CN108677880A - For the stake woods dam under complex geological condition - Google Patents
For the stake woods dam under complex geological condition Download PDFInfo
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- CN108677880A CN108677880A CN201810840311.7A CN201810840311A CN108677880A CN 108677880 A CN108677880 A CN 108677880A CN 201810840311 A CN201810840311 A CN 201810840311A CN 108677880 A CN108677880 A CN 108677880A
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- cross beam
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- 238000010276 construction Methods 0.000 claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000004567 concrete Substances 0.000 claims abstract description 12
- 238000005266 casting Methods 0.000 claims abstract description 3
- 238000000465 moulding Methods 0.000 claims abstract description 3
- 239000011435 rock Substances 0.000 claims description 34
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
Abstract
The invention discloses a kind of stake woods dams and its flow-guiding construction method under complex geological condition, belong to hydraulic and hydroelectric engineering field, for solving the problem of that the use filling pile construction mode of existing stake woods dam structure is unfavorable for constructing under complex geological condition.Stake woods dam includes the dam foundation, pile body and connecting cross beam；The bottom of the dam foundation is embedded within riverbed basis, and is provided with flow-guiding channel in the dam foundation；Pile body and the integral structure that the dam foundation is concrete moulding by casting.By being provided with the dam foundation and pile body of integral structure, the fixation supporting role to pile body is provided by dam foundation structure, without constructing to form pile body by bored concrete pile mode；It can be effectively adapted under complex geological condition.River is divided into two half parts of left and right and successively constructed, made full use of the flow-guiding channel in the dam foundation to carry out water conservancy diversion, realize dry work by flow-guiding construction method of the present invention；And with the advantages such as easy for construction, efficient and cheap.
Description
Technical field
The present invention relates to hydraulic and hydroelectric engineering field more particularly to a kind of stake woods dam under complex geological condition and its
Flow-guiding construction method.
Background technology
In recent years, Southwestern China narrow valley region water power great development, the cheuch river in power station are highly prone to the danger of mud-rock flow
Evil, seriously affects the construction of hydroelectric project, jeopardizes the life security of personnel, cause huge economic loss and social influence.Mesh
Before, it is tumbled from eminence with block stone or sundries when mud-rock flow occurs and causes damages huge, the interception of block stone or sundries is become
The key of Controlling Debris Flow success or failure.Stake woods dam structure is preferable to the interception effect of block stone and sundries, thus in southwestern narrow valley region
Using more in river.
The stake woods dam construction period is shorter, can more play function of blocking as early as possible, more advantageous to the construction of hydroelectric project, and traditional
Stake woods dam structure formed using filling pile construction.However, Southwestern China narrow valley region topographic and geologic condition is extremely complex, rock mass
Structure is poor, and combination is complicated, and sand content is high, and ditch bedstead sky phenomenon is serious, and ditch bed orphan's block stone diameter is big, and is unevenly distributed, and makes
It is difficult to obtain the filling pile construction that conventional piles woods dam structure uses, great difficulty, serious shadow are brought to the construction on stake woods dam
Ring the construction period.
Meanwhile cheuch river perennial flowing water, the withered phase flow of water flow is small, and flood season flow is very big, and flow flood season it
It is preceding that there is gradual increased trend, water conservancy diversion construction how is carried out to ensure that a dry work for woods dam structure is one urgently to be resolved hurrily
Engineering problem.
Invention content
Present invention solves the technical problem that being：Existing stake woods dam structure uses filling pile construction mode, is unfavorable for multiple
The problem of constructing under miscellaneous geological conditions.
The technical solution adopted by the present invention to solve the technical problems is：For the stake woods dam under complex geological condition, stake
Integrally horizontal intercept with overstating is arranged in river on woods dam, and both ends are connected with the both sides bank in river respectively；Stake woods dam includes
The dam foundation, pile body and connecting cross beam；The bottom of the dam foundation is embedded within riverbed basis, and is provided with and leads in the dam foundation
Stake woods above and below the dam river is connected to by circulation road, the flow-guiding channel；The pile body is provided with an at least row, and often row includes
The pile body of more spaced and parallel settings, connecting cross beam are used to connect on the top of corresponding pile body；Pile body is poured with the dam foundation for concrete
The integral structure of injection forming.
It is further：The connecting cross beam includes middle part connecting cross beam and top connecting cross beam, and the middle part connection is horizontal
Beam is used to connect at the middle part of corresponding pile body, and the top connecting cross beam is used to connect at the middle part of corresponding pile body.
It is further：Depth in the bottom insertion riverbed basis of the dam foundation is not less than 2 meters.
It is further：Pile body and the dam foundation are reinforced concrete structure, and the reinforcing bar in pile body be located at the dam foundation
Interior reinforcing bar is to connection.
It is further：Pile body is cylindric, and cross-sectional diameter is more than 0.8m.
It is further：The height that pile body is located at the dam foundation or more is not more than 8 meters.
It is further：When being provided with multiple rows of pile body, adjacent two rows of pile bodies mutually stagger setting, and the two rows that are connected
In pile body, the pile body in previous row is connected by connecting cross beam two pile bodies nearest with both sides in latter row respectively；In stake woods
The both ends of dam entirety are respectively arranged with bank concrete guard wall.
In addition, the present invention also provides a kind of flow-guiding construction method for the stake woods dam under complex geological condition, it is described to lead
Stream construction method includes the following steps：
Step 1: a phase water conservancy diversion：From river, wherein side bank heap builds a phase rock ballast cofferdam, makes flow from the river other side
Overcurrent；A phase part construction area is surrounded on the side bank by a phase rock ballast cofferdam, is carried out in a phase part construction area
The one phase dam foundation construction on stake woods dam, in a phase dam foundation work progress, pre-buried pipeline is logical to form water conservancy diversion in the corresponding dam foundation
Road；
Step 2: second-stage river diversion：A phase rock ballast cofferdam is removed, and the second stage of rock ballast cofferdam is built in river other side bank heap,
And the second stage of rock ballast cofferdam is connected with a phase dam foundation, makes flow-guiding channel overcurrent of the flow out of a phase dam foundation；Pass through the second stage of rock ballast
Cofferdam surrounds the second stage of local construction area on the side bank, and the second stage of dam foundation that stake woods dam is carried out in the second stage of local construction area is applied
Work, in the second stage of dam foundation work progress, pre-buried pipeline is to form flow-guiding channel in the corresponding dam foundation；Wherein, the second stage of dam foundation with
The one phase dam foundation is connected and forms a dam foundation for woods dam entirety；
Step 3: three phase water conservancy diversion：Removal the second stage of rock ballast cofferdam keeps water conservancy diversion of the flow out of a phase dam foundation and the second stage of dam foundation logical
Road overcurrent；Then the construction of the pile body and connecting cross beam on stake woods dam is carried out；
Also, the conveyance capacity of pre-buried pipeline wants the overcurrent of streamflow during meeting second-stage river diversion in a phase dam foundation
It asks；To the mistake of streamflow during the conveyance capacity three phase water conservancy diversion of satisfaction of the sum of pre-buried pipeline in the one phase dam foundation and the second stage of dam foundation
Stream requires；
Wherein, the overcurrent described above to streamflow requires to avoid flow from being covered from the surface of the dam foundation.
It is further：In step 3, sandbag cofferdam is built in the upstream side heap of dam foundation integral platform first, to increase gear
Then water elevation carries out the construction of the pile body and connecting cross beam on woods dam again.
It is further：Connecting cross beam includes middle part connecting cross beam and top connecting cross beam；In step 3, stake woods is carried out
The construction of the pile body and connecting cross beam on dam includes the following steps：
Step A, the construction of middle part connecting cross beam and middle part connecting cross beam pile body below is carried out first；
Step B, and then sandbag cofferdam is removed；
Step C, the construction of the pile body and top connecting cross beam of middle part connecting cross beam or more is finally carried out.
