CN202610823U - Dam foundation deep groove processing structure - Google Patents
Dam foundation deep groove processing structure Download PDFInfo
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- CN202610823U CN202610823U CN 201220172902 CN201220172902U CN202610823U CN 202610823 U CN202610823 U CN 202610823U CN 201220172902 CN201220172902 CN 201220172902 CN 201220172902 U CN201220172902 U CN 201220172902U CN 202610823 U CN202610823 U CN 202610823U
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- loaded plate
- dam foundation
- dam
- deep groove
- deep trouth
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Abstract
The utility model relates to a dam foundation deep groove processing structure. The utility model aims to provide the dam foundation deep groove processing structure and a construction method thereof. The dam foundation deep groove is processed; the dam construction is not influenced; the deep groove processing and dam construction are performed synchronously; the problems of dam foundation stability, stress, deformation and seepage prevention caused by sand gravel-cobble in the deep groove are fundamentally solved; the processing construction period of the dam foundation deep groove can be shortened; and the engineering benefit is exerted in advance. The utility model adopts the technical scheme that the dam foundation deep groove processing structure is characterized in that a bearing plate is arranged across the dam foundation deep groove; a dam body is arranged at the upper part of the bearing plate; a construction corridor is reserved at the top of the bearing plate; a grouting pipe communicated with the construction corridor and the bottom of the bearing plate is embedded in the bearing plate; and deep groove replacing concrete is backfilled in the dam foundation deep groove at the bottom of the bearing plate.
Description
Technical field
The utility model relates to a kind of dam foundation deep trouth Processing Structure and job practices thereof.Be applicable to that there is the engineering of deep trouth in the dam foundation, solve effectively that the Dam Base Surface antiskid that deep trouth causes is stable, the problem of dam foundation stress, sedimentation and deformation and seepage prevention of dam founda, and can shorten deep trouth greatly and handle the shared straight line duration, accelerate the construction period.
Background technology
In the engineering of some complex-terrain geological conditionss, often there is deep trouth in position, the riverbed dam foundation, and back-up sand ovum gravel, and, dam foundation stress stable to the dam antiskid, sedimentation and deformation and seepage prevention of dam founda are all unfavorable.Processing to this deep trouth at present mainly contains open cut total replacement method and consolidation grouting method; The former adopts the method for open cut that sand ovum gravel in the deep trouth is all excavated and replaces concrete; Can effectively solve dam foundation stability, stress and antiseepage problem; But dam body construction in top just can be carried out after must waiting deep trouth all to finish dealing with, and long processing period influences the performance of construction period and project benefit; The latter does not excavate sand ovum gravel in the deep trouth; Only it being carried out consolidation grouting reinforces; Employing the method is handled, and the consolidation effect of consolidation grouting is difficult to guarantee, antiskid is stable, all there are uncertain factor in dam foundation stress and seepage prevention of dam founda; Degree of safety is little, is not suitable for high dam and the higher engineering of engineering grade.
Summary of the invention
The technical problem that the utility model will solve is: to the problem of above-mentioned existence; A kind of dam foundation deep trouth Processing Structure and job practices thereof are provided, when handling dam foundation deep trouth, do not influence the dam body construction on it; Deep trouth is handled and the dam body construction is carried out synchronously; Can fundamentally solve sand ovum gravel causes in the deep trouth dam foundation stability, stress, distortion and antiseepage problem, can shorten deep trouth again and handle the duration, bring into play project benefit in advance.
The technical scheme that the utility model adopted is: a kind of dam foundation deep trouth Processing Structure; It is characterized in that: stride the dam foundation deep trouth loaded plate is set; Loaded plate top is dam body and reserves construction gallery at the loaded plate top, the grout pipe bottom the inner pre-buried connection construction gallery of this loaded plate and the loaded plate; Backfill deep trouth displacement concrete in the dam foundation deep trouth of loaded plate bottom.
At loaded plate provided upstream antiseepage retaining structure.
The said loaded plate sole arrangement structure that overarches is provided with keyway along the upstream and downstream direction.
Said loaded plate is a reinforced concrete structure, and receives to be equipped with on the reinforcing bar monitoring instrument in loaded plate inside.
Said loaded plate is fixed on the basement rock through support anchor rod.
The beneficial effect of the utility model is:
1, sand ovum gravel in the dam foundation deep trouth is all excavated, and with the concrete displacement, thereby dam foundation stability, stress, sedimentation and antiseepage problem fundamentally solved, no engineering safety hidden danger;
2, stride dam foundation deep trouth and be provided with loaded plate, loaded plate can independently bear dam body construction period load on it, can begin top dam body construction after the loaded plate construction is accomplished; And after needn't waiting for that the completion of displacement concrete is dug in sand ovum gravel hole in the dam foundation deep trouth; The top dam body of constructing again in the time of the dam body of construction top, carries out the excavation and the supporting of sand ovum gravel in the loaded plate base channel; Shorten deep trouth and handle the duration, bring into play project benefit in advance;
3, the loaded plate sole arrangement structure that overarches is provided with keyway along the upstream and downstream direction, helps the grouting of structure stress and later stage;
4, the loaded plate upper reaches are provided with the antiseepage retaining structure, so that form the dry work condition;
5, loaded plate inside has been buried monitoring instruments such as reinforcement stresses meter, thermometer and multiple position extensometer underground, can understand its duty according to the monitored data of loaded plate in the work progress, guarantees construction safety.
Description of drawings
Fig. 1 is the layout plan of the utility model.
Fig. 2 is the representative section figure of the utility model.
Fig. 3 is loaded plate reinforcing bar and a monitoring instrument arrangement diagram in the utility model.
The specific embodiment
Like Fig. 1, shown in Figure 2, present embodiment is the design and its job practices that a kind of dam foundation deep trouth is handled.Comprise in this example and cross over the loaded plate 3 that dam foundation deep trouth 1 is provided with, this loaded plate is fixedly connected with basement rock 2 through support anchor rod 9.Loaded plate 3 tops are dam body 5, and are reserved with construction gallery 7 at the top of loaded plate 3, and loaded plate inside is embedded with the grout pipe 8 that is communicated with construction gallery 7 and loaded plate 3 bottoms.At loaded plate 3 upper reaches antiseepage retaining structure 4 is set, so that the dry work condition is provided for downstream constructions area.Backfill deep trouth displacement concrete 6 in the dam foundation deep trouth 1 of loaded plate 3 bottoms.
Wherein loaded plate 3 is a reinforced concrete structure, can independent support top dam body 5 construction period load, and the loaded plate bottom surface should be arranged to domes, is provided with keyway 12 along the upstream and downstream direction, helps the grouting of structure stress and later stage.As shown in Figure 3, establish at the key position of the inner reinforcing bar 10 of loaded plate 3 in this example and bury monitoring instrument 11 (monitoring facilitieses such as reinforcement stresses meter, thermometer and multiple position extensometer can be understood its duty according to the monitored data of loaded plate in the work progress) underground.
The concrete job practices of present embodiment is following:
1) according to geological prospecting achievement (scope of deep trouth 1, trend); And take all factors into consideration the hinge entire arrangement; Carry out steel concrete loaded plate 3 layouts and structural analysis, confirm physical dimension and arrangement of reinforcement, physical dimension need satisfy the requirement of bearing dam body 5 working load on it; Arrangement of reinforcement quantity is still needed to satisfy to limit and is split requirement, and loaded plate 3 should be provided with keyway 12 along the upstream and downstream direction;
2) carry out the excavation and the supporting of loaded plate 3 foundation planes;
3) reinforcing bar 10 of installation loaded plate, monitoring instrument 11 etc., and build loaded plate 3 concrete.Loaded plate 3 bottom surfaces should be arranged to domes, help the grouting of structure stress and later stage, and construction gallery 7 is reserved at loaded plate 3 tops, and at loaded plate 3 inner pre-embedment grouting pipes 8;
4) carry out the construction of top dam body 5;
5) construction loaded plate 3 upper reaches antiseepage retaining structures 4;
The hole of 6) carrying out sand ovum gravel in the loaded plate 3 bottom dam foundation deep trouths 1 is dug and supporting, can carry out simultaneously with the construction of top dam body 5;
7) built-in the gaining in hole filled out concrete;
8) carry out backfill and fixed (contact) grouting through 8 pairs of loaded plate 3 bottoms of grout pipe, so that combine tight between the concrete of loaded plate 3 and step 7 displace.
Claims (5)
1. dam foundation deep trouth Processing Structure; It is characterized in that: stride dam foundation deep trouth (1) loaded plate (3) is set; Loaded plate (3) top is dam body (5) and reserves construction gallery (7) at loaded plate (3) top, the grout pipe (8) bottom the inner pre-buried connection construction gallery (7) of this loaded plate and the loaded plate (3); The interior backfill deep trouth displacement of loaded plate (3) bottom dam foundation deep trouth (1) concrete (6).
2. dam foundation deep trouth Processing Structure according to claim 1 is characterized in that: at loaded plate (3) provided upstream antiseepage retaining structure (4).
3. dam foundation deep trouth Processing Structure according to claim 1 and 2 is characterized in that: said loaded plate (3) the sole arrangement structure that overarches is provided with keyway (12) along the upstream and downstream direction.
4. dam foundation deep trouth Processing Structure according to claim 3 is characterized in that: said loaded plate (3) is a reinforced concrete structure, and monitoring instrument (11) is installed on the inner reinforcing bar of loaded plate (3) (10).
5. dam foundation deep trouth Processing Structure according to claim 1 is characterized in that: said loaded plate (3) is fixed on the basement rock (2) through support anchor rod (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220172902 CN202610823U (en) | 2012-04-23 | 2012-04-23 | Dam foundation deep groove processing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220172902 CN202610823U (en) | 2012-04-23 | 2012-04-23 | Dam foundation deep groove processing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202610823U true CN202610823U (en) | 2012-12-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220172902 Expired - Lifetime CN202610823U (en) | 2012-04-23 | 2012-04-23 | Dam foundation deep groove processing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202610823U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619234A (en) * | 2012-04-23 | 2012-08-01 | 中国水电顾问集团华东勘测设计研究院 | Dam foundation deep groove processing structure and construction method thereof |
-
2012
- 2012-04-23 CN CN 201220172902 patent/CN202610823U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619234A (en) * | 2012-04-23 | 2012-08-01 | 中国水电顾问集团华东勘测设计研究院 | Dam foundation deep groove processing structure and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |