CN110067581A - The arrangement and construction method of trouble or opening armored concrete branch sheath embedded hole are opened in tunnel or tunnel - Google Patents
The arrangement and construction method of trouble or opening armored concrete branch sheath embedded hole are opened in tunnel or tunnel Download PDFInfo
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- CN110067581A CN110067581A CN201910394706.3A CN201910394706A CN110067581A CN 110067581 A CN110067581 A CN 110067581A CN 201910394706 A CN201910394706 A CN 201910394706A CN 110067581 A CN110067581 A CN 110067581A
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- Prior art keywords
- buried
- tunnel
- opening
- trouble
- steel ring
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
Abstract
Trouble or opening armored concrete branch sheath embedded hole arrangement and construction method are opened in a kind of tunnel or tunnel, it is disclosed when the branch sheath construction of trouble or opening is opened in tunnel or tunnel, process by increasing the fixed several plastic tubes of steel ring, realizes that arrangement is used for the built-in pipe of demolition blasting blasthole.It is broken or the occasions such as cannot expose that the present invention is suitable for tunnel or roadway surrounding rock, avoids bore operation, shortens the duration, reduce construction cost, brings good economic and social benefit.
Description
Technical field
The present invention relates to blasting engineering fields, and in particular to opens trouble or opening armored concrete to a kind of tunnel or tunnel
Branch sheath embedded hole arrangement and construction method.
Background technique
In underground engineering construction, the tunnel or tunnel of some intersections can be designed, in building for convenience with another
Tunnel or roadway linking can need open trouble or opening to take not supporting, wait another tunnel in the tunnel or tunnel built
Or supporting together is built in tunnel.But the country rock in tunnel or roadway excavation is excessively broken sometimes or cannot be exposed to for a long time
In air, support work must be just carried out immediately, and not so tunnel or tunnel may locally occur side and collapse.So will be with another tunnel
Road or roadway linking will carry out open trouble or opening operation on the good tunnel of supporting or tunnel side wall.Usual blasting technique is
The efficient means of trouble or opening are opened in tunnel or tunnel, and common way is in engineering: in jag or being opened to the good tunnel of supporting
Bore operation is carried out at mouthful, arranges multiple blastholes along supporting layer surface normal direction, and explosive is loaded onto inside blasthole and carries out explosion
Open trouble or opening.There are many drawbacks for this way:
1, due to there is the presence of steel mesh, steel arch-shelf, dowel, anchor pole in tunnel or roadway support layer, it is difficult to drill, and
More blasthole is needed in perforation explosion, so that drilling cost is often very high.
2, since hole count is more, the angle control of requirement and blasthole of the artificial drilling to blasthole position is less accurate, from
And influence demolition effect.
3, hole count is more, and artificial drilling is very time-consuming, extends the duration, it is also possible to influence the stability of tunnel structure.
4, a large amount of dust that drilling generates causes pollution to environment.
In order to solve the problem above-mentioned, trouble is opened in tunnel or tunnel after just considering at the beginning of design or opening reinforcing bar is mixed
Solidifying soil branch sheath embedded hole arrangement and construction method, the pre-buried pipeline of normal direction along tunnel or roadway support layer surface are realized
Trouble is opened for later tunnel or tunnel or opening explosion provides the purpose of blasthole.
Summary of the invention
The problem to be solved by the invention is to provide a kind of tunnels or tunnel to open trouble or opening armored concrete branch sheath
Embedded hole arrangement and construction method, the present invention just consider the problem of opening trouble or opening, design at the beginning of tunnel or roadway support
The fixation of pre-buried pipeline when arrangement, the supporting construction of trouble and opening embedded hole is opened out, and trouble is opened in pre-buried pipeline formation or opening is quick-fried
The blasthole for breaking digging achievees the purpose that trouble or opening are opened in efficient, inexpensive, green explosion.
