CN212642773U - Mining anchor rope of cavity slip casting - Google Patents
Mining anchor rope of cavity slip casting Download PDFInfo
- Publication number
- CN212642773U CN212642773U CN202021456333.2U CN202021456333U CN212642773U CN 212642773 U CN212642773 U CN 212642773U CN 202021456333 U CN202021456333 U CN 202021456333U CN 212642773 U CN212642773 U CN 212642773U
- Authority
- CN
- China
- Prior art keywords
- slip casting
- cavity
- pipe
- plastics
- strand wires
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007569 slipcasting Methods 0.000 title claims abstract description 43
- 238000005065 mining Methods 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 43
- 239000010959 steel Substances 0.000 claims abstract description 43
- 239000004033 plastic Substances 0.000 claims abstract description 22
- 229920003023 plastic Polymers 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 11
- 230000017105 transposition Effects 0.000 claims abstract description 4
- 238000009955 starching Methods 0.000 claims 2
- 238000004873 anchoring Methods 0.000 abstract description 12
- 239000011347 resin Substances 0.000 abstract description 8
- 229920005989 resin Polymers 0.000 abstract description 8
- 239000003795 chemical substances by application Substances 0.000 abstract description 7
- 239000002002 slurry Substances 0.000 abstract description 4
- 230000002040 relaxant effect Effects 0.000 abstract 1
- 239000011440 grout Substances 0.000 description 20
- 238000005553 drilling Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- 238000007789 sealing Methods 0.000 description 6
- 230000008093 supporting effect Effects 0.000 description 6
- 239000004568 cement Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a mining anchor rope of cavity slip casting, end the thick liquid pipe, plastics and end thick liquid pipe overcoat, cavity hexagon nut, slip casting mouth, hex bolts, slip casting pipe, end thick liquid stopper, layer board, mining anchor rope ground tackle including head steel pipe, cavity steel strand wires, plastics, the head steel pipe right side is fixed with the cavity steel strand wires of many transposition, the plastics end the thick liquid pipe has been cup jointed in the cavity steel strand wires outside, plastics end thick liquid pipe outer wall parcel has plastics to end the thick liquid pipe overcoat, the welding of cavity steel strand wires right-hand member has cavity hexagon nut, cavity hexagon nut right port is established to the slip casting mouth, hex bolts and slip casting mouth threaded connection, the welding of slip casting mouth left side has the slip casting pipe, and the slip casting stopper cup joint of telling is in cavity steel strand wires right part. The utility model has the characteristics of intensity is high, the plasticity is good, the value of relaxing is low, stretch nature is good, with the resin anchoring agent and the pouring slurry wrapping power and an organic whole nature are stronger etc.
Description
Technical Field
The utility model relates to a mining anchor rope especially relates to a mining anchor rope of cavity slip casting.
Background
In the coal face, roadway supports or single pillars are generally used for advance support, and when the roadways are irregularly arranged, if the roadway supports are used for support in advance, the roadway supports are not easy to retract when the working face is stubbled; if the single support is used in advance, the roadway is wide (4.2m) and high (4.3m), so that the labor intensity of workers is high and the risk coefficient is high when the single support is used. Aiming at the problem, a technology of replacing the traditional advanced support with a hollow grouting anchor cable is provided. The surface of each steel strand of the anchor cable has textures, a certain space is occupied, and meanwhile, grouting anchor cables of other models or processes are used underground, so that the grouting effect after slurry solidification is directly influenced because the grouting effect is poor, the supporting strength and the supporting effect cannot be achieved, and the grouting efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a mining anchor rope of cavity slip casting to solve above-mentioned technical problem.
In order to realize the purpose, the utility model adopts the following technical scheme:
the utility model provides a mining anchor rope of cavity slip casting, includes that head steel pipe, cavity steel strand wires, plastics end the thick liquid pipe overcoat, cavity hexagon nut, slip casting mouth, hex bolts, slip casting pipe, end thick liquid stopper, layer board, mining anchor rope ground tackle, head steel pipe right side is fixed with the cavity steel strand wires of many transposition, the plastics end the thick liquid pipe has been cup jointed in the cavity steel strand wires outside, plastics end the thick liquid pipe overcoat that wraps up of thick liquid pipe outer wall has plastics end the thick liquid pipe overcoat, the welding of cavity steel strand wires right-hand member has cavity hexagon nut, cavity hexagon nut right-hand member mouth is established to the slip casting mouth, hex bolts and slip casting mouth threaded connection, the welding of slip casting mouth left side has the slip casting pipe, and the slip casting stopper cup joints in cavity steel strand wires right part of telling, the contact of slip casting stopper right-hand member has.
On the basis of the technical scheme, the surfaces of the hollow steel strands are smooth, and a sealed space is formed between every two adjacent hollow steel strands in a seamless mode through welding.
On the basis of the technical scheme, the grouting pipe is 5-8 cm and is communicated with the interiors of the hollow steel strands.
Compared with the prior art, the utility model has the advantages of it is following: the utility model discloses compare with slip casting anchor rope in the past and have intensity height, the plasticity is good, the lax value is low, the straightness is good, with the bond strength of resin anchoring agent strong, the thick liquid does not expose, whole supporting effect is the same like reinforced concrete, characteristics such as the whole anchor of roof have been realized, the steel pipe that the centre extended to grout outlet has been left out to the slip casting pipe, reduce manufacturing cost, the inside slip casting of cavity slip casting anchor rope walks the space of material, slip casting is fast, the difficult jam of slip casting, the possibility that produces air pocket gas pocket when having eliminated the slip casting, it is full of drilling to guarantee the anchor thick liquid, and saved blast pipe and slip casting pipe special joint, also need not at on-the-spot ligature slip casting pipe, blast pipe and shutoff slip casting hole, make the construction process very simplify.
Drawings
Fig. 1 is a schematic view of the appearance structure of the present invention.
Fig. 2 is a cross-sectional view of the position of the grouting pipe of the present invention.
In the figure: 1. the anchor comprises a head steel pipe, 2 hollow steel strands, 3 plastic grout stopping pipes, 4 plastic grout stopping pipe jackets, 5 hollow hexagon nuts, 6 grout injection ports, 7 hexagon bolts, 8 grout injection pipes, 9 grout stopping plugs, 10 supporting plates, 11 and a mining anchor rope anchorage.
Detailed Description
The invention is explained in further detail below with reference to the figures and the embodiments.
As shown in fig. 1-2, a hollow grouting mining anchor cable comprises a head steel pipe 1, a hollow steel strand 2, a plastic grout stopping pipe 3, a plastic grout stopping pipe jacket 4, a hollow hexagon nut 5, a grouting port 6, a hexagon bolt 7, a grouting pipe 8, a grout stopping plug 9, a supporting plate 10 and a mining anchor cable anchorage 11, and is characterized in that: 1 right side of head steel pipe is fixed with the hollow steel strand wires 2 of many transposition, plastics grout stopping pipe 3 has been cup jointed in the 2 outsides of hollow steel strand wires, the outer wall parcel of plastics grout stopping pipe 3 has plastics grout stopping pipe overcoat 4, 2 right-hand member welding of hollow steel strand wires have cavity hexagon nut 5, cavity hexagon nut 5 right-hand member mouth is established to slip casting mouth 6, hexagon bolt, 7 and 6 threaded connection of slip casting mouth, the welding of 6 left sides of slip casting mouth has slip casting pipe 8, and the grout stopping plug 9 of telling cup joints in 2 right parts of hollow steel strand wires, grout stopping plug 9 right-hand member contact has layer board 10, mining anchor rope 11 is installed on layer board 10 right side.
The surfaces of the hollow steel strands 2 are smooth, and a sealed space is formed between the adjacent hollow steel strands 2 in a seamless mode through welding.
The grouting pipe 8 is 5cm-8cm and is communicated with the interiors of the hollow steel strands 2.
