CN205012284U - Build dam dam foundation seepage prevention structure on overburden - Google Patents
Build dam dam foundation seepage prevention structure on overburden Download PDFInfo
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- CN205012284U CN205012284U CN201520778746.5U CN201520778746U CN205012284U CN 205012284 U CN205012284 U CN 205012284U CN 201520778746 U CN201520778746 U CN 201520778746U CN 205012284 U CN205012284 U CN 205012284U
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Abstract
The utility model discloses a be convenient for be under construction and the lower build dam dam foundation seepage prevention structure on overburden of cost. This build dam dam foundation seepage prevention structure on overburden pours wall section and grout compartment including the suspension type, the suspension type is pour the wall section and is set up in the overburden, and its upper end links to each other with the irrigation gallery, the grout compartment sets up in overburden and basement rock, and build the wall section with the suspension type respectively and the basement rock is continuous at the lower extreme both ends on it. Compare with the seepage prevention structure of the current totally closed concrete cut -pff wall of adoption, this seepage prevention structure mainly pours the wall section by the suspension type and the grout compartment is constituteed, and engineering cost is lower, only the suspension type is pour the wall section and need be pour, and it is shallow to pour the degree of depth, and the construction degree of difficulty is less, does benefit to to guarantee to pour the quality, be under construction to the grout compartment through the irrigation gallery, construction convenience, and grouting construction can go on with filling of embankment dam dam body simultaneously, it is short that the construction that makes whole seepage prevention structure occupies the straight line time limit for a project.
Description
Technical field
The utility model belongs to Hydraulic and Hydro-Power Engineering field, is specifically related to one and is built in supratectal dam foundation leakage preventing structure.
Background technology
In deep covering layer earth and rockfill dam, concrete cut is comparatively reliable seepage prevention of dam founda structure.Existing seepage prevention of dam founda structure is generally the totally-enclosed concrete cut arranged in covering layer, generally embeds weak weathered rocks 0.5 ~ 1.0m at the bottom of this impervious wall wall, and its construction costs is general higher; And the covering layer degree of depth is larger, unit wall cost is higher, and difficulty of construction is larger, and wall quality is also difficult to ensure.In addition, existing seepage prevention of dam founda structure needs to complete construction before earth and rockfill dam dam embankment, and the construction period is longer, takies the straight line duration.
Utility model content
The technical problems to be solved in the utility model be to provide a kind of constructability and cost lower be built in supratectal dam foundation leakage preventing structure.
The utility model solves the technical scheme that its technical problem adopts: be built in supratectal dam foundation leakage preventing structure, comprise suspension type and water walling section and grout compartment; Described suspension type is watered walling section and is arranged in covering layer, and its upper end is connected with irrigation gallery; Described grout compartment is arranged in covering layer and basement rock, and its upper and lower side two ends are watered walling section respectively and are connected with basement rock with suspension type.
Further, described suspension type waters in walling section the pre-embedment grouting pipe be provided with for construction grouting section, and the upper end of described pre-embedment grouting pipe and the inner space of irrigation gallery, lower end are positioned at the bottom that suspension type waters walling section.
Further, described pre-embedment grouting pipe comprises spaced two rows, often arrange pre-embedment grouting pipe and all water along suspension type the pre-embedment grouting pipe composition that walling segment length direction is arranged side by side primarily of more than two, and the pre-embedment grouting pipe in two rows shifts to install.
Further, the bottom that described suspension type waters walling section stretches in the relative water resisting layer in covering layer; Described grout compartment comprises blanket grouting section and basement rock grout compartment; Described basement rock grout compartment is arranged in basement rock; The bottom that top and the suspension type of described blanket grouting section water walling section is connected, and the lower end of blanket grouting section to embed in basement rock and links together with basement rock grout compartment.
Further, described suspension type is watered walling section and is formed by concreting, and described grout compartment is formed by curtain grouting.
Further, be also provided with the grout hole for blanket grouting section of constructing in described covering layer, the top of described grout hole and the inner space of irrigation gallery, bottom are positioned at basement rock.
Further, described blanket grouting section is watered pre-embedment grouting pipe in walling section and intratectal grout hole by suspension type and is in the milk and is formed; Described grout hole comprises and lays respectively at two rows that suspension type waters walling section upstream and downstream side, often arranges grout hole and all waters along suspension type the grout hole composition that walling segment length direction is arranged side by side primarily of two or more.
The beneficial effects of the utility model are: compared with the leakage preventing structure of the totally-enclosed concrete cut of existing employing, and this leakage preventing structure waters walling section and grout compartment composition primarily of suspension type, and construction costs is lower; Only suspension type waters walling section needs to build, and build depth as shallow, difficulty of construction is less, is beneficial to guarantee pouring quality; By irrigation gallery, grout compartment is constructed, easy construction, and grouting construction can carry out with filling of earth and rockfill dam dam body simultaneously, makes the construction of whole leakage preventing structure take the straight line duration short.
