CN208604552U - 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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- CN208604552U CN208604552U CN201821200217.7U CN201821200217U CN208604552U CN 208604552 U CN208604552 U CN 208604552U CN 201821200217 U CN201821200217 U CN 201821200217U CN 208604552 U CN208604552 U CN 208604552U
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Abstract
The utility model 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 flow-guiding channel is provided in the dam foundation, and stake woods above and below the dam river is connected to by the flow-guiding channel；The pile body is provided with an at least row, and every row includes the pile body of more spaced and parallel settings, and connecting cross beam is used to connect on the top of corresponding pile body；Pile body and the dam foundation are the integral structure of concrete moulding by casting.The utility model provides the fixation supporting role to pile body by being provided with the dam foundation and pile body of integral structure, by dam foundation structure, without constructing to form pile body by bored concrete pile mode；It can be effectively adapted under complex geological condition.
Description
Technical field
The utility model relates to hydraulic and hydroelectric engineering field more particularly to a kind of stake woods dams under complex geological condition
And its flow-guiding construction method.
Background technique
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 with block stone or sundries from eminence 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, brings great difficulty, serious shadow 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 with the trend being gradually increased, how to carry out water conservancy diversion construction to guarantee that a dry work for woods dam structure is one urgently to be resolved
Engineering problem.
Utility model content
The technical issues of the utility model solves is: existing stake woods dam structure uses filling pile construction mode, is unfavorable for
The problem of constructing under complex geological condition.
The technical scheme adopted by the utility model to solve the technical problem is as follows: for the stake woods under complex geological condition
Dam, integrally horizontal intercept with overstating is arranged in river on stake woods dam, and both ends are connected with the two sides bank in river respectively；Stake woods dam
Including the dam foundation, pile body and connecting cross beam；The bottom of the dam foundation is embedded within riverbed basis, and is arranged in the dam foundation
There is flow-guiding channel, stake woods above and below the dam river is connected to by the flow-guiding channel；The pile body is provided with an at least row, and every row
Pile body including more spaced and parallel settings, connecting cross beam are used to connect on the top of corresponding pile body；Pile body and the dam foundation are coagulation
The integral structure of native moulding by casting.
Further, the connecting cross beam includes middle part connecting cross beam and top connecting cross beam, 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.
Further, the depth in the bottom insertion riverbed basis of the dam foundation is not less than 2 meters.
Further, pile body and the dam foundation are reinforced concrete structure, and it is located at the intracorporal reinforcing bar of stake and is located at the dam foundation
Interior reinforcing bar is to connection.
Further, pile body be it is cylindric, cross-sectional diameter be greater than 0.8m.
Further, pile body is located at the height of the dam foundation or more no more than 8 meters.
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 passes through connecting cross beam two pile bodies nearest with two sides in latter row respectively and is connected；In stake woods
The both ends of dam entirety are respectively arranged with bank concrete guard wall.
In addition, the utility model also provides a kind of flow-guiding construction method for the stake woods dam under complex geological condition, institute
Flow-guiding construction method is stated to include the following steps:
Step 1: a phase water conservancy diversion: from river, wherein side bank heap builds a phase rock ballast cofferdam, makes water 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: one phase rock ballast cofferdam of removal, 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 water flow from the flow-guiding channel overcurrent in 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 in the corresponding dam foundation to form flow-guiding channel；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: removing the second stage of rock ballast cofferdam, keep water flow logical from the water conservancy diversion in a phase dam foundation and the second stage of dam foundation
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 water flow from covering from the surface of the dam foundation.
Further, sandbag cofferdam is built in the upstream side heap of dam foundation integral platform first in step 3, to increase gear
Then water elevation carries out the construction of the pile body and connecting cross beam on woods dam again.
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, sandbag cofferdam is then 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 utility model are: stake woods described in the utility model dam, by being provided with integral structure
The dam foundation and pile body provide the fixation supporting role to pile body by dam foundation structure, without constructing to form pile body by bored concrete pile mode；
It can be effectively adapted under complex geological condition；In addition, flow-guiding channel is formed by pre-buried pipeline in the dam foundation, it in this way can be with
Effectively convenient for carrying out water conservancy diversion by flow-guiding channel in stake woods dam work progress, so that construction environment is dry work.