The mining anchor cable has the characteristics of high strength, long anchoring length, capability of transmitting pre-applied tension to a rock stratum with stable deep part and the like.
The structural composition of the hollow steel strand is as follows:
the dimensions and mechanical properties are given in the following table:
1. and selecting hollow grouting mine anchor cables with different lengths according to different coal seam thicknesses, and ensuring that the anchor cables penetrate into a stable rock stratum to be not less than 1.0 m.
2. Equipment and tools required by construction: the drilling machine comprises a jumbolter, a double-wing drill bit with the diameter of 32mm or 39mm, a stirring head, a tensioning jack, a cement paste stirrer and a cement paste grouting pump.
3. Construction process
The field use of the mining anchor cable can be divided into five main processes of ground preparation, drilling, anchoring of an anchoring section, tensioning and hole sealing and grouting.
a) Preparing the ground: according to the structure and the application, the following requirements are met in the transportation process of the hollow grouting anchor cable:
(1) during loading and unloading, the anchor cable is carefully and lightly placed so as to avoid damaging the tail part of the anchor cable and influencing grouting.
(2) The surface of the anchor cable is kept clean in the transportation process, the anchor cable is prevented from being stained with mud, ash, coal powder, oil and water to influence the bonding effect of the anchor cable, the resin anchoring agent and the grouting liquid, and the anchor cable grout outlet is prevented from being blocked by impurities.
b) Drilling: the drilling hole can be drilled by an anchor rod drilling machine or a light special anchor cable drilling machine, can be connected with a B19 or B22 drill rod, a phi 32mm or phi 39mm rotary drill bit is selected according to the specification of the anchor cable, and the drilling machine is kept not to move during drilling so as to prevent the situation that the axes of the drilling holes are not on the same straight line and bring difficulty to the installation of the anchor cable, and the process is similar to anchor rod drilling.
c) Anchoring: the method comprises the steps of sequentially feeding an ultrafast or quick resin anchoring agent and a medium-speed resin anchoring agent into a hole, gently feeding the resin anchoring agent into the bottom of the hole by using a hollow grouting mine anchor cable, connecting the anchor cable with a drilling machine by using a stirring connector, starting the drilling machine, stirring while propelling for 20-30 s, feeding the anchor cable into the bottom of the hole, stopping the drilling machine without dropping, waiting for 1-2 min, dropping the drilling machine, and unloading the stirring connector to finish the resin anchoring of the anchor cable.
d) Tensioning, namely curing the resin anchoring agent for 1 hour, then installing a grout stop plug, a supporting plate and an anchorage device after curing, exposing the hole sealing device for about 100mm, hanging a tensioning jack, starting a pump to perform first tensioning (hole sealing), stopping tensioning after the grout stop plug is completely pressed into a drilled hole, checking whether the hole sealing condition is compact, and otherwise, repeatedly tensioning and sealing the hole by adding a steel pipe or a hard plastic pipe with a proper diameter until the hole sealing condition is compact; resetting the jack, starting the pump to perform secondary tensioning, observing the reading of the pressure gauge, stopping tensioning when the designed tensioning force is reached, and dismounting the jack.
e) Grouting
(1) The grout is 42.5MPa ordinary Portland cement, the grout is prepared according to the water cement ratio of 0.4-0.5, 8-10% of cement grouting additive is added, and the grouting pressure is generally controlled at 0.8-0.9 MPa.
(2) During grouting, the screw plug at the tail part of the hollow grouting anchor cable is firstly detached, the grouting device is connected to the internal thread at the tail part of the anchor cable, the grouting device is slowly screwed, and then the grouting device is connected with a grouting pump through a grouting pipeline. When the grouting device (grouting quick connector) and the grouting pipeline are intact and the connection is reliable, grouting can be started.
