CN109026105A - The anchor rod component and its method for protecting support of coal mine roadway buffering surrouding rock deformation - Google Patents
The anchor rod component and its method for protecting support of coal mine roadway buffering surrouding rock deformation Download PDFInfo
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- CN109026105A CN109026105A CN201811121397.4A CN201811121397A CN109026105A CN 109026105 A CN109026105 A CN 109026105A CN 201811121397 A CN201811121397 A CN 201811121397A CN 109026105 A CN109026105 A CN 109026105A
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- Prior art keywords
- conical
- disk body
- buffering
- bolt
- outer sleeve
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The anchor rod component of coal mine roadway buffering surrouding rock deformation, including buffering anchor bar body structure and buffering support holder structure, buffering anchor bar body structure include an outer sleeve, conical a connector, upper bolt, lower bolt；Buffer pallet structure includes the first disk body, conical dsah-pot, the second disk body and pre-load nut, the first disk body, conical dsah-pot, the second disk body are sequentially passed through under on lower bolt lower end, pre-load nut, which is threaded in the lower end of lower bolt and presses with the second disk body bottom, to be cooperated.The invention also discloses the coal mine roadway method for protecting support of the anchor rod component of buffering surrouding rock deformation；The present invention has many advantages, such as to be not susceptible to that deformation unloading or fracture, adaptive deformation ability is strong, can continue buffering allows pressure, easy for installation, reduce the support cost in mine deep bump tunnel, the safety coefficient of mining production work is improved, guarantees the validity and safety of deep laneway surrounding rock anchor rod component support system.
Description
Technical field
The invention belongs to mine safeties to produce support technology field, and in particular to a kind of coal mine roadway buffering surrouding rock deformation
Anchor rod component and its method for protecting support.
Background technique
In recent years, gradually increasing with seam mining depth, geological conditions becomes increasingly complex, and roadway surrounding rock is also usually
The features such as showing high stress, large deformation, and existing conventional anchor pole shock resistance is limited, is difficult to pair under thump effect
Country rock plays support action, once the deformation of roadway surrounding rock can exceed that the range that anchor pole can bear, it will because of support apparatus
Failure and cause an accident, to cause to seriously threaten to mining safety, cause heavy losses to enterprise.In actual engineering
In, the common failure mode of anchor pole mainly there is failure by shear of the anchor pole at sliding surface or at joint plane, Rock And Soil to destroy with
And it is destroyed caused by the tensile bearing capacity deficiency of anchor pole.Anchor pole fail the main reason for be: anchor pole be pulled off destruction, reinforcing bar with
The destruction of the faying face bond damage of grouting body, the faying face bond damage of grouting body and Rock And Soil and the body that is in the milk.Conventional anchor
The elongation percentage of bar reinforcing bar itself is low, can not generate large deformation.When tunnel occurs rock burst or encounters impact load, conventional anchor
Bar because itself can not generate large deformation be unable to country rock compatible deformation, this often leads to, and anchor pole is pulled off or reinforcing bar is drawn
Out.In short, conventional anchor pole be because suitable for surrounding rock large deformation and can not can not absorb the energy of impact load and be easy failure, thus
Cause entire support system to fail, jeopardizes the safety in production of worker.In addition, the anchoring tray that mine uses at present, including plate
Shape pallet, cast iron pallet, second disk body etc., the technical issues of deformation unloading suddenly easily occurs under impact loading or is broken.
Summary of the invention
The present invention provides a kind of anchor of coal mine roadway buffering surrouding rock deformation to solve shortcoming in the prior art
Bar assembly and its method for protecting support, have be not susceptible to deformation unloading or fracture, adaptive deformation ability strong, strong shock resistance,
It can persistently allow the advantages that pressure, simple structure and convenient processing, performance safety are reliable, construction technique is simple, mine can be reduced
The support cost in bump in deep part tunnel improves the safety coefficient of mining production work, overcomes the deficiencies of existing technologies, and guarantees
The validity and safety of deep laneway surrounding rock Bolt System are improved to mine deep bump roadway surrounding rock anchor pole branch
The further investigation of protecting system theory is horizontal, it is ensured that mine timbering is safe and reliable.
