficulty of construction is less, and progress is very fast.Structure processing method construction described in the utility model is simple, and construction speed is very fast, and material requested easily obtains, and construction quality easily controls, and construction investment is comparatively economized; There is good economic benefit and social benefit, have broad application prospects.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-covering layer main body, 2-packing layer, the blind material of 3-longitudinal drainage, 4-gutter, 5-tailwater channel concrete floor, the blind material of 6-transverse drainage.
Detailed description of the invention
The technical solution of the utility model is further described below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
As shown in Figure 1, a kind of tailrace covering layer foundation structure described in the utility model, comprises covering layer main body 1 and tailwater channel concrete floor 5, is provided with the backfill bed of material 2 between described covering layer main body 1 and tailwater channel concrete floor 5
The described backfill bed of material 2 is adopt the backfill mixing 5% cement consumption.
Described covering layer main body 1 is deep covering layer.
Some gutters 4 have been evenly arranged in described tailwater channel base plate 5.The uplift force value of its underpart is reduced by gutter 4.
Described gutter 4 bottom is respectively arranged with the blind material of longitudinal drainage 3 and the blind material 6 of transverse drainage.To reduce the soil erosion of covering layer 1.
The blind material of draining is set in described gutter 4.
The thickness of the described backfill bed of material 2 is 0.3m ~ 1/2 times of water mixing cement concrete base plate thickness.
As shown in Figure 1, the utility model is when constructing, described covering layer base matrix 1 top first arranges that one deck mixes the backfill bed of material 2 of 5% cement consumption, after the backfill bed of material 2 meets water hardening, as the basis of tailwater channel underplate concrete 5, better can reduce soil erosion, the differential settlement of reply tailwater channel base plate.
When the backfill bed of material is less than 0.3m, anti-settling effect is poor, and the backfill bed of material is blocked up, and actual effect is little, will increase construction investment simultaneously;
Filling of the described backfill bed of material 2 need meet code requirement;
Described underplate concrete 5 complete backfill the bed of material 2 fill after-pouring, as tail water flow-passing surface.
As shown in Figure 1, the utility model mainly carries out in accordance with the following steps:
The first step, excavates out the covering layer main body 1 of basic infrastructure by structure section requirement;
Second step, does covering layer main body 1 surface be excavated and suitable rolls process;
3rd step, the backfill bed of material 2 of 5% cement consumption has been mixed in backfill, and fills by code requirement;
4th step, the backfill bed of material 2 arranges the blind material 3 of draining and gutter 4;
5th step, the backfill bed of material 2 builds underplate concrete 5.
The utility model can be widely used in the construction of Hydropower Station river formula factory building tailwater channel.Because this tailwater channel undercloak is thicker, for increasing the monolithic stability of tailwater channel base plate, and save construction investment, accelerating construction progress, have employed this utility model structure simultaneously, and from scene, overall is respond well.
Claims (6)
1. a tailrace covering layer foundation structure, it is characterized in that: comprise covering layer main body (1) and tailwater channel concrete floor (5), between described covering layer main body (1) and tailwater channel concrete floor (5), be provided with the backfill bed of material (2).
2. a kind of tailrace covering layer foundation structure according to claim 1, is characterized in that: the described backfill bed of material (2) is adopt the backfill mixing 5% cement consumption.
3. a kind of tailrace covering layer foundation structure according to claim 1, is characterized in that: described covering layer main body (1) is deep covering layer.
4. a kind of tailrace covering layer foundation structure according to claim 1, is characterized in that: be evenly arranged some gutters (4) in described tailwater channel base plate (5).
5. a kind of tailrace covering layer foundation structure according to claim 4, is characterized in that: described gutter (4) bottom is respectively arranged with the blind material of longitudinal drainage (3) and the blind material of transverse drainage (6).
6. a kind of tailrace covering layer foundation structure according to claim 4, is characterized in that: arrange the blind material of draining in described gutter (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520336932.3U CN204738280U (en) | 2015-05-22 | 2015-05-22 | Power station tailrace overburden foundation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520336932.3U CN204738280U (en) | 2015-05-22 | 2015-05-22 | Power station tailrace overburden foundation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204738280U true CN204738280U (en) | 2015-11-04 |
Family
ID=54420024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520336932.3U Active CN204738280U (en) | 2015-05-22 | 2015-05-22 | Power station tailrace overburden foundation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204738280U (en) |
-
2015
- 2015-05-22 CN CN201520336932.3U patent/CN204738280U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204023501U (en) | A kind of reinforcement Anti-seeping technology structure for earth and rockfill dam | |
| CN100549312C (en) | A kind of method of high density less slurry grouting and reinforcing ground | |
| CN103422511B (en) | A kind of reinforcement method for transmission tower shallow base foundation under composite soft soil foundation | |
| CN203546678U (en) | Asphalt concrete core-wall rockfill dam structure | |
| CN103046534B (en) | Method for improving bearing capacity of foundation | |
| CN104929129A (en) | Concrete cover-weight consolidation grouting method for non-cover-weight combination of different holes through guide pipes | |
| CN105421498B (en) | A kind of foundation ditch water-impervious and subsidence control method based on three-dimensional curtain gang of wells system | |
| CN204738280U (en) | Power station tailrace overburden foundation structure | |
| CN103966981B (en) | Force transferring structure and the construction method thereof of arch dam is built on weathering rock mass | |
| CN207484405U (en) | A kind of concrete cut | |
| CN203113359U (en) | Earth rock cofferdam structure | |
| CN204456055U (en) | A kind of embankment foundation reinforcing structure facility | |
| CN210262945U (en) | Cemented sand gravel buttress dam structure | |
| CN203741782U (en) | Multi-section face plate structure of high concrete faced rockfill dam | |
| CN202164579U (en) | Stepped concrete connecting structure for seepage-proof geomembrane of earth-rock dam or cofferdam and abrupt slope rock foundation | |
| CN202023198U (en) | Pressure-reducing anti-buoyancy pipe network drainage device | |
| CN207314822U (en) | A kind of draining bleed increase-volume steel form | |
| CN205000287U (en) | Prevention of seepage panel structure of long -term fluctuation zone of groundwater | |
| CN205134355U (en) | A foundation structure for shallow overburden wind generating set | |
| CN204875665U (en) | A power station tailrace barricade that is used for medium thickness sand gravel basis | |
| CN204753544U (en) | Laid dry stone composite construction escape canal | |
| CN204570611U (en) | A kind of structure of preventing and treating power plant building tailwater channel foundation uneven settlement | |
| CN203891049U (en) | Hydropower station workshop foundation | |
| CN204238191U (en) | A kind of arrangement of high water head fish pass | |
| CN204690691U (en) | The upper and lower disjunctor leakage preventing structure of a kind of native stone mixed dam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |