CN109098744B - Use method of anchor rod extrusion type anchoring agent connecting pipe fitting - Google Patents
Use method of anchor rod extrusion type anchoring agent connecting pipe fitting Download PDFInfo
- Publication number
- CN109098744B CN109098744B CN201811186184.XA CN201811186184A CN109098744B CN 109098744 B CN109098744 B CN 109098744B CN 201811186184 A CN201811186184 A CN 201811186184A CN 109098744 B CN109098744 B CN 109098744B
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- China
- Prior art keywords
- connecting pipe
- pipe fitting
- anchor rod
- circular baffle
- cutting
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- 238000004873 anchoring Methods 0.000 title claims abstract description 54
- 238000001125 extrusion Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 31
- 238000005520 cutting process Methods 0.000 claims abstract description 27
- 239000011435 rock Substances 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 11
- 239000011440 grout Substances 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims abstract description 5
- 238000005553 drilling Methods 0.000 claims description 9
- 210000001503 joint Anatomy 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000003245 coal Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/025—Grouting with organic components, e.g. resin
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a use method of an anchor rod extrusion type anchoring agent connecting pipe fitting, which is characterized by comprising the following steps: cutting a hollow steel pipe with the inner diameter larger than the diameter of the anchor rod into a connecting pipe fitting, and engraving; carrying out horizontal and vertical spaced opposite penetrating extrusion holes on the connecting pipe fitting; manufacturing a circular baffle and a circular baffle ring with the diameter equal to the inner diameter of the connecting pipe fitting; welding a circular baffle and a circular baffle ring at two ends inside the connecting pipe fitting respectively; cutting the anchor rod into any two sections as required, and carving threads at two ends; chemical liquids A and B are arranged between the inner circular baffle and the circular baffle ring of the connecting pipe fitting, and the tail end and the end head threaded end of the cutting anchor rod are rotated until the circular baffle of the connecting pipe fitting is butted with the end of the circular baffle ring; the other end with the thread at the end of the anchor rod is respectively provided with a grout stop plug, a tray, a friction washer and a nut; installing an anchor rod with an extruded anchoring agent pipe fitting in the drill hole; the nut is rotated to realize the anchoring when the tail end of the anchor rod and the connecting pipe fitting are positioned; when the deformation of the surrounding rock is large, the anchor rod is reversely retreated.
Description
Technical Field
The invention relates to the technical field of mine roadway support, in particular to a use method of an anchor rod connecting pipe fitting, which is particularly suitable for an anchoring support system for coal mines and underground roadways, chambers and surrounding rocks of working surfaces of metal mines.
Background
With the development of coal resources in China, shallow resources are gradually exhausted, coal resource mining is continuously developed to deep parts, so that the stress of rock bodies around a roadway and a chamber is obviously increased, and the situation that soft rock is deformed possibly occurs when shallow surrounding rock meets the action of high ground stress, so that the end anchoring mode is not effective any more, and the anchoring length is continuously lengthened. Of course, the filling length of the anchoring agent is increased, so that the difficulty of the whole anchoring process is increased, the corresponding anchoring agent and the anchoring technology are not complete, the situation that the anchoring agent is scratched in advance often occurs because the anchoring agent is too tightly abutted against the rock wall and the anchor rod, the flowing anchoring agent is rapidly solidified, so that the anchor rod, the anchoring agent and the anchor rod hole are forced to be charged, the labor, the financial resources and the time are wasted, and the work efficiency is seriously reduced.
Aiming at the difficult problems of poor filling effect and time and labor waste in installation of the existing anchoring agent, the use method of the anchor rod extrusion type anchoring agent connecting pipe fitting is provided, the cutting anchor rods are adopted to be combined randomly, the extrusion type anchoring agent is used for connecting the pipe fitting, the anchoring agent is extruded through pressure generated by rotation, synchronous propulsion and fixed-point anchoring of the anchor rod anchoring agent are realized, the construction time is saved, the operation is simple, resin anchoring at different sections of the anchor rods is easy to realize, and the stability of an anchor rod anchoring system is promoted.
Disclosure of Invention
The invention provides a use method of an anchor rod extrusion type anchoring agent connecting pipe fitting, aiming at the technical problems that the anchoring position of the existing anchor rod is not easy to control and the anchoring section is short. The invention has the characteristics of good adaptability, simple construction, easy propulsion, convenient storage and the like, is easy to realize resin anchoring of different sections of the anchor rod, promotes the stability of the anchor rod anchoring system, and meets the supporting requirements of various mine roadways.
In order to achieve the purpose, the technical scheme of the invention is as follows: the invention discloses a use method of an anchor rod extrusion type anchoring agent connecting pipe fitting, which is characterized by comprising the following steps: cutting a hollow steel pipe with the inner diameter larger than the diameter of the anchor rod into a connecting pipe fitting, and engraving; carrying out horizontal and vertical spaced opposite penetrating extrusion holes on the connecting pipe fitting; manufacturing a circular baffle and a circular baffle ring with the diameter equal to the inner diameter of the connecting pipe fitting; welding a circular baffle and a circular baffle ring at two ends inside the connecting pipe fitting respectively; cutting the anchor rod into any two sections as required, and carving threads at two ends; chemical liquids A and B are arranged between the inner circular baffle and the circular baffle ring of the connecting pipe fitting, and the tail end and the end head threaded end of the cutting anchor rod are rotated until the circular baffle of the connecting pipe fitting is butted with the end of the circular baffle ring; the other end with the thread at the end of the anchor rod is respectively provided with a grout stop plug, a tray, a friction washer and a nut; installing an anchor rod with an extruded anchoring agent pipe fitting in the drill hole; the nut is rotated to realize the anchoring when the tail end of the anchor rod and the connecting pipe fitting are positioned; when the deformation of the surrounding rock is large, the anchor rod is reversely retreated.
The use method of the anchor rod extrusion type anchoring agent connecting pipe fitting is characterized in that: the method comprises the following steps:
cutting a hollow steel pipe with the inner diameter larger than the diameter of the anchor rod into a connecting pipe fitting with the length of 40cm, and engraving threads with the length of 10cm by using a lathe in the connecting pipe fitting;
secondly, performing horizontal and vertical spaced opposite penetrating extrusion holes on the connecting pipe fitting at intervals of 5cm by adopting a lathe drilling machine, wherein the diameter of the holes is 0.5cm, and the number of the holes is 12;
manufacturing a circular baffle with the diameter equal to the inner diameter of the connecting pipe fitting by adopting a thin steel plate, and manufacturing a circular baffle ring with the outer diameter equal to the inner diameter of the connecting pipe fitting by adopting a steel bar;
welding a circular baffle and a circular baffle ring at 10cm and 5cm positions of two ends inside the connecting pipe respectively, wherein the circular baffle is welded in a full-section mode, and the circular baffle ring is welded in three points;
cutting the anchor rod into any two sections, and performing outer diameter cutting on the anchor rod at two ends of the cut part, wherein the length of the cut wire is equal to the length of the inner diameter cutting of the connecting pipe fitting;
step six, installing two rolls of chemical liquid A and B arranged in a light film structure between the inner circular baffle and the circular baffle ring of the connecting pipe fitting, and rotating the tail threaded end of the cutting anchor rod end to be in butt joint with the circular baffle end of the connecting pipe fitting;
step seven, rotating the threaded end of the cutting anchor rod to be in butt joint with the circular retaining ring end of the connecting pipe fitting, and respectively installing a grout stop plug, a tray, a friction washer and a nut at the other threaded end of the anchor rod;
step eight, drilling a broken rock body by using an anchor rod drilling machine, installing two resin anchoring agents in the drilled hole, then installing an anchor rod with an extruded anchoring agent pipe fitting, and fastening a nut to enable a grout stop plug to be in close contact with a surrounding rock wall so as to realize primary anchoring of the tail end of the anchor rod;
and step nine, rotating the nut again after a period of time to enable the inner circular retaining ring of the connecting pipe fitting to be pressed and fall off, and enabling the anchor rod to extrude the chemical liquid A and the chemical liquid B to form liquid anchoring agent to enter the boundary of the surrounding rock, the anchor rod and the connecting pipe fitting from the extrusion hole of the connecting pipe fitting, so that secondary anchoring at the connecting pipe fitting is realized.
The invention has the advantages and beneficial effects that: the method has the characteristics of easiness in operation, reasonable steps and the like, can provide anchor rod anchoring support under various complex conditions, and meets the anchoring requirements of different lengths and different positions.
Drawings
Fig. 1 is a schematic view of a using method of an anchor rod extrusion type anchoring agent connecting pipe fitting for realizing the invention.
Fig. 2 is a sectional view taken at a of fig. 1.
Fig. 3 is a perspective view of the connecting tube of fig. 1.
In the figure: 1, cutting an anchor rod; 2 is fine screw thread; 3 is a connecting pipe fitting; 4 is a circular baffle; 5 is an extrusion hole; 6 is a circular baffle ring; 7 is a helix; 8 is a stop-grouting plug; 9 is a tray; 10 is a friction washer; and 11 is a nut.
Detailed Description
The invention is described in further detail below with reference to the figures and examples.
The invention provides a use method of an anchor rod extrusion type anchoring agent connecting pipe fitting.
Cutting a hollow steel pipe with the inner diameter larger than the diameter of the anchor rod into a connecting pipe fitting 3 with the length of 40cm, and carving threads with the length of 10cm by using a lathe in the connecting pipe fitting 3;
secondly, performing horizontal and vertical spaced opposite penetrating extrusion holes 5 on the connecting pipe fitting 3 every 5cm by using a lathe drilling machine, wherein the diameter of each hole is 0.5cm, and the number of the holes is 12;
step three, manufacturing a round baffle 4 with the diameter equal to the inner diameter of the connecting pipe fitting 3 by adopting a thin steel plate, and manufacturing a round baffle ring 6 with the outer diameter equal to the inner diameter of the connecting pipe fitting 3 by adopting a steel bar;
welding a circular baffle 4 and a circular baffle ring 6 at 10cm and 5cm positions of two ends inside the connecting pipe fitting 3 respectively, wherein the circular baffle 4 is welded in a full-section mode, and the circular baffle ring 6 is welded in a three-point mode;
step five, cutting the anchor rod into any two sections as required, and performing outer diameter cutting on the anchor rod at two ends of the cut part, wherein the length of the cut wire is equal to the length of the inner diameter cutting of the connecting pipe fitting 3;
sixthly, installing two rolls of chemical liquid A and B arranged in a light film structure between the inner circular baffle 4 and the circular baffle ring 6 in the connecting pipe fitting 3, and enabling the tail threaded end of the cutting anchor rod 1 to rotate to be in butt joint with the end of the circular baffle 4 of the connecting pipe fitting 3;
step seven, rotating the threaded end of the cutting anchor rod 1 to be in butt joint with the circular baffle ring 6 end of the connecting pipe fitting 3, and respectively arranging a grout stop plug 8, a tray 9, a friction washer 10 and a nut 11 at the other threaded end of the anchor rod;
step eight, drilling a broken rock body by using an anchor rod drilling machine, installing two resin anchoring agents in the drilled hole, then installing an anchor rod with an extruded anchoring agent pipe fitting, and fastening a nut 11 to enable a grout stop plug 8 to be in close contact with a surrounding rock wall so as to realize primary anchoring of the tail end of the anchor rod;
and step nine, the nut 11 is rotated again after a period of time, so that the annular baffle ring 6 in the connecting pipe fitting 3 is pressed to fall off, the anchor rod extrudes the chemical liquid A and the chemical liquid B to form liquid anchoring agent, the liquid anchoring agent enters the boundary between the surrounding rock and the anchor rod and the connecting pipe fitting 3 from the extrusion hole 5 of the connecting pipe fitting 3, and secondary anchoring at the connecting pipe fitting 3 is realized.
The scope of the present invention is not limited to the description of the embodiment, but is defined by the claims.
Claims (1)
1. The use method of the anchor rod extrusion type anchoring agent connecting pipe fitting is characterized in that: the connecting pipe fitting is formed by cutting a hollow steel pipe with the inner diameter larger than the diameter of the anchor rod, the inside of the connecting pipe fitting is provided with a thread, the connecting pipe fitting is provided with horizontally and vertically spaced opposite penetrating extrusion holes, and both ends of the inside of the connecting pipe fitting are welded with a circular baffle plate and a circular baffle ring, wherein the diameter of the circular baffle plate is equal to the inner diameter of the connecting pipe fitting;
specifically, the method comprises the following steps:
cutting a hollow steel pipe with the inner diameter larger than the diameter of the anchor rod into a connecting pipe fitting with the length of 40cm, and engraving threads with the length of 10cm by using a lathe in the connecting pipe fitting;
secondly, performing horizontal and vertical spaced opposite penetrating extrusion holes on the connecting pipe fitting at intervals of 5cm by using a lathe drilling machine, wherein the diameter of each hole is 0.5cm, and the number of the holes is not less than 12;
manufacturing a circular baffle with the diameter equal to the inner diameter of the connecting pipe fitting by adopting a thin steel plate, and manufacturing a circular baffle ring with the outer diameter equal to the inner diameter of the connecting pipe fitting by adopting a steel bar;
welding a circular baffle and a circular baffle ring at 10cm and 5cm positions of two ends inside the connecting pipe respectively, wherein the circular baffle is welded in a full-section mode, and the circular baffle ring is welded in three points;
cutting the anchor rod into any two sections, and performing outer diameter cutting on the anchor rod at two ends of the cut part, wherein the length of the cut wire is equal to the length of the inner diameter cutting of the connecting pipe fitting;
step six, installing two rolls of chemical liquid A and B arranged in a light film structure between the inner circular baffle and the circular baffle ring of the connecting pipe fitting, and rotating the tail threaded end of the cutting anchor rod end to be in butt joint with the circular baffle end of the connecting pipe fitting;
step seven, rotating the threaded end of the cutting anchor rod to be in butt joint with the circular retaining ring end of the connecting pipe fitting, and respectively installing a grout stop plug, a tray, a friction washer and a nut at the other threaded end of the anchor rod;
step eight, drilling holes in the crushed rock mass by using an anchor rod drilling machine, installing more than two resin anchoring agents in the drilled holes, then installing anchor rods with extruded anchoring agent pipe fittings, and fastening nuts to enable the grout stop plugs to be in close contact with the surrounding rock wall so as to realize primary anchoring of the tail ends of the anchor rods;
and step nine, rotating the nut again after a period of time to enable the inner circular retaining ring of the connecting pipe fitting to be pressed and fall off, and enabling the anchor rod to extrude the chemical liquid A and the chemical liquid B to form liquid anchoring agent to enter the boundary of the surrounding rock, the anchor rod and the connecting pipe fitting from the extrusion hole of the connecting pipe fitting, so that secondary anchoring at the connecting pipe fitting is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811186184.XA CN109098744B (en) | 2018-10-12 | 2018-10-12 | Use method of anchor rod extrusion type anchoring agent connecting pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811186184.XA CN109098744B (en) | 2018-10-12 | 2018-10-12 | Use method of anchor rod extrusion type anchoring agent connecting pipe fitting |
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| Publication Number | Publication Date |
|---|---|
| CN109098744A CN109098744A (en) | 2018-12-28 |
| CN109098744B true CN109098744B (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811186184.XA Active CN109098744B (en) | 2018-10-12 | 2018-10-12 | Use method of anchor rod extrusion type anchoring agent connecting pipe fitting |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344864A (en) * | 2019-08-19 | 2019-10-18 | 中冶沈勘秦皇岛工程设计研究总院有限公司 | Anchor pole and its application method |
| CN112343635B (en) * | 2020-11-04 | 2022-11-01 | 中铁隆昌铁路器材有限公司 | Mining composite hollow resin anchor rod assembly and mounting method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050053468A (en) * | 2003-12-01 | 2005-06-08 | 이미자 | Chemical anchor |
| CN204357467U (en) * | 2014-10-28 | 2015-05-27 | 山东科技大学 | Scalable internal-injection type secondary anchoring type anchor pole |
| CN205503158U (en) * | 2016-03-29 | 2016-08-24 | 李志� | Anchor rod device is strutted to formula of moulding plastics |
| CN105649665B (en) * | 2016-03-29 | 2017-02-15 | 李志� | Injection molding type anchor rod supporting device and construction method thereof |
| CN207740025U (en) * | 2017-11-27 | 2018-08-17 | 山东科技大学 | A kind of extending multistage pressure-relieving achor bar |
| CN107829767B (en) * | 2017-11-30 | 2024-02-27 | 安徽理工大学 | Sectional assembly type yielding hollow grouting anchor rod and construction method thereof |
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| Publication number | Publication date |
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| CN109098744A (en) | 2018-12-28 |
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