CN114718619A - Solid anchoring piece capable of grouting - Google Patents
Solid anchoring piece capable of grouting Download PDFInfo
- Publication number
- CN114718619A CN114718619A CN202210409898.2A CN202210409898A CN114718619A CN 114718619 A CN114718619 A CN 114718619A CN 202210409898 A CN202210409898 A CN 202210409898A CN 114718619 A CN114718619 A CN 114718619A
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- China
- Prior art keywords
- grouting pipe
- grouting
- anchor
- tray
- sleeve
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- 238000004873 anchoring Methods 0.000 title claims abstract description 102
- 239000007787 solid Substances 0.000 title claims abstract description 30
- 238000007569 slipcasting Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 54
- 239000002002 slurry Substances 0.000 claims description 30
- 239000002775 capsule Substances 0.000 claims description 28
- 230000000903 blocking effect Effects 0.000 claims description 27
- 230000002093 peripheral effect Effects 0.000 claims description 26
- 239000011440 grout Substances 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 239000011435 rock Substances 0.000 abstract description 10
- 230000008093 supporting effect Effects 0.000 abstract description 5
- 239000003245 coal Substances 0.000 abstract description 2
- 238000005065 mining Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 208000027418 Wounds and injury Diseases 0.000 description 18
- 238000000034 method Methods 0.000 description 11
- 229920001971 elastomer Polymers 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000005060 rubber Substances 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002985 plastic film Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
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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
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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
- E21D21/008—Anchoring or tensioning means
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Abstract
The invention relates to a solid anchoring piece capable of grouting, and belongs to the field of coal mining. The solid anchoring part capable of grouting comprises an anchoring part, a tray and an anchoring device, wherein the anchoring part is of a solid structure, the tray and the anchoring device are sequentially sleeved at one end of the anchoring part, the anchoring device is used for pressing the tray tightly, the solid anchoring part further comprises a grouting pipe, one end of the grouting pipe penetrates through the tray and extends to one side far away from the tray, and an opening at the other end of the grouting pipe is a grouting port; the one end that the tray was kept away from to the anchor assembly is first end, and the slip casting pipe that is located between tray and the first end is around locating on the anchor assembly. The device completes grouting through the grouting pipe wound on the solid anchoring piece, so that the strength of the anchoring piece is not reduced, and the supporting effect on a broken rock body is achieved; on the other hand, the grouting pipe plays a role in reinforcing the concrete in the anchor hole, so that the bearing capacity and the anti-damage capacity of the concrete can be improved, and the anti-seismic effect exceeding that of common concrete is achieved.
Description
Technical Field
The invention relates to a solid anchoring piece capable of grouting, and belongs to the field of coal mining.
Background
The anchor rod is widely applied to engineering related to rock and soil bodies, such as mine well and drift engineering, side slope engineering, foundation pit engineering, urban underground space and underground engineering, geological disaster prevention and control and the like. For a rock body with developed, constructed and broken cracks, a grouting anchor rod is needed to be adopted to reinforce the rock body so as to improve the self bearing capacity of surrounding rocks, and the grouting anchor rod produced at present in China is mainly a hollow grouting anchor rod;
the rod body of the existing hollow grouting anchor rod is of a hollow structure, the strength of the anchor rod is low, the breaking force of the hollow grouting anchor rod processed by using a welded pipe is generally about 50kN, and the breaking force of the hollow grouting anchor rod processed by using a seamless pipe is generally not more than 200 kN.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a solid anchoring piece which has high anchoring piece strength and can be injected.
The technical scheme adopted by the invention for solving the technical problems is as follows: the solid anchoring part capable of grouting comprises an anchoring part, a tray and an anchoring device, wherein the anchoring part is of a solid structure, the tray and the anchoring device are sequentially sleeved at one end of the anchoring part, the anchoring device is used for pressing the tray tightly, the solid anchoring part further comprises a grouting pipe, one end of the grouting pipe penetrates through the tray and extends to one side far away from the tray, and an opening at the other end of the grouting pipe is a grouting port;
the one end that the tray was kept away from to the anchor assembly is first end, and the slip casting pipe that is located between tray and the first end is around locating on the anchor assembly.
Further, the anchoring piece is an anchor rod or an anchor cable, the anchoring device is an anchoring nut, and one end of the anchoring piece is provided with a thread;
when the anchoring part is an anchor cable, one end of the anchor cable is sleeved with the sleeve, the thread is arranged on the peripheral surface of the sleeve, the anchor cable penetrates through the sleeve and is fixedly connected with the sleeve, the tray and the anchoring device are sequentially sleeved on the sleeve, and the grouting pipe is wound on the sleeve and the anchor cable.
The device further comprises an expandable and contractible capsule sealing sleeve, a runner is arranged in the expandable and contractible capsule sealing sleeve, a grouting pipe passes through the runner of the capsule sealing sleeve, two ends of the capsule sealing sleeve along the axial direction of the capsule sealing sleeve are hermetically connected with the grouting pipe, and a slurry leakage opening is formed in the grouting pipe and communicated with the runner;
the bladder sealing sleeve is fixedly sleeved on the outer peripheral surface of the grouting pipe close to the tray, and the bladder sealing sleeve is positioned between the tray and the first end.
