CN106640147A - Tunnel primary support steel arch frame lock foot fixing method - Google Patents
Tunnel primary support steel arch frame lock foot fixing method Download PDFInfo
- Publication number
- CN106640147A CN106640147A CN201611053250.7A CN201611053250A CN106640147A CN 106640147 A CN106640147 A CN 106640147A CN 201611053250 A CN201611053250 A CN 201611053250A CN 106640147 A CN106640147 A CN 106640147A
- Authority
- CN
- China
- Prior art keywords
- lock pin
- pipe
- anchor tube
- pin anchor
- steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 50
- 239000010959 steel Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 5
- 238000003466 welding Methods 0.000 claims abstract description 22
- 238000005553 drilling Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000012467 final product Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 6
- 239000011440 grout Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 1
- 238000013213 extrapolation Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- 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
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a tunnel primary support steel arch frame lock foot fixing method. The method comprises the following steps that 1, a seamless steel pipe is machined to be the fixed length, one end of the seamless steel pipe is machined to be sharp, the other end of the seamless steel pipe is machined to be an oblique angle of 30 degrees, grouting holes are formed in the pipe wall in the shape of quincunx, and then a locking anchor pipe is obtained; 2, a positioning plate is adopted for machining a pair of square steel frame positioning holes on a web of a profile steel frame; 3, screw-thread steel is adopted for being prepared into U-shaped clamp rings; 4, a drill pipe drills holes in the direction of steel frame positioning holes, and after the holes reach the designed depth, installation is conducted in place; 5, the two U-shaped clamp rings oppositely penetrate through the steel frame positioning holes and are clamped on the locking anchor pipe, and U-shaped clamp ring arc welding connection surface, the locking anchor pipe and a U-shaped clamp ring arc welding connection surface are formed through welding separately; 6, grouting is conducted after connection of a grouting pipe and the locking anchor pipe, and finally a grout stop valve is installed. Accordingly, the fixation of the locking anchor pipe on the tunnel primary support section steel arch frame can be effectively improved, tunnel primary support sinking and deformation are prevented, and the safety factor of tunnel construction is strengthened.
Description
Technical field
The present invention relates to highway engineering, railway engineering technical field of tunnel construction, more particularly to Tunnel steel arch
Frame locks pin fixed form.
Background technology
The fixing muscle that pin anchor tube is locked in traditional lock pin anchor tube construction technology is fixed on bow member outward flange, with lock pin anchor tube not
Can well connect, and in the early stage supporting steel arch-shelf outward flange need to reserve plumb joint to lock pin anchor tube, easy scratch, puncture tunnel
The splash guard of subsequent construction, needs to clear up on reserved lock pin anchor tube head before splash guard construction, and cleaning difficulty is big, time-consuming.Separately
Outward, the fixing muscle of pin anchor tube is locked due to being completed in the form of the bar weldering of arc welding side in bow member outward flange, bow member should in country rock
Under power effect, the easy sealing-off in fixing muscle welding position after pin anchor tube stress is locked, ruptured, come to nothing, become the thin of Tunnel
Weak link, lock pin anchor tube can not play due effect, cause Tunnel to sink, deform.Lock pin angle also should not be controlled
System, outer pin angle is not enough（＜ 30）Cause to lock pin anchor tube declines.
The content of the invention
The technical problem to be solved is to provide a kind of safe and reliable Tunnel steel arch frame lock foot and consolidates
Determine mode.
To solve the above problems, Tunnel steel arch frame lock foot fixed form of the present invention, including following step
Suddenly：
(1) the seamless steel pipe of Φ 42 is processed into into regular length, its one end is processed into point, and the other end is processed into 30οOblique angle, and
The spacing of 40cm is pressed on its tube wall in quincunx laying injected hole, lock pin anchor tube is obtained final product；
(2) adopt location-plate that a pair of vertical intervals are processed on the web of profile steel frame for 45mm square steelframe location hole, the steel
The axis of frame location hole and the profile steel frame is into 60οAngle；
(3) the screw-thread steel for adopting Φ 22mm, HRB400 makes arc section internal diameter for 45mm, the U-shaped card ring that length is 38.6cm；
(4) the steelframe location hole direction drilling by drilling rod in the profile steel frame, after reaching projected depth, by the lock
Pin anchor tube is installed in place along the steelframe pilot hole axes direction, makes the lock pin anchor tube closely connected with the profile steel frame, and makes
Its afterbody is flushed with the profile steel frame；
(5) the steelframe location hole by two U-shaped card rings in the profile steel frame is to wearing so as to be stuck in the lock pin
On anchor tube, and U-shaped card ring arc welding joint face, lock pin anchor tube and U-shaped card ring arc welding joint face are formed respectively by welding；
(6) Grouting Pipe is connected with the lock pin anchor tube, slurries is injected into the lock pin anchor tube by high-pressure injection pump, finally
Grouting stop-valve is installed.
A diameter of 8mm of the step (1) middle injected hole.
The step (2) middle steelframe location hole size be 25mm × 50mm.
The present invention has compared with prior art advantages below：
1st, the present invention in steelframe location hole of the U-shaped card ring in profile steel frame to wearing so as to be stuck in lock pin anchor tube on, and by weldering
Connect and formed respectively U-shaped card ring arc welding joint face, lock pin anchor tube and U-shaped card ring arc welding joint face, so as to lock pin anchor tube be locked
Extremely, one is formed with profile steel frame, enhances the fixation of lock pin, reaching prevents Tunnel from sinking, deforming, and strengthens
The purpose of safety for tunnel engineering coefficient.
2nd, the present invention processes square steelframe location hole of a pair of vertical intervals for 45mm on the web of profile steel frame, because
This, can reach and be accurately positioned lock pin anchor tube extrapolation angle, the purpose of enforced lock pin effect.
3rd, of the invention compared with traditional lock pin anchor tube construction technology, lock pin anchor tube afterbody can be flushed with bow member, eliminate outer
Dew plumb joint, facilitates subsequent handling to construct, and saves artificial.
4th, U-shaped card ring of the present invention with lock pin anchor tube combine closely, welding contact area increase, reduce lock pin anchor tube exist
The failure of pin anchor tube is locked under stress after sealing-off.
5th, invent with low cost, easy to implement.
Description of the drawings
The specific embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the present invention.
Fig. 2 is side schematic view of the present invention.
Fig. 3 is elevational schematic view of the present invention.
Fig. 4 is floor map of the present invention.
In figure：1-lock pin anchor tube；2-injected hole；3-profile steel frame；4-steelframe location hole；5-U-shaped card ring；6—U
Type snap ring arc welding joint face；7-lock pin anchor tube and U-shaped card ring arc welding joint face.
Specific embodiment
As shown in Fig. 1 ~ 4, Tunnel steel arch frame lock foot fixed form is comprised the following steps：
(1) the seamless steel pipe of Φ 42 is processed into into regular length, its one end is processed into point, and the other end is processed into 30οOblique angle, and
The spacing of 40cm is pressed on its tube wall in the quincunx injected hole 2 for laying a diameter of 8mm, lock pin anchor tube 1 is obtained final product.
(2) adopt location-plate that a pair of vertical intervals are processed on the web of profile steel frame 3 for 45mm, size be 25mm ×
The square steelframe location hole 4 of 50mm, the axis of the steelframe location hole 4 and profile steel frame 3 is into 60οAngle.
(3) the screw-thread steel for adopting Φ 22mm, HRB400 makes arc section internal diameter for 45mm, the U-shaped card ring that length is 38.6cm
5。
(4) the direction of steelframe location hole 4 drilling by drilling rod in profile steel frame 3, after reaching projected depth, by lock pin anchor tube 1
It is installed in place along the axis direction of steelframe location hole 4, makes lock pin anchor tube 1 closely connected with profile steel frame 3, and makes its afterbody and profile steel frame
3 flush.
(5) the steelframe location hole 4 pairs by two U-shaped card rings 5 in profile steel frame 3 is worn so as to be stuck on lock pin anchor tube 1, and
U-shaped card ring arc welding joint face 6, lock pin anchor tube and U-shaped card ring arc welding joint face 7 are formed respectively by welding.
