CN204738326U - Dam foundation abrupt slope position fault replacement structure - Google Patents

Dam foundation abrupt slope position fault replacement structure Download PDF

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Publication number
CN204738326U
CN204738326U CN201520484241.8U CN201520484241U CN204738326U CN 204738326 U CN204738326 U CN 204738326U CN 201520484241 U CN201520484241 U CN 201520484241U CN 204738326 U CN204738326 U CN 204738326U
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China
Prior art keywords
dam foundation
abrupt slope
tomography
space
hollow out
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CN201520484241.8U
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Chinese (zh)
Inventor
饶宏玲
周钟
王仁坤
唐虎
潘晓红
唐忠敏
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PowerChina Chengdu Engineering Co Ltd
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PowerChina Chengdu Engineering Co Ltd
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Priority to CN201520484241.8U priority Critical patent/CN204738326U/en
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Abstract

The utility model discloses a hydraulic and hydroelectric engineering structure, especially a dam foundation abrupt slope position fault replacement structure. The utility model provides a reduce the dam foundation abrupt slope position fault replacement structure of excavation volume, including dam foundation abrupt slope and the concrete replacement body, the fault on dam foundation abrupt slope and influence area department and be provided with and wholly excavate the space includes still that the part is drawn to hollow out within a definite time, the part is drawn to hollow out and has been excavated towards the fault influence area extension on dam foundation abrupt slope from the whole space of excavating within a definite time, the concrete replacement body build whole excavate the space draw with the part hollow out within a definite time in. This replacement structure has been because between having adopted the part to draw to hollow out, this make whole excavate the space needn't be too big, just so reduced a large amount of engineering volumes, not only reduced the time limit for a project, also make the side slope in construction time stability improvement.

Description

Position, dam foundation abrupt slope tomography replacing structure
Technical field
The utility model relates to a kind of Hydraulic and Hydro-Power Engineering structure, the tomography replacing structure at position, especially a kind of dam foundation abrupt slope.
Background technology
At present, the hydroelectric project of carrying out building at high-mountain gorge areas gets more and more, and for ensureing engineering safety, dam foundation tomography need carry out excavation displacement.By traditional excavation displacement format, for making concrete replacement body have good stress condition, should be vertical with tomography and stride across tomography bottom concrete replacement body, whole replacement is that top (concordant with domatic) is large, and bottom is little, and section is trapezoidal structure.If dam foundation side slope is comparatively steep, such excavation displacement format will dig out a large amount of good rock mass of the dam foundation, and brings larger excavation and concrete replacement engineering quantity, strengthens excavation slope height, strengthens the difficulty that Construction Stage of Slop Engineering is stable.Therefore, need to study a kind of excavation displacement format adapting to position, abrupt slope dam foundation tomography.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of position, dam foundation abrupt slope tomography replacing structure reducing excavation and concrete replacement engineering quantity.
The utility model solves position, the dam foundation abrupt slope tomography replacing structure that its technical problem adopts, comprise dam foundation abrupt slope and concrete replacement body, the tomography on dam foundation abrupt slope and influence zone place thereof are provided with overall excavation space, also comprise between local draws and hollow out, described local draw and hollow out between fault influence zone to dam foundation abrupt slope from the excavation face in entirety excavation space extend; Described concrete replacement body is cast in overall excavation space and local draw and hollow out.
Further, the section in overall excavation space is right triangular shape, and the hypotenuse of right-angled triangle is concordant with domatic.
Further, also comprise locked anchor bar, described locked anchor bar is arranged on dam foundation abrupt slope, and locked anchor bar is laid with two rows, is positioned at outside the overall aperture lines excavating space.
Further, also comprise support anchor rod, described support anchor rod is laid in overall excavation space and local is drawn on the inwall rock mass between hollowing out, and is embedded in described concrete replacement body.
Further, described support anchor rod is exposed at the outer 50cm of rock mass.
Further, along described concrete replacement body border, steel bar stress is had in replacement internal placement.
Further, contact grouting layer is provided with between described concrete replacement body and the basement rock on dam foundation abrupt slope.
The beneficial effects of the utility model are: this replacing structure is owing to have employed between local draws and hollow out, and this makes overall excavation space need not be too large, which reduces a large amount of engineering quantitys, not only reduces the duration, also make side slope improve in construction period stability.The rectangular triangle of section in overall excavation space, this makes excavation can to go directly fault influence zone, and the hypotenuse of right-angled triangle and the domatic concordant of abrupt slope, its shape meets the feature on abrupt slope, and this right-angled triangle section can make excavated volume reach minimum.Locked anchor bar can be adopted before excavation to improve the stability on abrupt slope, for excavation creates favorable conditions.Overall excavation space and local are drawn to hollow out in an excavation face and are arranged support anchor rod, anchor pole is exposed at the outer 50cm of rock mass, anchor pole can strengthen on the one hand the stability of excavation face, concrete replacement body can be made on the other hand to be fixed on more closely in overall excavation space and local draw and hollow out.Steel bar stress can be arranged in the inside of concrete replacement body, will greatly strengthen its bearing capacity after displacement concrete and rebar combines.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Component, position and numbering in figure: dam foundation abrupt slope 1, tomography and influence zone 2 thereof, overall excavation space 3, local draw and hollow out between 4, locked anchor bar 5, support anchor rod 6.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the utility model comprises dam foundation abrupt slope 1 and concrete replacement body, the tomography on dam foundation abrupt slope 1 and influence zone 2 place thereof are provided with overall excavation space 3, also comprise local draw hollow out between 4, described local 4 to extend to the tomography on dam foundation abrupt slope 1 and influence zone 2 thereof between drawing and hollowing out from the excavation face in entirety excavation space 3; Described concrete replacement body be cast in overall excavation space 3 and local draw hollow out between in 4.Overall excavation space 3 eliminates most of tomography and influence zone 2 thereof, then based on entirety excavation space 3, carry out local to draw and dig, formed local draw hollow out between 4, tomography and influence zone 2 thereof 4 have been dug out between drawing and hollowing out completely in overall excavation space 3 and local, and then to entirety excavation space 3 and local draw hollow out between carry out concreting in 4, thus form concrete replacement body, concrete replacement body effectively displaces tomography and influence zone 2 thereof, makes the dam foundation quality at position, dam foundation abrupt slope 1 meet the requirement of dam to basis.Local 4 is realize on the basis in entirety excavation space 3 between drawing and hollowing out, and this makes the excavated volume in overall excavation space 3 reduce, and the specific aim of whole engineering is stronger, not only reduces the duration, also makes side slope improve in construction period stability.
In order to reduce excavated volume, as shown in Figure 1, the section in overall excavation space 3 is right triangular shape, the hypotenuse of right-angled triangle and the domatic concordant of dam foundation abrupt slope 1.Right-angled triangle is characterized in vertical cut, and the entirety excavation space 3 of right-angled triangle excavation is by vertical cut face, horizontal excavation face and domaticly form, and this mode can drive straight on to tomography and influence zone 2 thereof, while achieving the goal, reduce excavated volume greatly.
In order to ensure the stability excavated, as shown in Figure 1, also comprise locked anchor bar 5, described locked anchor bar 5 is arranged on dam foundation abrupt slope 1, and locked anchor bar 5 is laid with two rows, is positioned at outside the overall aperture lines excavating space 3.
In order to increase the stability of excavation slope, the combination of Concrete Structure replacement and rock mass, as shown in Figure 1, also comprise support anchor rod 6, described support anchor rod 6 be laid in overall excavation space 3 and local draw hollow out between 4 excavation face on, be exposed at the outer 50cm of rock mass, will embed wherein after displacement concreting.Support anchor rod 6 connects rock mass and concrete replacement body, makes whole replacing structure more reliable.
Between described concrete replacement body and the basement rock on dam foundation abrupt slope 1, contact grouting layer is set.
Concrete, before carrying out replacement concreting, along overall excavation space 3 and local draw hollow out between 4 periphery in length and breadth to steel bar stress, will greatly strengthen its bearing capacity after displacement concrete and rebar combines.
Said structure is recommended to construct in the following ways:
1, outside aperture lines, arrange two row's locked anchor bar.
2, carry out adopting right-angled triangle excavated section to carry out the Excavation blasting of overall excavation.
3, carry out supporting to the excavation face after entirety excavation according to stability of slope situation, the anchor pole of supporting exposes excavation face 50cm, and the concrete of building to make the later stage and rock mass have good combination.
4, the tomography do not dug out entirety and influence zone thereof are drawn and are dug, and guarantee all to remove the soft rock zone being not suitable as Dam Base Surface.Meanwhile, according to stability of slope situation, arrange the supporting measure of excavation face, the anchor pole of supporting exposes excavation face 50cm.
5, the steel bar stress in concrete replacement body is arranged.
6, displacement concreting is carried out.
7, the contact grouting of putting concrete and intrusion contact surface is carried out.

