CN113217055A - Sectional type energy-absorbing anchor rod cable adapting to deformation of block-tied rock mass - Google Patents
Sectional type energy-absorbing anchor rod cable adapting to deformation of block-tied rock mass Download PDFInfo
- Publication number
- CN113217055A CN113217055A CN202110551025.0A CN202110551025A CN113217055A CN 113217055 A CN113217055 A CN 113217055A CN 202110551025 A CN202110551025 A CN 202110551025A CN 113217055 A CN113217055 A CN 113217055A
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- Prior art keywords
- anchor rod
- energy
- anchor
- absorbing
- section
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- 239000011435 rock Substances 0.000 title claims abstract description 29
- 238000010521 absorption reaction Methods 0.000 claims description 17
- 238000010008 shearing Methods 0.000 claims description 11
- 230000006978 adaptation Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
Classifications
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- 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
- 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
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- 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
- E21D21/008—Anchoring or tensioning means
-
- 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
- E21D21/0093—Accessories
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- 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)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
A sectional energy-absorbing anchor rod cable adapting to deformation of a block-tied rock body comprises an anchor head, an anchor rod section, an anchor cable section, an anchor rod and anchor cable switching energy-absorbing assembly, an anchor rod auxiliary switching sleeve, a tray and a nut; the anchor rod section quantity is a plurality of and divide into three types, including the head anchor rod section, middle anchor rod section and tail end anchor rod section, head anchor rod section quantity is one, the anchor head is fixed to be set up at head end anchor rod section front portion, tail end anchor rod section quantity is one, tray and nut set gradually at tail end anchor rod section rear portion, middle anchor rod section quantity is many, the coaxial distribution of many middle anchor rod sections is between head end anchor rod section and tail end anchor rod section, all link to each other through an anchor rope section between the adjacent anchor rod section, all be connected through stock anchor rope switching energy-absorbing component between stock section and the anchor rope section, the supplementary switching sleeve of a stock all overlaps in each anchor rope section outside, carry on spacing fixedly by the supplementary switching sleeve of stock between the adjacent anchor rod section. The invention leads the uncoordinated deformation control effect of the block system rock mass to be more ideal by absorbing energy step by step.
Description
Technical Field
The invention belongs to the technical field of roadway surrounding rock support, and particularly relates to a sectional type energy-absorbing anchor rod cable adaptive to deformation of a block-tied rock mass.
Background
Anchor rod cable support becomes an important component of underground roadway support, and particularly, an anchor rod cable is used for reinforcing surrounding rocks and roadways in rock burst mines, impact dangerous areas and the like so as to adapt to displacement generated by large deformation of block rock masses. In the structural characteristics of the inhomogeneous and discontinuous block system rock mass, if external power disturbance exists, the rock mass can generate incongruous deformation, and a large acting force is generated on a supporting system.
For the traditional anchor bolt supporting technology, the control of the uncoordinated deformation of the block system rock mass is not ideal, and the capacity of resisting the shearing force generated by the uncoordinated deformation of the block system rock mass is limited. When the anchor rod and the anchor cable are adopted for combined support, the strength of the anchor rod and the shear resistance of the anchor cable can be fully utilized to resist the uncoordinated large deformation of the rock mass, but because the length and the elongation of the anchor rod and the anchor cable are different, when the uncoordinated large deformation of the rock mass occurs, the anchor rod or the anchor cable is easy to fail and damage in advance, so that the anchor rod or the anchor cable cannot fully exert the function.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the sectional type energy-absorbing anchor rod cable adaptive to the deformation of the block-system rock mass, which has more ideal control effect on the uncoordinated deformation of the block-system rock mass, can realize gradual energy absorption, prolong the service life of the structure and improve the bearing capacity of the structure in the process of fully utilizing the tensile property of the anchor rod and the shear-resistant functional property of the anchor cable to resist the uncoordinated large deformation of the rock mass.
In order to achieve the purpose, the invention adopts the following technical scheme: a sectional energy-absorbing anchor rod cable adapting to deformation of a block-tied rock body comprises an anchor head, an anchor rod section, an anchor cable section, an anchor rod and anchor cable switching energy-absorbing assembly, an anchor rod auxiliary switching sleeve, a tray and a nut; the anchor rod section number is a plurality of, and a plurality of anchor rod sections divide into three types, including head anchor rod section, middle anchor rod section and tail end anchor rod section, and head anchor rod section quantity is one, the anchor head is fixed to be set up in the front portion of head anchor rod section, and tail end anchor rod section quantity is one, tray and nut set up in the rear portion of tail end anchor rod section in proper order, and middle anchor rod section quantity is many, and many middle anchor rod sections coaxial distribution are between head end anchor rod section and tail end anchor rod section, all link to each other through an anchor rope section between the adjacent anchor rod section, all connect through anchor rope switching energy-absorbing component between anchor rod section and the anchor rope section, and each anchor rope section outside all overlaps and is equipped with an auxiliary switching sleeve of anchor rod, carries out spacing fixed by auxiliary switching sleeve of anchor rod between the adjacent anchor rod section.
The anchor rod and anchor cable switching energy absorption assembly comprises an energy absorption sleeve, an anchor cable adapter, an energy absorption swing rod and a negative stiffness energy absorption component; the energy-absorbing sleeve adopts a two-stage ladder structure and comprises a cylindrical section and a conical section, wherein an internal thread is arranged on the inner surface of the cylindrical section, the energy-absorbing sleeve is in threaded connection with the anchor rod section through the internal thread on the inner surface of the cylindrical section, and the large-diameter end of the conical section is connected with the cylindrical section; energy-absorbing teeth are arranged on the inner surface of the conical barrel section of the energy-absorbing sleeve, the energy-absorbing teeth have a plurality of energy-absorbing teeth, and the plurality of energy-absorbing teeth are uniformly distributed on the inner surface of the conical barrel section along the circumferential direction and the axial direction; the energy-absorbing sleeve is coaxially sleeved outside the anchor cable adapter, and the anchor cable section penetrates through a small-diameter end cylinder opening of a conical cylinder section of the energy-absorbing sleeve and is fixedly connected with the anchor cable adapter; a plurality of energy-absorbing swing rods are circumferentially distributed on the anchor cable adapter, and shearing teeth are arranged on the outer surfaces of the energy-absorbing swing rods and are in shearing energy-absorbing fit with the energy-absorbing teeth; the energy-absorbing device comprises a plurality of negative stiffness energy-absorbing members, a plurality of anchor cable adapter shells, an anchor cable adapter, an energy-absorbing swing rod and a plurality of anchor cable adapter shells, wherein the number of the negative stiffness energy-absorbing members is a plurality, the negative stiffness energy-absorbing members are uniformly distributed along the circumferential direction, the inner ends of the negative stiffness energy-absorbing members are fixedly connected with the anchor cable adapter shells, and the outer ends of the negative stiffness energy-absorbing members are fixedly connected with the inner surfaces of the energy-absorbing swing rods.
The invention has the beneficial effects that:
the sectional energy-absorbing anchor rod cable suitable for deformation of the block-system rock mass has a more ideal control effect on the uncoordinated deformation of the block-system rock mass, can realize gradual energy absorption in the process of fully utilizing the tensile property of the anchor rod and the shear-resistant functional property of the anchor cable to resist the uncoordinated large deformation of the rock mass, prolongs the service life of the structure and improves the bearing capacity of the structure.
Drawings
FIG. 1 is a schematic structural diagram of a sectional energy-absorbing anchor cable adapted to deformation of a block-tied rock mass according to the present invention;
FIG. 2 is an enlarged view of section I of FIG. 1;
in the figure, 1-anchor head, 2-anchor rod section, 3-anchor cable section, 4-anchor rod and anchor cable transfer energy-absorbing component, 5-anchor rod auxiliary transfer sleeve, 6-tray, 7-nut, 8-energy-absorbing sleeve, 9-anchor cable adapter, 10-energy-absorbing swing rod, 11-negative rigidity energy-absorbing component, 12-energy-absorbing tooth and 13-shearing tooth.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1 and 2, a sectional energy-absorbing anchor rod cable adapted to deformation of a block-tied rock mass comprises an anchor head 1, an anchor rod section 2, an anchor cable section 3, an anchor rod and anchor cable transfer energy-absorbing assembly 4, an anchor rod auxiliary transfer sleeve 5, a tray 6 and a nut 7; the anchor rod sections 2 are a plurality of, the anchor rod sections 2 are divided into three types, the anchor rod sections comprise a head end anchor rod section, a middle anchor rod section and a tail end anchor rod section, the number of the head end anchor rod sections is one, the anchor head 1 is fixedly arranged in the front of the head end anchor rod section, the number of the tail end anchor rod sections is one, the tray 6 and the nut 7 are sequentially arranged at the rear part of the tail end anchor rod section, the number of the middle anchor rod sections is multiple, the middle anchor rod sections are coaxially distributed between the head end anchor rod section and the tail end anchor rod section, the adjacent anchor rod sections 2 are connected through the anchor rod section 3, the anchor rod sections 2 and the anchor rod sections 3 are connected through the anchor rod energy-absorbing anchor rod and anchor rod switching assembly 4, the outer side of each anchor rod section 3 is sleeved with the anchor rod auxiliary switching sleeve 5, and the adjacent anchor rod sections 2 are limited and fixed through the anchor rod auxiliary switching sleeve 5.
The anchor rod and anchor cable switching energy absorption assembly 4 comprises an energy absorption sleeve 8, an anchor cable adapter 9, an energy absorption swing rod 10 and a negative stiffness energy absorption member 11; the energy-absorbing sleeve 8 is of a two-stage ladder structure and comprises a cylinder section and a cone section, internal threads are arranged on the inner surface of the cylinder section, the energy-absorbing sleeve 8 is in threaded connection with the anchor rod section 2 through the internal threads on the inner surface of the cylinder section, and the large-diameter end of the cone section is connected with the cylinder section; the inner surface of the conical barrel section of the energy-absorbing sleeve 8 is provided with a plurality of energy-absorbing teeth 12, and the energy-absorbing teeth 12 are uniformly distributed on the inner surface of the conical barrel section along the circumferential direction and the axial direction; the energy-absorbing sleeve 8 is coaxially sleeved outside the anchor cable adapter 9, and the anchor cable section 3 penetrates through a small-diameter end cylinder opening of a conical cylinder section of the energy-absorbing sleeve 8 and is fixedly connected with the anchor cable adapter 9; a plurality of energy-absorbing swing rods 10 are circumferentially distributed on the anchor cable adapter 9, shearing teeth 13 are arranged on the outer surfaces of the energy-absorbing swing rods 10, and the shearing teeth 13 are in shearing energy-absorbing fit with the energy-absorbing teeth 12; the number of the negative stiffness energy-absorbing members 11 is a plurality, the negative stiffness energy-absorbing members 11 are uniformly distributed along the circumferential direction, the inner ends of the negative stiffness energy-absorbing members 11 are fixedly connected with the shell of the anchor cable adapter 9, and the outer ends of the negative stiffness energy-absorbing members 11 are fixedly connected with the inner surface of the energy-absorbing swing rod 10.
The one-time use process of the present invention is described below with reference to the accompanying drawings:
after the sectional type energy-absorbing anchor rod cable adapting to the deformation of the block rock mass is installed in the anchoring hole, if the block system rock mass generates uncoordinated large deformation, the anchor rod auxiliary adapter sleeve 5 is firstly destroyed, so that the shearing force directly acts on the anchor cable section 3, and then the shearing force is converted into the pulling force to the anchor rod section 2 through the anchor cable section 3, under the action of tensile force, the anchor cable adapter 9 and the anchor rod section 2 can generate axial relative displacement, so that the energy-absorbing swing rod 10 and the energy-absorbing sleeve 8 can generate axial relative displacement, in the relative displacement process, the shear teeth 13 can preferentially crush and destroy the energy-absorbing teeth 12, so that the energy absorption in the first stage is realized, the negative-stiffness energy-absorbing member 11 between the energy-absorbing swing rod 10 and the anchor cable adapter 9 is gradually compressed along with the increase of the relative displacement, therefore, the energy absorption of the second stage is realized, and finally, the uncoordinated deformation control effect of the block system rock mass is more ideal through gradual energy absorption.
The embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications without departing from the scope of the present invention are intended to be included in the scope of the present invention.
Claims (2)
1. The utility model provides an adaptation piece is sectional type energy-absorbing stock cable of rock mass deformation which characterized in that: the energy-absorbing; the anchor rod section number is a plurality of, and a plurality of anchor rod sections divide into three types, including head anchor rod section, middle anchor rod section and tail end anchor rod section, and head anchor rod section quantity is one, the anchor head is fixed to be set up in the front portion of head anchor rod section, and tail end anchor rod section quantity is one, tray and nut set up in the rear portion of tail end anchor rod section in proper order, and middle anchor rod section quantity is many, and many middle anchor rod sections coaxial distribution are between head end anchor rod section and tail end anchor rod section, all link to each other through an anchor rope section between the adjacent anchor rod section, all connect through anchor rope switching energy-absorbing component between anchor rod section and the anchor rope section, and each anchor rope section outside all overlaps and is equipped with an auxiliary switching sleeve of anchor rod, carries out spacing fixed by auxiliary switching sleeve of anchor rod between the adjacent anchor rod section.
2. The segmented energy-absorbing anchor rod cable adapting to deformation of a block-tied rock body according to claim 1, characterized in that: the anchor rod and anchor cable switching energy absorption assembly comprises an energy absorption sleeve, an anchor cable adapter, an energy absorption swing rod and a negative stiffness energy absorption component; the energy-absorbing sleeve adopts a two-stage ladder structure and comprises a cylindrical section and a conical section, wherein an internal thread is arranged on the inner surface of the cylindrical section, the energy-absorbing sleeve is in threaded connection with the anchor rod section through the internal thread on the inner surface of the cylindrical section, and the large-diameter end of the conical section is connected with the cylindrical section; energy-absorbing teeth are arranged on the inner surface of the conical barrel section of the energy-absorbing sleeve, the energy-absorbing teeth have a plurality of energy-absorbing teeth, and the plurality of energy-absorbing teeth are uniformly distributed on the inner surface of the conical barrel section along the circumferential direction and the axial direction; the energy-absorbing sleeve is coaxially sleeved outside the anchor cable adapter, and the anchor cable section penetrates through a small-diameter end cylinder opening of a conical cylinder section of the energy-absorbing sleeve and is fixedly connected with the anchor cable adapter; a plurality of energy-absorbing