Furthermore, the grouting pipe between the tray and the first end is divided into an intensive section and a sparse section, the intensive section is located on one side close to the tray, the sparse section is located in the middle of the anchoring part and on one side close to the first end, the lead of the grouting pipe is reduced in the direction extending from the tray to the first end, and the capsule sealing sleeve is fixedly sleeved on the grouting pipe located in the intensive section.
Furthermore, the grouting pipe positioned at the dense section is in a tower spring shape, and the large-diameter end of the tower spring shape formed by the grouting pipe is positioned at one side close to the tray.
Furthermore, the slurry leakage opening is positioned in the flow channel.
The grouting pipe is characterized by further comprising a plugging sheet connected with the inner wall of the grouting pipe, the shape of the plugging sheet is matched with that of a channel in the grouting pipe, and the plugging sheet is positioned between the grout leakage port and the first end of the anchoring piece;
when the pressure in the grouting pipe is smaller than the opening pressure of the plugging sheet, the plugging sheet cuts off the grouting pipe, and when the pressure in the grouting pipe is larger than the opening pressure of the plugging sheet, the plugging sheet is opened to open the grouting pipe.
The device further comprises an elastic plugging piece which is fixedly arranged on the peripheral wall of the grouting pipe and is used for plugging the grouting opening, the elastic plugging piece is positioned in the flow channel in the capsule sealing sleeve, and the opening pressure of the plugging sheet is greater than that of the elastic plugging piece;
when the pressure in the grouting pipe is greater than the opening pressure of the elastic plugging piece, the elastic plugging piece expands, the channel in the grouting pipe is communicated with the flow channel in the capsule sealing sleeve, and when the pressure in the grouting pipe is less than the opening pressure of the elastic plugging piece, the elastic plugging piece contracts to be used for plugging a plugging grout hole.
Furthermore, the inner peripheral wall of the grouting pipe is fixedly provided with an annular lug along the circumferential direction, the grouting pipe also comprises an abutting part arranged in the grouting pipe, one end of the abutting part is connected with the inner peripheral wall of the grouting pipe, the other end of the abutting part extends towards the direction close to the annular lug, the annular lug and the abutting part are both arranged close to a grouting port of the grouting pipe, and the direction from the annular lug to the abutting part is the grouting direction;
the plugging device also comprises a plugging component movably arranged in the grouting pipe, the plugging component is positioned between the annular convex block and the abutting part, and a gap for slurry to pass through is formed between the outer peripheral wall of the plugging component and the inner peripheral wall of the grouting pipe;
when grouting, the plugging component is abutted against the abutting part, and when the slurry flows back, the plugging component plugs the through hole in the annular convex block.
Further, when the anchoring part is an anchor cable, the grouting pipe close to the tray is an iron pipe or a steel pipe, interference fit is adopted between the grouting pipe wound on the sleeve and the anchor hole, and the position of the grouting pipe wound on the sleeve corresponds to the position of the hole opening of the anchor hole.
Furthermore, the grouting pipe wound on the sleeve is in a tower spring shape, the small diameter end of the tower spring shape formed by the grouting pipe is wound on the sleeve, and the large diameter end of the tower spring shape formed by the grouting pipe is positioned on one side close to the tray.
Furthermore, the interference magnitude between the grouting pipe wound on the sleeve and the anchor hole is 1-5 mm.
Further, one end of the anchoring part 1 is provided with threads, the anti-collapse nut is in threaded connection with the anchoring part, the anchoring device is the anchoring nut, the anchoring device is located between the anti-collapse nut and the tray, a connecting hole is formed in the anti-collapse nut and used for being connected with an anti-collapse line.
The invention has the beneficial effects that:
the use method of the device is as follows: the method comprises the steps of arranging an anchor hole on a surface to be reinforced, winding a grouting pipe on the anchoring piece, inserting the anchoring piece wound with the grouting pipe into the anchor hole, enabling the bottom of the anchoring piece to be in contact with the bottom of the anchor hole, sequentially sleeving a grout stop plug, a tray and an anchoring device on the anchoring piece, enabling one end, far away from the anchor hole, of the grouting pipe to penetrate through a first through hole in the tray, enabling an opening of the grouting pipe penetrating through the first through hole to be a grouting opening, locking the anchoring device, then grouting from the grouting opening, and completing grouting through the grouting pipe wound on the solid anchoring piece, so that the strength of the anchoring piece cannot be reduced, and the supporting effect on a broken rock body is achieved; on the other hand, the grouting pipe plays a role in reinforcing the concrete in the anchor hole, so that the bearing capacity and the anti-damage capacity of the concrete can be improved, and the anti-seismic effect exceeding that of common concrete is achieved.
