CN107514272A - A kind of anchor pole lasso trick for supporting cross-bedding development country rock - Google Patents
A kind of anchor pole lasso trick for supporting cross-bedding development country rock Download PDFInfo
- Publication number
- CN107514272A CN107514272A CN201610422752.6A CN201610422752A CN107514272A CN 107514272 A CN107514272 A CN 107514272A CN 201610422752 A CN201610422752 A CN 201610422752A CN 107514272 A CN107514272 A CN 107514272A
- Authority
- CN
- China
- Prior art keywords
- macropore
- anchor
- positive stop
- anchor pole
- country rock
- 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
- 239000011435 rock Substances 0.000 title claims abstract description 19
- 230000008093 supporting effect Effects 0.000 title claims abstract description 12
- 238000004873 anchoring Methods 0.000 claims abstract 2
- 230000015572 biosynthetic process Effects 0.000 claims abstract 2
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010008 shearing Methods 0.000 abstract description 6
- 239000000725 suspension Substances 0.000 description 3
- 241000761557 Lamina Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor 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)
- Piles And Underground Anchors (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a kind of anchor pole lasso trick for supporting cross-bedding development country rock, including hollow bolt（1）, anchor cable（2）, positive stop（3）；The hollow bolt（1）Inside is provided with macropore（12）, aperture（13）And macropore（12）With aperture（13）The limited step of formation（11）, macropore（12）Positioned at hollow bolt（1）Anchoring section；Positive stop（3）With anchor cable（2）One end be fixedly connected；Anchor cable（2）Through macropore（12）And aperture（13）；Positive stop（3）It is limited step（11）It is limited in macropore（12）It is interior.The present invention has good anti-shearing effect, and when anchor rod body is cut, its anchored end is still effective, it is spacing, fixed that positive stop in anchor pole is limited step, because the ability of anchor cable shearing resistance is stronger than anchor pole, so being not easy to be cut, can continue to play support action to country rock or side slope.
Description
Technical field
The present invention relates to a kind of anchor pole lasso trick, specifically a kind of anchor pole lasso trick for supporting cross-bedding development country rock, belong to suspension device field.
Background technology
Suspension roof support refers to a kind of its support reinforcement mode used in the earth's surface engineering and tunnel, stope etc. such as side slope, ground deep basal pit underground chamber are constructed.Have the advantages that cost is low, supporting effect is good, easy to operate, using flexible, occupancy are constructed, and headroom is few.
Cross-bedding is a kind of relatively common stratification type, also commonly referred to as diagonal bedding, and it is made up of a series of laminas for being diagonal to series of strata interface, and oblique series of strata can be combined in a manner of overlapping each other, interlock, cut.
Country rock that traditional suspension roof support is developed for cross-bedding, side slope etc. often do not have support action.Because in the presence of high tectonic stress, the strong changing of the relative positions can occur for the hard surrounding rock or side slope of cross-bedding development, and this changing of the relative positions can form shear action and cut anchor pole, and then lose anchorage effect.
The content of the invention
Present invention aims at a kind of anchor pole lasso trick for supporting cross-bedding development country rock is provided, remain able to play support action in the case that in country rock or side slope because tectonic stress acts on the changing of the relative positions occurs for the anchor pole lasso trick, anchor pole is cut.
To achieve the above object, a kind of anchor pole lasso trick for being used for tunnel at the country rock that cross-bedding is developed under the high tectonic stress of supporting, including hollow bolt, anchor cable, positive stop；The hollow bolt is internally provided with limited step, macropore is formed at anchor rod anchored section, free segment forms aperture；Positive stop is fixedly connected with one end of anchor cable；Anchor cable passes through macropore and aperture；Positive stop is limited step and is limited in macropore.
The present invention has good anti-shearing effect, and when anchor rod body is cut, its anchored end is still effective, it is spacing, fixed that positive stop in anchor pole is limited step, because the ability of anchor cable shearing resistance is stronger than anchor pole, so being not easy to be cut, can continue to play support action to country rock or side slope.Relative to common bolt and the combined supporting of anchor cable, the present invention need not be punched individually for anchor cable again, save process.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
In figure, 1, hollow bolt, 2, anchor cable, 3, positive stop, 4, spring, 11, limited step, 12, macropore, 13, aperture, 14, capping.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of anchor pole lasso trick for supporting cross-bedding development country rock, including hollow bolt 1, anchor cable 2, positive stop 3；The middle spare anchor 1 is internally provided with limited step 11, macropore 12 is formed at anchor rod anchored section, free segment forms aperture 13；Positive stop 3 is fixedly connected with one end of anchor cable 2；Anchor cable 2 passes through macropore 12 and aperture 13；Positive stop 3 is limited step 11 and is limited in macropore 12.
In use, elongation when the internal length in reserve of anchor cable 2 is pulled off for spare anchor bar 1, when hollow bolt 1 is pulled off, anchor cable 2 can be in tensioning state within the extremely short time, play anchorage effect.
