CN106224001B - A kind of big cross section circular tunnel flow-passing surface bottom arch special protection device and preparation method - Google Patents
A kind of big cross section circular tunnel flow-passing surface bottom arch special protection device and preparation method Download PDFInfo
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- CN106224001B CN106224001B CN201610837293.8A CN201610837293A CN106224001B CN 106224001 B CN106224001 B CN 106224001B CN 201610837293 A CN201610837293 A CN 201610837293A CN 106224001 B CN106224001 B CN 106224001B
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- water
- geotextiles
- surface bottom
- steady layer
- passing surface
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- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000004575 stone Substances 0.000 claims abstract description 29
- 239000004746 geotextile Substances 0.000 claims abstract description 25
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 23
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 23
- 241001330002 Bambuseae Species 0.000 claims abstract description 23
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 23
- 239000011425 bamboo Substances 0.000 claims abstract description 23
- 239000011449 brick Substances 0.000 claims abstract description 17
- 239000004576 sand Substances 0.000 claims abstract description 12
- 239000004568 cement Substances 0.000 claims abstract description 5
- 238000000227 grinding Methods 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 230000001681 protective effect Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 32
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention is a kind of circular tunnel flow-passing surface bottom arch special protection device and preparation method.It mainly includes the brick gutter that geotextiles, bamboo springboard, graded broken stone, steady layer of water and both sides are set, geotextiles, which are arranged in, have been poured on round tunnel flow-passing surface bottom arch, bamboo springboard is laid on above geotextiles, cover geotextiles, graded broken stone is layered on above bamboo springboard, and grinding compacting, steady layer of water is layered on above graded broken stone, flat smooth is rolled, steady layer of water both sides set brick gutter.The graded broken stone mixture be 15% middle stone, 45% gravelstone, 40% sand；The steady layer of water uses sandstone aggregate mixing to add weight after finishing and is formed for the 4% of sandstone aggregate weight cement plus water mixing, and wherein sandstone aggregate is by 55% gravelstone, 45% sand composition.Present invention improves civilized construction environment, overcome that construction efficiency is low, and it is big that personnel clear up labor intensity, it takes and takes a lot of work, the problems such as security risk protrudes, reduce hand labor intensity and security risk, improve civilized construction image, accelerate construction progress, save construction cost.
Description
Technical field
The invention belongs to hydraulic and hydroelectric engineering technical fields, and in particular to a kind of big cross section circular tunnel flow-passing surface bottom arch is special
Different protective device and preparation method.
Background technology
There are the big cross section circle overcurrent tunnels of various performances, such as diversion tunnel in large water conservancy hydroelectric engineering construction
Hole, tailwater tunnel etc., with maturation and the development, at present, most of circular tunnel concrete of Construction for Hydroelectric Project technology
Lining construction method is generally：The concrete that bottom is encircleed in the range of 100 °~120 ° is first poured into completion using overmolded, it is then remaining
Side-top arch concrete is poured using telescoping steel form in the range of 260 °~240 °.
Circular overcurrent tunnel bottom arch lining finish building into carry out side-top arch concrete lining cutting construction in, concrete mixer truck and
It passes through on the bottom arch that payload materials transport vehicle need to be completed in lining cutting, and circular tunnel side and roof arch lining cutting accounts for Construction of Tunnel Liner work
Phase and more than the 70% of workload, when side and roof arch is constructed, material and sundries can not be avoided dropping on the bottom arch poured and caused
Damage, in addition the vehicle pass-through time is longer, easily causes to wear to having poured bottom arch, destroy, and tunnel flow-passing surface is generally to lining
Building concrete appearance requirement is higher, even across can also influence its overall operation effect and appearance after reparation.
Common tunnel invert concrete protective method is directly to pad in one layer of hole to excavate rock ballast on the arch concrete of bottom, and
Need that pouring concrete carries out watering maintenance and in vehicle to tunnel side and roof arch during tunnel side-top arch concrete lining cutting is carried out
During current can entrapped moisture and mud, the rock ballast miriness for be easy to causeing protection can't bear, live civilized construction image is very poor,
Live civilized construction requirement can not be met and safeguarded, it is necessary to put into substantial amounts of artificial and equipment, and do not have effect.Therefore,
The problem of how overcome the deficiencies in the prior art is current hydraulic and hydroelectric engineering technical field urgent need to resolve.
The content of the invention
The purpose of the present invention is to solve the protection of existing tunnel invert and the deficiencies of civilized construction, provide a kind of circular tunnel
Special protection device and preparation method are encircleed in hole flow-passing surface bottom, largely improve construction environment, reduce security risk,
Overall construction cost is reduced, accelerates construction speed.To achieve the above object, the technical solution adopted by the present invention is as follows：
Special protection device is encircleed at a kind of circular tunnel flow-passing surface bottom, mainly including geotextiles, bamboo springboard, graded broken stone, water
The brick gutter that steady layer and both sides are set, geotextiles, which are arranged in, have been poured on round tunnel flow-passing surface bottom arch, bamboo springboard paving
It is located above geotextiles, covers geotextiles, graded broken stone is layered on above bamboo springboard, and grinding compacting, it is broken that steady layer of water is layered on grading
Above stone, flat smooth is rolled, bottom arch protection steady layer of water both sides set brick gutter.
The steady layer of water is made of cement, gravelstone and sand.
The bamboo springboard is to be worn by blocks of bamboo chip with steel bar, is processed into 20~30cm of width, the plate of length 3m
Block objects.
The gutter uses the red brick masonry of 24cm × 11.5cm × 5.3cm, and brick width is 20cm.
The geotextiles thickness 5mm.
A kind of method for circular tunnel flow-passing surface bottom arch special protection device, it is broken by geotextiles, bamboo springboard, grading
The setting of stone, the brick gutter of steady layer of water and both sides forms the protective device, and bamboo springboard is placed in geotextiles the upper surface of, grade
With rubble above bamboo springboard, for steady layer of water above graded broken stone, steady layer of water both sides set brick gutter, the grade
With the middle stone that rubble match ratio is 15%, 45% gravelstone, 40% sand；The steady layer of water is used after the completion of sandstone aggregate mixing
The 4% cement plus water mixing that weight is sandstone aggregate weight is added to form, wherein sandstone aggregate by 55% gravelstone, 45%
Sand forms.
The geotextiles are laid immediately on the circular tunnel flow-passing surface bottom 60 ° of scopes of arch for having poured completion.
The steady layer of water interior thickness is 30cm, and 3% slope is laterally set to be convenient for draining from centre to both sides.
The middle stone grain footpath of the graded broken stone is 37.5 ~ 19mm, and the grain size of gravelstone is 19 ~ 4.75mm, the grain size of sand<
4.75mm。
Gravelstone grain size in the proportioning of the steady layer of water is 19 ~ 4.75mm, the grain size of sand<4.75mm.
Compared with prior art, the present invention its advantage is：
1st, the protection of circular overcurrent tunnel invert is changed to pad geotextiles, bamboo springboard, grading by the present invention by previous pinner slag
Rubble and steady layer of water, and gutter is set in both sides, civilized construction environment is improved, it is low to overcome construction efficiency, Ren Yuanqing
The problems such as reason labor intensity is big, takes and takes a lot of work, and security risk protrudes, civilized construction Meteorological can be reduced by the present invention,
Hand labor intensity and security risk are reduced, improves civilized construction image, accelerates construction progress, save construction cost.
2nd, after the present invention carries out special protection using geotextiles, bamboo springboard, graded broken stone and steady layer of water to circular flow-passing surface,
So that road surface slippery is smooth, construction waste water is flowed directly to both sides gutter, and live civilized construction environment is preferable, and disposable input makes
With rear, except cleaning road surface in time, without encircleing protection as existing bottom the regular rock ballast to argillization position is needed to be cleared up simultaneously
Re-lay, reduce the input of personnel and equipment, reduce the interference to side and roof arch concrete construction, accelerate construct into
Degree, compared with existing guard method, can save 20% cost.
3rd, the invention belongs to the scope that hydraulic and hydroelectric engineering technical field basis is changed, water conservancy and hydropower work will greatly be promoted
Journey circular tunnel flow-passing surface bottom arch protects the progress in terms of technique, efficiency, in the document of tunnel concrete construction at home and abroad
Have no relevant report.
4th, the present invention yet there are no applies in Construction of Hydropower Engineering, is intended to reduce the labor intensity of construction personnel,
It is cost-effective, improve civilized construction image, improve construction efficiency.It is applied in the construction of large-scale circular overcurrent tunnel concrete liner
Value is higher.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, the accompanying drawings in the following description is only some realities of the present invention
Example is applied, it for those of ordinary skill in the art, without having to pay creative labor, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is that the schematic diagram of special protection device is encircleed at the circular tunnel flow-passing surface bottom of the present invention；
Wherein, 1, geotextiles；2nd, bamboo springboard；3rd, graded broken stone；4th, steady layer of water；5th, brick；6th, round tunnel mistake has been poured
Encircle at stream interface bottom.
Specific embodiment
With reference to embodiment, the present invention is described in further detail.
It will be understood to those of skill in the art that the following example is merely to illustrate the present invention, and it should not be regarded as limiting this hair
Bright scope.In the examples where no specific technique or condition is specified, according to the described technology of document in the art or condition
Or it is carried out according to product description.Production firm person is not specified in material therefor, the equipment or instrument, is that can be obtained by purchase
The conventional products obtained.