Drawings
FIG. 1 is a schematic view of the anchor of the present invention in the form of a rock bolt;
FIG. 2 is a schematic structural view of the anchor of the present invention as an anchor cable;
FIG. 3 is a cross-sectional view taken along line B-B of the anchor of the present invention when the anchor is a rock bolt;
FIG. 4 is a cross-sectional view taken along line B-B of the anchor of the present invention as an anchor cable;
FIG. 5 is an enlarged schematic view of the invention at A;
FIG. 6 is a schematic view of a bladder closure in accordance with the present invention shown without grouting;
FIG. 7 is a view showing the construction of the sealing cap of the bladder after grouting in accordance with the present invention;
fig. 8 is a structural view of the anti-collapse nut of the present invention;
FIG. 9 is a schematic structural diagram of a plugging sheet arranged in a grouting pipe;
fig. 10 is a schematic view of a structure in which a blocking member is disposed in a grouting pipe.
Labeled as: the device comprises an anchoring part 1, a sleeve 2, a tray 3, a self-aligning ball pad 4, a thrust bearing 5, an anchoring device 6, an anti-collapse nut 7, a connecting hole 72, an anti-collapse wire 8, a grouting pipe 9, a slurry leakage port 92, a flow passage 94, a first annular bulge 96, a second annular bulge 98, a third annular bulge 99, an anchor hole 10, a pipe bag hole sealing sleeve 12, a sealing sheet 13, an elastic sealing piece 14, an abutting part 15, a sealing part 16, an annular bulge 17 and a guide surface 172.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.
Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention as claimed, but is merely representative of some embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, the solid anchoring member capable of grouting of the present invention comprises an anchoring member 1, a tray 3 and an anchoring device 6, wherein the anchoring member 1 is of a solid structure, the tray 3 and the anchoring device 6 are sequentially sleeved at one end of the anchoring member 1, the anchoring device 6 is used for compressing the tray 3, the solid anchoring member further comprises a grouting pipe 9, one end of the grouting pipe 9 penetrates through the tray 3 and extends to one side far away from the tray 3, and an opening at the other end of the grouting pipe 9 is a grouting port;
the one end that anchor assembly 1 kept away from tray 3 is first end, and the slip casting pipe 9 that is located between tray 3 and the first end is around locating anchor assembly 1.
Specifically, the anchoring part 1 of the device adopts a solid structure, the structure is simple, the cost is low, and the strength of the anchoring part 1 is high; the grouting pipe 9 extends to one end of the anchoring part 1 far away from the tray 3, and a first through hole for penetrating through the grouting pipe 9 is formed in the tray 3.
The using method of the device comprises the following steps: the method comprises the steps of arranging an anchor hole 10 on a surface to be reinforced, winding a grouting pipe 9 on an anchoring piece 1, inserting the anchoring piece 1 wound with the grouting pipe 9 into the anchor hole 10, enabling the bottom of the anchoring piece 1 to be in contact with the bottom of the anchor hole 10, sequentially sleeving a grout stop plug, a tray 3 and an anchoring device 6 on the anchoring piece 1, penetrating one end, far away from the anchor hole 10, of the grouting pipe 9 out of a first through hole, enabling an opening, penetrating out of the grouting pipe 9 of the first through hole, of the grouting pipe 9 to be a grouting port, locking the anchoring device 6, then grouting from the grouting port, and completing grouting through the grouting pipe 9 wound on the solid anchoring piece 1, so that the strength of the anchoring piece 1 cannot be reduced, and the supporting effect on a broken rock body is achieved; on the other hand, the grouting pipe 9 has a reinforcement effect on the concrete in the anchor hole 10, so that the bearing capacity and the anti-damage capacity of the concrete can be improved, and the anti-seismic effect exceeding that of common concrete is achieved.
Besides the grout stop plug, the anchor hole 10 may be sealed by a conventional grout stop structure such as a packing ring.
Preferably, the anchoring part 1 is an anchor rod or an anchor cable, the anchoring device 6 is an anchoring nut, and one end of the anchoring part 1 is provided with a thread;
when the anchoring part 1 is an anchor cable, one end of the anchor cable is sleeved with the sleeve 2, threads are arranged on the peripheral surface of the sleeve 2, the anchor cable penetrates through the sleeve 2 and is fixedly connected with the sleeve 2, the tray 3 and the anchoring device 6 are sequentially sleeved on the sleeve 2, and the grouting pipe 9 is wound on the sleeve 2 and the anchor cable. Specifically, the sleeve 2 can be fixed at the tail part of the anchor cable through an extrusion anchor process, and the external thread of the sleeve 2 is processed through a thread rolling process;
in addition, this application still can adapt to traditional anchor rope, and anchoring device 6 is the anchor rope tool to lock this moment, and slip casting pipe 9 wears out from tray 3 through punching or the nick mode such as add punching, and the afterbody of wearing out back slip casting pipe 9 has certain angle to avoid touchhing other parts of anchor rope, convenient construction.
As shown in fig. 5 to 7, preferably, the slurry stopping structure may also be: the inflatable and contractible capsule sealing sleeve 12 is internally provided with a flow channel 94, the grouting pipe 9 passes through the flow channel 94 of the capsule sealing sleeve 12, two ends of the capsule sealing sleeve 12 in the axial direction are both connected with the grouting pipe 9 in a sealing way, the grouting pipe 9 is provided with a slurry leakage port 92, and the slurry leakage port 92 is communicated with the flow channel 94;
the capsule-sealing sleeve 12 is fixedly fitted over the outer peripheral surface of the grouting pipe 9 close to the tray 3, and the capsule-sealing sleeve 12 is located between the tray 3 and the first end.
In particular, in use, the capsule sealing sleeve 12 is placed in the anchor hole 10 with the capsule sealing sleeve 12 in the orifice position of the anchor hole 10; both ends of the capsule sealing sleeve 12 may be sealed by fastening clasps and fixedly connected to the grouting pipe 9, and the capsule sealing sleeve 12 may be made of rubber; when grouting is not performed, the bladder-sealing sleeve 12 is in close contact with the grouting pipe 9, and during grouting, slurry flows into the flow channel 94 of the bladder-sealing sleeve 12 from the slurry leakage port 92 to expand the bladder-sealing sleeve 12, so that the expanded bladder-sealing sleeve 12 can seal the anchor hole 10, thereby reducing the risk of slurry leakage; the slurry leakage port 92 is positioned in the flow passage 94; the capsule sealing sleeve 12 can also be fixed at both ends to the grouting pipe 9 by means of steel wires.
Preferably, the grouting pipe 9 located between the tray 3 and the first end is divided into a dense section and a sparse section, the dense section is located at one side close to the tray 3, the sparse section is located at the middle of the anchor 1 and one side close to the first end, the lead of the grouting pipe 9 decreases from the tray 3 to the first end, and the capsule sealing sleeve 12 is fixedly sleeved on the grouting pipe 9 located at the dense section. Specifically, on the same distance along the axial direction of the anchoring part 1, the number of turns of the grouting pipe 9 wound in the dense section is greater than that of the grouting pipe 9 wound in the sparse section; when in use, the dense section is positioned at the orifice of the anchor hole 10, and the grouting pipes 9 at the orifice of the anchor hole 10 are wound more densely to improve the sealing effect of the capsule sealing sleeve 12; on the other hand, due to the expansion of the pipe encapsulation hole sleeve 12, the extrusion effect of the anchor hole 10 on the anchor hole is improved, and the effect of effectively improving the grouting effect from the self-sealing hole is realized.
Preferably, the grouting pipes 9 located at the dense section are in a tower spring shape, and the large diameter ends of the tower spring shape formed by the grouting pipes 9 are located at one side close to the tray 3. Specifically, the grouting pipe 9 on which the bladder sealing sleeve 12 is fitted is tower-spring shaped, which can generate a large pressure after the bladder sealing sleeve 12 is expanded, thus preventing cement mortar from flowing back, and further improving the sealing effect of the bladder sealing sleeve 12. The grouting pipe 9 of the scheme can select a rubber pipe and also can select a steel pipe, and when the rubber pipe is selected, the rubber pipe can be shaped into a tower spring shape in an adhesive mode.
Preferably, as shown in fig. 9, the grouting device further comprises a blocking sheet 13 connected with the inner wall of the grouting pipe 9, the shape of the blocking sheet 13 is matched with the shape of the channel in the grouting pipe 9, and the blocking sheet 13 is located between the slurry leakage port 92 and the first end of the anchoring member 1;
when the pressure in the grouting pipe 9 is smaller than the opening pressure of the blocking sheet 13, the blocking sheet 13 blocks the grouting pipe 9, and when the pressure in the grouting pipe 9 is larger than the opening pressure of the blocking sheet 13, the blocking sheet 13 opens to open the grouting pipe 9.
Specifically, the plugging sheet 13 can be a plastic sheet or a metal sheet; the inner peripheral wall of the grouting pipe 9 is also provided with a first annular bulge 96 and a second annular bulge 98 at intervals along the circumferential direction, the interval between the first annular bulge 96 and the second annular bulge 98 is matched with the thickness of the blocking sheet 13, and the blocking sheet 13 is arranged between the first annular bulge 96 and the second annular bulge 98; when the plugging sheet 13 is a plastic sheet, the pressure in the grouting pipe 9 is greater than the opening pressure of the plugging sheet 13, and the plugging sheet 13 is opened in an understanding manner that: the plastic sheet breaks under the pressure created by the grouting liquid, thus opening the grouting pipe 9; when the plugging thin sheet 13 is a metal thin sheet, the metal thin sheet can be fixed on the inner wall of the grouting pipe 9 by means of spot welding, and the number of welding points is optimally 2, and the understanding manner that the pressure in the grouting pipe 9 is greater than the opening pressure of the plugging thin sheet 13 to open the plugging thin sheet 13 is as follows: the foil is deformed so that the grouting pipe 9 is opened.
The plugging sheet 13 of the scheme provides back pressure to ensure that the bladder sealing sleeve 12 expands to plug the anchor hole 10.
Preferably, as shown in fig. 6 to 7, further comprises an elastic plugging member 14 fixedly disposed on the outer peripheral wall of the grouting pipe 9 and used for plugging the plugging port 92, the elastic plugging member 14 is located in the flow channel 94 in the capsule sealing sleeve 12, and the opening pressure of the plugging sheet 13 is greater than that of the elastic plugging member 14;
when the pressure in the grout pipe 9 is greater than the opening pressure of the elastic plugging member 14, the elastic plugging member 14 expands, the passageway in the grout pipe 9 communicates with the flow passage 94 in the capsule housing 12, and when the pressure in the grout pipe 9 is less than the opening pressure of the elastic plugging member 14, the elastic plugging member 14 contracts for plugging the grout port 92.
