CN105133571B - A kind of deep hole tilts curtain and vertical curtain plugging type connection method - Google Patents
A kind of deep hole tilts curtain and vertical curtain plugging type connection method Download PDFInfo
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- CN105133571B CN105133571B CN201510475277.4A CN201510475277A CN105133571B CN 105133571 B CN105133571 B CN 105133571B CN 201510475277 A CN201510475277 A CN 201510475277A CN 105133571 B CN105133571 B CN 105133571B
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Abstract
Curtain and vertical curtain plugging type connection method are tilted the invention discloses a kind of deep hole, is comprised the following steps：Choose lower floor's grouting adit（2）Section is come directly towards as connection block section（4）, be in the milk adit to lower floor（2）Overlap joint curtain（7）It is in the milk；From upper strata grouting adit（1）Do connection block section（4）Inclination curtain；Be in the milk adit to lower floor（2）Connection block section（4）Concrete closure is carried out, rockfill grouting is carried out after the completion of closure；In connection block section（4）, from upper strata grouting adit（1）Vertical curtain is made to lower floor's grouting adit（2）, it is in the milk the curtain lap segment that the vertical grout curtain of deep hole of adit formed between levels grouting adit with lower floor.Present invention reduces difficulty of construction, linkage section grouting quality is improved, makes constructing operation more convenient and quicker.
Description
Technical field
The present invention relates to grout curtain field, more particularly to a kind of deep hole tilts curtain and vertical curtain plugging type connection side
Method.
Background technology
With the development of construction technique of earth and rock dam, more and more large-scale hugeization of earth-rock works with design planning is being built.
The quantity of grouting adit is incrementally increased, and length is progressively lengthened, and the discrepancy in elevation between grouting adit is also progressively increased.Traditional grouting adit
Connection between the vertical curtain of deep hole and oblique curtain generally uses this connection method of varied angle deep hole grout curtain, however, by
In the increase of grout curtain hole hole depth, it is necessary to which the deep hole grout curtain connection method of traditional varied angle is at controlled grouting hole deviation angle
Degree precision aspect has higher requirements, and this has resulted in the increase of conventional construction method difficulty of construction, can not meet what is progressively developed
Engineering construction demand.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of deep hole and tilt curtain and vertical curtain plugging type connection side
Method, reduces difficulty of construction, improves linkage section grouting quality, makes constructing operation more convenient and quicker.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of deep hole tilts curtain and vertical curtain plugging type connection method, comprises the following steps：
Lower floor's grouting adit top section is chosen as connection block section, the overlap joint curtain for the adit that is in the milk to lower floor is filled
Slurry；
The inclination curtain of connection block section is made from upper strata grouting adit, the inclination curtain is upper strata grouting adit and lower floor
Curtain between grouting adit；
Concrete closure is carried out to the connection block section of lower floor's grouting adit, rockfill grouting is carried out after the completion of closure；
In connection block section, do vertical curtain to lower floor from upper strata grouting adit and be in the milk adit, be in the milk adit with lower floor
The curtain lap segment that the vertical grout curtain of deep hole is formed between levels grouting adit.
It is additionally included in increase in the middle of the inclination curtain of connection block section and vertical curtain and determines angle inclination curtain.
The angle of inclination for determining angle inclination curtain is 2.5 °.
Lower floor's grouting adit top section is 8 ~ 10m.
The inclination curtain is 60m, and the overlap joint curtain is 8 ~ 10m.
Compared with prior art, the beneficial effects of the invention are as follows：1）Without continuous varied angle deep hole, difficulty of construction greatly drops
It is low, it is easy to operate, it is convenient and swift；2）Linkage section overlaps curtain without spacial multi-angle hole position, it is easy to construct；3）Grouting adit is taken
Connect the laggard horizontal high voltage inclination grout curtain of section closure to be combined with the overlap joint grout curtain of spacial multi-angle hole position, be more beneficial for ensureing
Lap segment construction quality.
Brief description of the drawings
Fig. 1 is a kind of plugging type connection method of the invention along grouting adit length direction schematic diagram.
Fig. 2 is that a kind of plugging type connection method of the invention is vertically in the milk adit length direction schematic diagram.
Fig. 3 is a kind of grout hole position plane schematic diagram of the plugging type connection method of the invention in overlapping regions.
In figure：The vertical curtains of 0-, oblique curtain lap segment；Be in the milk adit on 1- upper stratas；2- lower floors grouting adit；3- connections are blocked
Oblique curtain, the vertical curtain of section；4- connections block section；5- upper stratas grout curtain bottom line；6- grout curtain bottom lines；7- overlaps curtain
Curtain；8- lower floors grouting adit connection block section；9- connections 5 ° of angling holes of block section grout curtain, that is, tilt curtain；10- connections are sealed
Stifled section 2.5 ° of angling holes of increased grout curtain；The vertical hole of 11- connection block section grout curtains；Be in the milk the oblique curtain of adit on 12- upper stratas
Curtain hole；The 13- upper stratas grouting adit connection vertical curtain hole in block section；14- upper stratas 2.5 ° of grout curtain holes of grouting adit linkage section；
The 15- upper stratas grouting vertical curtain hole position of adit；The oblique grout curtain areas of 16-；The vertical grout curtain areas of 17-.