The object of the present invention is achieved like this: a kind of tunnel or trouble is opened in tunnel or opening armored concrete branch sheath is pre-
It is identical by the contour line production of designed each circle blasthole when buried via hole arrangement and construction method, tunnel or roadway support are constructed
The steel ring of shape after squeezing into anchor pole process in tunnel wall, two rows of parallel rebar circles is welded and fixed with anchor pole, built-in pipe
In corresponding position and steel ring binding and fixing, the work of tunnel support below is then completed, pre-buried blasthole is formed.
The built-in pipe uses PVC plastic pipe.
The construction method of the arrangement of trouble or opening armored concrete branch sheath embedded hole is opened in a kind of tunnel or tunnel,
The following steps are included:
1) it after tunnel or drift section are excavated to out trouble or opening, drills after removing the floating dust for opening trouble or opening, landwaste,
It is inserted into hollow bolt in hole, and anchor pole extension elongation is made to be less than branch covering thickness, is added gasket in tail portion, screws on nut grouting behind shaft or drift lining,
Cableway net is simultaneously bound with anchor pole, is then sprayed anchor, is formed spray anchor layer；
2) spray anchor layer surface outside set up be fixedly connected with anchor pole pre-buried slotting pipe steel ring, pre-buried auxiliary tube steel ring, in advance
Bury peripheral tubes steel ring, the shape of three steel rings respectively with open the pre-buried periphery hole of trouble or opening, pre-buried via hole, pre-buried
Keyhole contour line is identical, and steel arch-shelf is set up in Vertical tunnel middle line direction at a certain distance, then between preceding layer steel ring
At a certain distance place arrangement one layer of same steel ring, steel ring include pre-buried slotting pipe steel ring, pre-buried auxiliary tube steel ring,
Pre-buried peripheral tubes steel ring, and welded with anchor pole, keep plane where two layers of steel ring parallel；
3) pre-buried peripheral tubes, the pre-buried auxiliary tube in outer ring and pre-buried slotting pipe are arranged perpendicular to armored concrete supporting layer surface,
Toward branch sheath internal stretch, the other end extends to supporting layer surface for one end, and pre-buried peripheral tubes, the pre-buried depth of pre-buried auxiliary tube are small
In branch covering thickness, the pre-buried depth of pre-buried slotting pipe is branch covering thickness, and with tied silk that pre-buried peripheral tubes, outer ring is pre-buried auxiliary
Pipe, pre-buried slotting pipe both ends is helped successively to bind respectively on two layers of steel ring at regular intervals；Distinguish at the both ends of empty built-in pipe
It is bundled and is tensed with tied silk, the other end of tied silk is vertically bound on the side of pre-buried slotting pipe steel ring, and single inner ring is pre-buried auxiliary
The both ends of pipe are helped to bind tied silk respectively, the pre-buried auxiliary tube of the tied silk other end and three outer rings fixed bundlees, will be all pre-
Pipe laying seals its upper and lower opening with plastic film；
4) steel arch-shelf is completely covered in gunite concrete again, forms multiple spray-up；
5) in multiple spray-up surface construction waterproof layer, reinforcing bar is arranged along abutment wall, arch, with lining trolley formwork erection, casting concrete
And it consolidates.
Above-mentioned steps 1) there is another construction method, tunnel or drift section to open trouble or opening after, open trouble or
Opening blows off the floating dust of scar, landwaste with high-pressure blast, carries out just pneumatically placed concrete in net scar, is bored after solidification with drilling machine
Hollow bolt is inserted into hole, and anchor pole extension elongation is made to be less than branch covering thickness, is added gasket in tail portion, is screwed on nut grouting behind shaft or drift lining, frame
Vertical steel mesh is welded with anchor pole or is bound with iron wire.
Another construction method of step 5) is in multiple spray-up surface construction waterproof layer, with lining trolley along abutment wall, arch
Portion's formwork erection, casting concrete simultaneously consolidate.
It is to excavate inverted arch, and arrange reinforcing bar and formwork erection casting concrete, final set at place that step 5), which has another construction method,
Afterwards, in multiple spray-up surface construction waterproof layer, reinforcing bar is arranged then along abutment wall, vault, with lining trolley formwork erection, casting concrete
And it consolidates.
The construction method of the arrangement of trouble or the embedded hole that is open is opened in a kind of armored concrete supporting tunnel or tunnel, including
Following steps:
2) be parallel to spray anchor layer surface arrange one layer of steel ring comprising pre-buried slotting pipe steel ring, pre-buried auxiliary tube steel ring,
Pre-buried peripheral tubes steel ring, and with anchor pole weld, shape respectively with the pre-buried periphery hole for opening trouble or opening, pre-buried auxiliary
Hole, pre-buried keyhole contour line are identical, then arrange one layer of same steel ring with preceding layer steel ring place spaced apart,
It includes pre-buried slotting pipe steel ring, fixed pre-buried auxiliary tube steel ring, pre-buried peripheral tubes steel ring, and is welded with anchor pole, is made
Plane where two layers of steel ring is parallel；
3) pre-buried peripheral tubes, the pre-buried auxiliary tube in outer ring and pre-buried slotting pipe are arranged perpendicular to armored concrete supporting layer surface,
Toward branch sheath internal stretch, the other end extends to supporting layer surface for one end, and pre-buried peripheral tubes, the pre-buried depth of pre-buried auxiliary tube are small
In branch covering thickness, the pre-buried depth of pre-buried slotting pipe is branch covering thickness, and with tied silk that pre-buried peripheral tubes, outer ring is pre-buried auxiliary
Pipe, pre-buried slotting pipe both ends is helped successively to be bound on two layers of steel ring respectively；The both ends of empty built-in pipe are bundled simultaneously with tied silk respectively
It tenses, the other end of tied silk is vertically bound on the side of pre-buried slotting pipe steel ring, and the both ends of the single pre-buried auxiliary tube of inner ring are divided
Tied silk is not bound, and the pre-buried auxiliary tube of the tied silk other end and three outer rings fixed bundlees, and all pre-buried pipe plastics is thin
Film seals its upper and lower opening；
4) in spray anchor layer surface construction waterproof layer, coagulation then is poured with lining trolley formwork erection along abutment wall, arch arrangement reinforcing bar
Soil simultaneously consolidates.
Above-mentioned steps 1) there is another construction method, tunnel or drift section to open trouble or opening after, open trouble or
Opening blows off the floating dust of scar, landwaste with high-pressure blast, carries out just pneumatically placed concrete in net scar, is bored after solidification with drilling machine
Hollow bolt is inserted into hole, and anchor pole extension elongation is made to be less than branch covering thickness, is added gasket in tail portion, is screwed on nut grouting behind shaft or drift lining, frame
Vertical steel mesh is welded with anchor pole or is bound with iron wire.
Another construction method of step 4), it is vertical along abutment wall, arch with lining trolley in spray anchor layer surface construction waterproof layer
Mould, casting concrete simultaneously consolidate.
The invention has the following advantages: the present invention provides a kind of tunnel or trouble or opening armored concrete are opened in tunnel
Branch sheath embedded hole arrangement and construction method, the pre-buried PVC plastic pipe when tunnel or roadway support are constructed are needing to open trouble or are opening
It only needs to find PVC plastic pipe when mouthful operation, so that it may carry out bursting work, avoid in tunnel or the drilling of roadway support layer
A large amount of manpower, material resources and financial resources have been saved in operation, also avoid the noise pollution generated in drilling construction.
The present invention opens trouble or opening armored concrete branch sheath embedded hole arrangement and construction party in a kind of tunnel or tunnel
Method, can be easily in supporting layer arrangement blasthole, and the pre-buried hole site arranged is accurate, avoids the artificial drilling many mistakes of bring
Difference accelerates out the speed of trouble or opening to provide the effect of explosion later.
A kind of tunnel or tunnel provided by the invention are opened trouble or opening armored concrete branch sheath embedded hole arrangement and are applied
Work method is conducive to steel mesh, steel arch-shelf, concrete and recycles.
The invention avoids the dust for boring idle job and drilling generation, while reducing the influence to environment.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is tunnel or trouble or opening embedded hole schematic diagram are opened in tunnel.
Fig. 2 is the tunnel or tunnel embedded hole sectional schematic diagram that lining cutting layer is armored concrete.(B-B in Fig. 4)
Fig. 3 is the tunnel or tunnel embedded hole sectional schematic diagram that lining cutting layer is plain concrete.(B-B in Fig. 4)
Fig. 4 is tunnel or tunnel embedded hole diagrammatic cross-section, i.e. Fig. 2, the A-A direction view in 3.
Fig. 5 is no steel arch-shelf and lining cutting layer is the tunnel or tunnel embedded hole sectional schematic diagram of armored concrete.
Fig. 6 is no steel arch-shelf and lining cutting layer is the tunnel or tunnel embedded hole sectional schematic diagram of plain concrete.
Fig. 7 is the fixed schematic diagram of pre-buried slotting pipe.
Fig. 8 is the fixed schematic diagram of sky built-in pipe.
Fig. 9 is the fixed schematic diagram of the pre-buried auxiliary tube in outer ring.
Figure 10 is the inner ring individually fixed schematic diagram of pre-buried auxiliary tube.
Figure 11 is pre-buried peripheral tubes auxiliary schematic diagram.
In figure, embedded hole 1, anchor pole 2, steel arch-shelf 3, steel mesh 4, empty embedded hole 5, pre-buried keyhole 6, the pre-buried auxiliary in outer ring
Hole 7, the single pre-buried via hole 8 of inner ring, pre-buried periphery hole 9, empty built-in pipe 10, pre-buried slotting pipe 11, tied silk 12, pre-buried slotting
Pipe steel ring 13, the pre-buried auxiliary tube 14 in outer ring, the pre-buried auxiliary tube 15 of inner ring, pre-buried auxiliary tube steel ring 16, pre-buried peripheral tubes 17,
Pre-buried peripheral tubes steel ring 18 sprays anchor layer surface 19, reinforcing bar 20, multiple spray-up and secondary lining stratum boundary line 21.
Specific embodiment
Specific embodiment, as shown in figs. 1-11, tunnel or trouble is opened in tunnel or opening armored concrete branch sheath is pre-buried
Hole arrangement and construction method include tunnel or trouble or opening embedded hole schematic diagram are opened in tunnel, and lining cutting layer is the tunnel of armored concrete
Or tunnel embedded hole sectional schematic diagram, lining cutting layer are the tunnel or tunnel embedded hole sectional schematic diagram, tunnel or lane of plain concrete
Road embedded hole diagrammatic cross-section, no steel arch-shelf and lining cutting layer are the tunnel or tunnel embedded hole sectional schematic diagram of armored concrete,
No steel arch-shelf and lining cutting layer are the tunnel or tunnel embedded hole sectional schematic diagram of plain concrete, and pre-buried slotting pipe fixes schematic diagram,
The fixed schematic diagram of empty built-in pipe, the fixed schematic diagram of the pre-buried auxiliary tube in outer ring, individually pre-buried auxiliary tube fixes schematic diagram to inner ring, pre-buried
Peripheral tubes assist schematic diagram.
Embodiment 1:
The long 2km of certain Tunnel Design, 6 meters of span, wall is 2 meters high, sagitta 1.5m, and branch covering thickness is 55cm, needs out in tunnel
Trouble or opening.
Trouble or opening armored concrete branch sheath embedded hole arrangement and construction method are opened according to above-mentioned tunnel or tunnel,
Working procedure of the invention are as follows:
1) after tunnel or drift section open trouble or opening, open trouble or opening with high-pressure blast blow off scar floating dust,
Landwaste is drilled with drilling machine, is inserted into hollow bolt 2, and anchor pole extension elongation is made to be less than branch covering thickness 5cm, in tail portion plus
Gasket screws on nut grouting behind shaft or drift lining, and cableway net is simultaneously welded with anchor pole or bound with iron wire, and then concrete ejection unit sprays
Anchor sprays anchor layer with a thickness of 40mm；
2) from spray anchor layer surface 10cm place set up three with anchor pole weld steel rings, i.e., pre-buried slotting pipe steel ring 13, in advance
Bury auxiliary tube steel ring 16 and pre-buried peripheral tubes steel ring 18, the shape of three steel rings respectively with open designed by trouble or opening
Pre-buried periphery hole, pre-buried via hole, pre-buried keyhole contour line it is identical, reinforcing bar loop diameter is 8mm, Vertical tunnel middle line direction
Steel arch-shelf is set up every 1.5m, and steel arch-shelf side and anchor pole weld, and burn-on longitudinally connected muscle in two adjacent steel arch-shelfs；Then with
Preceding layer steel ring place spaced apart arranges one layer of same steel ring, steel ring include pre-buried slotting pipe steel ring 13,
Pre-buried auxiliary tube steel ring 16, pre-buried peripheral tubes steel ring 18, and welded with anchor pole 2, keep plane where two layers of steel ring parallel；
3) built-in pipe uses PVC plastic pipe, by pre-buried peripheral tubes, pre-buried auxiliary tube, pre-buried slotting pipe along armored concrete supporting
The normal direction of layer surface arranges that one end extends to supporting layer surface toward branch sheath internal stretch, the other end.Pre-buried peripheral tubes,
The pre-buried depth of pre-buried auxiliary tube is 45cm, diameter 50mm, length 55cm, the pre- buried depth of pre-buried slotting pipe and empty built-in pipe
Degree is 50cm, and length 60mm, pre-buried slotting pipe diameter is 50mm, and empty pre-buried pipe diameter is 63mm, and with tied silk by pre-buried week
Bian Guan, pre-buried auxiliary tube, pre-buried slotting pipe both ends are successively bound respectively on two layers of steel ring at regular intervals.Empty built-in pipe
Both ends distinguish tied silk and bundle and tense, the other end of tied silk is bound respectively on the side of triangle steel rib ring, and inner ring is individually pre-
Tied silk is bound at the both ends for burying auxiliary tube respectively, and the tied silk other end and three have fixed pre-buried auxiliary tube binding, by pre-buried effective modeling
Material bag seals its upper and lower opening；
4) multiple pneumatically placed concrete covers steel arch-shelf, and multiple spray is with a thickness of 26cm；
5) reinforcing bar formwork erection casting concrete is arranged at inverted arch, after final set, in multiple spray-up surface construction waterproof layer, then along side
Wall, vault arrange reinforcing bar, and with lining trolley formwork erection, casting concrete is simultaneously consolidated, with a thickness of 25cm.
Embodiment 2:
The long 3km of certain Tunnel Design, 6.5 meters of span, wall is 1.9 meters high, sagitta 1.6m, and branch covering thickness is 50cm, needs in tunnel
Open trouble or opening.
Trouble or opening armored concrete branch sheath embedded hole arrangement and construction method are opened according to above-mentioned tunnel or tunnel,
Working procedure of the invention are as follows:
1) after tunnel or drift section open trouble or opening, open trouble or opening with high-pressure blast blow off scar floating dust,
Landwaste, first thickness of shotcrete are 50mm, are drilled after solidification with drilling machine, are inserted into hollow bolt, and make anchor pole extension elongation
It less than branch covering thickness 10cm, is added gasket in tail portion, screws on nut grouting behind shaft or drift lining, cableway net and anchor pole weld or use iron wire
Binding；
2) steel ring of three with anchor pole welding, the shape difference of three steel rings are set up at the reinforcing bar wire side 8cm from institute's frame
It is identical as pre-buried periphery hole, pre-buried via hole designed by trouble or opening, pre-buried keyhole contour line is opened, and reinforcing bar loop diameter
For 6mm, steel arch-shelf is set up every 1m in Vertical tunnel middle line direction, and steel arch-shelf side and anchor pole weld, and in two adjacent steel arch-shelfs