In particular, the elastic closure 14 is a rubber closure, such as: a rubber sleeve or sheet, of course the elastic plugging member 14 may also be a plugging sheet or a plugging sleeve made of synthetic rubber; the elastic plugging piece 14 is fixedly connected with the grouting pipe 9 along two ends on the axial line of the grouting pipe 9, when the pressure in the grouting pipe 9 is greater than the opening pressure of the elastic plugging piece 14, the elastic plugging piece 14 expands and deforms outwards, so that a gap for slurry to flow out is formed between the elastic plugging piece 14 and the outer peripheral wall of the grouting pipe 9, the slurry enters the capsule sealing sleeve 12 from the gap, when the capsule sealing sleeve 12 is filled with the slurry, the pressure in the grouting pipe 9 is greater than the opening pressure of the plugging sheet 13 due to the continuous grouting from the outside, the grouting pipe 9 is communicated with the anchor hole to release the pressure, and at the moment, the elastic plugging piece 14 retracts due to the elasticity of the elastic plugging piece 14 to leak the slurry outlet 92, so that the slurry in the capsule sealing sleeve 12 is prevented from flowing backwards to enter the grouting pipe 9, and the plugging effect is reduced.
Preferably, the inner peripheral wall of the grouting pipe 9 is further fixedly provided with an annular convex block 17 along the circumferential direction thereof, the grouting pipe further comprises an abutting part 15 arranged in the grouting pipe 9, one end of the abutting part 15 is connected with the inner peripheral wall of the grouting pipe 9, the other end of the abutting part 15 extends towards the direction close to the annular convex block 17, the annular convex block 17 and the abutting part 15 are both arranged close to a grouting port of the grouting pipe 9, the direction from the annular convex block 17 to the abutting part 15 is the grouting direction, and a grouting channel is arranged between the abutting part 15 and the inner peripheral wall of the grouting pipe 9;
the grouting device also comprises a plugging component 16 movably arranged in the grouting pipe 9, wherein the plugging component 16 is positioned between the annular convex block 17 and the abutting part 15, and a gap for slurry to pass through and communicated with the grouting channel is arranged between the outer peripheral wall of the plugging component 16 and the inner peripheral wall of the grouting pipe 9;
the plugging member 16 abuts against the abutting portion 15 at the time of grouting, and when the grout flows back, the plugging member 16 plugs the through hole in the annular projection 17.
Specifically, the abutting portion 15 is a spring, a grouting channel is formed in a space in the spring, the blocking member 16 is preferably a blocking ball, a third annular protrusion 99 is further arranged on the inner circumferential wall of the grouting pipe 9 along the circumferential direction of the inner circumferential wall, one end of the spring can be in contact with the third annular protrusion 99, and besides, the spring can be directly connected with the inner circumferential wall of the grouting pipe 9 in a welding manner; during grouting, the plugging component 16 cannot fall out of the grouting pipe 9 due to the action of the abutting part 15; when the slurry flows back, the plugging member 16 prevents the slurry from leaking from the slurry inlet.
The abutting part 15 can also be a folding elastic sheet, the abutting part 15 can also be a supporting rod, and a gap between the supporting rod and the inner wall of the grouting pipe 9 is a grouting channel; the shape of the plugging member 16 is not limited to a spherical shape, and may be a cubic shape.
Preferably, the top surface of the annular projection 17 is a guide surface 172, and the guide surface 172 is used for guiding the blocking member 16 to the through hole of the annular projection 17. Specifically, the guide surface is an inner conical surface.
Preferably, the slurry leakage port 92 is located in the flow passage 94. Specifically, the slurry leakage port 92 can be located outside the flow passage 94, and the slurry leakage port 92 is communicated with the flow passage 94 by a pipeline.
Preferably, when the anchoring member 1 is an anchor cable, the grouting pipe 9 near the tray 3 is an iron pipe or a steel pipe, the grouting pipe 9 wound on the sleeve 2 is in interference fit with the anchor hole 10, and the position of the grouting pipe 9 wound on the sleeve 2 corresponds to the position of the orifice of the anchor hole 10.
Specifically, when the anchor member 1 is an anchor cable, the outer diameter of the sleeve 2 is d1The outer diameter of the grouting pipe 9 is d2，d1+2d2＝d3The inner diameter of the anchor hole 10 is d, and d is slightly smaller than d3When the anchor device is used, when the anchor device 6 rotates towards the locking direction, the grouting pipe 9 wound on the sleeve 2 is extruded into the anchor hole 10, at the moment, the grouting pipe 9 and the anchor hole 10 are in interference fit, and the grouting pipe 9 is wound on the sleeve 2, so that the sleeve 2 and the grouting pipe 9 are in tight fit, and the sleeve 2 is prevented from being driven to rotate in the process that the anchor device 6 rotates towards the locking direction; the anchor cable is formed by winding a plurality of stranded wiresThe anchor cable is difficult to resist deformation caused by torsion; therefore if this scheme is not set up, at the in-process that promotes the pretightning force, promptly: when 6 to locking direction rotations of anchor, sleeve 2 can drive the anchor rope and twist reverse, and the anchor rope can take place to twist reverse deformation, promptly: the anchor rope is circular-arc, the anchor rope shortens, so will make the unable butt of tip at anchor eye 10's bottom when promoting the pretightning force, if stop to promote the pretightning force, the anchor rope rebounds, promptly: is linear, so that the effect of applying pretightening force is poor.