The beneficial effects of the invention are as follows：Stake woods of the present invention dam, by the dam foundation and the stake that are provided with integral structure
Body provides the fixation supporting role to pile body, without constructing to form pile body by bored concrete pile mode by dam foundation structure；It can be effectively
Suitable under complex geological condition；In addition, flow-guiding channel is formed by pre-buried pipeline in the dam foundation, it in this way can effectively just
In in stake woods dam work progress, water conservancy diversion is carried out by flow-guiding channel so that construction environment is dry work.
In addition, flow-guiding construction method of the present invention, makes full use of stake woods of the present invention dam structure, by river
It is divided into two half parts of left and right successively to construct, in the construction process, the flow-guiding channel in the dam foundation is made full use of, in combination with river
The Annual distribution of road withered phase and flood season realize applying dryly for a woods dam.The flow-guiding construction method of the present invention is relative to traditional
It is perfused for piling method, there are the advantages such as easy for construction, efficient and cheap；Also, cheuch can be combined well
The characteristics of streamflow changes, it is ensured that the linking of entire water conservancy diversion work progress is smooth.
Description of the drawings
Fig. 1 is the cross-sectional view on stake woods of the present invention dam；
Fig. 2 to Fig. 5 is the structural schematic diagram on different phase corresponding stake woods dam in flow-guiding construction method of the present invention；
In figure label for：River 1, the dam foundation 2, a phase dam foundation 21, the second stage of dam foundation 22, pile body 3, connecting cross beam 4, middle part connection
Crossbeam 41, top connecting cross beam 42, riverbed basis 5, flow-guiding channel 6, a phase rock ballast cofferdam 7, the second stage of rock ballast cofferdam 8, sandbag enclose
Weir 9, bank concrete guard wall 10.
Specific implementation mode
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in fig. 1, the stake woods dam of the present invention under complex geological condition, wherein it is described intricately
That location condition refers to riverbed basis there are rock mass structures is poor, combination is complicated, sand content is high, ditch bedstead sky phenomenon is serious and ditch bed is lonely
Block stone diameter is big and the geologic condition for the combination that one or more of is unevenly distributed situation；In such multiplexed address condition
Under, using traditional filling pile construction, there are constructional difficulties, and since riverbed foundation structure is poor, are formed after final construction
Stake woods dam structural stability it is poor.Integrally horizontal intercept with overstating is arranged in river 1 on stake woods of the present invention dam, both ends point
It is not connected with the both sides bank in river 1；Stake woods dam includes the dam foundation 2, pile body 3 and connecting cross beam 4；The bottom of the dam foundation 2
It is embedded within riverbed basis 5, and is provided with flow-guiding channel 6 in the dam foundation 2, the flow-guiding channel 6 will be on stake woods dam
Downstream river course 1 is connected to；The pile body 3 is provided with an at least row, and often row includes the pile body 3 of more spaced and parallel settings, even
Crossbeam 4 is connect for connecting the top of corresponding pile body 3；Pile body 3 and the integral structure that the dam foundation 2 is concrete moulding by casting.
Stake woods of the present invention dam in this way can be connected the ground 2 on entire stake woods dam by being provided with 2 structure of the dam foundation
It is connected into unified entirety, while the dam foundation 2 and pile body 3 integral structure made of concrete cast, can ensure that the dam foundation 2 in this way
Stability, and then ensure the stability of pile body 3.More specifically, pile body 3 and the dam foundation 2 are reinforced concrete structure, and are located at stake
Reinforcing bar in body 3 and the reinforcing bar in the dam foundation 2 are to connecting；It can further improve the connection jail between pile body 3 and the dam foundation 2 in this way
Solidity；And then ensure the interdiction capability of pile body 3.
In addition, the depth in the bottom insertion riverbed basis 5 of the dam foundation 2 is not less than 2 meters；When Specific construction, need to riverbed
Basis 5 carries out certain excavation construction, to form the cast foundation pit of the dam foundation 2.Pass through above-mentioned setting, it can be ensured that 2 entirety of the dam foundation
Stability, certainly, the upper end of the dam foundation 2 should be higher by basic 5 certain altitudes in riverbed, in order to realize certain interception to streamflow
Then effect carries out water conservancy diversion by flow-guiding channel 6, streamflow is avoided to cover the dam foundation 2 in the construction process.
In addition, the present invention further forms flow-guiding channel 6 in the dam foundation 2.The effect that flow-guiding channel 6 is arranged is to carry out stake
Woods dam plays guide functions during constructing, and avoids flow from covering the dam foundation 2, and then ensure dry work condition, convenient for construction
Operation.Certainly, without loss of generality, the conveyance capacity of flow-guiding channel 6, should be according to specific construction procedure and corresponding time
The parameters such as the discharge of river in section are rationally arranged.
More specifically, the effect of connecting cross beam 4 is the middle and upper part for connecting pile body 3, to enhance the whole structure of pile body 3
Stability.Specifically, with reference to shown in attached drawing 1, the connecting cross beam 4 in the present invention is connected including middle part connecting cross beam 41 with top
Crossbeam 42, the middle part connecting cross beam 41 are used to connect at the middle part of corresponding pile body 3, and the top connecting cross beam 42 is used for phase
The middle part of pile body 3 is answered to connect.
Without loss of generality, the pile body 3 in the present invention is adopted as cylindric, and cross-sectional diameter is more than 0.8m, to ensure stake
The interdiction capability of body 3.
In addition, for the height of pile body 3, pile body 3 can be set and be located at the height of 2 or more the dam foundation no more than 8 meters.
In addition, the pile body 3 in the present invention theoretically may be provided with it is multiple rows of, it is described it is multiple rows of refer to it is no less than two rows of.Such as
In specific example shown in attached drawing 1 and attached drawing 5, to be provided with two rows of pile bodies 3.Specifically, when being provided with multiple rows of pile body 3,
Adjacent two rows of pile bodies 3 mutually stagger setting, so-called to mutually stagger setting, that is, refer to along river prevalence direction, a upper row
A certain pile body be located between two pile bodies of next row；It is specific as shown in Fig. 5.In the case of above-mentioned stagger setting,
Further setting is connected in two rows of pile bodies 3, and the pile body 3 in previous row is nearest by connecting cross beam 4 and both sides in latter row respectively
Two pile bodies 3 be connected；Cross-like connection structure can be formed by pile body 3 and connecting cross beam 4 in this way, to improve pile body 3
Whole stability.
In addition, being further respectively arranged with bank concrete guard wall 10 at the both ends of stake woods dam entirety；Bank concrete gear
The effect of wall 10 is that the both ends Lin Ba is made effectively to be connect with the bank in river.
Flow-guiding construction method of the present invention for the stake woods dam under complex geological condition, wherein stake woods dam is
The stake woods dam being used under complex geological condition described in aforementioned present invention；The flow-guiding construction method includes the following steps：
Step 1: a phase water conservancy diversion：From river 1, wherein side bank heap builds a phase rock ballast cofferdam 7, keeps flow another from river 1
Side overcurrent；A phase part construction area is surrounded on the side bank by a phase rock ballast cofferdam 7, in a phase part construction area
A phase dam foundation 21 construction on stake woods dam is carried out, in 21 work progress of a phase dam foundation, pre-buried pipeline is with shape in the corresponding dam foundation 2
At flow-guiding channel 6；
Step 2: second-stage river diversion：A phase rock ballast cofferdam 7 is removed, and the second stage of rock ballast cofferdam is built in 1 other side bank heap of river
8, and the second stage of rock ballast cofferdam 8 is connected with a phase dam foundation 21, makes flow-guiding channel 6 overcurrent of the flow out of a phase dam foundation 21；Pass through
The second stage of rock ballast cofferdam 8 surrounds the second stage of local construction area on the side bank, and stake woods dam is carried out in the second stage of local construction area
The second stage of dam foundation 22 is constructed, and in 22 work progress of the second stage of dam foundation, pre-buried pipeline is to form flow-guiding channel 6 in the corresponding dam foundation 2；
Wherein, the second stage of dam foundation 22 is connected with a phase dam foundation 21 and forms a dam foundation 2 for woods dam entirety；
Step 3: three phase water conservancy diversion：Removal the second stage of rock ballast cofferdam 8, makes flow out of a phase dam foundation 21 and the second stage of dam foundation 22
6 overcurrent of flow-guiding channel；Then the construction of the pile body 3 and connecting cross beam 4 on stake woods dam is carried out；
Also, the conveyance capacity of pre-buried pipeline meets the mistake to 1 flow of river during second-stage river diversion in a phase dam foundation 21
Stream requires；To river during the conveyance capacity three phase water conservancy diversion of satisfaction of the sum of pre-buried pipeline in the one phase dam foundation 21 and the second stage of dam foundation 22
The overcurrent requirement of 1 flow；
Wherein, the overcurrent described above to 1 flow of river requires to avoid flow from being covered from the surface of the dam foundation 2.
Without loss of generality, in the flow-guiding construction method on above-mentioned stake woods dam, the construction period is preferably provided at the withered phase in river
It carries out, the water flow in its river is less in this way, can be by river after interception or the progress water conservancy diversion of corresponding flow-guiding channel 6
Streamflow can be met；It is excessive and cover corresponding rock ballast cofferdam or the dam foundation 2 to avoid flow.
Specifically, above-mentioned phase rock ballast cofferdam 7 and the second stage of rock ballast cofferdam 8 are to be formed after building corresponding rock ballast by heap
Temporary Cofferdam structure, the purpose is to the banks of the corresponding side in river 1, and flow is isolated, and then form the dam foundation 2 for corresponding portion
The construction area of construction, and since flow is isolated, it is thus ensured that construction area is dry work.A wherein phase rock ballast cofferdam
7, which specifically can refer to progress heap shown in attached drawing 2, builds, and uses C-shaped configuration to form the dry work of C-shaped on the side bank in river
Region, at this time other side overcurrent of the flow from river.And the second stage of rock ballast cofferdam 8 then can directly stretch one end with a phase dam foundation 21
The one end entered in the middle part of river is connected, and the other end is then connected with corresponding bank, can pass through the second stage of 8 He of rock ballast cofferdam in this way
The one phase dam foundation 21 blocks river completely；Flow can carry out water conservancy diversion by the flow-guiding channel 6 in a phase dam foundation 21 completely at this time.Certainly,
Without loss of generality, the dam foundation 2 is higher by the height of riverbed surface and the flow conductivity of flow-guiding channel 6 should be ensured that and construct accordingly
The effective overcurrent of stage interior energy, and then from 2 surface overcurrent of the dam foundation after avoiding flow from flooding the dam foundation 2, it is ensured that dry work.
In addition, in order to improve the water-retaining capacity of the dam foundation 2 temporarily, it can also be in step 3, first in 2 integral platform of the dam foundation
Upstream side heap builds sandbag cofferdam 9, to increase water blocking elevation, then carries out applying for a pile body on woods dam 3 and connecting cross beam 4 again
Work.Certainly, without loss of generality, in step 2, also sandbag cofferdam 9 can be built to carry out temporary water dash by heap on a phase dam foundation 21.
It is successively carried out in addition, can also the construction of pile body 3 and connecting cross beam 4 be further divided into two parts in the present invention,
Specially：Connecting cross beam 4 includes middle part connecting cross beam 41 and top connecting cross beam 42；In step 3, the stake on stake woods dam is carried out
The construction of body 3 and connecting cross beam 4 includes the following steps：
Step A, the construction of middle part connecting cross beam 41 and 41 pile body 3 below of middle part connecting cross beam is carried out first；
Step B, and then sandbag cofferdam 9 is removed；
Step C, the construction of the pile body 3 and top connecting cross beam 42 of 41 or more connecting cross beam of middle part is finally carried out.