It burn-ons longitudinally connected muscle, then arranges one layer of same steel ring, steel ring packet with first row steel ring place spaced apart
Pre-buried slotting pipe steel ring 13, pre-buried auxiliary tube steel ring 16, pre-buried peripheral tubes steel ring 18 are included, and is welded with anchor pole 2, makes two
Plane where layer steel ring is parallel；
3) built-in pipe uses PVC plastic pipe, by pre-buried peripheral tubes, pre-buried auxiliary tube, pre-buried slotting pipe along armored concrete supporting
The normal direction of layer surface arranges that one end extends to supporting layer surface toward branch sheath internal stretch, the other end.Pre-buried peripheral tubes,
The pre-buried depth of pre-buried auxiliary tube is 40cm, diameter 50mm, length 45cm, the pre- buried depth of pre-buried slotting pipe and empty built-in pipe
Degree is 45cm, and length 50mm, pre-buried slotting pipe diameter is 50mm, and empty pre-buried pipe diameter is 63mm, and with tied silk by pre-buried week
Bian Guan, pre-buried auxiliary tube, pre-buried slotting pipe both ends are successively bound on steel ring at regular intervals respectively.The two of empty built-in pipe
Tied silk is bundled and is tensed respectively at end, and the other end of tied silk is bound respectively on the side of triangle steel rib ring, and inner ring is single pre-buried auxiliary
The both ends of pipe are helped to bind tied silk respectively, the tied silk other end and three have fixed pre-buried auxiliary tube binding, by pre-buried effective polybag
Seal its upper and lower opening；
4) multiple pneumatically placed concrete covers steel arch-shelf, and multiple spray is with a thickness of 25cm；
5) it in multiple spray-up surface construction waterproof layer, is poured mixed then along abutment wall, vault arrangement reinforcing bar with lining trolley formwork erection
Solidifying soil simultaneously consolidates, with a thickness of 20cm.
Embodiment 3
The long 2.5km of certain Tunnel Design, 5.5 meters of span, wall is 2.1 meters high, sagitta 1.5m, and branch covering thickness is 60cm, in tunnel
Need out trouble or opening.
1) after tunnel or drift section open trouble or opening, the floating of scar is blown off with high-pressure blast opening trouble or opening
Dirt, landwaste, are drilled with drilling machine, are inserted into hollow bolt 2, and anchor pole extension elongation is made to be less than branch covering thickness 12cm, in tail
Portion's shimming, screws on nut grouting behind shaft or drift lining, and cableway net 4 is fixedly connected with anchor pole 2, binds using welding or with iron wire,
Then concrete ejection unit sprays anchor, sprays anchor layer with a thickness of 40mm；
2) steel ring of three with anchor pole welding, i.e., pre-buried slotting pipe steel ring are set up at the reinforcing bar wire side 15cm from institute's frame
13, pre-buried auxiliary tube steel ring 16, pre-buried peripheral tubes steel ring 18, the shape of three steel rings respectively with open trouble or opening place
Pre-buried periphery hole, pre-buried via hole, the pre-buried keyhole contour line of design are identical, and reinforcing bar loop diameter is 6mm, then with first
Placing of reinforcement circle is spaced apart and welds from three same steel rings of arrangement at supporting layer surface 10cm and with anchor pole；
3) built-in pipe uses PVC plastic pipe, by pre-buried peripheral tubes, pre-buried auxiliary tube, pre-buried slotting pipe along armored concrete supporting
The normal direction of layer surface arranges that one end extends to supporting layer surface toward branch sheath internal stretch, the other end.Pre-buried peripheral tubes,
The pre-buried depth of pre-buried auxiliary tube is 52cm, diameter 50mm, length 57cm, the pre- buried depth of pre-buried slotting pipe and empty built-in pipe
Degree is 56cm, and length 61mm, pre-buried slotting pipe diameter is 50mm, and empty pre-buried pipe diameter is 63mm, and with tied silk by pre-buried week
Bian Guan, pre-buried auxiliary tube, pre-buried slotting pipe both ends are successively bound on steel ring at regular intervals respectively.The two of empty built-in pipe
Tied silk is bundled and is tensed respectively at end, and the other end of tied silk is bound respectively on the side of pre-buried slotting pipe steel ring 13, and inner ring is single
Tied silk is bound at the both ends of pre-buried auxiliary tube respectively, and the tied silk other end and three have fixed pre-buried auxiliary tube binding, will be pre-buried effective
Polybag seals its upper and lower opening；
4) in spray anchor layer surface construction waterproof layer, with lining trolley along abutment wall and arch formwork erection, casting concrete is simultaneously consolidated.Thick bottom
For 56cm.
In the present invention, pre-buried slotting pipe steel ring 13 is triangle, pre-buried auxiliary tube steel ring 16, pre-buried peripheral tubes reinforcing bar
Circle 18 is identical as tunnel cross sectional shape, and top is arc, and lower part is rectangle.
Claims (4)
1. the arrangement that trouble or opening armored concrete branch sheath embedded hole are opened in a kind of tunnel or tunnel, it is characterised in that:
Including embedded hole (1), the embedded hole (1) includes that pre-buried periphery hole (9), the single pre-buried via hole (8) of inner ring, outer ring are pre-buried auxiliary
Help hole (7), pre-buried keyhole (6) and empty embedded hole (5)；Empty embedded hole (5) is located at pre-buried keyhole (6) area defined
It is interior；The length direction of embedded hole (1) is vertical with armored concrete supporting layer surface, and one end is toward branch sheath internal stretch, the other end
Extend to supporting layer surface；Pre-buried periphery hole (9) is distributed in tunnel or tunnel and opens on trouble or opening contour line, pre-buried periphery hole
(9), single pre-buried via hole (8) depth of inner ring is less than branch covering thickness；Pre-buried keyhole (6) and empty embedded hole (5) depth with
Branch covering thickness is identical, and empty embedded hole (5) diameter is greater than or equal to other apertures.
2. the cloth that trouble or opening armored concrete branch sheath embedded hole are opened in a kind of tunnel according to claim 1 or tunnel
Set the construction method of mode, which comprises the following steps:
1) it after tunnel or drift section are excavated to out trouble or opening, drills after removing the floating dust for opening trouble or opening, landwaste,
Hollow bolt (2) are inserted into hole, and anchor pole extension elongation is made to be less than branch covering thickness, is added gasket in tail portion, is infused after screwing on nut
Slurry, cableway net (4) simultaneously bind with anchor pole (2), then spray anchor, form spray anchor layer；
2) the pre-buried slotting pipe steel ring (13) being fixedly connected with anchor pole (2), pre-buried auxiliary tube steel are set up outside spray anchor layer surface
Rib ring (16), pre-buried peripheral tubes steel ring (18), the shape of three steel rings respectively with the pre-buried periphery hole of opening trouble or opening
(9), pre-buried via hole (7), pre-buried keyhole (6) contour line are identical, and steel is set up in Vertical tunnel middle line direction at a certain distance
Arch (3) then arranges one layer of same steel ring with preceding layer steel ring place spaced apart, and steel ring includes pre-buried draws
Barrel steel ring (13), pre-buried auxiliary tube steel ring (16), pre-buried peripheral tubes steel ring (18), and welded with anchor pole (2), make two
Plane where layer steel ring is parallel；
3) by pre-buried peripheral tubes (17), the pre-buried auxiliary tube in outer ring (14) and pre-buried slotting pipe (11) perpendicular to armored concrete supporting
Layer surface arrangement, toward branch sheath internal stretch, the other end extends to supporting layer surface for one end, pre-buried peripheral tubes (17), pre-buried auxiliary
The pre-buried depth of pipe (14) is helped to be less than branch covering thickness, the pre-buried depth of pre-buried slotting pipe (11) is branch covering thickness, and with bundle
Silk (12) by pre-buried peripheral tubes (17), the pre-buried auxiliary tube in outer ring (14), pre-buried slotting pipe (11) both ends are successively bound respectively is having
On two layers of steel ring of one fixed spacing；The both ends of empty built-in pipe (10) are used tied silk (12) to bundle respectively and are tensed, tied silk (12)
The other end is vertically bound on the side of pre-buried slotting pipe steel ring (13), and the both ends of the single pre-buried auxiliary tube of inner ring (15) are tied up respectively
Upper tied silk, the tied silk other end and three pre-buried auxiliary tubes in the outer ring fixed (14) bundle, and all pre-buried pipe plastics is thin
Film seals its upper and lower opening；
4) gunite concrete is completely covered steel arch-shelf (3) again, forms multiple spray-up；
5) it in multiple spray-up surface construction waterproof layer, is poured mixed along abutment wall, arch arrangement reinforcing bar (20) with lining trolley formwork erection
Solidifying soil simultaneously consolidates.
