CN110500120A - A kind of tunnel large size landslide emergency immediate processing method - Google Patents
A kind of tunnel large size landslide emergency immediate processing method Download PDFInfo
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- CN110500120A CN110500120A CN201910866654.5A CN201910866654A CN110500120A CN 110500120 A CN110500120 A CN 110500120A CN 201910866654 A CN201910866654 A CN 201910866654A CN 110500120 A CN110500120 A CN 110500120A
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- 238000003672 processing method Methods 0.000 title description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 119
- 239000010959 steel Substances 0.000 claims abstract description 119
- 238000000034 method Methods 0.000 claims abstract description 35
- 238000009412 basement excavation Methods 0.000 claims abstract description 28
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 28
- 238000010276 construction Methods 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 239000011440 grout Substances 0.000 claims abstract description 7
- 210000005239 tubule Anatomy 0.000 claims abstract description 4
- 241000209202 Bromus secalinus Species 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000011083 cement mortar Substances 0.000 claims description 15
- 239000002002 slurry Substances 0.000 claims description 15
- 238000005553 drilling Methods 0.000 claims description 13
- 238000007363 ring formation reaction Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 238000007569 slipcasting Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000013213 extrapolation Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 235000019082 Osmanthus Nutrition 0.000 description 1
- 241000333181 Osmanthus Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 208000037805 labour Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
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- 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
- 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
-
- 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
- E21D11/14—Lining predominantly with metal
-
- 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- 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
- E21F11/00—Rescue devices or other safety devices, e.g. safety chambers or escape ways
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Pulmonology (AREA)
- Emergency Management (AREA)
- Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses the methods that a kind of burst large-scale landslide emergency in tunnel is quickly handled, comprising: has applied preliminary bracing to the body that collapses or two lining sections use I-steel temporarily to reinforce；To face Bolt net and jet closing of collapsing；Injecting grout through steel perforated pipe reinforcing is carried out to the body that collapses, advanced tubule and super-front large pipe shed are applied to the body section arch that collapses, and implements pre-grouting reinforcing；It excavates arch and rescues pilot tunnel I, stage excavation collapsing side has reinforced the body that collapses, and applies radial grouting with small pipe to abutment wall and reinforce；Layering partial excavation collapses body II, III, IV, V, VI, VII, is layered partial excavation, and set up steel arch-shelf；According to monitoring and measurement data, interim perpendicular support and false stull are removed step by step, applies secondary liner structure in time；Earth's surface, which is collapsed, cheats backfill and the processing of top drainage system, restores front area surface construction in hole.The present invention has the characteristics that safety, rapidity, high efficiency, at low cost.
Description
Technical field
The present invention relates to tunneling technique field, in particular to a kind of tunnel large size landslide emergency immediate processing method.
Background technique
Tunnel determines its tool as underground concealed property engineering, engineering properties, local environment, the complicated and changeable of risk source
The professionalism of high risk.In recent years, Tunnel collapse roof fall successively occurs in Tunnel Engineering construction, dash forward mud, gas of water burst it is quick-fried
Fried, threat neighbour's structures cause huge person property to lose, safe shape using a lot of serious accidents of the types such as safe
Gesture very severe is given a lesson to very deep.
, there are the design reasons such as insufficient to engineering and hydrogeologic condition understanding, design is inconsiderate in the reason of Tunnel collapse,
The construction reasons such as there is violation operation, use inferior materials and turn out substandard goods, there are the natural causes such as sudden unpredictalbe meteorological disaster.Currently, common
The construction treating methods of processing tunnel large size landslide mainly have: 1, large-scale drilling machine is sued and laboured method；2, earth's surface excavating shaft is applied
Rescue method；3, detour pilot tunnel method.The above landslide processing method, by appointed condition, construction site, geological conditions, rescue team's ability
It is influenced etc. many unfavorable factors, there is only rescues to handle overlong time, and is not such as knowing that boundary hides unfavorable factor operating condition
The problems such as secondary disaster accident easily occurs for lower blindness construction processing.Especially it is limited or applies to using large-scale drilling mechanical condition
Problems are more prominent when the large-scale landslide of the prominent chance of the deep tunnel of detour pilot tunnel difficulty causes man-machine stranded.
Summary of the invention
The one kind provided it is an object of the invention to overcome disadvantages mentioned above has safety, rapidity, high efficiency, cost
Low tunnel large size landslide emergency immediate processing method.
The technical solution adopted by the present invention to solve the technical problems is:
The method that a kind of large-scale landslide emergency of tunnel burst of the invention is quickly handled, includes the following steps:
(1) preliminary bracing or two lining sections have been applied to 20m before the body that collapses temporarily to be reinforced using I-steel；
(2) to the body that collapses collapse face carry out Bolt net and jet closing；
(3) injecting grout through steel perforated pipe reinforcing is carried out to the body that collapses；
(4) advanced tubule and super-front large pipe shed are applied to the body section arch that collapses, and implements pre-grouting reinforcing；
(5) it excavates arch and rescues pilot tunnel I, rescue and equipment reparation are implemented to trapped person in hole at the first time；
(6) stage excavation collapsing side has reinforced the body that collapses, and applies radial grouting with small pipe to abutment wall and reinforce；It is layered partial excavation
Collapse body II, III, IV, V, VI, VII, is layered partial excavation, and set up steel arch-shelf；
(7) according to monitoring and measurement data, interim perpendicular support and false stull are removed step by step；
(8) according to monitoring and measurement data, secondary liner structure is applied in time；
(9) earth's surface, which is collapsed, cheats backfill and the processing of top drainage system, restores front area surface construction in hole.
The method that a kind of large-scale landslide emergency of above-mentioned tunnel burst is quickly handled, in which: step (1) uses I-steel pair
The 20m before body that collapses has applied preliminary bracing or two lining sections are temporarily reinforced, while closing face.
The method that a kind of large-scale landslide emergency of above-mentioned tunnel burst is quickly handled, in which: step (2) sprays in-network processing
To collapsing, the body face of collapsing is closed, and is first squeezed into long 22 spiral of φ and is positioned, and steel mesh is then laid, and steel mesh uses φ 8
Reinforcing bar sprays concrete 10-20cm.
The method that a kind of large-scale landslide emergency of above-mentioned tunnel burst is quickly handled, in which: step (3) is to the body that collapses using lock
Footnote starches steel floral tube and carries out grouting and reinforcing, and upper half section carries out grouting and reinforcing using lock footnote slurry steel floral tube, fills the water cement mortar；Under
Half section carries out grouting and reinforcing using radial grouting steel floral tube, fills the water cement mortar.
The method that a kind of large-scale landslide emergency of above-mentioned tunnel burst is quickly handled, in which: step (4) adopts grid steel frame
Footnote slurry steel floral tube is locked with φ 42 and carries out lock foot grouting and reinforcing, and in 1 foot support pad channel steel of I-steel, φ is set on grid steel frame
42 89 pre-grouting steel tube sheds of advanced big extrapolation angle slip casting ductule and φ, and implement pre-grouting and reinforced.
The method that a kind of large-scale landslide emergency of above-mentioned tunnel burst is quickly handled, in which: step (5) tunneling arch
Rescue pilot tunnel I, and interim perpendicular support and false stull are applied, the branch when digging, after rescue pilot tunnel perforation, at the first time to quilt in hole
Oppressive member implements rescue and equipment reparation.
The method that a kind of large-scale landslide emergency of above-mentioned tunnel burst is quickly handled, in which: step (6) stage excavation II
Portion, and the reinforcing of abutment wall radial grouting injecting grout through steel perforated pipe is set, cement mortar is filled the water, and apply interim perpendicular support and false stull, excavated
In the process, it such as finds the abutment wall I-steel applied deformation and invades limit, I-steel must be reset and replaced, I-steel and diameter
It is rigidly connected to slip casting steel floral tube, the branch when digging.It excavates drilling depth and is not more than a Pin I-steel spacing；
Stage excavation III, and the reinforcing of abutment wall radial grouting injecting grout through steel perforated pipe is set, fill the water cement mortar, and apply interim perpendicular support and
False stull in digging process, such as finds the abutment wall I-steel applied deformation and invades limit, must reset I-steel progress more
It changes, I-steel and radial grouting steel floral tube are rigidly connected, the branch when digging, and excavate drilling depth and are not more than a Pin I-steel spacing；
Stage excavation IV, setting abutment wall radial grouting injecting grout through steel perforated pipe is reinforced, and cement mortar is filled the water, and is applied interim perpendicular support, is excavated
In the process, it such as finds the abutment wall I-steel applied deformation and invades limit, I-steel must be reset and replaced, the branch when digging,
Abutment wall I-steel and inverted arch should close cyclization, excavate drilling depth and are not more than 1 spacing of a Pin I-steel；
Stage excavation V, apply false stull, stull and I-steel closing cyclization, the branch when digging；
Stage excavation VI, and false stull is applied, setting lock footnote slurry steel floral tube and radial grouting steel floral tube, the branch when digging；
It stage excavation VII, checks and improves whether inverted arch closes cyclization, when necessary setting lock footnote slurry steel floral tube and radial note
Steel floral tube is starched, the branch when digging.
The method that a kind of large-scale landslide emergency of above-mentioned tunnel burst is quickly handled, in which: step (9) is such as landslide range
Table has the hole that collapses, and the hole that should collapse to earth's surface carries out backfill processing, and performs drainage system；Synthesis is carried out to landslide section treatment effect to comment
Estimate, reach after returning to work requirement, recovery construction can be carried out to front face in hole.
Compared with prior art, the present invention having apparent beneficial effect, as can be known from the above technical solutions: the present invention is first
It takes and has applied preliminary bracing in front of body or two lining sections are temporarily reinforced to collapsing, for collapsing section rescue in hole and handle work peace is provided
All risk insurance barrier, dual safety protection；Then collapsing to the body that collapses in hole, face Bolt net and jet is closed, the internal injecting grout through steel perforated pipe that collapses is reinforced, collapsing section
Arch applies advanced tubule and large-scale lead pipe grouting is reinforced, it is ensured that tunnel perimeter adjoining rock stability and supporting structure system safety
Reliably, reliability is 1.25-1.6 times of other traditional emergency processing methods；It excavates arch and rescues pilot tunnel I, it can be quickly the
One time implemented rescue to trapped person in hole, when the more other large-scale landslide emergency processing method saving of method of the invention are rescued
Between 36-47%, save rescue cost 46-60%, embody people-oriented, life the First Concept；Trapped person sues and labours appear after be layered
Partial excavation collapses body II, III, IV, V, VI, VII, is layered partial excavation, and set up steel arch-shelf, this method compared with
Other tradition emergency processing methods excavate the comprehensive drilling depth fast 35% or more of linear meter(lin.m.), save for 35% or more duration；According to monitoring measurement number
According to two lining structures are applied, it can excavate quick-recovery tunnel front face fastly, terminate in advance landslide emergency processing work.To sum up institute
It states, the present invention is orderly reasonable, and processing quickly, therefore can be effectively reduced person property caused by landslide and lose.Suitable for large-scale drilling machine
When the large-scale landslide of the prominent chance of deep tunnel that tool condition was limited or applied detour pilot tunnel difficulty causes man-machine stranded, hole can be rescued in time
A kind of quick emergency processing method of the high-effect low cost such as equipment, construction method safety in interior passive oppressive member, repairing hole
Property it is high, processing quickly, rescue it is at low cost, therefore the present invention be it is a kind of it is safe and reliable, rapidly and efficiently, the landslide of economical rationality emergency it is fast
Fast processing method.
Detailed description of the invention
Fig. 1 is the sectional schematic diagram at present invention landslide tunnel.
Marked in the figure:
1, I-steel；2, grid steel frame；3, advanced big extrapolation angle slip casting ductule；4, pre-grouting steel tube shed；5, lock footnote slurry
Steel floral tube；6, channel steel；7, interim perpendicular support；8, false stull；9, radial grouting steel floral tube；10, secondary lining；11, collapse body；12,
Inverted arch.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and examples.
Referring to Fig.1, the method that a kind of tunnel large size of the invention landslide emergency is quickly handled, includes the following steps:
(1) preliminary bracing has been applied to 20m before the body that collapses using I-steel 1 or two lining sections is temporarily reinforced, while having closed area
Face；
(2) spray in-network processing closes 11 face of collapsing of body that collapses, and first squeezes into long 22 spiral of φ and is positioned, is then laid
Steel mesh, steel mesh use 8 reinforcing bar of φ, spray concrete 10-20cm；
(3) to collapse body 11 using lock footnote slurry steel floral tube 5 carry out grouting and reinforcing, upper half section using lock footnote starch steel floral tube 5 into
Row grouting and reinforcing fills the water cement mortar；Lower half section carries out grouting and reinforcing using radial grouting steel floral tube 9, fills the water cement mortar；
(4) footnote slurry steel floral tube 5 is locked using φ 42 to grid steel frame 2 and carries out lock foot grouting and reinforcing, and in 1 foot support pad slot of I-steel
Steel 6；The advanced big extrapolation angle slip casting ductule 3 of φ 42 and 89 pre-grouting steel tube shed 4 of φ are set on grid steel frame 2, and implemented
Pre-grouting is reinforced；
(5) tunneling arch rescues pilot tunnel I, and applies interim perpendicular support 7 and false stull 8, and the branch when digging, rescue pilot tunnel passes through
After logical, rescue and equipment reparation are implemented to trapped person in hole at the first time；
(6) stage excavation II, and 9 grouting and reinforcing of abutment wall radial grouting steel floral tube is set, cement mortar is filled the water, and apply interim perpendicular
Support 7 and false stull 8 in digging process, such as finds that the abutment wall I-steel 1 applied deforms and invades limit, must reset I-shaped
Steel 1 is replaced, and I-steel 1 and radial grouting steel floral tube 9 are rigidly connected, the branch when digging.It excavates drilling depth and is not more than a Pin I-shaped
1 spacing of steel；
Stage excavation III, and 9 grouting and reinforcing of abutment wall radial grouting steel floral tube is set, cement mortar is filled the water, and apply interim perpendicular support 7
With false stull 8, in digging process, such as finds the abutment wall I-steel 1 applied deformation and invade limit, I-steel 1 must be reset
It is replaced, I-steel 1 and radial grouting steel floral tube 9 are rigidly connected, the branch when digging, and excavate drilling depth and are not more than a Pin I-steel 1
Spacing；
Stage excavation IV, 9 grouting and reinforcing of abutment wall radial grouting steel floral tube is set, fills the water cement mortar, applies interim perpendicular support 7, opens
During digging, such as finds the abutment wall I-steel 1 applied deformation and invade limit, I-steel 1 must be reset and replaced, when digging
Branch, abutment wall I-steel 1 and inverted arch 12 should close cyclization, excavate drilling depth and are not more than 1 spacing of a Pin I-steel；
Stage excavation V, false stull 8 is applied, stull 8 and I-steel 1 close cyclization, the branch when digging；
Stage excavation VI, and false stull 8 is applied, setting lock footnote slurry steel floral tube 5 and radial grouting steel floral tube 9, when digging
Branch；
It stage excavation VII, checks and improves whether inverted arch 12 closes cyclization, when necessary setting lock footnote slurry steel floral tube 5 and radial direction
Slip casting steel floral tube 9, the branch when digging；
(7) according to monitoring and measurement data, interim perpendicular support 7, false stull 8 are removed step by step；
(8) according to monitoring and measurement data, secondary lining 10 is applied in time；
(9) such as landslide range earth's surface has the hole that collapses, and the hole that should collapse to earth's surface carries out backfill processing, and performs drainage system；To landslide section
Treatment effect carries out comprehensive assessment, reaches after returning to work requirement, can carry out recovery construction to front face in hole.