Accompanying drawing explanation
Fig. 1 is enforcement structural representation of the present utility model;
Be labeled as in figure: suspension type waters walling section 1, pre-embedment grouting pipe 11, grout compartment 2, blanket grouting section 21, grout hole 211, basement rock grout compartment 22, covering layer 3, relative water resisting layer 31, foundation plane 32, irrigation gallery 4, basement rock 5, base cover boundary line 6.
In figure the direction of arrow be along river to.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, be built in supratectal dam foundation leakage preventing structure, comprise suspension type and water walling section 1 and grout compartment 2; Described suspension type is watered walling section 1 and is arranged in covering layer 3, and its upper end is connected with irrigation gallery 4; Described grout compartment 2 is arranged in covering layer 3 and basement rock 5, and its upper and lower side two ends are watered walling section 1 respectively and are connected with basement rock 5 with suspension type.Wherein, suspension type waters the impervious wall wall section that walling section 1 is pouring construction, and its degree of depth is less than the degree of depth of covering layer 3, and construction costs is lower, and difficulty of construction is relatively little; Construction suspension type when watering walling section 1, is usually bored a row or multi-row pouring hole downwards by foundation plane 32 and is built covering layer 3 in, or is excavated in covering layer 3 downwards by foundation plane 32 and build groove and build.Suspension type is watered after walling section 1 constructed, the irrigation gallery 4 watering walling section 1 upper end with suspension type and be connected is set usually on suspension type waters directly over walling section 1 foundation plane 32, irrigation gallery 4 can make the filling construction of the construction of grout compartment 2 and earth and rockfill dam dam body synchronously carry out after having constructed, constructability operation and save the duration.Grout compartment 2 is formed by grouting construction, is usually arranged in covering layer 3 that suspension type waters walling section less than 1 and in basement rock 5; During construction grouting section 2, usually in covering layer 3, bore a row or multi-row grout hole downwards by foundation plane 32 and be in the milk, or be in the milk by arranging grout pipe in covering layer 3; During grouting construction, make the upper end of grout compartment 2 and suspension type water walling section 1 and carry out certain overlap joint, the lower end of grout compartment 2 is embedded in basement rock 5.
For the ease of the construction of grout compartment 2, again as shown in Figure 1, described suspension type waters in walling section 1 pre-embedment grouting pipe 11 be provided with for construction grouting section 2, the upper end of described pre-embedment grouting pipe 11 and the inner space of irrigation gallery 4, the lower end of pre-embedment grouting pipe 11 is positioned at the bottom that suspension type waters walling section 1.Because the inner space of the upper end of pre-embedment grouting pipe 11 and irrigation gallery 4, so the grouting construction of grout compartment 2 can carry out in irrigation gallery 4, do not interfere with each other with filling of earth and rockfill dam dam body, monitor the operating condition of this leakage preventing structure by irrigation gallery 4 after completion, and by pre-embedment grouting pipe 11 pairs of grout compartment 2 supplementary irrigations.Preferably, described pre-embedment grouting pipe 11 comprises spaced two rows, often arranges pre-embedment grouting pipe 11 and all waters along suspension type the pre-embedment grouting pipe 11 that walling section 1 length direction is arranged side by side primarily of more than two and form, and two arrange in pre-embedment grouting pipe 11 shift to install.
As a kind of preferred version of the present utility model, more as shown in Figure 1, the bottom that described suspension type waters walling section 1 stretches in the relative water resisting layer 31 in covering layer 3; Described grout compartment 2 comprises blanket grouting section 21 and basement rock grout compartment 22; Described basement rock grout compartment 22 is arranged in basement rock 5; The bottom that top and the suspension type of described blanket grouting section 21 water walling section 1 is connected, and the lower end of blanket grouting section 21 to embed in basement rock 5 and links together with basement rock grout compartment 22.The bottom that suspension type waters walling section 1 stretches in relative water resisting layer 31, covering layer 3 part that can be higher to permeability rate preferably carries out antiseepage, can either combine with grout compartment 2 simultaneously and meet the antiseepage requirement of the deep covering layer dam foundation, the degree of depth making again suspension type water walling section 1 is in rational scope, be beneficial to and reduce engineering cost further, and save the duration.Blanket grouting section 21 can either ensure that grout compartment 2 and suspension type water the connection effect of walling section 1, can ensure again the anti-seepage effect of grout compartment 2 in covering layer 3; Basement rock grout compartment 22 can ensure the connection effect of grout compartment 2 and basement rock 5.Preferably, described suspension type is watered walling section 1 and is formed by concreting, and described grout compartment 2 is formed by curtain grouting.
In order to improve the anti-seepage effect of grout compartment 2 in covering layer 3 and grout compartment 2 waters the connection effect of walling section 1 with suspension type, again as shown in Figure 1, also be provided with the grout hole 211 for blanket grouting section 21 of constructing in described covering layer 3, the top of described grout hole 211 and the inner space of irrigation gallery 4, bottom are positioned at basement rock 5.Concrete, described blanket grouting section 21 is watered the pre-embedment grouting pipe 11 in walling section 1 and the grout hole 211 in covering layer 3 by suspension type and is in the milk and is formed; Described grout hole 211 comprises and lays respectively at two rows that suspension type waters walling section 1 upstream and downstream side, often arranges grout hole 211 and all waters along suspension type the grout hole 211 that walling section 1 length direction is arranged side by side primarily of two or more and form; Usually, the grout hole 211 in two rows shifts to install.The thickness of blanket grouting section 21 can not only be strengthened by two row's grout pipes 211, improve its anti-seepage effect, the connecting length that blanket grouting section 21 and suspension type water walling section 1 can also be increased simultaneously.
For the above-mentioned method being built in supratectal dam foundation leakage preventing structure of constructing, comprise the following steps:
A, in covering layer 3, arrange pouring hole downwards by foundation plane 32, the degree of depth of pouring hole is less than the degree of depth of covering layer 3; Pre-embedment grouting pipe 11 is set in pouring hole, and makes the lower end of pre-embedment grouting pipe 11 be in the bottom of pouring hole; Arrange in the process of pouring hole, hole first in batches, then all pouring holes are communicated with; Usual pouring hole makes to build back suspended bottom of watering walling section 1 and is positioned at relative water resisting layer 31 till being drilled in the relative water resisting layer 31 in covering layer 3; General employing concreting suspension type waters walling section 1;
B, in pouring hole, build suspension type water walling section 1, the irrigation gallery 4 watering walling section 1 upper end and be connected is set after having built on foundation plane 32, and makes the upper end of pre-embedment grouting pipe 11 and the inner space of irrigation gallery 4 with suspension type;
C, to be in the milk in covering layer 3 and basement rock 5 by pre-embedment grouting pipe 11, to form upper and lower side two ends and water the grout compartment 2 that walling section 1 is connected with basement rock 5 respectively with suspension type; General, curtain grouting is carried out by pre-embedment grouting pipe 11, in basement rock 5, grouting forms basement rock grout compartment 22, and in covering layer 3, grouting forms that top is connected with the bottom that suspension type waters walling section 1, lower end covers boundary line 6 through base and to embed in basement rock 5 and the blanket grouting section 21 linked together with basement rock grout compartment 22.
Preferably, step b also comprises, the grout hole 211 being positioned at basement rock 5 bottom two rows is set downwards by the bottom of irrigation gallery 4, two row's grout holes 211 lay respectively at suspension type and water walling section 1 upstream and downstream side, often arrange grout hole 211 all to water along suspension type the grout hole 211 that walling section 1 length direction is arranged side by side primarily of two or more and form, two arrange in grout hole 211 mutual dislocation;
Step c also comprises, curtain grouting is carried out by grout hole 211 to covering layer 3 while being in the milk in covering layer 3 by pre-embedment grouting pipe 11, make the grouting slurries entered in covering layer 3 be combined together to form integrally-built blanket grouting section 21, and the connecting length making blanket grouting section 21 and suspension type water walling section 1 is more than or equal to 10 ~ 20m.
Claims (7)
1. be built in supratectal dam foundation leakage preventing structure, it is characterized in that: comprise suspension type and water walling section (1) and grout compartment (2); Described suspension type is watered walling section (1) and is arranged in covering layer (3), and its upper end is connected with irrigation gallery (4); Described grout compartment (2) is arranged in covering layer (3) and basement rock (5), and its upper and lower side two ends are watered walling section (1) respectively and are connected with basement rock (5) with suspension type.
2. be built in supratectal dam foundation leakage preventing structure as claimed in claim 1, it is characterized in that: described suspension type waters in walling section (1) pre-embedment grouting pipe (11) be provided with for construction grouting section (2), the upper end of described pre-embedment grouting pipe (11) and the inner space of irrigation gallery (4), lower end are positioned at the bottom that suspension type waters walling section (1).
3. be built in supratectal dam foundation leakage preventing structure as claimed in claim 2, it is characterized in that: described pre-embedment grouting pipe (11) comprises spaced two rows, often arrange pre-embedment grouting pipe (11) and all water along suspension type pre-embedment grouting pipe (11) composition that walling section (1) length direction is arranged side by side primarily of more than two, and the pre-embedment grouting pipe (11) in two rows shifts to install.
4. as described in claim 1,2 or 3, be built in supratectal dam foundation leakage preventing structure, it is characterized in that: the bottom that described suspension type waters walling section (1) stretches in the relative water resisting layer (31) in covering layer (3); Described grout compartment (2) comprises blanket grouting section (21) and basement rock grout compartment (22); Described basement rock grout compartment (22) is arranged in basement rock (5); The bottom that top and the suspension type of described blanket grouting section (21) water walling section (1) is connected, and the lower end of blanket grouting section (21) to embed in basement rock (5) and links together with basement rock grout compartment (22).
5. be built in supratectal dam foundation leakage preventing structure as claimed in claim 4, it is characterized in that: described suspension type is watered walling section (1) and formed by concreting, described grout compartment (2) is formed by curtain grouting.
6. be built in supratectal dam foundation leakage preventing structure as claimed in claim 5, it is characterized in that: be also provided with the grout hole (211) for blanket grouting section (21) of constructing in described covering layer (3), the top of described grout hole (211) and the inner space of irrigation gallery (4), bottom are positioned at basement rock (5).
7. be built in supratectal dam foundation leakage preventing structure as claimed in claim 6, it is characterized in that: described blanket grouting section (21) waters the pre-embedment grouting pipe (11) in walling section (1) by suspension type and the grouting of the grout hole (211) in covering layer (3) is formed; Described grout hole (211) comprises and lays respectively at two rows that suspension type waters walling section (1) upstream and downstream side, often arranges grout hole (211) and all waters along suspension type grout hole (211) composition that walling section (1) length direction is arranged side by side primarily of two or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520778746.5U CN205012284U (en) | 2015-10-09 | 2015-10-09 | Build dam dam foundation seepage prevention structure on overburden |
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| CN201520778746.5U CN205012284U (en) | 2015-10-09 | 2015-10-09 | Build dam dam foundation seepage prevention structure on overburden |
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| CN205012284U true CN205012284U (en) | 2016-02-03 |
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| CN201520778746.5U Active CN205012284U (en) | 2015-10-09 | 2015-10-09 | Build dam dam foundation seepage prevention structure on overburden |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155472A (en) * | 2015-10-09 | 2015-12-16 | 中国电建集团成都勘测设计研究院有限公司 | Dam foundation anti-seepage structure of deep overlying layer earth-rock dam and construction method of dam foundation anti-seepage structure |
| CN105821806A (en) * | 2016-05-17 | 2016-08-03 | 中国电建集团成都勘测设计研究院有限公司 | Water retaining dam united anti-seepage structure |
| CN106120655A (en) * | 2016-06-27 | 2016-11-16 | 中国葛洲坝集团第二工程有限公司 | The fast repairing method that asphalt concrete core of embankment dams depths leaks |
| CN106120794A (en) * | 2016-06-27 | 2016-11-16 | 中国葛洲坝集团第二工程有限公司 | The method of pitch paying mortar in deep trouth hole |
| CN106567365A (en) * | 2016-11-04 | 2017-04-19 | 梁军 | Earth and rockfill dam longitudinal reinforcement construction method |
| CN110258521A (en) * | 2019-06-26 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | Ground-connecting-wall encloses well construction |
-
2015
- 2015-10-09 CN CN201520778746.5U patent/CN205012284U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155472A (en) * | 2015-10-09 | 2015-12-16 | 中国电建集团成都勘测设计研究院有限公司 | Dam foundation anti-seepage structure of deep overlying layer earth-rock dam and construction method of dam foundation anti-seepage structure |
| CN105155472B (en) * | 2015-10-09 | 2017-04-26 | 中国电建集团成都勘测设计研究院有限公司 | Dam foundation anti-seepage structure of deep overlying layer earth-rock dam and construction method of dam foundation anti-seepage structure |
| CN105821806A (en) * | 2016-05-17 | 2016-08-03 | 中国电建集团成都勘测设计研究院有限公司 | Water retaining dam united anti-seepage structure |
| CN106120655A (en) * | 2016-06-27 | 2016-11-16 | 中国葛洲坝集团第二工程有限公司 | The fast repairing method that asphalt concrete core of embankment dams depths leaks |
| CN106120794A (en) * | 2016-06-27 | 2016-11-16 | 中国葛洲坝集团第二工程有限公司 | The method of pitch paying mortar in deep trouth hole |
| CN106567365A (en) * | 2016-11-04 | 2017-04-19 | 梁军 | Earth and rockfill dam longitudinal reinforcement construction method |
| CN106567365B (en) * | 2016-11-04 | 2019-02-19 | 梁军 | Earth and rockfill dam longitudinal reinforcement construction method |
| CN110258521A (en) * | 2019-06-26 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | Ground-connecting-wall encloses well construction |
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