3. the arrangement side that trouble or the embedded hole that is open are opened in a kind of armored concrete supporting tunnel according to claim 1 or tunnel
The construction method of formula, which comprises the following steps:
1) it after tunnel or drift section are excavated to out trouble or opening, drills after removing the floating dust for opening trouble or opening, landwaste,
Hollow bolt (2) are inserted into hole, and anchor pole extension elongation is made to be less than branch covering thickness, is added gasket in tail portion, is infused after screwing on nut
Slurry, cableway net (4) simultaneously bind with anchor pole (2), then spray anchor, form spray anchor layer；
2) the pre-buried slotting pipe steel ring (13) being fixedly connected with anchor pole (2), pre-buried auxiliary tube steel are set up outside spray anchor layer surface
Rib ring (16), pre-buried peripheral tubes steel ring (18), the shape of three steel rings respectively with the pre-buried periphery hole of opening trouble or opening
(9), pre-buried via hole (7), pre-buried keyhole (6) contour line are identical, and steel is set up in Vertical tunnel middle line direction at a certain distance
Arch (3), then with arrange before pre-buried slotting pipe steel ring (13), pre-buried auxiliary tube steel ring (16), pre-buried peripheral tubes
Steel ring (18) place spaced apart arranges three identical pre-buried slotting pipe steel rings (13), fixed pre-buried auxiliary tube reinforcing bar
(16), pre-buried peripheral tubes steel ring (18) are enclosed, and are fixedly connected with steel ring with anchor pole (2)；
3) by pre-buried peripheral tubes (17), the pre-buried auxiliary tube in outer ring (14) and pre-buried slotting pipe (11) perpendicular to armored concrete supporting
Layer surface arrangement, toward branch sheath internal stretch, the other end extends to supporting layer surface for one end, pre-buried peripheral tubes (17), pre-buried auxiliary
The pre-buried depth of pipe (14) is helped to be less than branch covering thickness, the pre-buried depth of pre-buried slotting pipe (11) is branch covering thickness, and with bundle
Silk (12) by pre-buried peripheral tubes (17), the pre-buried auxiliary tube in outer ring (14), pre-buried slotting pipe (11) both ends are successively bound respectively is having
On the steel ring of one fixed spacing；The both ends of empty built-in pipe (10) use respectively tied silk (12) bundle and tense, tied silk (12) it is another
For the vertical binding in end on the side of pre-buried slotting pipe steel ring (13), bundle is bound at the both ends of the single pre-buried auxiliary tube of inner ring (15) respectively
Silk, the tied silk other end and three pre-buried auxiliary tubes in the outer ring fixed (14) bundle, and all pre-buried effective plastic films are sealed
Firmly its upper and lower opening；
4) it in spray anchor layer surface construction waterproof layer, is then poured along abutment wall, arch arrangement reinforcing bar (20) with lining trolley formwork erection
Concrete simultaneously consolidates.
4. the cloth that trouble or the embedded hole that is open are opened in a kind of armored concrete supporting tunnel according to claim 2 or 3 or tunnel
Set the construction method of mode, it is characterised in that: step 1) has another construction method, and tunnel or drift section are opened trouble or opened
After at mouthful, in floating dust, the landwaste for opening trouble or opening with high-pressure blast and blowing off scar, just pneumatically placed concrete is carried out in net scar, to mixed
It is drilled, is inserted into hollow bolt (2), and anchor pole extension elongation is made to be less than branch covering thickness with drilling machine after the solidifying thick solidification of soil,
Tail portion shimming, screws on nut grouting behind shaft or drift lining, and cableway net (4) is welded with anchor pole (2) or bound with iron wire.
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| CN110067581B (en) | 2020-10-02 |
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