On the other hand, adopt interference fit still can further sealed anchor eye between slip casting pipe 9 and the anchor eye 10 of establishing on sleeve 2, reduce the risk that anchor eye 10 leaks the thick liquid.
In addition, this solution can be used in combination with the capsule sealing sleeve 12, where the capsule sealing sleeve 12 is not disposed on the sleeve, and the capsule sealing sleeve 12 is fixedly sleeved on the outer circumferential surface of the grouting pipe 9 that is close to the tray 3 and is wound on the anchor rope; further, the grouting pipe 9 on the anchor cable close to the tray 3 is in a tower spring shape.
Preferably, the grouting pipe 9 wound around the sleeve 2 is in a tower spring shape, a small diameter end of the tower spring shape formed by the grouting pipe 9 is wound on the sleeve 2, and a large diameter end of the tower spring shape formed by the grouting pipe 9 is positioned at one side close to the tray 3.
Specifically, the grouting pipe 9 on the sleeve 2 is in a tower spring shape, so that the connecting part of the sleeve 2 and the anchor cable can be protected from being cut off due to overlarge stress.
The scheme enables the grouting pipe 9 to form a tower spring shape, so that the interference magnitude between the grouting pipe 9 and the anchor hole 10 is gradually increased in the process that the grouting pipe 9 is extruded into the anchor hole 10, and the anchor cable can be effectively prevented from twisting; the interference magnitude between the grouting pipe 9 and the anchor hole 10 is gradually increased, so that the grouting pipe 9 can be conveniently pressed into the anchor hole 10 by the tray 3; if the grouting pipe 9 wound on the sleeve 2 is in the shape of a spiral spring, the interference between the grouting pipe 9 and the anchor hole 10 cannot be gradually increased, and only the interference between the grouting pipe 9 and the anchor hole 10 is fixed, if the interference is small, the grouting pipe 9 can prevent the anchor cable from twisting in the anchor hole 10 to a certain extent, but the anchor cable still has the possibility of twisting in the anchor hole 10, that is: the anti-twisting effect is not optimal; if the interference magnitude is large, the grouting pipe 9 is not easy to enter the anchor hole 10, so that the construction difficulty is increased.
Preferably, the interference magnitude between the grouting pipe 9 and the anchor hole 10 is 1 mm-5 mm. Specifically, when the interference magnitude of the grouting pipe 9 is less than 1mm, the anti-twisting effect is poor; when the interference magnitude of the grouting pipe 9 is larger than 5mm, the grouting pipe 9 is not easy to enter the anchor hole 10, so that the construction difficulty is increased; in addition, when the interference of the grouting pipe 9 is greater than 5mm, the interference between the grouting pipe 9 and the anchor hole 10 is too large, which may cause the deformation of the grouting pipe 9 to be large, reduce the flow rate of grouting material passing through the grouting pipe 9, and even may cause the grouting pipe 9 to be blocked, so that the grouting operation cannot be completed.
As shown in fig. 8, preferably, one end of the anchor member 1 is provided with a thread, and further includes an anti-collapse nut 7 in threaded connection with the anchor member 1, the anchor device 6 is an anchor nut, the anchor device 6 is located between the anti-collapse nut 7 and the tray 3, a connection hole 72 is formed in the anti-collapse nut 7, and the connection hole 72 is used for connecting the anti-collapse wire 8.
Specifically, the anti-collapse nut 7 of the device is provided with a connecting hole 72, one end of the anti-collapse wire 8 is fixedly connected to the connecting hole 72, and the other end of the anti-collapse wire 8 can be fixedly connected with the top plate metal net when in use. Prevent collapsing and set up certain safe buffer distance between nut 7 and the anchor 6, prevent collapsing nut 7 and be used for preventing anchor 6 from collapsing, promptly: the anchor device 6 is prevented from popping up from the anchor piece 1, so that the risk that the anchor device 6 falls down to hurt operators can be reduced, the anti-collapse wire 8 of the device is directly and fixedly connected to the connecting hole 72 of the anti-collapse nut 7, and the anti-collapse wire 8 cannot fail in the process that the anchor device 6 retreats, so that when the anchor piece 1 is broken, the anti-collapse wire 8 can bind the broken anchor piece 1, and the risk that the operators are hurt is reduced;
in addition, the invention patent with the publication number of CN111156042B discloses an anti-collapse mechanism for a rock burst roadway anchor rod; the anti-collapse mechanism has the following problems that as the suspension component and the speed reduction component are hung on the rod body of the anchor rod through the clamping ring, when the anchor rod is broken between the first torque nut and the second torque nut, the broken anchor rod can be separated from the constraint of the clamping ring, the broken anchor rod can still collapse, and the risk of injury of operating personnel exists; the anti-collapse thread 8 is directly connected into the connecting hole 72 of the anti-collapse nut 7, and the anti-collapse nut 7 is connected onto the anchoring piece 1 through threads, so that the anti-collapse thread 8 and the anchoring piece 1 can form a whole; when the anchor member 1 is broken from between the anchor device 6 and the anti-collapse nut 7, the anti-collapse thread 8 can still restrain the broken anchor member 1, so that the risk of injury to the worker can be reduced.