Claims (7)

1. position, dam foundation abrupt slope tomography replacing structure, comprise dam foundation abrupt slope (1) and concrete replacement body, the tomography on dam foundation abrupt slope (1) and influence zone (2) place thereof are provided with overall excavation space (3), it is characterized in that: also comprise local draw hollow out between (4), between described local is drawn and hollowed out, (4) extend to the tomography of dam foundation abrupt slope (1) and influence zone (2) thereof from the excavation face of entirety excavation space (3); Described concrete replacement body be cast in overall excavation space (3) and local draw hollow out between in (4).
2. position, dam foundation abrupt slope as claimed in claim 1 tomography replacing structure, is characterized in that: the section of overall excavation space (3) is right triangular shape, the hypotenuse of right-angled triangle and the domatic concordant of dam foundation abrupt slope (1).
3. position, dam foundation abrupt slope as claimed in claim 1 tomography replacing structure, it is characterized in that: also comprise locked anchor bar (5), described locked anchor bar (5) is arranged on dam foundation abrupt slope (1), locked anchor bar (5) is laid with two rows, is positioned at outside the overall aperture lines excavating space (3).
4. position, dam foundation abrupt slope as claimed in claim 1 tomography replacing structure, it is characterized in that: also comprise support anchor rod (6), described support anchor rod (6) be laid in overall excavation space (3) and local draw hollow out between (4) inwall on, and to be embedded in described concrete replacement body.
5. position, dam foundation abrupt slope as claimed in claim 4 tomography replacing structure, is characterized in that: described support anchor rod (6) is exposed at the outer at least 50cm of rock mass.
6. position, dam foundation abrupt slope as claimed in claim 1 tomography replacing structure, is characterized in that: along described concrete replacement body border, have steel bar stress in concrete replacement body internal placement.
7. position, the dam foundation abrupt slope tomography replacing structure as described in claim as arbitrary in claim 1 to 6, is characterized in that: be provided with contact grouting layer between the basement rock of described concrete replacement body and dam foundation abrupt slope (1).
CN201520484241.8U 2015-07-07 2015-07-07 Dam foundation abrupt slope position fault replacement structure Active CN204738326U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520484241.8U CN204738326U (en) 2015-07-07 2015-07-07 Dam foundation abrupt slope position fault replacement structure

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Application Number Priority Date Filing Date Title
CN201520484241.8U CN204738326U (en) 2015-07-07 2015-07-07 Dam foundation abrupt slope position fault replacement structure

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CN204738326U true CN204738326U (en) 2015-11-04

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105780805A (en) * 2016-03-29 2016-07-20 中国电建集团成都勘测设计研究院有限公司 Tower foundation treatment structure in multi-purpose tunnel bank-tower water inlet combined arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105780805A (en) * 2016-03-29 2016-07-20 中国电建集团成都勘测设计研究院有限公司 Tower foundation treatment structure in multi-purpose tunnel bank-tower water inlet combined arrangement

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