CN110439572A - A kind of ductule zero brushes slope and appears construction technology - Google Patents
A kind of ductule zero brushes slope and appears construction technology Download PDFInfo
- Publication number
- CN110439572A CN110439572A CN201910779616.6A CN201910779616A CN110439572A CN 110439572 A CN110439572 A CN 110439572A CN 201910779616 A CN201910779616 A CN 201910779616A CN 110439572 A CN110439572 A CN 110439572A
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- Prior art keywords
- ductule
- tunnel
- slope
- excavation
- construction
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- 238000010276 construction Methods 0.000 title claims abstract description 39
- 238000005516 engineering process Methods 0.000 title claims abstract description 19
- 238000009412 basement excavation Methods 0.000 claims abstract description 28
- 210000005239 tubule Anatomy 0.000 claims abstract description 22
- 239000011435 rock Substances 0.000 claims abstract description 7
- 230000005641 tunneling Effects 0.000 claims abstract description 5
- 238000007569 slipcasting Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000008676 import Effects 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- 125000003367 polycyclic group Chemical group 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000009411 base construction Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000013213 extrapolation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Soil Sciences (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The embodiment of the invention discloses a kind of ductule zero brush slopes to appear construction technology, is related to technical field of tunnel construction.Heavy grade hipped end degree in tunnel to be onstructed is greater than 40 °, and light grade hipped end degree is less than 25 °, comprising the following steps: S1, tunnel excavation are unidirectionally tunneled from light grade end to heavy grade end；S2, advanced tubule spacing is adjusted at the default hole out for reaching heavy grade end, enhances advance support；S3, excavation of appearing；S4, the construction of open cut tunnel section；Advance support described in step S2 is 2~5m before reaching out hole, lays polycyclic advanced tubule, and the circumferential spacing of advanced tubule is 20cm, and two groups of advanced tubules of tunneling direction mutually overlap, and carries out slip casting to advanced tubule to reinforce country rock.Appeared using unidirectionally being tunneled from outlet to import, and because in hole pipe roof construction restrictive condition it is big, the embodiment of the present invention by solid matter ductule replace hole super-front large pipe shed, reduce hole brush slope destroyed caused by environment, it is ensured that construction safety.
Description
Technical field
The present embodiments relate to technical field of tunnel construction, and in particular to a kind of ductule zero brushes slope and appears work of constructing
Skill.
Background technique
With rapid economic development, the various traffic base construction demands such as rail traffic, highway gradually increase, and are constructing
It inevitably needs to pass through some obstructions using tunneling in journey.
The import gradient is larger when constructing tunnel, and dense vegetation, big machinery cannot be introduced into, and construct extremely difficult, Er Qieguan
Outer limb is larger when canopy is constructed, and easily causing pipe canopy lower section soil layer in work progress, there are wild effects, and large area brush slope is to ring
Border damages, and constructs dangerous.
Summary of the invention
Brush slope for this purpose, the embodiment of the present invention provides a kind of ductule zero and appear construction technology, with solve in the prior art by
Large area brush slope welding, the unsafe problem of construction are caused into hole in brush slope greatly.
To achieve the goals above, the embodiment of the present invention provides the following technical solutions:
According to a first aspect of the embodiments of the present invention, the ductule zero brush slope is appeared construction technology, tunnel great Po to be onstructed
It spends hipped end degree and is greater than 40 °, light grade hipped end degree is less than 25 °, it is characterised in that: the ductule zero brushes slope and appears construction technology
The following steps are included:
S1, tunnel excavation are unidirectionally tunneled from light grade end to heavy grade end；
S2, advanced tubule spacing is adjusted at the default hole out for reaching heavy grade end, enhances advance support；
S3, excavation of appearing；
S4, the construction of open cut tunnel section；
The circumferential spacing of advanced tubule is 20cm in step S2, and arch performs a ring advanced tubule in every hole Pin, is dug
Two groups of advanced tubules into direction mutually overlap, and carry out slip casting to advanced tubule to reinforce country rock.
Further, excavation of appearing described in step S3 is excavated using the interim inverted arch method of three steps.
Further, the interim inverted arch method of three steps the following steps are included:
S301, top bar is excavated, performs the preliminary bracing on top bar base tunnel periphery, base tunnel bottom performs top bar and temporarily faces upward
Arch closes face；
S302, after lagging behind top bar a distance, step in excavation performs the initial stage branch on middle step base tunnel periphery
Shield, performs the interim inverted arch of middle step；
S303, in lagging behind one section of step away from height after, excavation is got out of a predicament or an embarrassing situation, and the initial stage branch on base tunnel periphery of getting out of a predicament or an embarrassing situation is performed
Shield, performs interim inverted arch of getting out of a predicament or an embarrassing situation.
Further, appear described in step S3 excavation base tunnel width be 1m, be highly 2m.
Further, the circumferential spacing of advanced tubule described in step S2 is 20cm.
Further, appear before excavation described in step S3, construction intercepts water day other than Tunnel slope line 5m out
Ditch.
Further, in step S4 in the construction of open cut tunnel section, the open cut tunnel section supporting open cut tunnel arch of at least 5m after appearing.
The embodiment of the present invention has the advantages that
The embodiment of the present invention is used unidirectionally to tunnel from outlet to import and be appeared, and because of pipe roof construction restrictive condition in hole
Greatly, the embodiment of the present invention replaces hole super-front large pipe shed by solid matter ductule, reduces hole brush slope and destroys caused by environment,
Ensure construction safety.
Detailed description of the invention
It, below will be to embodiment party in order to illustrate more clearly of embodiments of the present invention or technical solution in the prior art
Formula or attached drawing needed to be used in the description of the prior art are briefly described.It should be evident that the accompanying drawings in the following description is only
It is merely exemplary, it for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing amplification of offer obtains other implementation attached drawings.
Structure depicted in this specification, ratio, size etc., only to cooperate the revealed content of specification, for
Those skilled in the art understands and reads, and is not intended to limit the invention enforceable qualifications, therefore does not have technical
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the function of the invention that can be generated
Under effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents can cover.
Fig. 1 is that the ductule zero that provides of the embodiment of the present invention 1 brushes slope and appears the structural schematic diagram of construction technology；
Fig. 2 is that the ductule zero that provides of the embodiment of the present invention 1 brushes slope and appears the flow diagram of construction technology；
Fig. 3 is the schematic diagram of the interim inverted arch method of three steps of the embodiment of the present invention 1；
In figure: 1- heavy grade end 2- light grade end 3- goes out arch 6- open cut tunnel in the hole 4- advanced tubule 5- of hole and encircles
The interim inverted arch 11- of the step 12- that gets out of a predicament or an embarrassing situation gets out of a predicament or an embarrassing situation and faces in step 10- in the interim inverted arch 9- of frame 7- top bar 8- top bar
When inverted arch 13- lock foot anchor tube.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.Institute in this specification
Such as "upper" of reference, "lower", "left", "right", " centre " term, be merely convenient to the clear of narration, rather than to limit
The enforceable range of the present invention, relativeness are altered or modified, under the content of no substantial changes in technology, when being also considered as this hair
Bright enforceable scope.
Referring to Fig. 1~2, arrow is the practical tunneling direction in tunnel in Fig. 1, and heavy grade hipped end degree in tunnel to be onstructed is 45 °, is planted
Dense, big machinery cannot be introduced into, and light grade hipped end degree is 15 °, and the ductule zero brush slope construction technology of appearing includes following
Step:
S1, tunnel excavation are unidirectionally tunneled from light grade end 2 to heavy grade end 1；
S2, advanced tubule spacing is adjusted at the default hole 3 out for reaching heavy grade end, enhances advance support；
S3, excavation of appearing；
S4, the construction of open cut tunnel section；
Because whole buried depth is shallower, pipe roof construction once construct distance it is longer, behind increase advance support effect it is poor, extrapolation
Angle is larger, and easily causing pipe canopy lower section soil layer in work progress, there are wild effects, so advance support is to arrive in step S2
The circumferential spacing of polycyclic advanced tubule 4 is adjusted to 20cm by 3m before up to hole 3 out, and it is advanced to perform a ring for arch 5 in every hole Pin
Two groups of advanced tubules 4 of ductule 4, tunneling direction mutually overlap, and carry out slip casting to advanced tubule 4 to reinforce country rock.It is small
Pilot tunnel uses hand excavation, observes the Change in surrounding rocks situation on hole top in digging process in time, reduces the disturbance pushed up to hole.
Appear before excavation described in step S3, construction intercepts water gutter other than 3 side slope line 5m of hole out, it is ensured that goes out
The draining of hole position is unimpeded.Schedule ahead measurement group is determined position of appearing, and carries out unwrapping wire mark to openings position, arranges
Openings position vegetation is purged by construction personnel；Essence is carried out to front of tunnel heading country rock using a variety of advance geologic prediction means
Quasi- judgement；Monitoring measurement personnel survey more than twice, to data in time to phase monitoring data in the earth's surface and hole appeared in range
It closes administrative staff to report, and is coped in time for counter-measure is formulated in advance；It is existing without infiltration in period Dong Ding position of appearing
As rainfall can be effectively discharged by the gutter that intercepts water, and self is preferable in hole.
Referring to Fig. 3, excavation of appearing in step S3 is excavated using the interim inverted arch method of three steps.The interim inverted arch method of three steps is specific
The following steps are included:
S301, excavate top bar 7, top bar 7 uses mechanical engagement hand excavation, every circulation excavation 0.6m, after excavation and
When perform the preliminary bracing on top bar base tunnel periphery, base tunnel bottom performs the interim inverted arch 8 of top bar, and lock foot anchor tube 13 is utilized to increase
By force, lock foot anchor tube 13 is effectively connect with arch 5 in hole, closes face；
S302, after lagging behind 7 a distance of top bar, step 9 in excavation perform the initial stage branch on middle step base tunnel periphery
Shield, performs the interim inverted arch 10 of middle step；
S303, in lagging behind 9 one sections of step away from height after, excavation gets out of a predicament or an embarrassing situation 11, performs the initial stage on base tunnel periphery of getting out of a predicament or an embarrassing situation
Supporting performs interim inverted arch 12 of getting out of a predicament or an embarrassing situation.
Middle step 9 gets out of a predicament or an embarrassing situation 11 using control Blasting Excavation, excavates drilling depth no more than arch 5 in two holes Pin, and or so
Two sides are staggered two Pin or more, and it is 4 that each arch springing position lock foot anchor tube 13, which increases, effectively connect with reinforcing bar, and immediate support；Out
Within the scope of the 5m of hole position, 5 spacing of arch in hole is adjusted to 0.5m/ Pin, strengthening supporting measure, guarantee section overburden layer of appearing is relatively thin
The stabilization of position.
The appear base tunnel width of excavation of step S3 is 1m, is highly 2m, appears to reduce and excavate range, it is ensured that hole top of appearing
The stability of soil layer position.The circumferential spacing of advanced tubule 4 is 20cm in step S2.Arch 5 applies a ring in the hole every two Pin
Advanced tubule 4 is that 4.5m ductule mutually overlaps realization ductule solid matter arrangement by joint length；It is heavy to prevent
It drops, the settling amount of 25cm is reserved within the scope of Portal Section 20m, avoid the occurrence of and owe the influence later period supporting quality such as digging.
In step S4 in the construction of open cut tunnel section, the open cut tunnel section supporting open cut tunnel arch 6 of at least 5m after appearing.Tunnel outlet follows
The principle of " early going out into evening ", reserves enough lining cutting spaces by open cut tunnel arch 6, adds preliminary bracing, realizes tunnel outlet " evening
Out ".Easily soften because section country rock of appearing meets water, so that bearing capacity is lost, to prevent construction period rainfall from causing to tunnel excavation
It influences, guarantees its own bearing capacity, covered in the position Dong Ding using colour bar cloth；Construction period supervises reinforcement in earth's surface and hole
Control measures, and reports without delay detection data, and project leadership takes timely measure for data variation.
The embodiment of the present invention is used unidirectionally to tunnel from outlet to import and be appeared, and because of pipe roof construction restrictive condition in hole
Greatly, the embodiment of the present invention replaces hole super-front large pipe shed by solid matter ductule, reduces hole brush slope and destroys caused by environment,
Realize that zero brush slope is appeared, it is ensured that construction safety.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (7)
- The construction technology 1. a kind of brush of ductule zero slope is appeared, heavy grade hipped end degree in tunnel to be onstructed are greater than 40 °, light grade hipped end degree Less than 25 °, it is characterised in that: the ductule zero brush slope appear construction technology the following steps are included:S1, tunnel excavation are unidirectionally tunneled from light grade end to heavy grade end；S2, advanced tubule spacing is adjusted at the default hole out for reaching heavy grade end, enhances advance support；S3, excavation of appearing；S4, the construction of open cut tunnel section；The circumferential spacing of advanced tubule described in step S2 is 20cm, and two groups of advanced tubules of tunneling direction mutually overlap, Slip casting is carried out to reinforce country rock to advanced tubule.
- The construction technology 2. brush of ductule zero according to claim 1 slope is appeared, it is characterised in that: appear described in step S3 It excavates and is excavated using the interim inverted arch method of three steps.
- The construction technology 3. brush of ductule zero according to claim 2 slope is appeared, it is characterised in that: three steps are interim Inverted arch method the following steps are included:S301, top bar to be excavated, performs the preliminary bracing on top bar base tunnel periphery, base tunnel bottom performs the interim inverted arch of top bar, Close face；S302, after lagging behind top bar a distance, step in excavation performs the preliminary bracing on middle step base tunnel periphery, applies Do the interim inverted arch of middle step；S303, in lagging behind one section of step away from height after, excavation is got out of a predicament or an embarrassing situation, and is performed the preliminary bracing on base tunnel periphery of getting out of a predicament or an embarrassing situation, is applied It gets out of a predicament or an embarrassing situation interim inverted arch.
- The construction technology 4. brush of ductule zero according to claim 1 slope is appeared, it is characterised in that: appear described in step S3 The base tunnel width of excavation is 1m, is highly 2m.
- The construction technology 5. brush of ductule zero according to claim 1 slope is appeared, it is characterised in that: advanced described in step S2 The circumferential spacing of ductule is 20cm.
- The construction technology 6. brush of ductule zero according to claim 1 slope is appeared, it is characterised in that: carrying out described in step S3 Excavation of appearing before, construction intercepts water gutter other than Tunnel slope line 5m out.
- The construction technology 7. brush of ductule zero according to claim 1 slope is appeared, it is characterised in that: open cut tunnel section is applied in step S4 In work, the open cut tunnel section supporting open cut tunnel arch of at least 5m after appearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910779616.6A CN110439572A (en) | 2019-08-22 | 2019-08-22 | A kind of ductule zero brushes slope and appears construction technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910779616.6A CN110439572A (en) | 2019-08-22 | 2019-08-22 | A kind of ductule zero brushes slope and appears construction technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110439572A true CN110439572A (en) | 2019-11-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910779616.6A Pending CN110439572A (en) | 2019-08-22 | 2019-08-22 | A kind of ductule zero brushes slope and appears construction technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN110439572A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392502A (en) * | 2020-11-19 | 2021-02-23 | 北京市水利规划设计研究院 | Construction method of tunnel |
| CN114263478A (en) * | 2021-12-25 | 2022-04-01 | 中铁二局集团有限公司 | Construction method for karst tunnel to penetrate through deep gravel soil layer |
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2019
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| CN103628885A (en) * | 2013-11-05 | 2014-03-12 | 中交一公局第三工程有限公司 | Tunnel exit cover-excavation construction method of Ultra-shadow buried tunnel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392502A (en) * | 2020-11-19 | 2021-02-23 | 北京市水利规划设计研究院 | Construction method of tunnel |
| CN112392502B (en) * | 2020-11-19 | 2022-04-29 | 北京市水利规划设计研究院 | Construction method of tunnel |
| CN114263478A (en) * | 2021-12-25 | 2022-04-01 | 中铁二局集团有限公司 | Construction method for karst tunnel to penetrate through deep gravel soil layer |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191112 |
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