In order to solve the above technical problems, the present invention adopts the following technical scheme: the anchor of coal mine roadway buffering surrouding rock deformation
Bar assembly, including buffering anchor bar body structure and buffering support holder structure, buffering anchor bar body structure include an outer sleeve, a circular cone
Shape connector, upper bolt, lower bolt, the excircle of outer sleeve are cylindrical structure, the inner hole of outer sleeve thick, lower end in upper port
The thin conical structure of mouth, the shape of conical connector is in the conical structure that upper end is thick, lower end is thin, the inner hole cone of outer sleeve
Degree is identical as conical connector excircle taper, and conical connector is extend into outer sleeve and the two is interference fitted, circular cone
The top and bottom of shape connector offer thread groove and lower thread groove, and the lower end of upper bolt is protruded into and is threaded in
In thread groove, the upper end of lower bolt is protruded into and is threaded in lower thread groove；
Buffer pallet structure includes the first disk body, conical dsah-pot, the second disk body and pre-load nut, the first disk body and the second disk
Body is arranged in parallel, and conical dsah-pot is in up-thin-low-thick circular cone barrel structure, conical dsah-pot upper end and the first disk body following table
Face is fixedly connected, and conical dsah-pot lower end is fixedly connected with the second disk body upper surface, and the first circular hole is offered on the first disk body,
Offer the second circular hole on second disk body, on lower bolt lower end under sequentially pass through the first circular hole, conical dsah-pot and the
Two circular holes, pre-load nut, which is threaded in the lower end of lower bolt and presses with the second disk body bottom, to be cooperated.
The middle part of second disk body is stamped and formed out downwards downwardly projecting buffering shell, the center line of buffering shell vertically with
The center line of conical dsah-pot is overlapped, and the second circular hole is provided with buffering shell bottom.
First disk body and the second disk body are 160mm by length and width, and thickness is made of the steel plate of 15mm, the first circular hole, circular cone
The diameter of shape dsah-pot upper port and the second circular hole is equal, diameter and the buffering shell upper port of conical dsah-pot lower port
Diameter is consistent.
The external peripheral surface of outer sleeve is provided with several positioning ribs, and the upper end of each positioning rib is fixedly connected with
The external peripheral surface of outer sleeve, the radial direction of the lower end edge outer sleeve of each positioning rib, which is flared out, to be obliquely installed, and is owned
Positioning rib is evenly distributed in the circumferential direction.
The upper end outer circle portion of outer sleeve is threaded with the top cover of conical connector upper end press contact, outer sleeve
The internal diameter of inner hole lower port, the internal diameter of top cover, the outer diameter of upper bolt and lower bolt outer diameter size it is consistent.
The method for protecting support of the coal mine roadway anchor rod component of buffering surrouding rock deformation, comprising the following steps:
(1) upper bolt, lower bolt, outer sleeve, conical connector, the first disk body and the second disk body are made；
(2) conical dsah-pot upper end and the first disk body lower surface are welded, table on conical dsah-pot lower end and the second disk body
Face welding thus makes the first disk body, conical dsah-pot and the second disk body be welded as a whole；
(3) conical connector is encased in outer sleeve, matches outer sleeve inner wall and the excircle interference of conical connector
It closes；
(4) lower end of upper bolt is protruded into and is threaded in upper thread groove, the upper end of lower bolt is protruded into and is threadedly coupled
In lower thread groove；
(5) upper top cover is covered by upper bolt upper end, top cover is threadedly coupled to outer sleeve upper end；
(6) upper bolt and lower bolt are driven into anchor hole using roof-bolter by drilling anchor solid hole at the roadway surrounding rock to need reinforcement
It is interior, Anchor Agent is injected, positioning rib is combined closely with Anchor Agent keeps outer sleeve fixed, finally in the case where exposing roadway surrounding rock
The first disk body, conical dsah-pot and the second disk body for the integral structure made in step (2) are installed in anchor pole lower end, twist
Upper pre-load nut makes pre-load nut compress buffering shell bottom, and the first disk body is contacted with roadway surrounding rock press, and anchoring operation is completed；
(7) tunnel occurs rock burst or in the case where encountering impact load during anchoring support, roadway surrounding rock can generate compared with
Large deformation, upper bolt and lower bolt by biggish pulling force, due to conical connector upper and lower side be separately connected upper bolt and
Lower bolt, therefore conical connector can slide under the action of the pulling force along the tapered bore of outer sleeve, cause housing
Cylinder axis fission shape is destroyed and absorbs the impact kinetic energy of country rock generation, meanwhile, conical dsah-pot is main energy absorbing component, circle
Taper dsah-pot makes conical dsah-pot axis split resigning destruction generation large deformation by its internal conical hollow structure to inhale
Receive and consume a large amount of impact energys, can adaptive deep high stress underground engineering wall rock large deformation condition, to weaken deep
The effective support of HI high impact tendency country rock is realized in injury caused by country rock bump.
The length of upper bolt and lower bolt is 1100m in step (1), equal in the upper and lower side of upper bolt lower end, lower bolt
Threading；
The round steel that conical connector uses a height to be 36mm for 98mm, disc diameter in step (1) is processed by draft
The conical structure mutually agreed with as one with the inner hole of outer sleeve, then in the upper surface of conical connector and lower end surface point
It Jia Gong not upper thread groove and lower thread groove；
The round steel that outer sleeve uses height to be 36mm for 100mm, disc diameter in step (1) passes through draft, forms one in inside
The inner hole of a conical structure, the inner hole upper port diameter of outer sleeve are 32mm, the thin circular cone of thick, outer sleeve inner hole lower port
The diameter of shape structure and the outer diameter of upper bolt are consistent；
Interception square the first disk body and the second disk body, drills out the first circular hole at the center of the first disk body in step (1),
One buffering shell of downward punching press at the center of the second disk body drills out the second circular hole in buffering shell upper bottom portion.
The specific method that pre-load nut is turned in step (6) is, shifts the first disk body onto the anchoring end of lower bolt and tight
Country rock is pasted, the tearing of conical dsah-pot is made to pre-tighten the small end face country rock of section, then by pre-load nut and the boom end that casts anchor
It is threadedly coupled, screws pre-load nut, pre-load nut compresses buffering shell, completes initial installation.Then preload installation is carried out, continues to revolve
Pre-load nut is twisted, pretightning force is applied to energy-absorbing anchoring tray component, the required pretightning force of lower bolt is reached according to actual requirement
When, stopping screws pre-load nut, completes the preload installation of energy-absorbing anchoring tray component, comes into operation.
By adopting the above technical scheme, the present invention is become using buffering anchor bar body structure and buffering support holder structure double buffering country rock
The structure of shape.With the strong advantage of decompression good buffer effect, dampening shock loads great efforts, security reliability.
The working principle of buffer pallet structure decompression buffering is as follows in the present invention: the object of the invention is to occur in tunnel
Rock burst or in the case where encountering impact load, splits resigning by conical dsah-pot axis, realizes that decompression buffering, the present invention have
Continual and steady decompression buffer capacity can effectively prevent the first disk body impact fracture and unexpected deformation failure, with High strength bolt
Cooperation can be realized the effective support of HI high impact tendency country rock, in the premise for not changing High strength bolt lever strength and structure
Under, it can be realized country rock large deformation, the decompression buffering for impacting large deformation, absorb and disappear using self structure advantage to the greatest extent
A large amount of impact energy is consumed, ensure that High strength bolt body and the first disk body are unlikely to damage easily when absorbing impact so that
Entire Bolt System is able to bear bigger impact force, and the deformation of adaptive country rock is to reach anchor rod system effective support
Purpose completes the maltilevel security supporting to country rock.
The working principle that the decompression buffering of anchor bar body structure is buffered in the present invention is as follows: by conical connector along outer
The tapered bore sliding of sleeve causes outer sleeve axis to split large deformation destruction, absorbs the impact energy that country rock generates, while can be with
So that country rock is generated moderate finite deformation, reduces harm caused by deep wall rock bump.Outer sleeve is matched with conical connector
Self structure advantage can be utilized to the greatest extent with the effective support for absorbing impact kinetic energy to realize HI high impact tendency country rock by closing
A large amount of impact energy is absorbed and consumed, ensure that upper bolt and lower bolt are unlikely to damage easily when absorbing impact, so that
Entire anchor rod device is able to bear bigger impact force, and the deformation of adaptive country rock is complete to achieve the purpose that anchor pole effective support
The maltilevel security supporting of pairs of country rock.
Outer sleeve member outer surface in the present invention is provided with a circle positioning rib, for increasing frictional resistance, prevents here
Outer sleeve member falls off from anchor hole, enhances anchoring effect.
Top cover in the present invention plays the conical connector axial movement of restriction, and is threadedly coupled and is integrated with outer sleeve,
Outer sleeve can be driven to generate axis when moving axially conical connector by top cover and split destruction.
The configuration of the present invention is simple is practical, novel and unique, has and is not susceptible to deformation unloading or fracture, adaptive deformation ability
By force, can continue buffering allow pressure, it is easy for installation the advantages that, reduce the support cost in mine deep bump tunnel, raising
The safety coefficient of mining production work, overcomes the defect of the prior art, guarantees deep laneway surrounding rock anchor rod component supporting system
The validity and safety of system improve the further investigation water to mine deep bump roadway surrounding rock Bolt System theory
It is flat, it is ensured that mine timbering is safe and reliable.
Detailed description of the invention
The three-dimensional structure diagram that Fig. 1 is connected between lower bolt of the present invention and buffer pallet structure；
Fig. 2 is the axial directional cross sectional view of buffer pallet structure；
Fig. 3 is the shape three-dimensional structure diagram for buffering anchor bar body structure；
Fig. 4 is the axial section for buffering anchor bar body structure partial；
Fig. 5 is the three-dimensional structure diagram of outer sleeve of the invention.
Specific embodiment
As Figure 1-Figure 5, the anchor rod component of coal mine roadway of the invention buffering surrouding rock deformation, including buffering anchor bar body
Structure and buffering support holder structure, buffering anchor bar body structure include outer sleeve 1, one conical connector 2, upper bolt 3, under
Anchor pole 4, the excircle of outer sleeve 1 are cylindrical structure, the cone knot that the inner hole of outer sleeve 1 is thick in upper port, lower port is thin
Structure, the shape of conical connector 2 is in the conical structure that upper end is thick, lower end is thin, and the hole taper and cone of outer sleeve 1 are even
2 excircle taper of fitting is identical, and conical connector 2 is extend into outer sleeve 1 and the two is interference fitted, conical connector 2
Top and bottom offer thread groove and lower thread groove, the lower end of upper bolt 3 is protruded into and is threaded in thread groove
Interior, the upper end of lower bolt 4 is protruded into and is threaded in lower thread groove；
Buffer pallet structure includes the first disk body 5, conical dsah-pot 6, the second disk body 7 and pre-load nut 8, the first disk body 5 with
Second disk body 7 is arranged in parallel, and conical dsah-pot 6 is in up-thin-low-thick circular cone barrel structure, conical 6 upper end of dsah-pot and first
5 lower surface of disk body is fixedly connected, and conical 6 lower end of dsah-pot is fixedly connected with 7 upper surface of the second disk body, is opened on the first disk body 5
Equipped with the first circular hole, offer the second circular hole on the second disk body 7, on 4 lower end of lower bolt and under sequentially pass through the first circular hole, circle
Taper dsah-pot 6 and the second circular hole, pre-load nut 8 are threaded in the lower end of lower bolt 4 and press with 7 bottom of the second disk body
Cooperation.
The middle part of second disk body 7 is stamped and formed out downwards downwardly projecting buffering shell 9, and buffering shell 9 can also play certain delay
Antihypertensive effect is rushed, the center line of buffering shell 9 vertically is overlapped with the center line of conical dsah-pot 6, and the second circular hole opens up
In buffering 9 bottom of shell.
First disk body 5 and the second disk body 7 are 160mm by length and width, and thickness is made of the steel plate of 15mm, the first circular hole, circle
The diameter of 6 upper port of taper dsah-pot and the second circular hole is equal, on the diameter and buffering shell 9 of 6 lower port of conical dsah-pot
The diameter of port is consistent.
The external peripheral surface of outer sleeve 1 is provided with several positioning ribs 10, and the upper end of each positioning rib 10 is fixed
It is connected to the external peripheral surface of outer sleeve 1, the radial direction of the lower end edge outer sleeve 1 of each positioning rib 10 is flared out inclination
Setting, all positioning ribs 10 are evenly distributed in the circumferential direction.
The upper end outer circle portion of outer sleeve 1 is threaded with the top cover 11 of conical 2 upper end of connector press contact, housing
The internal diameter of inner hole lower port of cylinder 1, the internal diameter of top cover 11, the outer diameter of upper bolt 3 and lower bolt 4 outer diameter size it is consistent.
The method for protecting support of the coal mine roadway anchor rod component of buffering surrouding rock deformation, comprising the following steps:
(1) upper bolt 3, lower bolt 4, outer sleeve 1, conical connector 2, the first disk body 5 and the second disk body 7 are made；
(2) conical 6 upper end of dsah-pot and 5 lower surface of the first disk body are welded, conical 6 lower end of dsah-pot and the second disk body 7
Upper surface welding thus makes the first disk body 5, conical dsah-pot 6 and the second disk body 7 be welded as a whole；
(3) conical connector 2 is encased in outer sleeve 1, makes the excircle mistake of 1 inner wall of outer sleeve and conical connector 2
It is full of cooperation；
(4) lower end of upper bolt 3 is protruded into and is threaded in upper thread groove, the upper end of lower bolt 4 is protruded into and screw thread connects
It connects in lower thread groove；
(5) upper top cover 11 is covered by 3 upper end of upper bolt, top cover 11 is threadedly coupled to 1 upper end of outer sleeve；
(6) upper bolt 3 and lower bolt 4 are driven into anchoring using roof-bolter by drilling anchor solid hole at the roadway surrounding rock to need reinforcement
In hole, Anchor Agent is injected, positioning rib 10 is combined closely with Anchor Agent keeps outer sleeve 1 fixed, finally encloses in exposing tunnel
Install the first disk body 5 of the integral structure made in step (2), conical dsah-pot 6 and the in 4 lower end of lower bolt of rock
Two disk bodies 7, screw on pre-load nut 8, and pre-load nut 8 is made to compress buffering 9 bottom of shell, and the first disk body 5 is contacted with roadway surrounding rock press,
Operation is anchored to complete；
(7) tunnel occurs rock burst or in the case where encountering impact load during anchoring support, roadway surrounding rock can generate compared with
Large deformation, upper bolt 3 and lower bolt 4 are by biggish pulling force, since conical 2 upper and lower side of connector has been separately connected upper anchor
Bar 3 and lower bolt 4, therefore conical connector 2 can slide under the action of the pulling force along the tapered bore of outer sleeve 1,
Cause 1 axis of outer sleeve fission shape to be destroyed and absorbs the impact kinetic energy of country rock generation, meanwhile, conical dsah-pot 6 is main inhales
Energy component, conical dsah-pot 6 make conical 6 axis of dsah-pot split resigning destruction generation by its internal conical hollow structure
Large deformation absorbs and consumes a large amount of impact energys, can adaptive deep high stress underground engineering wall rock large deformation condition, from
And weaken injury caused by deep wall rock bump, realize the effective support of HI high impact tendency country rock.
The length of upper bolt 3 and lower bolt 4 is 1100m in step (1), 3 lower end of upper bolt, lower bolt 4 up and down
Hold equal threading；
The round steel that conical connector 2 uses a height to be 36mm for 98mm, disc diameter in step (1) is processed by draft
The conical structure mutually agreed with as one with the inner hole of outer sleeve 1, then in the upper surface and lower end surface of conical connector 2
Upper thread groove and lower thread groove are processed respectively；
The round steel that outer sleeve 1 uses height to be 36mm for 100mm, disc diameter in step (1) passes through draft, forms one in inside
The inner hole of a conical structure, the inner hole upper port diameter of outer sleeve 1 are 32mm, the thin circle of thick, outer sleeve 1 inner hole lower port
The diameter of pyramidal structure is consistent with the outer diameter of upper bolt 3；
Interception square the first disk body 5 and the second disk body 7 in step (1) drills out the first circle at the center of the first disk body 5
Hole, one buffering shell 9 of downward punching press at the center of the second disk body 7 drill out the second circular hole in buffering 9 upper bottom portion of shell.
The specific method that pre-load nut 8 is turned in step (6) is to shift the first disk body 5 the anchoring end of lower bolt 4 onto simultaneously
It is close to country rock, so that the tearing of conical dsah-pot 6 is pre-tightened the small end face country rock of section, then by pre-load nut 8 and lower bolt 4
End thread connection screws pre-load nut 8, and pre-load nut 8 compresses buffering shell 9, completes initial installation.Then preload peace is carried out
Dress, continues to screw pre-load nut 8, applies pretightning force to energy-absorbing anchoring tray component and reaches 4 institute of lower bolt according to actual requirement
When the pretightning force of demand, stopping screws pre-load nut 8, completes the preload installation of energy-absorbing anchoring tray component, comes into operation.
The present embodiment not makes any form of restriction shape of the invention, material, structure etc., all according to this hair
Bright technical spirit any simple modification, equivalent change and modification to the above embodiments, belong to the technology of the present invention side
The protection scope of case.
Claims (8)
1. the coal mine roadway anchor rod component of buffering surrouding rock deformation, it is characterised in that: including buffering anchor bar body structure and buffering support
Dish structure, buffering anchor bar body structure include an outer sleeve, conical a connector, upper bolt, lower bolt, outer sleeve it is outer
Circumference is cylindrical structure, the inner hole of outer sleeve in the conical structure that upper port is thick, lower port is thin, conical connector it is outer
Shape is in the conical structure that upper end is thick, lower end is thin, and the hole taper of outer sleeve is identical as conical connector excircle taper, circle
Tapered connection is extend into outer sleeve and the two is interference fitted, and the top and bottom of conical connector offer screw thread
Slot and lower thread groove, the lower end of upper bolt are protruded into and are threaded in thread groove, and the upper end of lower bolt is protruded into and screw thread connects
It connects in lower thread groove；
Buffer pallet structure includes the first disk body, conical dsah-pot, the second disk body and pre-load nut, the first disk body and the second disk
Body is arranged in parallel, and conical dsah-pot is in up-thin-low-thick circular cone barrel structure, conical dsah-pot upper end and the first disk body following table
Face is fixedly connected, and conical dsah-pot lower end is fixedly connected with the second disk body upper surface, and the first circular hole is offered on the first disk body,
Offer the second circular hole on second disk body, on lower bolt lower end under sequentially pass through the first circular hole, conical dsah-pot and the
Two circular holes, pre-load nut, which is threaded in the lower end of lower bolt and presses with the second disk body bottom, to be cooperated.
2. the coal mine roadway according to claim 1 anchor rod component of buffering surrouding rock deformation, it is characterised in that: the second disk body
Middle part be stamped and formed out downwardly projecting buffering shell downwards, in the center line and conical dsah-pot of buffering shell vertically
Heart line is overlapped, and the second circular hole is provided with buffering shell bottom.
3. the coal mine roadway according to claim 2 anchor rod component of buffering surrouding rock deformation, it is characterised in that: the first disk body
By length and width be 160mm with the second disk body, thickness is made of the steel plate of 15mm, the first circular hole, conical dsah-pot upper port and
The diameter of second circular hole is equal, and the diameter of conical dsah-pot lower port is consistent with the buffering diameter of shell upper port.
4. the coal mine roadway according to claim 3 anchor rod component of buffering surrouding rock deformation, it is characterised in that: outer sleeve
External peripheral surface is provided with several positioning ribs, and the upper end of each positioning rib is fixedly connected with the outer circle weekly form in outer sleeve
Face, the radial direction of the lower end edge outer sleeve of each positioning rib, which is flared out, to be obliquely installed, and all positioning ribs are circumferentially square
To being evenly arranged.
5. the coal mine roadway according to claim 4 anchor rod component of buffering surrouding rock deformation, it is characterised in that: outer sleeve
Upper end outer circle portion be threaded with by conical connector upper end press contact top cover, the inner hole lower port of outer sleeve it is interior
Diameter, the internal diameter of top cover, the outer diameter of upper bolt and lower bolt outer diameter size it is consistent.
6. using the method for protecting support of the anchor rod component of buffering surrouding rock deformation of coal mine roadway described in claim 5, feature exists
In: the following steps are included:
(1) upper bolt, lower bolt, outer sleeve, conical connector, the first disk body and the second disk body are made；
(2) conical dsah-pot upper end and the first disk body lower surface are welded, table on conical dsah-pot lower end and the second disk body
Face welding thus makes the first disk body, conical dsah-pot and the second disk body be welded as a whole；
(3) conical connector is encased in outer sleeve, matches outer sleeve inner wall and the excircle interference of conical connector
It closes；
(4) lower end of upper bolt is protruded into and is threaded in upper thread groove, the upper end of lower bolt is protruded into and is threadedly coupled
In lower thread groove；
(5) upper top cover is covered by upper bolt upper end, top cover is threadedly coupled to outer sleeve upper end；
(6) upper bolt and lower bolt are driven into anchor hole using roof-bolter by drilling anchor solid hole at the roadway surrounding rock to need reinforcement
It is interior, Anchor Agent is injected, positioning rib is combined closely with Anchor Agent keeps outer sleeve fixed, finally in the case where exposing roadway surrounding rock
The first disk body, conical dsah-pot and the second disk body for the integral structure made in step (2) are installed in anchor pole lower end, twist
Upper pre-load nut makes pre-load nut compress buffering shell bottom, and the first disk body is contacted with roadway surrounding rock press, and anchoring operation is completed；
(7) tunnel occurs rock burst or in the case where encountering impact load during anchoring support, roadway surrounding rock can generate compared with
Large deformation, upper bolt and lower bolt by biggish pulling force, due to conical connector upper and lower side be separately connected upper bolt and
Lower bolt, therefore conical connector can slide under the action of the pulling force along the tapered bore of outer sleeve, cause housing
Cylinder axis fission shape is destroyed and absorbs the impact kinetic energy of country rock generation, meanwhile, conical dsah-pot is main energy absorbing component, circle
Taper dsah-pot makes conical dsah-pot axis split resigning destruction generation large deformation by its internal conical hollow structure to inhale
Receive and consume a large amount of impact energys, can adaptive deep high stress underground engineering wall rock large deformation condition, to weaken deep
The effective support of HI high impact tendency country rock is realized in injury caused by country rock bump.
7. the coal mine roadway according to claim 4 anchor rod component and its method for protecting support of buffering surrouding rock deformation, feature
Be: the length of upper bolt and lower bolt is 1100m in step (1), is processed in the upper and lower side of upper bolt lower end, lower bolt
External screw thread；
The round steel that conical connector uses a height to be 36mm for 98mm, disc diameter in step (1) is processed by draft
The conical structure mutually agreed with as one with the inner hole of outer sleeve, then in the upper surface of conical connector and lower end surface point
It Jia Gong not upper thread groove and lower thread groove；
The round steel that outer sleeve uses height to be 36mm for 100mm, disc diameter in step (1) passes through draft, forms one in inside
The inner hole of a conical structure, the inner hole upper port diameter of outer sleeve are 32mm, the thin circular cone of thick, outer sleeve inner hole lower port
The diameter of shape structure and the outer diameter of upper bolt are consistent；
Interception square the first disk body and the second disk body, drills out the first circular hole at the center of the first disk body in step (1),
One buffering shell of downward punching press at the center of the second disk body drills out the second circular hole in buffering shell upper bottom portion.
8. the coal mine roadway according to claim 4 anchor rod component and its method for protecting support of buffering surrouding rock deformation, feature
Be: the specific method that pre-load nut is turned in step (6) is to shift the first disk body the anchoring end of lower bolt onto and be close to enclose
Rock makes the tearing of conical dsah-pot pre-tighten the small end face country rock of section, then by pre-load nut and lower bolt end thread
Connection screws pre-load nut, and pre-load nut compresses buffering shell, completes initial installation；Then preload installation is carried out, continues to screw pre-
Tight nut applies pretightning force to energy-absorbing anchoring tray component, according to actual requirement, when reaching the required pretightning force of lower bolt,
Stopping screws pre-load nut, completes the preload installation of energy-absorbing anchoring tray component, comes into operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811121397.4A CN109026105A (en) | 2018-09-26 | 2018-09-26 | The anchor rod component and its method for protecting support of coal mine roadway buffering surrouding rock deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811121397.4A CN109026105A (en) | 2018-09-26 | 2018-09-26 | The anchor rod component and its method for protecting support of coal mine roadway buffering surrouding rock deformation |
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| Publication Number | Publication Date |
|---|---|
| CN109026105A true CN109026105A (en) | 2018-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811121397.4A Withdrawn CN109026105A (en) | 2018-09-26 | 2018-09-26 | The anchor rod component and its method for protecting support of coal mine roadway buffering surrouding rock deformation |
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| CN (1) | CN109026105A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794792A (en) * | 2020-07-20 | 2020-10-20 | 泰安泰烁岩层控制科技有限公司 | Novel controllable-deformation elastic energy-releasing impact-resistant anchor rod and using method thereof |
| CN112431623A (en) * | 2020-10-26 | 2021-03-02 | 河南理工大学 | Multistage energy-absorbing anchor rod and construction method thereof |
| CN113982663A (en) * | 2021-09-24 | 2022-01-28 | 中国矿业大学(北京) | Yielding anchor rod and supporting method |
| CN114486231A (en) * | 2022-04-07 | 2022-05-13 | 中国矿业大学(北京) | Method and system for evaluating long-term dynamics performance of underground engineering support system |
| CN115075241A (en) * | 2022-07-19 | 2022-09-20 | 辽宁工程技术大学 | Anchor rod with impact buffering device and method |
| CN116733516A (en) * | 2023-08-14 | 2023-09-12 | 中国矿业大学(北京) | Anchor and tray coupling nested surrounding rock compression-shear-preventing synergistic anchoring system and method |
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2018
- 2018-09-26 CN CN201811121397.4A patent/CN109026105A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794792A (en) * | 2020-07-20 | 2020-10-20 | 泰安泰烁岩层控制科技有限公司 | Novel controllable-deformation elastic energy-releasing impact-resistant anchor rod and using method thereof |
| CN112431623A (en) * | 2020-10-26 | 2021-03-02 | 河南理工大学 | Multistage energy-absorbing anchor rod and construction method thereof |
| CN112431623B (en) * | 2020-10-26 | 2022-10-04 | 河南理工大学 | Multistage energy-absorbing anchor rod and construction method thereof |
| CN113982663A (en) * | 2021-09-24 | 2022-01-28 | 中国矿业大学(北京) | Yielding anchor rod and supporting method |
| CN114486231A (en) * | 2022-04-07 | 2022-05-13 | 中国矿业大学(北京) | Method and system for evaluating long-term dynamics performance of underground engineering support system |
| CN114486231B (en) * | 2022-04-07 | 2022-08-09 | 中国矿业大学(北京) | Method and system for evaluating long-term dynamics performance of underground engineering support system |
| CN115075241A (en) * | 2022-07-19 | 2022-09-20 | 辽宁工程技术大学 | Anchor rod with impact buffering device and method |
| CN116733516A (en) * | 2023-08-14 | 2023-09-12 | 中国矿业大学(北京) | Anchor and tray coupling nested surrounding rock compression-shear-preventing synergistic anchoring system and method |
| CN116733516B (en) * | 2023-08-14 | 2023-11-17 | 中国矿业大学(北京) | Anchor and tray coupling nested surrounding rock compression-shear-preventing synergistic anchoring system and method |
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Application publication date: 20181218 |