Embodiment
With reference to embodiment, the present invention is further illustrated, and a kind of deep hole of the invention tilts curtain and lead
Straight curtain plugging type connection method is specially：
1st, lower floor's grouting adit 2 top section is chosen as connection block section 4, and the overlap joint curtain 7 for the adit 2 that is in the milk to lower floor enters
Row grouting.
2nd, the inclination curtain 9 of connection block section 4 is made from upper strata grouting adit 1, the inclination curtain 9 is upper strata grouting adit
Curtain between 1 and lower floor's grouting adit 2.
3rd, after overlap joint curtain and oblique grout curtain have been checked, the connection block section 4 for the adit 2 that is in the milk to lower floor carries out coagulation
Grave is blocked up, and rockfill grouting is carried out after the completion of closure.
4th, in connection block section 4, vertical curtain is made to lower floor's grouting adit 2 from upper strata grouting adit 1, is in the milk with lower floor
The curtain lap segment that the vertical grout curtain of deep hole of adit is formed between levels grouting adit.
Further, to ensure to tilt the grouting effect between the row of curtain two, it is additionally included in the inclination curtain of connection block section 4
Curtain determines angle with increase in the middle of vertical curtain and tilts curtain.Specifically, the angle of inclination for determining angle inclination curtain is 2.5 °.
Lower floor's grouting adit 2 top section is 8 ~ 10m.The inclination curtain is 60m, and the overlap joint curtain 7 is 8 ~ 10m.Tilt curtain
Curtain grouting pressure overlaps grout curtain pressure much larger than varied angle, is more beneficial for ensureing the construction quality of linkage section.Connection closure
The vertical grout curtain of deep hole outside block section 4 is attached after the completion of the construction of section 4, directly grouting adit 1 does vertical from upper strata
Curtain forms continuous curtain curtain wall and carries out antiseepage to the curtain bottom line of lower floor's grouting adit 2.
Engineering application example
In the long sill may power station built, each 5 grouting adit of left and right banks, the elevation grouting adit lining cutting of right bank lower floor 1460 is
Complete and the oblique grout curtain of deep hole has also been completed, wherein the lower floor of right bank 1460 grouting adit right bank termination coordinate is vertical 0+436.2.
Original design is angle grout curtain overlapping regions in vertical 0+427.10 ~ vertical 0+447.10.Overlapping regions right bank is the 1520m of design
The downward vertical curtain hole of elevation, overlapping regions left bank is 5 ° of downward inclination curtain holes of 1520m elevations.Overlapping regions use by
5 ° of oblique curtains of deep hole fade to vertical curtain from left to right, and by being connected with lower floor's grouting adit varied angle overlap joint curtain hole
Connect, it is ensured that space overlaps quality.In traditional connection method, the grouting of right bank 1520 is flat in angle grout curtain overlapping regions
Upstream row oblique curtain in hole arranges 4 ° of inclination curtains（Totally 7 holes）, remaining 3 hole is changed to 3 °, 2 °, 1 ° of curtain hole, curtain in order
Bottom line is EL.1454.In the range of angle overlap joint, 1520 grouting adit upstream row curtain holes since vertical 0+429.10 in order
For 4 °, 3 °, 2 °, 1 ° of curtain hole, curtain bottom line elevation is EL.1467, and remaining 6 hole is changed to vertical curtain hole, and curtain bottom line is high
Journey is 1460 grouting adit curtain bottom lines.In angle overlapping regions（Vertical 0+427.10 ~ vertical 0+447.10）, 1520 grouting adits
Upstream and downstream row curtain centerline hole at increase row's curtain hole, since vertical 0+427.10 curtain orifice angle be followed successively by 5 °, 4 °,
3 °, 2 °, 1 °, curtain bottom line elevation is EL.1467, and carries out the overlap joint grout curtain of multi-angle in lower floor's grouting adit（It is maximum
Grouting pressure 1.5MPa）Remaining 6 hole is changed to vertical curtain hole, and curtain bottom line elevation is 1460 grouting adit curtain bottom lines.This
Varied angle is taken in connection method（5°→4°→3°→2°→1°→0°）Overlap joint, curtain hole depth is more than 60m, and needs to carry out accordingly
Porous lower layer grouting adit varied angle space overlap joint curtain hole, construction precision requires high, and difficulty of construction is very big.
After plugging type connection method of the present invention, by setting the grouting adit block section of 8m length, section grouting is flat
Enter line tilt grout curtain to the grouting bottom line of lower floor's grouting adit, levels grouting adit in upper strata grouting adit after the closure of hole
Between form grout curtain overlapping regions, and by seeing the low-angle of progress in former tiltedly curtain and the vertical curtain that is carried out after closure
（2.5°）Oblique curtain so that vertical curtain is effectively connected with tilting curtain.