The benefit being arranged in this way is, can be in the construction of 41 pile body 3 below of middle part connecting cross beam 41 and middle part connecting cross beam
After the completion, that is, streamflow is allowed to cover overcurrent behind 2 surface of the dam foundation, then river conveyance capacity enhances, and can meet river from withered
The gradual increased demand of phase to flood season flow in process；And cross is connected with top for the pile body 3 of 41 or more middle part connecting cross beam
The construction of beam 42 then can subsequently continue；Construction efficiency can be effectively improved, reduces subsequent construction in the process to river mistake
The requirement of streamflow.
Claims (10)
1. for the stake woods dam under complex geological condition, it is characterised in that：Integrally horizontal intercept with overstating is arranged in river (1) on stake woods dam
Interior, both ends are connected with the both sides bank of river (1) respectively；Stake woods dam includes the dam foundation (2), pile body (3) and connecting cross beam
(4)；The bottom of the dam foundation (2) is embedded within riverbed basic (5), and is provided with flow-guiding channel in the dam foundation (2)
(6), stake woods above and below the dam river (1) is connected to by the flow-guiding channel (6)；The pile body (3) is provided with an at least row, and every
Row includes the pile body (3) of more spaced and parallel settings, and connecting cross beam (4) is used to connect on the top of corresponding pile body (3)；Pile body
(3) it is the integral structure of concrete moulding by casting with the dam foundation (2).
2. as described in claim 1 for the stake woods dam under complex geological condition, it is characterised in that：The connecting cross beam (4)
Including middle part connecting cross beam (41) and top connecting cross beam (42), the middle part connecting cross beam (41) is used for corresponding pile body (3)
Middle part connection, the top connecting cross beam (42) is used to connect at the middle part of corresponding pile body (3).
3. as described in claim 1 for the stake woods dam under complex geological condition, it is characterised in that：The bottom of the dam foundation (2)
The depth that portion is embedded in riverbed basic (5) is not less than 2 meters.
4. as described in claim 1 for the stake woods dam under complex geological condition, it is characterised in that：Pile body (3) and the dam foundation (2)
For reinforced concrete structure, and the reinforcing bar in pile body (3) and the reinforcing bar that is located in the dam foundation (2) are to connecting.
5. as described in claim 1 for the stake woods dam under complex geological condition, it is characterised in that：Pile body (3) be it is cylindric,
Its cross-sectional diameter is more than 0.8m.
6. as described in claim 1 for the stake woods dam under complex geological condition, it is characterised in that：Pile body (3) is located at the dam foundation
(2) height more than is not more than 8 meters.
7. the stake woods dam being used under complex geological condition as described in any one of claim 1 to 6, it is characterised in that：
When being provided with multiple rows of pile body (3), adjacent two rows of pile bodies (3) mutually stagger setting, and are connected in two rows of pile bodies (3), previous
Pile body (3) in row is connected by connecting cross beam (4) two pile bodies (3) nearest with both sides in latter row respectively；On stake woods dam
Whole both ends are respectively arranged with bank concrete guard wall (10).