The present invention has good anti-shearing effect, and when anchor rod body is cut, its anchored end is still effective, it is spacing, fixed that positive stop in anchor pole is limited step, because the ability of anchor cable shearing resistance is stronger than anchor pole, so being not easy to be cut, can continue to play support action to country rock or side slope.
Further, the anchored end of hollow bolt 1 is provided with capping 14, capping 14 be in order to avoid Anchor Agent enters anchor pole and so that hollow bolt 1 and anchor cable 2 are solidified as a whole, lose the effect of anchor cable 2.
Further, to adapt to large deformation the occurrence of, it is necessary to give anchor cable one prestressing force, is provided with spring 4 between positive stop 3 and limited step 11, and spring 4 is enclosed on anchor cable 2, elongation when its maximum compression distance is pulled off slightly larger than hollow bolt 1.When larger absciss layer occurs for country rock or side slope, when the body of rod of hollow bolt 1 is pulled off, because anchor cable 2 has been enter into Pre strained state, spring 4 can slowly discharge rock mass pressure, persistently produce support action to country rock.
Claims (3)
1. a kind of anchor pole lasso trick for supporting cross-bedding development country rock, it is characterised in that including hollow bolt（1）, anchor cable（2）, positive stop（3）；The hollow bolt（1）Inside is provided with macropore（12）, aperture（13）And macropore（12）With aperture（13）The limited step of formation（11）, macropore（12）Positioned at hollow bolt（1）Anchoring section；Positive stop（3）With anchor cable（2）One end be fixedly connected；Anchor cable（2）Through macropore（12）And aperture（13）；Positive stop（3）It is limited step（11）It is limited in macropore（12）It is interior.
A kind of 2. anchor pole lasso trick for supporting cross-bedding development country rock according to claim 1, it is characterised in that hollow bolt（1）Anchored end be provided with capping（14）.
3. a kind of anchor pole lasso trick for supporting cross-bedding development country rock according to claim 1 or 2, it is characterised in that in positive stop（3）And limited step（11）Between be provided withSpring（4）, spring（4）It is enclosed on anchor cable（2）On, its maximum compression distance is more than anchor pole（1）Elongation when being pulled off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610422752.6A CN107514272B (en) | 2016-06-16 | 2016-06-16 | Anchor rod lasso for supporting staggered bedding development surrounding rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610422752.6A CN107514272B (en) | 2016-06-16 | 2016-06-16 | Anchor rod lasso for supporting staggered bedding development surrounding rock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107514272A true CN107514272A (en) | 2017-12-26 |
| CN107514272B CN107514272B (en) | 2020-04-10 |
Family
ID=60720735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610422752.6A Active CN107514272B (en) | 2016-06-16 | 2016-06-16 | Anchor rod lasso for supporting staggered bedding development surrounding rock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107514272B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425231A (en) * | 2020-03-31 | 2020-07-17 | 中国矿业大学 | Long and short anchor cable coordinated energy absorption yielding device and construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2175829Y (en) * | 1993-07-14 | 1994-08-31 | 戴丽珍 | Expasion sleeve bolt |
| CN202431287U (en) * | 2011-12-12 | 2012-09-12 | 中国矿业大学 | Combined telescopic anchor rod |
| CN202810881U (en) * | 2012-09-26 | 2013-03-20 | 山东科技大学 | Novel expandable type yielding prestress grouting anchor cable |
| CN204754958U (en) * | 2015-07-16 | 2015-11-11 | 山东科技大学 | Precast prestressed concrete stock |
| CN105064359A (en) * | 2015-07-18 | 2015-11-18 | 高路恒 | Unbonded prestressed construction anchor rod |
-
2016
- 2016-06-16 CN CN201610422752.6A patent/CN107514272B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2175829Y (en) * | 1993-07-14 | 1994-08-31 | 戴丽珍 | Expasion sleeve bolt |
| CN202431287U (en) * | 2011-12-12 | 2012-09-12 | 中国矿业大学 | Combined telescopic anchor rod |
| CN202810881U (en) * | 2012-09-26 | 2013-03-20 | 山东科技大学 | Novel expandable type yielding prestress grouting anchor cable |
| CN204754958U (en) * | 2015-07-16 | 2015-11-11 | 山东科技大学 | Precast prestressed concrete stock |
| CN105064359A (en) * | 2015-07-18 | 2015-11-18 | 高路恒 | Unbonded prestressed construction anchor rod |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425231A (en) * | 2020-03-31 | 2020-07-17 | 中国矿业大学 | Long and short anchor cable coordinated energy absorption yielding device and construction method |
| CN111425231B (en) * | 2020-03-31 | 2021-03-26 | 中国矿业大学 | Long and short anchor cable coordinated energy absorption yielding device and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107514272B (en) | 2020-04-10 |
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