The present invention is applied to tunnel DK428+340-DK428+360 sections of Guizhou Province osmanthus Kunming Railway within Guizhou section large-scale landslide construction rescue
In, implementing by using processing method of the invention in rescue tunnel in trapped person and device procedures, successfully by 6 in hole
Trapped person all rescues outside hole and more heading equipments is repaired and replaced, success rate 100%, and the safety after work
Property assessment, be fully achieved specification and design requirement, and return to work and create favorable conditions for full tunnel.It is efficiently right that the present invention not only succeeds
The internal person property that collapses implements rescue, is also effectively guaranteed construction quality and construction safety.
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form, appoint
What is to the above embodiments according to the technical essence of the invention any simply to repair without departing from technical solution of the present invention content
Change, equivalent variations and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (8)
1. a kind of method that burst large-scale landslide emergency in tunnel is quickly handled, includes the following steps:
(1) preliminary bracing or two lining sections have been applied to the body that collapses temporarily to be reinforced using I-steel；
(2) to the body that collapses collapse face carry out Bolt net and jet closing；
(3) injecting grout through steel perforated pipe reinforcing is carried out to the body that collapses；
(4) advanced tubule and super-front large pipe shed are applied to the body section arch that collapses, and implements pre-grouting reinforcing；
(5) it excavates arch and rescues pilot tunnel I, rescue and equipment reparation are implemented to trapped person in hole at the first time；
(6) stage excavation collapsing side has reinforced the body that collapses, and applies radial grouting with small pipe to abutment wall and reinforce；It is layered partial excavation
Collapse body II, III, IV, V, VI, VII, is layered partial excavation, and set up steel arch-shelf；
(7) according to monitoring and measurement data, interim perpendicular support and false stull are removed step by step；
(8) according to monitoring and measurement data, secondary liner structure is applied in time；
(9) earth's surface, which is collapsed, cheats backfill and the processing of top drainage system, restores front area surface construction in hole.
2. the method that the large-scale landslide emergency of a kind of tunnel burst as described in claim 1 is quickly handled, in which: step (1) is adopted
Preliminary bracing has been applied to 20m before the body that collapses with I-steel (1) or two lining sections are temporarily reinforced, while having closed face.
3. the method that the large-scale landslide emergency of a kind of tunnel burst as described in claim 1 is quickly handled, in which: step (2) spray
In-network processing closes the body that collapses (11) face of collapsing, and first squeezes into long 22 spiral of φ and is positioned, then lays steel mesh,
Steel mesh uses 8 reinforcing bar of φ, sprays concrete 10-20cm.
4. the method that the large-scale landslide emergency of a kind of tunnel burst as described in claim 1 is quickly handled, in which: step (3) is right
Body (11) are collapsed using lock footnote slurry steel floral tube (5) progress grouting and reinforcing, and upper half section is infused using lock footnote slurry steel floral tube (5)
Slurry is reinforced, and cement mortar is filled the water；Lower half section carries out grouting and reinforcing using radial grouting steel floral tube (9), fills the water cement mortar.
5. the method that the large-scale landslide emergency of a kind of tunnel burst as described in claim 1 is quickly handled, in which: step (4) is right
Grid steel frame (2) locks footnote slurry steel floral tube (5) using φ 42 and carries out lock foot grouting and reinforcing, and in I-steel (1) foot support pad channel steel
(6), the 89 pre-grouting steel tube shed (4) of advanced big extrapolation angle slip casting ductule (3) and φ of φ 42 is set on grid steel frame (2),
And implements pre-grouting and reinforced.
6. the method that the large-scale landslide emergency of a kind of tunnel burst as described in claim 1 is quickly handled, in which: step (5) is opened
Arch of holing rescues pilot tunnel I, and applies interim perpendicular support (7) and false stull (8), the branch when digging, after rescue pilot tunnel penetrates through,
Rescue and equipment reparation are implemented to trapped person in hole at the first time.
7. the method that the large-scale landslide emergency of a kind of tunnel burst as described in claim 1 is quickly handled, in which: step (6) point
Layer excavates II, and abutment wall radial grouting steel floral tube (9) grouting and reinforcing is arranged, and fills the water cement mortar, and apply interim perpendicular support (7) and
False stull (8) in digging process, such as finds the abutment wall I-steel (1) applied deformation and invades limit, must reset I-steel
(1) it is replaced, I-steel (1) and radial grouting steel floral tube (9) are rigidly connected, the branch when digging, and excavate drilling depth and are not more than a Pin
I-steel (1) spacing；
Stage excavation III, and abutment wall radial grouting steel floral tube (9) grouting and reinforcing is set, cement mortar is filled the water, and apply interim perpendicular
It supports (7) and false stull (8), in digging process, such as finds that the abutment wall I-steel (1) applied deforms and invades limit, must set again
It sets I-steel (1) to be replaced, I-steel (1) and radial grouting steel floral tube (9) are rigidly connected, and the branch when digging excavates drilling depth not
Greater than Pin I-steel (1) spacing；
Stage excavation IV, abutment wall radial grouting steel floral tube (9) grouting and reinforcing is set, fills the water cement mortar, applies interim perpendicular support
(7), it in digging process, such as finds the abutment wall I-steel (1) applied deformation and invades limit, I-steel (1) progress must be reset
Replacement, the branch when digging, abutment wall I-steel (1) and inverted arch (12) should close cyclization, excavate drilling depth no more than between a Pin I-steel (1)
Away from；
It stage excavation V, applies false stull (8), stull (8) and I-steel (1) closing cyclization, the branch when digging；
Stage excavation VI, and false stull (8) are applied, setting lock footnote slurry steel floral tube (5) and radial grouting steel floral tube (9),
The branch when digging；
Stage excavation VII, check and improve whether inverted arch (12) closes cyclization, when necessary setting lock footnote slurry steel floral tube (5) and
Radial grouting steel floral tube (9), the branch when digging.
8. the method that the large-scale landslide emergency of a kind of tunnel burst as described in claim 1 is quickly handled, in which: step (10) is such as
Landslide range earth's surface has the hole that collapses, and the hole that should collapse to earth's surface carries out backfill processing, and performs drainage system；To landslide section treatment effect into
Row comprehensive assessment, reaches after returning to work requirement, can carry out recovery construction to front face in hole.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382509A (en) * | 2021-12-08 | 2022-04-22 | 中国华冶科工集团有限公司 | Section tunnel collapse construction method and support device |
| CN116446887A (en) * | 2023-06-20 | 2023-07-18 | 湖南省交通规划勘察设计院有限公司 | Tunnel construction method for existing partial collapse position of primary support section |
| CN116677417A (en) * | 2023-08-03 | 2023-09-01 | 中铁十六局集团有限公司 | Treatment device and treatment method for tunnel collapse cavity |
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| CN116446887B (en) * | 2023-06-20 | 2023-09-01 | 湖南省交通规划勘察设计院有限公司 | Tunnel construction method for existing partial collapse position of primary support section |
| CN116677417A (en) * | 2023-08-03 | 2023-09-01 | 中铁十六局集团有限公司 | Treatment device and treatment method for tunnel collapse cavity |
| CN116677417B (en) * | 2023-08-03 | 2023-09-22 | 中铁十六局集团有限公司 | Treatment device and treatment method for tunnel collapse cavity |
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