8. the flow-guiding construction method for the stake woods dam under complex geological condition, it is characterised in that：Stake woods dam is above-mentioned power
Profit requires the stake woods dam being used under complex geological condition described in any one of 1 to 7；The flow-guiding construction method includes as follows
Step：
Step 1: a phase water conservancy diversion：A phase rock ballast cofferdam (7) is built from river (1) wherein side bank heap, makes flow from river (1)
Other side overcurrent；A phase part construction area is surrounded on the side bank by a phase rock ballast cofferdam (7), in a phase part construction area
A phase dam foundation (21) construction on stake woods dam is carried out in domain, it is pre- in the corresponding dam foundation (2) in the phase dam foundation (21) work progress
Pipe laying road is to form flow-guiding channel (6)；
Step 2: second-stage river diversion：A phase rock ballast cofferdam (7) is removed, and the second stage of rock ballast cofferdam is built in river (1) other side bank heap
(8), and the second stage of rock ballast cofferdam (8) is connected with a phase dam foundation (21), makes flow-guiding channel (6) of the flow out of a phase dam foundation (21)
Overcurrent；Surround the second stage of local construction area on the side bank by the second stage of rock ballast cofferdam (8), in the second stage of local construction area into
The second stage of dam foundation (22) on row stake woods dam is constructed, in the second stage of dam foundation (22) work progress, the pre-buried pipeline in the corresponding dam foundation (2)
To form flow-guiding channel (6)；Wherein, the second stage of dam foundation (22) is connected with a phase dam foundation (21) and forms a dam foundation for woods dam entirety
(2)；
Step 3: three phase water conservancy diversion：The second stage of rock ballast cofferdam (8) of removal, makes flow out of a phase dam foundation (21) and the second stage of dam foundation (22)
Flow-guiding channel (6) overcurrent；Then the construction of the pile body (3) and connecting cross beam (4) on stake woods dam is carried out；
Also, the conveyance capacity of pre-buried pipeline meets the mistake to river (1) flow during second-stage river diversion in a phase dam foundation (21)
Stream requires；The conveyance capacity of the sum of pre-buried pipeline is right during meeting three phase water conservancy diversion in the one phase dam foundation (21) and the second stage of dam foundation (22)
The overcurrent requirement of river (1) flow；
Wherein, the overcurrent described above to river (1) flow requires to avoid flow from being covered from the surface of the dam foundation (2).
9. the flow-guiding construction method for the stake woods dam under complex geological condition as claimed in claim 8, it is characterised in that：
In step 3, build sandbag cofferdam (9) in the upstream side heap of the dam foundation (2) integral platform first, to increase water blocking elevation, then again into
The construction of the pile body (3) and connecting cross beam (4) on row stake woods dam.
10. the flow-guiding construction method for the stake woods dam under complex geological condition as claimed in claim 9, it is characterised in that：
Connecting cross beam (4) includes middle part connecting cross beam (41) and top connecting cross beam (42)；In step 3, the pile body on stake woods dam is carried out
(3) and the construction of connecting cross beam (4) includes the following steps：
Step A, the construction of middle part connecting cross beam (41) and middle part connecting cross beam (41) pile body below (3) is carried out first；
Step B, and then sandbag cofferdam (9) are removed；
Step C, the construction of the pile body (3) and top connecting cross beam (42) of middle part connecting cross beam (41) or more is finally carried out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810840311.7A CN108677880B (en) | 2018-07-27 | 2018-07-27 | Pile-forest dam for complex geological conditions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810840311.7A CN108677880B (en) | 2018-07-27 | 2018-07-27 | Pile-forest dam for complex geological conditions |
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| CN108677880A true CN108677880A (en) | 2018-10-19 |
| CN108677880B CN108677880B (en) | 2024-03-19 |
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| CN201810840311.7A Active CN108677880B (en) | 2018-07-27 | 2018-07-27 | Pile-forest dam for complex geological conditions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006076A (en) * | 2021-03-04 | 2021-06-22 | 中国电建集团华东勘测设计研究院有限公司 | Flow isolation building structure for dry land construction and construction method |
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| CN208604552U (en) * | 2018-07-27 | 2019-03-15 | 中国电建集团成都勘测设计研究院有限公司 | For the stake woods dam under complex geological condition |
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| JP2005200933A (en) * | 2004-01-15 | 2005-07-28 | Komiyama Doboku:Kk | Comb dam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113006076A (en) * | 2021-03-04 | 2021-06-22 | 中国电建集团华东勘测设计研究院有限公司 | Flow isolation building structure for dry land construction and construction method |
| CN113006076B (en) * | 2021-03-04 | 2022-06-10 | 中国电建集团华东勘测设计研究院有限公司 | Flow isolation building structure for dry land construction and construction method |
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| CN108677880B (en) | 2024-03-19 |
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