Wherein：Pin anchor tube 1 will be locked with the integral lock pin anchor tube of the circular arc portion of U-shaped card ring 5 welding and U using arc welding technology
Type snap ring arc welding joint face 7.
Two both wings of U-shaped card ring 5 adopt double butt weld technology, by the welded closed of U-shaped card ring 5 into a ring closed, jail
Jail will lock the locking of pin anchor tube 1, and form one with profile steel frame 3.
(6) Grouting Pipe is connected with lock pin anchor tube 1, slurries are injected into lock pin anchor tube 1 by high-pressure injection pump, finally pacified
Dress grouting stop-valve.
Claims (3)
1. Tunnel steel arch frame lock foot fixed form, comprises the following steps：
(1) the seamless steel pipe of Φ 42 is processed into into regular length, its one end is processed into point, and the other end is processed into 30οOblique angle, and at it
The spacing that 40cm is pressed on tube wall is in quincunx laying injected hole（2）, obtain final product lock pin anchor tube（1）；
(2) using location-plate in profile steel frame（3）Web on process a pair of vertical intervals for 45mm square steelframe location hole
（4）, the steelframe location hole（4）With the profile steel frame（3）Axis into 60οAngle；
(3) the screw-thread steel for adopting Φ 22mm, HRB400 makes arc section internal diameter for 45mm, the U-shaped card ring that length is 38.6cm（5）；
(4) by drilling rod along the profile steel frame（3）On the steelframe location hole（4）Direction drills, after reaching projected depth, will
The lock pin anchor tube（1）Along the steelframe location hole（4）Axis direction is installed in place, and makes the lock pin anchor tube（1）With the type
Steel steelframe（3）It is closely connected, and its afterbody is made with the profile steel frame（3）Flush；
(5) by two U-shaped card rings（5）In the profile steel frame（3）On the steelframe location hole（4）To wearing so as to be stuck in
The lock pin anchor tube（1）On, and U-shaped card ring arc welding joint face is formed respectively by welding（6）, lock pin anchor tube and U-shaped card ring
Arc welding joint face（7）；
(6) by Grouting Pipe and the lock pin anchor tube（1）Connection, by high-pressure injection pump to the lock pin anchor tube（1）Interior injection slurry
Liquid, finally installs grouting stop-valve.
2. Tunnel steel arch frame lock foot fixed form as claimed in claim 1, it is characterised in that：The step (1) in
Injected hole（2）A diameter of 8mm.
3. Tunnel steel arch frame lock foot fixed form as claimed in claim 1, it is characterised in that：The step (2) in
Steelframe location hole（4）Size be 25mm × 50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611053250.7A CN106640147B (en) | 2016-11-25 | 2016-11-25 | Tunnel steel arch frame lock foot fixed form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611053250.7A CN106640147B (en) | 2016-11-25 | 2016-11-25 | Tunnel steel arch frame lock foot fixed form |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106640147A true CN106640147A (en) | 2017-05-10 |
| CN106640147B CN106640147B (en) | 2019-01-11 |
Family
ID=58811963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611053250.7A Active CN106640147B (en) | 2016-11-25 | 2016-11-25 | Tunnel steel arch frame lock foot fixed form |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106640147B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269303A (en) * | 2017-07-10 | 2017-10-20 | 中铁十局集团第四工程有限公司 | A kind of three arm rock drilling jumbo sets the fixing device and its application method of lock foot anchoring stock |
| CN107829757A (en) * | 2017-12-13 | 2018-03-23 | 中铁十局集团西北工程有限公司 | A kind of tunnel bracing members lock pin anchor tube positioner |
| CN108119168A (en) * | 2017-12-29 | 2018-06-05 | 青岛林川工程技术咨询有限公司 | A kind of device of the first branch steel arch-shelf shear stability of raising |