Claims (5)
1. a kind of deep hole tilts curtain and vertical curtain plugging type connection method, it is characterised in that comprise the following steps：
Choose lower floor's grouting adit（2）Section is come directly towards as connection block section（4）, be in the milk adit to lower floor（2）Overlap joint curtain（7）
It is in the milk；
From upper strata grouting adit（1）Do connection block section（4）Inclination curtain（9）, the inclination curtain（9）It is upper strata grouting
Adit（1）With lower floor's grouting adit（2）Between curtain；
Be in the milk adit to lower floor（2）Connection block section（4）Concrete closure is carried out, rockfill grouting is carried out after the completion of closure；
In connection block section（4）, from upper strata grouting adit（1）Vertical curtain is made to lower floor's grouting adit（2）, it is in the milk flat with lower floor
Hole（2）Vertical grout curtain formed levels grouting adit between curtain lap segment.
2. a kind of deep hole as claimed in claim 1 tilts curtain and vertical curtain plugging type connection method, it is characterised in that also
It is included in connection block section（4）Inclination curtain and vertical curtain in the middle of increase determine angle inclination curtain.
3. a kind of deep hole as claimed in claim 2 tilts curtain and vertical curtain plugging type connection method, it is characterised in that institute
State determine angle tilt curtain angle of inclination be 2.5 °.
4. a kind of deep hole as claimed in claim 1 tilts curtain and vertical curtain plugging type connection method, it is characterised in that institute
State lower floor's grouting adit（2）Top section is 8 ~ 10m.
5. a kind of deep hole as claimed in claim 1 tilts curtain and vertical curtain plugging type connection method, it is characterised in that institute
It is 60m, the overlap joint curtain to state inclination curtain（7）For 8 ~ 10m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510475277.4A CN105133571B (en) | 2015-08-06 | 2015-08-06 | A kind of deep hole tilts curtain and vertical curtain plugging type connection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510475277.4A CN105133571B (en) | 2015-08-06 | 2015-08-06 | A kind of deep hole tilts curtain and vertical curtain plugging type connection method |
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| Publication Number | Publication Date |
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| CN105133571A CN105133571A (en) | 2015-12-09 |
| CN105133571B true CN105133571B (en) | 2017-07-25 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105966797B (en) * | 2016-05-25 | 2019-03-22 | 清华大学 | Design method for the double-curtain type system for preventing oil-gas depot from revealing |
| CN106894390B (en) * | 2017-03-06 | 2019-05-03 | 中国电建集团中南勘测设计研究院有限公司 | A kind of grout curtain method suitable for dam two sides |
| CN107989044A (en) * | 2017-11-27 | 2018-05-04 | 云南建投第十建设有限公司 | The selection of special geology Percussion Piles dado structure material and control method |
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|---|---|---|---|---|
| US5026215A (en) * | 1988-12-02 | 1991-06-25 | Geochemical Corporation | Method of grouting formations and composition useful therefor |
| JPH1018281A (en) * | 1996-07-03 | 1998-01-20 | Maeda Corp | Curtain grouting method |
| CN102505701A (en) * | 2011-09-28 | 2012-06-20 | 中国水利水电第七工程局成都水电建设工程有限公司 | Self-compaction mortar and deep hole curtain pouring construction method |
| CN102864786A (en) * | 2012-09-28 | 2013-01-09 | 葛洲坝集团基础工程有限公司 | Hole deviation control method for drilling in deep hole curtain grouting |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202954377U (en) * | 2012-12-13 | 2013-05-29 | 中国水电顾问集团成都勘测设计研究院 | Cover-plate dam foundation triangle-region curtain structure |
| CN203080558U (en) * | 2013-02-06 | 2013-07-24 | 中国水电顾问集团北京勘测设计研究院 | Direct-type high-pressure grout curtain connection structure in thin lining-grouting cave |
| CN204212168U (en) * | 2014-10-31 | 2015-03-18 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of dam water-retaining structure utilizing solution cavity to combine to build a dam |
| CN104358270A (en) * | 2014-12-03 | 2015-02-18 | 中国电建集团成都勘测设计研究院有限公司 | High core wall rock-fill dam foundation seepage prevention structure on deep overburden layer |
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2015
- 2015-08-06 CN CN201510475277.4A patent/CN105133571B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5026215A (en) * | 1988-12-02 | 1991-06-25 | Geochemical Corporation | Method of grouting formations and composition useful therefor |
| JPH1018281A (en) * | 1996-07-03 | 1998-01-20 | Maeda Corp | Curtain grouting method |
| CN102505701A (en) * | 2011-09-28 | 2012-06-20 | 中国水利水电第七工程局成都水电建设工程有限公司 | Self-compaction mortar and deep hole curtain pouring construction method |
| CN102864786A (en) * | 2012-09-28 | 2013-01-09 | 葛洲坝集团基础工程有限公司 | Hole deviation control method for drilling in deep hole curtain grouting |
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| CN105133571A (en) | 2015-12-09 |
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