In addition, flow-guiding construction method described in the utility model, makes full use of stake woods described in the utility model dam knot
River is divided into two half parts of left and right and successively constructed, in the construction process, makes full use of the flow-guiding channel in the dam foundation by structure,
In combination with the Annual distribution of river withered phase and flood season, applying dryly for a woods dam is realized.The water conservancy diversion construction party of the utility model
Method has the advantages such as easy for construction, high-efficient and cheap for traditional perfusion piling method；Also, it can be very
The characteristics of combining cheuch streamflow variation well, it is ensured that the linking of entire water conservancy diversion work progress is smooth.
Detailed description of the invention
Fig. 1 is the cross-sectional view on stake woods described in the utility model dam；
Fig. 2 to Fig. 5 is that the structure on different phase corresponding stake woods dam in flow-guiding construction method described in the utility model is shown
It is intended to；
In the figure, it is marked as 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 embodiment
The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the stake woods dam described in the utility model under complex geological condition, wherein described answers
That miscellaneous geologic 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
The lonely block stone diameter of bed is big and the combined geologic condition that one or more of is unevenly distributed situation；In such multiplexed address
Under the conditions of, using traditional filling pile construction, there are constructional difficulties, and since riverbed foundation structure is poor, after final construction
The stake woods dam structural stability of formation is poor.Integrally horizontal intercept with overstating is arranged in river 1 on stake woods described in the utility model dam,
Its both ends is connected with the two sides bank in river 1 respectively；Stake woods dam includes the dam foundation 2, pile body 3 and connecting cross beam 4；The dam foundation
2 bottom is embedded within riverbed basis 5, and flow-guiding channel 6 is provided in the dam foundation 2, and the flow-guiding channel 6 is by stake
Woods above and below the dam river 1 is connected to；The pile body 3 is provided with an at least row, and every row includes the stake of more spaced and parallel settings
Body 3, connecting cross beam 4 are used to connect on the top of corresponding pile body 3；Pile body 3 and the dam foundation 2 are that the one of concrete moulding by casting is tied
Structure.
It stake woods described in the utility model dam in this way can be by the ground on entire stake woods dam by being provided with 2 structure of the dam foundation
2 connect into unified entirety, while the dam foundation 2 and pile body 3 integral structure made of concrete casting, can ensure that the dam foundation in this way
2 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 position
In the reinforcing bar in pile body 3 with the reinforcing bar that is located in the dam foundation 2 to connection；It can further improve the company between pile body 3 and the dam foundation 2 in this way
Connect fastness；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 casting 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 utility model further forms flow-guiding channel 6 in the dam foundation 2.Be arranged flow-guiding channel 6 effect be into
Row stake woods dam plays guide functions during constructing, and avoids water flow from covering the dam foundation 2, and then ensure dry work condition, is 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
The parameters such as the discharge of river in the period 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, the connecting cross beam 4 in the utility model includes middle part connecting cross beam 41 and top referring to shown in attached drawing 1
Connecting cross beam 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
The middle part of corresponding pile body 3 is connected.
Without loss of generality, the pile body 3 in the utility model is adopted as cylindric, and cross-sectional diameter is greater than 0.8m, with true
Protect the interdiction capability of pile body 3.
In addition, settable pile body 3 is located at the height of 2 or more the dam foundation no more than 8 meters for the height of pile body 3.
In addition, the pile body 3 in the utility model theoretically may be provided with it is multiple rows of, it is described multiple rows of to refer to no less than two
Row.In the specific example as shown in attached drawing 1 and attached drawing 5, to be provided with two rows of pile bodies 3.Specifically, being provided with multiple rows of pile body
When 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, upper one
A certain pile body in row is located between two pile bodies of next row；It is specific as shown in Fig. 5.In above-mentioned the case where being arranged in a staggered manner
Under, further setting is connected in two rows of pile bodies 3, the pile body 3 in previous row respectively by two sides in connecting cross beam 4 and latter row most
Two close pile bodies 3 are 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 to connect the both ends Lin Ba effectively with the bank in river.
Flow-guiding construction method described in the utility model for the stake woods dam under complex geological condition, wherein the stake woods
Dam is the above-mentioned stake woods dam described in the utility model under complex geological condition；The flow-guiding construction method includes following step
It is rapid:
Step 1: a phase water conservancy diversion: from river 1, wherein side bank heap builds a phase rock ballast cofferdam 7, keeps water 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 in the corresponding dam foundation 2 with shape
At flow-guiding channel 6；
Step 2: second-stage river diversion: one phase rock ballast cofferdam 7 of removal, 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 water flow from 6 overcurrent of flow-guiding channel in 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, carries out stake woods dam in the second stage of local construction area
The second stage of dam foundation 22 is constructed, and in the second stage of 22 work progress of the dam foundation, pre-buried pipeline is 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 2 for woods dam entirety；
Step 3: three phase water conservancy diversion: removing the second stage of rock ballast cofferdam 8, make water 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 during second-stage river diversion to 1 water flow of river 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 water flow；
Wherein, the overcurrent described above to 1 water flow of river requires to avoid water flow from covering 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 carry out water conservancy diversion by the river after intercepting or corresponding flow-guiding channel 6 and be
Streamflow can be met；It is excessive to avoid water flow and cover corresponding rock ballast cofferdam or the dam foundation 2.
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 water flow is isolated, and then form the dam foundation 2 for corresponding portion
The construction area of construction, and since water 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 water 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；Water 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 and should be ensured that and construct accordingly
In stage can effective overcurrent, and then from 2 surface overcurrent of the dam foundation after avoiding water flow from flooding the dam foundation 2, it is ensured that dry work.
In addition, in order to temporarily improve the water-retaining capacity of the dam foundation 2, 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, sandbag cofferdam 9 can also be built to carry out temporary water dash by heap on a phase dam foundation 21.
In addition, it is first laggard also the construction of pile body 3 and connecting cross beam 4 further can be divided into two parts in the utility model
Row, specifically: connecting cross beam 4 includes middle part connecting cross beam 41 and top connecting cross beam 42；In step 3, stake woods dam is carried out
The construction of pile body 3 and connecting cross beam 4 includes the following steps:
Step A, the construction of middle part connecting cross beam 41 and the pile body 3 below of middle part connecting cross beam 41 is carried out first；
Step B, sandbag cofferdam 9 is then 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 middle part connecting cross beam 41 and the pile body 3 below of middle part connecting cross beam 41
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 demand that phase to flood season flow in process is gradually increased；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 can then continue subsequent；Construction efficiency can be effectively improved, reduces subsequent construction in the process to river mistake
The requirement of streamflow.
Claims (7)
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 two 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
It (3) 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 being located in pile body (3) and the reinforcing bar that is located in the dam foundation (2) are to connection.
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 greater 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 two sides in latter row respectively；On stake woods dam
Whole both ends are respectively arranged with bank concrete guard wall (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821200217.7U CN208604552U (en) | 2018-07-27 | 2018-07-27 | For the stake woods dam under complex geological condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821200217.7U CN208604552U (en) | 2018-07-27 | 2018-07-27 | For the stake woods dam under complex geological condition |
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ID=65671302
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| CN201821200217.7U Active CN208604552U (en) | 2018-07-27 | 2018-07-27 | For the stake woods dam under complex geological condition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677880A (en) * | 2018-07-27 | 2018-10-19 | 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 |
| CN109914450A (en) * | 2019-04-03 | 2019-06-21 | 合肥市市政设计研究总院有限公司 | Replace the diversion channel and construction method of cofferdam construction in high permeability layer of sand |
-
2018
- 2018-07-27 CN CN201821200217.7U patent/CN208604552U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677880A (en) * | 2018-07-27 | 2018-10-19 | 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 |
| CN108677880B (en) * | 2018-07-27 | 2024-03-19 | 中国电建集团成都勘测设计研究院有限公司 | Pile-forest dam for complex geological conditions |
| CN109914450A (en) * | 2019-04-03 | 2019-06-21 | 合肥市市政设计研究总院有限公司 | Replace the diversion channel and construction method of cofferdam construction in high permeability layer of sand |
| CN109914450B (en) * | 2019-04-03 | 2024-04-30 | 合肥市市政设计研究总院有限公司 | Diversion channel for alternate cofferdam construction in sand layer with strong water permeability and construction method |
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