swing rods are circumferentially distributed on the anchor cable adapter, and shearing teeth are arranged on the outer surfaces of the energy-absorbing swing rods and are in shearing energy-absorbing fit with the energy-absorbing teeth; the energy-absorbing device comprises a plurality of negative stiffness energy-absorbing members, a plurality of anchor cable adapter shells, an anchor cable adapter, an energy-absorbing swing rod and a plurality of anchor cable adapter shells, wherein the number of the negative stiffness energy-absorbing members is a plurality, the negative stiffness energy-absorbing members are uniformly distributed along the circumferential direction, the inner ends of the negative stiffness energy-absorbing members are fixedly connected with the anchor cable adapter shells, and the outer ends of the negative stiffness energy-absorbing members are fixedly connected with the inner surfaces of the energy-absorbing swing rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110551025.0A CN113217055B (en) | 2021-05-20 | 2021-05-20 | Segmented energy-absorbing anchor rod cable suitable for deformation of block rock mass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110551025.0A CN113217055B (en) | 2021-05-20 | 2021-05-20 | Segmented energy-absorbing anchor rod cable suitable for deformation of block rock mass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113217055A true CN113217055A (en) | 2021-08-06 |
| CN113217055B CN113217055B (en) | 2024-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110551025.0A Active CN113217055B (en) | 2021-05-20 | 2021-05-20 | Segmented energy-absorbing anchor rod cable suitable for deformation of block rock mass |
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| CN (1) | CN113217055B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644053A (en) * | 2009-09-04 | 2010-02-10 | 凌光荣 | Method for enhancing pulling-resistant and tensile-resistant capability of soft and weak soil layer anchor rod/anchor rope |
| CN202117695U (en) * | 2011-06-21 | 2012-01-18 | 西安科技大学 | Pressure releasing device comprising tray and assembly |
| CN103016035A (en) * | 2012-12-27 | 2013-04-03 | 辽宁工程技术大学 | Abdicating buffer energy-absorbing shock-proof anchor rod cable for coal mine |
| CN103573279A (en) * | 2013-11-14 | 2014-02-12 | 山东科技大学 | Mining telescopic energy adsorption anti-impact viscous damping anchor rod and supporting method thereof |
| CN104864033A (en) * | 2015-06-04 | 2015-08-26 | 北京理工大学 | Rigidity-adjustable semi-active control type torsional damper for vehicle |
| CN205135677U (en) * | 2015-09-29 | 2016-04-06 | 山东科技大学 | Three -section prestressing force stock that shears |
| CN209654064U (en) * | 2019-03-07 | 2019-11-19 | 湖南科技大学 | A kind of pressure-relieving achor bar for deep roadway with large deformation surrounding rock supporting |
| CN111365049A (en) * | 2020-04-21 | 2020-07-03 | 中煤天津设计工程有限责任公司 | Hydraulic pallet for mine constant resistance anchor rod (cable) |
-
2021
- 2021-05-20 CN CN202110551025.0A patent/CN113217055B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644053A (en) * | 2009-09-04 | 2010-02-10 | 凌光荣 | Method for enhancing pulling-resistant and tensile-resistant capability of soft and weak soil layer anchor rod/anchor rope |
| CN202117695U (en) * | 2011-06-21 | 2012-01-18 | 西安科技大学 | Pressure releasing device comprising tray and assembly |
| CN103016035A (en) * | 2012-12-27 | 2013-04-03 | 辽宁工程技术大学 | Abdicating buffer energy-absorbing shock-proof anchor rod cable for coal mine |
| CN103573279A (en) * | 2013-11-14 | 2014-02-12 | 山东科技大学 | Mining telescopic energy adsorption anti-impact viscous damping anchor rod and supporting method thereof |
| CN104864033A (en) * | 2015-06-04 | 2015-08-26 | 北京理工大学 | Rigidity-adjustable semi-active control type torsional damper for vehicle |
| CN205135677U (en) * | 2015-09-29 | 2016-04-06 | 山东科技大学 | Three -section prestressing force stock that shears |
| CN209654064U (en) * | 2019-03-07 | 2019-11-19 | 湖南科技大学 | A kind of pressure-relieving achor bar for deep roadway with large deformation surrounding rock supporting |
| CN111365049A (en) * | 2020-04-21 | 2020-07-03 | 中煤天津设计工程有限责任公司 | Hydraulic pallet for mine constant resistance anchor rod (cable) |
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| Publication number | Publication date |
|---|---|
| CN113217055B (en) | 2024-05-31 |
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