| CN108196034A (en) * | 2018-01-19 | 2018-06-22 | 合肥工业大学 | Simulate high-pressure slip-casting device and test method under buried stratum river channels |
| CN112647985A (en) * | 2020-12-28 | 2021-04-13 | 中国科学院武汉岩土力学研究所 | Combined supporting device of lock pin anchor pipe/anchor rod and steel arch frame and construction method |
| CN112814715A (en) * | 2021-01-07 | 2021-05-18 | 中铁十六局集团第三工程有限公司 | Novel locking anchor pipe construction fixing device and construction method thereof |
| CN113818915A (en) * | 2021-09-14 | 2021-12-21 | 山东大学 | Device and method for resisting steel arch centering settlement of weak surrounding rock tunnel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202055842U (en) * | 2011-05-25 | 2011-11-30 | 兰州交通大学 | Structure with connection with steel arch frame and locking anchor pipes of tunnel |
| CN202090934U (en) * | 2011-04-15 | 2011-12-28 | 中铁隧道集团有限公司 | Junction structure of H-shaped steel arch center and feet-lock anchor tubes in tunnel |
| CN202659251U (en) * | 2012-05-18 | 2013-01-09 | 中铁十二局集团有限公司 | Reinforcing connecting device of tunnel soft-weak/loess surrounding rock steel arch and locking foot anchor pipe |
| CN202745885U (en) * | 2012-01-20 | 2013-02-20 | 兰州交通大学 | Inclined type locking anchor pipe apparatus |
| CN103244147A (en) * | 2013-05-14 | 2013-08-14 | 中铁二十一局集团第四工程有限公司 | Construction method for locking anchor tubes of tunnel anchor-plate retaining steel frames |
| CN204152521U (en) * | 2014-09-18 | 2015-02-11 | 中铁建大桥工程局集团第二工程有限公司 | A kind of tunnel supporting and protection structure |
-
2016
- 2016-11-25 CN CN201611053250.7A patent/CN106640147B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202090934U (en) * | 2011-04-15 | 2011-12-28 | 中铁隧道集团有限公司 | Junction structure of H-shaped steel arch center and feet-lock anchor tubes in tunnel |
| CN202055842U (en) * | 2011-05-25 | 2011-11-30 | 兰州交通大学 | Structure with connection with steel arch frame and locking anchor pipes of tunnel |
| CN202745885U (en) * | 2012-01-20 | 2013-02-20 | 兰州交通大学 | Inclined type locking anchor pipe apparatus |
| CN202659251U (en) * | 2012-05-18 | 2013-01-09 | 中铁十二局集团有限公司 | Reinforcing connecting device of tunnel soft-weak/loess surrounding rock steel arch and locking foot anchor pipe |
| CN103244147A (en) * | 2013-05-14 | 2013-08-14 | 中铁二十一局集团第四工程有限公司 | Construction method for locking anchor tubes of tunnel anchor-plate retaining steel frames |
| CN204152521U (en) * | 2014-09-18 | 2015-02-11 | 中铁建大桥工程局集团第二工程有限公司 | A kind of tunnel supporting and protection structure |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269303A (en) * | 2017-07-10 | 2017-10-20 | 中铁十局集团第四工程有限公司 | A kind of three arm rock drilling jumbo sets the fixing device and its application method of lock foot anchoring stock |
| CN107829757A (en) * | 2017-12-13 | 2018-03-23 | 中铁十局集团西北工程有限公司 | A kind of tunnel bracing members lock pin anchor tube positioner |
| CN108119168A (en) * | 2017-12-29 | 2018-06-05 | 青岛林川工程技术咨询有限公司 | A kind of device of the first branch steel arch-shelf shear stability of raising |
| CN108196034A (en) * | 2018-01-19 | 2018-06-22 | 合肥工业大学 | Simulate high-pressure slip-casting device and test method under buried stratum river channels |
| CN112647985A (en) * | 2020-12-28 | 2021-04-13 | 中国科学院武汉岩土力学研究所 | Combined supporting device of lock pin anchor pipe/anchor rod and steel arch frame and construction method |
| CN112814715A (en) * | 2021-01-07 | 2021-05-18 | 中铁十六局集团第三工程有限公司 | Novel locking anchor pipe construction fixing device and construction method thereof |
| CN113818915A (en) * | 2021-09-14 | 2021-12-21 | 山东大学 | Device and method for resisting steel arch centering settlement of weak surrounding rock tunnel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106640147B (en) | 2019-01-11 |
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