If the connecting hole 72 is directly formed in the tail of the anchoring part 1 and used for connecting the anti-collapse wire 8, the strength of the anchoring part 1 is reduced, and meanwhile, stress concentration generated by the connecting hole 72 enables the rod body at the tail of the anchoring part 1 to be more easily broken, so that huge potential safety hazards exist, the anti-collapse device is caused to fail, and the service life of the anchoring part 1 is also influenced; in addition, the connecting holes 72 on the anchoring piece 1 reduce the original design strength of the anchoring piece 1, and the design is not consistent with the original support design and regulation measures.
Preferably, the connection hole 72 is a through hole penetrating the collapse prevention nut 7 in the axial direction of the anchor 1. Specifically, an annular lug plate can be welded to the anti-collapse nut 7, and the connecting hole 72 is a hole in the annular lug plate.
Preferably, a self-aligning ball pad 4 is further arranged between the tray 3 and the anchoring part 1, the inner wall of the center hole of the tray 3 is matched with the outer peripheral surface of the self-aligning ball pad 4, the self-aligning ball pad further comprises a thrust bearing 5 which is sleeved on the anchoring part 1, the thrust bearing 5 is located between the self-aligning ball pad 4 and the anchoring device 6, the top surface of the thrust bearing 5 is abutted to the bottom surface of the self-aligning ball pad 4, and the bottom surface of the thrust bearing 5 is abutted to the top surface of the anchoring device 6.
Specifically, the anchoring part 1 needs to bear a larger axial load force in the process of applying pretightening force, and the thrust bearing 5 can bear the axial load; the thrust bearing 5 is stopped in the pre-tightening process of the anchoring device 6 to convert static friction of the traditional anchoring into rolling friction, and the pre-tightening force can be greatly improved based on the rolling friction principle compared with the plane friction in the prior art.
Preferably, the anti-collapse wire 8 is further included, and one end of the anti-collapse wire 8 is fixedly connected with the connecting hole 72. Specifically, the anti-collapse thread 8 may be a steel wire or the like.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like refer to orientations or positional relationships based on those shown in the drawings, or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and such terms are used for convenience of description and simplification of the description, and do not refer to or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance. In this context, "parallel," "perpendicular," and the like are not strictly mathematical and/or geometric limitations, but also encompass tolerances as would be understood by one skilled in the art and permitted by fabrication or use.
It should be noted that, in the embodiments and features and technical solutions in the embodiments of the present invention may be combined with each other without conflict.
Claims (11)
1. Solid anchor assembly that can slip casting, including anchor assembly (1), tray (3) and anchor (6), anchor assembly (1) is solid construction, tray (3) and anchor (6) overlap in proper order and are established the one end of anchor assembly (1), anchor (6) are used for compressing tightly tray (3), its characterized in that: the tray is characterized by further comprising a grouting pipe (9), one end of the grouting pipe (9) penetrates through the tray (3) and extends to one side far away from the tray (3), and an opening at the other end of the grouting pipe (9) is a grouting opening;
the anchoring piece (1) is far away from one end of the tray (3) and is a first end, and a grouting pipe (9) between the tray (3) and the first end is wound on the anchoring piece (1).
2. The groutable solid anchor of claim 1, wherein: the anchoring piece (1) is an anchor rod or an anchor cable, the anchoring device (6) is an anchoring nut, and one end of the anchoring piece (1) is provided with a thread;
when the anchoring piece (1) is an anchor cable, one end of the anchor cable is sleeved with the sleeve (2), the threads are arranged on the peripheral surface of the sleeve (2), the anchor cable penetrates through the sleeve (2) and is fixedly connected with the sleeve (2), the tray (3) and the anchoring device (6) are sequentially sleeved on the sleeve (2), and the grouting pipe (9) is wound on the sleeve (2) and the anchor cable.
3. The groutable solid anchor of claims 1 or 2, wherein: the device is characterized by further comprising a collapsible bladder sealing sleeve (12) which is internally provided with a flow channel (94), the grouting pipe (9) penetrates through the flow channel (94) of the bladder sealing sleeve (12), both ends of the bladder sealing sleeve (12) in the axial direction of the bladder sealing sleeve are hermetically connected with the grouting pipe (9), the grouting pipe (9) is provided with a slurry leakage port (92), and the slurry leakage port (92) is communicated with the flow channel (94);
the capsule-sealing sleeve (12) is fixedly sleeved on the outer peripheral surface of the grouting pipe (9) close to the tray (3), and the capsule-sealing sleeve (12) is located between the tray (3) and the first end.
4. The groutable solid anchor of claim 3, wherein: be located tray (3) with slip casting pipe (9) between the first end divide into dense section and sparse section, dense section is located and is close to one side of tray (3), sparse section is located the middle part of anchor assembly (1) and being close to one side of first end, just the helical pitch of slip casting pipe (9) certainly tray (3) to the direction that first end extends diminishes, pipe aeolian seal hole cover (12) fixed cover is established on slip casting pipe (9) that are located dense section.
5. The groutable solid anchor of claim 4, wherein: the grouting pipes (9) positioned at the dense section are in a tower spring shape, and the large-diameter end of the tower spring shape formed by the grouting pipes (9) is positioned at one side close to the tray (3).
6. The groutable solid anchor of claim 3, wherein: the grouting device is characterized by further comprising a plugging thin sheet (13) connected with the inner wall of the grouting pipe (9), wherein the shape of the plugging thin sheet (13) is matched with that of a channel in the grouting pipe (9), and the plugging thin sheet (13) is positioned between the grout leakage port (92) and the first end of the anchoring piece (1);
when the pressure in the grouting pipe (9) is smaller than the opening pressure of the blocking sheet (13), the blocking sheet (13) cuts off the grouting pipe (9), and when the pressure in the grouting pipe (9) is larger than the opening pressure of the blocking sheet (13), the blocking sheet (13) is opened to open the grouting pipe (9).
7. The groutable solid anchor of claim 6, wherein: the device also comprises an elastic blocking piece (14) which is fixedly arranged on the peripheral wall of the grouting pipe (9) and is used for blocking the grout leakage opening (92), the elastic blocking piece (14) is positioned in a flow channel (94) in the capsule sealing hole sleeve (12), and the opening pressure of the blocking sheet (13) is greater than the opening pressure of the elastic blocking piece (14);
when the pressure in the grouting pipe (9) is greater than the opening pressure of the elastic plugging piece (14), the elastic plugging piece (14) expands, the channel in the grouting pipe (9) is communicated with the flow channel (94) in the capsule sealing hole sleeve (12), and when the pressure in the grouting pipe (9) is less than the opening pressure of the elastic plugging piece (14), the elastic plugging piece (14) contracts to be used for plugging the slurry leakage port (92).
8. The groutable solid anchor of claim 1, wherein: the grouting pipe comprises a grouting pipe (9), and is characterized in that an annular convex block (17) is fixedly arranged on the inner peripheral wall of the grouting pipe (9) along the circumferential direction of the grouting pipe, the grouting pipe further comprises a butting part (15) arranged in the grouting pipe (9), one end of the butting part (15) is connected with the inner peripheral wall of the grouting pipe (9), the other end of the butting part (15) extends towards the direction close to the annular convex block (17), the annular convex block (17) and the butting part (15) are both arranged close to a grouting port of the grouting pipe (9), the direction from the annular convex block (17) to the butting part (15) is the grouting direction, and a grouting channel is arranged between the butting part (15) and the inner peripheral wall of the grouting pipe (9);
the grouting device is characterized by further comprising a blocking component (16) movably arranged in the grouting pipe (9), wherein the blocking component (16) is located between the annular convex block (17) and the abutting part (15), and a gap for slurry to pass through and communicated with the grouting channel is formed between the outer peripheral wall of the blocking component (16) and the inner peripheral wall of the grouting pipe (9);
during grouting, the blocking component (16) is abutted against the abutting part (15), and when slurry flows back, the blocking component (16) blocks the through hole in the annular convex block (17).
9. The groutable solid anchor of claim 2, wherein: when the anchoring piece (1) is an anchor cable, the grouting pipe (9) close to the tray (3) is an iron pipe or a steel pipe, interference fit is adopted between the grouting pipe (9) wound on the sleeve (2) and the anchor hole (10), and the position of the grouting pipe (9) wound on the sleeve (2) corresponds to the position of the hole opening of the anchor hole (10).
10. The groutable solid anchor of claim 9, wherein: the grouting pipe (9) wound on the sleeve (2) is in a tower spring shape, the small-diameter end of the tower spring shape formed by the grouting pipe (9) is wound on the sleeve (2), and the large-diameter end of the tower spring shape formed by the grouting pipe (9) is positioned on one side close to the tray (3).
11. The groutable solid anchor of claim 10, wherein: the interference magnitude between the grouting pipe (9) wound on the sleeve (2) and the anchor hole (10) is 1-5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210409898.2A CN114718619A (en) | 2022-04-19 | 2022-04-19 | Solid anchoring piece capable of grouting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210409898.2A CN114718619A (en) | 2022-04-19 | 2022-04-19 | Solid anchoring piece capable of grouting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114718619A true CN114718619A (en) | 2022-07-08 |
Family
ID=82243066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210409898.2A Withdrawn CN114718619A (en) | 2022-04-19 | 2022-04-19 | Solid anchoring piece capable of grouting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114718619A (en) |
-
2022
- 2022-04-19 CN CN202210409898.2A patent/CN114718619A/en not_active Withdrawn
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Application publication date: 20220708 |
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