The circular tunnel flow-passing surface bottom arch special protection device of the present invention is as shown in Figure 1, it includes geotextiles 1, bamboo springboard
2nd, graded broken stone 3, steady layer of water 4, brick 5.It is formed and preparation method is as follows：
The geotextiles 1 are laid immediately on the arch of bottom, and are laid with smooth；
The bamboo springboard 2 is laid on above geotextiles, and being laid with should be tight；
The graded broken stone 3 uses 15% middle stone（37.5 ~ 19mm of grain size）, 45% gravelstone（19 ~ 4.75mm of grain size）,
40% sand（Grain size<4.75mm）Transport to scene is laid in above bamboo springboard after mixing, and uses vibrating roller grinding compacting；
The steady layer of water 4 adds 4% cement of the weight for sandstone aggregate weight after the completion of using sandstone aggregate mixing
Water mixing is added to form, wherein sandstone aggregate by 55% gravelstone（19 ~ 4.75mm of grain size）, 45% sand（Grain size<4.75mm）Composition,
It transports to circular tunnel flow-passing surface bottom and encircles after the completion of mixing, using backhoe stone, then smooth, the steady layer of water with vibrating roller grinding compacting
Interior thickness is 30cm, and 3% slope is laterally set to be convenient for draining from centre to both sides.
The gutter is built by laying bricks or stones using common brick 5, is arranged on steady layer of water both sides, and brick width is 20cm, and pavement construction gives up
Water is flow to by sloping ground in gutter, and side and roof arch curing water flows into gutter by both sides abutment wall.
Basic principle, main feature and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (4)
1. a kind of preparation method of circular tunnel flow-passing surface bottom arch special protection device, it is characterised in that：It is jumped by geotextiles, bamboo
The setting of plate, graded broken stone, the brick gutter of steady layer of water and both sides forms the protective device, and bamboo springboard is placed in geotextiles
The upper surface of, graded broken stone is above bamboo springboard, and for steady layer of water above graded broken stone, steady layer of water both sides set brick draining
Ditch, the graded broken stone mixture be 15% middle stone, 45% gravelstone, 40% sand；The steady layer of water uses sandstone aggregate
It adds the 4% cement plus water mixing that weight is sandstone aggregate weight after the completion of mixing to form, wherein sandstone aggregate is by 55%
Gravelstone, 45% sand composition；The circular tunnel flow-passing surface bottom arch special protection device mainly includes geotextiles, bamboo springboard, grade
With the brick gutter that rubble, steady layer of water and both sides are set, geotextiles, which are arranged in, have been poured on round tunnel flow-passing surface bottom arch,
Bamboo springboard is laid on above geotextiles, covers geotextiles, and graded broken stone is layered on above bamboo springboard, grinding compacting, steady layer of water paving
On graded broken stone, flat smooth is rolled, steady layer of water both sides set brick gutter.
2. the preparation method of arch special protection device in circular tunnel flow-passing surface bottom according to claim 1, it is characterised in that：
The geotextiles are laid immediately on the circular tunnel flow-passing surface bottom 60 ° of scopes of arch for having poured completion.
3. the preparation method of arch special protection device in circular tunnel flow-passing surface bottom according to claim 1, it is characterised in that：
The middle stone grain footpath of the graded broken stone is 37.5 ~ 19mm, and the grain size of gravelstone is 19 ~ 4.75mm, the grain size of sand<4.75mm.
4. the preparation method of arch special protection device in circular tunnel flow-passing surface bottom according to claim 1, it is characterised in that：
Gravelstone grain size in the proportioning of the steady layer of water is 19 ~ 4.75mm, the grain size of sand<4.75mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610837293.8A CN106224001B (en) | 2016-09-21 | 2016-09-21 | A kind of big cross section circular tunnel flow-passing surface bottom arch special protection device and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610837293.8A CN106224001B (en) | 2016-09-21 | 2016-09-21 | A kind of big cross section circular tunnel flow-passing surface bottom arch special protection device and preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106224001A CN106224001A (en) | 2016-12-14 |
| CN106224001B true CN106224001B (en) | 2018-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610837293.8A Active CN106224001B (en) | 2016-09-21 | 2016-09-21 | A kind of big cross section circular tunnel flow-passing surface bottom arch special protection device and preparation method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110835903A (en) * | 2019-11-27 | 2020-02-25 | 中国水利水电第一工程局有限公司 | Bottom arch concrete protection device and method for water delivery tunnel in shape of horseshoe |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000145392A (en) * | 1998-11-04 | 2000-05-26 | Fujimori Sangyo Kk | Tunnel execution method |
| CN202402077U (en) * | 2011-12-28 | 2012-08-29 | 浙江大学 | Flat and straight linear highway tunnel with drainage system |
| CN202560319U (en) * | 2012-04-01 | 2012-11-28 | 中铁十二局集团第二工程有限公司 | Tunnel drainage and pressure reduction structure |
| CN103334770B (en) * | 2013-06-09 | 2015-08-12 | 中铁隧道集团有限公司 | One is grown up reverse-slope tunnel ultra high water pressure rich water zone of fracture construction method |
| CN103670446B (en) * | 2013-12-13 | 2016-03-23 | 中铁二十三局集团有限公司 | Circular diversion tunnel 2/3 circle concrete-liner construction method |
| CN206092062U (en) * | 2016-09-21 | 2017-04-12 | 中国水利水电第十四工程局有限公司 | Special protection device encircles at bottom of big circular tunnel flow surface of section |
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