(3) And (4) slowly opening the grouting pump for grouting, wherein the grouting speed is preferably low at the beginning, and the grouting pressure is controlled. When the pressure reaches the design pressure, the grouting pump is closed, then the stop valve at the tail part of the hollow grouting anchor cable is closed, the pipeline pressure relief valve is opened to relieve the pressure of the pipeline, then the grouting device at the tail part of the anchor cable is dismounted, and the plug at the tail part of the anchor cable is screwed up firmly.
(4) In the grouting process, when local leakage and leakage are found, grouting is stopped in time, and cotton yarns and the like are used for plugging. After grouting, the stop valve at the tail part of the hollow anchor cable can be opened until the grout is initially set.
(5) The slurry-eating amount of the anchor cable is observed in the grouting process, and if the slurry-eating amount is small, the slurry quality and the grouting quality are influenced, the tee-joint flow dividing device is used for dividing the slurry.
The foregoing is a preferred embodiment of the present invention, and for those skilled in the art to understand the teaching of the present invention, the changes, modifications, replacements and variations to the embodiments will still fall within the protection scope of the present invention without departing from the principle and spirit of the present invention.
Claims (3)
1. The utility model provides a mining anchor rope of cavity slip casting, ends thick liquid pipe (3), plastics and ends thick liquid pipe overcoat (4), cavity hexagon nut (5), slip casting mouth (6), hexagon bolt (7), slip casting pipe (8), ends thick liquid stopper (9), layer board (10), mining anchor rope ground tackle (11) including head steel pipe (1), cavity steel strand wires (2), plastics, its characterized in that: head steel pipe (1) right side is fixed with cavity steel strand wires (2) of many transposition, cavity steel strand wires (2) outside has been cup jointed plastics and has been only starched pipe (3), plastics end starching pipe (3) outer wall parcel has plastics to end starching pipe overcoat (4), cavity steel strand wires (2) right-hand member welding has cavity hexagon nut (5), cavity hexagon nut (5) right-hand member mouth is established to slip casting mouth (6), hexagon bolt (7) and slip casting mouth (6) threaded connection, slip casting mouth (6) left side welding has slip casting pipe (8), and the stop of telling stopper (9) cup joints in cavity steel strand wires (2) right part, stop the contact of slip casting stopper (9) right-hand member has layer board (10), mining anchor rope ground tackle (11) are installed on layer board (10) right side.
2. The anchor cable for the hollow grouting mine according to claim 1, wherein: the surfaces of the hollow steel strands (2) are smooth, and a sealed space is formed between every two adjacent hollow steel strands (2) in a seamless mode through welding.
3. The anchor cable for the hollow grouting mine according to claim 1, wherein: the grouting pipes (8) are 5cm-8cm and are communicated with the interiors of the hollow steel strands (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021456333.2U CN212642773U (en) | 2020-07-22 | 2020-07-22 | Mining anchor rope of cavity slip casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021456333.2U CN212642773U (en) | 2020-07-22 | 2020-07-22 | Mining anchor rope of cavity slip casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212642773U true CN212642773U (en) | 2021-03-02 |
Family
ID=74763459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021456333.2U Expired - Fee Related CN212642773U (en) | 2020-07-22 | 2020-07-22 | Mining anchor rope of cavity slip casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212642773U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720149A (en) * | 2020-07-22 | 2020-09-29 | 枣庄市顺翔科技发展有限公司 | Mining anchor rope of cavity slip casting |
| CN113356906A (en) * | 2021-06-24 | 2021-09-07 | 中国矿业大学 | Anchoring device and supporting method for fixed-length anchoring and fixed-length grouting of grouting anchor cable |
-
2020
- 2020-07-22 CN CN202021456333.2U patent/CN212642773U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720149A (en) * | 2020-07-22 | 2020-09-29 | 枣庄市顺翔科技发展有限公司 | Mining anchor rope of cavity slip casting |
| CN113356906A (en) * | 2021-06-24 | 2021-09-07 | 中国矿业大学 | Anchoring device and supporting method for fixed-length anchoring and fixed-length grouting of grouting anchor cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210302 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |